item: #1 of 1656 id: ap-1000 author: Ficker, T. title: Statistics of Electron Avalanches and Streamers date: 2007 words: 3195 flesch: 65 summary: After passing a certain initial distance � � 0 and gathering a certain number of ener- getic electrons N d� �e� 1, which are capable of creating a group of UV photons, a photoionisation process starts and a swarm of K �1smaller avalanches with mean pop- ulations nd d , ( ) 1 � �e� � appear along the parent ava- lanche. (3) In this way the number of less populated avalanches in- creases and, as a consequence, deviations from the Furry distribution may occur. (ii) Multiplication of highly populated avalanches with mean populations � �nd j J �0 must be generated accord- ing to a fractal scenario of branching or partitioning like most fractals when going to smaller scales. keywords: avalanches; fractal; vol; � � cache: ap-1000.pdf plain text: ap-1000.txt item: #2 of 1656 id: ap-10001 author: J. Mahmoud, Muaath; G. Rasheed, Bassam; M. Hanon, Muammel title: Improving the production process of silicon nanoparticle and quartz microlens date: 2025 words: 6878 flesch: 60 summary: The input parameters were laser power, laser speed, and the number of repeated processes. Effects of laser power, laser speed, and No. of repeated processes on the lens diameter, lens depth, focal point, F #, and NA as determined by the DOE software. keywords: energy; figure; laser; nanoparticles; output; parameters; power; process; processes; quartz; silicon; software; surface cache: ap-10001.pdf plain text: ap-10001.txt item: #3 of 1656 id: ap-1002 author: Frank, H. title: Influence of Oxidation Media on the Transport Properties of Thin Oxide Layers of Zirconium Alloys date: 2007 words: 4919 flesch: 62 summary: If the voltage is switched off, and the sample is short-circuited, there flows an adequate extraction current I Iex in� � of opposite polarity [13] of the form I B t n ex � � � . The mea- suring points could still be fitted to the second order polynomial I aU bU c� � �2 , but with negative coeffi- cient a. keywords: air; current; voltage; zr1nb cache: ap-1002.pdf plain text: ap-1002.txt item: #4 of 1656 id: ap-10035 author: Runcziková, Daniela; Záleský, Jan; Záleský, Marek; Koller, Jakub; Šašek, Ladislav title: Anchor test and long-term monitoring of grouted anchors instrumented with Fiber Bragg Grating sensing technology date: 2025 words: 2355 flesch: 61 summary: A FBGs sensors distance was approximately 1 metre, the posi- tions of the sensors on the anchors (centre of anchor and surface of anchor root) installed in the boreholes and a simple geological description of the subsoil are shown in Figure 1. This article deals with anchor tests instrumented with FBG deformation gauges of the root and the tendon of the pre-stressed strand anchor in a test field in the Central Bohemian Region. keywords: anchor; deformation; fiber; figure; monitoring; root; sensors cache: ap-10035.pdf plain text: ap-10035.txt item: #5 of 1656 id: ap-10038 author: Cavalcante de Farias, Estela Cristina; Kropf Santos Fermam, Ricardo; de Mendonça, Amsterdam de J. Souza Marques title: Comparison between the Wilhelmy surface tension measurement method and the pendant drop shape analysis method date: 2025 words: 3483 flesch: 46 summary: This comparison involved surface tension measurements of these liquids: bidistilled water, n-dodecane, and per- fluorocarbon (FC-40), these liquids were chosen to cover a wide range of surface tension with stability Surface tension measurement by the pendant drop shape analysis method The calibration data include the regression for obtain- ing the surface tension in mN m−1 in the temperature range from 18 °C to 30 °C and the surface tension mea- surement range was from 16 mN m−1 to 73 mN m−1 with an expanded uncertainty of 0.28 mN m−1 and a coverage factor k = 2.00, according to: γc = C0 + C1 · TL + C2 · γi, (3) where γc is the corrected surface tension, in mN m−1; γi is the indicated surface tension, in mN m−1; C0, C1 and C2 are the parameters of the regression equation, and TL is the measurement temperature, in °C. keywords: analysis; drop; liquid; measurement; method; shape; surface tension; temperature; wilhelmy cache: ap-10038.pdf plain text: ap-10038.txt item: #6 of 1656 id: ap-10039 author: Dvořák, Michael; Hrdlička, Jan; Pilař, Lukáš; Skopec, Pavel; Burda, Jiří title: CO2 capture in pilot-scale unit using solid adsorbent in biomass fluidised bed boiler flue gas date: 2025 words: 5285 flesch: 50 summary: Modification and functionalization of zeolites to improve the efficiency of CO2 adsorption: A review. Over the years, considerable efforts have been devoted to developing solid sorbents, but much less to the development of adsorption units, especially continu- 501 https://doi.org/10.14311/AP.2024.64.0501 https://creativecommons.org/licenses/by/4.0/ https://www.cvut.cz/en M. Dvořák, J. Hrdlička, L. Pilař et al. keywords: adsorption; capture; co2; experimental; figure; flue; gas; pressure; sorbent; temperature; unit; vpsa; zeolite cache: ap-10039.pdf plain text: ap-10039.txt item: #7 of 1656 id: ap-1004 author: Chmelík, T.; Zámyslický, P. title: EU Emissions Trading Scheme as Implemented in the Czech Republic date: 2007 words: 1802 flesch: 51 summary: The system is based on the following five pillars: � Allocation (a system of distribution of emission allowances to participants, based on harmonized criteria). 2.1 Sectoral coverage A simple comparison shows that some sectors, while hav- ing almost the same number of installations, have a much smaller share of total emissions. keywords: allocation; allowances; czech; emissions; system cache: ap-1004.pdf plain text: ap-1004.txt item: #8 of 1656 id: ap-1005 author: Okurka, T. title: Wireless Telegraphy at the German Universal Exhibition in Ústí nad Labem in 1903 [1] date: 2008 words: 1750 flesch: 62 summary: 40 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 48 No. 3/2008 Wireless Telegraphy at the German Universal Exhibition in Ústí nad Labem in 1903 [1] T. Okurka This paper focuses on the transmission of wireless telegraphy between Ústí nad Labem and Teplice during the German Universal Exhibition in Ústí nad Labem in 1903. This oblivion can also be explained by the fact that wireless telegraphy was not widely used after the presentation in Ústí nad Labem. keywords: exhibition; labem; nad; wireless cache: ap-1005.pdf plain text: ap-1005.txt item: #9 of 1656 id: ap-1006 author: Kohout, K.; Nahodil, P. title: Simulation Environment for Artificial Creatures date: 2007 words: 4131 flesch: 60 summary: This internal state covers the state of agent sensors and effectors (some of these may be damaged or partial by malfunctioning) and the Vege- tative System Block. It can be used to observe agent parameters at any time of simulation. keywords: agent; architecture; data; environment; layers; sensors; simulation cache: ap-1006.pdf plain text: ap-1006.txt item: #10 of 1656 id: ap-10062 author: Poornakantha, Tanuku; Prasanna, Mamidi Lakshmi; Gundagani, Murali title: Mathematical modelling and analysis of three-dimensional Maxwell-Nanofluid flow over a bidirectional stretching surface in the presence of a magnetic field date: 2025 words: 5761 flesch: 53 summary: Introduction It is critical to include radiative heat flow while study- ing heat transfer processes, especially in regard to nanofluids. Zhang and Zheng published a novel theory for non-linear radiation heat transfer in nanofluids [18]. keywords: figure; flow; fluid; heat; nanofluid; number; parameter; temperature; transfer; values cache: ap-10062.pdf plain text: ap-10062.txt item: #11 of 1656 id: ap-1007 author: Behrens, A.; Atorf, L.; Schwann, R.; Ballé, J.; Herold, T.; Telle, A. title: First Steps into Practical Engineering for Freshman Students Using MATLAB and LEGO Mindstorms Robots date: 2008 words: 4024 flesch: 51 summary: Thus it is very impor- tant to motivate first semester students by confronting them with practical situations, in which they “feel like engineers” right from the beginning of their studies [2]. 1. 44 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 48 No. 3/2008 First Steps into Practical Engineering for Freshman Students Using MATLAB and LEGO Mindstorms Robots A. Behrens, L. Atorf, R. Schwann, J. Ballé, T. Herold, A. Telle Besides lectures on basic theoretical topics, contemporary teaching and learning concepts for first semester students give more and more consideration to practically motivated courses. keywords: engineering; fig; learning; lego; matlab; mindstorms; nxt; project; robot; students; toolbox cache: ap-1007.pdf plain text: ap-1007.txt item: #12 of 1656 id: ap-10074 author: Urtekin, Levent; Yılan, Faik; Şahin, İbrahim Baki; Gök, Kadir title: Analysis of surface roughness and machining performance of AZ91 magnesium alloy cut by WEDM date: 2025 words: 6623 flesch: 52 summary: [31] investigated the influence of WEDM process parameters on material removal, surface characteristics, and corrosion rate of ZE41A Mg alloy. Surface topography maps of samples depending on WEDM process parameters. unable to produce the same level of surface rough- ness as short pulses combined with high peak values. keywords: alloy; analysis; az91; machining; magnesium; materials; mrr; parameters; performance; process; roughness; surface; toff; ton; wedm; wire cache: ap-10074.pdf plain text: ap-10074.txt item: #13 of 1656 id: ap-10075 author: Padovec, Zdeněk title: Analytical and numerical analysis of filament-wound toroidal pressure vessel loaded by internal pressure and temperature field date: 2025 words: 5287 flesch: 59 summary: Analysis and optimization of junction between cylindrical part and end dome of filament wound pressure vessels using data driven evolutionary algorithms. Keywords: Toroidal pressure vessel, filament winding, stress analysis, classic lamination theory, FEM. keywords: analysis; angle; figure; meridian; mpa; pressure; radius; stress; toroidal; winding cache: ap-10075.pdf plain text: ap-10075.txt item: #14 of 1656 id: ap-1008 author: Holub, J. title: Finite Automata Implementations Considering CPU Cache date: 2007 words: 3411 flesch: 69 summary: However, it may lead to an exponential increase of number of states (2Q NFA states, where QNFA is the number of states of the original NFA). 2 Nondeterministic finite automaton Nondeterministic finite automaton (NFA) is a quintuple (Q, �, �, q0, F), where Q is a finite set of states, � is a set of input sym- bols, � is a mapping � �Q Q� ( ) ( )� � �� � , q Q0 � is an initial state, and F Q� is a set of final states. keywords: automata; automaton; dfa; finite; implementation; state; transition cache: ap-1008.pdf plain text: ap-1008.txt item: #15 of 1656 id: ap-10099 author: Kotla, Rahul Wilson; Yarlagadda, Srinivasa Rao; Mannala, Kumudwathi; Sreek, Dharani; Sivarathri, Vijaya Madhavi title: Enhanced electric vehicle charging topology with integrated fuzzy-based shunt converter date: 2025 words: 4489 flesch: 54 summary: A review of battery energy storage systems and advanced battery management system for different applications: Challenges and recommendations. Advanced charging system for EV The diagram of an Enhanced Electric Vehicle Charg- ing System (EVCS) is shown in Figure 1. keywords: battery; charging; control; converter; energy; figure; flc; power; shunt; system; voltage cache: ap-10099.pdf plain text: ap-10099.txt item: #16 of 1656 id: ap-1010 author: Teng, C. P.; Bai, S.; Angeles, J. title: Shape Synthesis in Mechanical Design date: 2007 words: 4972 flesch: 68 summary: Specifically, these con- straints are, � �0( , , )� � �� �� � A , � �n B� � �� �1( , , )� � � , (18) where �A and �B are the curvature values of curve �a at point A and of curve �b at point B, respectively, thereby formulating an equality constrained optimum-design problem. k� �( , )� � and � � � � �k keywords: curve �; design; p �; q �; tan �; � b; � c; � k; � n; � pk; � � cache: ap-1010.pdf plain text: ap-1010.txt item: #17 of 1656 id: ap-10107 author: Bočan, Petr; Jíra, Aleš title: Determination of mechanical properties of very thin 3D-printed specimens for numerical analysis of tensile strength and fracture toughness date: 2025 words: 7806 flesch: 53 summary: Figure 9 shows a schematic example of printing samples for botch print orientations. Experimental verification of the influence of thickness on 3D printed samples on fracture toughness parameters. keywords: data; experiment; figure; fracture; material; model; modulus; numerical; properties; results; sample; strength; tensile cache: ap-10107.pdf plain text: ap-10107.txt item: #18 of 1656 id: ap-1013 author: Behrens, A. title: Creating Panoramic Images for Bladder Fluorescence Endoscopy date: 2008 words: 3269 flesch: 57 summary: The optimal threshold �t is then determined by � �b t T bt t2 0 2( ) max ( )� � � � (1) with � � � � �b t t t t t2 1 2 1 2 2( ) ( ) ( ) ( ( ) ( ))� � (2) and the two class probabilities �1, �2 and their mean levels �1, �2. 5, by � � � �m x y L x y L x y L x y L x y( , ) ( , ) ( , ) ( , ) ( , )� � � � � � � �1 1 1 1 2 2 (7) �( , ) arctan ( , ) ( , ) ( , ) ( , ) x y L x y L x y L x y L x y � � � � � � � � � � 1 1 1 1� � � ��. keywords: algorithm; bladder; feature; fig; image; video; � � cache: ap-1013.pdf plain text: ap-1013.txt item: #19 of 1656 id: ap-10136 author: Sabol, Josef; Frýbort, Jan title: Conceptual design of a space nuclear fast reactor date: 2025 words: 6797 flesch: 57 summary: It consists of fuel rods, which are axially divided into these parts: the lower reflector part, the fuel part, the gas plenum for fission product accumulation, and the upper reflector part. Nuclear Electric Propulsion (NEP) uses thermal energy generated by the fission of nuclear fuel. keywords: coolant; fuel; haleu; heu; nuclear; power; reactor; rods; space; temperature cache: ap-10136.pdf plain text: ap-10136.txt item: #20 of 1656 id: ap-10138 author: Mátl, Jakub; Fejt, Filip title: Use of the thermo-hydraulic system code RELAP5/MOD3.2 to transient analysis events of the VR-1 reactor date: 2025 words: 3923 flesch: 51 summary: reactor model C – recirculation scheme – RELAP5. reactor model E – recirculation scheme – RELAP5. keywords: coolant; core; figure; flow; model; power; reactor; relap5; scram; vr-1 cache: ap-10138.pdf plain text: ap-10138.txt item: #21 of 1656 id: ap-10139 author: Kozic, Ján; Štefánik, Milan title: Uranium foil neutron activation analysis date: 2025 words: 3738 flesch: 54 summary: The analysed foils can be used further in the education of students or in experimental applications such as measurements of neutron spectral indexes, neutron activation analysis of uranium ore or delayed neutron analysis. Keywords: Production rate, uranium foils, neutron activation analysis, gamma-ray spectrometry, Training Reactor VR-1, HPGe detector. keywords: activation; analysis; foil; neutron; pr pr; reactor; standard; uranium cache: ap-10139.pdf plain text: ap-10139.txt item: #22 of 1656 id: ap-10147 author: Janský, Vojtěch; Hejda, Zdeněk; Duda, Daniel; Yanovych, Vitalii; Uruba, Václav title: Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV date: 2025 words: 4503 flesch: 63 summary: Vortex correlations Correlation of vortex parameters allows us to discover some coherent behaviour, if it exists. The correlation R of vortex parameter y (or other) is calculated as follows: keywords: car; correlation; figure; mean; model; spoiler; stream; variant; velocity; vortex; vortices; wake; wind cache: ap-10147.pdf plain text: ap-10147.txt item: #23 of 1656 id: ap-1015 author: Stache, N. C.; Nguyen, T. P. title: Automatic Compensation of Workpiece Positioning Tolerances for Precise Laser date: 2008 words: 4409 flesch: 58 summary: Thus, the problem to be minimized can be formulated as Q B B B B BT T T( ) ( ) minu u u u u u� � � �2 2 , (5) with the constraint of u 2 1� to avoid obtaining the trivial so- lution. This can be reformulated as Q B Bi i T T i i( ) minv v v� � �� , (6) where the eigenvector vopt of BTB, which belongs to the smallest eigenvalue �4, equals the sought parameter vector u. Thus, the circle parameters c and r can be determined. keywords: circle; contour; estimation; fig; image; laser; position; welding; � � cache: ap-1015.pdf plain text: ap-1015.txt item: #24 of 1656 id: ap-10161 author: Samudrala, Bhargavi; Gundagani, Murali; Jayalakshmi, K. title: Effects of coupled diffusion and buoyancy forces on three-dimensional MHD convective Williamson-Casson nanofluid flow: a numerical study date: 2025 words: 7604 flesch: 56 summary: Influence of Lorentz force and induced magnetic field effects on Casson Micropolar nanofluid flow over a permeable curved stretching/shrinking surface under the stagnation region. Hall current and ion slip effects on 3D MHD nanofluid flow of Eyring-Powell fluid with gyrotactic microorganisms. keywords: coefficient; diffusion; effect; figure; flow; heat; nanofluid; number; sheet; stretching; surface; transfer cache: ap-10161.pdf plain text: ap-10161.txt item: #25 of 1656 id: ap-1017 author: Doutres, O.; Dauchez, N.; Genevaux, J.-M.; Dazel, O. title: Validity of the One-Dimensional Limp Model for Porous Media date: 2008 words: 3568 flesch: 61 summary: Then, substituting the solid displacement in Eq. (2) gives the propagation equation on uf ~ ~ limK u upf f f� � �2 2 0� � , (7) with ~K f the bulk modulus of the air in the pores and ~ lim� p the modified density of the air. Assuming a harmonic time dependence, the equation of motion can be written in the following form [11]: � � � �� �� � � � 2 2 212 22 ~ ~~ ~ �� �u u P us f s , (1) � � � � � �� � � �2 12 2 22 2 2~ ~ ~ ~u u Q u R us f s f , (2) with ~ ~ ~ ~ ~� � � � � � � � � � � � 11 12 Q R , ~ ~ ~ ~ ~� � � � � � � � � � � � 12 22 Q R . keywords: frame; fsi; limp; material; model; � � cache: ap-1017.pdf plain text: ap-1017.txt item: #26 of 1656 id: ap-10175 author: Oyelade, Akintoye O.; Ehinmowo, Adegboyega B.; Oribayo, Oluwasola; Abiodun, Yetunde O. title: Wave propagation in a pipe conveying two phase flow date: 2025 words: 4237 flesch: 63 summary: Keywords: Wave propagation, phase velocity, group velocity, two phase, natural frequency. − C2 p + 2CpvL √ βL ( 1 + KsvL αGρG ρL(1 − αG) ) − ( v2 L + v2 L ρG ρL K2 s αG (1 − αG) − T + P + θ ) = 0 (15) Then, the expressions for phase velocity and group velocity are defined as: Cp = 1 2 √ 4 ( vL √ βL + vL √ βL αGρG ρL(1 − αG) )2 + 4Γ + 2vL √ βL ( 1 + αGρG ρL(1 − αG) ) , (16) keywords: conveying; flow; fluid; phase; pipes; velocity; wave cache: ap-10175.pdf plain text: ap-10175.txt item: #27 of 1656 id: ap-1019 author: Bednář, M. title: The Precision Simulation of the First Generation Matrix Converter date: 2008 words: 1761 flesch: 61 summary: Keywords: Matrix converter, real-time system, simulation, energy conversion. All the system parts are 66 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 48 No. 3/2008 The Precision Simulation of the First Generation Matrix Converter M. Bednář This paper describes simulation of first generation matrix converter, which was realized in the lab. keywords: converter; fig; matrix; simulation; switching; system cache: ap-1019.pdf plain text: ap-1019.txt item: #28 of 1656 id: ap-1021 author: Steffen, M.; Leonhardt, S. title: Non-Contact Monitoring of Heart and Lung Activity by Magnetic Induction Measurement date: 2008 words: 2258 flesch: 57 summary: - Ch. 3) vs. heart reference (PPG) (Volunteer in back position) 5 Conclusion The elimination of electric contact between a medical de- vice and the patient’s body is a promising idea, and this paper presents one feasible approach to non-contact monitoring, based on magnetic induction. 2: Concept of magnetic induction measurements [9]. keywords: fig; heart; induction; measurement; monitoring; � � cache: ap-1021.pdf plain text: ap-1021.txt item: #29 of 1656 id: ap-1023 author: Řeřábek, M. title: Space Variant PSF – Deconvolution of Wide-Field Astronomical Images date: 2008 words: 2309 flesch: 58 summary: 2 Transfer characteristics of optical imaging systems The description of transfer characteristics (mainly PSF) of optical imaging system is presented in the following section. This relation affects the transfer characteristics of optical systems and makes them spatially variant. keywords: aberrations; fig; image; psf; system; � � cache: ap-1023.pdf plain text: ap-1023.txt item: #30 of 1656 id: ap-10236 author: Henzler, Weronika; Szala, Mirosław; Pałka, Tomasz; Wyględacz, Bernard; Czupryński, Artur; Łatka, Leszek title: Comparison of cavitation erosion of NiCrBSi and AISI 316L coatings deposited by powder plasma transferred Arc welding date: 2025 words: 4076 flesch: 51 summary: Effect of manganese ion implantation on cavitation erosion resistance of HIPed Stellite 6. Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague COMPARISON OF CAVITATION EROSION OF NICRBSI AND AISI 316L COATINGS DEPOSITED BY POWDER PLASMA TRANSFERRED ARC WELDING Weronika Henzlera, Mirosław Szalaa,∗, Tomasz Pałkab, Bernard Wyględaczc, Artur Czupryńskic, Leszek Łatkad a Lublin University of Technology, Faculty of Mechanical Engineering, Department of Materials Engineering, Nadbystrzycka 36D, 20-618 Lublin, Poland b Lublin University of Technology, Faculty of Mechanical Engineering, Department of Production Engineering, Nadbystrzycka 36D, 20-618 Lublin, Poland c Silesian University of Technology, Faculty of Mechanical Engineering, Department of Welding Engineering, keywords: 316l; cavitation; coatings; erosion; hardness; materials; microstructure; nicrbsi; resistance; steel; welding cache: ap-10236.pdf plain text: ap-10236.txt item: #31 of 1656 id: ap-1025 author: Bauer, J. title: Single-Phase Pulse Width Modulated Rectifier date: 2008 words: 2364 flesch: 63 summary: Conclusion The use of PWM control in rectifiers eliminates the prob- lems caused by using phase controlled rectifiers. PWM rectifiers can be divided into two groups according to power circuit connection – the current and the voltage type. keywords: current; fig; pwm; rectifier; supply; voltage; � � cache: ap-1025.pdf plain text: ap-1025.txt item: #32 of 1656 id: ap-1027 author: Sokoll, J.; Fingerhuth, S. title: Psychoacoustic Properties of Fibonacci Sequences date: 2008 words: 2439 flesch: 56 summary: Table 1 shows the binary Fibonacci Sequence for the first 8 years. The sequence of the number of pairs Fn is the original Fibonacci Sequence. keywords: binary; fibonacci; fig; sequence; � � cache: ap-1027.pdf plain text: ap-1027.txt item: #33 of 1656 id: ap-1029 author: Šimeček, I. title: Acceleration of Sparse Matrix-Vector Multiplication by Region Traversal date: 2008 words: 4961 flesch: 60 summary: The CSR format can be inef- ficient due to many thrashing misses for some types of matrices: � matrices with a large number of nonzero elements per row (relative to the cache size), � matrices with large bandwidth (relative to the cache size). I I( )� � . keywords: cache; csr; fig; format; matrices; matrix; misses; performance; region; spm×v cache: ap-1029.pdf plain text: ap-1029.txt item: #34 of 1656 id: ap-1031 author: Jirout, T.; Fořt, I. title: An Investigation of the Erosion Wear of Pitched Blade Impellers in a Solid-Liquid Suspension date: 2008 words: 4687 flesch: 59 summary: (15), h�1 cV average volumetric concentration of solid parti- cles, m3 �m�3 D impeller diameter, m Do hub diameter, m dp average diameter of solid particles, m H height of liquid from bottom of the vessel, m H dimensionless transversal coordinate of the profile of the worn blade h width of impeller blade, m k wear rate constant m weight of impeller blade, kg n impeller speed, s�1 R regression coefficient R dimensionless longitudinal (radial) coordinate along the radius of the impeller blade r longitudinal (radial) coordinate along the radius of the impeller blade, m s thickness of the impeller blade, m T vessel diameter, m t time, h y transversal coordinate along the width of the blade, m Greek symbols � pitch angle of the blade, deg �l density of liquid, kg�m�3 � dynamic viscosity, Pa�s Indices av average value j summation index n related to the concentration of solid particles d related to the diameter of the particles t related to time o initial value © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 25 Acta Polytechnica Vol. 48 No. 4/2008 0 0.05 0.1 0.15 0.2 0.25 0 20 40 60 80 100 t A four-blade pitched blade impeller (pitch angle � � 30°), pumping downwards, was investigated in a pilot plant fully baffled agitated vessel with a water suspension of corundum. keywords: blade; impeller; time; wear; � � cache: ap-1031.pdf plain text: ap-1031.txt item: #35 of 1656 id: ap-1033 author: Klenko, Y.; Scholtz, V. title: Influence of a Point-to-Plane DC Negative Corona Discharge on Gel Surfaces date: 2008 words: 2440 flesch: 50 summary: Corona discharges are usually realized in such a way that one of the electrodes has a small radius of curvature. Each type of gel electrode was placed in a standard Petri dish (90 mm in diameter). keywords: corona; discharge; fig; gel; needle; point; surface cache: ap-1033.pdf plain text: ap-1033.txt item: #36 of 1656 id: ap-1035 author: Semančík, P.; Cimbala, R.; Záliš, K. title: Thermal – Oxidation Stability of Insulating Fluids date: 2008 words: 2288 flesch: 48 summary: [1]: � temperature 100 °C, � volume of oil samples 5 l, � bubbling of oil dried and refined by air in larger amounts than are needed for reaction of oil with the air, � accelerator: copper wires in quantities cca 0.1 cm2/g mea- sured oil. Test conditions: The filtered fluid sample oxidizes under the following conditions [3]: � oil weight: 25 g � 0.1 g, � oxidation gas: air, � gas flow speed: 0.15 l/h � 0.015 l/h, � test period: keywords: oil; orgrez; oxidation; stability; test cache: ap-1035.pdf plain text: ap-1035.txt item: #37 of 1656 id: ap-10353 author: Parente de Oliveira Alves, Victor; Negrão Macêdo, Wilson; André Barros Galhardo, Maros title: Direct current nanogrid providing energy for water pumping: a comparative study in a riverside community in the Amazon date: 2025 words: 8195 flesch: 53 summary: Water pumping systems are crucial for improving the quality of life for riverside communities. Ad- ditional practical approaches for increasing the effi- ciency of water pumping systems can be found, with one example presented in [12]. keywords: amazon; current; dcdn; direct; efficiency; energy; equipment; figure; inverter; model; nanogrid; power; pump; pumping; residence; system; water; water pump cache: ap-10353.pdf plain text: ap-10353.txt item: #38 of 1656 id: ap-1037 author: Doležel, V.; Procházka, P.; Křístek, V. title: Modeling Water Pollution of Soil date: 2008 words: 7872 flesch: 62 summary: (V is the volume of � ) and the principle of conservation of mass, that the bulk modulus K a is equal to the magnitude of the air pressure pa. Summing up the above theory, the first system of equa- tions can be formulated as: � � � x S p S p b j ij ij i� � � � �( )w w a a 0, (18) where � �� � � � � �ij ij ijn S p S p( ) ( )1 w w a a , �ij is again the unit tensor of the second order and � �b n nS nS gi � � � �( )1 � � �s w w a a , see (14). The boundary conditions can also be derived as: p n pn pis prescribed on and is prescribed on� � , ,� � � � �n p n p, � � -0 (23) (since the permeability coefficients are also defined by vector transformation) after some algebra we eventually get: r r k p r r k p r z k p z p z� � � � � � � � � � � � � � � � � � � � � � 1 t rf $ % & ' ( ) � � � � � + + � � d d � � � � , (24) which is valid for arbitrarily � from an admissible set of solu- tions. keywords: cos �; k �; r r; r �; t �; w �; x �; z �; � eff; � f; � ij; � p; � sin; � u; � � cache: ap-1037.pdf plain text: ap-1037.txt item: #39 of 1656 id: ap-10388 author: Lovska, Alyona; Ravlyuk, Vasyl; Derevyanchuk, Oleksandr; Dižo, Ján title: Integration of STEM technologies into the professional training of transport engineers and expert education teachers date: 2025 words: 6248 flesch: 51 summary: A brake lever transmission of a freight wagon bogie: 1, 2 – vertical levers; 3 – a triangle; 4 – a pad; 5 – a brake pad; 6 – pendulum suspen- sions; 7 – tightening of vertical levers; 8 – a spacer; 9 – a bracket. Therefore, this must be taken into account when studying the strength of vertical lever tightening in dynamics. keywords: bogie; brake; design; education; engineering; figure; levers; model; printing; process; stem; technologies; tightening; training cache: ap-10388.pdf plain text: ap-10388.txt item: #40 of 1656 id: ap-1039 author: Fořt, I.; Hasal, P.; Paglianti, A.; Magelli, F. title: Axial Force at the Vessel Bottom Induced by Axial Impellers date: 2008 words: 4462 flesch: 51 summary: 1: Pilot plant experimental equipment vessel was equipped with four radial baffles (width of baffles b T� 01. ) and was stirred with a four pitched blade impeller (pitch angle � � �45 , diameter D T� ( )2 5 , width of blade W D� 5), pumping downward. 3 and 4 that the subregion between ra- dius r1 (R1) and radius r2 (R2) of the flow along the bottom practically diminishes at the level of impeller C T �1 3. keywords: blade; dimensionless; flow; impeller; liquid; pressure; vessel; � � cache: ap-1039.pdf plain text: ap-1039.txt item: #41 of 1656 id: ap-1041 author: Frydrýšek, K. title: Probabilistic Analysis of the Hard Rock Disintegration Process date: 2008 words: 3050 flesch: 48 summary: 5 Results – stochastic evaluation Figs. 9 to 14 show the equivalent stress (i.e. �HMH distribu- tions) at some selected time t of the solution calculated for one of 500 Monte Carlo simulations (i.e. for one situation when the material of the ore is described by values Rp �12 MPa, Rm �13 5. MPa, E � 20000 MPa and � � 0 2. ). Figure 16 is calculated for one simulation (i.e. for the situation when the material of the ore is described by values Rp �12 MPa, Rm �13 5. keywords: bit; disintegration; fem; fig; ore; results; sbra cache: ap-1041.pdf plain text: ap-1041.txt item: #42 of 1656 id: ap-1043 author: Hilar, M.; Pruška, J. title: Statistical Analysis of Input Parameters Impact on the Modelling of Underground Structures date: 2008 words: 3348 flesch: 56 summary: A multi- criteria analysis resulted in the selection of pre-excavation 6 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 48 No. 5/2008 Number of calculation a b In �1 In � 2 In � 3 In � 4 In � 5 Value qij’ �1 1 �0.64 �0.26 0.00 0.26 0.64 Ground 1 25 27 25.4 25.6 26.0 26.4 26.6 Ground 2 27 29 27.4 27.6 28.0 28.4 28.6 Ground 3 22 25 22.5 22.9 23.5 24.1 24.5 Ground 4 25 30 25.9 26.5 27.5 28.6 29.1 Ground 5 30 35 30.9 31.5 32.5 33.6 34.1 Ground 6 35 38 35.5 35.9 36.5 37.1 37.5 Ground 7 35 38 35.5 35.9 36.5 37.1 37.5 Ground 8 25 28 25.5 25.9 26.5 27.1 27.5 Table 1: Input � values for various geotechnical layers based on random intervals Calculation q E1 � q2 � � q3 � � q c4 � q5 � � 1 4 2 2 5 3 2 1 3 5 2 1 3 3 5 3 4 5 4 5 1 4 3 4 5 2 4 1 1 2 Table 2: Random permutations of the input parameters qi Parameter qij Edef This classification was established in 1974 in Norway (by Barton, Lien, Lunde and Loset) and is based on six parameters [4]: Q RQD J J J J SRFn r a w � � � , (1) where RQD � rock quality designation, Jn � joint set num- ber, Ja � joint alteration number, Jw � joint water reduction number, SRF � stress reduction factor. keywords: input; mass; number; parameters; rock; tunnel; � � cache: ap-1043.pdf plain text: ap-1043.txt item: #43 of 1656 id: ap-1045 author: Jilemnická, L.; Berka, V.; Hromada, E. title: Development of Real Estate Market in the Czech Republic date: 2008 words: 1727 flesch: 61 summary: The slow growth in interest rates slightly increases the ten- dency to sell older flats. A similar trend can also be observed in the tenancy of older flats. keywords: czech; fig; flats cache: ap-1045.pdf plain text: ap-1045.txt item: #44 of 1656 id: ap-1047 author: Prajzler, V.; Jeřábek, V.; Lyutakov, O.; Hüttel, I.; Špirková, J.; Machovič, V.; Oswald, J.; Chvostová, D.; Zavadil, J. title: Optical Properties of Erbium and Erbium/Ytterbium Doped Polymethylmethacrylate date: 2008 words: 3778 flesch: 71 summary: 3 displays the FT-IR spectra of PMMA layers doped with Er3� ions (ErCl3) in the wavelength range from 4000 to 2600 cm�1. � The Er3� doped PMMA samples exhibited a typical emis- sion at 1530 nm, due to the Er3� intra-4f 4I13/2 � 4I15/2 only at samples with higher content of Er3� ions. keywords: er3; fig; ions; samples; vol; yb3 cache: ap-1047.pdf plain text: ap-1047.txt item: #45 of 1656 id: ap-1049 author: Římal, J.; Šindler, D. title: Comparison of Temperature Loadings of Bridge Girders date: 2008 words: 2808 flesch: 51 summary: Using reference temperature t f �10 °C (tem- perature when the bridge girder was placed on the bearings), the uniform temperature components are as follows: �t t tmax max� � � � � � �0 40 10 30 °C �t t tmin min� � � � � � �0 1: Tmax � �37 °C � � �Te, max 45 °C Tmin � �24 °C � � �Te, min 24 °C Using reference temperature T0 10� °C (the temperature when the bridge girder was placed on the bearings) the uni- form temperature components are as follows: T T TN pos e, , max� � � � � � �0 45 10 35 °C T T TN neg e, , min� � � � � � �0 20 10 30 °C Components with temperature differences: Because a composite bridge girder is not a simple struc- ture with acceptable details, it is necessary to apply a non- linear temperature gradient. keywords: bridge; temperature; � � cache: ap-1049.pdf plain text: ap-1049.txt item: #46 of 1656 id: ap-1051 author: Šimeček, I. title: Memory Hierarchy Behavior Study during the Execution of Recursive Linear Algebra Library date: 2008 words: 2688 flesch: 64 summary: 4 Evaluation of the results 4.1 Testing configuration 4.1.1 HW configuration All results were measured on Pentium Celeron M420 at 1.6 GHz, 2GB@ 333 MHz, with the following cache parameters: L1 cache is a data cache with BS � 64, CS � 32 kB, s � 8, h � 64, and LRU replacement strategy. [7]. � For TLB miss ratio measuring, we also used the CA with the following parameters: h �1, s �128, BS � 4096. keywords: cache; fig; gemm; matrix; � � cache: ap-1051.pdf plain text: ap-1051.txt item: #47 of 1656 id: ap-1053 author: Rieger, F. title: Dissipative Heating in a Rotational Viscometer with Coaxial Cylinders date: 2008 words: 2435 flesch: 72 summary: Using this model, the relation of shear stress � and shear rate �� can be expressed by the following relation: � � � �� �p� 0 for � �� 0, (2) where �0 is the yield stress and �p stands for plastic viscosity. � � �022 168 C, 2b) T T T T K K t� � � � � � � � � � f f( )[ * ( *) exp( *)] keywords: t �; � f; � k; � � cache: ap-1053.pdf plain text: ap-1053.txt item: #48 of 1656 id: ap-1055 author: Svítek, M. title: Wave Probabilistic Model of Binary Time Series date: 2008 words: 4982 flesch: 67 summary: Suppose now with respect to Theorem 3 that: P A A(( ) ( )� �� � � ��0 1 01 . (38) If we use the estimated angle we can compute the inclu- sion-exclusion probability as: � ( ) ( )) � ) � ) � ) P( A A P(A P(A P(A � � � � � � � � � � � � � � � � 0 1 0 1 2 0 1 1 � ) cos( � ) ,P(A � �� � � �1 1 11 14 (39) where the estimate (39) corresponds to the occurrence rate directly estimated from the time series: � ( ) ( )) keywords: functions �; p(a �; parameters �; phase �; � cos; � � cache: ap-1055.pdf plain text: ap-1055.txt item: #49 of 1656 id: ap-10553 author: Exner, Pavel title: Quantum graphs featuring unusual self-adjoint extensions date: 2025 words: 5379 flesch: 68 summary: By Krein’s formula [9] the resolvents of Ĥ and HD differ by an operator of rank not exceeding N (in fact, equal to N − 1), hence their essential spectra coincide and we get σess(Ĥ) = ∅. Furthermore, both Ĥ and HD are self-adjoint exten- sions of the same symmetric operator of the deficiency indices not exceeding N (the domain of which is ob- tained by imposing the conditions ψj(0) = ψ′ j(0) = eiθAout j (V ψ) at infinity; one is Neumann at the origin and N − 1 satisfy Dirichlet condition there. keywords: adjoint; quantum; self cache: ap-10553.pdf plain text: ap-10553.txt item: #50 of 1656 id: ap-10563 author: Campoamor-Stursberg, Rutwig title: The scientific legacy of Miloslav Havlíček date: 2025 words: 11951 flesch: 51 summary: As a first decisive advance towards the classification, a detailed procedure to determine fine gradings for the class of classical Lie algebras was given, and an equivalence criterion for fine gradings based on labeled graphs was proposed. We review the main research achievements of Miloslav Havĺıček in algebraic methods in Quantum Theory, his extensive work on realisations of Lie algebras and superalgebras and their representation theory, quantum groups and differential equations. keywords: algebra; canonical; exner; group; journal; klimyk; lie; lie algebras; m. havĺıček; mathematical; miloslav; operators; physics; pošta; quantum; realisations; representations; theory cache: ap-10563.pdf plain text: ap-10563.txt item: #51 of 1656 id: ap-1057 author: Khalil, S. A.; Fathy, A. M. title: An Empirical Method for Estimating Global Solar Radiation over Egypt date: 2008 words: 3441 flesch: 59 summary: 2 Methodology The original form, proposed by Angstrom, expressed the correlation between clear sky global solar radiation and sun- shine duration as follows: G G a b S Nc� �{ ( )}. List of symbols Gc clear sky global solar radiation in kW/m2, S sunshine duration in hours, N length of the daylight in hours, G0 extraterrestrial solar radiation on a horizontal sur- face in kW/m2, E0 correction factor of the Earth’s orbit, � sunrise/sunset hour angle, dn day number in the year (1 365� �dn ), � declination of the sun, � latitude of the station, � day angle in radiance, RMSE root mean square error, MBE mean bias error, n number of data pairs, � % absolute percentage error, Gm measured values of global solar radiation, Ges estimated values of global solar radiation. keywords: ges �; global; method; radiation; values; � � cache: ap-1057.pdf plain text: ap-1057.txt item: #52 of 1656 id: ap-1059 author: Novak, M.; Dolšak, B. title: An Intelligent System for Structural Analysis-Based Design Improvements date: 2008 words: 4061 flesch: 53 summary: Keywords: computer-aided design, structural optimisation, knowledge based systems, decision support experience gained by many design iterations are of crucial importance. On the other hand, design changes are necessary for under-dimensioned structure, which cannot bear the loadings and will fail during its exploitation. keywords: analysis; design; engineering; hole; knowledge; process; system; vol cache: ap-1059.pdf plain text: ap-1059.txt item: #53 of 1656 id: ap-10600 author: Dvořáková, L’ubomíra; Pelantová, Edita title: Frequencies of letters in infinite k-balanced sequences date: 2025 words: 4225 flesch: 73 summary: Keywords: Letter frequency, balanced sequences, balancedness threshold, factor complexity. i < kn + n : ui = a} n exists and is the same for any choice of (kn)n∈N. The definition of letter frequency in the introduction is restricted to the study of the limit for the sequence (kn) = (0). keywords: frequencies; letter; sequence cache: ap-10600.pdf plain text: ap-10600.txt item: #54 of 1656 id: ap-10605 author: Nesterenko, Maryna; Pošta, Severin; Staryi, Mykola title: On realizations of Lie algebras date: 2025 words: 5421 flesch: 62 summary: − x7∂7 − x8∂8 − x9∂9 + ∂10. − x7∂7 − x8∂8 − x9∂9 + ∂10. keywords: algebras; case; conformal; fields; group; lie; method; realizations; representations; vector cache: ap-10605.pdf plain text: ap-10605.txt item: #55 of 1656 id: ap-1061 author: Škorpík, J. title: The Amount of Regenerated Heat Inside the Regenerator of a Stirling Engine date: 2008 words: 3175 flesch: 69 summary: If the thermodynamic processes are iso- thermal on the hot side and the cold side, then the enthalpy of the working gas does not change (� �I IH C( ) ( )� � �� �0 0) and we can using equation (13). (12) The amount of regenerated heat can be computed exactly if the change enthalpy of the working gas on the hot side and the cold side � �I IH C( ) ( )� � �� 0 is known (more about this problem in [3], [4]). keywords: engine; heat; regenerator; � q; � � cache: ap-1061.pdf plain text: ap-1061.txt item: #56 of 1656 id: ap-10625 author: Matchonov, Kuvonchbek; Matrasulov, Davron; Dittrich, Jaroslav title: Dirac fermion in a time-dependent spherical box date: 2025 words: 5137 flesch: 66 summary: Dirac particle in a spherical box The Dirac equation on confined domains has been studied in [11–16]. For a massless Dirac particle, i.e. for m = 0, the average coordinate can be defined using (18) for R0(t) keywords: box; dirac; equation; particle; quantum; r0(t; time cache: ap-10625.pdf plain text: ap-10625.txt item: #57 of 1656 id: ap-1063 author: Lidmila, M.; Horníček, L.; Krejčiříková, H.; Tyc, P. title: Prerequisites for Increasing the Axle Load on Railway Tracks in the Czech Republic date: 2008 words: 3419 flesch: 60 summary: Axle load to 250 kN, S49 rails may be used only for ver- tical rail head wear of up to 20 mm in track beds with loading capacity coefficients of 100 MPa�1 and more. For loading by 300 kN, the requirements are met only by track beds with loading capacity coefficients of 100 MPa�m�1 and more. keywords: axle; bed; load; track cache: ap-1063.pdf plain text: ap-1063.txt item: #58 of 1656 id: ap-1065 author: Zemanová, A.; Zeman, J.; Šejnoha, M. title: Simple Numerical Model of Laminated Glass Beams date: 2008 words: 3557 flesch: 61 summary: u i e ( ) , ( ) , ( ) ( ) , ( )( ) ( ) , ( ) ( )� �N r N r , ( ) , , , , ( ) , ( ) ( ) , ( ) ( ) , ( u i e e w e w e e w e w e i w x x w x x� �N r N r � x x x xe i e i e i e i e i) ( ) , ( ) ( ) ,, ( ) , ( ) ( ) , ( ) , ( )� �N r N r� � � � � � � � � �e i e i e i e i e i ex x x x( ) , ( ) , ( ) ( ) , ( )( ) ( ) , ( ) ( )� �N r N r , ( ) ,� i where e is used to denote the element number, �e and �e denote a relevant searched and test field restricted to the e-th element, Ne i ,• ( ) is the associated matrix of the basis functions and re i ,• ( ) is the matrix of nodal unknowns. i i ix u z x z w x x x w x ( ) ( ) ( ) ( ) ( )( ) ( , ) ( ) ( ) (� � � � d d x) , (2) which, when combined with the constitutive equations of each layer expressed in terms of Young’s modulus E and the shear modulus G: � �x keywords: glass; � � cache: ap-1065.pdf plain text: ap-1065.txt item: #59 of 1656 id: ap-10666 author: Turbiner, Alexander V. title: gl3 ALGEBRA IN MIXED MATRIX REPRESENTATIONS date: 2025 words: 2458 flesch: 56 summary: In the partic- ular case of the gl3 algebra, these generators take the form: E11 = x1∂1 + M11, E22 = x2∂2 + M22, E12 = x1∂2 + M12, E21 = x2∂1 + M21, E0 = k − x1∂1 − x2∂2, T − 1 = ∂1, T − 2 = ∂2, T + 1 = x1(k − x1∂1 − x2∂2) [7], for discussion see [8]: a = ∂ ∂z̄ , a† = − ∂ ∂z + z̄. (6) keywords: algebra; gl3; matrix; operators; representation cache: ap-10666.pdf plain text: ap-10666.txt item: #60 of 1656 id: ap-1067 author: Frank, H. title: Influence of Simulated LOCA on the Properties of Zircaloy Oxide Layers date: 2008 words: 2146 flesch: 61 summary: At higher temperatures © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 27 Acta Polytechnica Vol. 48 No. 6/2008 Influence of Simulated LOCA on the Properties of Zircaloy Oxide Layers H. Frank Specimens of Zr1Nb and Zry-4W were pre-oxidized first for 360 days in steam at 425 °C and were then exposed for 3 min to 1200 °C in steam, simulating loss of coolant conditions. The I-V characteristics of Zr1Nb showed normal behavior, whereas Zry-4W changed from an unusual sub-linear form at low temperatures and voltages to normal space-charge limited currents at higher temperatures and voltages. keywords: fig cache: ap-1067.pdf plain text: ap-1067.txt item: #61 of 1656 id: ap-10679 author: Bandilla, Arno; Chadzitaskos, Goce; Jex, Igor title: Unitary generation of GHZ states date: 2025 words: 3257 flesch: 60 summary: The generation and manipulation of quantum states is one of the standard tasks for physics, particularly in quantum optics. On the level of quantum states two of the crucial properties of quantum mechanics can be demonstrated [3, 4]. keywords: bell; generation; ghz; quantum; state; transformation cache: ap-10679.pdf plain text: ap-10679.txt item: #62 of 1656 id: ap-1069 author: Dočekal, A.; Kreidl, M.; Šmíd, R. title: Evaluation of Methods used for Separation of Vibrations Produced by Gear Transmissions date: 2008 words: 5393 flesch: 60 summary: Feature selection methods are therefore used that can find a suboptimal solution only, but their computation is less de- manding. The vibration signal generated by the gear transmission can be separated using methods that make it possible to select the valid features included in the signal. keywords: feature; gear; methods; results; search; selection; signal; transmission; vibration; � � cache: ap-1069.pdf plain text: ap-1069.txt item: #63 of 1656 id: ap-10691 author: del Olmo, Mariano A.; Romaniega, Álvaro title: Classical and quantum superintegrable systems on the sphere and the hyperbolic 2-space date: 2025 words: 9380 flesch: 69 summary: For this solution, we obtain the following expression for N−,1N+,1 + µ1: −∂2 ξ − coth ξ ∂ξ − (l2 − 1)2 − 1 4 cosh2 ξ + (Mk − 1)2 sinh2 ξ . In this case N−,2N+,2 + µ2 yields: −∂2 ξ − coth ξ ∂ξ − (l2 + 1)2 − 1 4 cosh2 ξ + (Mk − 1)2 sinh2 ξ , (97) where the parameters Mk and l2 are replaced by Mk−1 and l2 + 1, respectively. keywords: equation; hamiltonian; operators; systems cache: ap-10691.pdf plain text: ap-10691.txt item: #64 of 1656 id: ap-10701 author: van der Meer, Niels; Beneš, Michal title: Method of lines for reaction-diffusion systems admitting invariant regions date: 2025 words: 6771 flesch: 69 summary: Conclusion The finite-difference method of lines turns out to be ef- ficient, easy to implement, and accurate in approximat- ing nonlinear dynamics of reaction diffusion systems. Preserving invariance properties of reaction–diffusion systems on stationary surfaces. keywords: convergence; diffusion; equations; method; model; numerical; reaction; solution; systems cache: ap-10701.pdf plain text: ap-10701.txt item: #65 of 1656 id: ap-1071 author: Vacek, J.; Vacek, J.; Chocholoušová, J. title: Rock Burst Mechanics: Insight from Physical and Mathematical Modelling date: 2008 words: 2744 flesch: 69 summary: We observed the mechanism and the history of coal rock bursts. For rock bursts (also called bumps) to occur, the rock has to possess certain particular rock burst properties leading to accumulation of energy and the potential to release this energy. keywords: bump; burst; coal; force; photo; rock cache: ap-1071.pdf plain text: ap-1071.txt item: #66 of 1656 id: ap-1073 author: Štancl, J.; Skočilas, J.; Šesták, J.; Žitný, R. title: Properties of Starch Based Foams Made by Thermal Pressure Forming date: 2008 words: 6704 flesch: 57 summary: where h* is the relative thickness of an idealized compact crust without pores, and � �� �f ( )*1 h is the mean porosity of the whole sandwich plate. i c 2 2 � � � �� � �L L( ) tanh( ) ( ) tanh( ) tanh ( � �i c i cy y y� � �� �) tanh( ) 2 , (7b) keywords: conductivity; crust; h �; heating; porosity; properties; starch; suspension; thickness; � m; � � cache: ap-1073.pdf plain text: ap-1073.txt item: #67 of 1656 id: ap-1075 author: Macek, K. title: Pareto Principle in Datamining: an Above-Average Fencing Algorithm date: 2008 words: 3036 flesch: 63 summary: Let � : X n� � be attributes of X. (Attributes can be con- sidered as columns in a data table, i.e. the n-tuple from the i-th row. 2.3 Starting set of intervals The starting set of intervals is defined as follows R xi i BO O� �cc( ) , whereby B ni B y k B BO i� � � � � � � � � � � � ( ) ( ) , cc is the complement coding cc :� � n n� 2 and k is a parameter. keywords: algorithm; data; fencing; intervals; � � cache: ap-1075.pdf plain text: ap-1075.txt item: #68 of 1656 id: ap-1077 author: Correia, António J. P. Moura; Rodrigues, Joao Paulo C.; Silvac, Valdir Pignatta e title: Influence of Brick Walls on the Temperature Distribution in Steel Columns in Fire date: 2009 words: 2391 flesch: 62 summary: This paper presents the results of fire resistance tests in steel columns embedded on walls, carried out at the Laboratory of Testing Materials and Structures of the Uni- versity of Coimbra. Fire resistance tests were carried out with two different column cross-sections, two ori- entations of the inertia axis in relation to the fire and two thicknesses of the building walls [3]. keywords: case; fig; fire cache: ap-1077.pdf plain text: ap-1077.txt item: #69 of 1656 id: ap-1079 author: Law, A.; Gillie, M.; Pankaj, P. title: Incorporation of Load Induced Thermal Strain in Finite Element Models date: 2009 words: 2383 flesch: 56 summary: 1: Plastic flow, and model setup constituents are irrecoverable [5], i.e. they are plastic strains. This means that plastic strains are induced in directions other than the one in which the load is applied. keywords: modulus; plastic; strains; � � cache: ap-1079.pdf plain text: ap-1079.txt item: #70 of 1656 id: ap-1081 author: Rahmanian, I.; Wang, Y. title: Thermal Conductivity of Gypsum at High Temperatures – A Combined Experimental and Numerical Approach date: 2009 words: 2997 flesch: 55 summary: For a boundary node, when subjected to convective and radiative boundary conditions (Fig. 2): � � � � � � �� � � �� � � � � � � � � � �T F T h x k T F h x k T1 0 2 1 0 1 12 1 2 1 � � � � �E T T t c x � � ( ) ( ) ,� � �273 273 24 1 4 � � (6) where F0 is F k t c x 0 1 2� � �� ( ) , h(T) is convection heat transfer coefficient (W/m2 °C), T� is the ambient temperature (°C), � is a geometric “view factor”, E is the effective emissivity, � is Stefan-Boltzmann constant (5.67×10 8 W/m2 K4). ( )d free (J/kg °C), (8) where � c is the average additional specific heat, ed is the dehydration water content (percentage by total weight), efree is the free water content (percentage by total weight), �T is the temperature interval, f1, f2 are correction factors to account for the heat of reactions and effects of water movement. keywords: conductivity; gypsum; temperature; � � cache: ap-1081.pdf plain text: ap-1081.txt item: #71 of 1656 id: ap-1083 author: Crosti, C. title: Structural Analysis of Steel Structures under Fire Loading date: 2009 words: 3390 flesch: 57 summary: By means of non linear analyses, it was possible to include considerations of structural fire resistance, and also to figure out how some elements, such as the columns, are fundamen- tal for the stability of the whole structure. We can conclude that, in performance fire analyses, the global behavior of the struc- ture is more important than a study of the individual elements composing the structure. keywords: fig; fire; scenario; structure cache: ap-1083.pdf plain text: ap-1083.txt item: #72 of 1656 id: ap-1085 author: Santos, S. O.; Rodrigues, J. P. C.; Toledo, R.; Velasco, R. V. title: Compressive behaviour at High Temperatures of Fibre Reinforced Concretes date: 2009 words: 2740 flesch: 61 summary: A Portuguese study and a Brazilian study are described, which were carried out to develop fiber concrete compositions with better fire behavior. Five type K thermocouples (Cromo-Alumel) 0.5 mm in di- ameter were placed within the specimen and on its surface to measure the temperature during high temperatures tests. keywords: concrete; fibers; specimens; temperatures cache: ap-1085.pdf plain text: ap-1085.txt item: #73 of 1656 id: ap-1087 author: Klingsch, E.; Frangi, A.; Fontana, M. title: Experimental Analysis of Concrete Strength at High Temperatures and after Cooling date: 2009 words: 3181 flesch: 60 summary: [6] EN 12390-2:2008; Testing hardened concrete – Part 2: Making and curing specimens for strength tests. This ef- fect increases with increasing maximum temperature and lower cooling temperatures, respectively. keywords: cement; concrete; strength; temperature cache: ap-1087.pdf plain text: ap-1087.txt item: #74 of 1656 id: ap-1089 author: Espinós, A.; Hospitaler, A.; Romero, M. L. title: Fire Resistance of Axially Loaded Slender Concrete Filled Steel Tubular Columns – Development of a Three-Dimensional Numerical Model and Comparison with Eurocode 4 date: 2009 words: 2544 flesch: 57 summary: The results of the simulations were compared with a series of fire resistance tests available in the literature [11], as well as with the predictions of the Eurocode 4 [6] simplified calculation model. This model was validated by comparing the simulation results with fire resistance tests carried out by other researchers, as well as with the predictions of the Eurocode 4 simplified calculation model. keywords: concrete; fire; model; resistance; steel cache: ap-1089.pdf plain text: ap-1089.txt item: #75 of 1656 id: ap-1091 author: Schneider, U.; Schneider, M.; Franssen, J.-M. title: Calculation of a Tunnel Cross Section Subjected to Fire – with a New Advanced Transient Concrete Model for Reinforced Structures date: 2009 words: 5977 flesch: 65 summary: 12 we come to the conclusion that EC2 Model simulations do not give a good approxima- tion of the measured values. 5: Comparison of measured and calculated total strains under an applied load function according to Fig. 4 2.2.2 Results of measurements and calculations of total strains with an ATCM and EC2 Model The calculation is done with different load functions dur- ing heating. keywords: atcm; beam; calculation; concrete; ec2; fig; load; model; strain; stress; time cache: ap-1091.pdf plain text: ap-1091.txt item: #76 of 1656 id: ap-1093 author: Song, Y.; Huang, Z.; Burgess, I.; Plank, R. title: A New Design Method for Industrial Portal Frames in Fire date: 2009 words: 9475 flesch: 62 summary: It is therefore convenient to write for the pure mechanical strain: � � � � � �m el pl tr tot th� � � � � . It is generally agreed that the total strain �tot comprises the following parts: � � � � �tot keywords: atcm; beam; calculation; concrete; ec2; fig; fire; frame; load; mechanism; model; phase; strain; time cache: ap-1093.pdf plain text: ap-1093.txt item: #77 of 1656 id: ap-1095 author: Mesquita, L. M. R.; Piloto, P. A. G.; Vaz, M. A. P.; Pinto, T. M. G. title: Decomposition of Intumescent Coatings: Comparison between a Numerical Method and Experimental Results date: 2009 words: 3801 flesch: 60 summary: The gas mass flux, � ��mg, is calculated accordingly to Darcy’s law and it is assumed that the gases present in the in- tumescent material behave as a perfect gas. At the moving front, the boundary conditions are: k T x q T T h T T T s t t T k r a av p � � � ��� �� � � � � �� ( ) ( ) ( ( ), ) ,4 4 c for v p � � � � T x k T x Q T s t t TH� � � �c for ( ( ), ) , (6) in which QH is the heat flux due to the endothermic decom- position of the virgin material, given by Q h s tH � � p v� �( ), where hp represents the decomposition enthalpy. keywords: fig; heat; mass; steel; � k; � m; � � cache: ap-1095.pdf plain text: ap-1095.txt item: #78 of 1656 id: ap-1097 author: Pada, D. title: Simulation and Study of Natural Fire in a Wide-Framed Multipurpose Hall with Steel Roof Trusses date: 2009 words: 2622 flesch: 63 summary: 3 presents the RHR curve for the spectator stand design fire. 4.4 Data measured The most important data measured during the fire simu- lation, from the point of view of structural fire safety design, was the adiabatic surface temperature every 5 m of the bottom chord of the steel roof trusses situated above and near to the fire. keywords: design; fire; roof; stand; temperature cache: ap-1097.pdf plain text: ap-1097.txt item: #79 of 1656 id: ap-1099 author: Anderson, K.; Gillie, M. title: Investigation into Methods for Predicting Connection Temperatures date: 2009 words: 3357 flesch: 57 summary: This paper examines two current methods available for predicting connection temperatures as defined in Eurocode A 3D finite element model is also created to predict connection temperatures using the commercial software package Abaqus keywords: connection; method; plate; results; temperatures; � � cache: ap-1099.pdf plain text: ap-1099.txt item: #80 of 1656 id: ap-1101 author: Chlouba, J.; Wald, F. title: Connection Temperatures during the Mokrsko Fire Test date: 2009 words: 2609 flesch: 65 summary: Keywords: Fire test, FE simulation, fire safe connection, temperature prediction, Angelina beam, compartment fire. [3] Kallerová, P., Wald, F.: Ostrava fire test, Czech Technical University in Prague, CIDEAS report No. 3-2-2-4/2, p. 18, www.cideas.cz. keywords: beam; connection; fig; fire; temperature cache: ap-1101.pdf plain text: ap-1101.txt item: #81 of 1656 id: ap-1103 author: Kallerová, P.; Wald, F.; Sokol, Z. title: Connections of Trapezoidal Sheets under Fire date: 2009 words: 3354 flesch: 62 summary: In test set C, trapezoidal sheets with measured thickness 0.75 mm, width 75 mm and length 500 mm were tested. The temperatures of the connection were measured by a thermocouple attached to the steel sheet close 82 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 49 No. 1/2009 Connections of Trapezoidal Sheets under Fire P. Kallerová, F. Wald, Z. Sokol This paper describes two different experiments on connections of trapezoidal sheets under elevated temperatures. keywords: fig; fire; sheet; temperature cache: ap-1103.pdf plain text: ap-1103.txt item: #82 of 1656 id: ap-1105 author: Rajnoha, J. title: Multi-Condition Training for Unknown Environment Adaptation in Robust ASR Under Real Conditions date: 2009 words: 4428 flesch: 51 summary: The decrease by 29 % and 14 % in word error rate in comparison with clean speech training data was achieved for the non-adapted and adapted system, respectively. 20 50 100 200 500 1000 all time 65 s 2.8 min 5.7 min 10.9 min 26.9 min 57.2 min 7.8 h Table 3: Average amount of speech data for limited adaptation subsets ALL OFFICE CAR CLEAN NOISY HISNR LOSNR AVG avg avg CS0 CS1 CS0 CS1 CS0 CS1 CS0 CS1 CS0 CS1 CS0 CS1 CS0 CS1 CS0 CS1 noSS 8.32 14.72 3.47 8.14 7.03 35.17 4.0 11.07 13.09 18.79 7.03 10.2 11.88 17.65 12.18 7.83 16.53 SS 8.46 13.53 4.17 8.01 5.2 29.97 4.45 9.82 11.31 16.56 6.83 9.41 11.76 16.31 11.13 7.45 14.8 Imp. �1.68 8.08 �20.17 1.6 26.03 14.79 �11.25 11.29 13.6 11.87 2.84 7.75 1.01 7.59 8.66 4.82 10.48 Table 4: WER for different environmental conditions w/o and with ESS in front-end processing. keywords: adaptation; conditions; cs0 cs1; data; models; multi; noise; recognition; speech; training cache: ap-1105.pdf plain text: ap-1105.txt item: #83 of 1656 id: ap-1107 author: Hekrdla, M. title: A Constellation Space Dimensionality Reduced Sub-Optimal Receiver for Orthogonal STBC CPM Modulation in a MIMO Channel date: 2009 words: 5472 flesch: 62 summary: The physically distinguishable phase is due to the harmonic func- tion periodicity taken � � �� ( ) mod2 . The information-car- rying tilted phase is � � �( , ) ( , ) ( )t t h M Tsd d� � �1 1 , where�( , )t d is the original classic CPM phase. keywords: b �; cpm; d �; h �; l �; s t; s �; space; t t; vn �; � � cache: ap-1107.pdf plain text: ap-1107.txt item: #84 of 1656 id: ap-1109 author: Gross, S.; Kollenbrandt, M. title: Technical Evolution of Medical Endoscopy date: 2009 words: 4419 flesch: 51 summary: 8 Computer-based image processing in medical endoscopy Image processing is a crucial part of the efforts to increase the quality and significance of medical images. The increased significance of endoscopic images by means of image processing is the topic of section 8. keywords: body; camera; endoscopy; field; images; imaging; light; medical; section; technical; video; vol cache: ap-1109.pdf plain text: ap-1109.txt item: #85 of 1656 id: ap-1111 author: Bolom, V. title: Noise Reduction in Car Speech date: 2009 words: 5177 flesch: 63 summary: Under these assumptions it holds � � �� � � xs j T sx j T ss j i M i M M M X e X e� � � �� � ��2 1 11 1 , (12) � ( ) ( ) ,� � � xx keywords: car; fig; input; interference; j t; noise; signal; speech; t �; � � cache: ap-1111.pdf plain text: ap-1111.txt item: #86 of 1656 id: ap-1113 author: Flouri, T. title: On Tree Pattern Matching by Pushdown Automata date: 2009 words: 5807 flesch: 66 summary: � � �� � � � � �� (2) � � � � � �� 3 A Deterministic Pushdown Automaton accepting trees in prefix notation The prefix notation of a tree can be generated by a gram- mar G N T P S� ( , , , ), having rules P of the following form: (1)S a� 0 (2)S a S� 1 (3)S a SS� 2 … (n)S a Sn n � � � 1 1 30 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 49 No. 2–3/2009 Since the grammar is LR(0), belonging to the subclass of context-free grammars named as deterministic context free grammars, the generated language belongs to the class of de- terministic context-free languages and can be recognised by a de- terministic pushdown automaton. keywords: automaton; pattern; prefix; pushdown; s �; tree; � � cache: ap-1113.pdf plain text: ap-1113.txt item: #87 of 1656 id: ap-1115 author: Meiwes, H. title: Technical and Economic Assessment of Storage Technologies for Power-Supply Grids date: 2009 words: 5777 flesch: 49 summary: A comprehensive overview of storage technologies as well as possible applications and business cases for storage systems is presented. In this situation the operation of energy storage systems can help to allow a higher amount of renewable energy sources (RES) by stabilizing the grid and finally decreasing the consumption of fossil fuels. keywords: applications; batteries; battery; caes; costs; efficiency; energy; grid; power; range; storage; systems; technologies; technology cache: ap-1115.pdf plain text: ap-1115.txt item: #88 of 1656 id: ap-1117 author: Janda, J. title: Age Dependence of Children’s Speech Parameters date: 2009 words: 2762 flesch: 56 summary: The above-mentioned spectral characteristics of sibilant consonants were measured for consonants /s/, /ss/ and /cc/. Significant features were especially the rise in the spectral cen- tre of gravity (r � 0 45. , p � 0001. , n �193) (Fig. 3, 4) and the reduction in spectral skewness (r � �0 47. , p � 0001. , n �193) (Fig. 2) at consonant /s/ (p � 0001. , n �193) and F2 had r � �034. keywords: age; centre; spectrum; speech cache: ap-1117.pdf plain text: ap-1117.txt item: #89 of 1656 id: ap-1119 author: Cingroš, F.; Hron, T. title: Working Fluid Quantity Effect on Magnetic Field Control of Heat Pipes date: 2009 words: 2678 flesch: 49 summary: Keywords: Heat pipes, magnetic field, variable conductance, oxygen, cryogenic. Fig. Heat pipes are commonly used for cooling and heat transport in electronic devices, techno- logical processes and in many other types of equipment. keywords: field; fluid; heat; mpa; pipe; temperature cache: ap-1119.pdf plain text: ap-1119.txt item: #90 of 1656 id: ap-1121 author: Chvalina, M. title: Demand Modelling in Telecommunications date: 2009 words: 2933 flesch: 50 summary: i i � � � � 0 because � �( )1 1 0 � � � � � i applies to the mean value and dispersion E y E yt t( � ) ( )� � �0, D yt a y( � ) � � � � � � � � � � 2 2 2 2. 48 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 49 No. 2–3/2009 Demand Modelling in Telecommunications Comparison of Standard Statistical Methods and Approaches Based upon Artificial Intelligence Methods Including Neural Networks M. Chvalina This article analyses the existing possibilities for using Standard Statistical Methods and Artificial Intelligence Methods for a short-term forecast and simulation of demand in the field of telecommunications. Network signal propagation: V g h g w Vi l i l ij l j l k � � � � � � � � � � ��( ) 1 . 4. keywords: demand; series; t t; t �; time; y y; � � cache: ap-1121.pdf plain text: ap-1121.txt item: #91 of 1656 id: ap-1123 author: Nevrkla, M. title: Capillary Discharge XUV Radiation Source date: 2009 words: 3430 flesch: 55 summary: The electric strength E field picture in the region of E � �( . . ) These states appear in plasma with a electron temperature of Te ~ 100 eV. Such hot plasma with sufficient electron density Ne > 1017 cm�3 is created by radial compression of a plasma column by the Lorentz force FL of a magnetic field B of flowing current I – a Z-pinch. keywords: capillary; charging; coil; current; discharge; fig; voltage; � � cache: ap-1123.pdf plain text: ap-1123.txt item: #92 of 1656 id: ap-1125 author: Havelka, D.; Cifra, M. title: Calculation of the Electromagnetic Field Around a Microtubule date: 2009 words: 4091 flesch: 54 summary: The size of the dipole moment was defined by the function: pp p n� � �sin( )2� , (17) where n is the value of the matrix element corresponding to a certain heterodimer, and for p see Table 2. 3.3 Depiction of the direction and magnitude of the electric field The size of the electric field (EF) was drawn by function surf, see e.g. Fig. 6. [nm] 2 �4.92 3 �1.84 4 �6.76 5 �3.68 6 �0.6 7 2.48 8 �2.44 9 0.64 10 �4.28 11 �1.2 12 �6.12 13 �3.04 Table 1: Longitudinal shift of PT in the A-lattice Dipole moment: p � �10 26 Cm (1000 Debye) keywords: dipole; electric; emf; field; fig; phase; vol; � � cache: ap-1125.pdf plain text: ap-1125.txt item: #93 of 1656 id: ap-1127 author: Bauer, J. title: Development of a Compact Matrix Converter date: 2009 words: 3045 flesch: 54 summary: Keywords: Matrix converter, direct frequency converter, filter design. Matrix converters belong to the category of direct frequency converters. keywords: board; converter; fig; filter; frequency; matrix; power; switching cache: ap-1127.pdf plain text: ap-1127.txt item: #94 of 1656 id: ap-1129 author: Mašek, P. title: A New Buck-Boost Converter for a Hybrid-Electric Drive Stand date: 2009 words: 2672 flesch: 52 summary: /SVE /TUR /UKR /ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing. (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke. keywords: converter; engine; power; splitter; stand; voltage cache: ap-1129.pdf plain text: ap-1129.txt item: #95 of 1656 id: ap-1131 author: Adamec, M. title: Transformation of Commercial Flows into Physical Flows of Electricity – Flow Based Method date: 2009 words: 3584 flesch: 56 summary: The baseband representation of the signal is then after the DSP the resulting LINC signals can be written as S t Va t k t t1 1 2 ( ) ( ) exp( ( ) ( ))� �� � , (3) S t Va t k t t2 1 2 ( ) ( ) exp( ( ) ( ))� �� � . Theory The baseband source signal of CLIER S(t) can be written as S t a t e j t( ) ( ) ( )� � , a t( ) ,� 0 (1) where a(t) is the envelope of the baseband input signal and ej�(t) describes the phase of the baseband input signal. keywords: efficiency; fig; network; power; recycling; signal; � � cache: ap-1131.pdf plain text: ap-1131.txt item: #96 of 1656 id: ap-1133 author: Wang, F.; Koch, O. title: Implementation of a Power Combining Network for a 2.45 GHz Transmitter Combining LINC and EER date: 2009 words: 3584 flesch: 56 summary: The baseband representation of the signal is then after the DSP the resulting LINC signals can be written as S t Va t k t t1 1 2 ( ) ( ) exp( ( ) ( ))� �� � , (3) S t Va t k t t2 1 2 ( ) ( ) exp( ( ) ( ))� �� � . Theory The baseband source signal of CLIER S(t) can be written as S t a t e j t( ) ( ) ( )� � , a t( ) ,� 0 (1) where a(t) is the envelope of the baseband input signal and ej�(t) describes the phase of the baseband input signal. keywords: efficiency; fig; network; power; recycling; signal; � � cache: ap-1133.pdf plain text: ap-1133.txt item: #97 of 1656 id: ap-1135 author: Frydryšková, J. title: Importance of Peaceful Utilization of Nuclear Energy date: 2009 words: 2597 flesch: 48 summary: These events also influenced the establishment of research on nuclear energy in Czechoslovakia, and 1955 was the year when the USSR, motivated by political and power aims, offered to provide scientific and technical support for a scien- tific institute for nuclear research to design reconstruction a nuclear reactor. The IAEA was created in response to the deep fears and great expectations resulting from the discovery of nuclear energy, fears and expectations that have changed profoundly since 1945 and continue to fluctuate. keywords: adobe; bomb; energy; institute; new; nuclear; prague; research; soviet cache: ap-1135.pdf plain text: ap-1135.txt item: #98 of 1656 id: ap-1137 author: Dirix, M.; Koch, O. title: 2.45 GHz Class E Power Amplifier for a Transmitter Combining LINC and EER date: 2009 words: 3219 flesch: 53 summary: I I t I ts DC R R( ) sin( ) sin( ) sin( )� � � � � �� � � � � � . The current can be described as i t I tR R( ) sin( )� � �� � . keywords: amplifier; class; current; fig; output; power; switch; voltage; � � cache: ap-1137.pdf plain text: ap-1137.txt item: #99 of 1656 id: ap-1139 author: Brož, J.; Rieger, F. title: Mixing Suspensions in Tall Vessels with a Draught Tube date: 2010 words: 1028 flesch: 67 summary: The power number at the speed necessary to initiate particle suspension Pop does not differ significantly from the power number at the speed necessary to keep a particle in suspension Pok, and its mean value is Po � �163 007. . . 2 Modifications to a draught tube for particle suspension The main disadvantage of this arrangement is that parti- cle suspension is difficult after mixing has been interrupted. keywords: fig cache: ap-1139.pdf plain text: ap-1139.txt item: #100 of 1656 id: ap-1141 author: Kučera, O. title: Self Heating of an Atomic Force Microscope date: 2010 words: 1804 flesch: 65 summary: 4: An example of pure contact noise superimposed on the drift of PSPD voltage. Although, tools that protect AFM against external noise have been developed and are widely used, there are still many sources of inherent noise. keywords: afm; force; noise cache: ap-1141.pdf plain text: ap-1141.txt item: #101 of 1656 id: ap-1143 author: Ficker, T. title: A Note on the Population Statistics of Electron Avalanches and Streamers date: 2010 words: 733 flesch: 56 summary: The quantity g in Fig. 2 seem- ingly has a similar purpose as a normalization constant, i.e. w u g f U( ) ( )� � , but instead of the normalization correction it represents a ‘shift’ between unnormalized data and the unnormalized distribution function F(u). Keywords: Population statistics, electron avalanches, fractal statistical pattern, ultraviolet data. keywords: � � cache: ap-1143.pdf plain text: ap-1143.txt item: #102 of 1656 id: ap-1145 author: Hájek, J. title: Adaptation of an Evolutionary Algorithm in Modeling Electric Circuits date: 2010 words: 2953 flesch: 66 summary: Another strategy, known as DE/best, generates mutation vec- tor u as follows: u � � �x F r rmin ( )1 2 . � � , (8) L L f R N N 1 12norm � � . keywords: algorithm; population; � � cache: ap-1145.pdf plain text: ap-1145.txt item: #103 of 1656 id: ap-1147 author: Vyroubal, J. title: Using the Spindle Cooling Temperature as a Tool for Compensating the Thermal Deformation of Machines date: 2010 words: 2292 flesch: 64 summary: This delay can cancel the thermal compensation of machine deformation. In terms of heat generation, the spindle is the major source of heat, and its thermal deformation is a ma- jor cause of overall machine deformation. keywords: deformation; machine; sensors; spindle cache: ap-1147.pdf plain text: ap-1147.txt item: #104 of 1656 id: ap-1149 author: Večeř, P.; Kreidl, M.; Šmíd, R. title: Gearbox Condition Monitoring Using Advanced Classifiers date: 2010 words: 4511 flesch: 64 summary: Layer 2: This layer simply multiplies the incoming member- ship values according to a node function: � � �i x y� A B( ) ( ), (5) where �A represents the degree to which given x satisfies the quantifier Ai, 24 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 50 No. 1/2010 knowledge-rule fuzzifier defuzzifier fuzzy inference engineinput output (crisp)(crisp) Fig. [12]: � �d x t w tj i ij i N � � � � � ( ) ( ) 2 0 1 , (1) where xi is the i-th element of input vector x in time t, wij is the i-th value of the weight vector for the j-th output neuron in time t. keywords: anfis; data; gearbox; gearboxes; input; layer; som; technical; vector; � � cache: ap-1149.pdf plain text: ap-1149.txt item: #105 of 1656 id: ap-1151 author: Mocková, D. title: Allocation and Location of Transport Logistics Centres date: 2010 words: 3611 flesch: 50 summary: The difficulty of multiple criteria evaluation tasks results not only from the number of evaluation criteria, but also from how these criteria are expressed and from the degree which they are dependent on their nature in various units of measurement. 1.3 Multiple criteria decision making Multiple criteria decision making involves modeling deci- sion-making situations containing a defined set of options and a set of criteria according to which the options will be evaluated. keywords: criteria; decision; evaluation; making; options; problem cache: ap-1151.pdf plain text: ap-1151.txt item: #106 of 1656 id: ap-1153 author: Pfof, Z.; Vaculík, P. title: Ultracapacitors Utilization for Automotive Applications date: 2010 words: 2275 flesch: 62 summary: The ultracapacitor also has other advantages – it is capable of very fast charges and dis- charges, a millions of cycles without degradation, extremely low internal resistance or ESR, high output power, etc. Ultracapacitors cannot yet be used as a primary power source in automotive applications. Power losses of hard-switching vs. soft-switching Hard-switching is very widely used for power inverters, whereas soft-switching is used only in high frequency applications. keywords: converter; power; switching; ultracapacitors; voltage cache: ap-1153.pdf plain text: ap-1153.txt item: #107 of 1656 id: ap-1155 author: Ficker, T. title: Statistical Distributions of Electron Avalanches and Streamers date: 2010 words: 4436 flesch: 59 summary: As a consequence of this condition, one can find J dmax � � �� 1 0and, in addition, N d� �exp( exp( )� �� . Assuming linear proportionality u c n� � , the curve w u c u D 1 0 1( ) ( )� � � � will preserve the same shape as w n1( ), i.e. they will both possess the same slope� �( )1 D . keywords: avalanches; statistics; vol; � � cache: ap-1155.pdf plain text: ap-1155.txt item: #108 of 1656 id: ap-1157 author: Vaněček, D.; Klement, V. title: Electronic Education at the Faculty of Nuclear Sciences and Physical Engineering date: 2010 words: 3070 flesch: 57 summary: The next milestone of e-learning was during the period of 1984 and 1993. First attempts to introduce e-learning appeared around the year 1999, and since then the number of projects dealing with this topic is increasing. keywords: education; faculty; internet; learning; students; support cache: ap-1157.pdf plain text: ap-1157.txt item: #109 of 1656 id: ap-1159 author: Amann, W. title: New Policies to Facilitate Affordable Housing in Central and Eastern Europe date: 2010 words: 3732 flesch: 51 summary: Keywords: affordable housing, housing law, housing construction, CEE countries, Romania. and landlords, a Condominium Law, a Housing Manage- ment and Maintenance Law that covers all regulations in the field of housing operation, administration, accounting, main- tenance and refurbishment, and a Housing Subsidy Law that defines the legal basis for all activities of the state in (co-)financing housing construction, refurbishment, housing benefits and related activities. 3 Structured financing for PPP housing PPP housing legislation has been described as a strategy leading toward the establishment of a new business sector, targeting at affordable housing, particularly rental housing (UNECE 2005a, Lux 2006, Chiquier/Lea 2009). keywords: affordable; amann; construction; countries; financing; housing; market; ppp; rental cache: ap-1159.pdf plain text: ap-1159.txt item: #110 of 1656 id: ap-1161 author: Frank, H. title: Differences Between Doped and Undoped Zirconium Alloy Oxide Layers date: 2010 words: 1818 flesch: 57 summary: At lower temperatures, the samples had normal I-V characteristics of the form of eq. 1 with space-charge limited currents, which tended to become linear at higher temperatures. 7: Equal temperature dependence of mobility in both samples Fig. 8: Equal temperature dependence of carrier concentra- tion in both samples energy. keywords: fig; samples; temperature cache: ap-1161.pdf plain text: ap-1161.txt item: #111 of 1656 id: ap-1163 author: Granja, C.; Linhart, V.; Platkevič, M.; Jakůbek, J.; Krouský, E.; Pospíšil, S.; Renner, O.; Slavíček, T. title: Active Detectors for Plasma Soft X-Ray Detection at PALS date: 2010 words: 4344 flesch: 56 summary: Two types of detector systems have been adapted for this purpose: hybrid semiconductor pixel detectors, and fast scintillating detectors. Fig. 4: BaF2 detector with lead (Pb), Aluminum (Al) and Polyethylene (PE) shield Fig. 5: Shield assembly for BaF2 detector with lead (Pb), Aluminum (Al) and Polyethylene (PE) segments. keywords: detector; energy; figure; laser; physics; plasma; prague; radiation; shield; target cache: ap-1163.pdf plain text: ap-1163.txt item: #112 of 1656 id: ap-1165 author: Šulc, R.; Svačina, O. title: Flock Growth Kinetics for Flocculation in an Agitated Tank date: 2010 words: 3869 flesch: 57 summary: Using the statistical hypothesis test, the fractal dimension was found to be independent of flocculation time, and the value Df2 = 1.442± 0.125 was determined as the average value for the given conditions. For flocculation taking place in an agitated tank, Šulc and Ditl [2] recommend dimension- less flocculation time t∗F given by: t∗F = n · tF (3) where tF is flocculation time, and n is impeller rota- tional speed. keywords: correlation; dimension; flocculation; flock; fractal; kinetics; model; size; time cache: ap-1165.pdf plain text: ap-1165.txt item: #113 of 1656 id: ap-1167 author: Zahradnický, T.; Lórencz, R. title: FPU-Supported Running Error Analysis date: 2010 words: 4409 flesch: 63 summary: Running error analysis and error bounds Running error analysis [6, 7] is a type of a-posteriori forward error analysis. No. 2/2010 FPU-Supported Running Error Analysis T. Zahradnický, R. Lórencz Abstract A-posteriori forward rounding error analyses tend to give sharper error estimates than a-priori ones, as they use actual data quantities. keywords: analysis; double; error; precision; result; rounding; running cache: ap-1167.pdf plain text: ap-1167.txt item: #114 of 1656 id: ap-1169 author: Cisek, J. title: Injection and Combustion of RME with Water Emulsions in a Diesel Engine date: 2010 words: 4610 flesch: 54 summary: Diesel Fuel – standard diesel fuel, RME – rapeseed methyl ester, RME+10 % – emulsion 90 % RME+10 % water, RME+30 % – emulsion 70 % RME+30 % water Fig. 3: Fuel consumption Gh and specific fuel consumption ge at 1 600 rpm and BMEP=4 bar with different fuels Diesel Fuel – standard diesel fuel, RME – rapeseed methyl ester, RME+10 % – emulsion 90 % RME+10 % water, RME+30 % – emulsion 70 % RME+30 % water Fig. 4: Total efficiency at 1 600 rpm and BMEP=4 bar with different fuels The plot in Fig. keywords: combustion; diesel; diesel fuel; emulsion; fig; fuel; injection; rme; water cache: ap-1169.pdf plain text: ap-1169.txt item: #115 of 1656 id: ap-1171 author: Dostál, M.; Petera, K.; Rieger, F. title: Measurement of Heat Transfer Coefficients in an Agitated Vessel with Tube Baffles date: 2010 words: 6066 flesch: 60 summary: Keywords: heat transfer coefficients, agitated vessels, tube baffles. Dimensionless parameters are usually used to de- scribe the relation between heat transfer coefficients and other parameters, e.g. mixing intensity. keywords: baffles; cooling; heat; heat transfer; heating; liquid; number; temperature; transfer; tube cache: ap-1171.pdf plain text: ap-1171.txt item: #116 of 1656 id: ap-1173 author: Koller, J. title: Treatment of Biogas for Use as Energy date: 2010 words: 2670 flesch: 52 summary: Abstract The biogas generated in biogas plants offers significant potential for the production of energy from renewable energy sources. Biogas plants usually use co-generation units to generate electricity and heat. keywords: biogas; energy; fermentation; heat; plant; production; substrates cache: ap-1173.pdf plain text: ap-1173.txt item: #117 of 1656 id: ap-1175 author: Sajbrt, V.; Rosol, M.; Ditl, P. title: A Comparison of Distillery Stillage Disposal Methods date: 2010 words: 4279 flesch: 60 summary: No. 2/2010 Table 3: All operating costs of the fertilizing process line Total cost – electric energy for centrifuge: 60 EUR/day 3.9 % Total cost – gas for evaporation: 1 120 EUR/day 73.2 % Total transport costs on the fields: 70 EUR/day 4.6 % Total neutralization costs: 170 EUR/day 11.1 % Total costs for pre-treatment of condensate from evaporation: 110 EUR/day 7.2 % TOTAL OPERATING COSTS: 1 530 EUR/day 100.0 % 13 EUR/m3 duce biogas and digestate). • 1 kg of Ca(OH)2 for stillage neutralization costs 3.80 CZK (0.15 �). keywords: costs; day; energy; eur; method; operating; production; stillage; total cache: ap-1175.pdf plain text: ap-1175.txt item: #118 of 1656 id: ap-1177 author: Zueva, G. A.; Padokhin, V. A.; Ditl, P. title: Stochastic Models of Solid Particles Grinding date: 2010 words: 3433 flesch: 56 summary: Mathematical models of disintegration kinetics are classified on the basis of the class of Markov process that they belong to. Keywords: Markov processes, grinding kinetics models, density of distribution. keywords: device; distribution; markov; process; processes cache: ap-1177.pdf plain text: ap-1177.txt item: #119 of 1656 id: ap-1179 author: Azcárraga, J. A. de; Izquierdo, J. M. title: Topics on n-ary Algebraic Structures date: 2010 words: 4411 flesch: 85 summary: 1 Introduction The Jacobi identity (JI) for Lie algebras g, [X, [Y, Z]]+ [Y, [Z, X ]] + These two identities show that the inner derivations adX associated with the fundamental ob- jects X generate (the ad map is not necessarily injec- tive) an ordinary Lie algebra, the Lie algebra associ- ated with the FA G. An important type of FAs, because of its rele- vance in physical applications where a scalar product is usually needed (as in the Bagger-Lambert-Gustavsson model in M-theory), is the class of metric Filippov al- gebras. keywords: algebras; lie cache: ap-1179.pdf plain text: ap-1179.txt item: #120 of 1656 id: ap-1181 author: Bandos, I. A. title: On multiple M2-brane model(s) and its N=8 Superspace Formulation(s) date: 2010 words: 6321 flesch: 71 summary: Here we speak in terms of the case with M �= N , which is terminologically simpler, but all our arguments clearly also apply for M = N . 8), and a Spin(8) 8s- plet of Majorana anticommuting Sl(2;R) spinor fields ψA (A = 1, . . . keywords: action; algebra; blg; gauge; hep; model; sdiff3; spinor; superfield; superspace cache: ap-1181.pdf plain text: ap-1181.txt item: #121 of 1656 id: ap-1183 author: Fedoruk, S. title: Superconformal Calogero Models as a Gauged Matrix Mechanics date: 2010 words: 4382 flesch: 75 summary: = 1 superconformal systems must possess N = 4 supersymmetry The hermitian n×n-matrix field Xb a(t), (Xb a) = Xa b , a, b = 1, . . keywords: action; calogero; gauge; phys; superconformal cache: ap-1183.pdf plain text: ap-1183.txt item: #122 of 1656 id: ap-1185 author: Gazeau, J. P.; Baldiotti, M. C.; Gitman, D. M. title: Coherent State Quantization and Moment Problem date: 2010 words: 3989 flesch: 73 summary: Let us introduce the centre-coordinate operators x̂10 = x̂1 − 1 μω P̂2 , x̂20 = x̂2 + 1 μω P̂1 , (25) where ω = eB/μ is the cyclotron frequency. The number operator N̂ = â†â is such that its spectrum is exactly N with eigenvectors en : N̂ |en〉 = n|en〉. keywords: coherent; operator; quantization; states cache: ap-1185.pdf plain text: ap-1185.txt item: #123 of 1656 id: ap-1187 author: Kerner, R. title: Lorentz and SU(3) Groups Derived from Cubic Quark Algebra date: 2010 words: 3821 flesch: 64 summary: There is one drawback here, namely, the multi- plication does not close under the Z3-graded ternary commutator: one needs to form real and imaginary combinations of K and K̄ cubic matrices in order to make the corresponding ternary algebra complete. For α′ = 1′ the ρ-matrix on the right-hand side is ρ1 ′ A′B′C′ , which has only three components, ρ1 ′ 1′2′1′ = 1, ρ1 ′ 2′1′1′ = j2, ρ1 keywords: algebra; generators; indices; matrices; quark; space cache: ap-1187.pdf plain text: ap-1187.txt item: #124 of 1656 id: ap-1189 author: Mickelsson, J. title: From Gauge Anomalies to Gerbes and Gerbal Representations: Group Cocycles in Quantum Theory date: 2010 words: 4371 flesch: 74 summary: Then we investigate how group cohomology of degree 3 comes from a prolongation problem for group extensions and we discuss its role in quantum field theory. In Section 3 we then explain how 3-cocycles come from a prolongation problem for group extensions. keywords: algebra; cocycle; extension; gauge; group; lie; representation; theory cache: ap-1189.pdf plain text: ap-1189.txt item: #125 of 1656 id: ap-1191 author: Sorokin, D. title: Higher-Spin Triplet Fields and String Theory date: 2010 words: 4302 flesch: 69 summary: In particular, I would like to discuss a sys- tem of higher spin fields which are called triplets. People have worked in this direction since the early years of String Theory, and this is how, for example, the system of higher spin triplet fields was first found [4]. keywords: fields; formulation; gauge; phys; spin; string; theory; triplet cache: ap-1191.pdf plain text: ap-1191.txt item: #126 of 1656 id: ap-1193 author: Todorov, I. title: Gause Symmetry and Howe Duality in 4D Conformal Field Theory Models date: 2010 words: 5805 flesch: 68 summary: Simple symmetries: Gen- eralizing conformal field theory, J. Math. Phys. B670 (2003) 373–400; hep-th/0305200. 60 Acta Polytechnica Vol. 50 No. 3/2010 [35] Nikolov, N. M., Rehren, K.-H., Todorov, I. T.: Partial wave expansion and Wightman positiv- ity in conformal field theory, Nucl. keywords: algebras; conformal; fields; group; infinite; lie; math; phys; space; theory cache: ap-1193.pdf plain text: ap-1193.txt item: #127 of 1656 id: ap-1195 author: Znojil, M. title: Time-Dependent and/or Nonlocal Representations of Hilbert Spaces in Quantum Theory date: 2010 words: 4522 flesch: 60 summary: Appendix A: Hilbert space in our present notation In our review paper Hilbert space H(F ). keywords: hilbert; models; phys; quantum; space; theory; vol; znojil cache: ap-1195.pdf plain text: ap-1195.txt item: #128 of 1656 id: ap-1197 author: Bičák, J. title: Gravitomagnetism (extended abstract) date: 2010 words: 973 flesch: 48 summary: In more recent papers [5, 6], we show that within General Relativity, any general statement of Mach’s principle that attributes all dragging of inertial frames solely to the distribution of energy and momentum of matter as the origin of inertia is false: Gravitomagnetic effects are also caused by gravitational waves. One has to realize that the physical effects associated with Mach’s ideas, e.g. the “dragging of inertial frames” (“gravitomag- netic effects”) have a global character and require spe- cial coordinate systems, special gauges. keywords: inertial; mach; principle cache: ap-1197.pdf plain text: ap-1197.txt item: #129 of 1656 id: ap-1199 author: Caprini, I.; Fischer, J.; Vrkoč, I. title: Asymptotic Power Series of Field Correlators date: 2010 words: 3116 flesch: 72 summary: [6] Caprini, I., Fischer, J., Vrkoč, I.: J. Phys. ap-3-10.dvi Acta Polytechnica Vol. 50 No. 3/2010 Asymptotic Power Series of Field Correlators I. Caprini, J. Fischer, I. Vrkoč keywords: function; lemma; phys cache: ap-1199.pdf plain text: ap-1199.txt item: #130 of 1656 id: ap-1201 author: Doebner, H.-D. title: On Global and Nonlinear Symmetries in Quantum Mechanics date: 2010 words: 4154 flesch: 60 summary: one obtains nonlinear differential operators DN through tangent maps with N ∈ NG. A discussion of these relations is the topic of my paper: The global structure of the set {Q(M, K)} of quantizations of the kinematics in a Hilbert space H is connected with a nonlinear representation of a matrix group G which leads also to a quantization of other observables through nonlinear operators. keywords: differential; k(m; nonlinear; operators; quantum cache: ap-1201.pdf plain text: ap-1201.txt item: #131 of 1656 id: ap-1203 author: Engelen, J. title: Physics on the Terascale (extended abstract) date: 2010 words: 988 flesch: 52 summary: In addition, the huge amounts of data of 15 PetaBytes per year required a new approach to com- puting: the now operational worldwide LHC comput- ing GRID (wLCG), also serving as a platform for ap- plications outside high energy physics. Moreover, experiments able to cope with the in- teraction rate at this energy needed new concepts in detector technology and on-line selection of poten- tially interesting events (‘triggering’). keywords: higgs; lhc; magnets cache: ap-1203.pdf plain text: ap-1203.txt item: #132 of 1656 id: ap-1205 author: Furlan, P.; Petkova, V. B.; Stanishkov, M. title: A Finite Liouville Dress for c date: 2010 words: 3102 flesch: 65 summary: = − 4 sinπb ( β1 − σ1 − σ2 + b 2 ) = λ 1 2b (Q−2β) L Sb(2β −Q)∏ s=± Sb(β + s(σ2 + σ1 −Q))Sb(β + s(σ2 − σ1)) , where Sb(α) = Γb(α)/Γb(Q− α) keywords: correlator; liouville cache: ap-1205.pdf plain text: ap-1205.txt item: #133 of 1656 id: ap-1207 author: Ivanov, E. title: M2-Branes in N = 3 Harmonic Superspace date: 2010 words: 3461 flesch: 67 summary: It is the conjecture that the IIB superstring on AdS5× S5 is in some sense dual to maximally super- symmetric N = 4, 4D super Yang-Mills (SYM) theory. (3.1) The gauge group acts as automorphisms of this alge- bra, gauge fields being still in the adjoint. keywords: fields; gauge; hep; shell; superfield; theory cache: ap-1207.pdf plain text: ap-1207.txt item: #134 of 1656 id: ap-1209 author: Jenni, P. title: The ATLAS Experiment Entering into Operation: Overview, Motivation and Status of the Project (extended abstract) date: 2010 words: 459 flesch: 60 summary: The ATLAS Collaboration, ‘The ATLAS Experiment at the Large Hadron Collider’, JINST 3 (2008), S08003. A general overview of ATLAS, one of the key exper- iments, has been given. keywords: atlas; overview cache: ap-1209.pdf plain text: ap-1209.txt item: #135 of 1656 id: ap-1211 author: Niederle, J.; Nikitin, A. G.; Kuriksha, O. title: Maxwell-Chern-Simons Models: Their Symmetries, Exact Solutions and Non-relativistic Limits date: 2010 words: 4180 flesch: 71 summary: A particular solution has the following form: B1 = −c1x2/ω, B2 = c1x1/ω, B3 = c3A 4, (37) E1 = c2x1/ω, E2 = c2x2/ω, E3 = c3, (38) F0 = F3 = 0, Fα = ∇αA4, α = 1, 2 (39) where A4 = c4J0(c3 √ kω) + c5Y0(c3 √ kω), J0 and Y0 are the Bessel functions of the first and second kind, respectively, c1, · · · c5 are arbitrary parameters. T 002 = F 20 + F 2, T 0a2 = 1 2 F 0F a. (11) keywords: equations; field; invariant; lagrangian; model; solutions; system cache: ap-1211.pdf plain text: ap-1211.txt item: #136 of 1656 id: ap-1213 author: Schnabl, M. title: Algebraic Solutions in Open String Field Theory – a Lightning Review date: 2010 words: 5197 flesch: 70 summary: a Lightning Review M. Schnabl Abstract In this short paper we review basic ideas of string field theory with the emphasis on the recent developments. What is string field theory? keywords: field; space; string; theory cache: ap-1213.pdf plain text: ap-1213.txt item: #137 of 1656 id: ap-1215 author: Sissakian, A. title: The Science Policy of the Joint Institute for Nuclear Research date: 2010 words: 3074 flesch: 48 summary: Prime Minister of Czechia J. Paroubek congratu- lated the audience on the 50th anniversary of JINR and noted the great role of the Dubna international physics centre in founding and developing nuclear physics in all countries – JINR Member States, in- cluding Czechoslovakia and Czechia. JINR has a huge foundation based on three “pillars”: • great experience in nuclear physics research and the world-wide recognized traditions of its scien- tific schools • a large and unique park of basic facilities for fun- damental and applied research • the status of an international intergovernmental organization For over 50 years of JINR’s existence, first-class theoretical and experimental research programmes im- plemented at JINR have led to a significant scientific output in fundamental nuclear science. keywords: activities; institute; jinr; member; nuclear; physics; programme; research; states cache: ap-1215.pdf plain text: ap-1215.txt item: #138 of 1656 id: ap-1217 author: Bauer, J. title: Single Phase Voltage Source Inverter Photovoltaic Application date: 2010 words: 2539 flesch: 68 summary: Keywords: voltage source inverter, L-C-L filter, hysteresis controller, pulse width modulation. Then the converter is supposed to generate output voltage with a sinusoidal shape, as in the supply network. keywords: control; current; fig; filter; output; voltage cache: ap-1217.pdf plain text: ap-1217.txt item: #139 of 1656 id: ap-1219 author: Behrens, A.; Röllinger, H. title: Analysis of Feature Point Distributions for Fast Image Mosaicking Algorithms date: 2010 words: 3994 flesch: 60 summary: However, in the case of small and sparse sets of feature points of fixed size, suitable for real-time image mosaicking algorithms, a uniform spatial feature distribution across the image becomes relevant. For this application, a fixed num- ber of feature points is required for real-time process- ing [14]. keywords: distribution; feature; image; number; points; registration; set; tree cache: ap-1219.pdf plain text: ap-1219.txt item: #140 of 1656 id: ap-1221 author: Dirix, M.; Koch, O. title: Conductivity Measurements of Silverpastes date: 2010 words: 2898 flesch: 61 summary: 3: Transmission measurement of the T-Resonator Structure Table 1: Electrical conductivity measurements using the T-resonator structure Sample σ 50 No. 4/2010 Table 2: Electrical conductivity measurements using the dielectric resonator Sample σ [S/m] σ σ @1.6 GHz @2.1 GHz @2.7 GHz Copper 5.53E7 5.35E7 5.65E7 07120902 5.89E+006 5.61E+006 5.43E+006 07120910 5.35E+006 4.98E+006 5.50E+006 07120913 4.42E+006 4.35E+006 4.48E+006 07120914 4.45E+006 4.47E+006 4.73E+006 07120915 4.40E+006 4.63E+006 4.62E+006 07120916 4.35E+006 4.68E+006 4.63E+006 07120917 5.50E+006 5.72E+006 5.67E+006 07120918 5.50E+006 5.50E+006 5.50E+006 5 Conclusion A T-resonator structure for measuring electrical con- ductivity has been realised for 500 MHz and 1.5 GHz. keywords: conducting; conductivity; conductor; dielectric; resonator; � quarter; � � cache: ap-1221.pdf plain text: ap-1221.txt item: #141 of 1656 id: ap-1223 author: Drnek, K. title: Prague’s Sewerage System in the 1930’ and the General Sewerage Project (1933–1936) date: 2010 words: 3487 flesch: 75 summary: 1: Picture of the original “Máslo-Douda” project While the Douda-Máslo project was passing through the authorization procedures, Ing. Zika, the chief of Prague’s sewers, introduced new projects to build sewage plants with biological purification either in Řež or on Imperial Island. [1] Keclík, T.: The competition on a general project for new sewage plants for the capital city Prague. keywords: ing; plant; project; sewage; sludge; system cache: ap-1223.pdf plain text: ap-1223.txt item: #142 of 1656 id: ap-1225 author: Faltin, P.; Behrens, A. title: Projective 3D-reconstruction of Uncalibrated Endoscopic Images date: 2010 words: 3842 flesch: 66 summary: The concept is that the projection lines through the camera centers �C and �C ′ and the image points �x and �x ′ intersect in the 3D point �X , as shown in fig. The 3D-point �X is pro- jected onto the image planes, resulting in points �x and �x ′. The points �e and �e ′ are called epipoles, and they represent the projected camera centers on the image planes. keywords: camera; correspondences; fig; geometry; image; reconstruction; view cache: ap-1225.pdf plain text: ap-1225.txt item: #143 of 1656 id: ap-1227 author: Fikejz, F. title: Subjective Evaluation of Audiovisual Signals date: 2010 words: 3810 flesch: 69 summary: Younger people mostly give preference to music like sample no. 1, and they do not have much experi- ence with classical music and Gregorian chant. Keywords: subjective test, audiovisual signal quality, compression, JPEG, MP3. keywords: combination; image; quality; samples; sound; subjects; test cache: ap-1227.pdf plain text: ap-1227.txt item: #144 of 1656 id: ap-1229 author: Grabowski, M.; Buchenauer, A. title: Valve Concepts for Microfluidic Cell Handling date: 2010 words: 3807 flesch: 61 summary: To avoid the disadvantages of valve type 2, which are explained in detail in the results, we designed a subtype of this geometry. Figures 12, 13 and 14 show the simulation results for valve type 2. keywords: cell; channel; fig; layer; microfluidic; type; valve cache: ap-1229.pdf plain text: ap-1229.txt item: #145 of 1656 id: ap-1231 author: Hajný, O.; Farkašová, B. title: A Study of Gait and Posture with the Use of Cyclograms date: 2010 words: 2347 flesch: 64 summary: Keywords: simulation, human body model, walking, artificial intelligence, gait angles, bilateral cyclograms. 1 Methods For a study of gait angles, we decided to use meth- ods based on measurements of the geometric proper- ties of bilateral cyclograms (also called angle-angle dia- grams). keywords: angles; body; gait; human; knee; model cache: ap-1231.pdf plain text: ap-1231.txt item: #146 of 1656 id: ap-1233 author: Hübner, J. title: Capillary Discharge Parameter Assessment for X-ray Laser Pumping date: 2010 words: 2077 flesch: 66 summary: For each calculation, we listed the parameter data, information about the maximum value and the time of reaching gain, the pinch time (the time when the maximum of electron density Ne is reached). We will plot the curve for an individual quantity, such as electron density, electron temperature, inversion of population, and gain. Fig. keywords: capillary; imax; maximum cache: ap-1233.pdf plain text: ap-1233.txt item: #147 of 1656 id: ap-1235 author: Müntjes, J.; Meine, S.; Flach, E.; Görtz, M.; Hartmann, R.; Schmitz-Rode, T.; Trieu, H. K.; Mokwa, W. title: Assembly of a Pulmonary Artery Pressure Sensor System date: 2010 words: 1746 flesch: 54 summary: Her work focuses on assembly technologies in the field of pressure sensor systems in medical technology. Keywords: heart insufficiency, pressure sensor, microsystems technology, assembly. keywords: carrier; fig; pressure; sensor; system cache: ap-1235.pdf plain text: ap-1235.txt item: #148 of 1656 id: ap-1237 author: Najman, R. title: Nonlinear Aspects of Heat Pump Utilization date: 2010 words: 2158 flesch: 68 summary: Keywords: heat pumps, thermal mass of an object, coefficient of performance. These installations have a profound impact on the performance of heat pumps. keywords: heat; pump; temperature; water cache: ap-1237.pdf plain text: ap-1237.txt item: #149 of 1656 id: ap-1239 author: Pavlátka, P. title: Option Derivatives in Electricity Hedging date: 2010 words: 3350 flesch: 61 summary: ap-4-10.dvi Acta Polytechnica Vol. 50 No. 4/2010 Option Derivatives in Electricity Hedging P. Pavlatka Abstract Despite the high volatility of electricity prices, there is still little demand for electricity power options, and the liquidity on the power exchanges of these power derivatives is quite low. Keywords: option derivatives, electricity hedging, evaluation models, electricity prices. keywords: electricity; futures; hedging; market; options; price; risk cache: ap-1239.pdf plain text: ap-1239.txt item: #150 of 1656 id: ap-1241 author: Scheirich, J. title: The DEPFET Mini-matrix Particle Detector date: 2010 words: 2355 flesch: 64 summary: Clear- performance of linear DEPFET devices. A Photo of the Measuring System 73 Acta Polytechnica Vol. 50 No. 4/2010 4 Conclusions A measuring system has been designed for the DEPFET Mini-matrix particle detector. keywords: current; depfet; detector; fig; gate; noise; system cache: ap-1241.pdf plain text: ap-1241.txt item: #151 of 1656 id: ap-1243 author: Tučan, M.; Žák, P. title: Influence of Climatic Cycles on Properties of Leadfree Solders date: 2010 words: 1493 flesch: 62 summary: Keywords: climatic tests, shocks, leadfree solder. Apart from problems such as tin corro- sion and faster oxidation due to higher temperature, which appear in the production phase, there is the matter of the long-term behavior of leadfree solders. keywords: fig; leadfree; shocks; solder cache: ap-1243.pdf plain text: ap-1243.txt item: #152 of 1656 id: ap-1245 author: Uřičář, T. title: Parameter-Invariant Hierarchical Exclusive Alphabet Design for 2-WRC with HDF Strategy date: 2010 words: 5177 flesch: 59 summary: Significant capacity degradation is caused by channel parametrization, which highlights the importance of HXA design resistant to channel parametrization. The proper design of HXA is important, especially in the case of parametric channels, where channel parametrization (e.g. phase rotation) can violate the exclusive property of hierarchical symbols (as seen by the relay), resulting in significant capacity degradation. keywords: capacity; channel; design; fig; hxa; relay; signal; space cache: ap-1245.pdf plain text: ap-1245.txt item: #153 of 1656 id: ap-1247 author: Valentová, M. title: Barriers to Energy Efficiency – Focus on Transaction Costs date: 2010 words: 5444 flesch: 58 summary: Energy efficiency transaction costs can be divided into four main stages in which transaction costs can occur: the planning phase, the implementation phase, monitoring phase and the verification phase (Ta- ble 1). One factor is the actual share of energy costs in total costs, while an- other factor is the development of energy prices. keywords: barriers; costs; efficiency; energy; energy efficiency; information; level; policy; transaction; transaction costs; vol cache: ap-1247.pdf plain text: ap-1247.txt item: #154 of 1656 id: ap-1249 author: Vaněk, O. title: Agent-based Simulation of the Maritime Domain date: 2010 words: 3581 flesch: 50 summary: 50 No. 4/2010 Table 1: Main parameters of different types of vessel agents. Table 1 summarizes the main parameters of each type of vessel agent. keywords: agent; data; fishing; information; modules; simulation; time; transport; vessel cache: ap-1249.pdf plain text: ap-1249.txt item: #155 of 1656 id: ap-1251 author: Verteletskaya, E.; Sakhnov, K. title: Voice Activity Detection for Speech Enhancement Applications date: 2010 words: 2804 flesch: 66 summary: 1. VAD design involves extracting acoustic features that can appropriately indicate the probability of tar- get speech signals existing in observed signals. The performance of the proposed VAD algorithm is tested on real speech signals. keywords: algorithm; detection; energy; noise; signal; speech; vad; voice cache: ap-1251.pdf plain text: ap-1251.txt item: #156 of 1656 id: ap-1253 author: Vrbová, B.; Víšek, L. title: Simulation of Hyperthermic Treatment Using the Matrix of Stripline Applicators date: 2010 words: 2289 flesch: 53 summary: In this paper we compare the SAR distribution in a cylindrical homogeneous agar phantom (which has similar characteristics to biological tissue) and in an anatomically based biological model of the femur (which has been developed from a computer tomography scan) using a matrix of two applicators of the same type. In our case, the applicator is filled with distilled water, because 70 % of biological tissue consists of water. keywords: applicators; distribution; fig; sar; tissue cache: ap-1253.pdf plain text: ap-1253.txt item: #157 of 1656 id: ap-1261 author: Havlíček, M.; Pelantová, E.; Tolar, J. title: On Representations of sl(n, C) Compatible with a Z2-grading date: 2010 words: 5954 flesch: 66 summary: ap-5-10.dvi Acta Polytechnica Vol. 50 No. 5/2010 On Representations of sl(n, C) Compatible with a Z2-grading M. Havlíček, E. Pelantová, J. Tolar Abstract This paper extends existing Lie algebra representation theory related to Lie algebra gradings. [16], including the notion of compatibly graded representation, it is really surprising that there does not yet exist a theory of representations of graded Lie algebras compatible with a given grading. keywords: algebra; automorphism; grading; k−1; lie; matrix; representation cache: ap-1261.pdf plain text: ap-1261.txt item: #158 of 1656 id: ap-1263 author: Havlíček, M.; Pošta, S. title: The Diamond Lemma and the PBW Property in Quantum Algebras date: 2010 words: 3705 flesch: 72 summary: − bc)b = −ab2 − bab − acb − cab − bcb = −ab − bab − a(−ab − ba − ac − ca − bc)− cab − b(−ab − ba − ac − ca − bc) = −ab − bab+ a2b+ aba+ a2c+ aca+ abc − cab+ bab+ b2a+ bac+ bca+ b2c = −ab − bab+ ab+ aba+ ac+ aca+ abc − cab+ bab+ ba+ bac+ bca+ bc = aba+ ac+ aca+ abc − cab+ ba+ bac+ bca+ bc. = cb = −ab − ba − ac − ca − bc and (cb)b = (−ab − ba − ac − ca keywords: algebra; center; relations cache: ap-1263.pdf plain text: ap-1263.txt item: #159 of 1656 id: ap-1265 author: Jakubský, V. title: Aharonov-Bohm Effect and the Supersymmetry of Identical Anyons date: 2010 words: 3083 flesch: 67 summary: By contrast, the system described by H0α,− allows singular wave functions. This time, the hard-core interaction appears in both systems (neither H0+ nor HAB − has singular wave functions in its domain). keywords: anyons; system; wave cache: ap-1265.pdf plain text: ap-1265.txt item: #160 of 1656 id: ap-1267 author: Kalina, M.; Paseka, J.; Riečanová, Z. title: Sharply Orthocomplete Effect Algebras date: 2010 words: 4807 flesch: 79 summary: Lattice effect algebras are in some sense a nearest common generalization of orthomodular lattices [16] Mosná, K.: Atomic lattice effect algebras and their sub-lattice effect algebras, J. Electrical keywords: algebra; effect; lattice; s(e cache: ap-1267.pdf plain text: ap-1267.txt item: #161 of 1656 id: ap-1269 author: Kochan, D. title: Does a Functional Integral Really Need a Lagrangian? date: 2010 words: 2591 flesch: 69 summary: =∫ Rn[q1] dq1A∗(q1, t1 | q̃0, t0)A(q1, t1 | q0, t0) , δ(q1 − q0) = lim t1→t0 A(q1, t1 | q0, t0) . [1], the probability amplitude of the transition of a system from the space-time con- figuration (q0, t0) to (q1, t1) is given as follows: A(q1, t1 | q0, t0) ∝∫ keywords: integral; phys cache: ap-1269.pdf plain text: ap-1269.txt item: #162 of 1656 id: ap-1271 author: Mine, T. title: Self-adjoint Extensions of Schrödinger Operators with ?-magnetic Fields on Riemannian Manifolds date: 2010 words: 7328 flesch: 84 summary: In the case M = R 2 and K = 1, similar results are obtained in [7] and Moreover, Lisovyy [11] studies the caseM is the Poincaré disk, g is the Poincaré metric, V = 0 and dA = Bωg+2παδ0, where B is a non-zero constant and ωg is the surface form induced from the Poincaré metric g. In all the results above, they first determine the deficiency subspaces Ker(Hmax ∓ i) and apply the Krein-Von Neumann theory. keywords: define; let; min; operator cache: ap-1271.pdf plain text: ap-1271.txt item: #163 of 1656 id: ap-1273 author: Rotter, I. title: Exceptional Points and Dynamical Phase Transitions date: 2010 words: 2775 flesch: 58 summary: The nar- row resonance states appear due to resonance trap- ping, i.e. as a consequence of the alignment of a small number of resonance states to the environment (for details see [2]). Furthermore, the number of trapped resonance states is smaller than the number of individual (basic) states. keywords: environment; phase; quantum; resonance; states cache: ap-1273.pdf plain text: ap-1273.txt item: #164 of 1656 id: ap-1275 author: Shapiro, B. title: Root Asymptotics for the Eigenfunctions of Univariate Differential Operators date: 2010 words: 3276 flesch: 71 summary: d3 dz3 ; T2 = (z − I)(z + I)(z − 2 + 3I)(z − 3− 2I) d4 dz4 ; T3 = (z − I)(z + I)(z − 2 + 3I)(z − 3− 2I) (z + 3) d5 dz5 ; T4 = (z2 + 1)(z − 2 + 3I)(z − 3− 2I)(z + 3) (z + 1 + I) d6 dz6 of the form Q(z) dk dzk where Q(z) is a monic polyno- mial of degree k + 1. 77 Acta Polytechnica Vol. 50 No. 5/2010 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 0 0.5 1 1.5 2 2.5 3 -3 -2 -1 0 1 2 keywords: polynomial; root cache: ap-1275.pdf plain text: ap-1275.txt item: #165 of 1656 id: ap-1277 author: Znojil, M. title: Rectifiable PT -symmetric Quantum Toboggans with Two Branch Points date: 2010 words: 4243 flesch: 66 summary: In an opposite direction one could also contem- plate tobogganic models where a larger number of branch points would have to be taken into account. 3.2 Sequences of critical points An inspection of Figures 2 and 3 and a comparison with Figures 4 and 5 reveals that one should expect the emergence of sudden changes of the winding de- scriptors � during a smooth variation of the shift Re x Im x –6 –4 –2 –4 –2 2 Fig. keywords: tobogganic; vol cache: ap-1277.pdf plain text: ap-1277.txt item: #166 of 1656 id: ap-1279 author: Augustin, R.; Koleňák, R. title: Microstructure of the Transitional Area of the Connection of a High-temperature Ni-based Brazing Alloy and Stainless Steel AISI 321 (X6CrNiTi 18–10) date: 2010 words: 2702 flesch: 62 summary: It was also found that a slightly increased content of B in brazing alloy NI 102-01 in comparison to NI 102-02 caused better wetting of the surface of PM. For the same brazing parameters, brazing alloy NI 102-02 achieved deeper diffusion of the brazing al- loy into PM, whereas better penetration of PM into the brazing alloy occurred with brazing alloy NI 102- 01. keywords: alloy; brazing cache: ap-1279.pdf plain text: ap-1279.txt item: #167 of 1656 id: ap-1281 author: Ceres, D.; Jirout, T.; Rieger, F. title: Pitched Blade Turbine Efficiency at Particle Suspension date: 2010 words: 1357 flesch: 69 summary: This paper deals with effect relative impeller size and particle content on the efficiency of a pitched six-blade turbine at particle suspension. Keywords: Pitched blade turbine, particle suspension, agitator efficiency. keywords: particle; rieger; suspension cache: ap-1281.pdf plain text: ap-1281.txt item: #168 of 1656 id: ap-1283 author: Čech, I. title: A Model of Active Roll Vehicle Suspension date: 2010 words: 4892 flesch: 66 summary: From the inertia of the axle 0 = 2s2mw2(y 2 w/4 + tn · z2tw + tn · r2wx)· 2/yw · Zw2 from the unevennesses +ywkw2(Zw2 − Zk2) from the suspension −ycSbw2 from the lateral forces in the joint Sqb, Sqs +zqxw1/xw · (Sqb + Sqs) from the lateral motion of the axle −2tn · mw2(ztw − zq)(Ac − s2 · Yky2) from the weight of the displaced mass centre −2tn · mw2ztw · 2agZw2/yw from the weight of the body and seat to the displaced axle + 8(mb +ms)agzqZw2/yw · xw1/xw (3.8) Equation of lateral forces Lateral forces between the wheels and the road 0 = −2ky1Yky1 − 2ky2Yky2 inertia forces of the body and seat +Sqb + Sqs from solid axle roll +s2 · mw2 · ztw · 2/yw · (tn · Zw2 + nz · Zb) 18 Acta Polytechnica Vol. 50 − Zb, Zsb2 =Zs2 − Zb Dynamic-to-static ratio of lateral forces between wheels and road, front and rear Sy1/sst1 = ky1Yky1/sst1 , Sy2/sst2 = ky2Yky2/sst2 . keywords: axle; body; force; lateral; rear; roll; seat; suspension; vertical cache: ap-1283.pdf plain text: ap-1283.txt item: #169 of 1656 id: ap-1285 author: Ficker, T. title: Fractality of Fracture Surfaces date: 2010 words: 4446 flesch: 72 summary: Keywords: fractal dimension, fracture surfaces, porous materials, compressive strength. 2.1 Fractal porosity The large class of porous materials possesses at least one common feature, namely, they are composed of grains (particles, globules, etc.) of microscopic size l. The grains are usually arranged fractally with num- ber distribution N(l) and fractal dimension D N(l) keywords: fractal; fracture; strength cache: ap-1285.pdf plain text: ap-1285.txt item: #170 of 1656 id: ap-1287 author: Hassan, A. H.; Rahoma, U. A.; Sabry, M.; Fathy, A. M. title: Color Portion of Solar Radiation in the Partial Annular Solar Eclipse, October 3rd, 2005, at Helwan, Egypt date: 2010 words: 4904 flesch: 59 summary: Due to the decreasing fraction of direct radiation at shorter wavelengths, all three parame- ters showed much weaker cloud shading effects than global solar radiation. A study of the spectral composition of global solar radiation by interference metallic filters was carried out during the same previous eclipse in August 11th, 1999 in Helwan, Egypt [7]. keywords: color; diffuse; direct; eclipse; fig; infrared; radiation; variation cache: ap-1287.pdf plain text: ap-1287.txt item: #171 of 1656 id: ap-1289 author: Jirsa, J.; Žáček, J. title: UML-oriented Risk Analysis in Manufacturing Systems date: 2010 words: 3882 flesch: 65 summary: Keywords: risk analysis, Unified Modelling Language, manufacturing systems. For this we need risk analysis. keywords: analysis; diagram; fig; object; process; risk; risk analysis; uml cache: ap-1289.pdf plain text: ap-1289.txt item: #172 of 1656 id: ap-1291 author: Kopecký, M. title: Ensemble Empirical Mode Decomposition: Image Data Analysis with White-noise Reflection date: 2010 words: 4227 flesch: 69 summary: 4 A comparison between EMD methods and EEMD methods Fig. 2. decompose the data with added white noise into the IMFs; keywords: data; eemd; emd; fig; imfs; noise; signal; white cache: ap-1291.pdf plain text: ap-1291.txt item: #173 of 1656 id: ap-1293 author: Laurent, R.; Henriet, J.; Gschwind, R.; Makovicka, L. title: A Morphing Technique Applied to Lung Motions in Radiotherapy: Preliminary Results date: 2010 words: 5958 flesch: 63 summary: [44] Wolthaus, J. W., Schneider, C., Sonke, J. J., Van Herk, M., Belderbos, J. S. A., Rossi, M. M. G., Lebesque, J. V., Damen, E. M. F.: Mid- ventilation CT scan construction from four- dimensional respiration-correlated CT scans for radiotherapy planning of lung cancer patients. Int. [45] Wolthaus, J. W., Sonke, J. J., Van Herk, M., Damen, E. M.: Reconstruction of a time- averaged midposition CT scan for radiother- apy planning of lung cancer patients using de- formable registration. keywords: 4dct; image; lung; medical; morphing; motion; organ; patient; phase; voxels cache: ap-1293.pdf plain text: ap-1293.txt item: #174 of 1656 id: ap-1295 author: Nerádová, M.; Kovačócy, P. title: Welding of Aluminum Using a Pulsed Nd:YAG Laser date: 2010 words: 1852 flesch: 63 summary: Because of the possibility of assessing the impact of voltage-inspiring geometry, penetration welding was carried out at voltages 350 V and 375 V. Based on the measured dimensions influences of voltage energy, pulse duration and standoff distance on the weld ge- ometry were evaluated. Keywords: welding parameters, laser welding, aluminum, weldability of aluminum. keywords: aluminum; fig; laser; penetration; welding cache: ap-1295.pdf plain text: ap-1295.txt item: #175 of 1656 id: ap-1297 author: Provazník, M.; Koleňák, R. title: A Study of the Interface of Soldered Joints of SnInAgTi Active Solder with Ito Ceramics date: 2010 words: 1682 flesch: 63 summary: Keywords: ultrasonic activation, active solder, ITO (indium-tin oxide) ceramics. 3 Experiment results A differential thermic analysis was made on a sam- ple of active solder. keywords: ceramics; fig; ito; solder; soldering cache: ap-1297.pdf plain text: ap-1297.txt item: #176 of 1656 id: ap-1299 author: Sivkov, O. title: Practical Results of a Five-level Flying Capacitor Inverter date: 2010 words: 3745 flesch: 63 summary: 4 shows the simulation results from Simulink with output voltage Uout, output current Iout, and capacitor voltages Uc1, Uc2, Uc3. 4: Output voltage Uout, output current Iout and flying capacitor voltages Uc1, Uc2 and Uc3 of five-level FCMI with a resistive inductive load Fig. keywords: capacitor; current; fig; level; output; voltage cache: ap-1299.pdf plain text: ap-1299.txt item: #177 of 1656 id: ap-1301 author: Šimáně, Č. title: Non Mechanical (Mezic) Type Forces in the Foundations of Quantum Mechanics date: 2010 words: 3360 flesch: 56 summary: Then, the equations of motion can be explicitly written in the form[ μ d�v dt + μ d�u dt δV + (�v + �u) dμ dt δV+ μ (�v + �u) (δV ) dt + e m μ∇ϕδV − �uq ] mδV = 0 (8) The time derivative of δV in the fourth member of (8) must be treated as the sum of the derivatives at �v and �u constant μ(�v + �u) (δV ) dt = μ(�v + �u) [div�u(�v + �u) + div�v(�v + �u)] δV = μ�v div�vδV + μu div �uδV (9) μ d�v dt + �v [( ∂μ ∂t ) �u + div(μ�v) ] + e m μ∇ϕ+ μ d�u dt + �u [( ∂μ ∂t ) �v + div (μ�u) ] + �uq = 0 (11) Here again the partial time derivatives must be taken at �v and �u constant. keywords: equation; � u cache: ap-1301.pdf plain text: ap-1301.txt item: #178 of 1656 id: ap-1303 author: Zamarovský, P. title: Cosmos, Time and Creation (Remarks to the Philosophical, Theological and Physical Conceptions of Creation) date: 2010 words: 2385 flesch: 58 summary: Keywords: Big Bang, creation, cosmos, time scale, imaginary time, horizon, singularity. ap-6-10.dvi Acta Polytechnica Vol. 50 No. 6/2010 Cosmos, Time and Creation Remarks to the Philosophical, Theological and Physical Conceptions of Creation P. Zamarovský keywords: clocks; creation; god; scale; time cache: ap-1303.pdf plain text: ap-1303.txt item: #179 of 1656 id: ap-1305 author: Živčák, J.; Roško, M. title: How to Protect Patients Digital Images/Thermograms Stored on a Local Workstation date: 2010 words: 2883 flesch: 57 summary: Auditing fingerprint logon attempts generates security events, depending on whether the audit of successes or failures, or both (in our case we audited both), is enabled. [cit. 3–23–2010] http://www.ece.unh.edu/biometric/biomet/ public docs/Biometricsurveyfindings.pdf [6] Mullaney, J.: Biometric authentication a choice for banks. keywords: attempts; authentication; fingerprint; fraud; frr; logon; total; user cache: ap-1305.pdf plain text: ap-1305.txt item: #180 of 1656 id: ap-1306 author: Blažek, M.; Anisimova, E.; Páta, P. title: Application of Wavelet Transform for Image Denoising of Spatially and Time Variable Astronomical Imaging Systems date: 2011 words: 2274 flesch: 59 summary: For the third decomposition level, the influence of the denoising on the astronomical image was even nega- tive for several wavelets (e.g. most of the Daubechies and Reversed Biorthogonal wavelets) because of the strong artifacts of the transform (Figure 4). Only soft thresholding [9] was ap- plied, due to its better peak signal to noise ratio for image denoising, and no thresholding was done to 1http://www.mathworks.com/ 2http://iraf.noao.edu/ 12 Acta Polytechnica Vol. 51 keywords: image; noise; psf; transform; wavelet cache: ap-1306.pdf plain text: ap-1306.txt item: #181 of 1656 id: ap-1308 author: Castro-Tirado, A. J. title: Robotic Astronomy and the BOOTES Network of Robotic Telescopes date: 2011 words: 2466 flesch: 58 summary: 1: Distribution of robotic telescopes in the world 1following the consensus reached after one hour of discussion amongst the 80 participants who attended the “Workshop in Robotic Autonomous Observatories”, held in Málaga (Spain) on May 18–21, 2009. The BOOTES network of robotic telescopes 2.1 BOOTES-1 The first robotic astronomical observatory in Spain was placed in the INTA’s Estación de Sondeos At- mosféricos (ESAt) at the Centro de Experimentación de el Arenosillo in Mazagón (Moguer, Huelva). keywords: bootes; fig; filters; fov; station; telescope; transient cache: ap-1308.pdf plain text: ap-1308.txt item: #182 of 1656 id: ap-1310 author: Giovannelli, F.; Sabau-Graziati, L. title: X-ray Transient Sources (Multifrequency Laboratories) The Case of the Prototype A0535+26/HDE 245770 date: 2011 words: 6793 flesch: 67 summary: The shape and intensity of X-ray outbursts are dependent on the strength of the activity of the primary. Thus the passage of the neutron star at the periastron occurs with a periodicity of 110.856 ± 0.02 days and the different kinds of X-ray outbursts of A0535+26 — following the definitions reported in the review by Giovannelli & Sabau-Graziati (1992) — occur just after ∼ 8 days. keywords: days; et al; giovannelli; outbursts; ray; star; system cache: ap-1310.pdf plain text: ap-1310.txt item: #183 of 1656 id: ap-1312 author: Grinberg, V.; Kreykenbohm, I.; Fürst, F.; Wilms, J.; Pottschmidt, K.; Bel, M. Cadolle; Rodriguez, J.; Marcu, D. M.; Suchy, S.; Markowitz, A.; Nowak, M. A. title: Timing Analysis with INTEGRAL: Comparing Different Reconstruction Algorithms date: 2011 words: 2088 flesch: 59 summary: So while a better noise correction is re- quired, ii light lightcurves are still well suited for timing studies with a 10 s to 0.1 s resolu- tion in the regime above 20 keV. 4 Summary and Conclusions We have shown that it is possible to perform tim- ing studies with a resolution of up to 0.1 s with IN- TEGRAL when using the ii light tool. For higher time resolution, ii light produces meaningful results, although the overall variance of the lightcurves is not preserved. keywords: light; resolution; time cache: ap-1312.pdf plain text: ap-1312.txt item: #184 of 1656 id: ap-1314 author: Hudec, R.; Blažek, M.; Hudcová, V. title: Czech Participation in the INTEGRAL Satellite: A Review date: 2011 words: 2945 flesch: 65 summary: The results of the first 7 years of investigations of various scientific targets e.g. cataclysmic variables, blazars, X-ray sources, and GRBs with the ESA INTEGRAL satellite with Czech participation are briefly presented and discussed. Below we list a few examples of blazars analyzed with INTEGRAL observations. keywords: cvs; czech; ibis; integral; omc; optical; ray cache: ap-1314.pdf plain text: ap-1314.txt item: #185 of 1656 id: ap-1316 author: Hudec, R.; Pína, L.; Maršíková, V.; Inneman, A.; Skulinová, M.; Míka, M. title: Czech Participation in International X-Ray Observatory (IXO) date: 2011 words: 3971 flesch: 59 summary: Keywords: X-ray satellites, X-ray telescopes, X-ray optics. 1 Introduction The design and development of X-ray optics has a long tradition in the Czech Republic (e.g. Hudec et al., 1991, 1999, 2000, 2001, Inneman et al. 1999, 2000). keywords: czech; glass; ixo; optics; ray; technologies; wafers cache: ap-1316.pdf plain text: ap-1316.txt item: #186 of 1656 id: ap-1318 author: Hudec, R.; Hudec, L.; Klíma, M. title: Ultra Low-Dispersion Spectroscopy with Gaia and Photographic Objective Prism Surveys date: 2011 words: 2878 flesch: 56 summary: No. 2/2011 5 Conclusion Variability studies based on low-dispersion spectra are expected to provide unique novel data, and can use the algorithms recently developed for automatic analyses of digitized spectral Schmidt plates. The energy redistribution effect in the Gaia BP and RP spectra arising from contamina- tion by wings of the image profiles was mentioned and investigated by Straizys et al., 2006, Montegriffo et al., 2007, and Montegriffo, 2009. keywords: dispersion; gaia; plates; prism; spectra cache: ap-1318.pdf plain text: ap-1318.txt item: #187 of 1656 id: ap-1320 author: Hudec, R. title: The Puzzle of V407 Cygni date: 2011 words: 1613 flesch: 67 summary: Keywords: variable stars, Mira variables, symbiotic stars, gamma-rays, gamma-ray transients. 1: The historical light curve of V407 Cyg (Munari et al., 1990) Fig. 2: INTEGRAL IBIS observation of the V407 Cyg position (Bassani, 2010) shows the new transient to be located between two persistent hard X-ray sources, with no confirmation of the transient detection Fig. keywords: gamma; mira; ray; v407 cache: ap-1320.pdf plain text: ap-1320.txt item: #188 of 1656 id: ap-1322 author: Chernenko, A. title: On the Intrinsic Simplicity of Spectral Variability of GRBs date: 2011 words: 2767 flesch: 59 summary: This analysis allows us to identify time intervals where emission variability can be reduced to a single physical parameter and can therefore be robustly attributed to a single physical emitter. [1..N ], N being the total number of time intervals for a given GRB. keywords: correlation; eigenvalues; light; time; variability cache: ap-1322.pdf plain text: ap-1322.txt item: #189 of 1656 id: ap-1324 author: Kovács, A.; Bagoly, Z.; Balázs, L. G.; Horváth, I.; Veres, P. title: Cosmology with Gamma-Ray Bursts Using k-correction date: 2011 words: 1829 flesch: 71 summary: 1 Introduction Several papers present how to make k-corrections (e.g. [1]). The motivation of k-correction is related to the fact that the energy distribution measured with gamma-ray detectors placed on satellites is not equal to the energy that the burst released in its comoving system. keywords: amati; energy; vol cache: ap-1324.pdf plain text: ap-1324.txt item: #190 of 1656 id: ap-1326 author: Kreykenbohm, I.; Fürst, F.; Barrágan, L.; Wilms, J.; Rothschild, R. E.; Suchy, S.; Pottschmidt, K. title: 4U 1909+07: a Hidden Pearl date: 2011 words: 3547 flesch: 74 summary: To obtain the pulse profile at high energies between 20 keV and 40 keV, we used INTEGRAL data taken in 2004. Neither the photoelectric absorption nor the power law index Γ varies with pulse phase. keywords: data; energy; integral; kev; period; phase; pulse cache: ap-1326.pdf plain text: ap-1326.txt item: #191 of 1656 id: ap-1328 author: Lovisari, L.; Schindler, S.; Kapferer, W. title: XMM Observations of Metal Abundances in Galaxy Clusters date: 2011 words: 2177 flesch: 62 summary: Due to the large potential wells of galaxy clusters they retain all the enriched material. Because the gas transfer affects the evo- lution of galaxy and galaxy cluster, it is important to know when and how the enrichment takes place. keywords: cluster; galaxies; icm; metallicity cache: ap-1328.pdf plain text: ap-1328.txt item: #192 of 1656 id: ap-1330 author: Mészáros, A.; Řípa, J.; Balázs, L. G.; Bagoly, Z.; Veres, P.; Horváth, I. title: Cosmology and the Subgroups of Gamma-ray Bursts date: 2011 words: 930 flesch: 70 summary: I. Horváth Abstract Both short and intermediate gamma-ray bursts are distributed anisotropically in the sky (Mészáros, A. et al. ApJ, 539, 98 (2000), Vavrek, R. et al. MNRAS, 391, 1 741 (2008)). T90 is in seconds; for definitions of hardness, duration T90 and for more details see Horváth et al.: keywords: grbs cache: ap-1330.pdf plain text: ap-1330.txt item: #193 of 1656 id: ap-1332 author: Miškovičová, I.; Hanke, M.; Wilms, J.; Nowak, M. A.; Pottschmidt, K.; Schulz, N. S. title: Spectroscopy of the Stellar Wind in the Cygnus X-1 System date: 2011 words: 3431 flesch: 71 summary: The distribution of X-ray dips with or- bital phase peaks around phase 0.0 [1]. The distribution of X-ray dips with orbital phase in Cygnus X-1, MNRAS, 311, 2000, p. 861–868. keywords: absorption; phase; ray; wind; x-1 cache: ap-1332.pdf plain text: ap-1332.txt item: #194 of 1656 id: ap-1334 author: Řeřábek, M.; Páta, P. title: Advanced Processing of Images Obtained from Wide-field Astronomical Optical Systems date: 2011 words: 3711 flesch: 60 summary: An experiment for estimating the optical aber- rations of real optical systems was implemented. Optical aberrations models for linear space invariant and variant (LSI/LSV) systems are there- fore outlined in this paper. keywords: aberration; data; error; image; psf; system; wavefront cache: ap-1334.pdf plain text: ap-1334.txt item: #195 of 1656 id: ap-1336 author: Schindler, J.; Páta, P.; Klíma, M.; Fliegel, K. title: Astronomical Image Compression Techniques Based on ACC and KLT Coder date: 2011 words: 3295 flesch: 56 summary: Applying special compression algorithms based on specific properties of wavelet, fractal or Karhunen- Loève transform [9] seems to be a better solution for astronomical image data compression. Keywords: astronomical image compression, Karhunen-Loève transform, dark frame compression, loss less compression algorithm, Astronomical Context Coder (ACC), JPEG 2000. keywords: algorithms; coder; coding; compression; data; image; lossless; lossy; transform cache: ap-1336.pdf plain text: ap-1336.txt item: #196 of 1656 id: ap-1338 author: Sokołowski, M.; Należyty, M.; Majczyna, A.; Wawrzaszek, R.; Wajer, P. title: Searching for Space Debris Elements with the “Pi of the Sky” System date: 2011 words: 3010 flesch: 63 summary: RMS 4750 = 1800’’satR Night 20070526 MC Distance to closest satellite : night 20070526 and MC Fig. Keywords: space debris, robotic telescopes, satellite observations, satellite tracking, optical transients. keywords: debris; elements; objects; satellites; sky; space; system cache: ap-1338.pdf plain text: ap-1338.txt item: #197 of 1656 id: ap-1340 author: Vítek, S.; Fliegel, K.; Páta, P.; Koten, P. title: MAIA: Technical Development of a Novel System for Video Observations of Meteors date: 2011 words: 1524 flesch: 53 summary: Keywords: imaging systems, image processing, ethernet camera, image intensifier, system testing, astronomy, meteors. 1 Introduction Double station observation of meteors using two video systems coupled with image intensifiers started at the Ondřejov observatory about a decade ago[1]. keywords: camera; image; intensifier; lens; system cache: ap-1340.pdf plain text: ap-1340.txt item: #198 of 1656 id: ap-1342 author: Żarnecki, A. F.; Małek, K.; Sokołowski, M. title: Improving the Photometry of the Pi of the Sky System date: 2011 words: 2399 flesch: 54 summary: With a new calibration algorithm taking into account the spectral type of reference stars, the stability of the photometry algorithm can be significantly improved. This is an iteration procedure where stars from the list are matched against reference stars from the catalog (the TYCHO catalog is currently used). keywords: data; magnitudo; photometry; reference; sky; stars cache: ap-1342.pdf plain text: ap-1342.txt item: #199 of 1656 id: ap-1344 author: Ananikian, N.; Ananikyan, L.; Chakhmakhchyan, L.; Kocharian, A. title: Thermal Entanglement and Critical Behavior of Magnetic Properties on a Triangulated Kagomé Lattice date: 2011 words: 3699 flesch: 64 summary: Sa ki presents the Heisenberg spins and Sb ki the Ising spins The Hamiltonian can be written as follows: H = Jaa ∑ (i,j) Sa i S a j − Jab ∑ (k,l) (Sz)ak · (Sz)bl − H 2N 3∑ i=1 3[(Sz)aj + 1 2 (Sz)bj ], (1) where Sa = {Sa x, Sa y , Sa z } is the Heisenberg spin- 1 2 op- erator, and Sb is the Ising spin. keywords: entanglement; field; heisenberg; ising; properties; quantum cache: ap-1344.pdf plain text: ap-1344.txt item: #200 of 1656 id: ap-1346 author: Bellucci, S.; Krivonos, S.; Sutulin, A. title: N = 4, d = 1 Supersymmetric Hyper-Kähler Sigma Models and Non-Abelian Monopole Background date: 2011 words: 5845 flesch: 66 summary: In what follows, to make some expressions more transparent, we will use, sometimes, the following stereographic coordi- nates for the bosonic components of hypermultiplet (2.21) and tensor supermultiplet (2.14): q11 = e 1 2 (u−iφ)√ 1 + ΛΛ Λ, q21 = − e 1 2 (u−iφ)√ 1 + ΛΛ , q22 = ( q11 ) Indeed, from (2.17) and (2.23) one may get the fol- lowing expression for A: A = 1 f [ φ̇+ ∂ ∂va f(λσaλ̄)−Bav̇a ] , (3.6) where f = 1 |v| , and , B1 = − v2(v3 + |v|) (v21 + v22)|v| , B2 = v1(v3 + |v|) (v21 + v22)|v| , B3 = 0. (3.7) 16 Acta Polytechnica Vol. 51 No. 1/2011 keywords: action; auxiliary; mechanics; supermultiplet; supersymmetric cache: ap-1346.pdf plain text: ap-1346.txt item: #201 of 1656 id: ap-1348 author: Bellucci, S.; Krivonos, S.; Sutulin, A. title: Five-dimensional N = 4 Supersymmetric Mechanics date: 2011 words: 4348 flesch: 65 summary: Next, we introduce the standard Poisson brackets for bosonic fields {π,Λ} = 1, { π̄,Λ } (2.16) Performing a Routh transformation over the vari- ables (Λ,Λ, φ), we reduce the action (2.8) to S̃ = S − ∫ dt { π Λ̇ + π̄ Λ̇ + pφφ̇ } (2.17) and substitute the expressions (2.16) in S̃. At the final step, we have to choose the proper parametriza- tion for bosonic components qiα A (2.6), taking into account that they contain only five independent vari- ables. keywords: action; bosonic; reduction; su(2; supersymmetric cache: ap-1348.pdf plain text: ap-1348.txt item: #202 of 1656 id: ap-1350 author: Castro, O. Osuna; Wagner, E. title: Quantum Moment Map and Invariant Integration Theory on Quantum Spaces date: 2011 words: 2481 flesch: 67 summary: By an invariant integral we mean a positive linear functional h on X satisfying h(f � x) = ε(f)h(x), x ∈ X , f ∈ U . Then any *-representation π : X → L+(D) leads to a *-re- presentation π ◦ ρ : U → L+(D), and it follows easily from the Hopf algebra structure of U that adL(f)(X) := π(ρ(f(1)))X π(ρ(S(f(2)))), f ∈ U , X ∈ L+(D), (6) defines a left U-action on L+(D) turning it into a U- module *-algebra. keywords: quantum cache: ap-1350.pdf plain text: ap-1350.txt item: #203 of 1656 id: ap-1352 author: Dimakis, A.; Kanning, N.; Müller-Hoissen, F. title: Bidifferential Calculus, Matrix SIT and Sine-Gordon Equations date: 2011 words: 3375 flesch: 77 summary: 9 Solutions of the scalar (sharp line) SIT equations We rewrite p in (20), where now m = 1, as follows, p = p0 − tr ( (SK +KS)ΞKΞ (IM + (KΞ)2)−1 ) = p0 + tr ( (IM + (KΞ)2)x (IM + (KΞ)2)−1 ) = p0 + ( log det ( IM + (KΞ)2 )) Taking (11) into account, the Miura transformation reads q = −cx a−1 = −rx − r ax a−1 , qy = −r keywords: equation; matrix; solutions cache: ap-1352.pdf plain text: ap-1352.txt item: #204 of 1656 id: ap-1356 author: Lanczewski, T. title: The Velocity Tensor and the Momentum Tensor date: 2011 words: 2084 flesch: 75 summary: Keywords: relativistic classical mechanics, velocity tensor, momentum tensor. Then matrix (19) takes the form Π(β) = γ2 ( Π00 Π01 keywords: tensor cache: ap-1356.pdf plain text: ap-1356.txt item: #205 of 1656 id: ap-1358 author: Ferreira, L. A.; Kato, S.; Sawado, N.; Toda, K. title: Quantized Solitons in the Extended Skyrme-Faddeev Model date: 2011 words: 1846 flesch: 76 summary: We have found new Hopf soliton solutions for the extended Skyrme- Faddeev model. It is a (3 + 1)-dimensional Lorentz invari- ant field theory for a triplet of scalar fields �n, living on the two-sphere S2, �n2 = 1, and defined by the Lagrangian density L = M2 ∂μ�n · ∂μ�n− 1 e2 (∂μ�n ∧ ∂ν�n) 2 + (1) keywords: model; theory cache: ap-1358.pdf plain text: ap-1358.txt item: #206 of 1656 id: ap-1360 author: Fotopoulos, A.; Tsulaia, M. title: Current Exchanges for Reducible Higher Spin Modes on AdS date: 2011 words: 2259 flesch: 85 summary: References [1] Vasiliev, M. A.: Fortsch. Bekaert, X., Cnock- aert, S., Iazeolla, C., Vasiliev, M. A.: [arXiv:hep- th/0503128]. keywords: arxiv; hep; phys cache: ap-1360.pdf plain text: ap-1360.txt item: #207 of 1656 id: ap-1362 author: Palese, M.; Winterroth, E. title: Infinitesimal Algebraic Skeletons for a (2 + 1)-dimensional Toda Type System date: 2011 words: 3623 flesch: 69 summary: We observe that by the homomorphismX4 = X5 = 0 and X8 = νX3 we get a closed Lie algebra (which is different from the Lie algebra corresponding to the Euclidean group in the plane obtained above): It is easy to verify that on every integral submanifold defined by u = u(x, y, z), p = ux, q = uy, r = uz, with dx ∧ dy ∧ dz �= 0, the above ideal is equivalent to the Toda system under study. keywords: lie cache: ap-1362.pdf plain text: ap-1362.txt item: #208 of 1656 id: ap-1364 author: Poghosyan, V. S.; Priezzhev, V. B. title: The Problem of Predecessors on Spanning Trees date: 2011 words: 3032 flesch: 75 summary: Keywords: loop erased random walk, spanning trees, Kirchhoff theorem, Abelian sandpile model. In Section 2 we concentrate on a particular problem of probability P (1) when points i and j are nearest neighbors of the square lattice. keywords: lattice; phys cache: ap-1364.pdf plain text: ap-1364.txt item: #209 of 1656 id: ap-1370 author: Takasaki, K. title: Toda Tau Functions with Quantum Torus Symmetries date: 2011 words: 1488 flesch: 75 summary: G−1 − q−W0/2 · exp ( ∞∑ k=1 (−1)ktkJk ) qW0/2G−. Inserting this identity and using the fact that 〈s|G−1 − q−W0/2 = q−s(s+1)(2s+1)/12〈s|, q−W0/2G−1 + |s〉 = q−s(s+1)(2s+1)/12|s〉, we can rewrite Z(s, t) as Z(Q, s, t) = exp ( ∞∑ k=1 tkqk 1− qk ) · q−s(s+1)(2s+1)/6τ(s, T ,0), (13) Keywords: Toda hierarchy, melting crystal model, quantum torus algebra. keywords: function; tau; toda cache: ap-1370.pdf plain text: ap-1370.txt item: #210 of 1656 id: ap-1372 author: Catto, S.; Choun, Y. title: Supersymmetry in the Quark-Diquark and the Baryon-Meson Systems date: 2011 words: 2532 flesch: 74 summary: n!(nr − n − 1)!(n+ l + 12 ( 1 2 br2 )n × { 1 +mr nζ−n−1∑ k=0 (−1)k(n+ l)!(2n+ l + 1)(nζ − n− 1)!(n − 1 2 )! 2(k + n+ 12 )! = ( (nr − 1)!(2l + 2)!(nr + l − 1 2 )! keywords: color; representation cache: ap-1372.pdf plain text: ap-1372.txt item: #211 of 1656 id: ap-1374 author: Ficker, T.; Martišek, D.; Jennings, H. M. title: Surface Roughness and Porosity of Hydrated Cement Pastes date: 2011 words: 5384 flesch: 54 summary: [4] Lange, D. A., Jennings, H. M., Shah, S. P.: Rela- tionship between fracture surface roughness and fracture behavior of cement paste and mortar, J. Am. In our preliminary study [9], it was illustrated that, in addition to the roughness numbers RN , there are very promising surface parameters of another kind called the sur- face profile (SP ) and surface roughness (SR) pa- rameters derived from three-dimensional (3D) dig- ital replicas of fracture surfaces. keywords: cement; fracture; graphs; parameters; porosity; ratio; roughness; surface; water cache: ap-1374.pdf plain text: ap-1374.txt item: #212 of 1656 id: ap-1376 author: Ficker, T. title: Fracture Surfaces of Porous Materials date: 2011 words: 2223 flesch: 59 summary: [4] Lange, D. A., Jennings, H. M., Shah, S. P.: Rela- tionship between fracture surface roughness and fracture behavior of cement paste and mortar, J. Am. Keywords: roughness analysis, fracture surfaces, cement-based materials, confocal microscopy. keywords: cement; fracture; porosity; roughness; surfaces cache: ap-1376.pdf plain text: ap-1376.txt item: #213 of 1656 id: ap-1378 author: Hilar, M. title: 3D Modelling of a Tunnel Re-excavation in Soft Ground date: 2011 words: 3380 flesch: 57 summary: The model was prepared for analysing the conditions input into the 2D calcu- lations (location of geotechnical units, input param- eters, tunnel lining, etc.) No. 3/2011 Fig. 11: Tunnel construction under micropile umbrellas the horizontal jet grouting columns (to increase their stiffness), but like the jet grouting columns drilled into the face, this approach was finished after the third section. keywords: excavation; lining; pile; tunnel; walls cache: ap-1378.pdf plain text: ap-1378.txt item: #214 of 1656 id: ap-1380 author: Kutílek, P.; Hozman, J. title: Determining the Position of Head and Shoulders in Neurological Practice with the use of Cameras date: 2011 words: 3624 flesch: 57 summary: Head position was measured with precision of 0.5◦ in three planes (rotation-yaw, flexion-pitch and inclination-roll) [5], two cameras are required for determining head positions. keywords: axis; cameras; head; position; profile; rotation; system cache: ap-1380.pdf plain text: ap-1380.txt item: #215 of 1656 id: ap-1382 author: Litecká, J.; Fabianová, J.; Pavlenko, S. title: Relation between Cutting Surface Quality and Alloying Element Contents when Using a CO2 Laser date: 2011 words: 2705 flesch: 62 summary: The experimental results are shown in graphs which illustrate the suitability of materials for achieving required cutting surface quality parameters. No. 3/2011 3 Description of the experiment The following materials were chosen for an exper- iment to determine the quality characteristics of material cutting using a CO2 laser with different structures, i.e. with different alloys: S355J2C+N, QStE380TM and S2355JR. keywords: cutting; laser; material; parameters; quality; steel; surface cache: ap-1382.pdf plain text: ap-1382.txt item: #216 of 1656 id: ap-1384 author: Stefanovič, M.; Vrbová, M. title: Optimization of a Water Window Capillary Discharge Radiation Source date: 2011 words: 3354 flesch: 60 summary: Keywords: water window radiation, capillary discharge, soft X rays, nitrogen plasma. The role of capillary shielding In capillary discharge systems, the dielectric capillary is often surrounded by another metal in order to re- duce the overall inductance in the discharge circuit. keywords: capillary; discharge; gas; plasma; radiation; time cache: ap-1384.pdf plain text: ap-1384.txt item: #217 of 1656 id: ap-1386 author: Vaněček, D.; Jirsa, J. title: Electronic Education date: 2011 words: 4804 flesch: 62 summary: We will fo- cus on computer animations, which are discussed in greater detail in the second and third parts of this paper. DHTML itself is not very efficient for web animation purposes, because it only involves moving static pictures inside the win- dow area. keywords: animation; computer; education; internet; learning; students; systems; use; web cache: ap-1386.pdf plain text: ap-1386.txt item: #218 of 1656 id: ap-1388 author: Vaněček, D.; Jirsa, J. title: A Taxonomy of Technical Animation date: 2011 words: 1559 flesch: 50 summary: Our aim is to show the taxonomy of education animation. This article deals with computer animation in technical education. keywords: animation; fig; figure; process; student cache: ap-1388.pdf plain text: ap-1388.txt item: #219 of 1656 id: ap-1390 author: Vaněček, D.; Jirsa, J. title: Practical Implementation of Animation for Students of Pedagogical Studies at MIAS CTU in Prague date: 2011 words: 3012 flesch: 61 summary: Introduction The main goal of this paper is to present didactic aspects of producing computer animations for use in education, to categorize types of animations and pro- vide examples. Abstract This paper shows computer animation as a teaching and learning instrument in technical education. keywords: animation; flash; layers; students; symbols; type cache: ap-1390.pdf plain text: ap-1390.txt item: #220 of 1656 id: ap-1392 author: Amore, P.; Fernández, F. M. title: Rational Approximation to the Solutions of Two-Point Boundary Value Problems date: 2011 words: 3164 flesch: 79 summary: Keywords: nonlinear differential equations, Ginzburg-Landau, Wilson’s renormalization, Wegner-Houghton, Riccati equation, Padé-Hankel method. Table 4 shows Hankel sequences with d = 0 and d keywords: equation; −0.461 cache: ap-1392.pdf plain text: ap-1392.txt item: #221 of 1656 id: ap-1394 author: Brody, D. C.; Graefe, E. M. title: Coquaternionic Quantum Dynamics for Two-level Systems date: 2011 words: 4180 flesch: 66 summary: If a coquaternion q has the property that q̄q > 0 and that its imaginary part also has a positive norm so that q21 − q22 − q23 > 0, then q can be written in the form q = |q|eiqθq = |q|(cos θq + iq sin θq), (3) where iq = iq1 + jq2 + kq3√ q21 − q22 − q23 and θq − jq2 − kq3. keywords: dynamics; hamiltonian; quantum; space; state cache: ap-1394.pdf plain text: ap-1394.txt item: #222 of 1656 id: ap-1396 author: Jones, H. F. title: Perturbation Theory for PT-Symmetric Sinusoidal Optical Lattices at the Symmetry-Breaking Threshold date: 2011 words: 3057 flesch: 71 summary: 2 Band structure at threshold At the threshold λ = 1, the potential V in Eq. (2) be- comes the complex exponential V = V0 exp(2iπx/a), for which the Schrödinger equation is − ψ′′ − V0 exp(2iπx/a)ψ = βψ. 2: Characteristic behaviour of error functions whose arguments are (a) real or (b) have a large imaginary part. keywords: 4iz; functions cache: ap-1396.pdf plain text: ap-1396.txt item: #223 of 1656 id: ap-1398 author: Kalina, M. title: Two Remarks to Bifullness of Centers of Archimedean Atomic Lattice Effect Algebras date: 2011 words: 4691 flesch: 84 summary: and we are able to extend this state to the whole lattice effect algebra E. In [8] an atomic lattice effect algebra E (in fact, an atomic orthomodular lattice) with atomic center C(E) was constructed, where C(E) is not a bifull sublattice of E. In this paper we show that for atomic lattice effect algebras E (atomic orthomodular lattices) neither completeness (and atomicity) of C(E) nor σ-completeness of E are sufficient conditions for C(E) to be a bifull sublattice of E. Keywords: lattice effect algebra, orthomodular lattice, center, atom, bifullness. There are lattice effect algebras with no state. keywords: effect; lattice cache: ap-1398.pdf plain text: ap-1398.txt item: #224 of 1656 id: ap-1400 author: Kirillov, O. N. title: Singularities in Structural Optimization of the Ziegler Pendulum date: 2011 words: 6419 flesch: 58 summary: The proof of optimality in non-conservative optimization problems is a mathematical challenge related to multiple eigenvalues, singularities in the stability domain, and non-convexity of the merit functional. This phenomenon has been observed in many numerical studies of non-conservative optimization problems [4, 6, 7, 9, 10, 13, 14,17, 18] and was described analytically by Kirillov and Seyranian in [27, 28]. keywords: flutter; load; mass; optimization; pendulum; stability cache: ap-1400.pdf plain text: ap-1400.txt item: #225 of 1656 id: ap-1402 author: Kisil, V. V. title: Erlangen Programme at Large 3.2 Ladder Operators in Hypercomplex Mechanics date: 2011 words: 5985 flesch: 69 summary: Then there is an additional pair of hyperbolic ladder operators, which are identical (up to factors) to (26): L± j No. 4/2011 Table 1: The action of hyperbolic ladder operators on a 2D lattice of eigenspaces. keywords: group; ladder; mechanics; operators; representation cache: ap-1402.pdf plain text: ap-1402.txt item: #226 of 1656 id: ap-1404 author: Kotvytskiy, A. T.; Kruchkov, D. V. title: Dynamical Symmetry Breaking in RN Quantum Gravity date: 2011 words: 2843 flesch: 68 summary: Then,√ −g̃ � √ −g − hμνKμν − hμνhαβFμναβ � √ −g − hμνKμν + hμνhαβFμναβ 2 √−g − (24) (hμνKμν)2 8 √ −g3 . Then, for the scalar curvature we get R = gμνRμν � 1 2 ( ημν − hμν + hμρhν ρ ) × (13)( ∂α∂μhα ν − ∂α∂αhμν − ∂μ∂νh + ∂α∂νhα μ + O(h2) ) keywords: background; breaking; metric; quantum; symmetry cache: ap-1404.pdf plain text: ap-1404.txt item: #227 of 1656 id: ap-1406 author: Masáková, Z.; Pelantová, E. title: Ito-Sadahiro numbers vs. Parry numbers date: 2011 words: 4259 flesch: 78 summary: = (−x)m+1 p−1∑ i=0 (−x)i + ( (−x)p − 1 ) (x − β) · m∑ i=2 Ti−1(−x)m−i + (10) (x − β) p∑ i=1 Tm+i−1(−x)p−i −( (−x)p − 1 ) βT0(−x)m−1 + Tm − Tm+p . First realize that Tm − Tm+p = 0, since d−β(lβ) is eventually periodic with a preperiod of length m and a period of length p. We call such numbers β Ito-Sadahiro numbers, and we compare their properties with those of Parry numbers, which occur in the same context for the Rényi positive base numeration system. keywords: ito; number; sadahiro cache: ap-1406.pdf plain text: ap-1406.txt item: #228 of 1656 id: ap-1408 author: Paseka, J.; Janda, J. title: More on PT-Symmetry in (Generalized) Effect Algebras and Partial Groups date: 2011 words: 6681 flesch: 84 summary: We then have A + B = A + C. It follows again by (Gii) that C/D(A) is bounded and B/D(A) + y = y + x, keywords: d(a cache: ap-1408.pdf plain text: ap-1408.txt item: #229 of 1656 id: ap-1410 author: Riečanová, Z.; Zajac, M. title: Extensions of Effect Algebra Operations date: 2011 words: 4267 flesch: 80 summary: Our main goal is to study the prop- erties of sub-generalized effect algebras and effect al- gebras being intervals in V(H) if V(H) is equipped with two different partial sums such that one of them is an extension of the other. Keywords: generalized effect algebra, effect algebra, Hilbert space, densely defined linear operators, extension of operations. keywords: effect cache: ap-1410.pdf plain text: ap-1410.txt item: #230 of 1656 id: ap-1412 author: Riečanová, Z. title: Effect Algebras of Positive Self-adjoint Operators Densely Defined on Hilbert Spaces date: 2011 words: 3509 flesch: 75 summary: No. 4/2011 of operators A, B at least one is bounded and then A ⊕ B = A + B is the usual sum of operators in H. Then (F(H);⊕, 0) is a generalized effect algebra. Moreover, A⊕B (for A, B ∈ V(H)) and A ⊕S B (for A, B ∈ Sp(H)) coincide with the usual sum of operators A, B when at least one of them is bounded. keywords: effect cache: ap-1412.pdf plain text: ap-1412.txt item: #231 of 1656 id: ap-1414 author: Rivers, R. J. title: Path Integrals for (Complex) Classical and Quantum Mechanics date: 2011 words: 4786 flesch: 70 summary: For reasons that will rapidly become clear, we shall initially restrict ourselves to Hermitian Hamil- tonians, even though part of the original motivation for considering complex phase space was to accom- modate pseudo-Hermitian Hamiltonians which, by virtue of PT-symmetry, had real spectra. We now consider complex phase space, repeating the analysis of Smilga [18], taking the complex extension of the real phase-space as x → Z = x + iy, p keywords: complex; mechanics; phase; phys; quantum; space cache: ap-1414.pdf plain text: ap-1414.txt item: #232 of 1656 id: ap-1416 author: Shapiro, B.; Tater, M. title: Polynomial Solutions of the Heun Equation date: 2011 words: 2455 flesch: 71 summary: The thick black dots mark the roots of Q, the green dots mark the roots of Van Vleck polynomials. Figure 3 suggests that the asymptotic root distribution of Van Vleck polynomials has a more complicated structure than before. keywords: polynomials; roots; stieltjes; van cache: ap-1416.pdf plain text: ap-1416.txt item: #233 of 1656 id: ap-1418 author: Wunner, G.; Cartarius, H.; Koeberle, P.; Main, J.; Rau, S. title: Exceptional Points for Nonlinear Schroedinger Equations Describing Bose-Einstein Condensates of Ultracold Atomic Gases date: 2011 words: 4226 flesch: 59 summary: Typically, in these condensates the exceptional points are also found to be bifurcation points in parameter space. It can appear, e.g., for resonances in open systems, with complex energy eigenvalues. keywords: bifurcation; condensates; energy; equation; field; interaction; scattering cache: ap-1418.pdf plain text: ap-1418.txt item: #234 of 1656 id: ap-1420 author: Znojil, M. title: The Horizons of Observability in PT-symmetric Four-site Quantum Lattices date: 2011 words: 5877 flesch: 69 summary: = { (a, b, c) ∈ R3 |W (a, b, c) > 0 , (3) Q(a, b, c) > 0 , P (a, b, c) > 0 } where W (a, b, c) = ( 8 + c2 − a2 )2 − (4) 4 [ 16 − (a + c)2 ] b2 , Q(a, b, c) = [ (a + 3)(c − 1) − b2 ] · (5)[ (a − 3)(c + 1) − b2 ] and P (a, b, c) = 10 − a2 − 2 b2 − c2 . As long as the –3 –2 –1 0 1 2 3 c –3 –2 –1 0 1 2 3 a Fig. 4: The degenerate case of the simply connected rec- tangular domain D(H) at b = 0 –2 –1 0 1 2 b –3 –2 –1 0 1 2 3 a Fig. 5: The triply connected nature of the triple-overlap domain D(H) for the quantum lattice of Figure 2 at c = 0 (i.e., in the no-central-coupling extreme) 106 Acta Polytechnica Vol. 51 No. 4/2011 condition Q(a, b, 0) > 0 degenerates to the elemen- tary constraint 3 + b2 > a > −3 − b2 just the left and right small horizontal-parabolic seg- ments (with their extreme at b = 0 and |amax| = 3) should be cut out of the elliptic domain with P (a, b, 0) > 0 as inadmissible since Q(a, b, 0) < 0 there. keywords: domain; figure; vol cache: ap-1420.pdf plain text: ap-1420.txt item: #235 of 1656 id: ap-1422 author: Bartošek, J. title: A Pitch Detection Algorithm for Continuous Speech Signals Using Viterbi Traceback with Temporal Forgetting date: 2011 words: 3305 flesch: 68 summary: Secondly, temporal forgetting is applied in order to avoid penalizing pitch jumps after prosodic pauses of one speaker or changes in pitch connected with turn-taking in dialogs. Evaluation of pitch detection algorithms in adverse conditions. keywords: algorithm; difference; frequency; function; pitch; results; speech; time cache: ap-1422.pdf plain text: ap-1422.txt item: #236 of 1656 id: ap-1424 author: Brejcha, M. title: A Wideband Low-Pass Filter for Differential Mode Distortion date: 2011 words: 2104 flesch: 68 summary: Keywords: filter, filtering, low-pass, wideband, EMC, differential mode. Passive, Active and Digi- tal Filters. keywords: filter; frequency; section cache: ap-1424.pdf plain text: ap-1424.txt item: #237 of 1656 id: ap-1426 author: Brueser, Ch. title: Unobtrusive Non-Contact Detection of Arrhythmias using a “Smart” Bed date: 2011 words: 3516 flesch: 58 summary: Our work prepares the way for future research on fully automatic algorithms for detecting arrhyth- mias in BCG signals. [9, 10] as well as optical de- vices [11], BCG systems have been integrated into objects of daily life, such as beds [4–12], chairs keywords: arrhythmias; bcg; bed; ecg; heart; sensor; signal; study; system; vol cache: ap-1426.pdf plain text: ap-1426.txt item: #238 of 1656 id: ap-1428 author: Černý, V. title: Topology Control with Anisotropic and Sector Turning Antennas in Ad-hoc and Sensor Networks date: 2011 words: 4740 flesch: 58 summary: Keywords: ad-hoc network simulation, interference, antenna radiation patterns, mobile network simulation, Omnet++, topology control, interference, sector antennas, rotating antennas, wireless networks, anisotropic antennas, sensor net- works. 70◦ (0x), G1 = 2 dBi, G2 = 4 dBi, G3 = 8 dBi, G4 = 16 dBi, G5 = 20 dBi a) Exponential node chain and solution to have lower interference: introduction of auxiliary nodes b) Solution with sector antennas: no auxiliary nodes required, zero additional interference. keywords: antenna; distribution; interference; network; nodes; power; radiation; sector cache: ap-1428.pdf plain text: ap-1428.txt item: #239 of 1656 id: ap-1430 author: Drnek, K. title: Prague’s Water Supply Station in Podolí — a Solution for the Problems of Clean Water in the 1930s date: 2011 words: 3255 flesch: 74 summary: Water supply plant in Podoĺı and Antońın Engel. His answer to the growing needs for more water was to build dual water pipelines to Prague, and to build more water plants to collect more water. keywords: filters; plant; prague; water; water plant cache: ap-1430.pdf plain text: ap-1430.txt item: #240 of 1656 id: ap-1432 author: Faltin, P.; Chaisaowong, K. title: 3D Surface-based Detection of Pleural Thickenings date: 2011 words: 2914 flesch: 63 summary: To evaluate the results, we measure both the totally de- tected volume of all thickenings, and the number of detected thickenings, for each patient. It evolves from pleural thickenings which are a typical long-term effect of asbestos exposure. keywords: convex; hull; lung; thickenings cache: ap-1432.pdf plain text: ap-1432.txt item: #241 of 1656 id: ap-1434 author: Ficker, T. title: Surface Morphology of Porous Cementitious Materials Subjected to Fast Dynamic Fractures date: 2011 words: 1086 flesch: 52 summary: References [1] Ficker, T., Martǐsek, D., Jennings, H. M.: Rough- ness of fracture surfaces and compressive strength of hydrated cement pastes, Cem. Concr. Keywords: 3D profile analysis, fracture surfaces, cement-based materials, confocal microscopy. keywords: cement; fracture; surface cache: ap-1434.pdf plain text: ap-1434.txt item: #242 of 1656 id: ap-1436 author: Gruenwald, O. title: Introduction to Modeling of Buying Decisions date: 2011 words: 5147 flesch: 55 summary: Question C of requirement No. 9 — How satisfied are you with the spaces for parking? The first category of needs in the model comprises mandatory must-be requirements. keywords: customer; model; needs; product; requirements; respondents; satisfaction cache: ap-1436.pdf plain text: ap-1436.txt item: #243 of 1656 id: ap-1438 author: Hekrdla, M. title: Numerically Optimized Uniformly Most Powerful Alphabets for Hierarchical-Decode-and-Forward Two-Way Relaying date: 2011 words: 3258 flesch: 54 summary: [9] ||sk − sm||2 + |α|2||sl − sn||2− (4) 2|α| |〈sk − sm, sl − sn〉| ≥ |α|2δ2min, for k �= m, l �= n, k ⊕ l �= m ⊕ n and ∀α ∈ C, |α| ≤ 1. 3 Design of UMP Alphabets In contrast to [9], where UMP frequency-modulation alphabets have been designed, we face a problem of general UMP alphabet design with a natural unit mean symbol energy constraint, ε̄ = 1 Md Md−1∑ i=0 ||si||2. In contrast to Rayleigh fading, it is prefer- able to use UMP alphabets even at the price of lower δ2min in the Rician fading channel (here the Rician factor K = 10dB). keywords: alphabets; channel; network; optimization; ump; wireless cache: ap-1438.pdf plain text: ap-1438.txt item: #244 of 1656 id: ap-1440 author: Krejčí, R. title: PhpHMM Tool for Generating Speech Recogniser Source Codes Using Web Technologies date: 2011 words: 2628 flesch: 62 summary: About the author Robert Krejč́ı deals with digital signal processing and speech recognition focusing on optimisation of speech recogniser algorithms for systems with limited hardware resources. 2: Graphically expressed database structure for speech model 2.5 Selection of hardware platform We work on optimizing algorithms of speech recognis- ers for platforms of multi-core digital signal proces- sors of the TMS320C6000 family from Texas Instru- ments. keywords: code; data; optimisation; recogniser; speech; tool cache: ap-1440.pdf plain text: ap-1440.txt item: #245 of 1656 id: ap-1442 author: Kříž, R. title: Chaos in GDP date: 2011 words: 2655 flesch: 66 summary: Hurst exponent H is directly related to fractal di- mension D, because the maximum fractal dimension for a planar tracing is 2: D +H = 2 (8) 2.4 Correlation dimension Correlation dimension (DC) describes the dimension- ality of the underlying process in relation to its ge- ometrical reconstruction in phase space. [9] Alligood, T. K., Sauer, D. T., Yorke, J. A.: CHAOS an introduction to dynamical systems. keywords: exponent; gdp; phase; space; system; time cache: ap-1442.pdf plain text: ap-1442.txt item: #246 of 1656 id: ap-1444 author: Kunkemoeller, M.; Dietrich, P.; Pollow, M. title: Synthesis of Room Impulse Responses for Variable Source Characteristics date: 2011 words: 3332 flesch: 55 summary: This motivates a measurement method that is capable of obtaining room impulse responses for these specific radiation patterns by using a superposition approach of several measurements with technically well-defined sound sources. Keywords: spherical harmonics, adjustable source directivity, room impulse response, linear room acoustics. keywords: array; loudspeaker; measurement; method; radiation; responses; room; synthesis cache: ap-1444.pdf plain text: ap-1444.txt item: #247 of 1656 id: ap-1446 author: Obreja, R.; Edu, I. R. title: Limited Angle Torque Motors Having High Torque Density, Used in Accurate Drive Systems date: 2011 words: 2358 flesch: 65 summary: Keywords: limited angle torque motor, finite element method, high performance, pancake, direct drive. A limited angle torque motor with a large air-gap In the situation of torque motors with a large air-gap, it is found that the magnetic field generates only the 4 main poles very accurately, because the field lines may not close in the neutral area of the poles directly between the magnets and the soft magnetic material of the rotor, due the dimensions of the air-gap. keywords: density; diagram; fig; flux cache: ap-1446.pdf plain text: ap-1446.txt item: #248 of 1656 id: ap-1448 author: Petrák, V.; Krucký, J.; Vlčková, M. title: Boron Doped Nanocrystalline Diamond Films for Biosensing Applications date: 2011 words: 3106 flesch: 57 summary: Elec- trochemical Impedance Spectroscopy (EIS) was used to study in situ changes related to lipid membrane formation and disruption by peptide-induced interactions. In past decades, lipid membranes on a solid substrate have attracted considerable inter- est, from the point of view of both fundamental and applied science. keywords: diamond; disruption; impedance; lipid; membrane; ncd; surface cache: ap-1448.pdf plain text: ap-1448.txt item: #249 of 1656 id: ap-1450 author: Petráková, V. title: Optical Detection of Charged Biomolecules: Towards Novel Drug Delivery Systems date: 2011 words: 2644 flesch: 57 summary: When comparing the effects observed on fluori- nated ND with the effects on oxidized ND, we find that the effect is much stronger for fluorinated ND. In our work, we study how surface modification of ND can change the color of ND luminescence (PL). keywords: luminescence; molecules; polymers; surface; vol cache: ap-1450.pdf plain text: ap-1450.txt item: #250 of 1656 id: ap-1452 author: Safan, M. A. title: Performance of Beams Made of Low-cost Self-compacting Concrete in an Aggressive Environment date: 2011 words: 6393 flesch: 62 summary: Ductility index and ultimate loads recorded for test beams control beams beams in a corrosive environment beam ultimate load, deflection, mm ductility beam ultimate load, deflection, mm ductility kN Δy b Δu b index kN Δy b Δu b index B1 59.6 (1.00)a 2.66 18.58 7.0 B1C 55.0 (0.92) 3.59 10.38 2.9 B2 53.1 (0.89) 3.14 9.98 3.2 B2C 50.4 (0.85) 3.21 7.12 2.2 B3 52.0 (0.87) 3.17 7.17 2.3 B3C 48.7 (0.82) 3.55 7.05 2.0 B4 54.8 (0.92) 3.00 13.8 4.6 B4C 52.3 (0.89) 2.88 9.70 3.4 B5 52.2 (0.88) 2.95 15.00 5.1 B5C 49.1 (0.82) 3.03 8.96 3.0 B6 53.0 (0.89) 2.75 17.00 6.2 B6C 51.7 (0.87) 3.94 8.54 2.2 B7 50.8 (0.85) 2.77 15.05 5.4 B7C 49.3 (0.83) 3.86 8.9 2.3 a ( ) : ultimate load as a fraction of the ultimate load of the control beam (B1) b Δy,Δu: mid-span deflection at yield and ultimate load, respectively (a) beams in Corrosive environment (b) control beams Fig. 7: 3 Experimental study The experimental work included the manufacture of two sets of test beams. keywords: ash; beams; cement; concrete; corrosion; fly; fume; load; mixes; scc; silica; test cache: ap-1452.pdf plain text: ap-1452.txt item: #251 of 1656 id: ap-1454 author: Schlebusch, T. title: Unobtrusive Health Screening on an Intelligent Toilet Seat date: 2011 words: 3373 flesch: 56 summary: Keywords: monitoring of vital parameters, personal healthcare, ambient assisted living, electrocardiogram, bioimpe- dance, toilet seat. 6: Comparison of toilet seat ECG with conventional lead 1 a) typical male b) typical female Fig. 7: Weight distribution on a toilet seat 4.2 ECG measurement An example of an ECG measurement is shown in Fi- gure 6. keywords: bis; body; ecg; electrodes; measurement; seat; toilet; toilet seat; vol cache: ap-1454.pdf plain text: ap-1454.txt item: #252 of 1656 id: ap-1456 author: Schommartz, A.; Eilebrecht, B.; Wartzek, T.; Walter, M.; Leonhardt, S. title: Advances in Modern Capacitive ECG Systems for Continuous Cardiovascular Monitoring date: 2011 words: 3299 flesch: 57 summary: [10] Aleksandrowicz, A., Leonhardt, S.: Wireless and non-contact ECG measurement system — the Aachen SmartChair. This principle can also achieve interference reduction in capacitive ECG measurements. keywords: aachen; cecg; ecg; electrodes; engineering; germany; measurements; system; vol cache: ap-1456.pdf plain text: ap-1456.txt item: #253 of 1656 id: ap-1458 author: Ulbrich, M.; Schauermann, A.; Leonhardt, S. title: The Influence of Heart and Lung Dynamics on the Impedance Cardiogram — A Simulative Analysis date: 2011 words: 2615 flesch: 53 summary: 4: Simulation model and current density results All simulations have been calculated on a per- sonal computer with a 64 bit operating system, an IntelR©XeonR© 5 240 processor with 2 cores and 24 GB RAM. Another pos- sible reason for this is that processes in the human body during ICG measurements are widely unknown. keywords: heart; icg; impedance; lung; model; signal; vol cache: ap-1458.pdf plain text: ap-1458.txt item: #254 of 1656 id: ap-1460 author: Vecka, J. title: Impacts of New EU and Czech Environmental Legislation on Heat and Electricity Prices of Combined Heat and Power Sources in the Czech Republic date: 2011 words: 4255 flesch: 58 summary: Table 2: Pollution fees — current and proposed in CZK per ton Pollutant Dust SOx NOx VOC Current 3 000 1 000 800 2 000 2012–2016 4 200 1 350 1 100 2 700 2017 6 300 2 100 1 700 4 200 2018 8 400 2 800 2 200 5 600 2019 10 500 3 500 2 800 7 000 2020 12 600 4 200 3 300 8 400 2021 14 700 4 900 3 900 9 800 2022 and further 29 400 9 800 7 800 19 600 3 Future of heat prices in the Czech Republic after 2012 In the respect of emission trading, I have focused on the third exception (free allocation of allowances for district heating), which is crucial for my eco- nomic model. In the case of heat prices, there will be no direct impact on costs or revenues for these com- panies because of the heat price structure (regulated by the Energy Regulatory Office). keywords: allocation; directive; emission; free; heat; new; price cache: ap-1460.pdf plain text: ap-1460.txt item: #255 of 1656 id: ap-1462 author: Anisimova, E.; Páta, P.; Blažek, M. title: Stellar Object Detection Using the Wavelet Transform date: 2011 words: 1770 flesch: 62 summary: Keywords: stellar object detection, wavelet transform. • Subtracting S1 of S0, we get wavelet coefficients for the first decomposition level corresponding to the smallest details W1 = S0 − S1. keywords: catalog; image; transform; wavelet cache: ap-1462.pdf plain text: ap-1462.txt item: #256 of 1656 id: ap-1464 author: Gális, R.; Hric, L.; Kundra, E.; Münz, F. title: Cataclysmic Variables — X-rays and Optical Activity in V1223 Sgr and V709 Cas date: 2011 words: 2545 flesch: 69 summary: Typically, soft X-ray modulations were observed in the orbital period, in spin period of WD, or a beat between the two in IPs. 2.1 Intermediate polar V1223 Sgr IP V1223Sgr is a bright X-ray source (4U 1849-31) with possible X-ray flare activity. keywords: band; data; integral; ips; kev; ray cache: ap-1464.pdf plain text: ap-1464.txt item: #257 of 1656 id: ap-1466 author: Hölzl, J.; Wilms, J.; Kreykenbohm, I.; Schmid, Ch.; Grossberger, Ch.; Wille, M.; Eikmann, W.; Brand, T. title: Observing Galaxy Clusters with eROSITA: Simulations date: 2011 words: 1393 flesch: 69 summary: A main objective of the survey is to observe galaxy clusters in order to constrain cosmological parameters and to obtain further knowledge about dark matter and dark energy. For the simulation of the eROSITA survey we present a Monte-Carlo code generating a mock catalogue of galaxy clusters distributed according to the mass function of [1]. keywords: clusters; function; galaxy; mass; redshift; simulation cache: ap-1466.pdf plain text: ap-1466.txt item: #258 of 1656 id: ap-1468 author: Hudec, R.; Blažek, M.; Hudcová, V. title: Czech Participation in INTEGRAL: 1996–2011 date: 2011 words: 5195 flesch: 60 summary: In this paper, we deal with examples of observa- tions and analyses of INTEGRAL data with Czech participation, focusing on two categories of objects, namely cataclysmic variables (CVs) and blazars. In addition, we have worked on transferring ISDC s/w packages, further development of tools for effec- tive and interactive scientific analyses and the use of INTEGRAL data, further improving the quality of astrometry and photometry, and on operating the second (local) ISDC center/office (Ondrejov Integral Data Center, OIDC) at the Ondrejov Astronomical Institute, enabling the astronomical community in the Czech Republic and in Central and East Europe to participate in scientific activities related to IN- TEGRAL, data evaluation, data archiving, and in- terpretation. keywords: cvs; czech; data; ibis; integral; isdc; objects; omc; optical; ray; rts2 cache: ap-1468.pdf plain text: ap-1468.txt item: #259 of 1656 id: ap-1470 author: Hudec, R.; Pína, L.; Maršíková, V.; Inneman, A.; Skulinová, M.; Míka, M. title: Czech Contribution to Athena date: 2011 words: 4006 flesch: 60 summary: 1 Introduction Design and development of X-ray optics have a long tradition in the Czech Republic (e.g. Hudec et al., 1991, 1999, 2000, 2001, Inneman et al. 1999, 2000). However, the application of this technology in X-ray optics is re- lated to the need to improve accuracy significantly and minimize errors. keywords: athena; czech; glass; optics; ray; wafers cache: ap-1470.pdf plain text: ap-1470.txt item: #260 of 1656 id: ap-1472 author: Lewandowska, N.; Elsäesser, D.; Mannheim, K. title: Search for a Correlation Between Radio Giant Pulses and VHE Photons of the Crab Pulsar date: 2011 words: 2134 flesch: 67 summary: Currently, no universal model is available for Crab radio GPs, since the Lyutikov model is only applicable to GIPs above 4 GHz, where the P2 com- ponent changes in its position by 10 degrees [1]. Within the framework of this report we give a review on radio GPs and present a new idea on how to examine the characteristics of this as yet not understood kind of pulsar emission. keywords: gps; pulsar; radio; vol cache: ap-1472.pdf plain text: ap-1472.txt item: #261 of 1656 id: ap-1474 author: Litzinger, E.; Pottschmidt, K.; Wilms, J.; Suchy, S.; Rothschild, R. E.; Kreykenbohm, I. title: Monitoring PSR B1509–58 with RXTE: Spectral analysis 1996–2010 date: 2011 words: 1586 flesch: 72 summary: Spectral analysis 1996–2010 E. Litzinger, K. Pottschmidt, J. Wilms, S. Suchy, R. E. Rothschild, I. Kreykenbohm Abstract We present an analysis of the X-ray spectra of the young, Crab-like pulsar PSR B1509–58 (pulse period P ∼ 151ms) observed by RXTE over 14 years since the beginning of the mission in 1996. Keywords: pulsars: individual (PSR B1509–58) — stars: neutron — X-rays: stars. keywords: epoch; kev; phase; pulse; spectra cache: ap-1474.pdf plain text: ap-1474.txt item: #262 of 1656 id: ap-1476 author: Meddi, F.; Ambrosino, F.; Rossi, C.; Nesci, R.; Sclavi, S.; Ruggieri, A.; Sestito, S.; Bruni, I.; Gualandi, R. title: A New Fast Silicon Photomultiplier Photometer date: 2011 words: 1580 flesch: 59 summary: 5: Power Spectra of the Crab Pulsar signal detected by MPPC0 (upper) and P3E0 (lower) Fig. 6: Crab Pulsar light curves folded by “efold” for MPPC0 (upper) and P3E0 (lower) 3 Observational test: the Crab Pulsar On February 5, 2011 we observed the Crab Pulsar for 3 300 seconds with 0.55 ms (P3E0) and 1 ms (MPPC0) sampling in good photometric conditions (seeing ∼ 1.5 arcsec). keywords: crab; data; pulsar; signal; telescope cache: ap-1476.pdf plain text: ap-1476.txt item: #263 of 1656 id: ap-1478 author: Mészáros, A.; Řípa, J.; Ryde, F. title: A Crazy Question: Can Apparently Brighter Gamma-ray Bursts Be Farther Away? date: 2011 words: 1829 flesch: 74 summary: The relationship shows that apparently fainter bursts need not, in general, lie at larger redshifts. It is a standard cosmological behaviour that for small z’s (z � 0.1) dl(z) ∝ z, and for large redshifts lim z→∞ dl(z) 1 + z = finite positive number for any Ho, ΩM , ΩΛ keywords: grbs; redshifts cache: ap-1478.pdf plain text: ap-1478.txt item: #264 of 1656 id: ap-1480 author: Obst, M.; Pottschmidt, K.; Lohfink, A.; Wilms, J.; Böck, M.; Smith, D. M.; Tomsick, J. A.; Kreykenbohm, I. title: GRS 1758–258: RXTE Monitoring of a Rare Persistent Hard State Black Hole date: 2011 words: 1732 flesch: 70 summary: [10] Reid, M. J., McClintock, J. E., Narayan, R., et al.: 2011, arXiv:1106.3688. Typical hard state fluxes after taking into account the Galactic ridge emission are 0.2–0.4 keV s−1 cm−2. keywords: black; rxte; state cache: ap-1480.pdf plain text: ap-1480.txt item: #265 of 1656 id: ap-1482 author: Páta, P. title: Influence of the Lossy Compression JPEG2000 standard on the Deformation of PSF date: 2011 words: 1297 flesch: 56 summary: Image compression based on the wavelet transform is nowadays very popular because of its nice properties. Keywords: Astronomical lossy image compression, PSF deformation, Astronomical Context Coder (ACC), JPEG 2000. keywords: compression; function; image; system cache: ap-1482.pdf plain text: ap-1482.txt item: #266 of 1656 id: ap-1484 author: Piotrowski, L. W.; Zarnecki, A. F. title: Analysis and Simulation of the Pi of the Sky Detector Response date: 2011 words: 1847 flesch: 60 summary: 5: Left: Comparison of the position determination accuracy from polynomial model profile astrometry and from ASAS aperture astrometry, for stars brighter than 9m; Right: 2 Laboratory measurements and modelling The derivation of a PSF requires a star profile with sub-pixel resolution, which can be obtained from a superposition of single star images. keywords: frame; model; pixel; psf; sky cache: ap-1484.pdf plain text: ap-1484.txt item: #267 of 1656 id: ap-1486 author: Roháč, J.; Řeřábek, M.; Hudec, R. title: Multi-functional star tracker — future perspectives date: 2011 words: 1712 flesch: 53 summary: Various attitude reference sources can be used for obtaining attitude information, e.g. Earth horizon sensors, which can be directed towards the Sun, Moon, or other planets and stars, Sun sensors, magnetometers, and star trackers (STs). They provide very precise information about the attitude in space according to consecutive evaluation of star positions. keywords: attitude; fov; image; star; systems; wfst cache: ap-1486.pdf plain text: ap-1486.txt item: #268 of 1656 id: ap-1488 author: Siudek, M.; Batsch, T.; Castro-Tirado, A. J.; Czyrkowski, H.; Cwiok, M.; Dabrowski, R.; Jelínek, M.; Kasprowicz, G.; Majcher, A.; Majczyna, A.; Malek, K.; Mankiewicz, L.; Nawrocki, K.; Opiela, R.; Piotrowski, L. W.; Sokolowski, M.; Wawrzaszek, R.; Wrochna, G.; Zaremba, M. title: Pi of the Sky Telescopes in Spain and Chile date: 2011 words: 1898 flesch: 60 summary: The prototype is equipped with two custom-designed 442A 2 048 × 2 048 CCD cameras equipped with Canon telephoto lenses with focal length f = 85 cm, f/d = 1.2 and covering a 20◦×20◦ field of view. 4: Mount design with 2 CCD cameras (prototype in Chile)(left) and for 4 CCD cameras (new detector unit in Spain) keywords: cameras; detector; prototype; sky; system; warsaw cache: ap-1488.pdf plain text: ap-1488.txt item: #269 of 1656 id: ap-1490 author: Siudek, M.; Malek, K.; Mankiewicz, L.; Opiela, R.; Sokolowski, M.; Zarnecki, A. F. title: Photometric Analysis of the Pi of the Sky Data date: 2011 words: 1757 flesch: 56 summary: No. 6/2011 Photometric Analysis of the Pi of the Sky Data M. Siudek, K. Malek, L. Mankiewicz, R. Opiela, M. Sokolowski, A. F. Żarnecki Abstract A database containing star measurements from the period 2006–2009 taken by the Pi of the Sky detector located in Las Campanas Observatory in Chile contains more than 2 billion measurements of almost 17 million objects. 1: Precision dispersion of star brightness measurements from standard photometry for 200s exposures (20 coad- ded frames) from the Pi of the Sky prototype at the Las Campanas Observatory in Chile. keywords: measurements; photometry; sky; stars cache: ap-1490.pdf plain text: ap-1490.txt item: #270 of 1656 id: ap-1492 author: Švéda, L.; Landováa, M.; Míka, M.; Pína, L.; Havlíková, R.; Maršíková, V. title: Thermal Forming of Glass — Experiment vs. Simulation date: 2011 words: 2191 flesch: 62 summary: [3] Chen, Y.: Thermal forming process for precision freeform optical mirrors and micro glass optics, PhD thesis, The Ohio State University, 2010. Independent temperature measurements in- side the furnace for greater precision will be per- formed. keywords: data; forming; glass; process; temperature cache: ap-1492.pdf plain text: ap-1492.txt item: #271 of 1656 id: ap-1494 author: Valtonen, M.; Sillanpää, A. title: 2005–2010 Multiwavelength Campaing of OJ287 date: 2011 words: 5872 flesch: 73 summary: [8] Valtonen, M. J.: Workshop on Two Years of In- tensive Monitoring of OJ 287 and 3C66A, Pro- ceedings of the meeting held in Oxford. [9] Lehto, H. J., Valtonen, M. J.: Astrophys. keywords: astrophys; binary; jet; model; oj287; outburst; ref; valtonen cache: ap-1494.pdf plain text: ap-1494.txt item: #272 of 1656 id: ap-1496 author: Bagoly, Z.; Veres, P.; Horváth, I.; Mészáros, A.; Balázs, L. G. title: On the Relation Between GRB Classes and X-ray Flashes date: 2012 words: 2124 flesch: 64 summary: The observational properties show that intermediate bursts are the softest among the three groups, meaning that their emission is concentrated to low-energy bands. The model has the following three components with equal stan- 1http://cran.r-project.org 7 Acta Polytechnica Vol. 52 No. 1/2012 Table 1: Bivariate model parameters for the best-fitted (EEI) model. keywords: bursts; duration; flashes; model; ray cache: ap-1496.pdf plain text: ap-1496.txt item: #273 of 1656 id: ap-1498 author: Giovannelli, F.; Sabau-Graziati, L. title: The Intriguing Nature of the Cataclysmic Variable SS Cygni date: 2012 words: 4790 flesch: 69 summary: Martinez-Pais et al. also determined that the optical companion of SS Cyg system is a K2–K3 late-type star. However, they cannot fit SS Cyg data by a simple model as white dwarf plus accretion disk. keywords: cvs; cyg; dwarf; et al; giovannelli; ss cyg; white cache: ap-1498.pdf plain text: ap-1498.txt item: #274 of 1656 id: ap-1500 author: Grossberger, C.; Kadler, M.; Wilms, J.; Müller, C.; Beuchert, T.; Ros, E.; Ojha, R.; Aller, M.; Aller, H.; Angelakis, E.; Fuhrmann, L.; Nestoras, I.; Schmidt, R.; Zensus, J. A.; Krichbaum, T. P.; Ungerechts, H.; Sievers, A.; Riquelme, D. title: Structural Variability of 3C 111 on Parsec Scales date: 2012 words: 2530 flesch: 67 summary: 4 Summary In this paper, the ejection of new jet components on parsec scales were associated with a major flux density outburst of 3C 111 in 2007. It was shown that the major flux density outburst can be asso- ciated with the ejection of a primary jet component and secondary component. keywords: component; density; flux; outburst; radio cache: ap-1500.pdf plain text: ap-1500.txt item: #275 of 1656 id: ap-1502 author: Hudec, R.; Kopel, F.; Krapp, P.; Heber, U.; Cayé, W. title: The Optical Transient Search in the Bamberg Southern Sky Survey: Preliminary Results date: 2012 words: 1910 flesch: 57 summary: The cluster of sky patrol photographic cameras operated in the Boyden Observatory, South Africa, by the Bamberg Observatory. Here we report on an extended study based on blink-comparison of 5004 Bamberg Observatory Southern Sky Patrol Plates performed within a student high school project (Jugend Forscht). keywords: bamberg; observatory; patrol; plates; sky cache: ap-1502.pdf plain text: ap-1502.txt item: #276 of 1656 id: ap-1504 author: Hudec, R.; Hudec, L.; Klíma, M. title: Ultra Low Dispersion Spectroscopy with Gaia and Astronomical Slitless Surveys date: 2012 words: 3705 flesch: 58 summary: The motivation for studies comparing these two databases is as follows: (1) A comparison of the sim- ulated Gaia BP/RP images with those obtained from digitized Schmidt spectral plates (both using disper- sive elements) for 8 selected test fields, and (2) A fea- sibility study for application for the algorithms devel- oped for the plates for Gaia. Variability studies based on low dispersion spec- tra are expected to provide unique novel data, and can use the algorithms recently developed for auto- matic analyses of digitized spectral Schmidt plates. keywords: data; dispersion; gaia; lds; plates; prism; spectra cache: ap-1504.pdf plain text: ap-1504.txt item: #277 of 1656 id: ap-1506 author: Jelínek, M.; Gorosabel, J.; Castro-Tirado, A. J.; Postigo, A. de Ugarte; Guziy, S.; Cunniffe, R.; Kubánek, P.; Prouza, M.; Vítek, S.; Hudec, R.; Reglero, V.; Sabau-Graziati, L. title: BOOTES Observation of GRB 080603B date: 2012 words: 2599 flesch: 75 summary: 5 Conclusions The 0.6 m telescope BOOTES-2 in La Mayora ob- served the optical afterglow of GRB 080603B in three filters. References [1] Chandra, P., Frail, D. A.: GRB 080603B: PAIRITEL infrared detection. keywords: 080603b; b-2; gcn; grb; jun cache: ap-1506.pdf plain text: ap-1506.txt item: #278 of 1656 id: ap-1508 author: Nesci, R.; Maselli, A.; Montagni, F.; Sclavi, S. title: S5 1803+78 Revisited date: 2012 words: 2369 flesch: 73 summary: Many BL Lacs are X-ray sources and are a substantial part of the extragalactic sources detected in γ rays. The cor- relation between γ-ray and optical flares is based on two cases only: further observations are necessary to explore this topic, but a one-zone synchrotron self Compton model seems too simple to explain the be- havior of this source. keywords: ray; source cache: ap-1508.pdf plain text: ap-1508.txt item: #279 of 1656 id: ap-1510 author: Szécsi, D.; Bagoly, Z.; Horváth, I.; Balázs, L. G.; Veres, P.; Mészáros, A. title: GRB Duration Distribution Considering the Position of the Fermi date: 2012 words: 1463 flesch: 68 summary: However, we can announce that we have succesfully created a method that is able to separate the Fermi data from the motion-based background in such an effective way that statistical analyses can be made using the data. 3: After background fitting: the lightcurve of Fermi- burst 091030613 measured by the 3rd GBM detector. keywords: background; fermi; figure cache: ap-1510.pdf plain text: ap-1510.txt item: #280 of 1656 id: ap-1512 author: Kapilan, N. title: Production of Biodiesel from Vegetable Oil Using Microware Irradiation date: 2012 words: 2935 flesch: 60 summary: The fuel property analysis shows that the properties of jatropha oil biodiesel satisfy the biodiesel standards, and are close to the fossil diesel standards. No. 1/2012 [19] Jain, S., Sharma, M. P.: Biodiesel pro- duction from Jatropha curcas oil, Renewable and Sustainable Energy Reviews, 14, 9, 2010, 3 140–3 147. keywords: biodiesel; energy; fuel; irradiation; jatropha; microwave; oil; production; transesterification cache: ap-1512.pdf plain text: ap-1512.txt item: #281 of 1656 id: ap-1514 author: Kutilek, P.; Viteckova, S. title: Prediction of Lower Extremity Movement by Cyclograms date: 2012 words: 5752 flesch: 57 summary: For a study of gait we have used new methods based on an analysis of gait angles using cyclograms (also called angle-angle diagrams or cyclokinograms) and artificial intelligence to predict human motion of legs/prostheses. The creation of cyclograms is based on gait angles that are objective, reliable and well suited for statistical study [14]. keywords: angle; area; cyclogram; data; gait; human; joint; knee; network; neural; use; vol cache: ap-1514.pdf plain text: ap-1514.txt item: #282 of 1656 id: ap-1516 author: Sláma, J. title: Plasma Flow and Temperature in a Gliding Reactor with Different Electrode Configurations date: 2012 words: 2024 flesch: 57 summary: Keywords: gliding discharge, spectra, shape of electrodes, plasma reactor, plasma flow, temperature. Based on the NIST database [4], we found four spectral lines — λA, λB, λC and λD — typical for low temperature plasma in air. keywords: configuration; divergent; flow; plasma; temperature cache: ap-1516.pdf plain text: ap-1516.txt item: #283 of 1656 id: ap-1518 author: Al-Turki, Y. A.; Attia, A.-F.; Soliman, H. F. title: Optimization of Fuzzy Logic Controller for Supervisory Power System Stabilizers date: 2012 words: 4897 flesch: 63 summary: B. Coding of fuzzy set parameters The coded parameters are arranged on the basis of their constraints, to form a chromosome of the pop- ulation. Thus, the aim of fuzzy control systems is to replace a skilled hu- man operator with a fuzzy rules-based system. keywords: adaptive; generator; parameters; pss; rules; set; sets; sflc; system cache: ap-1518.pdf plain text: ap-1518.txt item: #284 of 1656 id: ap-1520 author: Balázs, L. G.; Mészáros, A.; Horváth, I.; Bagoly, Z.; Veres, P.; Tusnády, G. title: Angular Distribution of GRBs date: 2012 words: 5501 flesch: 69 summary: In Kippen, R. M., Mallozzi, R. S., Fishman, G. J. (eds.): AIP Conf. [23] Fishman, G. J., Meegan, C. A., Wilson, R. B., et al.: keywords: apj; distribution; grbs; point; samples; variables cache: ap-1520.pdf plain text: ap-1520.txt item: #285 of 1656 id: ap-1522 author: Baroch, V.; Duchoň, B.; Faifrová, V.; Říha, Z. title: Teaching Management at Technical Universities, Business Reality in the Academic Environment date: 2012 words: 2890 flesch: 57 summary: Abstract Students of technical universities often do not understand why their studies should include learning management skills (in addition to the study of economics). It also follows from these surveys that businesses require management skills to be trained at universi- ties (in-service training courses are an additional ex- pense for business companies [3]). keywords: business; graduates; management; simulation; skills; students; teaching cache: ap-1522.pdf plain text: ap-1522.txt item: #286 of 1656 id: ap-1524 author: Ficker, T. title: An Optimal Procedure for Determining the Height Parameters of Fracture Surfaces date: 2012 words: 1226 flesch: 54 summary: The first problem is that we do not know the optimal number of surface sites to be visited with the confocal mi- croscope in order to obtain reliable profile parameter values. fahmi_dry_cyc_impr.eps Acta Polytechnica Vol. 52 No. 2/2012 An Optimal Procedure for Determining the Height Parameters of Fracture Surfaces T. Ficker Abstract This paper presents an attempt to find an optimal procedure for determining the height parameters of fracture surfaces. keywords: fracture; parameters; sites; surface cache: ap-1524.pdf plain text: ap-1524.txt item: #287 of 1656 id: ap-1526 author: Havlásek, P.; Jirásek, M. title: Modeling of Concrete Creep Based on Microprestress-solidification Theory date: 2012 words: 6110 flesch: 59 summary: In this paper, values of parameters used by the microprestress-solidification theory (MPS) are recommended and their influence on the creep compliance function is evaluated and checked against experimental data from the literature. 3 Numerical simulations In this section, experimental data are compared to results obtained with MPS theory, which reduces to the standard B3 model in the special case of basic creep. keywords: concrete; creep; data; loading; temperature cache: ap-1526.pdf plain text: ap-1526.txt item: #288 of 1656 id: ap-1528 author: Michalec, I.; Marônek, M. title: Influence of the Surface Layer when the CMT Process Is Used for Welding Steel Sheets Treated by Nitrooxidation date: 2012 words: 2232 flesch: 59 summary: [4] Dománková, M. et al: Influence of nitridation and nitrooxidation processes on microstructure and corrosion properties of low carbon deep-drawing steels. However, the surface layer is a major problem during the welding process, and welding specialists face many problems regarding the weldability of steel sheets. keywords: corgon18; material; nitrooxidation; steel; surface; welding cache: ap-1528.pdf plain text: ap-1528.txt item: #289 of 1656 id: ap-1530 author: Povolotskaya, E.; Mach, P. title: FMEA and FTA Analyses of the Adhesive Joining Process using Electrically Conductive Adhesives date: 2012 words: 3836 flesch: 63 summary: FMEA is a technique for analyzing the occur- rence of process failures and their effect on the re- sult of a process There are four basic types of FMEA: process FMEA, system FMEA, de- sign FMEA and service FMEA. keywords: adhesive; analysis; failure; fault; fmea; fta; joining; process; risk; tree cache: ap-1530.pdf plain text: ap-1530.txt item: #290 of 1656 id: ap-1532 author: Vítek, S.; Fliegel, K.; Páta, P.; Koten, P. title: Utilization of Image Intensifiers in Astronomy date: 2012 words: 1133 flesch: 58 summary: In this paper we present the properties of image intensifiers, used together with fast TV cameras for astronomical purposes within the MAIA project(Meteor Keywords: image intensifier, astronomy, meteors. keywords: image; intensifier; lens cache: ap-1532.pdf plain text: ap-1532.txt item: #291 of 1656 id: ap-1534 author: Andert, David; Frydrych, Jan; Gerndtová, Ilona title: Use of Grasses and Mixtures of Grasses for Energy Purposes date: 2012 words: 2238 flesch: 62 summary: The optimum proportion of grass dry matter is from 35 to 50 % in the total d.m. On September 8, all grassland mixtures and grass species for biomass pro- duction were harvested. keywords: grass; matter; variant; yield cache: ap-1534.pdf plain text: ap-1534.txt item: #292 of 1656 id: ap-1536 author: Biath, Peter; Ondruška, Juraj title: Idealized Compression Ratio for a Screw Briquetting Press date: 2012 words: 1960 flesch: 57 summary: The re- sults will clarify how the material changes in volume during compaction (although only idealized), and will be of great benefit to further research and develop- ment of screw presses. The research area focuses on the principle of screw presses due to the achievement of the high- est with a view to achieving the highest quality pro- duction using this principle. keywords: compression; ratio; screw; space cache: ap-1536.pdf plain text: ap-1536.txt item: #293 of 1656 id: ap-1538 author: Bukovský, Ivo; Kolovratník, Michal title: A Neural Network Model for Predicting NOx at the Mělník 1 date: 2012 words: 3065 flesch: 53 summary: For more recent works, including studies of conventional NN in energetic processes, we may refer to papers [5–8], which deal with computational intelligence tools (neural networks, genetic algorithms) focused on biomass combustion. Figure 3: Detail from Figure 2 — a good prediction Figure 4: Detail from Figure 2 — a bad prediction due to outliers in the training data which is a typical problem with the improper use of neural networks for complicated systems. keywords: data; figure; input; network; neural; nox; prediction; time cache: ap-1538.pdf plain text: ap-1538.txt item: #294 of 1656 id: ap-1540 author: Chríbik, Andrej; Polóni, Marián; Lach, Ján title: Effect of Gas Mixture Composition on the Parameters of an Internal Combustion Engine date: 2012 words: 2268 flesch: 49 summary: The introduction is a brief statement of the nature of gas mixture compositions that are useful for the purposes of combustion engines, together with the basic physical and chemical properties relevant to the burning of this gas mixture. Several previously published results have shown a significant effect of blending hydrogen into natural gas with the aim to improve the emission parameters of internal combustion engines. keywords: combustion; engine; gas; hydrogen; mixture cache: ap-1540.pdf plain text: ap-1540.txt item: #295 of 1656 id: ap-1542 author: Ismail, W. Ali; Braim, R. Rasul; Ketuly, K. Aziz; Awang Bujag, D. Siti Shamsiah; Arifin, Zainudin title: Production of Biocellulosic Ethanol from Wheat Straw date: 2012 words: 4446 flesch: 52 summary: Acid hydrolysis is becoming more popular, due to its lower cost and greater ef- fectiveness than enzymatic hydrolysis [7]. Acid hydrolysis can be divided into two groups: (a) concentrated-acid hydrolysis and (b) dilute-acid hydrolysis. keywords: acid; concentration; ethanol; fermentation; hydrolysis; min; straw; wheat; yeast cache: ap-1542.pdf plain text: ap-1542.txt item: #296 of 1656 id: ap-1544 author: Janeba, Břetislav; Kolovratník, Michal; Bartoš, Ondřej title: Measurement of O2 in the Combustion Chamber of Apulverized Coal Boiler date: 2012 words: 1915 flesch: 58 summary: Another disadvantage of classical types of O2 analyzers is that a flue gas sam- ple cooler needs to be used, which makes the entire measurement system complicated and delays the de- livery of the acquired information. Keywords: O2 measurement, Lambda probe, Pulverized coal boiler. keywords: analyzer; combustion; extraction; sensor cache: ap-1544.pdf plain text: ap-1544.txt item: #297 of 1656 id: ap-1546 author: Jiříček, Ivo; Rudasová, Pavla; Žemlová, Tereza title: A Thermogravimetric Study of the Behaviour of Biomass Blends During Combustion date: 2012 words: 2163 flesch: 58 summary: [2] Van Loo, S., Koppejan, J.: The handbook of biomass combustion and co-firing. The difference in burnout temper- ature between charcoal and other biomass samples was in the range of 51–73 ◦C, see Tabular 2. keywords: biomass; combustion; heat; ignition; straw; temperature cache: ap-1546.pdf plain text: ap-1546.txt item: #298 of 1656 id: ap-1548 author: Kolařík, Ladislav; Sahul, Miroslav; Kolaříková, Marie; Sahul, Martin; Turňa, Milan; Felix, Michal title: Resistance Spot Welding of dissimilar Steels date: 2012 words: 1766 flesch: 62 summary: The aim of our paper is to analyze and compare the prop- erties of resistance spot welds of low carbon steel and austenitic stainless steel. The first one was done in austenitic stainless steel across the weld nugget and the other in low carbon steel through HAZ and the weld nugget. keywords: carbon; resistance; spot; steel; welding cache: ap-1548.pdf plain text: ap-1548.txt item: #299 of 1656 id: ap-1550 author: Kracík, Petr; Pospíšil, Jiří; Šnajdárek, Ladislav title: Heat Exchangers for Condensation and Evaporation Applications Operating in a Low Pressure Atmosphere date: 2012 words: 2073 flesch: 61 summary: The heat transfer red through the copper tube wall: Q̇S = Q̇B +ΔQ̇56 = Q̇V −ΔQ̇12 [W] (5) • derivation equations of heat transfer through a circular wall The heat passage of the wall is composed of conduction, convection and also radiation. The calculation is based on Newton’s principle of heat transfer and the Fourier heat conduction principle, provided there is a parallel arrangement of pipes. keywords: coefficient; heat; pressure; transfer; tube cache: ap-1550.pdf plain text: ap-1550.txt item: #300 of 1656 id: ap-1552 author: Krátký, Lukáš; Jirout, Tomáš; Nalezenec, Jiří title: Lab-scale Technology for Biogas Production from Lignocellulose Wastes date: 2012 words: 2749 flesch: 54 summary: The influences of LHW on the structure of wheat straw and boxboard are shown in Figure 5. A) straw before B) straw after C) boxboard before D) boxboard after Figure 5: Influence of LHW on the structure of biomass — processing parameters 200 ◦C, 20 min 56 Acta Polytechnica Vol. 52 No. 3/2012 A – scheme of the unit B – lab unit 1 – bottle with substrate, 2 – burette, 3 – balancing bottle Figure 6: Lab testing unit for investigating biogas yield In general, substrate pretreated with LHW is more digestible, the amount of biogas is increased, the residence time in the fermenter decreases, and pumping and homogenization are facilitated [5]. 4 Lab-batch tests for an investigation of biogas yield A test known as Biochemical Methane Potential (BMP) is widely used for evaluating the anaerobic biodegrability of wastes. keywords: biogas; biomass; figure; lab; lhw; pretreatment; technology cache: ap-1552.pdf plain text: ap-1552.txt item: #301 of 1656 id: ap-1554 author: Križan, Peter; Matúš, Miloš; Kers, Jaan; Vukelić, Djordje title: Change of Pressing Chamber Conicalness at Briquetting Process in Briquetting Machine Pressing Chamber date: 2012 words: 2905 flesch: 54 summary: 5 Conclusion The main aim of this paper has been to present the results of our experiment to detect the impact of the conical shape of pressing chambers. Some holding time while the pressed briquette is under pressure is necessary in order to eliminate pressing expansion. keywords: briquette; chamber; conical; parameters; pressing; pressure cache: ap-1554.pdf plain text: ap-1554.txt item: #302 of 1656 id: ap-1556 author: Lisý, Martin; Baláš, Marek; Moskalík, Jiří; Štelcl, Otakar title: Biomass Gasification — Primary Methods for Eliminating Tar date: 2012 words: 3105 flesch: 56 summary: 6 Initial experimental conditions The basic parameters that had to be set included dolomite particle size, based on the volume and the velocity of the moving gas, and also the mass of the fluidized bed in the reactor in the course of its oper- ation. However, it seems that the addition of dolomite in the fluidized bed may be an effective primary measure for cutting down the tar content in fuel gas. keywords: bed; biomass; dolomite; gas; gasification; reactor; tar; temperature cache: ap-1556.pdf plain text: ap-1556.txt item: #303 of 1656 id: ap-1558 author: Matúš, Miloš; Križan, Peter title: Modularity of Pressing Tools for Screw Press Producing Solid Biofuels date: 2012 words: 2533 flesch: 54 summary: The whole workload is transmitted in the axis of the ma- chine through the outer flange system (tensile stress) 71 Acta Polytechnica Vol. 52 No. 3/2012 Figure 1: Newly-patented design of a screw press Figure 2: Pressing chamber with tools (1 – feeding screw, 2 – pressing screw, 3 – pressing chamber, 4 – nozzles) and the continuous solid spindle with pressing screws on the ends (compressive stress). Pressing screws are designed as monolithic (Figure 3), as well as folded (Figure 8, Figure 9), which can have a rotating tip to reduce friction. keywords: chamber; figure; material; pressing; screw cache: ap-1558.pdf plain text: ap-1558.txt item: #304 of 1656 id: ap-1560 author: Moskalík, Jiří; Škvařil, Jan; Štelcl, Otakar; Baláš, Marek; Lisý, Martin title: Energy Recovery from Contaminated Biomass date: 2012 words: 2641 flesch: 59 summary: References [1] Baláš, M., Lisý, M.: Water-steam influence on biomass gasification process, Acta Metallurgica Slovaca, 11, 1, 2005, 14–21, (in Czech). For the experiments, chipboard waste was chosen as a representative sample of contaminated biomass. keywords: biomass; chipboard; energy; fuel; gasification; temperature; wastes cache: ap-1560.pdf plain text: ap-1560.txt item: #305 of 1656 id: ap-1562 author: Pavlatová, Monika; Horáková, Marta; Hladík, Jan; Špatenka, Petr title: Plasma Surface Treatment of Powder Materials — Process and Application date: 2012 words: 2798 flesch: 52 summary: [2, 3] The bonding of new functional groups on the molecular chain during plasma surface treatment of polymer materials is one way in which this type of treatment can be used. We also partic- ipate in and support research in other applications of plasma surface treatment. keywords: energy; figure; material; plasma; powder; surface; treatment cache: ap-1562.pdf plain text: ap-1562.txt item: #306 of 1656 id: ap-1564 author: Plaček, Viktor; Oswald, Cyril; Hrdlička, Jan title: Optimal Combustion Conditions for a Small-scale Biomass Boiler date: 2012 words: 1867 flesch: 51 summary: However, a smaller combustion chamber leads to issues with combustion process control. 2 Experimental arrangement and deployment The basic arrangement used for combustion control of small-scale biomass boilers is depicted in Figure 1. keywords: biomass; boiler; combustion; control; scale cache: ap-1564.pdf plain text: ap-1564.txt item: #307 of 1656 id: ap-1566 author: Pilař, Lukáš; Hrdlička, Jan title: Research and development of CO2 Capture and Storage Technologies in Fossil Fuel Power Plants date: 2012 words: 2441 flesch: 57 summary: The ammonia process consists of the following main components: – flue gas cooling and the flue gas fan – CO2 absorption – final cleaning of the scrubbed flue gas – CO2 desorption – CO2 final cleaning – CO2 compression – auxiliary cooling source – ammonia treatment A more detailed description is provided in the fol- lowing paragraphs: – flue gas cooling — the absorption process for the ammonia method takes place at low tem- peratures (5–10 ◦C), so the flue gas must be cooled down as much as possible before entering the process. The sys- tem is designed as a closed system, filling with cooling water and removing dense salt water as needed. keywords: ammonia; co2; cooling; flue; gas; power cache: ap-1566.pdf plain text: ap-1566.txt item: #308 of 1656 id: ap-1568 author: Štefanica, Jiří; Hrdlička, Jan title: Experimental Investigation of Radial Gas Dispersion Coefficients in a Fluidized Bed date: 2012 words: 1929 flesch: 61 summary: Tracer gas was injected by pipe 3 in the middle of the perforated plate dis- tributor 5 (open area of 2.51 %) that was supporting the fluidized bed. %] concentration of tracer gas at a given point c∞ [vol. keywords: bed; dispersion; gas; tracer cache: ap-1568.pdf plain text: ap-1568.txt item: #309 of 1656 id: ap-1570 author: Turňa, Milan; Ondruška, Jozef; Turňová, Zuzana title: Explosion Cladding of Lead on Steel date: 2012 words: 1920 flesch: 66 summary: Owing to its low melting point, lead is used with working temperatures only from 150 to 170 ◦C. Only technically pure lead is used in the chemical in- dustry as pure lead has the highest resistance against corrosion. ap-3-12.dvi Acta Polytechnica Vol. 52 No. 3/2012 Explosion Cladding of Lead on Steel Milan Turňa1, Jozef Ondruška1, Zuzana Turňová1 1Slovak University of Technology, Faculty of Materials Science and Technology, J. Bottu 25, 917 24 Trnava, Slovakia Correspondence to: milan.turna@stuba.sk Abstract This work deals with explosion cladding of lead on steel. keywords: lead; max; steel; test; welding cache: ap-1570.pdf plain text: ap-1570.txt item: #310 of 1656 id: ap-1572 author: Baláš, Marek; Lisý, Martin; Štelcl, Ota title: The Effect of Temperature on the Gasification Process date: 2012 words: 2061 flesch: 51 summary: Reactor parameters: • Capacity (in produced gas) 100 kWt • Fuel demand (consumption, requirement) 150 kWt • Wood consumption 40 kg · h−1 • Air flow rate 50 m3 n · h−1 The basic fluid generator operation characteris- tics are described below: • Operation of the fluid generator – after ig- nition, the fluid generator is operated in combus- tion mode, so that its heating is quickit heats up quickly. This paper describes experiments that investigate the effect of temperature and pressure on gas composition and low calorific value. keywords: dependency; figure; gas; gasification; temperature cache: ap-1572.pdf plain text: ap-1572.txt item: #311 of 1656 id: ap-1576 author: Banyai, Daniel; Marcu, Lucian title: A Flexible Adjustment and Control System for Hydraulic Machines date: 2012 words: 2406 flesch: 47 summary: Keywords: adjustable pump, control system, dynamic behavior. the electricity supply and control system for the proportional distributor, the sensors and the distributor to simulate the load; 5 [4]. keywords: control; flow; hydraulic; pressure; pump; system cache: ap-1576.pdf plain text: ap-1576.txt item: #312 of 1656 id: ap-1578 author: Brázdil, Marian; Pospíšil, Jiří title: A Way to Use Waste Heat to Generate Thermoelectric Power date: 2012 words: 1766 flesch: 47 summary: Only materials which possess ZT > 0.5 are re- garded as thermoelectric materials [3]. Thermoelectric generators (TEG) have the poten- tial to recover waste heat as effective energy and to make a major contribution to reducing fossil fuel con- sumption. keywords: energy; figure; heat; materials; temperature cache: ap-1578.pdf plain text: ap-1578.txt item: #313 of 1656 id: ap-1580 author: Stunová, Barbora Bryksí title: Strontium As a Structure Modifier for Non-binary Al–Si Alloy date: 2012 words: 3524 flesch: 56 summary: Oc- casionally there are skeletal particles of magnesium phase Mg2Si, always tied to the eutectic silicon or iron phase. Find- ings of authors in recent years [2–6] show, that mod- ification elements, including strontium, besides the change in morphology of eutectic silicon, also affect intermetallic phases. keywords: eutectic; iron; magnesium; modification; morphology; phases; strontium cache: ap-1580.pdf plain text: ap-1580.txt item: #314 of 1656 id: ap-1582 author: Čermáková, Jiřina; Mrázek, Jakub; Fliegerová, Kateřina; Tenkrát, Daniel title: Replacing Natural Gas by Biogas — Determining the Bacterial Contamination of Biogas by PCR date: 2012 words: 3135 flesch: 51 summary: Most of the biogas that is produced comes from treated sewage sludge and biogas plants, and these systems do not contain a pasteurization step. Biogas samples for DNA extraction were collected by filtration through a 0.22 μm nylon membrane fil- ter (Millipore) directly behind the digester and the adsorption unit. keywords: biogas; biomethane; digester; microorganisms; pcr; plant; vol cache: ap-1582.pdf plain text: ap-1582.txt item: #315 of 1656 id: ap-1584 author: Čermáková, Jiřina; Doucek, Aleš; Polák, Lukáš title: Energy Accumulation by Hydrogen Technologies date: 2012 words: 1877 flesch: 54 summary: The aim of this paper is to introduce hydrogen as a tool for regulating photovoltaic energy in island mode. Hydrogen as an energy car- rier enables photovoltaic energy produced in times of excess power in the grid to be stored, and then supplied to the grid when it is required, i.e., during peak periods in the daily load curve [2]. keywords: energy; hydrogen; photovoltaic; power cache: ap-1584.pdf plain text: ap-1584.txt item: #316 of 1656 id: ap-1586 author: Demianová, Kristína; Ožvold, Milan; Turňa, Milan title: Application of Induction Heating for Brazing Parts of Solar Collectors date: 2012 words: 1880 flesch: 61 summary: Mn Mg Zn Cr Al 0.05–0.15 0.06–0.35 max. 0.1 0.3–0.6 0.02–0.20 0.05–0.3 max. 0.25 balance Table 3: Chemical composition of brazing alloy type Al 104 Brazing alloy type Al 104 (Table 3) in the form of wire was used for fabricating the flange-tube joint. keywords: alloy; brazing; flux; induction; joint cache: ap-1586.pdf plain text: ap-1586.txt item: #317 of 1656 id: ap-1588 author: Dlouhý, Tomáš; Dupal, Tomáš; Dlouhý, Jan title: A Pulverized Coal-Fired Boiler Optimized for Oxyfuel Combustion Technology date: 2012 words: 3228 flesch: 58 summary: According to generally presented recommendations, backed up by our own calculations, a 70 % flue gas recycling ra- tio is considered (i.e. approximately twice the amount of flue gas that forms). The reason for this is the radical effect of false air suction on increasing the amount of flue gas and on lowering the CO2 concentration. keywords: air; boiler; combustion; flue; flue gas; gas; oxygen; temperature cache: ap-1588.pdf plain text: ap-1588.txt item: #318 of 1656 id: ap-1590 author: Goliaš, Marcel; Palenčár, Rudolf title: Determination of Uncertainties for Correlated Input Quantities by the Monte Carlo Method date: 2012 words: 1571 flesch: 51 summary: Figure 2 shows the probability density functions and the frequency distributions (histograms) of the rectangle obtained by the distribution propagation by Monte Carlo simulation for the three correlation coef- ficients. = 2.15 mm2 = 21 · 10−1 mm2, a = 21, r = −1, δ = 1 2 · 10−1 mm2 = 0.05 mm2 (5) 59 Acta Polytechnica Vol. 52 No. 4/2012 Figure 3: The distribution functions of the rectangle for the output quantity Table 3: Validation of the law of propagation of uncertainty by Monte Carlo simulation keywords: carlo; measurement; monte; uncertainty cache: ap-1590.pdf plain text: ap-1590.txt item: #319 of 1656 id: ap-1592 author: Grepl, Martin; Pagáč, Marek; Petrů, Jana title: Laser Cutting of Materials of Various Thicknesses date: 2012 words: 2310 flesch: 62 summary: 4f with a cutting speed of 750 mm ·min−1. Table 4: Laser cutting velocities with 60 % power Number of cut Laser cutting velocities [mm ·min−1] Cut 4a 500 Cut 4b 600 Cut 4c 700 Cut 4d 800 Cut 4e 900 Cut 4f 750 Figure 4: The cuts of variable cutting velocity with constant power 60 % Figure 5: The sample — sheet metal 3.2 mm in thickness (Haynes 718): a) upper side of the sample, b) underside of the sample 64 Acta Polytechnica Vol. 52 No. 4/2012 Table 5: Laser cutting velocities with 80 % power Number of cut Velocities of laser cutting [mm ·min−1] Cut 8a 500 Cut 8b 600 Cut 8c 400 Cut 8d 300 Cut 8e 450 Figure 6: The cuts of variable cutting velocity with constant power 80 % Cuts nos. We also in- vestigated the influence of cutting parameters on the resulting cutting structure from the point of view of shape deformations of the cutting gap and the cre- ation of a recast layer, which is an undesirable ac- companying effect of laser cutting. keywords: cut; cutting; laser; speed cache: ap-1592.pdf plain text: ap-1592.txt item: #320 of 1656 id: ap-1594 author: Janásek, Adam; Čep, Robert; Brychta, Josef title: Checking the Geometric Accuracy of a Machine Tool for Selected Geometric Parameters date: 2012 words: 2628 flesch: 71 summary: References [1] ISO 10791-2 – Test conditions for machine cen- tres — Part 2: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis). [5] ISO 10791-1 – Test conditions for machine cen- tres — Part 1: Geometric tests for machines with horizontal spindle and with accessory heads (hor- izontal Z-axis). keywords: measurement; test cache: ap-1594.pdf plain text: ap-1594.txt item: #321 of 1656 id: ap-1596 author: Janovec, Jiří; Poláchová, Daniela; Junek, Michal title: Lifetime Assessment of a Steam Pipeline date: 2012 words: 2266 flesch: 57 summary: Another topic for research is the design of checks on the service life of steam pipelines in the area of creep damage and damage assessment of the mi- crostructures of grade 15 steels and the new class of T23, T24, P91, P92 and E911 steels. Keywords: life assessment of a steam pipeline, creep damage, assessment of microstructure damage. keywords: assessment; creep; damage; life; operating; steam cache: ap-1596.pdf plain text: ap-1596.txt item: #322 of 1656 id: ap-1598 author: Jusko, Ondrej title: New Abrasive Materials and Their Influence on the Surface Quality of Bearing Steel After Grinding date: 2012 words: 1389 flesch: 62 summary: Figure 4 shows, that when a conventional wheel and an innovative type of abrasive grinding wheel are used with decreasing cut depth, thus reducing the radial feed rate, the roundness deviation also de- creases. A B-VII B64 K75 grinding wheel was used. keywords: grinding; wheel cache: ap-1598.pdf plain text: ap-1598.txt item: #323 of 1656 id: ap-1600 author: Kolařík, Ladislav; Kolaříková, Marie; Kovanda, Karel; Pantůček, Marek; Vondrouš, Petr title: Advanced Functions of a Modern Power Source for GMAW Welding of Steel date: 2012 words: 2594 flesch: 67 summary: Developments in modern microelectronics have led to rapid advances in welding sources. Research and development carried out by manufacturers of welding sources focuses on rapid optimal control of the welding parameters dur- ing welding. keywords: arc; function; root; sample; short; transfer; welding cache: ap-1600.pdf plain text: ap-1600.txt item: #324 of 1656 id: ap-1602 author: Kupec, Tomáš; Hlavačová, Ivana; Turňa, Milan title: Metallurgical Joining of Magnesium Alloys by the FSW Process date: 2012 words: 1391 flesch: 56 summary: 3 Conclusions This paper has presented a brief survey of the met- allurgy of welding Mg alloys using the FSW process. Figure 4: Microstructure of base metal (AZ31alloy), etch. keywords: base; figure; metal; welding cache: ap-1602.pdf plain text: ap-1602.txt item: #325 of 1656 id: ap-1604 author: Laska, Mateusz; Kazior, Jan title: Influence of Various Process Parameters on the Density of Sintered Aluminium Alloys date: 2012 words: 1344 flesch: 52 summary: The results showed that the green density increases with compaction pressure, but that sintered density is independent of green density (compaction pressure) for each sintering temperature. Figure 2: Sintered density to theoretical density ratio as a function of compaction pressure for: (A) EA231, (B) EA321, (C) EA431 The negative values of the densification factor curves of the EA231 and EA321 powders therefore correspond with the observed changes in the geom- etry of the samples and the swelling of the sintered parts. keywords: compaction; density; pressure; sintering cache: ap-1604.pdf plain text: ap-1604.txt item: #326 of 1656 id: ap-1606 author: Marcu, Ioan-Lucian; Banyai, Daniel-Vasile title: Fundamental Research on Hydraulic Systems Driven by Alternating Flow date: 2012 words: 2071 flesch: 45 summary: [4] The simplest solution for the construction of a ro- tary hydraulic motor working with alternating flow is to use in the same assembly three different oscillat- ing motors with a gear rack (see elements 1 and 3 in Figure 2a and 2b). ap-4-12.dvi Acta Polytechnica Vol. 52 No. 4/2012 Fundamental Research on Hydraulic Systems Driven by Alternating Flow Ioan-Lucian Marcu1, Daniel-Vasile Banyai1 1Technical University of Cluj-Napoca, Department of Mechanical Engineering, B-dul Muncii Nr. 103-105 Cluj-Napoca Romania Correspondence to: Lucian.Marcu@termo.utcluj.ro Abstract This paper presents a new approach to rotary hydraulic systems, and the functional principles of rotary hydraulic systems that can work using alternating flows. keywords: alternating; flow; motor; phase; pressure cache: ap-1606.pdf plain text: ap-1606.txt item: #327 of 1656 id: ap-1608 author: Petera, Pavel title: Holding Pressure and Its Influence on Quality in PIM Technology date: 2012 words: 1564 flesch: 56 summary: Keywords: PIM, holding pressure, phase separation. Measurements were made using various holding pressure values. keywords: density; holding; powder; pressure cache: ap-1608.pdf plain text: ap-1608.txt item: #328 of 1656 id: ap-1610 author: Purgar, Amon; Winter, Franz title: Concepts of Emission Reduction in Fluidized Bed Combustion of Biomass date: 2012 words: 2306 flesch: 56 summary: This status report focuses on the current operation of fluidized bed combustors. Various emission reduction concepts for fluidized bed combustors that are typical for their industrial sector are discussed. keywords: bed; combustors; flue; gas; plants cache: ap-1610.pdf plain text: ap-1610.txt item: #329 of 1656 id: ap-1612 author: Skaloń, Mateusz; Kazior, Jan title: Influence of the Amount of Master Alloy on the Properties of Austenitic Stainless Steel AISI 316L Powder Sintered in Hydrogen date: 2012 words: 1970 flesch: 57 summary: 3.3 Microhardness Figure 3 presents the results of microhardness mea- surements of sintered AISI 316L powders. sintered AISI 316L base powder and b) AISI 316L modified with 0.4 wt. % of boron in MasterAlloy form Figure 7: Surface microstructure of a) sintered AISI 316L base powder and b) keywords: 316l; aisi; boron; density cache: ap-1612.pdf plain text: ap-1612.txt item: #330 of 1656 id: ap-1614 author: Vavruška, Petr title: Creating a Multi-axis Machining Postprocessor date: 2012 words: 2472 flesch: 61 summary: It is usually possible to specify the limits of machine tool axes and then during transformation the postprocessor checks the positions of the axes in the whole machine tool. Multi-axis machine tools are distinguished by their nomenclature (location of the rotary axes), and hence transformation equations can be created. keywords: axis; data; machine; postprocessor; tool cache: ap-1614.pdf plain text: ap-1614.txt item: #331 of 1656 id: ap-1616 author: Zahradník, Radek title: The Simulation of the Influence of Water Remnants on a Hot Rolled Plate after Cooling date: 2012 words: 1033 flesch: 59 summary: Keywords: water remnants, FEA, simulation, hot plate. This paper focuses on a numerical calculation (finite ele- ment analysis) of rolled plate deformations, and the goal is to find whether the water remnants have a significant influence on the shape of the rolled plate. keywords: figure; plate cache: ap-1616.pdf plain text: ap-1616.txt item: #332 of 1656 id: ap-1618 author: Murray-Smith, David J. title: An Application of the Individual Channel Analysis and Design Approach to Control of a Two-input Two-output Coupled-tanks System date: 2012 words: 8730 flesch: 55 summary: The avail- ability of a comprehensive nonlinear model of the system, together with linearised representations ap- propriate for control system design, also makes this system suitable for the teaching of practical aspects of multi-input multi-output control system analysis and design using ICAD or other approaches. This could also illustrate the benefits of bringing together simulation and experimental testing within the processes of control system design and implemen- tation. keywords: channel; control; design; figure; input; level; line; results; simulation; system; tank cache: ap-1618.pdf plain text: ap-1618.txt item: #333 of 1656 id: ap-1620 author: Bauer, Jan title: Simulation of a Matrix Converter Fed Drive With Sliding Mode Control date: 2012 words: 4321 flesch: 63 summary: Let us to investigate the existence condition for sliding mode torque control. Principle of sliding mode torque control. keywords: control; converter; current; machine; mode; state; torque; vector; voltage cache: ap-1620.pdf plain text: ap-1620.txt item: #334 of 1656 id: ap-1622 author: Beniak, Juraj; Ondruška, Juraj; Čačko, Viliam title: Design Process of Energy Effective Shredding Machines for Biomass Treatment date: 2012 words: 2131 flesch: 61 summary: However, it is also necessary to design an experiment for other types of materials and for other subsidiary parameters that can affect the process of material disintegration, and thus increase the energy consumed in these processes (by these devices). In the case of material moisture, we have some practical experience, but we have not carried out any 135 Acta Polytechnica Vol. 52 keywords: angle; face; material; power; torque; wedge cache: ap-1622.pdf plain text: ap-1622.txt item: #335 of 1656 id: ap-1624 author: Brabec, Jiří; Helmich, Martin title: Development of an Ultralight with a Ducted Fan date: 2012 words: 3206 flesch: 58 summary: Keywords: available thrust, required thrust, propulsion, ducted fan. The following procedure will work with experimen- tally obtained available thrust values. keywords: aircraft; power; propulsion; speed; thrust; unit cache: ap-1624.pdf plain text: ap-1624.txt item: #336 of 1656 id: ap-1626 author: Brendle, Christian; Niesche, Annegret; Korff, Alexander; Radermacher, Klaus; Leonhardt, Steffen title: Femoral Test Bed for Impedance Controlled Surgical Instrumentation date: 2012 words: 2641 flesch: 59 summary: 3.1 Electrical contacting The Agilent E4890A LCR Meter has four BNC con- nectors used for impedance measurements, two for the low connector pair and two for the high connector pair. The ε′′r of BC values are in accordance with the published values for PMMA. keywords: figure; hip; impedance; measurement; pmma; values; wall cache: ap-1626.pdf plain text: ap-1626.txt item: #337 of 1656 id: ap-1628 author: Černek, Petr; Brejcha, Michal; Hájek, Jan; Pígl, Jan title: A Comparison of Power Quality Controllers date: 2012 words: 2047 flesch: 64 summary: FACTS: modelling and sim- ulation in power networks. 1 Introduction In recent decades, power quality has become topic number one. keywords: network; power; quality; voltage cache: ap-1628.pdf plain text: ap-1628.txt item: #338 of 1656 id: ap-1630 author: Černý, Viktor title: Energy Estimation of Distributed Phase-shift Beamforming date: 2012 words: 6163 flesch: 68 summary: The steps required for 1-packet two-way communi- cation between modules A1 and B1 are: 1. module A1 broadcasts data in cluster A on fre- quency fd, Fig. In order to prevent this situation, we can install batteries with higher capacities at the relays, or we can increase the num- ber of relay modules. keywords: cluster; data; energy; fig; modules; phase cache: ap-1630.pdf plain text: ap-1630.txt item: #339 of 1656 id: ap-1632 author: Drnek, Kryštof title: Hygiena 3, a Forgotten Project for Electrolytic Water Treatment date: 2012 words: 2687 flesch: 71 summary: Last but not least, there was the problem of electrolytic water treatment. The sludge taken in treatment process must not decompose, sand from the sand pool must contain not more than 10% of dry residue, and the sludge from the sedi- mentation tank must contain not more than 91% of water. keywords: city; project; sludge; system; treatment; water cache: ap-1632.pdf plain text: ap-1632.txt item: #340 of 1656 id: ap-1634 author: Grünwald, Ondrej title: Model of Customer Buying Behavior in the CZ Mobile Telecommunication Market date: 2012 words: 6719 flesch: 62 summary: Price level was clearly the most common considera- tion that was chosen as the must-avoid level. A large proportion of respondents (91.6%) limited the tariffs acceptable to them to an average price of CZK635 46 Acta Polytechnica Vol. 52 No. 5/2012 C o u n t o f ta ri ff s 268 251 239 228 216 201 181 166 150 135 121 112 100 84 65 58 51 40 35 29 22 16 11 6 1 Price [CZK] 32 50 30 20 29 10 28 10 27 10 26 10 25 10 24 10 23 10 22 10 21 10 20 10 19 10 18 10 17 10 16 10 15 10 14 10 13 10 12 10 11 10 10 1091 0 81 0 71 0 61 0 51 0 41 0 31 0 21 0 11 0 Page 1 Figure 8: Distribution of tariff prices in screening sections. keywords: b e; m b; m s; price; u m; u t cache: ap-1634.pdf plain text: ap-1634.txt item: #341 of 1656 id: ap-1636 author: Halupka, Ivan; Kollár, Ján; Pietriková, Emília title: A Task-driven Grammar Refactoring Algorithm date: 2012 words: 4875 flesch: 48 summary: The difference in objective functions is the difference between the values of the objective function calculated for a post-grammar of the current population and the corresponding post-grammar of the previous population of grammars. The second step in the first phase of the algorithm creates corresponding post-grammars for each gram- mar population entity by applying its process chain to the initial grammar, and finally the third step calcu- lates the difference of the objective function calculated for the initial grammar and the post-grammar of the corresponding grammar population entity. keywords: algorithm; context; function; grammar; objective; population; process; refactoring cache: ap-1636.pdf plain text: ap-1636.txt item: #342 of 1656 id: ap-1638 author: Henychová, Petra; Hiřmanová, Klára; Vraný, Martin title: Diamond Films for Implantable Electrodes date: 2012 words: 2432 flesch: 62 summary: et al. Raman and conductivity studies of boron-doped microcrystalline diamond, faceted nanocrystalline diamond and cauliflower diamond films. In this paper, we focus on optimizing the growth of thin diamond films by plasma-enhanced microwave chemical vapor deposition. keywords: boron; diamond; growth; temperature cache: ap-1638.pdf plain text: ap-1638.txt item: #343 of 1656 id: ap-1640 author: Holovský, Jan title: ESSO — Electrification of the Central Labe Districts between 1916 and 1950 date: 2012 words: 4951 flesch: 66 summary: 3.3 Hydroelectric power stations Besides steam power plants, ESSO also owned several hydroelectric power plants. The capital needed for constructing new power stations, elec- tric wiring, transformation stations, etc., was bor- rowed from financial institutions, villages, districts, or directly from electricity consumers, who received principals in return. keywords: electricity; esso; kolín; labe; plant; power; power plant; room; station; steam; union cache: ap-1640.pdf plain text: ap-1640.txt item: #344 of 1656 id: ap-1642 author: Müller, Miroslav title: Overhead Line Mechanics Taking the Influence of Wind into Account date: 2012 words: 2616 flesch: 67 summary: 2 Dynamic model of wire The analysis of dynamic behavior is based on wave equations (1)–(3). The constants describing the relationship be- tween the wire and the air are: kD = 1 2ρairφcond , kM = 1 2ρairφ 2 cond , where ρair is air density, and φcond is wire diameter. keywords: forces; harmonics; model; position; wind; wire cache: ap-1642.pdf plain text: ap-1642.txt item: #345 of 1656 id: ap-1644 author: Náhlík, Josef; Janoušek, Michal; Šobáň, Zbyněk title: Gated Graphene Electrical Transport Characterization date: 2012 words: 1763 flesch: 62 summary: Water molecules behave as doping atoms, because the gate voltage affects their polarization and they add their own electric field intensity to the intensity caused by the Figure 2: Scheme of the polarization of water molecules by gate voltage in backgated graphene. Polarized molecules and their electric intensity could be one of the effects that cause hysteresis be- tween the forward and backward sweep of gate voltage in the resistivity/gate voltage characteristic. keywords: gate; graphene; hysteresis; silicon; substrate; voltage cache: ap-1644.pdf plain text: ap-1644.txt item: #346 of 1656 id: ap-1646 author: Santos, Susana Aguiar; Venema, Boudewijn; Leonhardt, Steffen title: Accelerometer-assisted PPG Measurement During Physical Exercise Using the LAVIMO Sensor System date: 2012 words: 3479 flesch: 58 summary: 81 Acta Polytechnica Vol. 52 No. 5/2012 Figure 3: Obtained ECG and PPG signals of a healthy subject at 0 km/h. 2.4 Strategies for reduction of movement artifacts The corruption of a PPG signal through light or move- ment of the subject is a limiting factor in a PPG system. Nevertheless, using the 3-axis accelerometer data recorded together with the PPG measurements, it should be possible to extract a ‘clean’ Figure 4: Obtained ECG and PPG signals of a healthy subject walking at 2 km/h. PPG from a PPG with artifacts. keywords: accelerometer; activity; artifacts; ecg; ppg; sensor; signal; system cache: ap-1646.pdf plain text: ap-1646.txt item: #347 of 1656 id: ap-1648 author: Schneider, Dorian title: Control Algorithms for Large-scale Single-axis Photovoltaic Trackers date: 2012 words: 3946 flesch: 67 summary: Keywords: single-axis solar tracker, backtracking, photovoltaic, sun tracking. Tracking and backtracking angles, sun azimuth and elevation plotted for January 1st, 2012 in Berlin. keywords: angle; axis; rotation; sat; sun; system; tracking; yield cache: ap-1648.pdf plain text: ap-1648.txt item: #348 of 1656 id: ap-1650 author: Selecký, Martin; Meiser, Tomáš title: Integration of Autonomous UAVs into Multi-agent Simulation date: 2012 words: 3580 flesch: 55 summary: The system also does not allow the co- existence of hardware UAVs together with simulated UAVs. For this reason mixed reality simulations, which allow integration of real hardware UAVs and simulated virtual UAVs to co-exist in one environ- ment, are helpful and necessary in the development process. keywords: agent; collision; figure; flight; hardware; system; time; uavs; wind cache: ap-1650.pdf plain text: ap-1650.txt item: #349 of 1656 id: ap-1652 author: Spohner, Milan title: A Study of the Properties of Electrical Insulation Oils and of the Components of Natural Oils date: 2012 words: 1986 flesch: 53 summary: 5 shows the density in dependence on the inverse temperature interval from 270 to 350K. The lowest values were for mineral oils and methyl ester rapeseed oil. 2.2 Dielectric properties For a study of dielectric properties, samples of FAME and rapeseed oil methyl ester were selected for a com- parison with the two fatty acids found in rapeseed oil. keywords: density; dielectric; methyl; oil; oils; rapeseed cache: ap-1652.pdf plain text: ap-1652.txt item: #350 of 1656 id: ap-1654 author: Turoň, Václav title: A Study of Parameters Setting of the STADZT date: 2012 words: 3313 flesch: 61 summary: There are three parameters which closely relate to this issue — window shape, window length and segment overlap. [9] for spectral analysis of non-stationary signals. keywords: resolution; signal; stadzt; time; window cache: ap-1654.pdf plain text: ap-1654.txt item: #351 of 1656 id: ap-1656 author: Visioli, Antonio title: Research Trends for PID Controllers date: 2012 words: 4553 flesch: 58 summary: Acta Polytechnica Vol. 52 No. 5/2012 Research Trends for PID Controllers Antonio Visioli University of Brescia, Via Branze 38, I-25123 Brescia, Italy Corresponding author: Keywords: PID controllers, design, tuning, control structures. keywords: control; controllers; design; performance; pid; point; process; set; time; tuning; visioli cache: ap-1656.pdf plain text: ap-1656.txt item: #352 of 1656 id: ap-1658 author: Votava, Ondřej title: A Network Simulation Tool for Task Scheduling date: 2012 words: 4292 flesch: 66 summary: Keywords: task scheduling, DAG scheduling, simulation, network simulation. Task scheduling is the viewpoint, where a distributed application can be described as a Directed Acyclic Graph and every node of the graph is executed independently. keywords: algorithms; application; computation; network; nodes; scheduling; simulation; systems; task; time cache: ap-1658.pdf plain text: ap-1658.txt item: #353 of 1656 id: ap-1660 author: Weyer, Sören; Röthlingshöfer, Lisa; Walter, Marian; Leonhardt, Steffen title: Evaluation of Bioelectrical Impedance Spectroscopy for the Assessment of Extracellular Body Water date: 2012 words: 3167 flesch: 56 summary: For -2ó +2ó Mean of fluid balance and BIS ECF [ ] l D iff e re n c e b e tw e e n f lu id b a la n ce a n d B IS E C F [ l ] 0 0.5 1 1.5 2 2.5 3 3.5 4 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 Figure 5: Bland-Altman plots illustrating the small- est and greatest difference between the changes in extracellular body fluid (ECF) estimated by BIS and the logged fluid balance plotted against the mean of the two methods. 1 Introduction Maintenance of a constant volume and stable composi- tion of body fluids is essential for homeostasis. keywords: bis; body; cole; fluid; impedance; model; tissue; volume; water cache: ap-1660.pdf plain text: ap-1660.txt item: #354 of 1656 id: ap-1662 author: Winkin, Nadine; Mokwa, Wilfried title: Flexible Multi-Electrode Array for Medical Applications date: 2012 words: 2190 flesch: 61 summary: Figure 4: Dummy stimulator chip (schematic). Keywords: flexible multi-electrode array, thinned silicon chip, electrical stimulation, retinal implant. keywords: chip; electrodes; fig; figure; mea; polyimide cache: ap-1662.pdf plain text: ap-1662.txt item: #355 of 1656 id: ap-1664 author: Závodná, Michaela title: The Electrification of Tramways in Ostrava in 1900–1901 date: 2012 words: 1614 flesch: 66 summary: Electric trams were to be put into operation in Ostrava in October 1900 The first part of this paper deals with technical aspects of electrification the change-over from steam power to electric power, while the second section analyses the dealings between these private companies, subsequent municipalization and the involvement of the municipal self-government of Moravská Ostrava. keywords: company; electrification; moravská; ostrava; transport cache: ap-1664.pdf plain text: ap-1664.txt item: #356 of 1656 id: ap-1666 author: Kratochvíl, Jan; Kružík, Martin title: Energetic Approach to Large Strain Gradient Crystal Plasticity date: 2012 words: 3900 flesch: 72 summary: [13] Giacomini, A., Lusardi L.: Quasistatic evolution for a model in strain gradient plasticity, SIAM J. Math. ∈ ∂δ(ż(t)), z(0) = z0, z ∈ Z, (8) where z0 ∈ Z is an initial condition for the internal variable. keywords: energy; plasticity; z(t cache: ap-1666.pdf plain text: ap-1666.txt item: #357 of 1656 id: ap-1668 author: Demo, Pavel; Sveshnikov, Alexey; Hošková, Šárka; Ladman, David; Tichá, Petra title: Physical and Chemical Aspects of the Nucleation of Cement-Based Materials date: 2012 words: 3620 flesch: 57 summary: Possible connections with the corresponding properties for cement paste are discussed. Keywords: cement paste, induction period, calcium concentration, nucleation rate, time lag. keywords: ca2; cement; concentration; ions; nucleation; paste; portlandite cache: ap-1668.pdf plain text: ap-1668.txt item: #358 of 1656 id: ap-1670 author: Šmilauer, Vít; Hlaváček, Petr; Padevět, Pavel title: Micromechanical Analysis of Cement Paste with Carbon Nanotubes date: 2012 words: 3932 flesch: 64 summary: 6/2012 CNT length w/c Compressive s. (MPa) Flexural s. (MPa) Ref. (µm) Plain CNT Plain CNT < 10 P 0.30 38.3± 8.2 61.8± 0.8 2.3± 0.4 2.3± 0.2 [2] < 30 P 0.30 — — 9.2 12.6 [4] < ∼10 M 0.40 28.9 54.3 6.0 8.23 [8] < 500 P 0.45 52.3± 0.7 62.1± 1.4 6.7 ± 0.1 8.4± 0.2 [5] < 100 P 0.50 — — 5.5 7.2 [9] < ∼5 P — 49 56 16 8 [12] Table 1: Summary of published data on strength gain when CNT is added to cement. There are controversial results for cement paste with admixed CNT up to 500µm in length. keywords: cement; cnt; energy; fracture; paste; strength cache: ap-1670.pdf plain text: ap-1670.txt item: #359 of 1656 id: ap-1672 author: Nežerka, Václav; Zeman, Jan title: A Micromechanics-Based Model for Stiffness and Strength Estimation of Cocciopesto Mortars date: 2012 words: 5047 flesch: 68 summary: These include estimates of the effective ther- mal conductivity of rubber-reinforced cement compos- ites [31], elasticity predictions for early-age cement [5] or alkali-activated [35] pastes, upscaling the compres- sive strength of cement mortars [26], and multi-scale simulations of three-point bending tests of concrete specimens Although these limi- tations have been overcome with the use of Portland cement in the last 50 years, lime mortars still find use in the restoration of historic structures. keywords: brick; cement; lime; matrix; model; mortars; phase; stiffness; strength cache: ap-1672.pdf plain text: ap-1672.txt item: #360 of 1656 id: ap-1674 author: Rypl, Daniel; Bým, Tomáš title: Geometrical Modeling of Concrete Microstructure for the Assessment of ITZ Percolation date: 2012 words: 6613 flesch: 51 summary: [27] constructed over a set of particle surface points. This paper deals with geometrical modeling of the concrete microstructure using realistic shapes of aggregate particles, the geometry of which is represented in terms of spherical harmonic expansion. keywords: aggregate; bounding; box; expansion; itz; particle; percolation; points; spheres; surface; volume cache: ap-1674.pdf plain text: ap-1674.txt item: #361 of 1656 id: ap-1676 author: Valenta, Richard; Šejnoha, Michal title: Hierarchical Modeling of Mastic Asphalt in Layered Road Structures Based on the Mori-Tanaka Method date: 2012 words: 5503 flesch: 51 summary: A comparison with the application of macroscopic homogenized constitutive model for an asphalt mixture is also presented. The following representation is proposed ω = [ τ teq Nτ0 / sinh ( τ teq Nτ0 )]M , (3) where τeq is the current equivalent deviatoric stress andM,N are model parameters. keywords: analysis; asphalt; fig; method; model; mori; scale; sepuc; strain; tanaka cache: ap-1676.pdf plain text: ap-1676.txt item: #362 of 1656 id: ap-1678 author: Patzák, Bořek title: OOFEM — an Object-oriented Simulation Tool for Advanced Modeling of Materials and Structures date: 2012 words: 4141 flesch: 49 summary: The implementation of individual elements is further facilitated by the library of classes representing inte- gration points, integration rules, and finite element interpolation spaces. Derived classes do not inherit interfaces automatically; interface imple- mentation has to be declared by each class explicitly. keywords: class; classes; concrete; design; element; finite; interface; load; model; parallel; problem cache: ap-1678.pdf plain text: ap-1678.txt item: #363 of 1656 id: ap-1680 author: Kruis, Jaroslav; Koudelka, Tomáš; Krejčí, Tomáš title: Hygro-Thermo-Mechanical Analysis of a Reactor Vessel date: 2012 words: 4369 flesch: 57 summary: The application of damage models is described in detail in [5]. Several damage models were used in the computer simulation. keywords: concrete; containment; damage; heat; material; model; moisture; prestress; temperature cache: ap-1680.pdf plain text: ap-1680.txt item: #364 of 1656 id: ap-1682 author: Pospíšilová, Adéla; Lepš, Matej title: Global Optima for Size Optimization Benchmarks by Branch and Bound Principles date: 2012 words: 5405 flesch: 67 summary: Keywords: benchmarks, discrete sizing optimization, branch and bound method, global optima, parallel programming. It is thus advan- tageous to decrease the upper bound on the basis of already obtained objective function values. keywords: algorithm; bound; function; method; optimization; optimum; truss; value cache: ap-1682.pdf plain text: ap-1682.txt item: #365 of 1656 id: ap-1684 author: Valášek, Michael; Šika, Zbynek title: Synthesis of Mechanisms by Methods of Nonlinear Dynamics date: 2012 words: 6123 flesch: 65 summary: (yA − yB)2 + (zA − zB)2 , cosϕ = xD x2 D + z2 D , (20) `AB = √ (xA − xB)2 + (yA − yB)2 + (zA − zB)2, 0 = xA(xB − xA) + yA(yB − yA). In addition, the constraints (20) have been changed into the form cosψ = zB − zA√ (xB − xA)2 + (yB − yA)2 + (zB − zA)2 , cosϕ = xD√ x2 D + z2 D , (24) `AB = √ (xB − xA)2 + (yB − yA)2 + (zB − zA)2, 0 = xA(xB − xA) + yA(yB − yA), ϕi = const., ψi = const. keywords: dimensions; j=1; mechanism; method; parameters; positions; synthesis; system cache: ap-1684.pdf plain text: ap-1684.txt item: #366 of 1656 id: ap-1686 author: Valášek, Michael; Mráz, Ladislav title: Massive Parallelization of Multibody System Simulation date: 2012 words: 3174 flesch: 61 summary: + `i sϕi, (6) and their time derivatives xBi = xi + `iϕ̇i cϕi, yBi = yi + `iϕ̇i sϕi, (7) Rewriting the EOM for the whole system using the equations of motion of single bodies obtained previously, the mass matrix (system matrix) has a block-diagonal structure (8), where each block corre- sponds to one body. 6/2012 Massive Parallelization of Multibody System Simulation Michael Valášek, Ladislav Mráz Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague Technická 4, 166 07 Praha 6, Czech Republic Corresponding author: Michael.Valasek@fs.cvut.cz Abstract This paper deals with the decrease in CPU time necessary for simulating multibody systems by massive parallelization. keywords: body; dynamics; matrix; solution; system cache: ap-1686.pdf plain text: ap-1686.txt item: #367 of 1656 id: ap-1688 author: Skalák, Zdenek title: The Asymptotic Properties of Turbulent Solutions to the Navier-Stokes Equations date: 2012 words: 4076 flesch: 74 summary: [6] Kato, T.: Strong Lp− solutions of the Navier- Stokes equations in Rm, with applications to weak solutions, Math. [9] Miyakawa, T., Schonbek, M.: On optimal decay rates for weak solutions to the Navier-Stokes equations in Rn, Math. keywords: energy; equations; solutions; stokes cache: ap-1688.pdf plain text: ap-1688.txt item: #368 of 1656 id: ap-1690 author: Sváček, Petr; Horáček, Jaromír; Honzátko, Radek; Kozel, Karel title: Simulation of Free Airfoil Vibrations in Incompressible Viscous Flow — Comparison of FEM and FVM date: 2012 words: 6071 flesch: 65 summary: This corresponds to the results of the numeri- cal simulations presented since the system was found stable for upstream flow velocity 35m/s and unstable for upstream flow velocity 40m/s in the case of FEM and 42.5m/s in the case of FVM. Symbol D denotes the diagonal matrix D = diag(0, 1, 1), non-dimensional time is denoted by t, and the non-dimensional space coordinates are denoted by x, y. Symbols u = (u, v)T and p stand for the dimensionless velocity vector and the dimen- sionless pressure, respectively. keywords: angle; fem; flow; fvm; method; numerical; rotation; time; velocity cache: ap-1690.pdf plain text: ap-1690.txt item: #369 of 1656 id: ap-1692 author: Bodnár, Tomáš; Beneš, Ludek; Pirkl, Luboš; Gulíková, Eva title: A Numerical Study of Wind Flow Over a Coal Storage Shelter date: 2012 words: 2864 flesch: 65 summary: A wind tunnel study of turbulent flow over model hills. Similar problems of atmospheric flows over various obstacles are often studied in the available literature. keywords: dispersion; figure; flow; numerical; shelter; variant; wind cache: ap-1692.pdf plain text: ap-1692.txt item: #370 of 1656 id: ap-1694 author: Halama, Jan title: Transonic Flow of Wet Steam — Numerical Simulation date: 2012 words: 2818 flesch: 66 summary: 6/2012 (a) inviscid flow model (b) laminar flow model Figure 2: Mach number isolines, single-phase flow case. and τxx = η 4 3∂xux − 2 3η∂yuy, τxy 6/2012 (a) inviscid flow model (b) laminar flow model Figure 3: Mach number isolines, two-phase flow case. keywords: condensation; flow; method; model; numerical; phase cache: ap-1694.pdf plain text: ap-1694.txt item: #371 of 1656 id: ap-1696 author: Anisimova, Elena; Bednář, Jan; Páta, Petr title: The Point Spread Function Variations inside Wide-field Astonomical Images date: 2013 words: 1744 flesch: 57 summary: Moffat function shape depending on FWHM and atmospheric scattering coefficient β. Figure 2 shows examples of Moffat function shapes. keywords: function; image; imaging; moffat; psf cache: ap-1696.pdf plain text: ap-1696.txt item: #372 of 1656 id: ap-1698 author: Beskin, Grigorii; Greco, Giuseppe; Oganesyan, Gor; Karpov, Sergey title: On Some Statistical Properties of GRBs with Measured Redshifts Having Peaks in Optical Light Curves date: 2013 words: 3935 flesch: 68 summary: optical peaks arise during the main phases of the prompt gamma-ray emission; we will refer to these as prompt optical emission. We studied pair correlations of their gamma-ray and optical parameters, e.g. total energetics, peak optical luminosities, and durations. keywords: gamma cache: ap-1698.pdf plain text: ap-1698.txt item: #373 of 1656 id: ap-170 author: Toman, J.; Černý, R. title: Thermal and Hygric Expansion of High Performance Concrete date: 2001 words: 1435 flesch: 54 summary: (4) Defining the relative elongation as � � ��l l l l l l1 0 1 2 d , (5) we obtain � � � � � �u T u T u TT u, , ,� � �0 0 � � � � � � � � � �� � �� � � � � � T T u u T u uT T Tu u T T T ud d d dl l l l T uu T u� � � �� 0 � � . keywords: expansion; linear; � � cache: ap-170.pdf plain text: ap-170.txt item: #374 of 1656 id: ap-1700 author: Giovannelli, Franco title: Astroparticle Physics Today date: 2013 words: 10332 flesch: 62 summary: This enhances the efficiency of the process of mass transfer from the primary star onto the secondary collapsed star, as discussed by Giovannelli & Ziolkowski (1990) and by Giovannelli et al. (2007) in the case of A 0535+26. The emitted spectra of jets from cosmic sources of different nature are strongly dependent on the angle formed by the beam axis and the line of sight, and obviously by the Lorentz factor of the particles (e.g. Bednarek et al., 1990 and the references therein; Beall, Guillory & Rose, 1999, 2009; Beall, 2002, 2003, 2008, 2009; Beall et al., 2006, 2007). keywords: astrophysics; eds; energy; et al; frontier; giovannelli; graziati; objects; particle; physics; ray; rays; sabau; sources; universe cache: ap-1700.pdf plain text: ap-1700.txt item: #375 of 1656 id: ap-1702 author: Hudec, René; Hudec, Lukáš title: Finding Hidden Treasures: Investigations in US Astronomical Plate Archives date: 2013 words: 1848 flesch: 59 summary: Suggested strategy Our suggested strategy for data mining and plate digitization in US plate archives is as follows. We report here on an ongoing investigation of US astronomical plate archives and tests of the suitability of transportable scanning devices for in situ digitization of archival astronomical plates. keywords: archives; collections; czech; number; observatory; plate cache: ap-1702.pdf plain text: ap-1702.txt item: #376 of 1656 id: ap-1704 author: Hudec, René; Kopel, Fabian; Macsics, Robert; Hadwige, Markus; Heber, Ulrich; Cayé, Walter title: Classification of Variable Objects for Search for GRB Candidates on Bamberg Photographic Plates date: 2013 words: 1969 flesch: 53 summary: We have re-analysed the objects recorded in 6 mea- surement books for southern sky surveys, with empha- sis on detailed investigation of non-classified objects suspected to occur only once (i.e., visible only on one plate and below the limit of other plates). The catalogue is divided according to classification types of non-classified objects, namely previously known and newly discovered variable stars, asteroids, emulsion defects, and true OT-GRB candidates. keywords: bamberg; images; objects; plates; sky cache: ap-1704.pdf plain text: ap-1704.txt item: #377 of 1656 id: ap-1706 author: Hudec, René; Petráček, Vojtěch; Šnita, Dalimil title: Czech Contribution to LOFT date: 2013 words: 1937 flesch: 49 summary: Acta Polytechnica Acta Polytechnica 53(1):30–32, 2013 © Czech Technical University in Prague, 2013 available online at http://ctn.cvut.cz/ap/ CZECH CONTRIBUTION TO LOFT René Hudeca,b,∗, Vojtěch Petráčekc, Dalimil Šnitad a Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-25165 Ondřejov, Czech Republic b Czech Technical University in Prague, Faculty of Electrical Engineering, Technická 2, CZ-16627 Prague, Czech Republic c Czech Technical University in Prague, Faculty of Nuclear Engineering, Břehová 78/7, CZ-11000 Prague, Czech Republic d Institute of Chemical Technology, Technická 5, CZ-16628 Prague,Czech Republic ∗ corresponding author: rhudec@asu.cas.cz Abstract. Production expertise The collaboration teams also have the following pro- duction expertise: • prototype production of SDD for the ALICE exper- iment – ICM Prague; • Post-prototyping contacts in the ON Semiconduc- tor: Roznov, Czech Republic (together with our team, the company tested double-sided technology and later succesfully produced many of the pixel detectors for the ATLAS detector at LHC); • selection and detector tests – participation in de- tector construction (Trieste and Torino); • design and production of the low voltage power supply system for ALICE SDD. 4. keywords: czech; detector; loft; mission; prague; ray; sdd cache: ap-1706.pdf plain text: ap-1706.txt item: #378 of 1656 id: ap-1708 author: Hudec, René; Pína, Ladislav; Inneman, Adolf; Černá, Daniela; Maršíková, Veronika; Tichý, Vladimír; Míka, Martin title: The Czech Contribution to Future Large X-Ray Astronomy Telescopes: Recent Progress date: 2013 words: 2371 flesch: 60 summary: Keywords: X-ray astronomy, X-ray telescopes, X-ray optics. In order to achieve the very high accuracy required for future large space X-ray telescopes, the parameters of the Si wafers need to be optimized (for application in X-ray optics) at the production stage. keywords: czech; optics; ray; telescopes; wafers cache: ap-1708.pdf plain text: ap-1708.txt item: #379 of 1656 id: ap-1710 author: Karpov, Sergey; Beskin, Grigory; Bondar, Sergey; Perkov, Alexey; Ivanov, Evgeny; Guarnieri, Adriano; Bartolini, Corrado; Greco, Giuseppe; Shearer, Andy; Sasyuk, Vyacheslav title: Status and Perspectives of the Mini-MegaTORTORA Wide-field Monitoring System with High Temporal Resolution date: 2013 words: 4437 flesch: 58 summary: Keywords: gamma-ray bursts, high time resolution, wide field photometry. [24, 25], but due to tech- nical limitations it has only been possible either to achieve high temporal resolution of tens of millisec- onds in monitoring of 5′–10′ fields, or to use 5–10 seconds time resolution in wider fields. keywords: channel; detection; field; megatortora; monitoring; resolution; sky; time; transients cache: ap-1710.pdf plain text: ap-1710.txt item: #380 of 1656 id: ap-1712 author: Opiela, Rafał; Małek, Katarzyna; Mankiewicz, Lech; Siudek, Małgorzata; Sokołowski, Marcin; Żarnecki, Aleksander Filip title: Photometric Analysis of Pi of the Sky Data date: 2013 words: 4123 flesch: 64 summary: Precision dispersion of star brightness measurements from standard photometry for 200 s exposures (20 co-added frames) from the Pi of the Sky prototype at the Las Campanas Observatory in Chile. • Identification in the image by photometry with catalog stars from external star catalogs. keywords: catalog; data; measurements; photometry; quality; sky; stars cache: ap-1712.pdf plain text: ap-1712.txt item: #381 of 1656 id: ap-1714 author: Topinka, Martin; Hanlon, Lorraine; Meehan, Seamus title: Integration of the Watcher Telescope into the Sierra Stars Observatory Network – Lessons Learned for GLORIA date: 2013 words: 1795 flesch: 54 summary: Keywords: robotic telescope, gamma-ray burst afterglows, GLORIA, SSON. 2. GLORIA project GLORIA stands for “GLObal Robotic-telescopes In- telligent Array” and will be the first free and open access network of robotic telescopes in the world [4]. keywords: gloria; grb; network; sson; telescope; watcher cache: ap-1714.pdf plain text: ap-1714.txt item: #382 of 1656 id: ap-1716 author: Ulyanov, Alexei; Hanlon, Lorraine; McBreen, Sheila; Foley, Suzanne title: Study of Silicon Photomultipliers for the GRIPS Calorimeter Module date: 2013 words: 2314 flesch: 56 summary: On-axis point source sensitivity versus calorimeter energy resolution (in units of the baseline resolution) for a narrow line (106 s exposure) source and a continuum GRB spectrum (1 s exposure). On-axis continuum point source sensitivity for a 106 s exposure versus transverse crystal size (left) and versus calorimeter depth resolution (right); E−2 spectrum, 0.5 MeV < E < 1.5 MeV. keywords: calorimeter; energy; grips; grm; ray; resolution; sensitivity cache: ap-1716.pdf plain text: ap-1716.txt item: #383 of 1656 id: ap-1718 author: Żarnecki, Aleksander Filip; Piotrowski, Lech Wiktor; Mankiewicz, Lech; Małek, Sebastian title: Luiza: Analysis Framework for GLORIA date: 2013 words: 2952 flesch: 49 summary: The Luiza analysis framework for GLORIA is based on the Marlin package, which was originally developed for data analysis in the new High Energy Physics (HEP) project, International Linear Collider (ILC). The HEP experiments have to deal with enormous amounts of data and distributed data analysis is therefore essential. keywords: analysis; data; framework; gloria; image; luiza; marlin; processor cache: ap-1718.pdf plain text: ap-1718.txt item: #384 of 1656 id: ap-1719 author: Bartlova, Milada; Aubrecht, Vladimir; Bogatyreva, Nadezhda; Holcman, Vladimir title: Multigroup Approximation of Radiation Transfer in SF6 Arc Plasmas date: 2013 words: 2824 flesch: 62 summary: Net emission coefficients Assuming local thermodynamic equilibrium, coeffi- cient of absorption κν is related to the coefficient of emission εν by Kirchhoff’s law εν = Bνκν . Net emission coefficients of SF6 plasma with radius 0.1 cm as a function of temperature for two different cuttings of the frequency interval and various absorption means; comparison with re- sults of Aubrecht keywords: absorption; coefficients; emission; mean; planck; plasma; radiation cache: ap-1719.pdf plain text: ap-1719.txt item: #385 of 1656 id: ap-172 author: Toman, J.; Černý, R. title: Temperature and Moisture Dependence of the Specific Heat of High Performance Concrete date: 2001 words: 1900 flesch: 53 summary: [Te, Ts], K is the heat capacity of the calorimeter, mw is the mass of the water, cw is the specific heat of water, Tw0 is the initial water temperature, L is the latent heat of evaporation of water, Qr is the reaction heat, �m is the mass of evaporated water, � � �m m m m m mcw s N sc� � � � � , (2) mcw is the mass of the calorimeter with water before the measurement, ms is the mass of the system calorimeter-wa- ter-sample after measurement, �mN is the mass of the water naturally evaporated during the measurement (this heat loss is already included in the heat loss calibration curve), �msc is the change of mass due to the chemical reaction of the sample with water (e.g., hydrolysis). (3) However, from the physical point of view, it is more correct to determine the value of the specific heat “pointwise”, in accordance with the definition of specific heat, � � keywords: heat; temperature; water; � � cache: ap-172.pdf plain text: ap-172.txt item: #386 of 1656 id: ap-1721 author: Batani, Dimitri; Hulin, Sebastien; Ducret, Jean Eric; d’Humieres, Emmanuel; Tikhonchuk et al., Vladimir title: Development of the PETAL Laser Facility and its Diagnostic Tools date: 2013 words: 4816 flesch: 62 summary: PETAL laser system The PETAL system, under construction on the LMJ site, has the ultimate goal to reach 7PW (3.5 kJ with 0.5 ps pulses). After a detailed char- acterization of particle emission from PETAL targets, the diagnostics will be used for plasma experiments. keywords: diagnostics; electron; energy; experiments; facility; ignition; interaction; laser; lmj; petal; physics; plasma; proton; target cache: ap-1721.pdf plain text: ap-1721.txt item: #387 of 1656 id: ap-1723 author: Bogachev, Nikolay N.; Bogdankevich, Irina L.; Gusein-zade, Namik G.; Tarakanov, Vladimir P. title: Computer Simulation of a Plasma Vibrator Antenna date: 2013 words: 1470 flesch: 62 summary: Many experiments have been carried out with plasma antennas to transmit and receive signals. Keywords: computer simulation, plasma antenna, KARAT code, MMANA program. keywords: antenna; metal; plasma; radiation cache: ap-1723.pdf plain text: ap-1723.txt item: #388 of 1656 id: ap-1725 author: Bordusau, Siarhei; Madveika, Siarhei; Dostanko, Anatolii title: The Process of Plasma Chemical Photoresist Film Ashing from the Surface of Silicon Wafers date: 2013 words: 2756 flesch: 53 summary: Peculiar features of microwave energy and silicon wafer interaction should be taken into consideration as well as used in developing and their processing in plasma microwave discharge. In order to improve the efficiency of microwave plasma chemical ashing of photoresist films from the surface of silicon wafers a two-stage process of treating was developed. keywords: ashing; chemical; discharge; microwave; photoresist; plasma; wafers cache: ap-1725.pdf plain text: ap-1725.txt item: #389 of 1656 id: ap-1727 author: Borgun, Ievgeniia V.; Azarenkov, Mykola O.; Hassanein, Ahmed; Tseluyko, Oleksandr F.; Maslov, Vasyl I.; Ryabchikovk, Dmitro L. title: The Formation of a Power Multi-Pulse Extreme Ultraviolet Radiation in the Pulse Plasma Diode of Low Pressure date: 2013 words: 4177 flesch: 62 summary: Radiation energies (spike and wide pulse en- ergies) in the 12.2 ÷ 15.8 nm wavelength range as func- tions of the stored energy for the different anode di- ametres: da = 1.5, 2.5, 5.0 mm. and third half-periods is high in spite of a much lower (as compared to the first half-period) energy pump, indicates that the number of particles in the dense radiating plasma remains nearly constant for a fairly long time (approximately 6 µs). The conversion efficiency of pumped energy into radiation energy at the double layer formation (beam mechanism of plasma heating) is essentially higher in comparison with ordinary heating by current, be- cause in first case approximately all energy is pumped in very small volume. keywords: anode; current; discharge; energy; plasma; radiation; range; wavelength cache: ap-1727.pdf plain text: ap-1727.txt item: #390 of 1656 id: ap-1729 author: Caniello, Roberto; Vassallo, Espedito; Cremona, Anna; Grosso, Giovanni; Dellasega, David; Canetti, Maurizio; Miorin, Enrico title: Growth and Physical Structure of Amorphous Boron Carbide Deposited by Magnetron Sputtering on a Silicon Substrate with a Titanium Interlayer date: 2013 words: 2992 flesch: 63 summary: Anodization of Ti thin film deposited on ITO. Langmuir 25(1):509–514, 2009. Filament activated chemical vapor deposition of boron carbide coatings. keywords: boron; carbide; coatings; films; structure; substrate cache: ap-1729.pdf plain text: ap-1729.txt item: #391 of 1656 id: ap-1731 author: Cech, Jan; Hanusova, Jana; Stahel, Pavel; Slavicek, Pavel title: Diffuse Coplanar Surface Barrier Discharge in Nitrogen: Microdischarges Statistical Behavior date: 2013 words: 2281 flesch: 55 summary: From the presented data the tendency is that the substantial number of microdischarges (identi- fied as discharge current peaks) do not form new mi- crochannels but rather prolongate or branch existing discharge microchannels. In past decades the importance of barrier discharges as the sources of non-equilibrium plasmas for material processing has raised [3]. keywords: current; discharge; half; input; period; voltage cache: ap-1731.pdf plain text: ap-1731.txt item: #392 of 1656 id: ap-1733 author: Cherednychenko, Tatyana N.; Garkusha, Igor E.; Chebotarev, Vladimir V.; Solyakov, Dmytro G.; Petrov, Yuriy V.; Ladygina, Maryna S.; Eliseev, Dmytro V.; Chuvilo, Alexander A. title: Local Magnetohydrodynamic Characteristics of the Plasma Stream generated by MPC date: 2013 words: 1735 flesch: 62 summary: The spatial distributions of the electric current in plasma stream for the second operation mode; a) 6 µs, b) 10 µs. Figure 5. Discharge characteristics and dynamics of compressive plasma streams generated by a compact magnetoplasma compressor. keywords: current; plasma; plasma stream; stream cache: ap-1733.pdf plain text: ap-1733.txt item: #393 of 1656 id: ap-1735 author: Cikhardt, Jakub; Klír, Daniel; Kubeš, Pavel; Kravárik, Josef; Rezác, Karel; Šíla, Ondrej; Shishlov, Alexander V.; Labetsky, Alexey Yu. title: The Construction of the Fast Resistive Bolometer for a SXR Measurement on the GIT-12 Facility date: 2013 words: 2764 flesch: 62 summary: Introduction The ohmic bolometer is based on the principle of trans- formation of radiated energy into thermal energy. During the stagnation of the dense neon gas-puff, the most of kinetic energy of the Z-pinch is radiating in neon K-shell lines (hν ∼= 0.9÷1.4 keV) keywords: bolometer; current; energy; foil; gas; time cache: ap-1735.pdf plain text: ap-1735.txt item: #394 of 1656 id: ap-1737 author: Cutroneo, Mariapompea; Torrisi, Lorenzo; Ando’, Lucio; Cavallaro, Salvatore; Ullschmied, Jiri; Krasa, Josef; Margarone, Daniele; Velyhan, Andreji; Pfeifer, Miroslav title: Thomson Parabola Spectrometer for Energetic Ions Emitted from Sub-ns Laser Generated Plasmas date: 2013 words: 2588 flesch: 57 summary: Several homogeneous Au samples ranging in thickness from 0.6 to 50 mi- crons were irradiated at the same experimental and geometrical conditions for laser energy, focal position and magnetic-electric deflections. The lowermost parabola corresponds to the deflected protons, while the other parabolas corresponds to Au ions with high charge states. keywords: charge; energy; ion; ions; laser; plasma; state cache: ap-1737.pdf plain text: ap-1737.txt item: #395 of 1656 id: ap-1739 author: Fantova, Vladyslava; Bujaček, Karol; Kříha, Vítězslav; Julák, Jaroslav title: Inactivation of Candida albicans by Corona Discharge: The Increase of Inhibition Zones Area After Far Subsequent Exposition date: 2013 words: 2436 flesch: 55 summary: The overlapping of inhibition zones was observed for the distance of 1 cm, where it was difficult to distinguish particular inhibition zones, therefore this sample was excluded from the data processing. In case of the four times exposed agars, we observed significant differences in inhibition zone areas, dependent not only on the exposition site distances, but also on the exposition order. keywords: dish; expositions; inhibition; plasma; treatment; zone cache: ap-1739.pdf plain text: ap-1739.txt item: #396 of 1656 id: ap-174 author: Toman, J.; Černý, R. title: Thermal Conductivity of High Performance Concrete in Wide Temperature and Moisture Ranges date: 2001 words: 1800 flesch: 57 summary: There must exist one-to-one parametrizations x � x0(�, t), t � t0(�, x) where both x0 and t0 are monotonous functions. d � � � �� �I x t x tT � � �0 2 0 1, , . keywords: t t; t �; � d; � � cache: ap-174.pdf plain text: ap-174.txt item: #397 of 1656 id: ap-1741 author: Godun, Dmitriy V.; Bordusov, Sergey. V.; Dostanko, Anatoliy P. title: Systems of Electronic Overcurrent Protection in Pulse Power Generator Operating on Plasma Load date: 2013 words: 1685 flesch: 52 summary: The fast-acting complex protection system of pulse power generator is to ensure its blocking with the lapse of time not exceeding 100 nanoseconds. The application of fast-acting optical systems of data transfer in the composition of the current and thermal protection circuits allows to block the op- eration of pulse power generator with the lapse of time not exceeding 100 nanoseconds. keywords: current; power; protection; pulse; system cache: ap-1741.pdf plain text: ap-1741.txt item: #398 of 1656 id: ap-1743 author: Golosov, Dmitriy A.; Zavatskiy, Sergey M.; Melnikov, Sergey N. title: Physical and Electrical Properties of Yttria-Stabilized Zirconia Thin Films Prepared by Radio Frequency Magnetron Sputtering date: 2013 words: 3395 flesch: 64 summary: In the present paper, the authors report the syn- thesis of YSZ thin films by RF magnetron sputtering and report the results of studying the structural and electrical properties of YSZ films. In order to form the crystalline structure, the deposited films were annealed in air over a temperature range of 700 ÷ 900 ◦C. By XRD analysis it was established that as the deposited films were amorphous, they crystallized into a pure cubic structure as a result of annealing in air at a temperature above 820 ◦C. The electrophysical properties of YSZ films were investigated on structures such as Ni/YSZ/Pt/Ti/Si and Ni/YSZ/Si. keywords: films; structures; ysz cache: ap-1743.pdf plain text: ap-1743.txt item: #399 of 1656 id: ap-1745 author: Grigaitiene, Viktorija; Tamošiunas, Andrius; Valatkevičius, Pranas title: The Research on Atmospheric Pressure Water Vapour Plasma Generation and Application for the Destruction of Wastes date: 2013 words: 2454 flesch: 60 summary: Water vapour plasma torch in operation is showed in Fig. The chemical composition of water vapour plasma was established from the emission spectrum lines at 300 ÷ 800 nm range. keywords: flow; plasma; s−1; torch; vapour; water cache: ap-1745.pdf plain text: ap-1745.txt item: #400 of 1656 id: ap-1747 author: Gurin, Anatolii A.; Adamenko, Andrii S.; Adamenko, Stanislav V.; Kuzmenko, Mykola M. title: Proton- and -radiation of the Micro-Pinch with the Boron-Containing Target date: 2013 words: 4194 flesch: 63 summary: (This number is determined by counting the total number of proton tracks, de- flected by the magnetic field, directly in the magnet gap with an additional small 5mm aperture at the en- trance into magnet). In 5% of the shots, the presence of α-particles of energy up to 2MeV in the flux of fast ions is discovered by means of Thomson analyser equipped with track detectors. keywords: energy; ions; micro; particles; plasma; protons; spot; target; tracks cache: ap-1747.pdf plain text: ap-1747.txt item: #401 of 1656 id: ap-1749 author: Hlavatá, Lucie; Serbanescu, Rodica; Hlochová, Lenka; Kozáková, Zdenka; Krčma, František title: Pin Hole Discharge Creation in Na2SO4 Water Solutions date: 2013 words: 2370 flesch: 61 summary: Oscilloscope Tektronix TDS 1012B operating up to 100MHz with Tektronix P6015A high volt- age probe was used to obtain time resolved charac- teristics of discharge voltage and current with focus on the breakdown moment. Keywords: pin hole discharge, discharge in liquids, discharge breakdown. keywords: barrier; current; discharge; hole; pin; voltage cache: ap-1749.pdf plain text: ap-1749.txt item: #402 of 1656 id: ap-1751 author: Horký, Miroslav title: Instability Growth Rate Dependence on Input Parameters During the Beam–Target Plasma Interaction date: 2013 words: 2544 flesch: 69 summary: −Ω2 1ω 2 c1 − Ω1ω 2 c1k(G3) + ( ω2 c1k 2 c2 s1 + ω2 c1ω 2 p1 ) (G2)2 ] · [ Ω 4 2 + iΩ2 2ωc2ku2(G1)−Ω2 2 ( c2 s2k 2 + 1 ) −Ω2 2ω 2 c2 − Ω2ω 2 c2ku2(G3) + ( ω2 c2k 2 c2 s2 + ω2 c2 ) (G2)2 ] − [ ω2 p1 ( Ω 2 1 − ω2 c1(G2)2 )] · [ Ω 2 2 − ω2 c2(G2)2 ] = 0, (5) where we denoted G1 = (cos θB sinϕ sin θk), G2 = (cosϕ sin θk sin θB + cos θk cos θB), G3 = (cos2 θB cosϕ sin θk − cos θB cos θk sin θB), Ω1 = ω − k cosϕ sin θk, Ω2 = ω − ku2 cosϕ sin θk. [ iF (0) α · eB mα + ( c2 sαk 2 + ω2 pα ) k · eB k2 ]} − 2∏ α=1 ω2 pα k2 [ Ω2 αk 2 − ω2 cα (eB · k)2 ] = 0, (3) where Ωα = ω − k · u(0) α , (4) ωcα is the cyclotron frequency, F(0) α is the Lorentz magnetic force, eB is the unit vector in the direc- tion of magnetic field and csα is the sound velocity. keywords: dependence; parameters; results cache: ap-1751.pdf plain text: ap-1751.txt item: #403 of 1656 id: ap-1753 author: Jakubova, Ivana; Senk, Josef; Laznickova, Ilona title: The Influence of Nitrogen in Ar+N2 Mixture on Parameters of High-Temperature Device with Electric Arc date: 2013 words: 4367 flesch: 60 summary: Similarly, Figure 7 includes the data measured for 1.6 and 8% for variant B. Com- paring the efficiency of the device in both configura- tions, clearly better efficiency at the output of the an- ode channel for configuration B compared to configu- ration A is deteriorated by higher power loss of reac- tor 1 in variant B. Conclusions can be useful for the design of high temperature devices operating with argon/nitrogen mixture. keywords: anode; arc; device; nitrogen; power cache: ap-1753.pdf plain text: ap-1753.txt item: #404 of 1656 id: ap-1755 author: Kortanek, Jiri; Kubes, Pavel title: Calculation of the Inductance of Plasma Column at PF-1000 Device with Assumed Current Distribution date: 2013 words: 2073 flesch: 68 summary: Inductance of shots No. 9011 and No. 9013 using plasma border detection. These constants are set for the borders to follow the places where we see a sharp rise or drop in plasma density. keywords: column; current; inductance; plasma; shot cache: ap-1755.pdf plain text: ap-1755.txt item: #405 of 1656 id: ap-1757 author: Lee, Won-Ho; Lee, Jong-Chul title: Atmospheric Argon Free burning Arcs with a Simplified Unified Model Using CFD-Arc Modeling date: 2013 words: 2420 flesch: 60 summary: The present results for 200A, com- pared with those of [3, 11] given in brackets, were maximum arc temperature 24 300K (23 700K), max- imum axial velocity 500m/s (500m/s) and arc volt- age 10.5V (12.9V). Free burning arcs, where the work piece acts as an anode, are frequently used for a number of applications. keywords: anode; arc; arcs; burning; plasma; temperature cache: ap-1757.pdf plain text: ap-1757.txt item: #406 of 1656 id: ap-1759 author: Makhlaj, Vadym A.; Garkusha, Igor E.; Aksenov, Nikolay N.; Chuvilo, Alexander A.; Landman, Igor S. title: High-Speed Monitoring of Dust Particles in ITER ELMs Simulation Experiments with QSPA Kh-50 date: 2013 words: 2483 flesch: 62 summary: It is interesting to compare the results of QSPA Kh-50 plasma exposures with performed ex- periments on erosion product monitoring in QSPA-T facility [3, 1]. The main parameters of QSPA plasma streams were as follows: ion impact energy about 0.4 ÷ 0.6 keV, the maximum plasma pressure 3.2 bar, and the plasma stream diameter about 18 cm. keywords: dust; heat; particles; plasma; qspa; surface; tungsten cache: ap-1759.pdf plain text: ap-1759.txt item: #407 of 1656 id: ap-176 author: Vognar, M.; Šimáně, Č.; Chvátil, D. title: Faraday Cup for Electron Flux Measurements on the Microtron MT 25 date: 2001 words: 2370 flesch: 57 summary: AP1_01.vp © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 11 Acta Polytechnica Vol. 41 No.1/2001 1 Introduction The study of electron induced radiation effects requires a good knowledge of the value of electron flux density during irradiation. Keywords: microtron, Faraday cup, electron beams, electron flux measurement Fig. keywords: beam; cup; electron; faraday; faraday cup; window cache: ap-176.pdf plain text: ap-176.txt item: #408 of 1656 id: ap-1761 author: Matějíček, Jiří title: Materials for Fusion Applications date: 2013 words: 11523 flesch: 54 summary: Design requirements for plasma facing materials in ITER. Interactions with Hydrogen Isotopes The interaction of fusion materials with hydrogen iso- topes is important from the point of view of the effects on materials properties and behavior, as well as for the fuel balance. keywords: components; conductivity; demo; energy; et al; facing; fusion; heat; hydrogen; irradiation; iter; materials; neutron; nucl; plasma; properties; reactor; surface; temperature; tritium; tungsten; wall cache: ap-1761.pdf plain text: ap-1761.txt item: #409 of 1656 id: ap-1763 author: Olszewski, Serge; Lisitchenko, Tamara; Yukhymenko, Vitalij title: Long-Lived Plasma Process, Created by Impulse Discharge in Micro-Disperse Droplet Environment date: 2013 words: 3818 flesch: 63 summary: Photo of plasma processes in micro-disperse droplet environment, a) spark discharge between metal electrodes, b) sliding discharge along inside surface working vessel between high-voltage electrode and wa- ter surface, c) long-lived plasma process with spectral properties different from the previous discharges types. The duration current impulse of spark discharge was ≤ 10 µs. Fig. keywords: discharge; drops; field; liquid; plasma; process; spark; time cache: ap-1763.pdf plain text: ap-1763.txt item: #410 of 1656 id: ap-1765 author: Petit, Jean P.; Dore, Jean C. title: Velikhov Electrothermal Instability Cancellation by a Modification of Electrical Conductivity Value in a Streamer by Magnetic Confinement date: 2013 words: 2660 flesch: 60 summary: Theoretical analysis of shock wave anihilation with MHD force field. Shock wave annihilation by MHD action in supersonic flow. keywords: instability; international; mhd; petit; shock; value; velikhov cache: ap-1765.pdf plain text: ap-1765.txt item: #411 of 1656 id: ap-1767 author: Píchal, Jan; Klenko, Julia title: Positioning of the Precursor Gas Inlet in an Atmospheric Dielectric Barrier Reactor, and its Effect on the Quality of Deposited TiOx Thin Film Surface date: 2013 words: 3175 flesch: 61 summary: We used the plasma enhanced chemical vapour deposition (PECVD) method applying atmospheric dielectric barrier discharge (ADBD) plasma for TiOx thin films deposition, employing titanium isopropoxide (TTIP) and oxygen as reactants, and argon as a working gas. The XPS peak positions were referenced at the aliphatic carbon component at 285.0 eV. Due to inadequate equipment we were unfortunately not able to clean the film profile by sput- tering and perform XPS profile tests, so our research had to focus on film surface tests only. keywords: deposition; film; plasma; reactor; slm; surface; ttip cache: ap-1767.pdf plain text: ap-1767.txt item: #412 of 1656 id: ap-1769 author: Šíla, Ondrej; Kubeš, Pavel; Kravárik, Josef; Rezác, Karel; Klír, Daniel; Cikhardt, Jakub title: Estimation of Amount of Scattered Neutrons at Devices PFZ and GIT-12 by MCNP Simulations date: 2013 words: 2041 flesch: 63 summary: Neutron energy spectrum in place of three scintillation probes in PFZ experimental setup We calculated neutron energy spectrum in three places where we put probes in our experimental setup. For estimating of neutron energy we use time-of- flight method. keywords: device; figure; neutrons; pfz; setup cache: ap-1769.pdf plain text: ap-1769.txt item: #413 of 1656 id: ap-1771 author: Šmíd, Michal; Antonelli, Luca; Renner, Oldoich title: X-ray Spectroscopic Characterization of Shock-Ignition-Relevant plasmas date: 2013 words: 2417 flesch: 54 summary: Keywords: hot electrons, shock ignition, laser-produced plasma, X-ray spectroscopy, Kα radiation. Found values of plasma temperature 690 ± 10 eV, electron density 3 × 1022 cm−3 and the effective energy of hot electrons 45 ± 20 keV demonstrate the potential of X-ray methods in the characterization of the shock ignition environmental conditions. keywords: electrons; laser; plasma; ray; shock; target cache: ap-1771.pdf plain text: ap-1771.txt item: #414 of 1656 id: ap-1773 author: Tichy, David; Hajkova, Pavlina title: Modification of Composite Material Fillers by Atmospheric Plasma Discharge date: 2013 words: 2521 flesch: 55 summary: This work is focused on the observation of the influence of cold atmospheric dielectric barrier discharge (DBD) on a modification of textile samples. Textile samples The modified samples were made from a commercial E-glass. keywords: effect; modification; plasma; sample; surface; textile; wettability cache: ap-1773.pdf plain text: ap-1773.txt item: #415 of 1656 id: ap-1775 author: Torrisi, Lorenzo; Cavallaro, Salvatore; Cutroneo, Mariapompea; Krasa, Josef title: Nuclear Fusion Effects Induced in Intense Laser-Generated Plasmas date: 2013 words: 2823 flesch: 55 summary: Deuterium ions at kinetic energies above 4MeV have been measured by using ion collectors and SiC detectors in time-of-flight configuration. Thus protons and deuterium ions emitted from primary and sec- ondary targets, can be detected and their kinetic energy measured. keywords: deuterium; d−d; energy; fusion; ions; laser; plasma; target cache: ap-1775.pdf plain text: ap-1775.txt item: #416 of 1656 id: ap-1777 author: Turčičová, Hana; Huynh, Jaroslav title: Stimulated Raman Backscattering in Plasma — a Promising Tool for the Generation of Ultra-High Power Laser Beams date: 2013 words: 2790 flesch: 65 summary: Keywords: stimulated Raman scattering, laser plasma, high intensity lasers. In the last fifteen years again a new potentially revolutionary technique has emerged from theoretical studies of wave instabilities in laser plasma, which presents a possibility of the production of intense and ultrashort laser pulses even without the large compres- sors. keywords: amplification; beam; laser; plasma; pulse; pump; raman; seed cache: ap-1777.pdf plain text: ap-1777.txt item: #417 of 1656 id: ap-1779 author: Tutyk, Valery A.; Ovcharuk, Anatoliy N.; Gasik, Michail I.; Maslenikov, Dmitriy V. title: Ignition Features of Plasma-Beam Discharge in Gas-Discharge Electron Gun Operation date: 2013 words: 3273 flesch: 64 summary: The mea- surements of concentration of PBD plasma electrons were carried out under conditions of increasing pres- sure and they showed that electrons concentration was within the range of ne ≈ 1010 ÷ 1011 cm−3. where νen is collision frequency of plasma electrons with neutrals, ωpe = 5.64 × 104n 1/2 e is Langmuire electron frequency of plasma. keywords: beam; discharge; electron; gas; ignition; pbd; plasma; vacuum cache: ap-1779.pdf plain text: ap-1779.txt item: #418 of 1656 id: ap-178 author: Šimáně, Č.; Vognar, M.; Chvátil, D. title: Some Aspects of Profiling Electron Fields for Irradiation by Scattering on Foils date: 2001 words: 3491 flesch: 71 summary: � ��0 2 137� �Ze hc Z � � � � � � � �g x E x E x sZx AE� � � � 0 01 0153 19 45. MeV � � � ��1 2 1 2 0 22� K f x mc � x = foil thickness keywords: beam; electron; scattering; � � cache: ap-178.pdf plain text: ap-178.txt item: #419 of 1656 id: ap-1781 author: Velardi, Luciano; Side, Domenico Delle; Marco, Massimo De; Nassisi, Vincenzo title: Emittance Characterization of Ion Beams Provided by Laser Plasma date: 2013 words: 2691 flesch: 66 summary: Laser ion sources offer the possibility to obtain ion beams useful for particle accelerators. Keywords: LIS source, ion beam, emittance. keywords: beams; emittance; ion; laser; plasma; voltage cache: ap-1781.pdf plain text: ap-1781.txt item: #420 of 1656 id: ap-1785 author: Hubata-Vacek, Václav; Kukal, Jaromír; Rusina, Robert; Buncová, Marie title: Fractal Dimension Estimation in Diagnosing Alzheimer’s Disease date: 2013 words: 1892 flesch: 70 summary: Dimension estimates via various entropy estimates. Estimated entropies from a limited data set are always biased. keywords: entropy; estimates cache: ap-1785.pdf plain text: ap-1785.txt item: #421 of 1656 id: ap-1787 author: Hübner, Jakub; Vrba, Pavel title: A Study of Coherent Radiation Generated in an Ablative Capillary Discharge date: 2013 words: 5635 flesch: 71 summary: For capillary parameters N0 = 3 · 1017 cm−3, r0 = 0.6mm, Imax = 35 kA, t2 = 310 ns, carbon inner filling, and the alumina wall material. For capillary parameters N0 = 3 · 1017 cm−3, r0 = 0.6mm, Imax = 50 kA, t2 = 310 ns, carbon inner filling, and alumina wall material. keywords: capillary; gain; imax; time cache: ap-1787.pdf plain text: ap-1787.txt item: #422 of 1656 id: ap-1789 author: Kutilek, Patrik; Viteckova, Slavka; Svoboda, Zdenek title: Characterization of Human Gait using Fuzzy Logic date: 2013 words: 3990 flesch: 59 summary: Fuzzy rule based expert system We can use fuzzy sets to evaluate the angle-angle di- agrams (cyclograms). Fuzzy sets of variables and linguistic expressions based on the area and the inclination angle of the cyclogram. toolboxes keywords: angle; cyclogram; gait; inclination; speed; system; type; walking cache: ap-1789.pdf plain text: ap-1789.txt item: #423 of 1656 id: ap-1791 author: Tylova, Lucie; Kukal, Jaromir; Vysata, Oldrich title: Predictive Models in Diagnosis of Alzheimer’s Disease from EEG date: 2013 words: 2344 flesch: 67 summary: Keywords: Alzheimer’s disease, EEG, linear predictive model, quasi-stationarity, robust statistics, multiple testing, FDR. Predictive model Let m be the length of a segment. keywords: disease; eeg; model; predictive cache: ap-1791.pdf plain text: ap-1791.txt item: #424 of 1656 id: ap-1793 author: Temmerman, Gregory De; Bystrov, Kirill; Liu, Feng; Liu, Wei; Morgan, Thomas; Tanyeli, Irem; Berg, Miranda van den; Xu, Haiyan; Zielinski, Jakub title: Plasma–Surface Interactions Under High Heat and Particle Fluxes date: 2013 words: 4291 flesch: 61 summary: High-resolution SEM images of helium- induced nanostructures formed on (a) tungsten and (b) molybdenum surfaces after high flux plasma exposure. The linear plasma devices at FOM can generate plasma fluxes of up to 1025 m−2 s−1 in DC opera- tions and up to 1026 m−2 s−1 for ms durations when the plasma source is pulsed. keywords: conditions; fluxes; fusion; heat; nucl; particle; plasma; psi; surface; tungsten cache: ap-1793.pdf plain text: ap-1793.txt item: #425 of 1656 id: ap-1795 author: Hladík, Jakub; Lórencz, Róbert; Šimeček, Ivan title: Clock Math — a System for Solving SLEs Exactly date: 2013 words: 2978 flesch: 60 summary: As we now have a working system, we would like to proceed to: • add support for both single and double precision for matrix elimination, as the β vector module count and GPU performance may differ; • add support for larger matrices than 4096× 4096 – optimize SMP shared memory usage; • add support for automatic kernel group size tuning for larger matrices, as the group size lowers the mem- ory access time on different GPUs/architectures; • examine the modulus operation performance across different GPU architectures and further opti- mize the SAXPY, respectively DAXPY functions (modm); • utilize OpenMPI library to add cluster support; • adjust and run the solver on our university STAR cluster to test AMD’s OpenCL CPU implementa- tion. The goal of matrix scaling is to adjust all the floating-point numbers of the matrix to their corresponding integer versions. keywords: equations; gpu; linear; matrix; solving; system; vector cache: ap-1795.pdf plain text: ap-1795.txt item: #426 of 1656 id: ap-1797 author: Cartarius, Holger; Dast, Dennis; Haag, Daniel; Wunner, Günter; Eichler, Rüdiger; Main, Jorg title: Stationary and Dynamical Solutions of the Gross-Pitaevskii Equation for a Bose-Einstein Condensate in a PT symmetric Double Well date: 2013 words: 6445 flesch: 64 summary: This is always fulfilled for PT symmetric wave functions. In this article, we will solve the Gross-Pitaevskii equation of such a system and show that it indeed supports PT symmetric solutions. keywords: equation; phys; pitaevskii; potential; solutions; symmetric; time; wave cache: ap-1797.pdf plain text: ap-1797.txt item: #427 of 1656 id: ap-1799 author: Dey, Sanjib; Fring, Andreas title: The Two-dimensional Harmonic Oscillator on a Noncommutative Space with Minimal Uncertainties date: 2013 words: 1550 flesch: 70 summary: |00〉, a†i |n1n2〉 = √ ni + 1 ∣∣(n1 + δi1)(n2 + δi2) 〉 , ai|00〉 = 0, ai|n1n2〉 = √ ni ∣∣(n1 − δi1)(n2 − δi2) 〉 , (9) for i = 1, 2, such thatH2D ho |nl〉 = E (0) nl |nl〉. Keywords: noncommutative space, non-Hermitian operators, 2D-systems. keywords: oscillator; phys cache: ap-1799.pdf plain text: ap-1799.txt item: #428 of 1656 id: ap-180 author: Kopáčková, M. title: Critical Length of a Column in View of Bifurcation Theory date: 2001 words: 3387 flesch: 62 summary: Comparing the coefficients corresponding to the same power tn, n = 1, 2, 3, …, we get an infinite system of equations, three of which are written below � � � ��� � �v s s v s0 0 0 0� , (21) � � � � � ��� � � �u s s u s v s2 0 2 0� � , (22) � � � ��� � � � � � � �� � � �u s s u s s v v u v3 0 3 0 0 2 0 3 0 3 2 6 � � � � � . u0 is a solution of � � � ��� � �u s s u s�0 0, representing together with v0 a fundamental system of solu- tions to the above equation. keywords: s s; s �; � d; � sin; � u; � � cache: ap-180.pdf plain text: ap-180.txt item: #429 of 1656 id: ap-1801 author: Exner, Pavel; Barseghyan, Diana title: Spectral Analysis of Schrödinger Operators with Unusual Semiclassical Behavior date: 2013 words: 5366 flesch: 70 summary: Schrödinger operators in cusps with non-trivial geometry In the second part of the paper we shall discuss Schrödinger type operators HΩ = −∆Ω D In this paper we discuss several examples of Schrödinger operators describing a particle confined to a region with thin cusp-shaped ‘channels’, given either by a potential or by a Dirichlet boundary; we focus on cases when the allowed phase space is infinite but the operator still has a discrete spectrum. keywords: operator cache: ap-1801.pdf plain text: ap-1801.txt item: #430 of 1656 id: ap-1803 author: Hammou, Amine B. title: Generalized Continuity Equation for Quasi-Hermitian Hamiltonians date: 2013 words: 1593 flesch: 68 summary: Using a quasi-Hermitian toy model of discrete delta function potential, it was shown that the reflection and transmission coefficients computed using this current obey the unitarity relation. By an appropriate mod- ification of the inner product on the Hilbert space, quasi-Hermitian operators can be made Hermitian [8]. keywords: potential; relation cache: ap-1803.pdf plain text: ap-1803.txt item: #431 of 1656 id: ap-1805 author: Himmel, Martin title: On the Solvability of Some Partial Differential Inequality date: 2013 words: 4808 flesch: 67 summary: Thus, it is possible to interpret integrating factors and Dulac functions as invariant functions to certain cofactors: an inte- grating factor is nothing but an invariant function having cofactor k = −divX (16) and a Dulac function is an invariant function with cofactor k = − divX + 1 f · g, (17) The multiplier B ∈W 1,p(Ω,R) is called Dulac function of the planar dynamical system (1) in Ω ⊆ D if and only if there is a real-valued continuous function g > 0 having a positive sign in Ω except on a set of Lebesgue measure zero such that the equation div(BX) keywords: differential; dulac; function; system; vector cache: ap-1805.pdf plain text: ap-1805.txt item: #432 of 1656 id: ap-1809 author: Kleefeld, Frieder title: Complex Covariance date: 2013 words: 5771 flesch: 67 summary: [38] being the vacuum speed of light and set γ = γ (See the discussion of Eq. 297 Frieder Kleefeld Acta Polytechnica • Option 2: Choose c and v to be (anti)parallel in the complex plane, i.e., c = ±|c| · v |v| = ± ∣∣ c v ∣∣ · v with |c| = 299792458m/s [38] being the vacuum speed of light, and set γ = γ (See the discussion of Eq. (4.14)!). keywords: complex; phys; space cache: ap-1809.pdf plain text: ap-1809.txt item: #433 of 1656 id: ap-1811 author: Leach, P. G. L. title: Emmy Noether and Linear Evolution Equations date: 2013 words: 2938 flesch: 59 summary: These each have an equivalent in the Schrödinger Equation corresponding to the Lagrangian and by extension to linear evolution equations in general. The Black-Scholes-Merton Equation is but one of a number of evolution equations to be found in Financial 1One would hope that this initial condition would not apply in financial matters! keywords: equation; evolution; noether; symmetries; symmetry cache: ap-1811.pdf plain text: ap-1811.txt item: #434 of 1656 id: ap-1813 author: Mostafazadeh, Ali title: Spectral Singularities do not Correspond to Bound States in the Continuum date: 2013 words: 781 flesch: 65 summary: Spectral singularities appear for generic complex scattering potentials, while scattering potentials that involve bound states in the continuum are ex- tremely rare. Keywords: spectral singularity, bound state in continuum, resonance. keywords: continuum; phys cache: ap-1813.pdf plain text: ap-1813.txt item: #435 of 1656 id: ap-1815 author: Paseka, Jan; Riečanová, Zdenka title: Inherited Properties of Effect Algebras Preserved by Isomorphisms date: 2013 words: 5524 flesch: 75 summary: [18] Riečanová Z., Zajac M., Hilbert space effect-representations of effect algebras, Reports of Mathematical Physics, 70 (2012), 283–290. 313 http://dx.doi.org/10.1007/BF02283036 http://dx.doi.org/10.1088/1751-8113/42/18/185206 http://dx.doi.org/10.1088/1751-8113/42/18/185206 doi: 10.1007/s00500-010-0561-7.DOI: 10.1007/s00500-010-0561-7 doi: 10.1007/s10701-011-9573-0 Acta Polytechnica 53(3):308–313, 2013 1 Introduction 2 Basic definitions and some known facts 2.1 Effect algebras and generalized effect algebras 2.2 Topologies on ordered sets 2.3 Morphisms, embeddings and isomorphisms of effect algebras 3 Basic properties of isomorphisms of effect algebras and operator representations 4 Some properties of operator effect algebras that need not be preserved by effect algebraic isomorphisms Acknowledgements References Keywords: effect algebras; operator effect algebras; isomorphisms; operator representations of effect algebras.. keywords: algebras; effect cache: ap-1815.pdf plain text: ap-1815.txt item: #436 of 1656 id: ap-1817 author: Riečanová, Zdenka; Zajac, Michal title: Intervals in Generalized Effect Algebras and their Sub-generalized Effect Algebras date: 2013 words: 2290 flesch: 67 summary: [10] Polakovič, M.: Generalized effect algebras of bounded positive operators defined on Hilbert spaces, Reports on Mathematical Physics, 68 (2011), 241–250. Recall that if (E;⊕, 0, 1) is an effect algebra ((E;⊕, 0) is a generalized effect algebra) then a subset G 6= ∅ such that 1 ∈ G (0 ∈ G respectively) is a sub-effect algebra (sub-generalized effect algebra) of E iff 314 http://ctn.cvut.cz/ap/ vol. keywords: algebra; effect cache: ap-1817.pdf plain text: ap-1817.txt item: #437 of 1656 id: ap-1819 author: Znojil, Miloslav title: Non-Hermitian Star-shaped Quantum Graphs date: 2013 words: 3135 flesch: 63 summary: [4] J. Železný, The Krein-space theory for non-Hermitian PT-symmetric operators (MSc thesis, FNSPE CTU, 2011); [5] P. Siegl, Non-Hermitian quantum models, indecomposable representations and coherent states quantization (PhD thesis, Univ. This being said, one of the most efficient ways of ad- dressing these technical challenges has been described in [11] and generalized, to nontrivial graphs, in its sequel [12]. keywords: graphs; phys; quantum; star; znojil cache: ap-1819.pdf plain text: ap-1819.txt item: #438 of 1656 id: ap-182 author: Fořt, I.; Medek, J.; Ambros, F. title: Erosion Wear of Axial Flow Impellersin a Solid-liquid Suspension date: 2001 words: 3731 flesch: 64 summary: � � , rolled brass, � � �15°, 45°� (4a) � �� � �k 4 73 631. � � , construction steel, � � �20°, 45°� (4b) characterizes the relation between the erosion wear of the impeller blade and the corresponding (axial) component of the mean velocity in the discharge stream leaving a pitched blade impeller keywords: blade; erosion; impeller; process; � � cache: ap-182.pdf plain text: ap-182.txt item: #439 of 1656 id: ap-1823 author: Beňo, Jaroslav; Hilar, Matouš title: Steel Fibre Reinforced Concrete for Tunnel Lining – Verification by Extensive Laboratory Testing and Numerical Modelling date: 2013 words: 5506 flesch: 64 summary: Segment bending Segments were also tested under a load perpendicular to the longitudinal tunnel axis (Fig. 5b). Afterwards, SFRC segments were produced and then tested at the Klokner Institute of CTU. keywords: concrete; fibres; lining; segments; sfrc; sfrc segments; steel; strength; tests cache: ap-1823.pdf plain text: ap-1823.txt item: #440 of 1656 id: ap-1825 author: Bodlák, Martin; Jarý, Vladimír; Konorov, Igor; Mann, Alexander; Nový, Josef; Paul, Severine; Virius, Miroslav title: Developing Control and Monitoring Software for the Data Acquisition System of the COMPASS Experiment at CERN date: 2013 words: 3172 flesch: 60 summary: System stability. From the functionality point of view, the DATE package provides data flow control, event building, data quality monitoring, event sampling, information reporting, interactive configuration, and run control. keywords: compass; control; data; dim; experiment; message; server; software; system cache: ap-1825.pdf plain text: ap-1825.txt item: #441 of 1656 id: ap-1827 author: Holub, Štepán title: On an Algorithm for Multiperiodic Words date: 2013 words: 2105 flesch: 79 summary: This can be succinctly stated as: FW(P, k)[i] =  FW(Q, k −m)[i mod m] if (i mod m) < k −m; If k ≤ m, then Lemma 2 gives FW(P, k) = 0 · 1 · · · (k− 1). keywords: word cache: ap-1827.pdf plain text: ap-1827.txt item: #442 of 1656 id: ap-1829 author: Kuráž, Michal; Mayer, Petr title: Algorithms for Solving Darcian Flow in Structured Porous Media date: 2013 words: 8277 flesch: 59 summary: preconditioner in the context of the conjugate gradient method for normal equations forms ATDTDA, and this form is not commonly used. However, it has been found that this standard method is highly efficient for solv- ing the systems of linear equations that arise from numerical approximation of the Richards equation. keywords: condition; equation; mass; matrix; method; problem; richards; richards equation; solution; time cache: ap-1829.pdf plain text: ap-1829.txt item: #443 of 1656 id: ap-1831 author: Kurian, Matúš; Krlín, Ladislav; Cahyna, Pavel; Pánek, Radomír title: Particle Dynamics in the RMP Ergodic Layer under the Influence of Edge Plasma Turbulence date: 2013 words: 3297 flesch: 58 summary: Since this procedure can be performed for particles of various mass, it is possible to compare the effect of electrostatic perturbation on heavy and light particles. The lower threshold of the effect of electrostatic perturbation on lithium is at 0.1-0.5V, and this matches well with the results obtained for carbon ions and protons. keywords: diffusion; effect; particles; perturbation; potential; system; trajectories cache: ap-1831.pdf plain text: ap-1831.txt item: #444 of 1656 id: ap-1833 author: Kutílek, Patrik; Vítečková, Slávka; Svoboda, Zdeněk; Hejda, Jan title: Application of Portable Force Platforms Equipped with a Device for Measuring Position and Orientation date: 2013 words: 4623 flesch: 54 summary: We have designed and tested a new universal way to study the forces under the feet based on force platforms equipped with a device for measuring position and orientation. This technique uses force platforms to measure the forces exerted by the subject’s feet [4]. keywords: cop; cop position; force; force platforms; orientation; platforms; position; system cache: ap-1833.pdf plain text: ap-1833.txt item: #445 of 1656 id: ap-1835 author: Michalec, Ivan; Marônek, Milan title: Adhesive Bonding of Aluminium Alloy A5754 by Epoxy Resins date: 2013 words: 1658 flesch: 64 summary: Results of shear tests of bonded joints. even after the heating was stopped. [5] Beevers, A., Steidler, S. M., Duordola, J., Coackley, M.: Analysis of stiffness of adhesive joints in car bodies. keywords: adhesive; aluminium; hysol; joints cache: ap-1835.pdf plain text: ap-1835.txt item: #446 of 1656 id: ap-1837 author: Mikeš, Jan; Efmertová, Marcela; Szedenik, Norbert; Kutáč, Jirí title: The Impact of Active Conductors on Czech and Hungarian Lightning Protection Legislation date: 2013 words: 5901 flesch: 59 summary: Development of lightning rod for lightning protection standard in Europe, especially in Czech lands. 3, H-1111 Budapest, Budapest, Hungary c Union of Court Experts, expert in the field of electrical engineering and electroenergetics, specialization in lightning protection and surge phenomena, Prague, Czech Republic ∗ corresponding author: mikes.jan@fel.cvut.cz Abstract. keywords: buildings; coll; conductors; czech; decree; lightning; lightning protection; protection; standards; technical; čsn cache: ap-1837.pdf plain text: ap-1837.txt item: #447 of 1656 id: ap-1839 author: Német, Miroslav; Mihaliková, Mária title: The Effect of Strain Rate on the Mechanical Properties of Automotive Steel Sheets date: 2013 words: 2201 flesch: 74 summary: Dynamic tensile testing of sheet steels is growing in importance. High speed tensile test of steel sheets for the stress-strain curve at the intermediate strain rate. keywords: dynamic; steel; strain; strength; tensile cache: ap-1839.pdf plain text: ap-1839.txt item: #448 of 1656 id: ap-184 author: Šimáně, Č.; Vognar, M.; Kříž, J.; Němec, V. title: A Small Transfer and Distribution System for Liquid Nitrogen date: 2001 words: 1336 flesch: 62 summary: The return of the plunger during the intake period is assured © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 29 Acta Polytechnica Vol. 41 No.1/2001 A Small Transfer and Distribution System for Liquid Nitrogen Č. Šimáně, M. Vognar, J. Kříž, V. Němec A system for remotely controlled filling of small Dewars with liquid nitrogen from a central storage Dewar vessel is described, consisting of a plunger type pump with an electromechanical driver and electromechanical ball type valves for distribution of liquid nitrogen. Keywords: liquid nitrogen, transfer system, solenoid pump, solenoid valve, automatic level control. keywords: nitrogen; pump; valve cache: ap-184.pdf plain text: ap-184.txt item: #449 of 1656 id: ap-1841 author: Šulc, Radek; Svačina, Ondřej title: The Effect of Kaolin Concentration on Flock Growth Kinetics in an Agitated Tank date: 2013 words: 3403 flesch: 55 summary: Keywords: flocculation, flock growth, flock size, mixing, Rushton turbine, kaolin slurry, fractal geometry, image analysis. Theoretical background The dependence of flock size on flocculation time can be expressed by a simple empirical formula, taking into account flock breaking [5]: 1 df = Af log2(NtF) +Bf log(NtF) + keywords: dimension; flocculation; flock; fractal; kaolin; size; time cache: ap-1841.pdf plain text: ap-1841.txt item: #450 of 1656 id: ap-1843 author: Mihaliková, Mária; Német, Miroslav; Vojtko, Marek title: IMPACT OF STRAIN RATE ON MICROALLOYED STEEL SHEET BREAKING date: 2014 words: 1665 flesch: 61 summary: Keywords: strain rate, microalloyed steel, fracture surface. [5] Német, M., Mihaliková M.: The effect of strain rate on the mechanical properties of automotive steel sheets, Acta Polytechnica, 53 (4), 2013, p. 384–387. keywords: loading; material; rate; steel; strain cache: ap-1843.pdf plain text: ap-1843.txt item: #451 of 1656 id: ap-1847 author: Bodner, Mark; Chadzitaskos, Goce; Patera, Jiří; Tereszkiewitz, Agnieszka title: THE SHMUSHKEVICH METHOD FOR HIGHER SYMMETRY GROUPS OF INTERACTING PARTICLES date: 2013 words: 2337 flesch: 65 summary: [6] R. Marshak, E. Sudarshan, Introduction to Elementary Particles Physics, New York, Interscience Publishers, 1961 [7] R. V. Moody, J. Patera, General charge conjugation operators in simple Lie groups, J. Math. It is likely that practical exploitation of Shmushke- vich’s idea for higher groups and possibly representa- tions of much higher dimensions, will not proceed by spelling out the large number of channels for each case and counting the number of occurrences of each state in all the channels. keywords: group; representations; states cache: ap-1847.pdf plain text: ap-1847.txt item: #452 of 1656 id: ap-1851 author: Exner, Pavel; Lipovský, Jiří title: RESONANCES ON HEDGEHOG MANIFOLDS date: 2013 words: 8894 flesch: 69 summary: Resonance asymptotics The aim of this section is to say something about the asymptotic behaviour of the resolvent poles with re- spect to an increasing family of regions which cover in the limit the whole complex plane. Resolvent and scattering resonances are shown to coincide in this situation. keywords: asymptotics; case; function; hedgehog; manifold; quantum; resonances cache: ap-1851.pdf plain text: ap-1851.txt item: #453 of 1656 id: ap-1852 author: Gáliková, Veronika; Prešnajder, Peter title: COULOMB SCATTERING IN NON-COMMUTATIVE QUANTUM MECHANICS date: 2013 words: 4354 flesch: 73 summary: In [9] we gave an exact simple formula for the NC negative bound state energies, and in [10] we presented the full solution of the NC Coulomb problem. As the model is exactly solvable, we were able to find an exact formula for the NC Coulomb scattering matrix Sλj (E) in j-th partial wave. keywords: coulomb; matrix; non cache: ap-1852.pdf plain text: ap-1852.txt item: #454 of 1656 id: ap-1855 author: Hlavatý, Ladislav; Navrátil, Josef; Šnobl, Libor title: ON RENORMALIZATION OF POISSON–LIE T-PLURAL SIGMA MODELS date: 2013 words: 3502 flesch: 65 summary: The role of ambiguities in renormalization group equations of Poisson–Lie sigma models with truncated matrices of parameters is investigated. Two-dimensional Poisson–Lie σ-models are given by Manin triples generated by Abelian or solvable Lie algebras with Lie products keywords: group; lie; models; poisson; renormalization cache: ap-1855.pdf plain text: ap-1855.txt item: #455 of 1656 id: ap-1858 author: Chadzitaskos, Goce; Tolar, Jiří title: PROPOSAL OF NEW OPTICAL ELEMENTS date: 2013 words: 3241 flesch: 66 summary: the cylinder is assembled from single crystal strips made from various materials and cut along different planes, so that the mutual distances between the atomic planes at one end of each strip fulfill Bragg’s condition; (2.) Bent single crystal strips are fixed on the sides by brackets 3. keywords: crystal; planes; ray; strip cache: ap-1858.pdf plain text: ap-1858.txt item: #456 of 1656 id: ap-1859 author: Cheon, Taksu; Tanaka, Atushi; Turek, Ondřej title: EXAMPLES OF QUANTUM HOLONOMY WITH TOPOLOGY CHANGES date: 2013 words: 3304 flesch: 77 summary: Keywords: quantum graph, boundary condition, eigenvalue holonomy. Here we examine the influence of the topology of quantum graphs on spectral properties, taking inspi- ration from the works [1] and keywords: a(θ; c(θ; quantum cache: ap-1859.pdf plain text: ap-1859.txt item: #457 of 1656 id: ap-186 author: El-Hady, H. M. Abd; Grünwald, A.; Vlčková, K.; Zeithammerová, J. title: Lewatit S100 in Drinking Water Treatment for Ammonia Removal date: 2001 words: 1939 flesch: 61 summary: The objec- tive of our work is to treat drinking water spiked with NH4 + (10±0.5, 5±0.5 and 2±0.5) mg l�1, using Lewatit S100. Keywords: Lewatit S100, ion exchange, ammonia removal, drinking water. keywords: nh4; water cache: ap-186.pdf plain text: ap-186.txt item: #458 of 1656 id: ap-1860 author: Masáková, Zuzana; Pelantová, Edita title: ITINERARIES INDUCED BY EXCHANGE OF TWO INTERVALS date: 2013 words: 4804 flesch: 81 summary: This notion occurs in various con- texts such as return words, Abelian return words, or substitution invariance of the corresponding codings, i.e., Sturmian words. A characterization of Sturmian words by return words. keywords: interval; return cache: ap-1860.pdf plain text: ap-1860.txt item: #459 of 1656 id: ap-1863 author: Pošta, Severin; Havlíček, Miloslav title: NOTE ON VERMA BASES FOR REPRESENTATIONS OF SIMPLE LIE ALGEBRAS date: 2013 words: 4655 flesch: 79 summary: 4. Conclusions Problems of unified construction of Verma bases for other series of simple Lie algebras (namely orthogonal and symplectic) and of an effective determination of matrix elements in these cases are still open. Keywords: Verma basis, enveloping algebra, Lie algebra. keywords: algebras; bases; i−1; lie; math; representations; verma cache: ap-1863.pdf plain text: ap-1863.txt item: #460 of 1656 id: ap-1865 author: Riečanová, Zdenka; Janda, Jiří title: MAXIMAL SUBSETS OF PAIRWISE SUMMABLE ELEMENTS IN GENERALIZED EFFECT ALGEBRAS date: 2013 words: 4423 flesch: 70 summary: Further, let us investigate inter- vals in pairwise summable generalized effect algebras. In 1994, D. Foulis introduced al- gebraic structures called effect algebras. keywords: algebra; effect; effect algebra; pairwise cache: ap-1865.pdf plain text: ap-1865.txt item: #461 of 1656 id: ap-1866 author: Znojil, Miloslav title: NEW CONCEPT OF SOLVABILITY IN QUANTUM MECHANICS date: 2013 words: 7923 flesch: 64 summary: Non-Hermitian quantum models, indecomposable representations and coherent states quantization. The roots of the growth of popularity of the description of stable quantum systems using representations of observables which are non-Hermitian in an auxiliary Hilbert space H(F) may be traced back not only to the entirely abstract mathematical analyses of spectra of quasi-Hermitian operators [16] and of the operators which are self-adjoint in the so-called Krein spaces with indefinite metric [17] but also to the emergence of manageable non-Hermitian models in quantum field theory [18] or even in classical optics [19], etc. keywords: domain; hamiltonian; hermitian; hilbert; metric; model; phys; physical; quantum; space cache: ap-1866.pdf plain text: ap-1866.txt item: #462 of 1656 id: ap-1870 author: Levi, Decio; Winternitz, Pavel title: LIE GROUPS AND NUMERICAL SOLUTIONS OF DIFFERENTIAL EQUATIONS: INVARIANT DISCRETIZATION VERSUS DIFFERENTIAL APPROXIMATION date: 2013 words: 4383 flesch: 65 summary: As far as applications to the numerical solu- tions of differential equations are concerned, the idea, originally due to Dorodnitsyn [12, 13], is to start from the differential equation, its symmetry group G and the Lie algebra L of G, realized by vector fields. [24] rather than to “jet space” as for differential equations keywords: approximation; difference; differential; equations; group; invariant; order cache: ap-1870.pdf plain text: ap-1870.txt item: #463 of 1656 id: ap-1872 author: Smirnov, Yuri F.; Turbiner, Alexander title: gln+1 ALGEBRA OF MATRIX DIFFERENTIAL OPERATORS AND MATRIX QUASI-EXACTLY-SOLVABLE PROBLEMS date: 2013 words: 5821 flesch: 71 summary: +M22, E12 = x1∂2 +M12, E21 = x2∂1 +M21, E0 = k − x1∂1 − x2∂2, T− 1 = ∂1, T− 2 = ∂2, T+ 1 = x1(k − x1∂1 − x2∂2)− x1M11 − x2M12, T+ 2 = x2(k − x1∂1 − x2∂2)− x1M21 − x2M22. We also can call it a scalar representation, since the generators E11 = x1∂1, E22 = x2∂2, E12 = x1∂2, E21 = x2∂1, E0 = k − x1∂1 − x2∂2, T− 1 = ∂1, T− 2 = ∂2, T+ 1 = x1(k − x1∂1 − x2∂2), T+ 2 = x2(k − x1∂1 − x2∂2), (12) act on one-component spinors or, in other words, on scalar functions (see e.g. [5]). keywords: algebra; differential; generators; matrix; operators; representation cache: ap-1872.pdf plain text: ap-1872.txt item: #464 of 1656 id: ap-1874 author: Uhlmann, Armin title: THE NUMBER OF ORTHOGONAL CONJUGATIONS date: 2013 words: 2188 flesch: 70 summary: Later on, F. Herbut and M. Vujičić were able to clarify the structure of anti-linear normal oper- ators, [4], by proving that such a decomposition also exists for anti-linear normal operators. Wigner also discovered the struc- ture of anti-unitary operators, [12], in finite dimen- sional Hilbert spaces. keywords: anti; conjugations; hermitian; linear; skew cache: ap-1874.pdf plain text: ap-1874.txt item: #465 of 1656 id: ap-1876 author: Exner, Pavel title: FOREWORD: THREE QUARTERS A CENTURY date: 2013 words: 615 flesch: 50 summary: In cases like the jubilee that this Festschrift celebrates, there is indeed a lot to think about, because the life of Professor Miloslav Havlíček has been anything but boring. Acta Polytechnica doi:10.14311/AP.2013.53.0007 Acta Polytechnica 53(5), 2013 © Czech Technical University in Prague, 2013 available online at http://ojs.cvut.cz/ojs/index.php/ap THREE QUARTERS A CENTURY Foreword to Special Issue Dedicated to Prof. Miloslav Havlíček Such a number of years makes one think, as the famous phrase in Some Like it Hot goes. keywords: life; physics cache: ap-1876.pdf plain text: ap-1876.txt item: #466 of 1656 id: ap-1877 author: Socha, Vladimír; Kutílek, Patrik; Smrčka, Pavel; Socha, Luboš title: A COMPARISON OF METHODS USING STRAIN GAUGES TO MONITOR PHYSIOLOGICAL MOVEMENTS ON A HOSPITAL BED date: 2014 words: 4099 flesch: 69 summary: This paper presents a comparison of two types of strain gauge sensor configurations in order to decide which methods may be most appropriate for use in clinical practice. Table 1 shows the calculation of the stress or strain (due to the bending or twisting moment) from the measured change in the output voltage of strain gauges ∆Uo or the measured change in strain εm of the full bridge or half bridge strain gauge circuit. keywords: bed; bending; change; deformation; movements; sensors; strain cache: ap-1877.pdf plain text: ap-1877.txt item: #467 of 1656 id: ap-1878 author: Giovannelli, Franco title: WHAT IS NEW IN ASTROPARTICLE PHYSICS date: 2013 words: 12380 flesch: 65 summary: [10] Albert, J. et al. [59] Dunkley, J. et al.: 2009, ApJ 701, 1804 keywords: apj; astrophysics; eds; energy; et al; giovannelli; graziati; high; mass; matter; particle; physics; ray; rays; sabau; sources; stars; universe cache: ap-1878.pdf plain text: ap-1878.txt item: #468 of 1656 id: ap-188 author: Drchalová, J.; Poděbradská, J.; Maděra, J.; Černý, R. title: Evaluation of Water Resistance and Diffusion Properties of Paint Materials date: 2001 words: 2327 flesch: 54 summary: D m Rd S M T C BA T � � �� � � � w � 1 10 , (9) where d is the thickness of the board-type specimen, M is the molar mass of water vapor, R is the universal gas constant, A, B, C are the constants in the empirical formula describing the dependence of the saturated water vapor pressure on temperature pv, s , p Tv s C BA T, � � � �10 , (10) A = 2900 K, B = 24.738, C = –4.65. Therefore, it appears reasonable to define the in- tegral capillarity Cint (see, e.g., [2–4]) � � � � � �C t C m t m S t d int � � � � � � 0 d , (2) where m is the mass of the moist specimen, and md is the mass of the dried specimen. keywords: capillarity; paint; water; � � cache: ap-188.pdf plain text: ap-188.txt item: #469 of 1656 id: ap-1880 author: Jones, Lawrence W. title: THE FIRST CENTURY OF COSMIC RAYS, AN HISTORICAL OVERVIEW date: 2013 words: 2556 flesch: 51 summary: 53 supplement/2013 The First Century of Cosmic Rays, an Historical Overview hydrogen target served as a veto to restrict triggered events to unaccompanied incident cosmic ray particles (virtually all protons). The accelerator–cosmic ray interaction 4 The Echo Lake and Mount Evans research program 5 Recent cosmic ray research References keywords: chamber; cosmic; particle; physics; ray; rays; research; studies cache: ap-1880.pdf plain text: ap-1880.txt item: #470 of 1656 id: ap-1881 author: Shaviv, Giora title: THE DISCOVERY OF THE CHANDRASEKHAR MASS AND THE CHANDRASEKHAR-EDDINGTON CONTROVERSY date: 2013 words: 5389 flesch: 63 summary: In the paper Eddington set out to look for flaws in the derivation of the result P ∼ ρ4/3 for relativistic electrons. Until 1935, Eddington’s attacks on Chandrasekhar were made in public and not in published papers. keywords: chandrasekhar; eddington; electrons; mass; paper; star; stoner; theory cache: ap-1881.pdf plain text: ap-1881.txt item: #471 of 1656 id: ap-1883 author: Kundt, Wolfgang title: OUR GALACTIC CENTER – THE NEAREST BURNING DISK date: 2013 words: 3632 flesch: 66 summary: Keywords: galactic center, SgrA*, black holes, burning disk. In particular, supermassive BHs in the centers of galaxies were at some stage believed to be able to power gigantic outbursts, i.e. to help solving the energetics of galactic centers, before it became 508 vol. keywords: burning; center; disk; figure; jet; kpc; scale; sgra cache: ap-1883.pdf plain text: ap-1883.txt item: #472 of 1656 id: ap-1884 author: Strauss, Thomas title: OPERA HIGHLIGHTS date: 2013 words: 3519 flesch: 61 summary: Acta Polytechnica doi:10.14311/AP.2013.53.0512 Acta Polytechnica 53(Supplement):512–517, 2013 © Czech Technical University in Prague, 2013 available online at http://ojs.cvut.cz/ojs/index.php/ap OPERA HIGHLIGHTS Thomas Strauss∗, for the OPERA collaboration Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics, University of Bern, Sidlerstrasse 5, CH-3012 Bern ∗ corresponding author: thomas.strauss@lhep.unibe.ch Abstract. The OPERA experiment is a long baseline neutrino oscillation experiment aimed at observing the νµ → ντ neutrino oscillation in the CERN neutrino to Gran Sasso beamline in the appearance mode by detecting the τ-decay. keywords: cern; decay; events; experiment; figure; neutrino; opera; time; vertex cache: ap-1884.pdf plain text: ap-1884.txt item: #473 of 1656 id: ap-1887 author: Straessner, Arno title: HIGHLIGHTS FROM THE LHC date: 2013 words: 4524 flesch: 67 summary: Keywords: LHC, ATLAS, CMS, Standard Model measurements, SM Higgs boson, MSSM Higgs boson, supersymmetry, top quark, exotic particle searches. σ1 ± σ2 ± = 7 TeVs ­1 Ldt = 4.6­4.9 fb∫ ATLAS 2011 2011 Data CLs Limits Higgs boson mass (GeV) 100 200 300 400 500 S M σ/ σ 9 5 % C L l im it o n ­110 1 10 Observed Expected (68%) Expected (95%) Observed Expected (68%) Expected (95%) ­1L keywords: atlas; cms; collaboration; data; exp; higgs; lhc; phys; theo cache: ap-1887.pdf plain text: ap-1887.txt item: #474 of 1656 id: ap-1888 author: Bellotti, E; Broggini, C.; Di Carlo, G.; Laubenstein, M.; Menegazzo, R. title: STUDY OF THE TIME DEPENDENCE OF RADIOACTIVITY date: 2013 words: 2534 flesch: 65 summary: Time modulations We searched for time variations with periods from 6 hours to 400 days. In total about 5100 energy spectra, one hour measuring time each, were collected and used to search for time variations of the decay constant with periods from a few hours to 1 year. keywords: 137cs; activity; data; decay; detector; source; time cache: ap-1888.pdf plain text: ap-1888.txt item: #475 of 1656 id: ap-1891 author: Auriemma, Giulio title: CP VIOLATIONS (AND MORE) AFTER THE FIRST TWO YEARS OF LHCB date: 2013 words: 4614 flesch: 73 summary: The ATLAS and CMS data are at present not inconsistent with a SM Higgs mass in the range 115 ≤ mh ≤ 126 GeV/c2 (see note 1) which is fa- vored by EW precision measurements J.-P. Francoise et al. eds. keywords: cpv; decay; higgs; lhcb; mass; universe cache: ap-1891.pdf plain text: ap-1891.txt item: #476 of 1656 id: ap-1892 author: Gustavino, Carlo title: THE 2H(α, γ)6LI REACTION AT LUNA AND BIG BANG NUCLEOSYNTHETIS date: 2013 words: 2108 flesch: 65 summary: Keywords: LUNA experiment, nuclear astrophysics, Big Bang nucleosynthesis, 6Li abundance, 2H(α, γ)6Li reaction. Experimental set-up Figure 5 shows the experimental set-up used for the 2H(α, γ)6Li reaction. keywords: 6li; beam; energy; kev; reaction cache: ap-1892.pdf plain text: ap-1892.txt item: #477 of 1656 id: ap-1895 author: Shaviv, Giora title: THE HISTORY OF THE S PROCESS AND ITS PRESENT STATE date: 2013 words: 3966 flesch: 73 summary: Richter gave no information about anything unusual with respect to s-process elements. The full story of FG Sagittae has not yet been re- vealed [32], but the accepted view at the present time is that FG Sagittae experienced the last episode of s-process elements formation during the “last ther- mal pulse” and ejected the rest of the envelope as a planetary nebula. keywords: elements; fig; figure; mixing; neutron; nuclei; process; shell; star cache: ap-1895.pdf plain text: ap-1895.txt item: #478 of 1656 id: ap-1897 author: Morselli, Aldo title: SEARCH FOR DARK MATTER WITH GAMMA-RAYS: A REVIEW date: 2013 words: 3394 flesch: 67 summary: [Fermi Coll.] [Fermi Coll.], Astroparticle Physics 35 (2012) 346–353 [arXiv:1108.0201] keywords: coll; energy; fermi; gamma; lat; matter; ray cache: ap-1897.pdf plain text: ap-1897.txt item: #479 of 1656 id: ap-1899 author: Bisnovatyi-Kogan, Gennady S.; Chernin, Artur; Merafina, Marco title: DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES date: 2013 words: 3199 flesch: 66 summary: Keywords: dark energy, equilibrium models, galaxy clusters. M = (0.6 ÷ 1.2) × 1015M� [4], one finds the zero-gravity radius of the Virgo cluster: RΛ = (9÷ 11)Mpc ' 10Mpc. keywords: cluster; dark; density; energy cache: ap-1899.pdf plain text: ap-1899.txt item: #480 of 1656 id: ap-190 author: Dobrovská, D. title: Management of People by Managers with a Technical Background - Research Results date: 2001 words: 2822 flesch: 38 summary: Benchmarking studies show that personnel managers of Czech companies, when compared with those in other European countries, are still obliged to spend a part of their working time on ineffective administra- tive procedures, dealing with problems of current concern of their company rather than addressing conceptual issues re- lated to the company’s future strategy (according to a report by Price Waterhouse – Coopers, 1999). However, the ex- pectation that activities initiated by top management would be more effective than, for instance, activities initiated by personnel managers was not confirmed by our study. keywords: companies; company; employees; management; managers; personnel cache: ap-190.pdf plain text: ap-190.txt item: #481 of 1656 id: ap-1900 author: Persiani, Rino title: RESULTS FROM THE XENON100 EXPERIMENT date: 2013 words: 3578 flesch: 59 summary: The electronic recoil band in log10(S2/S1) vs. en- ergy space defines the region of background events from β- and γ-particles (blue dots in Fig. 3). live days DM search The last run of XENON100 represents 224.6 live days of dark matter search data. keywords: background; dark; data; detector; events; matter; search; shield; xenon100 cache: ap-1900.pdf plain text: ap-1900.txt item: #482 of 1656 id: ap-1903 author: Colafrancesco, Sergio title: THE SZ EFFECT IN THE PLANCK ERA: ASTROPHYSICAL AND COSMOLOGICAL IMPACT date: 2013 words: 9364 flesch: 57 summary: Planck detected SZE clusters are followed-up with a multi-frequency observation program in the X-rays (XMM-Newton), SZE (AMI), optical (ENO, ESO, RTT, NOT, NOAO, among others) to obtain confirmation, redshift estima- tion and estimates of the global physical parameters. Future SZE cluster surveys have an en- hanced sensitivity to constrain primordial magnetic fields because of the z-independence of the SZE and of the smaller biases in the cluster mass reconstruc- tion. keywords: cluster; cmb; colafrancesco; distribution; electron; emission; frequency; galaxy; observations; planck; plasma; polarization; spectrum; sze; thermal cache: ap-1903.pdf plain text: ap-1903.txt item: #483 of 1656 id: ap-1904 author: Whalen, Daniel J. title: THE FIRST STARS date: 2013 words: 3975 flesch: 66 summary: Pop III stars are the key to the character of primeval galaxies, the first heavy elements, the onset of cosmological reionization, and the seeds of supermassive black holes. Later simulation campaigns in the same vein revealed a much broader range of final masses for Pop III stars, 30 ÷ 300 M� [27], and that they could form as bina- ries in a fraction of the halos keywords: apj; et al; iii; pop; stars cache: ap-1904.pdf plain text: ap-1904.txt item: #484 of 1656 id: ap-1906 author: Lovisari, Lorenzo; Laganá, Tatiana F.; Borm, Katharina; Schellenberger, Gerrit; Reiprich, Thomas H. title: METALS IN THE ICM: WITNESSES OF CLUSTER FORMATION AND EVOLUTION date: 2013 words: 2699 flesch: 61 summary: Furthermore, the ob- served evolution of metal abundances can trace the star formation rate and the element ratios, e.g. the ratio of Fe and α-elements can be used to obtain infor- mation on the different types of supernovae that have 580 vol. It is challenging to measure metal abundances in distant clusters, is challenging, and it requires very high quality data. keywords: clusters; enrichment; icm; metal; metallicity cache: ap-1906.pdf plain text: ap-1906.txt item: #485 of 1656 id: ap-1909 author: Sato, Kosuke; Matsushita, Kyoko; Ishisaki, Yoshitaka; Yamasaki, Noriko Y.; Ohashi, Takaya title: THERMAL AND CHEMICAL EVOLUTIONS OF GALAXY CLUSTERS OBSERVED WITH SUZAKU date: 2013 words: 3937 flesch: 70 summary: We studied the properties of the intracluster medium (ICM) of galaxy clusters to the outer regions observed with Suzaku. Keywords: galaxy clusters, X-rays, thermal evolution, chemical evolution. keywords: abundance; clusters; icm; mass; sne cache: ap-1909.pdf plain text: ap-1909.txt item: #486 of 1656 id: ap-1911 author: Bernabei, R.; Belli, P.; Cappella, F.; Caracciolo, V.; Cerulli, R.; Dai, C. J.; d’Angelo, A.; Di Marco, A.; He, H. L.; Incicchitti, A.; Ma, X. H.; Montecchia, F.; Sheng, X. D.; Wang, R. G.; Ye, Z. P. title: DAMA RESULTS: DARK MATTER IN THE GALACTIC HALO date: 2013 words: 4690 flesch: 68 summary: [22] See in: http://people.roma2.infn.it/dama [23] P. Belli et al.: 1996, Astropart. B 436, 379; P. Belli et al.: 1999, Phys. keywords: bernabei; dama; energy; et al; modulation; phys cache: ap-1911.pdf plain text: ap-1911.txt item: #487 of 1656 id: ap-1912 author: Šimon, Vojtech title: NON-THERMAL EMISSION FROM CATACLYSMIC VARIABLES: IMPLICATIONS ON ASTROPARTICLE PHYSICS date: 2013 words: 4542 flesch: 65 summary: [18] Harrison, T. E. et al., 2010, ApJ, 710, 325 [19] Heise, J. et al., 1985, A&A, 148, L14 [23] José, J. et al., 2006, NuPhA, 777, 550 keywords: accretion; cvs; emission; gamma; radio; state cache: ap-1912.pdf plain text: ap-1912.txt item: #488 of 1656 id: ap-1914 author: Hudec, René title: ASTRONOMICAL PLATE ARCHIVES AND SUPERMASSIVE BLACK HOLE BINARIES date: 2013 words: 3477 flesch: 56 summary: Singapore: World Scientific Publishing, in 3 volumes, ISBN 981-256-667-8 (set), ISBN 981-256-980-4 (Part A), ISBN 981-256-979-0 (Part B), ISBN 981-256-978-2 (Part C), 2005, XLVIII + 2492 pp.: 2005 605 Acta Polytechnica 53(Supplement):601–605, 2013 1 Introduction 2 Astronomical plate archives and HE/UHE astrophysics: motivation 3 Historical optical light curves and binary black holes in blazars 4 Example of plate archive data mining 5 Other examples of HE/VHE/UHE science with astronomical photographic plate archives 6 Conclusion Acknowledgements References Historical optical light curves and binary black holes in blazars This review focuses on the use of long-term data from astronomical plate archives for binary blazars. keywords: archives; binary; blazars; data; light; plate; term cache: ap-1914.pdf plain text: ap-1914.txt item: #489 of 1656 id: ap-1916 author: Panagia, Nino title: SUPERNOVA 1987A: CELEBRATING A SILVER JUBILEE date: 2013 words: 4463 flesch: 64 summary: [34] Maran, S.P. et al. 2000, ApJ, 545, 390 [35] Mattila, S. et al. 2010, ApJ, 717, 1140 [55] Staveley-Smith, L. et al. 2007,in Supernova 1987A: Twenty Years After: Supernovae and Gamma-Ray Bursters, eds S. Immler, R. McCray & K.W. Weiler (AIP, New York), AIP Conf. keywords: 1987a; apj; et al; explosion; ring; star; supernova cache: ap-1916.pdf plain text: ap-1916.txt item: #490 of 1656 id: ap-1918 author: Sasaki, Manami title: GALACTIC AND EXTRAGALACTIC SUPERNOVA REMNANTS AS SITES OF PARTICLE ACCELERATION date: 2013 words: 3055 flesch: 66 summary: 4 we compare the radial number distribution of X-ray SNRs in M31 to that of Galactic SNRs and of X-ray SNRs in M33 Middle: Composite image of the remnant of SN 1006 consisting of X-ray data from Chandra in blue, optical data from the University of Michigan’s 0.9m Curtis Schmidt telescope at the Cerro Tololo Inter-American Observatory (yellow) and the Digitized Sky Survey (orange and light blue), and radio data from the Very Large Array and Green Bank Telescope in red. keywords: particles; ray; shock; snrs; supernova cache: ap-1918.pdf plain text: ap-1918.txt item: #491 of 1656 id: ap-192 author: El-Hady, H. M. Abd; Grünwald, A.; Vlčková, K.; Zeithammerová, J. title: Clinoptilolite in Drinking Water Treatment for Ammonia Removal date: 2001 words: 2867 flesch: 70 summary: 1 Solution volume – L 50 61 72 82 88.5 NH4 � eff. – mg l�1 0.06 0.088 0.094 0.29 0.503 BV 500 610 720 820 885 Table 2: Important parameters measured during the experiment using tap water spiked with ammonia Materials Clino. The processes used for the removal of ammonium ions from drinking waters include air stripping, nitrification, breakpoint chlorination, and ion exchange. keywords: clino; nacl; nh4; water cache: ap-192.pdf plain text: ap-192.txt item: #492 of 1656 id: ap-1921 author: Aschenbach, Bernd title: RX-J0852−4622: THE NEAREST HISTORICAL SUPERNOVA REMNANT – AGAIN date: 2013 words: 3826 flesch: 65 summary: Only at X-ray energies > 1.3 keV does Vela Jr. become X-ray visible. From X-ray measurements additional information is ob- tained for an upper limit of the ambient density of n0,x < 0.029 cm−3(d1 f)−1/2 keywords: density; ray; snr; vela; wind cache: ap-1921.pdf plain text: ap-1921.txt item: #493 of 1656 id: ap-1923 author: Ota, Naomi title: THE IMPACT OF SUZAKU MEASUREMENTS ON ASTROPARTICLE PHYSICS date: 2013 words: 4057 flesch: 66 summary: Objectives We search for non-thermal hard X-ray emission from merging clusters using Suzaku broad-band X-ray spec- troscopy to reveal the origin of hard X-ray emission and obtain new insight into the gas physics and the cluster dynamical evolution. Aiming at understanding the physics of gas heating/particle acceleration and the cluster dynamical evolution, we search for non-thermal hard X-ray emission from merging clusters, particularly A2163 and the Bullet Cluster, based on the Suzaku and XMM-Newton/Chandra joint analyses. keywords: clusters; emission; kev; model; ray; suzaku; thermal cache: ap-1923.pdf plain text: ap-1923.txt item: #494 of 1656 id: ap-1925 author: Guainazzi, Matteo title: XMM-NEWTON SCIENTIFIC HIGHLIGHTS: X-RAY SPECTROSCOPIC POPULATION STUDIES OF AGN date: 2013 words: 3904 flesch: 64 summary: Accretion disk inclination angle ı derived from X-ray relativistic spectroscopy on the FERO and GREDOS samples X-ray relativistic spectroscopy is one of the few direct ways to measure the inclination of the innermost disk region, down to a few gravitational radii from the BH event horizon. keywords: agn; apj; disk; et al; mnras; ray; xmm cache: ap-1925.pdf plain text: ap-1925.txt item: #495 of 1656 id: ap-1926 author: Meintjes, Pieter J.; Nkundabakura, Pheneas title: THE SEARCH FOR BLAZARS AMONG THE UNIDENTIFIED EGRET gamma-RAY SOURCES date: 2013 words: 2028 flesch: 67 summary: Optical photometry (B-band and R-band) of PKS J0820−5705 and PMN J0710−3850. Optical spectroscopy of PKS J0820−5705 shows a feature- less spectrum, shallow K4000 depression with broad absorption lines at z = 0.06 resembling an FSRQ, while the spectrum of PMN J0710−3850 shows broad and narrow emission lines at z = 0.129, resembling a LINER-Seyfert I galaxy. keywords: 3eg; j0820−5705; pks; pmn; ray; sources; spectrum cache: ap-1926.pdf plain text: ap-1926.txt item: #496 of 1656 id: ap-1928 author: Krennrich, Frank title: TeV GAMMA RAYS: OBSERVATIONS VERSUS EXPECTATIONS & THEORY date: 2013 words: 3915 flesch: 61 summary: However, an abundance of relativistic electrons, as indicated by non-thermal X-ray synchrotron ra- diation, provides an unwelcome background for the 635 http://dx.doi.org/10.14311/AP.2013.53.0635 http://ojs.cvut.cz/ojs/index.php/ap http://tevcat.uchicago.edu/ Frank Krennrich Acta Polytechnica search for γ-ray emission of hadronic origin. Starburst (SB) galaxies offer a complementary “lab- oratory” for probing the role of SNRs as cosmic-ray ac- celerators; γ-ray emission from an SB galaxy provides a calorimetric measure of the cosmic-ray density in the star-forming region and can be used to establish the connection between star formation (e.g., SNRs) and cosmic-ray origin. keywords: ebl; emission; ray; rays; spectrum; tev cache: ap-1928.pdf plain text: ap-1928.txt item: #497 of 1656 id: ap-1930 author: Pittori, Carlotta title: AGILE DATA CENTER AT ASDC AND AGILE HIGHLIGHTS date: 2013 words: 3364 flesch: 61 summary: Moreover, AGILE has contributed to the discovery and study of new galactic gamma-ray source classes, of peculiar star systems and of mysterious galactic gamma-ray transients, including the observation that the energy spectrum of terrestrial gamma-ray flashes (TGF) ex- tends well above 40MeV. The 2012 Bruno Rossi international Prize was awarded to the PI, Marco Tavani, and the AGILE team for the discovery of rapid gamma-ray flares over daily timescales from the Crab Nebula, thought to be a steady enough source of energy in all wavebands from optical to gamma rays [15]. The AGILE Data Center, part of the ASI Science Data Center (ASDC) located in Frascati, Italy, is in charge of all the science oriented activities related to the analysis, archiving and distribution of AGILE data. keywords: 100mev; agile; data; gamma; ray cache: ap-1930.pdf plain text: ap-1930.txt item: #498 of 1656 id: ap-1933 author: Di Sciascio, Giuseppe title: ARGO-YBJ: STATUS AND HIGHLIGHTS date: 2013 words: 4282 flesch: 69 summary: ARGO-YBJ is confronting various open problems in Cosmic Ray (CR) physics. Energy spectrum of MGRO J2031+41/TeV J2032+4130 as measured by ARGO-YBJ (magenta solid line). keywords: argo; energy; flux; ray; tev; ybj cache: ap-1933.pdf plain text: ap-1933.txt item: #499 of 1656 id: ap-1935 author: Brenneman, Laura title: MEASURING SUPERMASSIVE BLACK HOLE SPINS IN AGN date: 2013 words: 5020 flesch: 69 summary: [27] have done, re- quires the compTT component to possess significant curvature up into the Fe K band, reducing the need for the relativistic reflection to account for this same curvature seen in the data and thereby eliminating the requirement of high BH spin. I begin in §2 with an examination of the spectral modeling techniques used to measure BH spin in AGN. keywords: agn; disk; kev; line; spin cache: ap-1935.pdf plain text: ap-1935.txt item: #500 of 1656 id: ap-1936 author: Díaz Trigo, Maria; Boirin, Laurence title: DISC ATMOSPHERES AND WINDS IN X-RAY BINARIES date: 2013 words: 4920 flesch: 61 summary: These observations are in agreement with models of photoionised winds by Sim et al. In contrast, the same X-rays that prevent UV line opacity can heat low density gas to a temperature ∼ 107 K and potentially drive thermal winds. keywords: disc; et al; line; lmxbs; plasma; wind cache: ap-1936.pdf plain text: ap-1936.txt item: #501 of 1656 id: ap-1939 author: Ziółkowski, Janusz title: POPULATION OF BLACK HOLES IN THE MILKY WAY AND IN THE MAGELLANIC CLOUDS date: 2013 words: 5168 flesch: 71 summary: In this review, I will briefly discuss the different types of black hole (BH) populations (supermassive, intermediate mass and stellar mass BHs) both in the Galaxy and in the Magellanic Clouds and compare them with each other. Stellar mass BHs 4.1. keywords: apj; bhs; binaries; mass; ray cache: ap-1939.pdf plain text: ap-1939.txt item: #502 of 1656 id: ap-194 author: Prokopska, A. title: Application of Morphological Analysis Methodology in Architectural Design date: 2001 words: 3924 flesch: 46 summary: In morphological analysis method, the examination of fragments of reality or their design, and regarding these fragments as a whole composed of various parts (e.g., architectural forms), corresponds with the modern level of complexity of design processes as intellectual processes, and the complexity of the design of technical objects, including architectural objects. Lull’s art as the primary idea of morphological analysis, has been acknowledged as to an element corresponding with the specificity of architectural design. keywords: analysis; design; features; fig; method; methodology; process; solutions; technical cache: ap-194.pdf plain text: ap-194.txt item: #503 of 1656 id: ap-1940 author: Beall, James H. title: FROM GALACTIC TO EXTRAGALACTIC JETS: A REVIEW date: 2013 words: 4547 flesch: 60 summary: 676 Acta Polytechnica 53(Supplement):671–676, 2013 1 Introduction 2 Concurrent radio and X-ray variability of Centaurus A (NGC 5128) as an indication of jet launch or jet–cloud interactions? 3 A comment on particle acceleration in the jet–ambient-medium interaction 4 Galactic microquasars and AGN jets 5 Concluding remarks Acknowledgements References An analysis of the data that have recently become available from observing campaigns, including VLA, VLBA, and satellite instruments, shows some remarkable similarities and significant differences in the data from some epochs of galactic microquasars, including GRS 1915+105, the concurrent radio and X-ray data keywords: beall; data; jet; jets; radio; ray; variability cache: ap-1940.pdf plain text: ap-1940.txt item: #504 of 1656 id: ap-1942 author: Bisnovatyi-Kogan, Gennady; Klepnev, Alexandr S.; Lovelace, Richard V.E. title: ACCRETION DISKS WITH A LARGE SCALE MAGNETIC FIELD AROUND BLACK HOLES date: 2013 words: 4416 flesch: 57 summary: We consider accretion disks around black holes at high luminosity, and the problem of the formation of a large-scale magnetic field in such disks, taking into account the non-uniform vertical structure of the disk. Jets are observed in objects with black holes: collimated ejection from accretion disks. keywords: accretion; bisnovatyi; disk; field; kogan; region; scale cache: ap-1942.pdf plain text: ap-1942.txt item: #505 of 1656 id: ap-1945 author: Beall, J. H.; Guillory, J.; Rose, D. V.; Wolff, Michael T. title: MODELING JET INTERACTIONS WITH THE AMBIENT MEDIUM date: 2013 words: 2970 flesch: 54 summary: Solving the system of equations yields a time-dependent set of normal- ized wave energies (i.e., the ratio of the wave energy divided by the thermal energy of the plasma) that are generated as a result of jets interaction with the ambient medium. Recent high-resolution (see, e.g., [13]) observations of astrophysical jets reveal complex structures apparently caused by ejecta from the central engine as the ejecta interact with the surrounding interstellar material. keywords: beall; code; energy; jet; jets; medium; plasma; simulations cache: ap-1945.pdf plain text: ap-1945.txt item: #506 of 1656 id: ap-1946 author: Amati, Lorenzo; Dichiara, Simone title: INVESTIGATING THE Ep, i –Eiso CORRELATION date: 2013 words: 4816 flesch: 55 summary: Fermi GRBs are marked with red (GBM detection) and blue (GBM + LAT detec- tion) color. Finally, based on time-resolved analysis of BATSE, BeppoSAX and Fermi GRBs, it was found that the Ep,i –Liso correlation holds also within a good fraction of GRBs [20], which is robust evidence for a physical origin, also providing clues to its explanation. keywords: correlation; eiso; eiso correlation; energy; fermi; grbs; redshift cache: ap-1946.pdf plain text: ap-1946.txt item: #507 of 1656 id: ap-1948 author: Stanev, Todor title: ULTRAHIGH ENERGY COSMIC RAYS: REVIEW OF THE CURRENT SITUATION date: 2013 words: 3594 flesch: 68 summary: Keywords: high energy cosmic rays, hadronic interaction at very high energy, origin of the highest energy cosmic rays. At relatively low energy, the widths of the distribu- tions were more similar to proton showers, while at high energy the statistics is not enough to judge the distributions. 2.3. keywords: array; auger; energy; events; hires; telescope cache: ap-1948.pdf plain text: ap-1948.txt item: #508 of 1656 id: ap-1951 author: Grillo, Aurelio F. title: THE MASS COMPOSITION OF ULTRA HIGH ENERGY COSMIC RAYS date: 2013 words: 3104 flesch: 61 summary: [ g /c m m a x < X 650 700 750 800 850 1407 1251 998 781 619 457 331 230 188 143 186 106 47 EPOSv1.99 p Fe QGSJET01 p Fe SIBYLL2.1 p Fe QGSJETII p Fe EPOSv1.99 p Fe QGSJET01 p Fe SIBYLL2.1 p Fe QGSJETII p Fe Figure 3. Xmax (upper panel) and RMS(Xmax) com- pared with predicted values for pure compositions in different interaction models. Consequently they pro- vide different expectations for 〈Xmax〉 and σ(Xmax). keywords: auger; composition; data; energy; mass; xmax cache: ap-1951.pdf plain text: ap-1951.txt item: #509 of 1656 id: ap-1953 author: Aloisio, Roberto title: COMPUTATIONAL SCHEMES FOR THE PROPAGATION OF ULTRA HIGH ENERGY COSMIC RAYS date: 2013 words: 3012 flesch: 56 summary: 2. One should distin- guish between primary nuclei, i.e. nuclei accelerated at the source and injected in the intergalactic space, and secondary nuclei and nucleons, i.e. particles pro- duced as secondaries in the photo-disintegration chain. In particular, the flux of secondary nuclei and nucleons produced in the photo-disintegration 705 Roberto Aloisio Acta Polytechnica chain of primary A0 is obtained by the numerical computation of A0 nested integrals and this computa- tion should be repeated each time the hypothesis on sources (injection and distribution) is changed. keywords: disintegration; energy; kinetic; nuclei; photo; process cache: ap-1953.pdf plain text: ap-1953.txt item: #510 of 1656 id: ap-1954 author: Petrukhin, Anatoly A. title: INFLUENCE OF THE RESULTS OF UHECR DETECTION ON THE LHC EXPERIMENTS date: 2013 words: 3492 flesch: 59 summary: The cosmic ray energy region 1015 ÷ 1017 eV corresponds to LHC energies 1 ÷ 14TeV in the center-of-mass system. Of course, there are many tasks connected with investigations of hadron-hadron interactions at LHC energies, tests of existing theoretical models be- havior at such energies, etc. keywords: eas; energy; experiments; lhc; muons; nuclei; production cache: ap-1954.pdf plain text: ap-1954.txt item: #511 of 1656 id: ap-1957 author: Bruno, A.; Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A.; Bellotti, R.; Boezio, M.; Bogomolov, E. A.; Bongi, M.; Bonvicini, V.; Borisov, S.; Bottai, S.; Cafagna, F.; Campana, D.; Carbone, R.; Carlson, P.; Casolino, M.; Castellini, G.; Consiglio, L.; De Pascale, M. P.; De Santis, C.; De Simone, N.; Di Felice, V.; Galper, A. M.; Gillard, W.; Grishantseva, L.; Jerse, G.; Karelin, A. V.; Kheymits, M. D.; Koldashov, S. V.; Krutkov, S. Y.; Kvashnin, A. N.; Leonov, A.; Malakhov, V.; Marcelli, L.; Mayorov, A. G.; Menn, W.; Mikhailov, V. V.; Mocchiutti, E.; Monaco, A.; Mori, N.; Nikonov, N.; Osteria, G.; Palma, F.; Papini, P.; Pearce, M.; Picozza, P.; Pizzolotto, C.; Ricci, M.; Ricciarini, S. B.; Rossetto, L.; Sarkar, R.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stozhkov, Y. I.; Vacchi, A.; Vannuccini, E.; Vasilyev, G.; Voronov, S. A.; Yurkin, Y. T.; Wu, J.; Zampa, G.; Zampa, N.; Zverev, V. G. title: PRECISE COSMIC RAYS MEASUREMENTS WITH PAMELA date: 2013 words: 3820 flesch: 59 summary: PAMELA data cover the largest energy range ever achieved, with no atmospheric overburden. 2.2.1. PAMELA data are consistent with those of other ex- periments, considering the statistical and systematic uncertainties of the various experiments [7, and refer- ences therein]. keywords: cosmic; data; energy; et al; italy; pamela; results cache: ap-1957.pdf plain text: ap-1957.txt item: #512 of 1656 id: ap-1958 author: Fargion, Daniele title: RADIOACTIVE UHECR ASTRONOMY: CORRELATING GAMMA ANISOTROPY AND NEUTRINO PEV EVENTS date: 2013 words: 4773 flesch: 69 summary: Their connection to UHECR radioactive decay and scattering in flight is a possibility to be tested in future Cosmic ray anisotropy and UHECR maps. The recent absence of narrow angle clustering in UHECR maps, as it should be expected for protons, the missing of events along the nearest Cluster Virgo, the wide spread (nearly 16° angle) of UHECR along CenA are in disagreement with the first proton–UHECR AUGER understanding. keywords: anisotropy; auger; cena; energy; events; gamma; gzk; neutrino; nuclei; tev; uhecr cache: ap-1958.pdf plain text: ap-1958.txt item: #513 of 1656 id: ap-196 author: Haghi, A. K. title: Experimental Investigations on Drying of Porous Media Using Infrared Radiation date: 2001 words: 1628 flesch: 55 summary: Where S = speed of fabric in the oven (m/s), L = fabric width (m), D = superficial weight of dry fabric (g/m2 ). Keywords: infrared dryer, porous media, drying rate, image analysis Table 1: Fabrics used in the drying study FABRIC FIBER WEIGHT, g/m2 A COTTON 130 B POLYESTER 150 In the drying process, water is evaporated from the ex- posed yarn surfaces and replaced by water migration from within the fabric structure. keywords: drying; fabric; image; rate; surface cache: ap-196.pdf plain text: ap-196.txt item: #514 of 1656 id: ap-1961 author: Erlykin, Anatoly D.; Wolfendale, Arnold W. title: DO WE SEE THE ‘IRON PEAK’? date: 2013 words: 2722 flesch: 73 summary: [3] Apel W.D. et al., 2009, Astropart. Cosm.Ray Conf., Beijing, 1, 209 [5] Berezhnev S.F.et al., 2011b, 32nd Int. keywords: energy; knee; mass; source; spectrum cache: ap-1961.pdf plain text: ap-1961.txt item: #515 of 1656 id: ap-1963 author: Chiavassa, A.; Apel, W. D.; Arteaga-Velázquez, J. C.; Bekk, K.; Bertaina, M.; Blümer, J.; Bozdog, H.; Brancus, I. M.; Cantoni, E.; Cossavella, F.; Daumiller, K.; de Souza, V.; Di Pierro, F.; Doll, P.; Engel, R.; Engler, J.; Finger, M.; Fuchs, B.; Fuhrmann, D.; Garino, F.; Gils, H. J.; Glasstetter, R.; Grupen, C.; Haungs, A.; Heck, D.; Hörandel, J. R.; Huber, D.; Huege, T.; Kampert, K.-H.; Kang, D.; Klages, H. O.; Link, K.; Łuczak, P.; Ludwig, M.; Mathes, H. J.; Mayer, H. J.; Melissas, M.; Milke, J.; Mitrica, B.; Morello, C.; Oehlschläger, J.; Ostapchenko, S.; Palmieri, N.; Petcu, M.; Pierog, T.; Rebel, H.; Roth, M.; Schieler, H.; Schoo, S.; Schröder, F. G.; Sima, O.; Toma, G.; Trinchero, G. C.; Ulrich, H.; Weindl, A.; Wochele, J.; Wommer, M.; Zabierowski, J. title: DETECTION OF A CHANGE OF SLOPE IN THE SPECTRUM OF HEAVY MASS COSMIC RAYS PRIMARIES BY THE KASCADE-GRANDE EXPERIMENT date: 2013 words: 2132 flesch: 61 summary: Keywords: cosmic rays, energy spectrum, extensive air showers. Reconstructed energy spectrum of the electron-poor and electron-rich components together with the all-particle spectrum for the angular range 0° < θ < 40°. keywords: cic; energy; experiment; grande; heavy; kascade; knee; spectrum cache: ap-1963.pdf plain text: ap-1963.txt item: #516 of 1656 id: ap-1965 author: Tricomi, Alessia title: RESULTS FROM LHCF EXPERIMENT date: 2013 words: 2791 flesch: 59 summary: Single photon energy spectra measured by LHCf (black dots) in η > 10.94 (left) and 8.81 < η < 8.99 (right) bin, respectively, for 7TeV (top panel) and η > 10.15 (left) and 8.77 < η < 9.46 (right) bin, respectively, for 900GeV (bottom panel) p–p collisions. Impact of LHCf results on HECR Physics The first LHCf results have attracted attention in the HECR community. keywords: data; energy; lhcf; models; spectra cache: ap-1965.pdf plain text: ap-1965.txt item: #517 of 1656 id: ap-1966 author: van Putten, Maurice H.P.M. title: SEARCH FOR GRAVITATIONAL WAVES FROM SUPERNOVAE AND LONG GRBS date: 2013 words: 4624 flesch: 60 summary: We report on evidence for black hole spindown in the light curves of the BATSE catalogue of 1491 long GRBs by application of matched filtering. Frame dragging induced outflows According to the Kerr metric, the angular momen- tum of rotating black holes induces frame dragging. keywords: curve; energy; grbs; hole; light; neutron; supernovae; time; van cache: ap-1966.pdf plain text: ap-1966.txt item: #518 of 1656 id: ap-1968 author: Milano, L.; Calloni, E.; De Rosa, R.; De Laurentis, M.; Di Fiore, L.; Garufi, F. title: THE PAST AND THE FUTURE OF DIRECT SEARCH OF GW FROM PULSARS IN THE ERA OF GW ANTENNAS date: 2013 words: 2842 flesch: 72 summary: Figure 1 shows that the great majority of known pulsars (green diamonds) are below the present sen- sitivity curves of the LIGO and Virgo GW anten- nas, and only a few of them (shown in cyan) fall in the range of sensitivity of either Advanced LIGO or Advanced Virgo or in the range of the Einstein Telescope Hirakawa et al. keywords: ligo; pulsars; virgo cache: ap-1968.pdf plain text: ap-1968.txt item: #519 of 1656 id: ap-1971 author: Martini, M.; Dell’Agnello, S.; Currie, D.; Delle Monache, G. O.; Vittori, R.; Berardi, S.; Boni, A.; Cantone, C.; Ciocci, E.; Lops, C.; Garattini, M.; Maiello, M.; Patrizi, G.; Tibuzzi, M.; Intaglietta, N.; Chandler, J.; Bianco, G. title: MOONLIGHT: A NEW LUNAR LASER RANGING RETROREFLECTOR AND THE LUNAR GEODETIC PRECESSION date: 2013 words: 2649 flesch: 48 summary: [11] T. W. Murphy et al, Publications of The Astronomical Society of the Pacific, 121:29–40, 2009; The Apache Point Observatory Lunar Laser-ranging Operation (APOLLO): Two Years of Millimeter- Precision Measurements of the Earth-Moon Range [12] I. I. Shapiro, R. D. Reasenberg, J. F. Chandler, R. W. Babcock, PRL 61, 2643 (1988); Measurement of the de Sitter Precession of the Moon: a Relativistic Three-Body Effect [13] J. G. Williams, S. G. Turyshev, and D. H. Boggs, PRL 93, 261101 (2004) [14] Williams, J. G., Newhall, X. X., Dickey, J. O. Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 53, Issue 12, 15 June 1996, pp.6730–6739 06/1996; Relativity parameters determined from lunar laser ranging [15] Williams, James G., Newhall, X. X., Dickey, Jean O., Planetary and Space Science, v. 44, p. 1077–1080. 10/1996; Lunar moments, tides, orientation, and coordinate frames [16] Williams, J. G., Turyshev, S. G., Boggs, D. H., Ratcliff, J. T., Adv. Space Res. 37(1), 67–71, 2006; Lunar laser ranging science: gravitational physics and lunar interior and geodesy 749 http://iln.arc.nasa.gov/ Acta Polytechnica 53(Supplement):746–749, 2013 1 Introduction 1.1 The Satellite/lunar laser ranging Characterization Facility (SCF) 1.2 The MoonLIGHT – ILN experiment 2 Analysis of lunar laser ranging data 3 Conclusions Acknowledgements References keywords: apollo; arrays; laser; llr; lunar; ranging; scf cache: ap-1971.pdf plain text: ap-1971.txt item: #520 of 1656 id: ap-1973 author: Grieder, Peter K. F. title: RECENT DEVELOPMENTS IN ULTRA-HIGH ENERGY NEUTRINO ASTRONOMY date: 2013 words: 3822 flesch: 62 summary: Moreover, huge thick homogeneous surface layers or bodies of suitable target material, such as the Antarc- tic ice shelf or the giant Greenland ice cap, can be surveyed with balloon (ANITA, Gorham et al. 53 supplement/2013 Recent Developments in Ultra-High Energy Neutrino Astronomy [49] Münch, K. et al.: 2005, Proc. ICRC 5, keywords: cherenkov; energy; et al; ice; neutrino; proc; uhe cache: ap-1973.pdf plain text: ap-1973.txt item: #521 of 1656 id: ap-1974 author: Maldera, S. title: LIMIT ON UHE NEUTRINO FLUXES FROM THE PIERRE AUGER OBSERVATORY date: 2013 words: 3069 flesch: 59 summary: Exposure of the surface detector for ES and DG neutrino induced showers, corresponding re- spectively to 3.5 and 2 years of the complete and fully efficient surface detector (the deployment of the SD was concluded by the end of 2008). Identification of ν candidates Neutrino induced showers have to be extracted from a large background of cosmic ray showers (protons or heavier nuclei). keywords: auger; earth; flux; limits; neutrino; showers cache: ap-1974.pdf plain text: ap-1974.txt item: #522 of 1656 id: ap-1977 author: Ronga, Francesco title: ANALYSIS OF THE MACRO EXPERIMENT DATA TO COMPARE PARTICLE ARRIVAL TIMES UNDER GRAN SASSO date: 2013 words: 2898 flesch: 65 summary: Difference between track time and average time for multiple parallel muons with 2 or 3 tracks as function of cos(θ). Difference between track time and average time for multiple muons with 2 or 3 tracks (continuos line) compared with a “simulation” using the data (dashed line). keywords: analysis; data; macro; muons; neutrino; time; tracks cache: ap-1977.pdf plain text: ap-1977.txt item: #523 of 1656 id: ap-1978 author: Katz, Uli F. title: NEUTRINOS AS COSMIC MESSENGERS IN THE ERA OF ICECUBE, ANTARES AND KM3NET date: 2013 words: 3917 flesch: 60 summary: It is important to note that – at least for neutrino energies below a PeV – the field of view of neutrino telescopes is restricted to the lower hemisphere and therefore Galactic neutrino sources are difficult to observe from the South Pole. Keywords: neutrino astronomy, neutrino telescopes, ANTARES, IceCube, KM3NeT. 1. keywords: .1667em\relax; \kern; antares; icecube; km3net; neutrino; sea; sources; telescopes cache: ap-1978.pdf plain text: ap-1978.txt item: #524 of 1656 id: ap-198 author: Kratěna, J.; Fořt, I.; Brůha, O. title: Dynamic Effect of Discharge Flow of a Rushton Turbine Impeller on a Radial Baffle date: 2001 words: 3584 flesch: 60 summary: If we consider the total number of baffles nb, the moment transferred by the baffles is M F R nb av b b� � � , (28) and finally in dimensionless form M F R n N D n F R Db av b b b av b* * *� � � � � � � � � 3 5 . (29) Similarly the portion of the reaction moment of the baffles corresponding to the mutual interference of nb baffles and the impeller discharge stream can be expressed in dimen- sionless form as M n F R Db d b d av b , * , *� � � , (30) where the quantity Fd av, * was calculated according to Eq. keywords: baffles; discharge; impeller; radial; � � cache: ap-198.pdf plain text: ap-198.txt item: #525 of 1656 id: ap-1983 author: Desiati, Paolo title: ICECUBE OBSERVATORY: NEUTRINOS AND THE ORIGIN OF COSMIC RAYS date: 2013 words: 4711 flesch: 58 summary: IceTop, using events in coincidence with the deep IceCube array, provides the measurement of the spec- trum and mass composition of cosmic rays at the knee and up to about 1018 eV. The DeepCore sub-array, consisting of 6 densely instrumented strings located at the bottom-center of IceCube, lowers the obser- vatory neutrino energy threshold to about 10GeV. DeepCore uses the surrounding IceCube instrumented volume as a veto for the background of cosmic ray induced through-going muon bundles, thus enhancing the detection of down-going neutrinos within the Deep Core volume. Keywords: neutrinos, cosmic rays, anisotropy. keywords: cosmic; energy; et al; high; icecube; neutrinos; phys; rays; sources cache: ap-1983.pdf plain text: ap-1983.txt item: #526 of 1656 id: ap-1984 author: Farnese, Christian title: NEUTRINOS FROM ICARUS date: 2013 words: 3491 flesch: 54 summary: In particular for CNGS neutrino events, using the “Early Warning Signal” sent from CERN to LNGS 80 ms be- fore each proton extraction, a 60µs gate is open at the expected proton extraction time, and the trigger is gen- erated when the PMT sum signal is present in at least one TPC chamber within the gate. Furthermore the experimental energy deposi- tion spectrum of neutrino events agrees with the MC expectation assuming δ = 0. keywords: beam; cern; cngs; detector; events; icarus; lar; neutrino; time; tpc cache: ap-1984.pdf plain text: ap-1984.txt item: #527 of 1656 id: ap-1986 author: Tomei, Claudia title: STATUS OF THE CUORE EXPERIMENT date: 2013 words: 2769 flesch: 63 summary: Some contributions to CUORE background are shown in Tab. 1, based on the pessimistic hypoth- esis that all the contributions observed in the R&D tests come from sources that will not improve with the geometry of CUORE. CUORE bolometers [10, 11] are tellurium dioxide crystals. keywords: background; cryostat; crystals; cuore; cuore-0; detector; experiment; mass; neutrino cache: ap-1986.pdf plain text: ap-1986.txt item: #528 of 1656 id: ap-1988 author: Zavarise, Paolo title: THE GERDA EXPERIMENT: STATUS AND FUTURE PLANS date: 2013 words: 2332 flesch: 69 summary: Keywords: neutrinoless double beta decay, Majorana neutrino, low background experiment, germa- nium 76. Full energy spectrum of enriched detectors. keywords: background; decay; detectors; energy; experiment; gerda; mass cache: ap-1988.pdf plain text: ap-1988.txt item: #529 of 1656 id: ap-1991 author: Ferroni, Fernando title: NEUTRINOLESS DOUBLE BETA DECAY: AN EXTREME CHALLENGE date: 2013 words: 1723 flesch: 60 summary: The problem The challenge is in the very fact that the sensitivity of this kind of experiment, as previously seen, improves only with the square root of the selected isotope mass, running time, decrease of background index and im- provement of energy resolution. Also background level (b) and energy resolution (ΔE) behaves as a square root. keywords: background; decay; energy; mass; neutrino cache: ap-1991.pdf plain text: ap-1991.txt item: #530 of 1656 id: ap-1992 author: Boller, Thomas title: EROSITA: AGN SCIENCE, BACKGROUND DETERMINATION, AND OPTICAL FOLLOW-UP SPECTROSCOPY date: 2013 words: 3941 flesch: 61 summary: eROSITA black hole growth studies and multi-wavelength follow-up work The study of the black hole growth over cosmic time is one of the key science issues which are of relevance for the core science of the eROSITA mission. 3. eROSITA background determination The eROSITA background has been simulated based on photon and high-energy particle spectral compo- nents. keywords: background; erosita; galaxies; hole; ray; survey cache: ap-1992.pdf plain text: ap-1992.txt item: #531 of 1656 id: ap-1993 author: Hudec, René; Šimon, Vojtech; Hudec, Lukáš title: GRB INVESTIGATIONS BY ESA GAIA AND LOFT date: 2013 words: 2950 flesch: 59 summary: 53 supplement/2013 GRB Investigations by ESA Gaia and LOFT the algorithms developed for the plates for Gaia. An interesting feature of Gaia BP and RP instruments will be the study of highly redshifted triggers. keywords: dispersion; gaia; grbs; loft; oas; ray cache: ap-1993.pdf plain text: ap-1993.txt item: #532 of 1656 id: ap-1994 author: Maeda, Yoshitomo; Takahashi, Tadayuki; Mitsuda, Kazuhisa; Kelley, Richard title: THE ASTRO-H MISSION date: 2013 words: 2066 flesch: 70 summary: [12] H. Tsunemi et al., “Soft X-ray imager (SXI) onboard ASTRO-H”, Proc. SPIE, 8443, submitted (2012) “Rapid X-ray flaring from the direction of the supermassive black hole at the Galactic Centre” Nature 413, 45–48 (2001) 806 Acta Polytechnica 53(Supplement):803–806, 2013 1 Introduction and current status 2 Spacecraft and instruments 3 Expected Scientific Performance Acknowledgements References keywords: astro; kev; ray; spie cache: ap-1994.pdf plain text: ap-1994.txt item: #533 of 1656 id: ap-1996 author: Yashin, I. I.; Ampilogov, N. V.; Astapov, I.I.; Barbashina, N.S.; Borog, V.V.; Dmitrieva, A.N.; Kokoulin, R.P.; Kompaniets, K.G.; Mannocchi, G.; Mikhailenko, A.S.; Petrukhin, A.A.; Saavedra, O.; Shutenko, V.V.; Trinchero, G.; Yakovleva, E.I. title: LARGE AREA HODOSCOPES FOR MUON DIAGNOSTICS OF HELIOSPHERE AND EARTH’S MAGNETOSPHERE date: 2013 words: 2351 flesch: 61 summary: Keywords: cosmic rays, muons, muon hodoscope, angular variations of muon flux, solar, terrestrial connections, heliosphere, magnetosphere. To carry out muon diagnostics, special detectors – muon hodoscopes – which can detect muons from any direction with good angular resolution in real-time mode are required. keywords: jul; muon; uragan; variations cache: ap-1996.pdf plain text: ap-1996.txt item: #534 of 1656 id: ap-1998 author: Bertaina, Mario; Ebisuzaki, Toshikazu; Galeotti, Piero; Kajino, Fumiyoshi title: THE JEM-EUSO MISSION date: 2013 words: 2122 flesch: 62 summary: Introduction The Extreme Universe Space Observatory – EUSO is the first space mission devoted to exploring the Universe through the detection of the extreme energy (E > 50EeV) cosmic rays (EECRs) and neutrinos [1– 5]; it looks downward from the International Space Station (ISS). In 2006, Japanese and U.S. teams redefined the mission as an observatory attached to KIBO, the Japanese Experiment Module (JEM) of ISS. keywords: energy; euso; jem; mission cache: ap-1998.pdf plain text: ap-1998.txt item: #535 of 1656 id: ap-200 author: John, J. title: Nonlinear Continuous System Identification by Means of Multiple Integration II date: 2001 words: 3774 flesch: 71 summary: (7) From (3), (4), (7) follows � � � � � �� �� �x t i f t (11) Let us denote the weighted sum of multiple determined integrals (6 ) (after enumeration of this expression we obtain a scalar constant) as � � � � � �� �x keywords: t t; t �; � d; � g; � u; � x; � y; � � cache: ap-200.pdf plain text: ap-200.txt item: #536 of 1656 id: ap-2000 author: Antonelli, Antonella title: THE NA62 EXPERIMENT AT CERN AND THE MEASUREMENT OF THE ULTRA-RARE DECAY K⁺→π⁺ v ̄v date: 2013 words: 2033 flesch: 66 summary: The Level 0 (L0) trigger algorithm is based on the presence of a charged particle in the RICH and veto conditions on LKr, LAV and muon veto detector, and is performed by dedicated custom hardware modules, with a maxi- mum output rate of 1MHz and a maximum latency of 1ms. Rejection of background from nuclear interactions of charged beam particles other than K+ will be guar- anteed by a differential Cherenkov counter (CEDAR) placed before kaons enter the decay region: Cherenkov photons radiated in a 6m long vessel, filled with he- lium gas, are focussed by an optimised optical system on eight fast PMTs. keywords: beam; level; na62; system; veto cache: ap-2000.pdf plain text: ap-2000.txt item: #537 of 1656 id: ap-2002 author: March, Riccardo; Bellettini, Giovanni; Tauraso, Roberto; Dell’Agnello, Simone title: CONSTRAINING SPACETIME TORSION WITH THE MOON, MERCURY AND LAGEOS date: 2013 words: 2779 flesch: 62 summary: As a consequence, spacetime torsion would be observation- ally negligible in the solar system. Gravitational forces are due entirely to spacetime torsion and not to curvature. keywords: precession; tensor; torsion cache: ap-2002.pdf plain text: ap-2002.txt item: #538 of 1656 id: ap-2003 author: Garattini, M.; Dell’Agnello, S.; Currie, D.; Delle Monache, G. O.; Tibuzzi, M.; Patrizi, G.; Berardi, S.; Boni, A.; Cantone, C.; Itaglietta, N.; Lops, C.; Maiello, M.; Martini, M.; Vittori, R.; Bianco, G.; March, R.; Bellettini, G.; Tauraso, R. title: MOONLIGHT: A NEW LUNAR LASER RANGING RETROREFLECTOR INSTRUMENT date: 2013 words: 2559 flesch: 52 summary: Since 1969 Lunar Laser Ranging (LLR) to the Apollo Cube Corner Reflector (CCR) arrays has supplied several significant tests of gravity: Geodetic Precession, the Strong and Weak Equivalence Principle (SEP, WEP), the Parametrized Post Newtonian (PPN) parameter β, the time change of the Gravitational constant (G), 1/r2 deviations and new gravitational theories beyond General Relativity (GR), like the unified braneworld theory (G. Dvali et al., 2003). Keywords: Lunar Laser Ranging, general relativity, gravitation, equivalence principle, geodetic precession, gravitational constant variation, PPN parameters, APOLLO station, International Lunar Network, Cube Corner Retroreflector. keywords: apollo; ccr; laser; llr; lunar; new; ranging cache: ap-2003.pdf plain text: ap-2003.txt item: #539 of 1656 id: ap-2004 author: Weidenhaupt, Klaus title: THE AUGER ENGINEERING RADIO ARRAY date: 2013 words: 2586 flesch: 56 summary: Radio detector stations and calibration The hardware design of the autonomous radio-detector stations (RDSs) evolves from various prototype setups at the Pierre Auger Observatory. [2] use arrays of radio antennas to detect coherent VHF (10÷100MHz) radio emission from extensive air showers induced by cosmic rays. keywords: aera; air; auger; cosmic; emission; pierre; radio cache: ap-2004.pdf plain text: ap-2004.txt item: #540 of 1656 id: ap-2007 author: Federici, Memmo; Martino, Bruno L. title: A COMPUTER CLUSTER SYSTEM FOR PSEUDO-PARALLEL EXECUTION OF GEANT4 SERIAL APPLICATION date: 2013 words: 1882 flesch: 49 summary: • Intensive reuse of serial simulation software. Simulation of the interactions between particles and matter in studies for developing X-rays detectors generally requires very long calculation times (up to several days or weeks). keywords: cluster; geant4; simulation; software; system; user cache: ap-2007.pdf plain text: ap-2007.txt item: #541 of 1656 id: ap-2008 author: Bressler, Smadar; Shaviv, Giora; Shaviv, Nir J. title: THE SENSITIVITY OF THE GREENHOUSE EFFECT TO CHANGES IN THE CONCENTRATION OF GASES IN PLANETARY ATMOSPHERES date: 2013 words: 4932 flesch: 64 summary: Keywords: greenhouse effect, radiative transfer, earth like planets, surface temperature. Radiative models which are essentially transmit- tance models like the LBL, cannot predict the result- ing temperature changes, as they do not impose an energy balance equation. keywords: atmosphere; effect; greenhouse; model; surface; temperature; τfir; τvis cache: ap-2008.pdf plain text: ap-2008.txt item: #542 of 1656 id: ap-2010 author: Antink, Christoph Hoog; Leonhardt, Steffen title: QUANTIFICATION OF RESPIRATORY SINUS ARRHYTHMIA WITH HIGH-FRAMERATE ELECTRICAL IMPEDANCE TOMOGRAPHY date: 2013 words: 4152 flesch: 66 summary: In te rv a l [m s ] RMSE = 23.0382 ms, r = 0.91413 CRS ECG 0 20 40 60 80 100 120 150 200 250 300 P e a k D e la y [m s ] Time [seconds] t delay,mean = 203.683 ms ECG to EIT Figure 5. In te rv a l [m s ] RMSE = 33.4943 ms, r = 0.9393 CRS ECG 0 20 40 60 80 100 120 150 200 250 300 350 P e a k D e la y [m s ] Time [seconds] t delay,mean = 218.0469 ms ECG to EIT Figure 6. keywords: bbi; crs; ecg; eit; heart; impedance; rate; run; time cache: ap-2010.pdf plain text: ap-2010.txt item: #543 of 1656 id: ap-2012 author: Lavička, Hynek; Novotný, Jan title: EMPLOYMENT, PRODUCTION AND CONSUMPTION WITH RANDOM UPDATE: NON-EQUILIBRIUM STATIONARY STATE EQUATIONS date: 2013 words: 4367 flesch: 59 summary: Introduction In recent years, the emergence of cheap computational power and progress in big data science has resulted in the appearance of multi-agent computational models in the economic and social sciences, see [4]. By contrasts, multi-agent computational models have to be perceived as complex systems, see [5–7], and this requires a specific set of tools. keywords: agent; equations; model; state; system; turn; wage cache: ap-2012.pdf plain text: ap-2012.txt item: #544 of 1656 id: ap-2014 author: Böhm, Anna; Brüser, Christoph; Leonhardt, Steffen Leonhardt title: A NOVEL BCG SENSOR-ARRAY FOR UNOBTRUSIVE CARDIAC MONITORING date: 2013 words: 3412 flesch: 64 summary: However, optical sensors are prone to movement artifacts, as are other BCG sensors. Raw BCG signal. keywords: bcg; beat; channel; heart; intervals; rate; sensor; signal; time cache: ap-2014.pdf plain text: ap-2014.txt item: #545 of 1656 id: ap-2015 author: Frougny, Christiane; Klouda, Karel title: FACTOR AND PALINDROMIC COMPLEXITY OF THUE-MORSE’S AVATARS date: 2013 words: 2571 flesch: 84 summary: Keywords: factor complexity, palindromic complexity, univoque numbers, Thue-Morse word. Factor complexity The following lemma points out the similarity between the languages of the words uTM and wa. keywords: complexity; factor; word cache: ap-2015.pdf plain text: ap-2015.txt item: #546 of 1656 id: ap-2017 author: Jiroutová, Dita; Vokáč, Miroslav title: ANALYSIS OF THE ACCURACY OF FIBRE-OPTIC STRAIN GAUGES date: 2013 words: 2534 flesch: 58 summary: The most widely used deformation sensors include resistance strain gauges, capacity and induc- tion displacement sensors, and video strain gauges. The spreads of the calibration constants show that it is necessary to calibrate SOFO strain gauges, and to determine their calibration constant, before they are used. keywords: fibre; length; optic; sofo; strain cache: ap-2017.pdf plain text: ap-2017.txt item: #547 of 1656 id: ap-2018 author: Mikeš, Jan; Kreibich, Ondrej; Neužil, Jan title: A LIGHTNING CONDUCTOR MONITORING SYSTEM BASED ON A WIRELESS SENSOR NETWORK date: 2013 words: 3019 flesch: 60 summary: This paper presents ways to carry out wireless monitoring of lightning strikes on buildings and to deal with their impact on lightning conductors. Monitored building The proposed solution was developed by implement- ing a wireless sensor into a device used commercially for making a statistical record of lightning strikes on lightning conductors. keywords: buildings; lightning; node; prague; protection; sensor; strikes; system cache: ap-2018.pdf plain text: ap-2018.txt item: #548 of 1656 id: ap-202 author: Vognar, M.; Fišer, M.; Šimáně, Č.; Chvátil, D. title: Filling and Recycling Apparatus of a Cyclotron Target with Enriched Krypton for Production of Radiopharmaceuticals date: 2001 words: 3216 flesch: 60 summary: The design and construction makes use of previous experience in the construction and operation of two analogue apparatuses for Xe124 high pressure gas targets, but major modifications have been incorporated, evoked by the different physical properties of Kr, by the character of the nuclear reaction, and by the demand for automation from the side of the end user. Keywords: generator, Kr gas target, 36K 82(p, 2n) 37Rb81 reaction. keywords: apparatus; container; gas; heating; pressure; target; � � cache: ap-202.pdf plain text: ap-202.txt item: #549 of 1656 id: ap-2021 author: Neusser, Zdenek; Valášek, Michael title: CONTROL OF THE DOUBLE INVERTED PENDULUM ON A CART USING THE NATURAL MOTION date: 2013 words: 4146 flesch: 60 summary: Second, the system is stabilized and controlled exactly into the equilibrium at the upper position by NQR control. The input variable u is therefore plotted in the same figure, based on the acceleration of the cart (4) when using NQR control and based on the NQR algorithm in the vicinity of the unstable equilibrium. keywords: cart; control; motion; pendulum; position; system cache: ap-2021.pdf plain text: ap-2021.txt item: #550 of 1656 id: ap-2022 author: Patel, Rachana U.; Deheri, G. M. title: EFFECT OF SLIP VELOCITY ON THE PERFORMANCE OF A SHORT BEARING LUBRICATED WITH A MAGNETIC FLUID date: 2013 words: 2856 flesch: 63 summary: Keywords: short bearing, magnetic fluid, slip velocity, load carrying capacity. The distribution of load carrying capacity with re- spect to magnetization µ∗ for various values of m, s, L/h2 and h2/B is presented in Figures 2–5. keywords: bearing; capacity; load; magnetic cache: ap-2022.pdf plain text: ap-2022.txt item: #551 of 1656 id: ap-2024 author: Pomprapa, Anake; Misgeld, Berno; Sorgato, Verónica; Stollenwerk, André; Walter, Marian; Leonhardt, Steffen title: ROBUST CONTROL OF END-TIDAL CO₂ USING THE H∞ LOOP-SHAPING APPROACH date: 2013 words: 4266 flesch: 57 summary: Evaluation of model structure Both the linear and nonlinear model structures are used to describe this system. 900 Acta Polytechnica 53(6):895–900, 2013 1 Introduction 2 System modeling 2.1 System configuration 2.2 Static nonlinearity 2.3 Linear affine model 2.4 Nonlinear Hammerstein model 2.5 Evaluation of model structure 3 Design of robust controller 3.1 Loop-shaping design using H infty 3.2 Step response simulation 3.3 Evaluation of closed-loop control ventilation 4 Discussion 5 Conclusion Acknowledgements References keywords: control; controller; etco2; hammerstein; linear; loop; model; shaping; system cache: ap-2024.pdf plain text: ap-2024.txt item: #552 of 1656 id: ap-2026 author: Sovják, Radoslav; Vogel, Filip; Beckmann, Birgit title: TRIAXIAL COMPRESSIVE STRENGTH OF ULTRA HIGH PERFORMANCE CONCRETE date: 2013 words: 2792 flesch: 57 summary: strength tests, as it has been found that fibres have no effect on triaxial compressive strength Triaxial compressive strength of the UHPC. keywords: compressive; concrete; loading; strength; triaxial; uhpc cache: ap-2026.pdf plain text: ap-2026.txt item: #553 of 1656 id: ap-2028 author: Vlček, Petr; Skočilas, Jan; Jirout, Tomáš title: CFD SIMULATION OF A STIRRED DISHED BOTTOM VESSEL date: 2013 words: 3302 flesch: 60 summary: The objectives of the paper are to determine complex dimensionless characteristics — power number and impeller flow rate number — by carrying out investigations of the velocity field within the stirred vessel using a simulation of the equipment. This study deals with simulation of the flow in stirred vessels. keywords: flow; impeller; model; number; order; vessel cache: ap-2028.pdf plain text: ap-2028.txt item: #554 of 1656 id: ap-2030 author: Wirth, Ulrich; Shirali, Nuri; Křístek, Vladimír; Kurth, Helmut title: HYBRID SHEARWALL SYSTEM — SHEAR STRENGTH AT THE INTERFACE CONNECTION date: 2013 words: 4618 flesch: 56 summary: shear wall and the interface behavior. In addi- tion, the failure of reinforced concrete shear walls has been found to be caused by local failure of the edge- member columns (flanges). keywords: bars; column; interface; shear; specimen; test; wall cache: ap-2030.pdf plain text: ap-2030.txt item: #555 of 1656 id: ap-2035 author: Pěnička, Michal; Hoffman, Pavel; Fořt, Ivan title: STIRRED FLUIDIZED-BED DRYER OF REGENERATED ION EXCHANGER PARTICLES date: 2014 words: 5162 flesch: 63 summary: This paper describes the intensification of the fluidized-bed drying process for regenerated spherical-shape ion exchanger particles in batch mode, achieved by a mechanical stirrer in the fluidized bed layer of dried particles. The drying rate for the first period of fluidized-bed drying is determined according to formula (10), where mS represents dry material mass and As12 is the total area of dried particles determined using formulas (11), (12), (13) and (9) for the studied periods. keywords: air; bed; drying; fig; layer; particles; period; point; process; rate; surface cache: ap-2035.pdf plain text: ap-2035.txt item: #556 of 1656 id: ap-2038 author: Beniak, Juraj; Križan, Peter; Matúš, Miloš; Kováčová, Monika title: THE OPERATING LOAD OF A DISINTEGRATION MACHINE date: 2014 words: 2211 flesch: 61 summary: Figures 3 and 4 show the relation of the measured values of torque Mk to the surface area of the sam- ple material Sm. For various surface areas of the cross-sections, the following torque measurements were taken [6,7,8]: • Mk1,1, Mk1,2, . . . keywords: area; material; sample; surface; wedge cache: ap-2038.pdf plain text: ap-2038.txt item: #557 of 1656 id: ap-2039 author: Brázdil, Marian; Šnajdárek, Ladislav; Kracík, Petr; Pospíšil, Jirí title: AUTOMATIC BIOMASS BOILER WITH AN EXTERNAL THERMOELECTRIC GENERATOR date: 2014 words: 1713 flesch: 50 summary: In the near future, thermoelectric generators could completely eliminate the dependence an automated domestic boiler system on the power supply from the electricity grid, and could ensure comfortable operation in the event of an unexpected power grid failure. Keywords: Thermoelectric generator, thermoelectricity, waste heat, biomass boiler. keywords: gas; heat; modules; power; temperature cache: ap-2039.pdf plain text: ap-2039.txt item: #558 of 1656 id: ap-204 author: Elminir, Hamdy K.; Benda, V.; Kudláček, I. title: Actual Optical and Thermal Performance of Photovoltaic Modules date: 2001 words: 8799 flesch: 57 summary: For the meshes at the gap � � � � � �� � � �Q K A h T T K A h T Ti, j, k th yz x i, j, k i 1, j, k th zy x i, j, k im m� � � �� � �� � � � � �� � � � +1, j, k th xz y i, j, k i, j+1, k th zx y i, j, km m � � � � �K A h T T K A h T T� �� � � � � �� � � � i, j 1, k th xy z i, j, k i, j, k 1 gap yx i, j, k im � � � � � � �K A h T T h A T T� �� �, j, k+1 (35) Where: hx width of mesh in x, hy width of mesh in y, hz width of mesh in z, Axz hxhz, Axy hxhy, Ayz hyhz, m material number, nx total No. of meshes in x-direction, ny total No. of meshes in y-direction and nz total No. of meshes in z-direction. 3: The electric fields at an interface ( f) sandwiched between a pair of outer (o) and inner (i) media: � � � � � �E E M N M E E o + o of E f E fi E i + i � � � � � � � � � � � � � � � � � � . keywords: angle �; degrees �; eo �; f �; h �; m �; sin �; t �; � cos; � e; � ef; � j; � k; � oi; � q; � z; � � cache: ap-204.pdf plain text: ap-204.txt item: #559 of 1656 id: ap-2041 author: Chríbik, Andrej; Polóni, Marián; Lach, Ján; Ragan, Branislav title: THE EFFECT OF ADDING HYDROGEN ON THE PERFORMANCE AND THE CYCLIC VARIABILITY OF A SPARK IGNITION ENGINE POWERED BY NATURAL GAS date: 2014 words: 2259 flesch: 47 summary: As can be seen, with an increasing content of hydrogen the mass lower heating value increases, while the fuel density de- creases, so that the final fuel energy density decreases as the proportion of hydrogen increases. As the proportion of hydrogen increases, the maxi- mum pressure value also increases, and the position of this pressure is lifted closer to TDC, or, more pre- cisely, before TDC, at an unchanged angle of ignition advance. keywords: gas; hydrogen; ignition; increases; mixture; pressure cache: ap-2041.pdf plain text: ap-2041.txt item: #560 of 1656 id: ap-2043 author: Gajdoš, Matúš title: LABORATORY EQUIPMENT FOR AUTOTHERMAL REFORMING OF ORGANIC MATTER IN SUPERCRITICAL WATER date: 2014 words: 1911 flesch: 56 summary: Suitable input materials are mainly industrial waste or biomass with high water content. Fluid water in this state is called supercritical water (SCW), and values of its physical properties are included among the values of such properties for liquid phase and gaseous phase. keywords: pressure; reactor; temperature; water cache: ap-2043.pdf plain text: ap-2043.txt item: #561 of 1656 id: ap-2044 author: Horvat, Frantisek; Cekan, Michal; Soltes, Lukas; Biath, Peter; Hucko, Branislav; Jedinak, Igor title: CURRENT WAYS TO HARVEST ENERGY USING A COMPUTER MOUSE date: 2014 words: 1571 flesch: 54 summary: Possible energy harvesting systems, PVF2 – piezomaterial, LT – circuit required for EH, C – ca- pacitor, B – battery, S – input to mouse system. in an open cavity of the mouse body, as is also shown in Figure 4. Studies have already been made for the potential application of EH circuits based on a piezomaterial, and have shown the possibility of applying it for battery management of cardiostimulators [2]. keywords: circuit; energy; mouse; piezomaterial cache: ap-2044.pdf plain text: ap-2044.txt item: #562 of 1656 id: ap-2045 author: Hrnčířová, Michaela; Špiláček, Michal; Pospíšil, Jiří title: SIZE ANALYSIS OF SOLID PARTICLES AT THE EXPERIMENTAL DEVICE FOR MULTI-STAGE BIOMASS COMBUSTION date: 2014 words: 1946 flesch: 65 summary: The device utilizes laser diffraction for particle size analysis. The laser analyser shows the results on data sheets, where the frequency of the corresponding range of particle sizes to the whole sample is displayed. keywords: device; figure; laser; particles; results; size cache: ap-2045.pdf plain text: ap-2045.txt item: #563 of 1656 id: ap-2046 author: Kováčová, Monika; Matúš, Miloš; Križan, Peter; Beniak, Juraj title: DESIGN THEORY FOR THE PRESSING CHAMBER IN THE SOLID BIOFUEL PRODUCTION PROCESS date: 2014 words: 3604 flesch: 68 summary: Forces in cylindrical pressing chamber. − d2 2)− dpa d2 2 = pa(2 tanα dx d2 + 4 tan2 αdx2)− dpa d2 2. keywords: chamber; pressing cache: ap-2046.pdf plain text: ap-2046.txt item: #564 of 1656 id: ap-2048 author: Križan, Peter; Matúš, Miloš; Beniak, Juraj; Kováčová, Monika title: STABILIZATION TIME AS AN IMPORTANT PARAMETER AFTER DENSIFICATION OF SOLID BIOFUELS date: 2014 words: 2945 flesch: 53 summary: In the ex- periment we can distinguish between two basic types of briquette dilatation: Dilatation with decreasing briquette density — when the diameter and the length of the briquette increase and the weight of the briquette decreases (associated effects are crack formation, material fragmentation and briquette decomposition); Dilatation with increasing briquette density — when the diameter and length of the briquette de- crease and the weight of the briquette increases (an associated effect is briquette shrinkage and in- creased hardness); Both of these types of dilatation effects are signifi- cantly influenced by the type of pressed material, the material moisture, the input fraction size, the applied compacting pressure, the applied pressing tempera- ture during pressing, and the duration of the briquette holding time. It is very important to consider the stabilization time or briquette dilatation mainly due to the changes in briquette density. keywords: briquette; compacting; density; dilatation; pressure; stabilization cache: ap-2048.pdf plain text: ap-2048.txt item: #565 of 1656 id: ap-2051 author: Lisý, Martin; Baláš, Marek; Špiláček, Michal; Skála, Zdenek title: TECHNICAL AND ECONOMIC OPTIMIZATION OF COGENERATION TECHNOLOGY USING COMBUSTION AND GASIFICATION date: 2014 words: 4955 flesch: 62 summary: 88–95 51 http://www.tzb-info.cz/2834-orc-technologie-v-realizaci-ii-trhove-sviny-srovnani http://www.tzb-info.cz/2834-orc-technologie-v-realizaci-ii-trhove-sviny-srovnani Acta Polytechnica 54(1):42–51, 2014 1 Introduction — microcogeneration 2 Design and balance calculations for a microcogeneration unit 2.1 Partial evaluation of basic solutions 2.2 Specification and extension of the designed solutions 2.3 Overall evaluation and a comparison of the solutions 3 Economic comparison of the proposed solutions 4 Overall evaluation and a comparison between the options 5 Conclusions Acknowledgements References A decrease in flue gas temperature was achieved via higher amounts of excess air during the combustion process; however, this requires bigger dimensions of the exchanger. keywords: air; efficiency; energy; flue; flue gas; gas; heat; solutions; technology cache: ap-2051.pdf plain text: ap-2051.txt item: #566 of 1656 id: ap-2053 author: Matúš, Miloš; Križan, Peter; Kováčová, Monika; Beniak, Juraj title: THE INFLUENCE OF SIZE FRACTION ON THE COMPRESSIBILITY OF PINE SAWDUST AND THE EFFECTIVENESS CRITERION FOR DENSIFICATION date: 2014 words: 3149 flesch: 52 summary: The basic parameter describing the densification process of particulate matter is its compressibility, quantified by the coefficient of compressibility. Raw material (dendro- mass or phytomass) treated in this way has properties similar to those of particulate matter. keywords: compressibility; densification; fraction; matter; particulate; sawdust cache: ap-2053.pdf plain text: ap-2053.txt item: #567 of 1656 id: ap-2055 author: Onderová, Iveta; Kolláth, Ludovít; Ploskuňáková, Lucia title: EXPERIMENTAL VERIFICATION OF THE STRUCTURAL AND TECHNOLOGICAL PARAMETERS OF THE PKS date: 2014 words: 2211 flesch: 46 summary: Unidirectional position repeatability is calculated as follows: RP = l̄ + 3Sl, where l̄ = 1 n n∑ j=1 lj , lj = √ (xj − x̄)2 + (yj − ȳ)2 + (zj − z̄)2, Sl Positioning accuracy and position repeatability 4.1. keywords: accuracy; position; positioning; telescopic cache: ap-2055.pdf plain text: ap-2055.txt item: #568 of 1656 id: ap-2057 author: Onderová, Iveta; Šooš, Lubomír title: ANALYSIS OF PARAMETERS AFFECTING THE QUALITY OF A CUTTING MACHINE date: 2014 words: 1950 flesch: 45 summary: Scheme of measurement axes Y . Scheme of measurement axes X. out in both directions, i.e. from the right (marked as −) and from the left (marked as +). keywords: accuracy; axis; machine; positioning cache: ap-2057.pdf plain text: ap-2057.txt item: #569 of 1656 id: ap-2059 author: Štefanica, Jiří; Hrdlička, Jan title: NOx PREDICTION FOR FBC BOILERS USING EMPIRICAL MODELS date: 2014 words: 3164 flesch: 55 summary: Authors of NOX prediction models for FBC usually combine a kinetic modelling approach with FBC hydrodynamic models. Combustion parameters. keywords: boilers; coal; combustion; fbc; fuel; model; nox; parameters; prediction cache: ap-2059.pdf plain text: ap-2059.txt item: #570 of 1656 id: ap-206 author: Hošková, Š.; Kapičková, O.; Trtík, K.; Vodák, F. title: Effect of Thermal Cycling on the Strength and Texture of Concrete for Nuclear Safety Structures date: 2001 words: 2027 flesch: 52 summary: These are the only similar factors: TEMELÍN concrete belongs to class B 40, while PENLY concrete is prepared as so-called high-resist- ance concrete (the uniaxial compression strength is higher than 60 MPa) Acta Polytechnica Vol. 41 No. 2/2001 17 Effect of Thermal Cycling on the Strength and Texture of Concrete for Nuclear Safety Structures Š. Hošková, O. Kapičková, K. Trtík, F. Vodák The effect of thermal cycling (freezing and thawing) on the texture and strength of two types of concrete is studied: keywords: concrete; cycles; number; strength; temelín; volume cache: ap-206.pdf plain text: ap-206.txt item: #571 of 1656 id: ap-2061 author: Skopec, Pavel; Hrdlička, Jan; Kaválek, Michal title: SPECIFIC EMISSIONS FROM BIOMASS COMBUSTION date: 2014 words: 2921 flesch: 56 summary: Developments in boiler construc- tion leading to better efficiency and lower emissions should have been reflected in lower specific emissions in the EEA data, which was gathered six years later than the CHMI data. Keywords: specific emissions, biomass combustion, small-scale boilers. keywords: boiler; combustion; emissions; fuel; pellets; value; wood cache: ap-2061.pdf plain text: ap-2061.txt item: #572 of 1656 id: ap-2064 author: Ramírez, José Luis; Rubiano, Gustavo Nevardo title: BIPERIODIC FIBONACCI WORD AND ITS FRACTAL CURVE date: 2015 words: 5756 flesch: 86 summary: Keywords: Fibonacci word, biperiodic Fibonacci word, biperiodic Fibonacci curve. The words fn are called finite Fibonacci words. keywords: f(a; fibonacci; word cache: ap-2064.pdf plain text: ap-2064.txt item: #573 of 1656 id: ap-2067 author: Kratky, Lukas; Jirout, Tomáš title: IMPROVING SPECIFIC POWER CONSUMPTION FOR MECHANICAL MIXING OF THE FEEDSTOCK IN A BIOGAS FERMENTER BY MECHANICAL DISINTEGRATION OF LIGNOCELLULOSE BIOMASS date: 2014 words: 4363 flesch: 59 summary: Keywords: fermenter, lignocellulose biomass, mixing, specific power consumption, wheat straw. Dependence of power consumption on impeller speed. keywords: batch; consumption; impeller; mixing; power; power consumption; straw cache: ap-2067.pdf plain text: ap-2067.txt item: #574 of 1656 id: ap-2070 author: Loufek, Jan; Královcová, Jiřina title: SIMULATION OF RADIATIVE HEAT FLUX DISTRIBUTION UNDER AN INFRARED HEAT EMITTER date: 2015 words: 3998 flesch: 53 summary: Keywords: radiative heat transfer; simulations; optimization; heat flux distribution. This tool is helpful in providing heat flux distribution functions under various configurations (heater reflector shape, heated surface shape and inclination, distance) and under various input parameters (temperature, emissivity). keywords: distribution; figure; flux; heat; heat flux; model; reflector; surface; temperature cache: ap-2070.pdf plain text: ap-2070.txt item: #575 of 1656 id: ap-2073 author: Bagchi, Bijan; Modak, Subhrajit; Panigrahi, Prasanta K. title: TRACKING DOWN LOCALIZED MODES IN PT-SYMMETRIC HAMILTONIANS UNDER THE INFLUENCE OF A COMPETING NONLINEARITY date: 2014 words: 3662 flesch: 65 summary: Class II solutions On the other hand, if we choose the extended Rosen- Morse potential to have the form V (x) = −a(a+ 1) sech2 x− V1 sech 2 κ x, W (x) = 2b tanh x, κ ∈ R \ {0} (8) then Eq. (3) enjoys a solution Φ(x) = Φ0 sech 1 κ x eiµx (9) 80 vol. The figure at the right corresponds to the evaluation of Class II solution under the same parametrizations. keywords: doi; lett; nonlinear; phys; potential; rev cache: ap-2073.pdf plain text: ap-2073.txt item: #576 of 1656 id: ap-2074 author: Bishop, Raymond F.; Znojil, Miloslav title: THE COUPLED-CLUSTER APPROACH TO QUANTUM MANY-BODY PROBLEM IN A THREE-HILBERT-SPACE REINTERPRETATION date: 2014 words: 6607 flesch: 56 summary: Sub- sequently, in section 3 an overall review of the key ideas of CCM constructions will be recalled, and their reinterpretation within the general THS scheme will be described. doi: 10.1103/PhysRevA.55.2686 92 http://dx.doi.org/10.1016/0003-4916(83)90284-1 http://dx.doi.org/10.1103/PhysRevA.36.2519 http://dx.doi.org/10.1007/BF01119617 http://dx.doi.org/10.1016/0003-4916(92)90284-S http://dx.doi.org/10.3842/SIGMA.2009.001 http://dx.doi.org/10.1088/1751-8113/41/24/244026 http://dx.doi.org/10.1016/0375-9474(71)90122-9 http://dx.doi.org/10.1103/PhysRevLett.80.5243 http://dx.doi.org/10.1088/0034-4885/70/6/r03 http://dx.doi.org/10.1088/1751-8113/40/32/R01 http://dx.doi.org/10.1142/S0219887810004816 http://dx.doi.org/10.1088/1751-8113/44/41/415305 http://dx.doi.org/10.1088/1751-8113/42/15/153001 http://dx.doi.org/10.1023/B:CJOP.0000044002.05657.04 http://dx.doi.org/10.1038/nphys1515 http://dx.doi.org/10.1103/PhysRevA.83.042111 http://dx.doi.org/10.1103/PhysRevA.36.2539 http://dx.doi.org/10.1007/978-3-642-61330-2_4 http://dx.doi.org/10.1103/PhysRevA.55.2686 Acta Polytechnica 54(2):85–92, 2014 1 Introduction 2 THS representation of a quantum system 2.1 Inspiration: Fourier transform 2.2 Non-unitary mappings Omega = exp(S) 2.2.1 Crypto-Hermitian IBM method 2.2.2 PT-symmetric models 2.2.3 Towards the complex energy spectra. 3 THS interpretation of CCM constructions 3.1 Brief introduction to CCM constructions 3.2 CCM–THS correspondence 4 Discussion 4.1 A CCM–THS fusion? 4.2 Towards the infinite-dimensional Hilbert spaces 4.3 Outlook Acknowledgements References keywords: ccm; cluster; doi; hamiltonian; hermitian; hilbert; operator; quantum; space; state; ths cache: ap-2074.pdf plain text: ap-2074.txt item: #577 of 1656 id: ap-2077 author: Esina, Anna I.; Shafarevich, Andrei I. title: SEMICLASSICAL ASYMPTOTICS OF EIGENVALUES FOR NON-SELFADJOINT OPERATORS AND QUANTIZATION CONDITIONS ON RIEMANN SURFACES date: 2014 words: 3472 flesch: 61 summary: [13] A. A. Shkalikov. doi: 10.4213/im399 [16] A. V. D’yachenko, A. A. Shkalikov. keywords: equation; graph; operator; spectrum; surface cache: ap-2077.pdf plain text: ap-2077.txt item: #578 of 1656 id: ap-2078 author: Eleuch, Hichem; Rotter, Ingrid title: EXCEPTIONAL POINTS IN OPEN AND PT-SYMMETRIC SYSTEMS date: 2014 words: 5895 flesch: 67 summary: Exceptional points (EPs) determine the dynamics of open quantum systems and cause also PT symmetry breaking in PT symmetric systems. Keywords: exceptional points, open quantum systems; PT symmetry breaking, dynamical phase transition, non-Hermitian quantum physics, phase rigidity. keywords: eigenfunctions; eigenvalues; eps; quantum; states; symmetric; system cache: ap-2078.pdf plain text: ap-2078.txt item: #579 of 1656 id: ap-208 author: Kalousková, M.; Novotná, E.; Šejnoha, J. title: Reliability - Based Designof Precast Buildings date: 2001 words: 3566 flesch: 56 summary: The corresponding stiffness matrix [KBT] of the equiva- lent beam and truss element (see Fig. 5) is given by � � � � � �K E A h E I E Expanding the function g into the Taylor series up to the second order terms and introducing certain orthogonal transformations, the failure surface can be written as: � �� �g U Un keywords: b c; c c; fig; joints; � � cache: ap-208.pdf plain text: ap-208.txt item: #580 of 1656 id: ap-2081 author: Fernández, Francisco M. title: ON THE REAL MATRIX REPRESENTATION OF PT-SYMMETRIC OPERATORS date: 2014 words: 2269 flesch: 66 summary: There- fore 〈ϕ2n|p̂2|ϕ2m〉 = 〈φ2n|p̂2|φ2m〉 〈ϕ2n|p̂2|ϕ2m+1〉 = 〈φ2n|p̂2|φ2m+1〉 = 0 〈ϕ2m+1|p̂2|ϕ2n〉 = 〈φ2m+1|p̂2|φ2n〉 = 0 〈ϕ2n+1|p̂2|ϕ2m+1〉 = 〈φ2n+1|p̂2|φ2m+1〉 (23) and 〈ϕ2n|V |ϕ2m〉 = 〈φ2n| 0 and xR = τ − θ > 0. keywords: ads3; hole; point; so(1; so(2 cache: ap-2097.pdf plain text: ap-2097.txt item: #589 of 1656 id: ap-2099 author: Prešnajder, Peter; Gáliková, Veronika; Kováčik, Samuel title: LAPLACE-RUNGE-LENZ VECTOR IN QUANTUM MECHANICS IN NONCOMMUTATIVE SPACE date: 2014 words: 5111 flesch: 67 summary: NC operators revisited Now we rewrite the Hamiltonian, the velocity operator and the NC LRL vector in terms of the new auxiliary operators which have been introduced. The Hilbert space of wave functions in NC space and the NC generalizations of important operators (Hamil- tonian, angular momentum, coordinate and velocity) are introduced. keywords: lrl; operators; space; vector cache: ap-2099.pdf plain text: ap-2099.txt item: #590 of 1656 id: ap-210 author: Tesař, V. title: Two-equation Turbulence Model Similarity Solution of the Axisymmetric Fluid Jet date: 2001 words: 10242 flesch: 55 summary: The discussions presented e.g. in [1] and [2], supported by experimental verifications, indicate that there is � �1 (23) and from constancy of axial momentum flow rate [1] there is � � �1. . It may be decomposed into: � �P� �t t� �� ��w 2 2 (2) where the first term, in the present two-dimensional context equal to�w � � � �1 1 2 2w w , is a scalar product of two vectors, � and w. keywords: equation; f �; fig; jet; model; rate �; solution; turbulence; velocity; z �; � c; � e; � p; � t; � u; � w; � � cache: ap-210.pdf plain text: ap-210.txt item: #591 of 1656 id: ap-2101 author: Turgut, Osman Teoman Turgut Teoman; Eröncel, Cem title: EXACT RENORMALIZATION GROUP FOR POINT INTERACTIONS date: 2014 words: 8281 flesch: 77 summary: = ∫ R dξ′E0(z0, τ ′, ξ′)E0(z0, τ ′, ξ′) gΛ(τ, τ ′)τ ′ sinh(πτ ′)ϑ(τ, τ ′; ξ) + dΛ gΛ(τ,Λ)Λ sinh(πΛ)ϑ(τ,Λ; ξ) ) , (3.44) and for τ = Λ we obtain( Λ2 + a2) φ̃(Λ, ξ) = 2 π2 (∫ Λ−dΛ 0 dτ ′ gΛ(Λ, τ ′)τ ′ sinh(πτ ′)ϑ(Λ, τ ′; ξ) + dΛ gΛ(Λ,Λ)Λ sinh(πΛ)ϑ(Λ,Λ; ξ) ) . keywords: group; renormalization cache: ap-2101.pdf plain text: ap-2101.txt item: #592 of 1656 id: ap-212 author: Böszörményi, G.; Böszörményi, L. title: Some Problems of the Integration of Heat Pump Technology into a System of Combined Heat and Electricity Production date: 2001 words: 2865 flesch: 51 summary: If as planned, geothermal heat is fed directly into the district heating network the efficiency would be greatly reduced. In winter, only one housing estate in Košice city would be supplied with heat power (~65 MW) by the heat pump. keywords: energy; heat; heating; pump; stage; steam cache: ap-212.pdf plain text: ap-212.txt item: #593 of 1656 id: ap-2122 author: Dorner, Daniela; Biland, A.; Bretz, T.; Buss, J.; Einecke, S.; Eisenacher, D.; Hildebrand, D.; Knoetig, M. L.; Krähenbühl, T.; Lustermann, W.; Mannheim, K.; Meier, K.; Neise, D.; Overkemping, A.-K.; Paravac, A.; Pauss, F.; Rhode, W.; Ribordy, M.; Steinbring, T.; Temme, F.; Thaele, J.; Vogler, P.; Walter, R.; Weitzel, Q.; Zänglein, M. title: FACT — STATUS AND FIRST RESULTS date: 2014 words: 2682 flesch: 64 summary: FACT — First G-APD Cherenkov Telescope With the aim to monitor bright active galactic nu- clei (AGN) in the very high energy (VHE) range, the First G-APD Cherenkov Telescope (FACT) was designed for stable and robust operation. Inexpensive, small telescopes like FACT are ideal systems for extended monitoring of bright TeV blazars and multi-wavelength campaigns. keywords: cherenkov; collaboration; data; fact; light; telescope cache: ap-2122.pdf plain text: ap-2122.txt item: #594 of 1656 id: ap-2124 author: Eikmann, Wiebke; Wilms, Jörn; Smith, Randall K.; Lee, Julia C. title: X-RAY TRANSMISSION AND REFLECTION THROUGH A COMPTON-THICK MEDIUM VIA MONTE-CARLO SIMULATIONS date: 2014 words: 2193 flesch: 63 summary: The shape of the fluorescent lines also changes since scattered line photons form several Compton-shoulders which are very prominent especially for Compton-thick sources. The first term describes the number of line photons that was created within τ and the second term describes the subsequent absorption. keywords: absorption; compton; geometry; line; scattering; spectrum cache: ap-2124.pdf plain text: ap-2124.txt item: #595 of 1656 id: ap-2125 author: Helmich, Martin title: STATIC TESTS OF UNCONVENTIONAL PROPULSION UNITS FOR ULTRALIGHT AIRPLANES date: 2014 words: 3309 flesch: 60 summary: Dimensionless thrust at various engine speeds, depending on the diameter of the exit nozzle. We performed experiments to verify the propulsion functionality and a measurement procedure to determine the available thrust of the propulsion unit and its dependence on engine speed. keywords: channel; engine; nozzle; outlet; propulsion; speed; thrust; unit cache: ap-2125.pdf plain text: ap-2125.txt item: #596 of 1656 id: ap-2127 author: Karas, Vladimír; Bakala, Pavel; Török, Gabriel; Dovčiak, Michal; Wildner, Martin; Wzientek, Dalibor; Šrámková, Eva; Abramowicz, Marek; Goluchová, Kateřina; Mazur, Grzegorz P.; Vincent, Frédéric H. title: DISTINGUISHING BETWEEN SPOT AND TORUS MODELS OF HIGH-FREQUENCY QUASIPERIODIC OSCILLATIONS date: 2014 words: 3787 flesch: 54 summary: On the other hand, the LOFT PDS clearly reveal the presence/absence of the harmonics additional to the 3:2 peaks representing the signature of spot motion. Conclusions We can identify the signatures of spot motion mostly with the harmonic content of the observable signal. keywords: doi; figure; frequency; pds; rxte; signal; spot; torus cache: ap-2127.pdf plain text: ap-2127.txt item: #597 of 1656 id: ap-2128 author: Kutílek, Patrik; Hýbl, Jan; Mareš, Jakub; Socha, Vladimír; Smrčka, Pavel title: A MYOELECTRIC PROSTHETIC ARM CONTROLLED BY A SENSOR-ACTUATOR LOOP date: 2014 words: 5960 flesch: 62 summary: Keywords: prosthetic arm; electromyography; sensor system; occupancy grid mapping; fuzzy logic. [26, 27]: Map(x, y, z)′ = ps Map(x, y, z) ps Map(x, y, z) + (1− ps)(1−Map(x, y, z)) , where Map(x, y, z)′ represents an updated value of the cell in position [x, y, z] after integration of a new sensory reading into the map, Map(x, y, z) represents the previous value, and ps = P [ Map(x, y, z) = OCC ∣∣ {r}] is the probability that the cell is occupied (OCC) according to sensor range reading r, i.e., the sensor model (Fig. 4). keywords: arm; control; emg; envelope; map; myoelectric; pds; sensor; signal; system cache: ap-2128.pdf plain text: ap-2128.txt item: #598 of 1656 id: ap-2129 author: Majcher, Ariel; Cwiek, Arkadiusz; Cwiok, Mikołaj; Mankiewicz, Lech; Zaremba, Marcin; Zarnecki, Aleksander F. title: “PI OF THE SKY” OFF-LINE EXPERIMENT WITH GLORIA date: 2014 words: 2479 flesch: 58 summary: Demonstrator experiments GLORIA allows users to run experiments in the net- work. To present the network capabilities and the perfor- mance of the tools, demonstrator experiments have been created in both categories. keywords: analysis; data; gloria; line; luiza; sky cache: ap-2129.pdf plain text: ap-2129.txt item: #599 of 1656 id: ap-2131 author: Meier, Katja; Biland, A.; Bretz, T.; Buss, J.; Dorner, D.; Einecke, S.; Eisenacher, D.; Hildebrand, D.; Knoetig, M. L.; Krähenbühl, T.; Lustermann, W.; Mannheim, K.; Neise, D.; Overkemping, A.-K.; Paravac, A.; Pauss, F.; Rhode, W.; Ribordy, M.; Steinbring, T.; Temme, F.; Thaele, J.; Vogler, P.; Walter, R.; Weitzel, Q.; Zänglein, M. title: FACT — LONGTERM MONITORING OF BRIGHT TeV BLAZARS date: 2014 words: 2270 flesch: 68 summary: The FACT collaboration was founded in 2008 with the aim to examine these silicon photodectectors for use in Cherenkov telescopes and to monitor bright TeV blazars in the longterm. One major task of the large currently operating Cherenkov telescopes, is to search for new sources. keywords: blazars; cherenkov; fact; longterm; markarian; monitoring; telescope cache: ap-2131.pdf plain text: ap-2131.txt item: #600 of 1656 id: ap-2132 author: Oberhuber, Tomáš; Kučera, Slavomír; Loucký, Jakub; Súkupová, Lucie; Tintěra, Jaroslav title: SEGMENTING TAGGED CARDIAC MRI DATA USING A LOCAL VARIANCE FILTER date: 2014 words: 3109 flesch: 67 summary: Keywords: image segmentation, medical data processing, tagged MRI data, local variance filter, graph cuts. Detection of the ventricles from the tagged MRI data In image segmentation, we aim to find one or more regions in the image such that their borders are de- fined by the edges in the image, and the intensity function is homogeneous inside this region. keywords: data; graph; grid; image; method; mri; segmentation cache: ap-2132.pdf plain text: ap-2132.txt item: #601 of 1656 id: ap-2135 author: Ondruška, Michal; Drienovský, Marián; Čička, Roman; Marônek, Milan; Náplava, Antonín title: OPTIMIZING THE WELDING OF PLASTICS WITH THE USE OF DIFFERENTIAL SCANNING CALORIMETRY AND THERMOGRAVIMETRIC ANALYSIS date: 2014 words: 2230 flesch: 55 summary: Thermal welding methods have a number of advan- tages and disadvantages. The measured values can determine the optimal temperature parameters for plastic welding. keywords: analysis; atmosphere; dsc; plastics; sample; welding cache: ap-2135.pdf plain text: ap-2135.txt item: #602 of 1656 id: ap-2137 author: Opiela, Rafał; Małek, Katarzyna; Mankiewicz, Lech; Siudek, Małgorzata; Sokołowski, Marcin; Zarnecki, Aleksander Filip title: PHOTOMETRIC ANALYSIS OF PI OF THE SKY DATA date: 2014 words: 3077 flesch: 62 summary: Histograms of the percentage of bad catalog stars in a single frame. The detector response is correlated with the spectral type (B − V or J −K) of catalog stars. keywords: catalog; data; quality; sky; stars cache: ap-2137.pdf plain text: ap-2137.txt item: #603 of 1656 id: ap-2138 author: Sławomir, Wojnar; Rohal-Ilkiv, Boris; Šimončic, Peter; Honek, Marek; Jozef, Csambál title: IN-CYLINDER MASS FLOW ESTIMATION AND MANIFOLD PRESSURE DYNAMICS FOR STATE PREDICTION IN SI ENGINES date: 2014 words: 5443 flesch: 65 summary: Air mass flow prediction on a desired amount of assumed intake strokes. no. 0/0000 Example of an Article with a Long Title 100 14.7 1514 50 NOX CO HC C on ve rs io n % Air fuel ratio (-) 7 Figure 1. keywords: air; control; cylinder; dynamics; engine; estimation; flow; fuel; intake; manifold; mass; model; pressure cache: ap-2138.pdf plain text: ap-2138.txt item: #604 of 1656 id: ap-214 author: Elminir, Hamdy K.; Rahuma, U. A.; Benda, V. title: Comparison Between Atmospheric Turbidity Coefficients of Desert and Temperate Climates date: 2001 words: 8722 flesch: 58 summary: The beam transmittance may be expected to follow a Bougurer’s Law dependence on atmospheric extinction and air mass, such that: � �� �b � � �exp m . TL Prague (9) The relation of Equation (9) is similar to the model reported for Avignon, France: � � � �0103 0052. . keywords: air; atmosphere; czech; data; energy; factor; helwan; radiation; turbidity; values; vol; � � cache: ap-214.pdf plain text: ap-214.txt item: #605 of 1656 id: ap-2140 author: Šimon, Vojtěch title: LOW-MASS BINARY X-RAY SOURCES: MONITORING WITH VARIOUS SATELLITES date: 2014 words: 4441 flesch: 72 summary: A very hard X-ray band like the one in BAT/Swift sometimes maps quite a different activity (probably coming from a different spectral component) than that detected by monitors observing in soft X-ray band. When some critical mass density of the disk is reached, strong accretion of matter from the disk onto the central com- pact object triggers the outburst, hence a fast increase of X-ray intensity keywords: asm; band; bat; data; monitors; outburst; ray; rxte; time cache: ap-2140.pdf plain text: ap-2140.txt item: #606 of 1656 id: ap-2143 author: Stuchlik, Zdenek; Schee, Jan title: ON OBSERVATIONAL PHENOMENA RELATED TO KERR SUPERSPINARS date: 2014 words: 2698 flesch: 60 summary: We conclude that near-extreme superspinning Kerr geometries are much more efficient for the occurrence of ultra-high energy collisions then the vicinity of the 255 Zdenek Stuchlik, Ultra-high energy collisions in the superspinning kerr geometry. keywords: energy; keplerian; kerr; superspinars cache: ap-2143.pdf plain text: ap-2143.txt item: #607 of 1656 id: ap-2144 author: Shershunova, Ekaterina Alexandrovna; Malashin, Maxim; Moshkunov, Sergei; Khomich, Vladislav title: DIFFUSE DBD IN ATMOSPHERIC AIR AT DIFFERENT APPLIED PULSE WIDTHS date: 2015 words: 2000 flesch: 64 summary: As a rule, diffuse high-current DBD in atmospheric air is realized by applying voltage pulses of submi- crosecond duration to the electrodes. Many re- searchers have shown that the diffuse mode of DBD with two discharge peaks per one voltage pulse can be ignited at low pressure, and even at atmospheric pressure, in gases such as neon, argon and helium by applying high voltage pulses with short durations to the electrodes keywords: air; current; dbd; discharge; pulse; voltage cache: ap-2144.pdf plain text: ap-2144.txt item: #608 of 1656 id: ap-2147 author: Domonkos, Mária; Ižák, Tibor; Štolcová, Lucie; Proška, Jan; Demo, Pavel; Kromka, Alexander title: STRUCTURING OF DIAMOND FILMS USING MICROSPHERE LITHOGRAPHY date: 2014 words: 2538 flesch: 65 summary: For example, increasing the surface area-to-volume ratio of diamond films improves the field-emission proper- ties by introducing the enhancement effect of the local field near the tips Generally, various nanostruc- tures can be fabricated from diamond films known as nanowires, nanorods, nanoneedles, etc. keywords: diamond; etching; films; mask; plasma; structuring cache: ap-2147.pdf plain text: ap-2147.txt item: #609 of 1656 id: ap-2155 author: Indrová, Kateřina; Prošek, Zdeněk; Topič, Jaroslav; Ryparová, Pavla; Nežerka, Václav; Tesárek, Pavel title: MECHANICAL PROPERTIES OF PVA NANOFIBER TEXTILES WITH INCORPORATED NANODIAMONDS, COPPER AND SILVER IONS date: 2015 words: 4705 flesch: 54 summary: Keywords: PVA nanofiber textiles; nanodiamonds; ions; mechanical properties; tensile strength. Our study investigates PVA nanofiber textiles based on an aqueous solution for their specific properties and with a view to low cost production. keywords: ions; nanofiber; ndp; properties; pva; solution; textiles; vol cache: ap-2155.pdf plain text: ap-2155.txt item: #610 of 1656 id: ap-2156 author: Kulveit, Jan title: ISING MODEL SIMULATIONS AS A TESTBED OF NUCLEATION THEORY date: 2015 words: 3852 flesch: 57 summary: 3. Improvements to nucleation theory In the development of nucleation theory, there is obvi- ously a huge space for extensions and improvements of classical theory. Testbed systems and results Even in a simulation, when modeling real systems us- ing molecular dynamics, nucleation theory gets tested along with various other simulation properties (e.g., a description of interatomic forces). keywords: clusters; energy; ising; model; nucleation; phase; physical; rate; review; theory cache: ap-2156.pdf plain text: ap-2156.txt item: #611 of 1656 id: ap-2159 author: Prošek, Zdeněk; Králík, Vlastimil; Topič, Jaroslav; Nežerka, Václav; Indrová, Kateřina; Tesárek, Pavel title: MICROSTRUCTURE DESCRIPTION AND MICROMECHANICAL PROPERTIES OF SPRUCE WOOD date: 2015 words: 6435 flesch: 57 summary: Experimental micromechanical characterisation of wood cell walls. doi:10.1007/s00339–004–2864-y [15] Gindl, W. and Schöberl, T.: The significance of the elastic modulus of wood cell walls obtained from nanoindentation measurements. keywords: cell; earlywood; figure; indentation; latewood; modulus; nanoindentation; properties; stiffness; vol; wall; wood cache: ap-2159.pdf plain text: ap-2159.txt item: #612 of 1656 id: ap-216 author: Svoboda, V.; Šiktancová, D. title: Determining the Permeable Efficiency of Elements in Transport Networks date: 2001 words: 1774 flesch: 43 summary: Keywords: the transport networks, elements in transport network, disintegration of transport flow in transport networks, permeability of elements in transport network, permeability of networks, determining of the permeability of edges, deterministic and stochastic work regimes, systems of queuing theory, a transcendental equation. In order to determine the permeability of the trans- port net element with a stochastic work regime, operations research methods were mainly used, in particular queuing theory for typical service systems and stock theory for systems where the transport sets are made up of transport elements. keywords: network; permeability; system; time; transport cache: ap-216.pdf plain text: ap-216.txt item: #613 of 1656 id: ap-2160 author: Remes, Zdeněk; Novak, Tomas; Stuchlik, Jiri; Stuchlikova, The-ha; Dřínek, Vladislav; Fajgar, Radek; Zhuravlev, Konstantin title: INFRARED PHOTOLUMINESCENCE SPECTRA OF PBS NANOPARTICLES PREPARED BY LANGMUIR–BLODGETT AND LASER ABLATION METHODS date: 2014 words: 2076 flesch: 51 summary: The infrared photoluminescence spectra of PbS nanoparticles prepared by the Langmuir-Blodgett technique show higher photoluminescence intensity and a shift to shorter wavelengths than the infrared photolumines- cence spectra of PbS nanoparticles prepared by laser ablation from a PbS target. We also have proved that PbS nanoparticles prepared in the form of thin layers have high stability. keywords: ablation; infrared; laser; nanoparticles; pbs; photoluminescence; spectra cache: ap-2160.pdf plain text: ap-2160.txt item: #614 of 1656 id: ap-2164 author: Sveshnikov, Alexey; Demo, Pavel; Kožíšek, Zdeněk; Tichá, Petra title: SHAPE OF A NUCLEUS GROWING ON STRONGLY CURVED SURFACE OF A NANOFIBER date: 2014 words: 2094 flesch: 51 summary: This assumption leads to the conclusion that growing nuclei have the shape of a spherical cap. Taking into account huge amount of money paid every year for restoration of surface of civil constructions every factor which can reduce the rate of required treatment will lead to appreciable savings. keywords: nanofiber; nucleation; nucleus; shape; surface cache: ap-2164.pdf plain text: ap-2164.txt item: #615 of 1656 id: ap-2166 author: Topič, Jaroslav; Prošek, Zdeněk; Indrová, Kateřina; Plachý, Tomáš; Nežerka, Václav; Kopecký, Lubomír; Tesárek, Pavel title: EFFECT OF PVA MODIFICATION ON PROPERTIES OF CEMENT COMPOSITES date: 2015 words: 7376 flesch: 63 summary: Discussion The reduced workability of PVA-rich cement pastes is caused by the high viscosity of the PVA solution. The increase in PVA-rich samples (DS), in comparison with PVA-poor samples (BS) as demonstrated in Figure 14, confirms the hardening mechanism theory proposed by some authors [4, 7, 8]. keywords: cement; et al; figure; modulus; pastes; properties; pva; sample; strength; vol; water cache: ap-2166.pdf plain text: ap-2166.txt item: #616 of 1656 id: ap-2169 author: Gromada, Daniel; Pošta, Severin title: AUTOMORPHISMS OF ALGEBRAS AND ORTHOGONAL POLYNOMIALS date: 2014 words: 2412 flesch: 73 summary: [HP−1]jk = (N − 2k)[P−1]kj , construct a recurrence relation j[P−1]k,j−1 − (N − 2k)[P−1]k,j + (N − j)[P−1]k,j+1 = 0 (2) and compare it with general recurrence for Krawt- chouk polynomials, j(p− 1)Kj−1(x)− ( j(p− 1) + N − 1 0 . . keywords: algebra; polynomials cache: ap-2169.pdf plain text: ap-2169.txt item: #617 of 1656 id: ap-2173 author: Karas, Vladimír; Kopáček, Ondřej; Kunneriath, Devaky title: OBLIQUE MAGNETIC FIELDS AND THE ROLE OF FRAME DRAGGING NEAR ROTATING BLACK HOLE date: 2014 words: 11813 flesch: 51 summary: Keywords: accretion; black holes; gravitation; magnetic fields. Their dynamic properties (e.g., resonances) will therefore leave their imprint on the observed spectra. 399 V. Karas, O. Kopáček, D. Kunneriath, J. Hamerský Acta Polytechnica The role of magnetic fields near strongly gravitating objects has been the subject of many investigations keywords: accretion; black; chaos; electromagnetic; equatorial; field; hole; karas; kerr; motion; particles; rotating; structure; system; test cache: ap-2173.pdf plain text: ap-2173.txt item: #618 of 1656 id: ap-2179 author: Zajacek, Michal; Karas, Vladimir; Kunneriath, Devaky title: GALACTIC CENTER MINISPIRAL: INTERACTION MODES OF NEUTRON STARS date: 2015 words: 8962 flesch: 62 summary: Keywords: galaxy center; individual objects; Sagittarius A; neutron stars. The same order is ex- pected for neutron stars based on multiwavelength statistical studies [11]. keywords: center; distribution; field; figure; galactic; interaction; interaction modes; minispiral; modes; neutron; neutron stars; pressure; pulsar; radius; stars cache: ap-2179.pdf plain text: ap-2179.txt item: #619 of 1656 id: ap-218 author: Vorel, M.; Leidich, E. title: Accuracy of Determining Stress Intensity Factors in Some Numerical Programs date: 2001 words: 3720 flesch: 55 summary: False values at crack edges are generally caused by some unsuitable treatment of the singularities which always exist at the ends of a crack front To take advantage of the programs’ ex- tensive functions and high reliability a number of user subroutines for solving stress intensity factors need to be programmed. keywords: crack; factors; franc3d; intensity; marc; mesh; programs; stress; � � cache: ap-218.pdf plain text: ap-218.txt item: #620 of 1656 id: ap-2180 author: Sovják, Radoslav; Rašínová, Jana; Máca, Petr title: EFFECTIVE FRACTURE ENERGY OF ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE UNDER INCREASED STRAIN RATES date: 2014 words: 2875 flesch: 63 summary: This is because when there is a higher fibre volume fraction the maximum pull- out capacity on each individual fibre is reduced; its sensitivity to higher strain rates is therefore also reduced. It is therefore highly desirable to extend the scope of our study presented here, and to verify the effective fracture energy of fibre-reinforced cementitious composites under higher strain rates above 10−2 s−1. keywords: energy; fibre; figure; fracture; rates; strain; uhpfrc cache: ap-2180.pdf plain text: ap-2180.txt item: #621 of 1656 id: ap-2195 author: Pikna, Peter; Píč, Vlastimil; Benda, Vítězslav; Fejfar, Antonín title: ANNEALING OF POLYCRYSTALLINE THIN FILM SILICON SOLAR CELLS IN WATER VAPOUR AT SUB-ATMOSPHERIC PRESSURES date: 2014 words: 4227 flesch: 56 summary: Keywords: passivation, water vapour, thin film solar cell, polycrystalline silicon (poly-Si), multicrys- talline silicon (m-Si), Suns-VOC . Sufficient photovoltaic efficiency of thin film solar cells in connection with a sufficiently low production price is the key condition for compet- itiveness on the market dominated by wafer-based solar cells. keywords: cell; detector; light; lock; method; solar; suns; temperature; voc; voltage cache: ap-2195.pdf plain text: ap-2195.txt item: #622 of 1656 id: ap-2197 author: Cutroneo, Mariapompea; Torrisi, Lorenzo; Mackova, Anna; Velyhan, Andriy title: POLYMERS CONTAINING Cu NANOPARTICLES IRRADIATED BY LASER TO ENHANCE THE ION ACCELERATION date: 2015 words: 2562 flesch: 57 summary: The composition and the geometry of the target absorb high laser energy and generate hot plasmas and high charge separation, inducing high ion acceleration, as will be reported. Such a thin film produces high laser absorption due to the presence of the metal which absorbs the IR laser radiation and also due to the Cu nanoparticles in which surface plasmon resonant absorption effects are induced by the laser electromagnetic wave keywords: energy; laser; mylar; plasma; target; thickness cache: ap-2197.pdf plain text: ap-2197.txt item: #623 of 1656 id: ap-2199 author: Torrisi, Lorenzo; Cutroneo, Mariapompea; Ullschmied, Jiri title: HYDROGENATED TARGETS FOR HIGH ENERGY PROTON GENERATION FROM LASER IRRADIATING IN TNSA REGIME date: 2015 words: 2594 flesch: 56 summary: MeV pro- ton beams can be applied in various areas of interest, from biomedicine (hadron therapy) to nuclear physics (nuclear fusion processes), from microelectronics (semi- conductor doping) to laser ion source (ion injection in accelerators) and to other fields Higher ion acceleration is therefore expected, as reported in Fig. keywords: acceleration; energy; ions; laser; plasma; proton cache: ap-2199.pdf plain text: ap-2199.txt item: #624 of 1656 id: ap-220 author: Elsayed, Ashraf El-Shahat; Grünwald, A.; Dvořák, D. title: Pollutant Removal from Highway Runoff Using Retention/Detention Units date: 2001 words: 4004 flesch: 51 summary: Numerous factors may affect the presence of these constitu- ents and the quality of highway runoff, including: traffic volume, precipitation characteristics, roadway surface type, the nature of the pollutants themselves, surrounding land use, and seasonal considerations. Highway runoff contains to- tal suspended solids, hydrocarbons, oil and greases, chloride, and other contaminants that are transported in solution and particulate forms to adjacent floodplains, roadside swales, and retention/detention ponds. keywords: constituents; detention; grit; highway; oil; runoff; solids; units cache: ap-220.pdf plain text: ap-220.txt item: #625 of 1656 id: ap-2200 author: Kurbanismailov, Vali Suliymanovich; Omarov, Omar Alievich; Ragimkhanov, Gadjimirza Balaglanovich; Aliverdiev, Abutrab Alexandrovich title: ABOUT THE UNIFORMITY AND THE STABILITY OF A VOLUME DISCHARGE IN HELIUM IN NEAR-ATMOSPHERIC PRESSURE date: 2015 words: 2515 flesch: 61 summary: Keywords: discharge formation; volume discharge; streamer; discharge plasma. Introduction One of the applications of volume discharges in inert gases is gas laser pumping. keywords: current; discharge; gas; phys; plasma; pressure; voltage; volume cache: ap-2200.pdf plain text: ap-2200.txt item: #626 of 1656 id: ap-2201 author: Caballero-Garcia, Maria D.; Jelinek, M.; Castro-Tirado, A.; Hudec, R.; Cunniffe, R.; Rabaza, O.; Sabau-Graziati, L. title: INITIAL FOLLOW-UP OF OPTICAL TRANSIENTS WITH COLORES USING THE BOOTES NETWORK date: 2015 words: 2926 flesch: 65 summary: In spite of constituting the best tool for deep studies of individual targets, they are not properly suited for the discovery of optical transient sources. Observations of GRB optical counterparts. keywords: bootes-2; colores; grb; optical; telescopes cache: ap-2201.pdf plain text: ap-2201.txt item: #627 of 1656 id: ap-2203 author: Domalapally, Phani Kumar; Entler, Slavomir title: COMPARISON OF COOLING SCHEMES FOR HIGH HEAT FLUX COMPONENTS COOLING IN FUSION REACTORS date: 2015 words: 6080 flesch: 66 summary: Some components of fusion reactors receive high heat fluxes either during startup and shutdown, or while the machine is in operation. Liquid metals are proposed as coolants because of their high thermal conductivity and high heat capacity, which enable them to accommodate high heat fluxes (HHF) with relatively low velocities. keywords: cooling; design; divertor; engineering; figure; flow; flux; fusion; heat; helium; tube cache: ap-2203.pdf plain text: ap-2203.txt item: #628 of 1656 id: ap-2210 author: Beskin, Gregory; Oganesyan, Gor; Greco, Giuseppe; Karpov, Sergey title: STATISTICAL PROPERTIES OF GRB AFTERGLOW PARAMETERS AS EVIDENCE OF COSMOLOGICAL EVOLUTION OF THEIR HOST GALAXIES date: 2014 words: 5243 flesch: 71 summary: Prompt optical events (P) are pre- sumably produced as a result of collisions of internal shells in GRB sources, while the afterglows are formed as the shock wave enters the interstellar medium. Pair correlations for different classes of GRB optical counterparts with correlation coefficients greater than 0.5 and significances better than 1%. keywords: a(u; afterglow; burst; et al; gamma; grb; ray; redshift cache: ap-2210.pdf plain text: ap-2210.txt item: #629 of 1656 id: ap-2212 author: Beuchert, Tobias; Wilms, Jörn; Kadler, Matthias; Longinotti, Anna Lia; Guainazzi, Matteo; Miniutti, Giovanni; de la Calle, Ignacio title: X-RAY VARIABILITY STUDY OF POLAR SCATTERED SEYFERT1 GALAXIES date: 2014 words: 2924 flesch: 65 summary: As X-ray sources of AGN are assumed to have a diameter of 10rS, the cloud diameter must be > 10rS in order to cover the central source [10]. The shortest measured timescale of 5 days is due to warm absorber variability. keywords: absorber; galaxies; line; mrk; seyfert; variability cache: ap-2212.pdf plain text: ap-2212.txt item: #630 of 1656 id: ap-2214 author: Karpov, Sergey; Beskin, Grigory; Plokhotnichenko, Vladimir title: SEARCH FOR ISOLATED BLACK HOLES: PAST, PRESENT, FUTURE date: 2014 words: 2892 flesch: 57 summary: It uses photometric observations of candidate objects with high time resolution, special hardware and data analysis methods [14, 15], and is based on the fact that fast variability is the critical property of isolated black hole emission. A large fraction of black hole emission is generated inside the 2rg sphere, and so carries information about the physical conditions of space-time very close to the event horizon. keywords: accretion; emission; flow; hole; horizon; mass; objects; time cache: ap-2214.pdf plain text: ap-2214.txt item: #631 of 1656 id: ap-2216 author: Koeny, Marcus; Blanik, Nikolai; Yu, Xinchi; Czaplik, Michael; Walter, Marian; Rossaint, Rolf; Blazek, Vladimir; Leonhardt, Steffen title: USING PHOTOPLETHYSMOGRAPHY IMAGING FOR OBJECTIVE CONTACTLESS PAIN ASSESSMENT date: 2014 words: 4211 flesch: 59 summary: Data recordings in the University Hospital in Aachen The ECG and PPG signals used to develop and evalu- ate the described algorithms were recorded over a time period of two months anonymously at the University Hospital of Aachen, Germany, after approval by the local ethics committee. HRV signals of ECG, PPG and PPGI. keywords: ani; beat; ecg; figure; heart; pain; ppg; ppgi; rate; signal cache: ap-2216.pdf plain text: ap-2216.txt item: #632 of 1656 id: ap-2218 author: Schillaci, Francesco; Cirrone, Giuseppe A. P.; Korn, George; Maggiore, Mario; Margarone, Daniele; Calabretta, Luciano; Cavallaro, Salvatore; Cuttone, Giacomo; Gammino, Santo; Krasa, Josef; Prokupek, Jan; Velyhan, Andriy; Renis, Marcella; Romano, Francesco; Tomasello, Barbara; Torrisi, Lorenzo; Cutroneo, Mariapompea; Tramontana, Antonella title: ELIMED: MEDICAL APPLICATION AT ELI-BEAMLINES. STATUS OF THE COLLABORATION AND FIRST RESULTS date: 2014 words: 3615 flesch: 61 summary: Proton beams with energy up to 60 MeV will be produced. Proton beams with energy up to 100 MeV will be produced. keywords: beam; beamlines; eli; elimed; energy; laser; mev; proton; system cache: ap-2218.pdf plain text: ap-2218.txt item: #633 of 1656 id: ap-222 author: Grünwald, A.; Šťastný, B.; Slavíčková, K.; Slavíček, M. title: Effect of the Distribution System on Drinking Water Quality date: 2001 words: 2579 flesch: 55 summary: The overall rate of chlorine decay can be expressed as follows: � ��c b f H w� � � �k k R c c where � is the rate of chlorine decay in mg�l�1 �d��, kb first order decay coefficient in d��, c chlorine concentration in bulk flow in mg�l�1, kf mass transfer coefficient in m�d�1, RH hydraulic radius in m, cw chlorine concentration at the pipe wall in mg�l�1. 3 Modeling of chlorine decay The first method for the decrease in chlorine in the bulk flow is based on first order kinetics [3]: c c k t t e� � � 0 1 where ct is the chlorine concentration in time t, in mg�l��, c0 chlorine concentration in time t = 0, in mg�l��, t time in days, k1 first order decay coefficient in d�1. keywords: chlorine; solids; time; water; � � cache: ap-222.pdf plain text: ap-222.txt item: #634 of 1656 id: ap-2220 author: Sláma, Jan; Kríha, Vítezslav title: INHIBITION OF CANDIDA ALBICANS GROWTH ON SURFACES TREATED BY DIELECTRIC BARRIER DISCHARGE WITH VARIOUS BARRIERS date: 2014 words: 2616 flesch: 57 summary: Keywords: low temperature plasma, dielectric barrier discharge, inhibition, Candida albicans, treat- ment, biological surface. Cultivation, logging and storing After plasma surface treatment, the agar wafers were stacked on an empty Petri dish (Fig. 4) which was placed into the thermostatic chamber. keywords: agar; albicans; barrier; discharge; inhibition; plasma cache: ap-2220.pdf plain text: ap-2220.txt item: #635 of 1656 id: ap-2221 author: Socha, Vladimir; Kutilek, Patrik; Cakrt, Ondrej; Cerny, Rudolf title: COMPARATIVE MEASUREMENTS OF HEAD ANGULAR MOVEMENTS USING A CAMERA SYSTEM AND A GYROSCOPE SYSTEM date: 2014 words: 3901 flesch: 64 summary: These include: mean displacement velocity, total length of the CoP trajectory, movement area, planar deviation, etc. Keywords: head orientation, camera system, orientation tracker, pitch versus roll plots. keywords: mean; pitch; roll; subjects; system; traces; velocity cache: ap-2221.pdf plain text: ap-2221.txt item: #636 of 1656 id: ap-2222 author: Sochora, Vjaceslav; Karas, Vladimír; Svoboda, Jirí; Dovciak, Michal title: BEYOND THE STANDARD MODEL OF THE DISC–LINE SPECTRAL PROFILES FROM BLACK HOLE ACCRETION DISCS date: 2014 words: 2280 flesch: 67 summary: Model spectrum considering background 3.1. Here we explore the fact that an accretion disc emission can be mathematically imagined as a superposition of radiating accretion rings that extend from the inner edge to the outer rim of the disc, with some radially varying emissivity. keywords: accretion; background; black; hole; model; spectrum cache: ap-2222.pdf plain text: ap-2222.txt item: #637 of 1656 id: ap-2224 author: Vojta, Vladimír title: FRACTIONAL CALCULUS AND LAMBERT FUNCTION I. LIOUVILLE–WEYL FRACTIONAL INTEGRAL date: 2014 words: 8221 flesch: 77 summary: du, using the linear substitution x = y + u/W0(1) and the relation ln(W0(1))/W0(1) Its diagonal restriction ν = y gives Γ(y, y) = e−y Γ(1− y) keywords: function; integral; laplace; transform; w0(eu; ∫ ∞ cache: ap-2224.pdf plain text: ap-2224.txt item: #638 of 1656 id: ap-2227 author: Tsyrenov, Dmitriy; Semenov, Aleksandr; Smirnyagina, Natalia title: MODERNIZATION FEATURES OF A VACUUM INSTALLATION BASED ON LOW-PRESSURE ARC DISCHARGE FOR COMPOSITE TIN-CU LAYERS FORMATION date: 2015 words: 1664 flesch: 57 summary: A hybrid technology for forming composite TiN-Cu layers under the combined influence of a magnetron and low pressure arc discharges has been designed. Conclusion Preliminary results have been obtained for a hybrid technology for forming composite TiN-Cu layers with a simultaneous combination of a vacuum arc evaporator and a planar magnetron. keywords: composite; figure; layers; magnetron; tin cache: ap-2227.pdf plain text: ap-2227.txt item: #639 of 1656 id: ap-2228 author: Davydova, Marina; Smid, Jiri; Hubicka, Zdenek; Kromka, Alexander title: DEPOSITION CARBON NANOSTRUCTURES BY SURFATRON GENERATED DISCHARGE date: 2014 words: 2198 flesch: 58 summary: Keywords: surfatron, carbon nanostructures, microwave plasma, PECVD. However, deposition of carbon nanostructures by SWD is not broadly used. keywords: carbon; deposition; gas; nanostructures; plasma; surface cache: ap-2228.pdf plain text: ap-2228.txt item: #640 of 1656 id: ap-2230 author: Lisy, Viliam title: ALTERNATIVE SELECTION FUNCTIONS FOR INFORMATION SET MONTE CARLO TREE SEARCH date: 2014 words: 6805 flesch: 66 summary: Game theory provides means to deal with all these complications, but previous attempts to adapt MCTS to imperfect information games generally did not eval- uate the properties of the strategies from the perspec- tive of game theory. Keywords: Monte Carlo Tree Search, imperfect information game, selection function, Regret matching. keywords: action; algorithm; exp3; game; information; player; selection; set; strategy; uct; ● ● cache: ap-2230.pdf plain text: ap-2230.txt item: #641 of 1656 id: ap-224 author: Ismail, Ashraf Fouad Hafez title: Class Representation of Shapes Using Qualitative-codes date: 2001 words: 11745 flesch: 59 summary: The Q-code (�) � � � �� �� �� � � � ��i iA, L, K, C , , ,0 The Q-code “�” forms the base symbol in the encod- ing formalism. The second A-code (Axx-code) set QA2: � �Q A A A A A A A AA nil2 0 0 0� � � � � � � � � � �, , , , , , , . keywords: code; k0 �; landmark; nodes; qualitative; set; shape; value; x �; � c; � fig; � k; � l; � q; � y; � � cache: ap-224.pdf plain text: ap-224.txt item: #642 of 1656 id: ap-2241 author: Duras, Julia; Kalentev, Oleksander; Schneider, Ralf; Matyash, Konstantin; Lüskow, Karl Felix; Geiser, Jürgen title: ELECTROSTATIC ION THRUSTERS - TOWARDS PREDICTIVE MODELING date: 2015 words: 4217 flesch: 63 summary: Modeling strategy The most complete model resolving all time scales of ion thrusters would be a direct coupling of a kinetic plasma model with a molecular dynamics model for the walls. This is important, since ion thrusters are qualified within various test- setups. keywords: distribution; flux; ion; model; particles; source; thruster; vessel; walls cache: ap-2241.pdf plain text: ap-2241.txt item: #643 of 1656 id: ap-2244 author: Lisuch, Julius; Dorcak, Dusan; Spisak, Jan title: EFFECTIVE USE OF ROTARY FURNACE SHELL HEAT date: 2014 words: 3388 flesch: 64 summary: By the intensity of the con- trolled shell cooling we can affect the flow of useful heat in the RP segment and thus control the intensity Detained heat [MJ] [%] Q material ln 508 0.54 Q medium ln 518 0.55 Q brought from furnace shell through primary air 5000 5.34 Q burner 87600 93.56 Sum 93626 100 Escaped heat [MJ] [%] QH2O evaporated 654 0.71 Q decomposition MgCO3 31304 33.82 Q decomposition CaCO3 2498 2.70 Q decomposition FeCO3 453 0.49 Q medium Out 34934 37.74 Q mematerial Out 12890 13.93 Q furnace shell losses 4825 5.21 Q brought from furnace shell through primary air 5000 5.40 Sum 92558 100 Table 5. Keywords: rotary furnace, furnace, magnesite, control shell cooling, shell. keywords: figure; furnace; heat; losses; rotary; shell; surface; temperature cache: ap-2244.pdf plain text: ap-2244.txt item: #644 of 1656 id: ap-2246 author: Čech, Jan; Zemánek, Miroslav; Sťahel, Pavel; Dvořáková, Hana; Černák, Mirko title: INFLUENCE OF SUBSTRATE THICKNESS ON DIFFUSE COPLANAR SURFACE BARRIER DISCHARGE PROPERTIES date: 2014 words: 4141 flesch: 58 summary: Ozone synthesis from oxygen in dielectric barrier discharges. This paper presents an investigation of the influence of dielectric barrier thickness on the parameters of the Diffuse Coplanar Surface Barrier Discharge. keywords: barrier; dcsbd; dielectric; discharge; field; plasma; power; surface; thickness; voltage cache: ap-2246.pdf plain text: ap-2246.txt item: #645 of 1656 id: ap-2252 author: Kelar, Jakub; Čech, Jan; Slavíček, Pavel title: ENERGY EFFICIENCY OF PLANAR DISCHARGE FOR INDUSTRIAL APPLICATIONS date: 2015 words: 2269 flesch: 61 summary: Typical current and voltage waveforms of DCSBD operated at input power of approx. It can be seen that when high added noise is present the absolute error of the power input estimation can be more than 0 to 12W at 250W of input power (i.e., 5% of the value). keywords: current; dcsbd; discharge; estimation; phase; plasma; power; voltage cache: ap-2252.pdf plain text: ap-2252.txt item: #646 of 1656 id: ap-2257 author: Ondac, Peter; Horacek, Jan; Seidl, Jakub; Vondrácek, Petr; Müller, Hans Werner; Adámek, Jirí; Nielsen, Anders Henry title: COMPARISON BETWEEN 2D TURBULENCE MODEL ESEL AND EXPERIMENTAL DATA FROM AUG AND COMPASS TOKAMAKS date: 2015 words: 5906 flesch: 59 summary: The differences in the simulations were in radial boundary conditions (Neumann or Dirichlet) for plasma density, plasma potential, radial electric field and electron tem- perature, value of the the neoclassical Pfirsch-Schlüter perpendicular collisional diffusion coefficient for parti- cles D′⊥n, value of parallel loss time for particles τ ′‖n or in the form of the bracket Ψ in the last term in the equation (9) (where the exponential form is shown). The gradient of the radial profile of plasma density in the ESEL simulations matching the ASDEX Upgrade plasma is too small compared with the experiment. keywords: asdex; data; density; electron; esel; model; plasma; temperature; term; tokamak; upgrade cache: ap-2257.pdf plain text: ap-2257.txt item: #647 of 1656 id: ap-226 author: Haghi, A. K. title: A Mathematical Model of theDrying Process date: 2001 words: 2552 flesch: 48 summary: (2) The boundary conditions for convective heat transfer and mass transfer at the leather surface are � �q h T T� �e e (3) and � �m h C C� �m e A . These parameters include the operation conditions of the dryer, such as the initial moisture content of the leather, heat and mass transfer coefficients, drying air moisture content, and dryer air temperature. keywords: content; drying; leather; moisture; temperature; � � cache: ap-226.pdf plain text: ap-226.txt item: #648 of 1656 id: ap-2263 author: Chatthong, Boonyarit; Onjun, Thawatchai title: STUDY OF L–H TRANSITION AND PEDESTAL WIDTH BASED ON TWO-FIELD BIFURCATION AND FIXED POINT CONCEPTS date: 2015 words: 5237 flesch: 66 summary: [ Dneo + Dano 1 + α(ν′ E)2 ]∂n ∂x = S(x, t), (2) where p is plasma pressure, n is plasma density, χneo and Dneo represent the neoclassical transport coeffi- cients, χano and Dano represent the anomalous trans- port coefficients, ν′ E is the flow shear suppression, α is a positive constant representing the strength of the suppression, and H and S are the thermal and particle sources, localized at the center and at the edge of the plasma, respectively. Evidently, the change in parti- cle source has a greater effect on plasma density than on plasma pressure. keywords: density; figure; particle; pedestal; plasma; pressure; transition; transport; value cache: ap-2263.pdf plain text: ap-2263.txt item: #649 of 1656 id: ap-2265 author: Bogachev, Nikolay Nikolaevich; Bogdankevich, Irina L.; Gusein-Zade, Namik G.; Sergeychev, Konstantin F. title: OPERATION MODES AND CHARACTERISTICS OF PLASMA DIPOLE ANTENNA date: 2015 words: 2981 flesch: 65 summary: Keywords: plasma antenna, surface electromagnetic wave, numerical simulation, operation modes, metal monopole, radiation pattern. Introduction In recent years much plasma antenna research has been done by theoretical, numerical and experimental methods [1–11]. keywords: antenna; metal; modes; plasma; radiation; surface; wave cache: ap-2265.pdf plain text: ap-2265.txt item: #650 of 1656 id: ap-2266 author: Casas, David; Barriga-Carrasco, Manuel D.; Andreev, Alexander A.; Schnürer, Matthias; Morales, Roberto title: PROTON STOPPING POWER OF DIFFERENT DENSITY PROFILE PLASMAS date: 2015 words: 3084 flesch: 63 summary: Free Electron Stopping Stopping power of free plasma electrons can be cal- culated using a RPA dielectric function (DF). Finally, electronic stopping of free plasma electrons will be calculated in the dielectric formalism as Spf (v) = 2Z2 πv2 ∫ ∞ 0 dk k ∫ kv 0 keywords: beam; density; energy; function; loss; plasma; power; proton; stopping cache: ap-2266.pdf plain text: ap-2266.txt item: #651 of 1656 id: ap-2269 author: Blaško, Marian; Tittel, Viktor; Náplava, Antonín; Ondruška, Michal title: INJECTION MOLDING AND STRUCTURAL ANALYSIS IN METAL TO PLASTIC CONVERSION OF BOLTED FLANGE JOINT BY CAE date: 2014 words: 1722 flesch: 59 summary: Mechanical properties of fiber reinforced parts are strongly in- fluenced by fiber orientation resulting from injection molding process. Injection molding analysis was performed on ac- tual flange model with corresponding feed system and injection molding parameters. keywords: analysis; fiber; injection; molding; stress cache: ap-2269.pdf plain text: ap-2269.txt item: #652 of 1656 id: ap-2270 author: Lahuta, Martin; Pátek, Zdeněk; Szöllös, András title: COMPUTATIONAL AERODYNAMIC OPTIMIZATION OF LOW-SPEED WING date: 2014 words: 4023 flesch: 54 summary: Typical geometric constraints that can be used are: wing area, wing span, wing aspect ratio, wing taper ratio, wing twist, wing dihedral, wing swept angle. It is necessary to create a database of the airfoils used on the wing in advance, because the aerodynamic characteristics of the airfoils used on the wing and their positions along the wingspan are used as inputs for wing optimization. keywords: aerodynamic; archive; design; evolution; new; optimization; population; vector; wing cache: ap-2270.pdf plain text: ap-2270.txt item: #653 of 1656 id: ap-2271 author: Castro, Giuseppe; Mascali, David; Romano, Francesco Paolo; Altana, Carmen; Caliri, Claudia; Celona, Luigi; Di Giugno, Rossella; Gambino, Nadia; Lanaia, Davide; Miracoli, Rosalba; Musumarra, Agatino; Neri, Lorenzo; Torrisi, Giuseppe; Gammino, Santo title: EXPERIMENTAL CHARACTERIZATION OF AN OVERDENSE PLASMA IN A COMPACT ION SOURCE date: 2015 words: 2833 flesch: 65 summary: This mechanism is commonly called Electron Cyclotron Resonance (ECR), and it enables ECR plasmas to be generated and sustained. References [1] R. Geller, Electron Cyclotron Resonance Ion source and ECR plasmas: Inst. keywords: cut; density; ebw; electron; field; frequency; ion; plasma; waves cache: ap-2271.pdf plain text: ap-2271.txt item: #654 of 1656 id: ap-2272 author: Vítku, Jaroslav; Nahodil, Pavel title: TOWARDS EVOLUTIONARY DESIGN OF COMPLEX SYSTEMS INSPIRED BY NATURE date: 2014 words: 7849 flesch: 59 summary: Then, examples of agent architectures represented as hybrid networks are presented. Sim- ilarly to the neuro-evolutionary design of ANNs [14], the topology of agent architecture is optimized by modifying the connection weights between nodes. keywords: agent; architecture; design; learning; module; motivation; prosperity; reward; state; value cache: ap-2272.pdf plain text: ap-2272.txt item: #655 of 1656 id: ap-2274 author: Hájková, Pavlína; Tichý, David; Čmelík, Jiří; Antoš, Petr title: IMMOBILISATION OF HUMIC SUBSTANCES USING PLASMA MODIFICATION date: 2015 words: 3082 flesch: 59 summary: The column apparatus was filled with PP fabrics. The total area of PP fabrics was 62.8 cm2, and it was dripped by an aqueous solution of cadmium salts with a flow rate of 0.5ml/min. keywords: cd2; dbd; fabric; hss; humic; plasma; solution; substances cache: ap-2274.pdf plain text: ap-2274.txt item: #656 of 1656 id: ap-2275 author: Šulc, Radek; Pešava, Vít; Ditl, Pavel title: LOCAL VELOCITY PROFILES MEASURED BY PIV IN AN VESSEL AGITATED BY RUSHTON TURBINE date: 2014 words: 4609 flesch: 58 summary: Dimensionless radial fluctuation velocity profile – effect of impeller speed; z∗ = 0.1474. Keywords: mixing, Rushton turbine, Particle Image Velocimetry, flow, velocity profile, mean velocity, fluctuation velocity. keywords: dimensionless; flow; hypothesis; impeller; mean; profile; velocity; vessel cache: ap-2275.pdf plain text: ap-2275.txt item: #657 of 1656 id: ap-2277 author: Maturkanič, Dušan title: EFFECT OF THE FLOW FIELD DEFORMATION IN THE WIND TUNNEL ON THE AERODYNAMIC COEFFICIENTS date: 2015 words: 6610 flesch: 62 summary: Asymmetry of the speed profile The specific speed V SYM indicates the size of the cor- responding difference between the local speeds and defined flow field speed in the wind tunnel. However, the same value of this specific speed could represent various kinds of flow field non-uniformities. keywords: flow field; flow speed; model; rotation; speed; speed component; speed profile; vortex flow; wind tunnel cache: ap-2277.pdf plain text: ap-2277.txt item: #658 of 1656 id: ap-228 author: Safan, M.; Kohoutková, A. title: Influence of Different Drying Conditions on High Strength Concrete Compressive Strength date: 2001 words: 3592 flesch: 54 summary: In the current research, crushed dolomite was used in two high strength concrete mixes with 0.0 and 10 percent silica fume addition to evaluate the influence of five different drying conditions on high strength concrete compressive strength evaluated at 3, 7, 28 days. [1]. High strength concrete offers greater compressive strength per unit cost, weight, and volume associated with improved mechanical properties such as modulus of elasticity and ten- sile strength. keywords: case; concrete; conditions; curing; days; fume; silica; strength; water cache: ap-228.pdf plain text: ap-228.txt item: #659 of 1656 id: ap-2284 author: Mikula, Jan; Palička, Pavol; Kerekanic, Jan title: SIMULATION ANALYSIS OF PREHEATER CHARGE TO THE ROTARY FURNACE date: 2015 words: 2814 flesch: 54 summary: Acceleration of simulation models for raw materials thermal treatment. The main advantages of using this type of preheater of rotary furnace are smaller dimensions for a large exchange surface and low pressure losses. keywords: furnace; magnesite; material; model; preheater; rotary; temperature cache: ap-2284.pdf plain text: ap-2284.txt item: #660 of 1656 id: ap-2289 author: Stuchlík, Zdenek; Urbanec, Martin; Kotrlová, Andrea; Török, Gabriel; Goluchová, Katerina title: RESONANT SWITCH MODEL OF HF QPOS AND EQUATIONS OF STATE OF NEUTRON STARS AND QUARK STARS date: 2014 words: 3220 flesch: 69 summary: Neutron star models are constructed under the Hartle–Thorne theory of slowly rotating neutron stars calculated using the observationally given rotational frequency frot = 580 Hz (or alternatively frot = 290 Hz) of the neutron star at 4U 1636– 53. Acta Polytechnica doi:10.14311/AP.2014.54.0363 Acta Polytechnica 54(5):363–366, 2014 © Czech Technical University in Prague, 2014 available online at http://ojs.cvut.cz/ojs/index.php/ap RESONANT SWITCH MODEL OF HF QPOS AND EQUATIONS OF STATE OF NEUTRON STARS AND QUARK STARS Zdeněk Stuchlík∗, Martin Urbanec, Andrea Kotrlová, Gabriel Török, Kateřina Goluchová Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech Republic ∗ corresponding author: zdenek.stuchlik@fpf.slu.cz Abstract. keywords: frequency; model; neutron; resonant; star cache: ap-2289.pdf plain text: ap-2289.txt item: #661 of 1656 id: ap-2290 author: Šmilauer, Vít; Babchenko, Oleg; Potocký, Štepán; Kromka, Alexander title: HYDRATION OF PLASMA-TREATED ALUMOSILICATE BINDERS date: 2014 words: 2596 flesch: 63 summary: Plasma surface treatment is a well-established method for creating hydrophilic surfaces, which play an important role in hydraulic cementitious binders. However, the CNTs on the surface of the cement grains hinder the acceleration period of cement hydration, as is evident if we compare the original OPCH with its CHM counterpart in Figure 4. keywords: ash; cement; cnts; figure; hydration; plasma; surface; treatment cache: ap-2290.pdf plain text: ap-2290.txt item: #662 of 1656 id: ap-2291 author: Lázár, Marián; Čarnogurská, Mária; Lengyelová, Marta; Korba, Ján title: HIGH-TEMPERATURE GASIFICATION OF RDF WASTE AND MELTING OF FLY ASH OBTAINED FROM THE INCINERATION OF MUNICIPAL WASTE date: 2015 words: 3647 flesch: 55 summary: Acta Polytechnica doi:10.14311/AP.2015.55.0001 Acta Polytechnica 55(1):1–6, 2015 © Czech Technical University in Prague, 2015 available online at http://ojs.cvut.cz/ojs/index.php/ap HIGH-TEMPERATURE GASIFICATION OF RDF WASTES AND MELTING OF FLY ASH OBTAINED FROM THE INCINERATION OF MUNICIPAL WASTES Marián Lázár, Mária Čarnogurská∗, Marta Lengyelová, Ján Korba Faculty of Mechanical Engineering, Technical University of Košice, Department of Power Engineering, Vysokoškolská 4, 042 00 3. Raw materials used for gasification and the properties of the gas For the purposes of the experimental tests on plasma processing of RDF wastes, we used a sample that was obtained by separating the combustible components of municipal wastes (Fig. 2). keywords: ash; energy; fly; gasification; plasma; process; rdf; wastes cache: ap-2291.pdf plain text: ap-2291.txt item: #663 of 1656 id: ap-2292 author: Trudonoshyn, Oleksandr; Puchnin, Maxim; Mykhalenkov, Kostiantyn title: FEATURES OF STRUCTURE FORMATION AND CHANGES IN THE MECHANICAL PROPERTIES OF CAST Al-Mg-Si-Mn ALLOY WITH THE ADDITION OF (Ti+Zr) date: 2015 words: 4736 flesch: 57 summary: The popularity and the successful implementation into foundry practice of Al-Mg-Si-Mn alloys is based on its advantages in comparison with Al-Si-Mg alloys, such as: • these alloys have one of the highest eutectic melting points (597 °C) among all commercial Al casting alloys; eutectic alloys are the most suitable alloys for casting. As has been pointed out in [1, 2], there is a call for new alloys suitable for these processes; • improved degassing and refining techniques for alu- minium alloys; • developing new alloys. keywords: alloys; casting; eutectic; fig; mg2si; properties; treatment cache: ap-2292.pdf plain text: ap-2292.txt item: #664 of 1656 id: ap-2293 author: Brestovič, Tomáš; Čarnogurská, Mária; Příhoda, Miroslav; Kubík, Michal title: SIMULATION OF HEAT TRANSPORT AT THE COOLING OF THE SUGAR SOLUTION IN A RECUPERATION EXCHANGER date: 2015 words: 2986 flesch: 55 summary: (11) where αstr is the average value of the transfer coeffi- cient at the surrounding temperature of 8 °C and in the interval of the tank surface temperatures of 0 to 22 °C (Wm−2 K−1); S is the external heat exchanging surface of the tank (m2); tok is the environment tem- perature (°C); t – stum temperature in time τ (°C); n – number of cooling panels (1); Pch – device cooling performance (W); m – cooled material weight (kg); 143 T. Brestovič, M. Čarnogurská, M. Přihoda, M. Kubík Acta Polytechnica Figure 7. Course of the stum temperature, depending on time. Conclusion The methodology for determining cooling parameters using a combination of a numeric and an analytical calculation enables us to describe the dynamic be- haviour of the cooling system precisely. keywords: cooling; heat; performance; stum; temperature cache: ap-2293.pdf plain text: ap-2293.txt item: #665 of 1656 id: ap-2294 author: Prach, Olena; Horník, Jakub; Mykhalenkov, Kostiantyn title: EFFECT OF THE ADDITION OF LI ON THE STRUCTURE AND MECHANICAL PROPERTIES OF HYPOEUTECTIC Al-Mg2Si ALLOYS date: 2015 words: 4479 flesch: 59 summary: Alloys with various contents of Li were studied by means of differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and energy dispersive X-Ray microanalysis (EDX). [6], it is clear that the addition of Li to Al-Cu or Al-Mg alloys can substantially enhance the mechanical properties, while at the same time decreasing the density. keywords: addition; alloys; effect; eutectic; mg2si; properties; temperature cache: ap-2294.pdf plain text: ap-2294.txt item: #666 of 1656 id: ap-2297 author: Stodůlka, Jiří; Šafařík, Pavel title: ANALYSIS OF TRANSONIC FLOW PAST CUSPED AIRFOILS date: 2015 words: 3218 flesch: 64 summary: Reduced parameter analysis of supersonic flow past trailing edge For a deeper investigation of this problem, the model of nonsymmetrical supersonic flow past a trailing edge [7] is proposed (Fig. The application of equations (17) and (18) to Case I of the cusped airfoil proved a regular interaction of supersonic flows on the sharp trailing edge. keywords: angle; edge; flow; shock; trailing cache: ap-2297.pdf plain text: ap-2297.txt item: #667 of 1656 id: ap-230 author: Haghi, A. K. title: Investigation into Airborne Dust ina Wool Textile Mill date: 2001 words: 2720 flesch: 56 summary: Microscope magnification is a critical parameter which enables the detection of dust particles and distinguishes them from filter surface features. The aim of this work is to deepen the understanding of the factors relevant to this problem by conducting a survey of the nature of airborne wool dust in an industrial environment. keywords: dust; filter; particles; sampling; size; wool cache: ap-230.pdf plain text: ap-230.txt item: #668 of 1656 id: ap-2307 author: Mego, Michal; Kocifaj, Miroslav; Kundracik, František title: A SYSTEM AND A DEVICE FOR ISOLATING CIRCULATING TUMOR CELLS FROM THE PERIPHERAL BLOOD IN VIVO date: 2015 words: 2978 flesch: 54 summary: Magnetic nanoparticles The system with magnetic nanoparticles covered by monoclonal antibodies against a common epithelial antigen (EpCAM) is used to isolate circulating tumor cells from the peripheral blood. The proposed system consists of magnetic nanoparticles covered by monoclonal antibodies against a common epithelial antigen, large supermagnets, which are used to control the position of the nanoparticles within the human body, and a special wire made of a magnetic core wrapped in a non-magnetic shell. keywords: blood; cells; ctcs; magnetic; nanoparticles; system; tumor; wire cache: ap-2307.pdf plain text: ap-2307.txt item: #669 of 1656 id: ap-232 author: Ismail, Ashraf Fouad Hafez title: Evolved Representation and Computational Creativity date: 2001 words: 8983 flesch: 55 summary: Keywords: computational creativity, evolved representation, design processes, evolutionary algorithms, search space. A simple hill climbing inside the focus-area, on the other hand, would be entirely convergent, the value for ‘explora- 44 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 41 No. 3/2001 Exploration (E) Transformation (T) creative zone non-creative zone transition zone mundane (m) mundane (m) novel (n) novel (n) original (o) original (o) Fig. 8: Framework to classify design processes in terms of exploration and transformation (from [14]) tion’ would therefore be ‘mundane’. keywords: design; example; focus; genes; genotype; process; representation; search; search space; space cache: ap-232.pdf plain text: ap-232.txt item: #670 of 1656 id: ap-2321 author: Šafarík, Pavel; Nový, Adam; Jícha, David; Hajšman, Miroslav title: ON THE SPEED OF SOUND IN STEAM date: 2015 words: 3035 flesch: 67 summary: The results for wet steam are very close (lower than 2% difference) to the values for the speed of sound in wet steam, derived according to (1), see Fig. 3, where a detail of the h–s (enthalpy– entropy) diagram for water and steam is depicted. From the thermodynamic point of view, wet steam in the equilibrium state is therefore considered to be a continuum, which contains both phases of water (sat- urated water liquid and saturated steam) according to the dryness value. keywords: iapws; sound; speed; steam; wet cache: ap-2321.pdf plain text: ap-2321.txt item: #671 of 1656 id: ap-2326 author: Durcansky, Peter title: COMPARISON OF MATHEMATICAL MODELS FOR HEAT EXCHANGERS OF UNCONVENTIONAL CHP UNITS date: 2015 words: 3454 flesch: 62 summary: Keywords: heat exchanger; CFD simulation; hot air engine. The most fre- quently investigated feature of heat exchangers is the heat exchange surface, from which all the other pa- rameters of the exchanger are derived. keywords: air; engine; exchanger; flow; heat; heat exchanger; model; temperature; transfer cache: ap-2326.pdf plain text: ap-2326.txt item: #672 of 1656 id: ap-2328 author: Sovják, Radoslav title: AN EXPERIMENTAL INVESTIGATION INTO MOISTURE-INDUCED EXPANSION OF PLASTERS date: 2015 words: 2325 flesch: 58 summary: The coefficient of moisture expansion for individual plasters is presented in Fig. An approximation and smoothing of the mea- sured moisture-induced strains for individual plasters (Fig. 7) was described, as follows, as a function of moisture content: ε(w) = a w + w0 − a w0 , (1) where ε is the moisture-induced strain, w is the mois- ture content by volume and a and w0 are fitting con- stants. keywords: expansion; laser; moisture; plaster; samples; study; year cache: ap-2328.pdf plain text: ap-2328.txt item: #673 of 1656 id: ap-2339 author: Dlask, Petr title: SIMULATION MODEL BASED ON REGIONAL DEVELOPMENT AND VIRTUAL CHANGES date: 2015 words: 7294 flesch: 54 summary: According to Schumpeter [40], innovation is in essence an instigator of economic change. Interaction matrix A of regional development model, Segment I. - Capital, Segment II. - Housing, Jobs, Segment III. – Population and vector Xt=0 of starting conditions. keywords: changes; data; development; economic; example; figure; knowledge; management; matrix; model; new; simulation; table; time cache: ap-2339.pdf plain text: ap-2339.txt item: #674 of 1656 id: ap-234 author: Bokr, J.; Jáneš, V. title: A Logic Object and its State date: 2001 words: 5926 flesch: 60 summary: Since i) � � � �� �� � � � � �� �� �proj K s x K s proj K s e K s3 3 r� �� � � � � � �, , , , � �1 1 � � � �� � � �� �� �� proj K s x K s K s3 r� � � � �, , , 1 , spec. S X S : s x s�� � � � � � �� 1 1, � , for � 0 ii) � � � � � � � ��� � � � � � � � �S X Z S : s x z s� � 1 1, , � for � 1. keywords: j �; q �; s �; u �; y �; z �; � k; � r; � x; � � cache: ap-234.pdf plain text: ap-234.txt item: #675 of 1656 id: ap-236 author: Elsayed, Ashraf El-Shahat; Grünwald, A.; Synáčková, M.; Slavíček, M. title: Modelling of Highway Runoff Quantity and Quality date: 2001 words: 4516 flesch: 55 summary: Due to the shortage of measured data and the necessity to study some important concepts such as runoff peak flow, pol- lutant accumulation and first flush phenomena, simulated data were used for studying these concepts. Keywords: Stormwater Management Model, highway runoff, quantity, quality, first flush. keywords: data; flow; highway; model; quality; rainfall; runoff; stormwater; swmm cache: ap-236.pdf plain text: ap-236.txt item: #676 of 1656 id: ap-238 author: Kaiser, J.; Košťál, E. title: Colorimetry and TV Colour Splitting Systems date: 2001 words: 3499 flesch: 53 summary: The ideal spectral reflectances of the partial filters of the XYZ prism are � � � �Ay � �� �y (4) � � � � � �� �Bx � � �� � � �x y1 (5) � � � � � � � �� �Cz � � � �� � � � � �z y x1 . � � � �� �y � �Ay (1) � � � � � �� �� � �x � � �Bx Ay1 (2) � � � � � �� � � �� �� � � �z � � � �Cz Ay Bx1 1 (3) keywords: b �; functions �; system; z �; � g; � r; � x; � y; � � cache: ap-238.pdf plain text: ap-238.txt item: #677 of 1656 id: ap-240 author: Safan, M.; Kohoutková, A. title: Experiments with Externally Prestressed Continuous Composite Girders date: 2001 words: 5819 flesch: 55 summary: 3 Research significance The literature addressing prestressing of composite beams showed that more attention has been devoted to the study of internally prestressed continuous beams, while those prestressed by external continuous tendons have received less attention, specially as regards experimental testing. Cracking extension and cracking width at different loading stages [8] Amadio, C., Fragiacomo, M.: A finite element method for the study of creep and shrinkage effects in composite beams with deformable shear connection. keywords: beam; composite; concrete; cracking; load; loading; prestressing; slab; steel; support; tendon cache: ap-240.pdf plain text: ap-240.txt item: #678 of 1656 id: ap-242 author: Munro, C.; Krus, P. title: Rapid Prediction of Configuration Aerodynamics in the ConceptualDesign Phase date: 2001 words: 3067 flesch: 43 summary: Advances in flight control certainly allow for a wide variation in vehicle design that would not otherwise be possible. 2: Influence of design stage on costs and the ability to in- fluence the design Fig. 3: Conceptual design process with physical and virtual modelling elements external configuration) a few may be selected on the basis of initial empirical analysis to proceed to more detailed model- ling and experimental investigation. keywords: aerodynamic; cost; design; fig; flight; testing; tunnel; water cache: ap-242.pdf plain text: ap-242.txt item: #679 of 1656 id: ap-244 author: Holický, M. title: Prospects for Advanced Engineering Design Based on Risk Assessment date: 2001 words: 3841 flesch: 53 summary: If the failure of structure F due to a particular situation Hi occurs with the conditional probability P(F|Hi), then the total probability of failure pF is given as: � � � �p F H HF The total expected cost Ctot can then be given by a simplified equation (3) as a sum � � � � � � � �C C C C p Ctot f� � � � 14 15 16 1713 8 10 11 11 12 12, , , (6) where, as described above, C14(13) is the cost depending on the state of node 13, C15(8, 10, 11) is the damage cost depend- ing on the states of nodes 8, 10 and 11, and C16(11, 12) is the cost due to flashover depending on the state of nodes 11 and 12. keywords: cost; failure; fire; node; probability; structural; � � cache: ap-244.pdf plain text: ap-244.txt item: #680 of 1656 id: ap-2445 author: Šoltés, Martin; Červenka, Milan title: ELECTRODYNAMIC LOUDSPEAKER-DRIVEN ACOUSTIC COMPRESSOR date: 2015 words: 3588 flesch: 60 summary: Acoustic pressure amplitudes that they obtained were more than an order of magnitude larger than it had been possible before. Keywords: acoustic compressor, acoustic resonator, high amplitude acoustic field. keywords: air; amplitude; delivery; figure; flow; pressure; resonator; valve cache: ap-2445.pdf plain text: ap-2445.txt item: #681 of 1656 id: ap-2449 author: Attia, Abdel-Fattah A. title: INTELLIGENT CONTROLLER FOR TRACKING A 14-INCH CELESTRON TELESCOPE date: 2018 words: 3849 flesch: 63 summary: “Modified PSO for optimal tuning of fuzzy PID controller.” [7] Abdo MM, Vali AR, Toloei AR, Arvan MR. Stabilization loop of a two axes gimbal system using self-tuning PID type fuzzy controller. keywords: controllers; dec; figure; flc; particle; pid; pso; telescope cache: ap-2449.pdf plain text: ap-2449.txt item: #682 of 1656 id: ap-2459 author: Kracík, Petr; Pospíšil, Jiří title: EFFECT OF TUBE PITCH ON HEAR TRANSFER IN SPRINKLED TUBE BUNDLE date: 2015 words: 3781 flesch: 72 summary: 7.2. litres per minute, was 40 °C, or alternatively 45 °C. Keywords: sprinkled; tube bundle; heat transfer; tube pitch. they are for instance tube diameters (tested [6] for example), tube pitches in a bundle (tested [7] for example) or a physical condition of a falling film liquid and heat transfer (tested [8–10] for example). keywords: coefficient; film; flow; heat; heat transfer; liquid; transfer; tube cache: ap-2459.pdf plain text: ap-2459.txt item: #683 of 1656 id: ap-246 author: Alfaro-Cid, E.; McGookin, E. W.; Murray-Smith, D. J. title: Genetic Algorithm Optimisation of a Ship Navigation System date: 2001 words: 4727 flesch: 53 summary: They have three basic modes of operation: propor- tional action, in which the actuation signal is proportional to the error signal, integral action, when the actuation signal is proportional to the time integral of the error signal, and derivative action, where the actuation signal is proportional to the time derivative of the error signal, and their transfer function is given by: � � � � � �D s K K s K s E sI D � � . � � � �1 0001 10 2 2c d keywords: controller; cost; heading; input �; optimisation; propulsion; � � cache: ap-246.pdf plain text: ap-246.txt item: #684 of 1656 id: ap-2460 author: Zemčík, Oskar; Sedlák, Josef; Chladil, Josef title: CHANGES IN THE SURFACE LAYER OF ROLLED BEARING STEEL date: 2015 words: 2148 flesch: 63 summary: Various types of roller bearings are made, ranging from the most common ball bearings through tapered, cylindrical, and barrel bearings to special types for specific purposes. Steel for roller bearings 14109.4, 10000×, roller-burnished by a working force of 2500N: (left) a replica at a depth of 0.2mm below the roller-burnished surface; (right) a replica 0.01mm below the roller-burnished surface. keywords: bearing; burnishing; element; layer; roller; stress; surface cache: ap-2460.pdf plain text: ap-2460.txt item: #685 of 1656 id: ap-2461 author: Jílková, Lenka; Ciahotný, Karel; Kusý, Jaroslav title: PYROLYSIS OF BROWN COAL USING A CATALYST BASED ON W–Ni date: 2015 words: 2590 flesch: 62 summary: 4: Content of phenol, 4-methylphenol and 2,4-dimethylphenol in organic parts of pyrolysis condensates 0 1 2 3 4 5 6 7 8 pyrolysis of brown coal pyrolysis of brown coal + alum.pyrolysis of brown coal + alum. + cat. However, it is problematic to refine the liquids from brown coal pyrolysis, because high molecular compounds are produced, and the sample solidifies. keywords: alumina; brown; catalyst; coal; content; pyrolysis cache: ap-2461.pdf plain text: ap-2461.txt item: #686 of 1656 id: ap-2463 author: Havlík, Jan; Dlouhý, Tomáš title: CONDENSATION OF WATER VAPOR IN A VERTICAL TUBE CONDENSER date: 2015 words: 3978 flesch: 62 summary: Keywords: condensation; vertical tube condenser; heat transfer coefficient. The Nusselt condensation model, which is often recommended for calculating the con- densing side HTC, is derived for conditions which need not be satisfied in real operation keywords: condensation; condensation htc; film; flow; htc; method; shell; tube cache: ap-2463.pdf plain text: ap-2463.txt item: #687 of 1656 id: ap-248 author: Pohl, J.; Warell, A.; Krus, P.; Palmberg, J.-O. title: Conceptual Design of a Hydraulic Valve Train System date: 2001 words: 5099 flesch: 56 summary: 12: Opening of check-valve, main stage and solenoid valves and corresponding oil flows for the FluMeS-system 10.0 8.0 6.0 4.0 2.0 0.0 -2.0 15.0 10.0 5.0 0.0 2.00 10× -2 1.50 10× -2 1.00 10× -2 5.00×10 -3 0.00 Time [s] V a lv e o p e n in g [m m ] In p u ts ig n a l [V ] Inputsignal Fig. 13: Simulated (dashed) and given valve opening for Fords- -system as well as input signals to the solenoid valves for an engine speed of 6000 rpm Check valve 1.20 1.00 0.80 0.60 0.40 0.20 0.00 10.0 8.0 6.0 4.0 2.0 0.0 2.00×10 -2 1.50 10× -2 1.00 10× -2 5.00 10× -3 0.00 Time [ms] C h e c k -. The advantage with this type of valve train system is that the hydraulic piston remains due to the check-valve in the ex- tend position irrespective of the solenoid valves state. keywords: concept; design; engine; function; oil; pressure; simulation; solenoid; system; train; valve cache: ap-248.pdf plain text: ap-248.txt item: #688 of 1656 id: ap-2493 author: Sedlak, Josef; Zemčík, Oskar; Slaný, Martin; Chladil, Josef; Kouřil, Karel; Sekerka, Vít; Rozkošný, Luboš title: PRODUCTION OF PROTOTYPE PARTS USING DIRECT METAL LASER SINTERING TECHNOLOGY date: 2015 words: 4319 flesch: 55 summary: Discussion Nowadays prototype production is realized with the help of programmable power and hydraulic brakes or with the help of a 3D laser technology that pro- vides a high accuracy, minimal heat deformation and high-speed machining of metal parts. The setting of the price of prototype parts according to data volumes of individual models in STL format is a part of the company know-how. keywords: additive; dmls; forming; metal; method; parts; price; production; prototype; technology cache: ap-2493.pdf plain text: ap-2493.txt item: #689 of 1656 id: ap-2495 author: Skočilas, Jan; Palaziuk, Ievgen title: CFD SIMULATION OF THE HEAT TRANSFER PROCESS IN A CHEVRON PLATE HEAT EXCHANGER USING THE SST TURBULENCE MODEL date: 2015 words: 4813 flesch: 57 summary: Keywords: CFD; simulation; ANSYS CFX; ANSYS CFD-Post; heat transfer; plate heat exchanger; chevron corrugated plates; pressure drop; heat transfer coefficient. A simulation allows us to clearly demonstrate that the phenomenon of non-uniform distribution of the fluid is a major factor affecting the performance of plate heat exchangers, which can be weakened by rolling guide area in the corrugated board keywords: coefficient; drop; exchanger; flow; heat; heat transfer; model; plate; pressure; results; simulation; transfer cache: ap-2495.pdf plain text: ap-2495.txt item: #690 of 1656 id: ap-250 author: Kolman, D. title: Analysis of a Thermal Plasma Diamond CVD System date: 2001 words: 2397 flesch: 49 summary: 3: Contours of the axial velocity and enthalpy for a laminar, Prandtl and k-� turbulent plasma jet 3 Turbulent flow modeling Modeling of the turbulence was approached in two ways: (1) Using Prandtl’s free shear layer model for eddy viscosity The focus of this paper is on the second stage – the interaction of the plasma flow (plasma jet) with the surround- ing atmosphere and with the substrate located downstream. keywords: jet; plasma; system; temperature; torch; velocity cache: ap-250.pdf plain text: ap-250.txt item: #691 of 1656 id: ap-252 author: Chlupová, A.; Heger, J.; Vašek, A. title: Fatigue Crack Initiation and Early Growth in GLARE 3 Fiber-metal Laminate Subjected to Mixed Tensile and Bending Loading date: 2001 words: 2704 flesch: 58 summary: The number of cycles necessary for fatigue crack initiation in metal layers of the laminate was determined by the local plastic strain at the notch edge in the individual layers. Relation (2) holds for v in �m and �layer in MPa and can also be used for predicting the crack growth rate and/or residual life in all metal layers of the laminate when �layer is known. keywords: crack; fatigue; layer; metal; stress cache: ap-252.pdf plain text: ap-252.txt item: #692 of 1656 id: ap-2536 author: Hádková, Kristýna; Tekáč, Viktor; Ciahotný, Karel; Beňo, Zdeněk; Vrbová, Veronika title: TREATMENT OF NATURAL GAS BY ADSORPTION OF CO2 date: 2015 words: 3534 flesch: 64 summary: Apart from burning, one of the possible uses of natural gas is as a fuel for motor vehicles. There are two types of fuel from natural gas — CNG (Compressed Natural Gas) or LNG (Liquefied Natural Gas). keywords: carbon; co2; desorption; gas; pressure; sieve cache: ap-2536.pdf plain text: ap-2536.txt item: #693 of 1656 id: ap-254 author: Macek, J.; Takáts, M. title: Involvement of Thermodynamic Cycle Analysis in a Concurrent Approach to Reciprocating Engine Design date: 2001 words: 6090 flesch: 58 summary: The chemical transformation of species yields for concen- tration changes, using the stoichiometric transformation ma- trix together with Guldberg-Waage-Arrhenius laws (5) � � � � � �V c t C m t C V c t d d d d d d s chem s*r r s*r r� � � � , (4) � �d d er r b E R T X x Y y Z zc t K T c c c� � � � � � � � � � � � � � � � � . Thus in the case of Cartesian coordinates (� stands for friction losses at walls, and in this case another closure equation is needed for them, e.g., Stokes’s and Reynolds’s hypotheses, and a turbulence model): � ��m w t V w w p A j j j keywords: d d; engine; j j; j �; k �; model; s �; t j; t t; � d; � � cache: ap-254.pdf plain text: ap-254.txt item: #694 of 1656 id: ap-2550 author: Miskova, L.; Novák, P.; Hudec, R.; Novotná, M. title: ASTRONOMICAL GLASS PLATE NEGATIVES: MONITORING OF EMULSION LAYER DETERIORATION date: 2016 words: 2712 flesch: 58 summary: The main period when glass plate negatives were used in astronomy was between 1890–1980. 5. Conclusions We examined a set of glass plate negatives using chemico-analytical tools such as FTIR spectroscopy and SEM/EDS. keywords: emulsion; emulsion layer; glass; golden; layer; negatives; plate; spot cache: ap-2550.pdf plain text: ap-2550.txt item: #695 of 1656 id: ap-2551 author: Skopec, Pavel; Hrdlička, Jan; Opatřil, Jan; Štefanica, Jiří title: NOx EMISSIONS FROM BUBBLING FLUIDIZED BED COMBUSTION OF LIGNITE COAL date: 2015 words: 3653 flesch: 56 summary: Although GYC has a lower nitrogen content than CBC, it is more reactive and produces higher NOx emissions. As the fluidization velocity increases and the amount of secondary air decreases, there is an increase in NOx emissions. keywords: air; bed; effect; emissions; nitrogen; nox; oxygen cache: ap-2551.pdf plain text: ap-2551.txt item: #696 of 1656 id: ap-256 author: Murray-Smith, D. J. title: The Validation of Computer-based Models in Engineering: Some Lessons from Computing Science date: 2001 words: 3345 flesch: 39 summary: Acta Polytechnica Vol. 41 No. 4–5/2001 45 The Validation of Computer-based Models in Engineering: Some Lessons from Computing Science D. J. Murray-Smith Questions of the quality of computer-based models and the formal processes of model testing, involving internal verification and external validation, are usually given only passing attention in engineering reports and in technical publications. For example version control techniques are routinely used in software development but are seldom applied in a rigorous fashion for simulation model development, maintaining the model throughout its life cycle keywords: computer; development; model; simulation; software; system; testing; validation cache: ap-256.pdf plain text: ap-256.txt item: #697 of 1656 id: ap-2575 author: Beniak, Juraj; Križan, Peter; Matúš, Miloš title: A COMPARISON OF THE TENSILE STRENGTH OF PLASTIC PARTS PRODUCED BY A FUSED DEPOSITION MODELING DEVICE date: 2015 words: 4801 flesch: 60 summary: This again points to the brittleness of the model produced from ABS plastic material using FDM technology. There are measurements where tensile strength values are reached that similar to the average values presented in Table 3. keywords: degrees; direction; fibers; fig; layers; orientation; strength; tensile cache: ap-2575.pdf plain text: ap-2575.txt item: #698 of 1656 id: ap-2578 author: Hanakova, Lenka; Socha, Vladimir; Schlenker, Jakub; Cakrt, Ondrej; Kutilek, Patrik title: ASSESSMENT OF POSTURAL INSTABILITY IN PATIENTS WITH A NEUROLOGICAL DISORDER USING A TRI-AXIAL ACCELEROMETER date: 2015 words: 5499 flesch: 57 summary: This method is used for diagnosing cerebellar disease manifested by tremors or by swaying, since it is primarily designed for use in neurology to dis- cover relationships between neurological disorders and postural trunk movements in 3-D space. Although tri-axial IMUs have been used 229 http://dx.doi.org/10.14311/AP.2015.55.0229 http://ojs.cvut.cz/ojs/index.php/ap L. Hanakova, V. Socha, J. Schlenker et al. Acta Polytechnica for quantifying postural instability in clinical practice, the methods for evaluating the measured data usu- ally use only two variables out of the three measured variables. keywords: accelerations; confidence; data; ellipsoid; fos; patients; pts; standing; subjects; trunk cache: ap-2578.pdf plain text: ap-2578.txt item: #699 of 1656 id: ap-258 author: Vyhlídal, T.; Zítek, P. title: Control System Design Based on a Universal First Order Model with Time Delays date: 2001 words: 3874 flesch: 66 summary: u u (8) � � � � � �T u u u u � �sin tan cos� � � � � � � . The ratio between the real and imaginary part of a complex pole is known as relative damp- ing � � �� . keywords: control; model; parameters; system; time; � � cache: ap-258.pdf plain text: ap-258.txt item: #700 of 1656 id: ap-2594 author: Križan, Peter; Matúš, Miloš; Beniak, Juraj title: RELATIONSHIP BETWEEN COMPACTING PRESSURE AND CONDITIONS IN PRESSING CHAMBER DURING BIOMASS PRESSING date: 2016 words: 4172 flesch: 56 summary: Cross-view of experimental pressing stend (1—pressing chamber; 2—pressing chamber flange; 3—start-up chamber; 4—counter pressure plug; 5— pressing piston; 6—pressed material). Dependence of axial pressure Pa on length of pressing chamber Lp and friction coefficient µ (at constant pressing chamber diameter dp = 20mm) keywords: axis; briquette; chamber; length; pressing; pressure cache: ap-2594.pdf plain text: ap-2594.txt item: #701 of 1656 id: ap-2595 author: Matúš, Miloš; Križan, Peter; Beniak, Juraj; Šooš, Ľubomír title: EFFECTS OF INITIAL MOISTURE CONTENT ON THE PRODUCTION AND QUALITY PROPERTIES OF SOLID BIOFUEL date: 2015 words: 3826 flesch: 58 summary: It also shows the percentage of the change in moisture content of the briquettes after five days with initial moisture content of spruce sawdust calculated on the basis of the initial moisture. The final moisture content of the pellets or bri- quettes from biomass is greatly dependent on process conditions such as initial moisture content, tempera- ture, and pressure. keywords: biomass; briquettes; content; days; density; material; moisture; moisture content; quality cache: ap-2595.pdf plain text: ap-2595.txt item: #702 of 1656 id: ap-260 author: Vacek, J. title: Stress Distribution in a Coal Seam before and after Bump Initiation date: 2001 words: 2315 flesch: 69 summary: We observed the mechanism and the history of coal bumps. 5 Conclusion A combination of experimental and mathematical models appears very appropriate for a study of the stress distribu- tion in a coal seam before and after bump initiation. keywords: bump; fig; force; tum cache: ap-260.pdf plain text: ap-260.txt item: #703 of 1656 id: ap-262 author: Menzies, R. title: Computational Investigation of Flows in Diffusing S-shaped Intakes date: 2001 words: 3886 flesch: 58 summary: A feature of s-duct intake flow is the genera- tion of secondary flow off the first bend as described in the introduction. One of the main problems of turbulence closures in intake flows is the transition of the freestream from laminar to turbulent over the intake cowl region. keywords: bend; engine; flow; intake; mass; mass flow; model; pressure cache: ap-262.pdf plain text: ap-262.txt item: #704 of 1656 id: ap-264 author: Strohmayer, A. title: Improving Aircraft Design Robustness with Scenario Methods date: 2001 words: 4018 flesch: 47 summary: Keywords: aircraft design, scenario methods, requirements, design evaluation, technology strategy. As shown in Figure 2, there are essentially three fundamental aspects of scenario implementation in aircraft design: definition of market requirements, design evaluation, and identification of the level of technology to implement in the new design. keywords: aircraft; design; evaluation; factor; future; market; methods; process; requirements; scenario cache: ap-264.pdf plain text: ap-264.txt item: #705 of 1656 id: ap-266 author: Marková, J.; Holický, M. title: Credibility of Design Procedures date: 2001 words: 4044 flesch: 48 summary: The following relationship between the average crack width wm and the characteristic crack width wk can be considered � �w w u vk m p� �1 , (10) where v is a coefficient of variation expressing up to 40 % variability of crack width and up is an upper fractile of the standardised normal variable for probability p based on the assumption of normal distribution of crack widths. 3 Reliability In accordance with traditional reliability theory, a struc- ture can be considered as reliable if the following condition is satisfied P Pf t� , or � �� t (4) where the probability of failure Pf is given as � �� � � � � P P keywords: crack; credibility; design; limit; reliability; width; � � cache: ap-266.pdf plain text: ap-266.txt item: #706 of 1656 id: ap-268 author: Friedl, J. title: Aerodynamic Design of a Tailless Aeroplan date: 2001 words: 2653 flesch: 69 summary: �w �0 CL� �CL� 16: Local CL along span, unsymmetrical cases �0 CM0as CL� CM� keywords: deg; fig; lift; wing cache: ap-268.pdf plain text: ap-268.txt item: #707 of 1656 id: ap-270 author: Vukazich, S.; Marek, P. title: Structural Design Using Simulation Based Reliability Assessment date: 2001 words: 4722 flesch: 57 summary: In this manner, the deformation of the tank can be expressed as: � � � � � �u x t x Z t, � � . 11 and the fundamental period, T, of the elevated tank structure: � � � �S L L m S m Sab a a� � �ü max * *� � � . keywords: fig; load; probability; reliability; structure; tank; variable; � � cache: ap-270.pdf plain text: ap-270.txt item: #708 of 1656 id: ap-272 author: Schieck, F.; Schmitt, D. title: Cargo Aircraft Conceptual Design Optimisation Using a Flexible Computer-Based Scaling Approach date: 2001 words: 4431 flesch: 44 summary: Keywords: aircraft conceptual design, aircraft scaling, mass growth factor, aircraft multidisciplinary design optimisation. Relying on this data, important trade-off decision-making processes during aircraft conceptual design are enabled and backed up with extended knowledge about the evolving aircraft. keywords: aircraft; design; mass; mission; model; performance; process; requirements; scaling; table; wing cache: ap-272.pdf plain text: ap-272.txt item: #709 of 1656 id: ap-274 author: Rieger, F. title: Power Characteristics of a Screw Agitator in a Tube date: 2001 words: 1677 flesch: 56 summary: Substracting equations above we obtain the following equation for � � � �a P P e e� � �max * min * max * min * (9) Coefficient c can be expressed from (8) c P ae� �max * max * (10) 3 Results and discussion The procedure proposed above was applied for a screw ag- itator with the following parameters: pitch s = 2D, root diameter d = 0.2 D and length L = 1.4 D – see Fig. In the creeping flow regime Eq.(1) reduces to � �P P e* * *� (5) and the dimensionless power characteristic is linear P c ae* *� � (6) keywords: characteristics; fig; power cache: ap-274.pdf plain text: ap-274.txt item: #710 of 1656 id: ap-276 author: Fořt, I.; Jirout, T.; Rieger, F.; Allner, R.; Sperling, R. title: Study of the Blending Efficiency of Pitched Blade Impellers date: 2001 words: 4212 flesch: 62 summary: 1: Typical dependence of dimensionless blending time on the Reynolds number for a high-speed rotary impeller The initial concentration is defined as � �� �c c t0 0� � (5) and the final concentration of the dissolved matter in the agitated liquid is � �� �c c tk � . [s] �U U� �2 % Fig. keywords: blending; impeller; liquid; time; � � cache: ap-276.pdf plain text: ap-276.txt item: #711 of 1656 id: ap-278 author: Böszörményi, L.; Böszörményi, G. title: A Geothermal Energy Supported Gas-steam Cogeneration Unit as a Possible Replacement for the Old Part of a Municipal CHP Plant (TEKO) date: 2001 words: 2893 flesch: 55 summary: 3 Feasibility of utilizing geothermal heat directly in the district heating network (DHN) The simple, direct use of geothermal heat in the District Heating Network (DHN) cannot be a feasible way of replacing the existing CHP plant under the current economic circumstances, due to its low efficiency. The main reason for this low efficiency is the conflict between geothermal heat and heat produced in cogeneration, which means that the heat produced by the cogeneration unit would be replaced by geothermal heat. keywords: cycle; energy; gas; heat; power; steam; water cache: ap-278.pdf plain text: ap-278.txt item: #712 of 1656 id: ap-280 author: Beshay, K. R.; Kratěna, J.; Fořt, I.; Brůha, O. title: Power Input of High-Speed Rotary Impellers date: 2001 words: 3315 flesch: 68 summary: � (7) which was reduced, according to the present geometry, i.e., T/D = 3 and H/T = 1.0, to the form: � �Po n h DB� � � � � � 10092 0 701 0 165 2 077. sin. . . � � 0 140 2 077 . keywords: impeller; power; � � cache: ap-280.pdf plain text: ap-280.txt item: #713 of 1656 id: ap-2808 author: Juklíček, Jakub; Železný, Václav title: CFD ANALYSIS OF THE SPACER GRIDS AND MIXING VANES EFFECT ON THE FLOW IN THE CHOSEN PART OF THE TVSA-T FUEL ASSEMBLY date: 2015 words: 2623 flesch: 65 summary: Nevertheless, this kind of simula- tion provides comparative data for more significant simplifications of the fuel assembly geometry or for replacement of the part or whole spacer grid geometry by the porous media boundary condition in CFD simu- lation. One of the limiting factors is the complicated geometry of spacer grids. keywords: flow; grid; mixing; spacer; support cache: ap-2808.pdf plain text: ap-2808.txt item: #714 of 1656 id: ap-2810 author: Jeníček, Vít; Diblíková, Linda title: A MATHEMATICAL MODEL OF GALVANIC CORROSION UNDER THE CONDITIONS OF A THIN ELECTROLYTE FILM date: 2016 words: 3736 flesch: 48 summary: A mathematical model of galvanic corrosion under the conditions of a thin electrolyte film was used to evaluate atmospheric corrosion. Keywords: atmospheric corrosion, galvanic corrosion, modelling, weight loss. keywords: bolt; corrosion; curves; exposure; galvanic; loss; polarization; steel; weight; weight loss cache: ap-2810.pdf plain text: ap-2810.txt item: #715 of 1656 id: ap-2813 author: Žitný, Rudolf; Landfeld, Aleš; Skočilas, Jan; Štancl, Jaromír; Flegl, Vlastimil; Houška, Milan title: UNSTEADY FLOW OF THIXOTROPIC COLLAGEN SUBSTANCE IN PIPES date: 2015 words: 4114 flesch: 58 summary: Such a slow variation of flow rate increases the number of time steps (4100 time steps for 151 grid points in the axial direction) and increases the run-time necessary for preliminary identification of thixotropic model parameters. 2D model of velocities and structural parameter profiles (finite differences) Results that are probably more realistic can be obtained by taking into account non-uniform structural parame- ter profiles. keywords: flow; fluid; model; parameter; rate; thixotropic; time cache: ap-2813.pdf plain text: ap-2813.txt item: #716 of 1656 id: ap-282 author: Doubek, J.; Kreidl, M. title: Parasitic Events in Envelope Analysis date: 2001 words: 8190 flesch: 64 summary: Si z Si z� � � � � � � � 1 0 0 1 0 2 0 0 2 0 � � � � � � � � �� �� �� �1 (28) � � � � � � � �� � � � � � � �� �� �~ cos sinx t t Ci z Ci z t Si z Si z� � � � � � 1 0 0 1 0 2 0 0 2 0 1 � � � � � � � � � (29) � � � � � �� � � �� �� � � � � �� �~ cos sinx t t Ci t t Ci t t t keywords: t t; t �; z �; � cos; � d; � x; � y; � � cache: ap-282.pdf plain text: ap-282.txt item: #717 of 1656 id: ap-284 author: Younis, F. I.; Alawy, A. El-Bassuny; Šimák, B.; Ella, M. S.; Madkour, M. A. title: Stellar Image Interpretation System using Artificial Neural Networks: Unipolar Function Case date: 2001 words: 3853 flesch: 62 summary: The momentum term was adopted to be 0.5 in order to accelerate the convergence of the error back-propagation learning algorithm of our SIIS-ANN. 3.6 SIIS-ANN implementation The developed SIIS-ANN deals with CCD image frames for scanning and searching for the Local Central Peaked Pixel (LCPP) whose datum is larger than those of the surrounding ones [9, 10]. Mark the object of interest (star image, cosmic ray event, or noise) on some CCD frames. keywords: images; input; output; pattern; pixel; values cache: ap-284.pdf plain text: ap-284.txt item: #718 of 1656 id: ap-286 author: Badawy, M.; Richta, K. title: Deriving Triggers from Integrity Constraint Specifications in the Database Management Systems date: 2001 words: 4469 flesch: 74 summary: i E W i t t 1 1 3 3 3 2 1 2 2 1 � � � � � � � � � � , , , ,� n. � � � � � � � �� �� � � � � �� � E Ts E Tp p n Therefore we can approximate the probabilities P(i), i � 0, …, n, as: � � � � � � � �� � � � � � � � P P p p p n P keywords: k �; � e; � p; � t; � � cache: ap-286.pdf plain text: ap-286.txt item: #719 of 1656 id: ap-2865 author: Biroš, Milan; Kyslan, Karol; Ďurovský, František title: A HARDWARE-IN-THE-LOOP SIMULATOR BASED ON REAL SKODA SUPERB VEHICLE AND RT-LAB/CARSIM date: 2015 words: 4200 flesch: 63 summary: Skoda Superb vehicle simulator, rear view. This is because the vehicle has the best power transmission from the engine to the pavement with a particular slip value included in vehicle model. keywords: carsim; fig; gear; pedal; position; simulator; steering; superb; time; vehicle; wheel cache: ap-2865.pdf plain text: ap-2865.txt item: #720 of 1656 id: ap-288 author: Filip, J. title: Analytical Model of Modified Traffic Control in an ATM Computer Network date: 2001 words: 4470 flesch: 74 summary: i E W i t t 1 1 3 3 3 2 1 2 2 1 � � � � � � � � � � , , , ,� n. � � � � � � � �� �� � � � � �� � E Ts E Tp p n Therefore we can approximate the probabilities P(i), i � 0, …, n, as: � � � � � � � �� � � � � � � � P P p p p n P keywords: k �; � e; � p; � t; � � cache: ap-288.pdf plain text: ap-288.txt item: #721 of 1656 id: ap-290 author: Pokorná, O.; Mocková, D. title: Models of Financing and Available Financial Resources for Transport Infrastructure Projects date: 2001 words: 2208 flesch: 46 summary: A typical feature of transport infrastructure projects is that they are expensive and take a long time to construct. 2 Available financial resources Finance resources for transport infrastructure projects can be divided into public and alternative. keywords: financing; infrastructure; project; sector; transport cache: ap-290.pdf plain text: ap-290.txt item: #722 of 1656 id: ap-292 author: Římal, J. title: Measurement of Temperature Fields in Long Span Concrete Bridges date: 2001 words: 3384 flesch: 65 summary: These most important factors are combined into the equivalent sun-temperature Tas expressed in equation (1) � �T T I pas a g� � 1 � (1) where Ta � Ta(t) air temperature Ig � Ig(t) intensity of global solar radiation � � �(v) heat-transfer coefficient depending on air speed p coefficient of surface absorption t time The value of Tas is applied in Fourie’s law by expression (2) � �� � � �� � � �n p T n T T� (2) where T � T(x, y, t) temperature field � surface of area where the heat-transfer boundary condition is used n vector of outside normal �n coefficient of thermal conductivity Keywords: Nusle bridge in Prague, measurement of thermal fields, calculation of temperature fields, evaluation of stress fields. keywords: c o; e t; r e cache: ap-292.pdf plain text: ap-292.txt item: #723 of 1656 id: ap-294 author: Ficker, T.; Myslín, J.; Podešvová, Z. title: Non-linear Temperature Profiles date: 2001 words: 2406 flesch: 62 summary: The solution of the system (20), (21) for parabolic conduc- tivity function (15) and the boundary conditions T(0) � T1, T(d) � T2 reads � � � �q T T d T T T T d a T T Reff � � � � � � � �1 2 1 0 3 2 0 3 1 2 3 � , (27) � �� � � �� � � � � � � � � � x a T x T T x T a T T a T T T T a T T � � � � � � � � � � � 0 3 0 0 1 0 3 2 0 3 0 2 1 1 0 3 3 3 � � d, (28) � � � �� � � � R d a T T T T T T T T eff * � � � � � � � � � 1 0 2 1 0 2 0 2 0 2 03 � � d eff� , (29) � � � � � �� � � �� �� �� � � � � � � �eff T T T T� � � � � � 1 3 1 2 1 0 2 0 0 . 2 Variable thermal conductivity Let us assume a dry material inside a wall whose thermal conductivity � depends only on temperature T(x) � �� �d d � T x x 0. (9) keywords: t t; t �; � d; � � cache: ap-294.pdf plain text: ap-294.txt item: #724 of 1656 id: ap-2942 author: Halabuk, Dávid; Martinec, Jiří title: CALCULATION OF STRESS AND DEFORMATION IN FUEL ROD CLADDING DURING PELLET-CLADDING INTERACTION date: 2015 words: 2203 flesch: 63 summary: It is possible to evaluate which shape of fuel pellet is the most appropriate in consideration of stress and deformation forming in fuel cladding, axial dilatation of fuel, and radial temperature distribution in the fuel rod, based on the obtained results. The calculations are done for 4 different shapes of fuel pellets. keywords: cladding; deformation; fuel; pellet; stress cache: ap-2942.pdf plain text: ap-2942.txt item: #725 of 1656 id: ap-2945 author: Kratky, Lukas; Jirout, Tomáš title: MECHANICAL DISINTEGRATION OF WHEAT STRAW BY ROLLER-PLATE GRIND SYSTEM WITH SHARP-EDGED SEGMENTS date: 2015 words: 6984 flesch: 60 summary: [7] studied the effect of wheat straw particle size on the efficiency of biogas digesters operating on agricultural and for- est residues. [6] studied the effect of wheat straw particles on biogas yield and on residue production in anaerobic technology. keywords: biogas; biomass; disintegration; energy; kwh; mill; particle; production; size; straw; t−1; wheat cache: ap-2945.pdf plain text: ap-2945.txt item: #726 of 1656 id: ap-2947 author: Dostal, Jan; Kuzel, Jan title: ANALYTICAL METHODS FOR CALCULATING FAN AERODYNAMICS date: 2015 words: 3992 flesch: 56 summary: Aerodynamic performance of advanced axial flow fan for power industry within its operational range, Proceedings of ASME GT2014-25339, Dusseldorf, Germany, pp.13 http://dx.doi.org/10.1115/gt2014-25339 [4] Cyrus, V.: The effect of the Reynolds number on the three-dimensional flow in a straight compressor cascade. Keywords: aerodynamics; fan; impeller; blade; total pressure; static pressure; flow tube. keywords: fan; flow; impeller; measuring; model; pressure cache: ap-2947.pdf plain text: ap-2947.txt item: #727 of 1656 id: ap-2950 author: Petrů, Jan; Kludka, Michal; Krivda, Vladislav; Mahdalova, Ivana; Zeman, Karel title: VERIFICATION OF CENSUS DEVICES IN TRANSPORTATION RESEARCH date: 2015 words: 4176 flesch: 64 summary: NU-METRICS NC-200 and NU-METRICS NC-30x traffic analyzer The Nu-Metrics NC-200 traffic analyser is used for measuring vehicle speed, and the intensity and com- 415 http://dx.doi.org/10.14311/AP.2015.55.0415 http://ojs.cvut.cz/ojs/index.php/ap J. Petru, M. Kludka, V. Krivda et al. Acta Polytechnica Direction to Opava Hypermarket Globus Direction to center Fig. This article evaluates and subsequently compares data obtained from various counting devices measur- ing the intensity of traffic on a roundabout in the city of Ostrava. keywords: counting; devices; measurement; metrics; number; speed; traffic; vehicles cache: ap-2950.pdf plain text: ap-2950.txt item: #728 of 1656 id: ap-2952 author: Klimko, Marek; Okresa, Daniel title: MEASUREMENTS ON THE VT 400 AIR TURBINE date: 2016 words: 4480 flesch: 63 summary: Stationary blade Stationary blade Stationary blade Moving bladevariant 1 (2010) variant 2 (2011) variant 3 (2012) Experimental and numerical development of turbine blades of high efficiency. keywords: blades; blading; efficiency; int; reaction; stage; stationary; turbine cache: ap-2952.pdf plain text: ap-2952.txt item: #729 of 1656 id: ap-296 author: Attia, Abdel-Fattah; Horáček, P. title: Modeling Nonlinear Systems by a Fuzzy Logic Neural Network Using Genetic Algorithms date: 2001 words: 5189 flesch: 66 summary: 14 shows the output model and the plant for the input: � � � �u k k� � � � �05 2 250. The actual input value is compared with the rule pre- mise using degree of overlapping: � � � � � �� � � �D X keywords: fig; flnn; fuzzy; laga; model; parameters; sets; � y; � � cache: ap-296.pdf plain text: ap-296.txt item: #730 of 1656 id: ap-2966 author: Lisý, Martin; Baláš, Marek; Špiláček, Michal; Skála, Zdeněk title: OPERATING SPECIFICATIONS OF CATALYTIC CLEANING OF GAS FROM BIOMASS GASIFICATION date: 2015 words: 3935 flesch: 51 summary: The efficiency of tar elimination reached 99.5%, the tar concentration complied with limits for use of the gas in combustion engines, and the tar content reached approximately 35mg/m3 n. The results of the measurements conducted in laboratories helped us design a pilot technology for catalytic gas cleaning. The fundamental classification dis- tinguishes between primary and secondary measures for tar elimination. keywords: biomass; catalyst; cleaning; dolomite; elimination; gas; gasification; pressure; tar; temperature cache: ap-2966.pdf plain text: ap-2966.txt item: #731 of 1656 id: ap-2970 author: Nasisi, Salvatore; Valášek, Michael; Vampola, Tomáš title: AN INTERPOLATION METHOD FOR DETERMINING THE FREQUENCIES OF PARAMETERIZED LARGE-SCALE STRUCTURES date: 2015 words: 5758 flesch: 47 summary: doi:10.2514/6.2009-2432 [18] H. Panzer, R. Eid, B. Lohmann, Parametric model order reduction by matrix interpolation, Automatisierungstechnik, 58 (2010) 475-484. doi:10.1524/auto.2010.0863 [5] D. G. Meyer, S. Srinivasan, Balancing and Model Reduction for Second-Order Form Linear Systems, IEEE Transactions on Automatic Control, 41 (November 1996) 1632-1644.doi:10.1109/9.544000 [6] A. C. Antoulas, D. C. Sorensen, S. Gugercin, A survey of model reduction methods for large-scale systems, Structured Matrices in Mathematics, Computer Science, and Engineering I, (2001) 193–219. doi:10.1090/conm/280/04630C [7] A. Beattie, Krylov-based model reduction of second-order systems with proportional damping, Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference, (12-15 December 2005). keywords: deformation; frequencies; interpolation; interpolation method; matrices; matrix; method; order; reduction; rotation cache: ap-2970.pdf plain text: ap-2970.txt item: #732 of 1656 id: ap-2974 author: Dragošek, Lukáš; Kociško, Róbert; Kováčová, Andrea; Bidulsky, Robert; Škrobian, Milan title: A COMPACTING PROCESS OF THE EN AW 6060 ALLOY date: 2015 words: 2590 flesch: 62 summary: Compacting chips The two types of chips were compacted under identical conditions (weight 2, 5, 10 g; compacting pressure 300, 400, 500, 600, 700 MPa; and speed 0.83mm/s). Moreover, it was recognized that in the process of small chips compacting, there was obtained lower density than in the case of large chips. keywords: chips; compacting; density; doi; materials; process; processing cache: ap-2974.pdf plain text: ap-2974.txt item: #733 of 1656 id: ap-2978 author: Holčapek, Ondřej; Vogel, Filip; Konvalinka, Petr title: ANALYSIS OF MECHANICAL PROPERTIES OF HYDROTHERMALLY CURED HIGH STRENGTH CEMENT MATRIX FOR TEXTILE REINFORCED CONCRETE date: 2015 words: 4373 flesch: 48 summary: Hydrothermal curing in an autoclave device (with a combination of high pressure and temperature, under the simultaneous effect of steam) provides a sophis- ticated possibility to achieve high final strength in a short time after the first contact between water and cement (approximately 2 days). The bulk density growth is as- 317 O. Holčapek, F. Vogel, P. Konvalinka Acta Polytechnica sociated with denser microstructure and hydration products due to hydrothermal curing conditions. keywords: cement; concrete; conditions; curing; hydrothermal; pressure; properties; strength cache: ap-2978.pdf plain text: ap-2978.txt item: #734 of 1656 id: ap-298 author: Kršňák, I.; Kolcunová, I. title: Partial Discharge Measurements in HV Rotating Machines in Dependence on Pressure of Coolant date: 2002 words: 2390 flesch: 51 summary: For the electro insulating purposes of gases in high voltage equipments it is always valid that � � � �pd pd� min. For this reason we can consider only the “right wing” of Paschen’s curve. (4) If the free path of particle � � �I , where �I is the free path of a particle which at a certain level of strength E gains the ionisation energy WI, from (1) it is possible to write �I keywords: discharge; gas; ionisation; path; pressure; voltage cache: ap-298.pdf plain text: ap-298.txt item: #735 of 1656 id: ap-2982 author: Havrlik, Michal; Ryparová, Pavla title: PROTECTION OF WOODEN MATERIALS AGAINST BIOLOGICAL ATTACK BY USING NANOTECHNOLOGY date: 2015 words: 4364 flesch: 63 summary: The experimental part 3 Materials and methods 3.1 Production of PVA solution 3.2 Produce of nanofiber textiles 3.3 Model organism 3.4 Plate experiment 3.5 Experiment on building block of timber 3.6 Fungicidal activity of polymer solution on agar plate 3.7 Fungicidal activity of nanofiber textiles on agar plate 3.8 Fungicidal activity of polymer solution on wooden blocks 3.9 Fungicidal activity of nanofiber textiles on wooden blocks 4 Results 4.1 Fungicidal activity of polymer solution on agar plate 4.2 Fungicidal activity of nanofiber textiles on agar plate 4.3 Fungicidal activity of polymer solution on wooden blocks 4.4 Fungicidal activity of nanofiber textiles on wooden blocks 5 Discussion and conclusion 5.1 Solutions and textiles 5.2 PVA 5.3 Protective biocide ions 5.4 Summary Acknowledgements References Production of PVA solution The base polymer which we used in this work, is a polyvinyl alcohol (PVA). keywords: agar; fungicidal; growth; nanofiber; polymer; pva; solution; textiles cache: ap-2982.pdf plain text: ap-2982.txt item: #736 of 1656 id: ap-2983 author: Kühnel, M.; Müller, S.; Kreykenbohm, I. Kreykenbohm; Schwarm, F.-W.; Grossberger, C.; Dauser, B. T.; Nowak, M. A.; Pottschmidt, K.; Ferrigno, C.; Rothschild, R. E.; Klochkov, D.; Staubert, R.; Wilms, J. title: SIMULTANEOUS FITS IN ISIS ON THE EXAMPLE OF GRO J1008–57 date: 2015 words: 3142 flesch: 55 summary: Furthermore, it is necessary to distinguish between group parameters and global parameters. The corresponding parameters are called group parameters. keywords: analysis; data; datasets; fits; group; isis; parameters cache: ap-2983.pdf plain text: ap-2983.txt item: #737 of 1656 id: ap-300 author: Dynda, V.; Rydlo, P. title: Large-scale File System Design and Architecture date: 2002 words: 4834 flesch: 59 summary: Data Dependency Edges T Tj i k i� , if � � � �writeset readsetT Tj i k i� � 0, j < k. 2. Precedence Edges T Tj i k i� , if � � � �readset writesetT Tj i k i� � 0, j < k. Both types of edges demonstrate that the transaction processing order has influenced the computation result. keywords: data; file; managers; node; replica; replication; system; � � cache: ap-300.pdf plain text: ap-300.txt item: #738 of 1656 id: ap-3006 author: Kronek, Jakub; Žitný, Rudolf title: FINITE ELEMENT ANALYSIS OF AORTAL BIFURCATION date: 2015 words: 5049 flesch: 56 summary: doi:10.1114/1.121 [7] Y. S. Chatzizisis, A. U. Coskun, M. Jonas, E. R. Edelman, C. L. Feldman and P. H. Stone, “Role of Endothelial Shear Stress in the Natural History of Coronary Atherosclerosis and Vascular Remodeling: Molecular, Cellular, and Vascular Behavior,” Journal of the American College of Cardiology, vol. 49, no. 25, pp. 2379-2393, 2007. doi:10.1016/j.jacc.2007.02.059 [8] F. Gijsen, A. van der Giessen, A. van der Steen and J. Wentzel, “Shear stress and advanced atherosclerosis in human coronary arteries,” JOURNAL OF BIOMECHANICS, vol. 46, no. 2, SI, pp. 240-247, JAN 18 2013. doi:10.1016/j.jbiomech.2012.11.006 [9] S. Zhao, B. Ariff, Q. Long, A. Hughes, S. Thom, A. Stanton and X. Xu, “Inter-individual variations in wall shear stress and mechanical stress distributions at the carotid artery bifurcation of healthy humans,” Journal of Biomechanics, vol. 35, no. 10, pp. 1367-1377, 2002. doi:10.1016/S0021-9290(02)00185-9 [10] S. van Wyk, L. P. Wittberg and L. Fuchs, “Wall shear stress variations and unsteadiness of pulsatile blood-like flows in 90-degree bifurcations,” Computers in Biology and Medicine, vol. 43, no. 8, pp. Polytechnica 55(6):393–400, 2015 1 Introduction 2 Methods 2.1 Geometry of AB 2.2 Experimental measurements of geometries 2.3 Experimental measurements of material properties 2.4 FE models 2.5 Analytical approximation of SCF, maximum stresses and range 3 Results and discussion 3.1 Sizes of the affected regions 3.2 Qualification of the stress in stress concentrations 4 Conclusion References keywords: bifurcation; elastic; figure; model; parameters; pressure; scf; stress; vol; wall cache: ap-3006.pdf plain text: ap-3006.txt item: #739 of 1656 id: ap-302 author: Jokl, M. V. title: Thermal Comfort and Optimum Humidity Part 1 date: 2002 words: 7548 flesch: 58 summary: This limit enables another hygienic requirement for interiors to be estimated: the acceptable difference be- tween air temperature and surface, wall temperature, and the corresponding difference between air temperature and globe temperature in winter. Air temperature in an enclosed space generally increases from floor to ceiling. keywords: air; body; clothing; cold; comfort; environment; fig; heat; human; humidity; operative; temperature cache: ap-302.pdf plain text: ap-302.txt item: #740 of 1656 id: ap-3026 author: Koleňák, Roman; Prach, Michal; Kostolný, Igor title: ULTRASONIC SOLDERING OF Cu AND Al2O3 CERAMICS BY USE OF Bi-La AND Bi-Ag-La SOLDERS date: 2016 words: 4565 flesch: 67 summary: The Bi-Ag – based solder with 2wt.% lanthanum addition and Bi solder with 2wt.% lanthanum addition were studied. Quantitative analysis of chemical composition in selected zones of Bi2La solder. keywords: analysis; bi2la; fig; joint; solder; soldering; temperature cache: ap-3026.pdf plain text: ap-3026.txt item: #741 of 1656 id: ap-3028 author: Urminsky, Jan; Marônek, Milan; Jáňa, Miroslav; Morovič, Ladislav title: ANALYSIS OF WELD JOINT DEFORMATIONS BY OPTICAL 3D SCANNING date: 2016 words: 2628 flesch: 56 summary: Angular deformations are adverse from all group and can degrade the utility of the weld- ment. Angular deformations were not observed throughout the thickness of the material. keywords: atos; bimetal; deformation; max; weld cache: ap-3028.pdf plain text: ap-3028.txt item: #742 of 1656 id: ap-3032 author: Prachař, Aleš title: COMPARISON OF AXIAL FAN ROTOR EXPERIMENTAL DATA WITH CFD SIMULATION date: 2016 words: 2613 flesch: 60 summary: The measured quantities, obtained as functions of radial coordinate, were later utilized to calculate inte- gral values (volume flow rate, average total or static pressure). However, the exit static pressure is influenced by the performance of the rotor at various volume flow rates. keywords: blade; boundary; cfd; data; flow; pressure; rotor; simulation cache: ap-3032.pdf plain text: ap-3032.txt item: #743 of 1656 id: ap-3033 author: Hromadka, David; Chlup, Hynek; Žitný, Rudolf title: INTEGRAL METHODS FOR DESCRIBING PULSATILE FLOW date: 2016 words: 4747 flesch: 67 summary: Keywords: pulsatile flow, integral energy, integral momentum, rigid pipe. To the best of the author’s knowledge, there is no in- tegral energy solution for pulsatile flow that takes into account the reverse flow. keywords: energy; equations; flow; method; momentum; solution; velocity cache: ap-3033.pdf plain text: ap-3033.txt item: #744 of 1656 id: ap-3037 author: Kalde, Nassim; Simonin, Olivier; Charpillet, François title: COMPARISON OF CLASSICAL AND INTERACTIVE MULTI-ROBOT EXPLORATION STRATEGIES IN POPULATED ENVIRONMENTS date: 2015 words: 4912 flesch: 57 summary: Multi-robot exploration consists in coordinating robots for mapping an unknown environment. Multi-robot exploration of unknown environments with identification of exploration completion and post-exploration rendez-vous using ant algorithms. keywords: distance; environment; exploration; frontier; human; interaction; penalties; robot; time cache: ap-3037.pdf plain text: ap-3037.txt item: #745 of 1656 id: ap-3039 author: Kulich, Miroslav; Juchelka, Tomáš; Přeučil, Libor title: COMPARISON OF EXPLORATION STRATEGIES FOR MULTI-ROBOT SEARCH date: 2015 words: 4839 flesch: 67 summary: In addition, approaches based on K-means clustering and assigning the clusters to particular robots are presented in [16, 17] Intuitively, multi-robot search is a process of au- tonomous navigation of a team of mobile robots in an a-priori unknown environment in order to find an ob- 162 http://dx.doi.org/10.14311/AP.2015.55.0162 http://ojs.cvut.cz/ojs/index.php/ap vol. The strategy lacks opti- mality2, since one goal can be selected and explored by many robots as depicted in Fig. 1(a). keywords: environment; exploration; goal; map; means; problem; robots; search; strategies cache: ap-3039.pdf plain text: ap-3039.txt item: #746 of 1656 id: ap-304 author: Ficker, T.; Podešvová, Z. title: Non-isothermal Diffusion of Water Vapour in Porous Building Materials date: 2002 words: 1717 flesch: 62 summary: For this purpose the coefficient of diffusion permeability � is defined as follows � �� T g d p p * � � d 1 2 (1), T T T * � �1 2 2 (2) where d is the thickness of the envelope (wall), gd is diffusion flux and p1, p2 are partial pressures of water vapour at both surfaces of the wall. � � � � � � d ddp T g R k a bx xn x p T p x T x � � � � � � ��� � 01 1 , (12) � � � � � � � � � g p T p T kb n R a a bx x x n nd � � � � � � � � � �� � 1 1 1 1 1 � . keywords: t t; � d; � � cache: ap-304.pdf plain text: ap-304.txt item: #747 of 1656 id: ap-3040 author: Matignon, Laetitia; Jeanpierre, Laurent; Mouaddib, Abdel-Illah title: DECENTRALIZED MULTI-ROBOT PLANNING TO EXPLORE AND PERCEIVE date: 2015 words: 6167 flesch: 60 summary: The idea is to take advantage of sparse interactions by allowing each robot to calculate locally a strategy that maximizes the explored space while minimizing robots interactions. at http://liris.cnrs.fr/laetitia.matignon/ research.html various exploration tasks with real robots, and some interesting situations are underlined as global task repartition or local coordination. keywords: agent; decision; dvf; exploration; function; mdp; module; object; pictures; recognition; reward; robot; time cache: ap-3040.pdf plain text: ap-3040.txt item: #748 of 1656 id: ap-3047 author: Kühnel, Matthias; Falkner, Sebastian; Grossberger, Christoph; Ballhausen, Ralf; Dauser, Thomas; Schwarm, Fritz-Walter; Kreykenbohm, Ingo; Nowak, Michael A.; Pottschmidt, Katja; Ferrigno, Carlo; Rothschild, Richard E.; Martínez-Núñez, Silvia; Torrejón, José Miguel; Fürst, Felix; Klochkov, Dmitry; Staubert, Rüdiger; Kretschmar, Peter; Wilms, Jörn title: THE GOODNESS OF SIMULTANEOUS FITS IN ISIS date: 2016 words: 4443 flesch: 66 summary: After a model with p parameters has been defined each of these data-groups is fitted by an individual set of parameters, called group parameters. A model with p + P parameters is fitted such that each data-group has its own set of pi parameters, called group parameters. keywords: data; datasets; fit; goodness; group; model; parameters; red; residuals; simultaneous cache: ap-3047.pdf plain text: ap-3047.txt item: #749 of 1656 id: ap-3056 author: Novotný, Jan; Nožička, Jiří title: MODEL OF HEAT SIMULATOR FOR DATA CENTERS date: 2016 words: 6532 flesch: 52 summary: Keywords: data center; cooling; heat simulator; PIV; measurement. 3 Measurement of performance characteristic of heat simulator For the purpose of verifying the functionality of the designed model, it was necessary to carry out several basic measurements. keywords: field; figure; heat performance; heat simulator; outlet; performance; server cache: ap-3056.pdf plain text: ap-3056.txt item: #750 of 1656 id: ap-3058 author: Jogl, Marcel; Reiterman, Pavel; Holčapek, Ondřej; Koťátková, Jaroslava; Konvalinka, Petr title: RESIDUAL PROPERTIES OF FIBER-REINFORCED REFRACTORY COMPOSITES WITH A FIRECLAY FILLER date: 2016 words: 4068 flesch: 48 summary: Microstructural changes and residual properties of fiber reinforced cement composites exposed to elevated temperatures. Our experimental program has confirmed the great potential of ceramic powder, and especially metakaolin, as a supplementation material for alumi- nous cement in high alumina cement based composites. keywords: cement; ceramic; composites; materials; properties; strength; temperature cache: ap-3058.pdf plain text: ap-3058.txt item: #751 of 1656 id: ap-306 author: Jokl, M. V. title: Thermal Comfort and Optimum Humidity Part 2 date: 2002 words: 3818 flesch: 58 summary: For warm air heating, the above pattern of air streams within a room is the best way to prevent the formation of a cold draft. The basic principle for warm air heating is that warm air must be released from above and must then go down, i.e., it must be supplied to the ceiling of a room. keywords: air; cooling; heating; room; ventilation; window cache: ap-306.pdf plain text: ap-306.txt item: #752 of 1656 id: ap-3064 author: Sirůčková, Hana title: EXPERIMENTAL LEVELLING AT THE INTERFACE OF OPTICAL ENVIRONMENTS date: 2016 words: 4727 flesch: 61 summary: Calibration of temperature sensors Temperature sensors were immersed in water to elimi- nate short-term environmental influences, and were all in the same condition. 2/2016 Experimental Levelling at the Interface of Optical Environments Date A1–A3 (mm) Difference from levelling line around (mm) dL (mm) Difference from levelling line around minus correction of dL (mm) 3 November 2013 Koni 007 20.30 0.57 0.23 0.34 1 December 2013 Koni 007 20.50 0.37 0.41 −0.04 27 July 2014 Koni 007 21.50 −0.77 −0.28 −0.49 8 February 2015 Koni 007 21.90 −1.17 −0.74 −0.43 9 February 2014 DNA 03 20.69 0.04 0.27 −0.23 6 April 2014 DNA 03 20.60 0.13 −0.31 0.44 27 July 2014 DNA 03 21.63 −0.89 −0.63 −0.26 8 February 2015 DNA 03 21.75 −1.02 −0.47 −0.55 Table 5. keywords: building; levelling; line; refraction; temperature cache: ap-3064.pdf plain text: ap-3064.txt item: #753 of 1656 id: ap-308 author: Pokorná, O.; Mocková, D. title: The Risks of Investments in Transport Infrastructure Projects date: 2002 words: 2880 flesch: 48 summary: Financial risks: interest rates Financial risk is the risk that project cash flows may be insufficient to cover debt servicing and then to pay an adequate return on sponsor equity. Infrastructure development requires that project risks and responsibilities be assigned to the public or private entity that is best able to manage them. keywords: analysis; construction; guarantees; project; revenue; risks; sector; traffic cache: ap-308.pdf plain text: ap-308.txt item: #754 of 1656 id: ap-3088 author: Horník, Jakub; Krum, Stanislav; Tondl, David; Puchnin, Maxim; Sachr, Pavel; Cvrček, Ladislav title: MULTILAYER COATINGS Ti/TiN, Cr/CrN AND W/WN DEPOSITED BY MAGNETRON SPUTTERING FOR IMPROVEMENT OF ADHESION TO BASE MATERIALS date: 2015 words: 1959 flesch: 57 summary: Highest adhesion was achieved in case of W/WN and Cr/CrN. The combi- nation of highest hardness, modulus of elasticity and best adhesion promotes W based coatings, especially the FGM type, to be very perspective for tribological application. cupola character, in case of W based coating prevails the cauliflower appearance. keywords: adhesion; coatings; hardness cache: ap-3088.pdf plain text: ap-3088.txt item: #755 of 1656 id: ap-310 author: Rieger, F. title: Pumping Efficiency of Screw Agitators in a Tube date: 2002 words: 1396 flesch: 60 summary: [J kg�1] e* dimensionless specific energy, e* � e/�n e *max maximum dimensionless specific energy e+ dimensionless specific energy, e+ � e /n2d2 emax � maximum dimensionless specific energy L length The effect of Reynolds number on pumping characteristics was shown in [1]. keywords: number; pumping cache: ap-310.pdf plain text: ap-310.txt item: #756 of 1656 id: ap-3105 author: Košťáková, Petra; Stovicek, Pavel title: THE AHARONOV-BOHM HAMILTONIAN WITH TWO VORTICES REVISITED date: 2016 words: 7372 flesch: 78 summary: Verification of the propagator formula We have to show that, for x0 ∈ M̃ fixed, the propagator K(t, x, x0) defined in (9), (10) verifies the condition( i ∂ ∂t + ∆ ) Fix a point x ∈ M̃ . keywords: operator; propagator; space cache: ap-3105.pdf plain text: ap-3105.txt item: #757 of 1656 id: ap-312 author: Kavan, M. title: Education for Production and Operations Management date: 2002 words: 3485 flesch: 44 summary: Keywords: production and operations management, study programme, department of mechanical engineering enterprise management, Czech business and industry,Czech Technical University in Prague, education, lean operations management, Toyota production system. This programme brings together theory and prac- tice in a broad overview of operations management (OM), dealing with the production process, interactions with other business functions, and also business strategy. keywords: czech; department; management; operations; production; programme; students; work cache: ap-312.pdf plain text: ap-312.txt item: #758 of 1656 id: ap-314 author: Coiro, D. P.; Nicolosi, F. title: Design of a Three Surfaces R/C Aircraft Model date: 2002 words: 5599 flesch: 59 summary: AP2002_01.vp 1 Introduction In the last twenty years canard configurations have be- come more and more usual, especially for light and very light aircraft. After the Wrights’ first flying machines, the revival of canard configuration on classical “backward-built” airplanes has been pushed by experimental aircraft and by the evolu- tion of the numerical and experimental tools necessary to accomplish the design of this type of configuration. keywords: aircraft; canard; configuration; engine; fig; power; propeller; wing cache: ap-314.pdf plain text: ap-314.txt item: #759 of 1656 id: ap-3143 author: Plankovskyy, Sergiy; Shypul, Olga; Tsegelnyk, Yevgen; Tryfonov, Oleg; Golovin, Ivan title: SIMULATION OF SURFACE HEATING FOR ARBITRARY SHAPE’S MOVING BODIES/SOURCES BY USING R-FUNCTIONS date: 2016 words: 3721 flesch: 61 summary: Keywords: numerical methods; moving heat sources; ray tracing; R-functions method. The problem of heating bodies of finite dimensions by moving heat sources is considered in fewer studies. keywords: body; functions; heat; method; problem; source; surface; temperature cache: ap-3143.pdf plain text: ap-3143.txt item: #760 of 1656 id: ap-316 author: Barták, J.; Hilar, M.; Pruška, J. title: Numerical Modelling of Overburden Deformations date: 2002 words: 4523 flesch: 52 summary: � After comparing of in situ measured deformation values with calculated deformations on the basic model, the ef- fect of parametric changes on the final deformations was investigated. For the computa- tional models, the following input data were considered: � backfill: E � 20 MPa; � � 0.3; � � 23 kN/m3; � � 20°; keywords: deformations; grouting; model; modelling; monastery; settlement; tunnel; � � cache: ap-316.pdf plain text: ap-316.txt item: #761 of 1656 id: ap-3162 author: Pazderka, Jiří; Hájková, Eva title: CRYSTALLINE ADMIXTURES AND THEIR EFFECT ON SELECTED PROPERTIES OF CONCRETE date: 2016 words: 3102 flesch: 51 summary: Keywords: crystalline admixture; concrete; building envelope; water tightness; permeability. The results of these tests are very convincing, thus the water impermeability and high durability of concrete with crystalline admixtures may be declared. keywords: admixture; concrete; crystalline; effect; strength; test; water cache: ap-3162.pdf plain text: ap-3162.txt item: #762 of 1656 id: ap-318 author: Rao, N.; Kusumo, R.; Sinha, A. K.; Scott, M. L. title: System Framework for the Design of an Avionics Architecture with Upgrade Potential date: 2002 words: 1996 flesch: 37 summary: The complexity of avionics upgrade process is due to the design rigidity of avionics systems architecture. Keywords: avionics systems, avionics upgrade, system approach, avionics architecture. keywords: architecture; avionics; design; parameters; potential; system; upgrade cache: ap-318.pdf plain text: ap-318.txt item: #763 of 1656 id: ap-320 author: Cooper, G.; Thompson, G. title: Concept Design and Reliability date: 2002 words: 6536 flesch: 54 summary: Thus concept design becomes a set of divergent-convergent design activities that develop an immature concept to maturity by strengthening the concept in response to the salient design requirements. Existing reliability evaluation methods are reviewed with respect to their suitability for use in concept design. keywords: analysis; concept; design; fig; performance; process; reliability; safety; specification; system; tools; � � cache: ap-320.pdf plain text: ap-320.txt item: #764 of 1656 id: ap-322 author: Jokl, M. V. title: The Impact of Odors date: 2002 words: 4872 flesch: 59 summary: Indoors, flowers and man-made aromas (cosmetics and detergents, smoke from an open fireplace) are sources of pleasant smells. Odoriferous substances have to come into con- tact with a mucous membrane, if smell perception is to be evoked. keywords: air; building; co2; concentration; odor; person; smell; subjects; term; tvoc; vol cache: ap-322.pdf plain text: ap-322.txt item: #765 of 1656 id: ap-3227 author: Dvořáček, Filip title: LABORATORY TESTING OF THE LEICA AT401 LASER TRACKER date: 2016 words: 6055 flesch: 61 summary: Keywords: laser tracker; Leica AT401; laboratory testing; firmware error; length metrology. It is expected that all findings presented here for Leica AT401 are also valid for the AT402 model. keywords: at401; distance; instrument; laboratory; laser; leica; measurements; refractive; temperature; tests; tracker cache: ap-3227.pdf plain text: ap-3227.txt item: #766 of 1656 id: ap-324 author: Jokl, M. V. title: Optimization of the Odor Microclimate date: 2002 words: 3049 flesch: 63 summary: Emission rates declined slowly Table 1: TVOC Emission rates in a building interior sults must be proved by calculations of air rates related to one person. The following equation should be used in the rooms where odor agents, released from building materials, are deci- sive for outdoor air rate: � � R G B B iTVOC eTVOC � �36. keywords: air; building; czech; fig; odor; person; rate; value; vol cache: ap-324.pdf plain text: ap-324.txt item: #767 of 1656 id: ap-3258 author: Skopec, Pavel; Hrdlička, Jan title: SPECIFIC FEATURES OF THE OXYFUEL COMBUSTION CONDITIONS IN A BUBBLING FLUIDIZED BED date: 2016 words: 4572 flesch: 60 summary: The maximum CO2 concentration in the flue gas during air combustion is not higher than 20%, but oxyfuel combustion can increase this concentration up to 90% in the dry state. Flue gases from oxyfuel combustion consist mainly of CO2 and water vapour (Fig. 2). keywords: air; combustion; flue; gas; oxyfuel; v o; volume cache: ap-3258.pdf plain text: ap-3258.txt item: #768 of 1656 id: ap-326 author: Usama, S.; Šimák, B. title: A Low-complexity Wavelet Based Algorithm for Inter-frame Image Prediction date: 2002 words: 2851 flesch: 62 summary: The results show that MRVBS is usually better than the FS and TSS algorithms, especially with slow motion video sequences. Zhang and Zafar [8] applied wavelet theory to real-time video com- pression, and proposed multi-resolution motion estimation (MRME). keywords: algorithm; motion; mrvbs; noise; tss cache: ap-326.pdf plain text: ap-326.txt item: #769 of 1656 id: ap-3260 author: Opatřil, Jan; Havlík, Jan; Bartoš, Ondřej; Dlouhý, Tomáš title: AN EXPERIMENTAL ASSESSMENT OF THE PLATE HEAT EXCHANGER CHARACTERISTICS BY WILSON PLOT METHOD date: 2016 words: 4447 flesch: 63 summary: Keywords: plate heat exchanger; Wilson plot; experimental measurement; heat transfer; pressure drop; friction factor. U overall heat transfer coefficient [W/m2 K] v velocity [m/s] Subscripts A fluid A B fluid B in inlet l liquid out outlet w wall Superscripts m exponent of Prandtl number n exponent of Reynolds number ∗ normalized value Acknowledgements The authors gratefully acknowledge the support of all colleagues from G.A.M. HEAT spol. keywords: coefficient; exchanger; flow; heat; heat transfer; method; phe; pressure; transfer cache: ap-3260.pdf plain text: ap-3260.txt item: #770 of 1656 id: ap-3265 author: Kalnins, Ernest G.; Miller, Jr, Willard; Subag, Eyal title: LAPLACE EQUATIONS, CONFORMAL SUPERINTEGRABILITY AND BÔCHER CONTRACTIONS date: 2016 words: 7618 flesch: 63 summary: Atomic Nuclei, 70, 560-566, (2007), doi:10.1088/0305-4470/34/22/311 [15] Kalnins E. G. and Miller W. Jr., Quadratic algebra contractions and 2nd order superintegrable systems, Anal. Summary of Bôcher contractions of Laplace superintegrable systems Table 1 contains a partial list of contractions. keywords: algebra; bôcher; conformal; contractions; laplace; order; systems cache: ap-3265.pdf plain text: ap-3265.txt item: #771 of 1656 id: ap-3266 author: Pospíšil, Jiří; Lisý, Martin; Špiláček, Michal title: OPTIMALIZATION OF AFTERBURNER CHANNEL IN BIOMASS BOILER USING CFD ANALYSIS date: 2016 words: 3821 flesch: 53 summary: Kinetic energy of turbulence generally increases with increasing velocity of flue gas flow. Left of each subfigure: highest concentrations – section plan view; right: concentration in the cut – view in the direction of flue gas flow. keywords: combustion; concentration; duct; flue gas; gas; section; trace gas cache: ap-3266.pdf plain text: ap-3266.txt item: #772 of 1656 id: ap-3274 author: Gernay, Thomas title: A METHOD FOR MEASURING THE SENSITIVITY OF BUILDING STRUCTURAL MEMBERS TO FIRE DECAY PHASES date: 2016 words: 5602 flesch: 60 summary: This work presents an analysis of the behaviour of different structural members under natural fires, and develops a method for characterizing their sensitivity to fire decay phases. Thermo-mechanical numerical simulations based on the non-linear finite element method are conducted using the parametric fire model of the Eurocode to represent natural fires. keywords: column; dhp; figure; fire; load; member; temperature cache: ap-3274.pdf plain text: ap-3274.txt item: #773 of 1656 id: ap-328 author: Haghi, A. K. title: A Mathematical Approach for Evaluation of Surface Topography Parameters date: 2002 words: 3079 flesch: 62 summary: Thus, having � �S x y, � from equation (8), C1 $ � Cn $ 0 n � %2 3, , (10) The correlation function of the transformation G{h(x, y)} from equation (6) is reported approximately as � � � �KG � � � � � �� 1 2 1 2, ,$ . (11) By using � �S x y, # � from equation (8) we obtain C1 0$ � �C These can be mathematically described by the composition of the deterministic and random components of irregularities in the given Cartesian coordinate system: � � � � � �h x y S x y x y, , ,� � � (1) where S(x, y) is the deterministic function of the surface (x, y) coordinates and �(x, y) is the homogeneous random normal field. keywords: d �; y �; � e; � h; � � cache: ap-328.pdf plain text: ap-328.txt item: #774 of 1656 id: ap-330 author: Tesař, V. title: Sampling by Fluidics and Microfluidics date: 2002 words: 6098 flesch: 62 summary: A similar tree- -like connection principle at higher levels is applied to build sampling units for a larger number of sample flows. This would, of course, also apply if there were more valve pairs in a sampling unit handling a larger number of sample flows. keywords: control; fig; flow; jet; pressure; sample; sampling; state; unit; valve cache: ap-330.pdf plain text: ap-330.txt item: #775 of 1656 id: ap-332 author: Rieger, F.; Rzyski, E. title: Mixing Suspensions in Slender Tanks date: 2002 words: 3178 flesch: 64 summary: 3: Effect of increasing the number of impellers (particles � � 1.34 mm, tank H � D): a – values of rotational frequency of impellers; b – values of mixing power (A – one impeller; B – two impellers, = 0.5 d; C – two impellers, = d) (Figs. 4a and 4b). In the tank there were four standard baffles and a pitched four-blade impeller (� � 45°). keywords: fig; impellers; � � cache: ap-332.pdf plain text: ap-332.txt item: #776 of 1656 id: ap-334 author: Grünwald, A.; Šťastný, B.; Slavíčková, K.; Slavíček, M. title: Formation of Haloforms during Chlorination of Natural Waters date: 2002 words: 2208 flesch: 61 summary: Sampling place 1 2 3 4 5 1 DOC (mg �l�1) 15.9 6.55 8.15 9.33 9.53 CODMn (mg �l�1) 22.7 8.00 10.70 11.00 10.7 A254 (cm�1) 0.685 0.25 0.327 0.385 0.376 2 DOC (mg �l�1) 6.55 3.51 6.00 7.20 10.91 CODMn (mg �l�1) 14.40 8.00 4.60 9.30 7.00 A254 (cm�1) 0.483 0.278 0.131 0.327 0.245 3 DOC (mg �l�1) 10.69 6.29 10.23 16.55 5.73 CODMn (mg �l�1) 14.00 10.00 15.50 22.00 8.90 A254 (cm�1) 0.445 0.263 0.446 0.748 0.231 4 DOC (mg �l�1) 4.62 6.79 2.07 3.92 4.55 CODMn (mg �l�1) 5.60 8.60 1.90 4.20 4.70 A254 (cm�1) 0.185 0.269 0.061 0.140 0.146 Tab. 4: Content of organic compounds in water samples from the Flaje catchment Formation and its relation to specific ultraviolet absorbance. Among all the different parameters for characterizing NOM of given water, UV254 and specific ultraviolet absorbance (SUVA� � UV�/DOC) at a particular wavelength (�) has often correlated well with DBP formation keywords: disinfection; formation; nom; water cache: ap-334.pdf plain text: ap-334.txt item: #777 of 1656 id: ap-336 author: Kreidl, M.; Houfek, P. title: Reducing Ultrasonic Signal Noise by Algorithms based on Wavelet Thresholding date: 2002 words: 3104 flesch: 60 summary: 60 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 42 No. 2/2002 Reducing Ultrasonic Signal Noise by Algorithms based on Wavelet Thresholding M. Kreidl, P. Houfek Traditional techniques for reducing ultrasonic signal noise are based on the optimum frequency of an acoustic wave, ultrasonic probe construction and low-noise electronic circuits. The coefficient of noise reduction �SN was defined for a comparison of the success of the used algorithms, according to Eq. keywords: detail; noise; reduction; signal; � � cache: ap-336.pdf plain text: ap-336.txt item: #778 of 1656 id: ap-338 author: Beran, V. title: Optimisation and Just-in-Time date: 2002 words: 3362 flesch: 60 summary: If the matrix of variables in time t, where t � (1, 2, 3, …, T) is signed for particular scenarios s, where s � (1, 2, …, S), say as zts, the problem becomes � � � �min ,F p x w zj jt x � ���� � � � t jt s ts 1 (4) subject to c x z Dj jt jt ts ts� ��� t s, , (5) � �x jt 0 1 2, , , � j t, , (6) zts � 0 t s, , (7) where w is the weighting factor and � is the function of nega- tive demand consequences related to the unmet demand zjt and probability �s in the range of scenario s. Demand Dts will be presented with an uncertainty com- ponent zjt, see Eq. (5). Finishing processes in construction production are an appropriate place for practic- ing JIT methods. keywords: activities; construction; fig; production; time; total; � � cache: ap-338.pdf plain text: ap-338.txt item: #779 of 1656 id: ap-340 author: Bednařík, M.; Koníček, P.; Červenka, M. title: Solution of the Burgers Equation in the Time Domain date: 2002 words: 3665 flesch: 68 summary: (8) The integration itself can be performed by means of the Simpson method, which is based on approximating the inte- grated function in the segments by parts of a parabola � � � � � � � �f z z q q n f z f z f z q q d 1 2 2 1 0 1 23 4 2 � � � � � �� [ � � � � � � �� � �� �2 42 1f z f z f zn n n ], (9) where n � 2k, k N� is the number of equidistant intervals and � �z q i q q ni � � �1 2 1 . (5) only in intervals � � � �q qi i 1 2, where the value of an integrand is less than a cho- sen parameter � . keywords: f z; g0 �; y �; z z; z �; � exp; � f; � � cache: ap-340.pdf plain text: ap-340.txt item: #780 of 1656 id: ap-3408 author: Mouralova, Katerina; Kovar, Jiri; Houska, Pavel title: EXPERIMENTAL EVALUATION OF WEDM MACHINED SURFACE WAVINESS date: 2016 words: 3442 flesch: 62 summary: 4. Conclusions and discussion The morphology of sample surfaces is made up of a large number of craters which were formed by ero- sion process ZHR 4150AK hardness tester, series Rockwell by Zwick Roell was used for the measurement of hardness of sample material. keywords: alloy; machining; parameters; samples; surface; titanium; values; waviness; wedm cache: ap-3408.pdf plain text: ap-3408.txt item: #781 of 1656 id: ap-3411 author: Gubbiotti, Giorgio; Levi, Decio; Scimiterna, Christian title: ON PARTIAL DIFFERENTIAL AND DIFFERENCE EQUATIONS WITH SYMMETRIES DEPENDING ON ARBITRARY FUNCTIONS date: 2016 words: 5522 flesch: 60 summary: Startsev, Darboux integrable discrete equations possessing an autonomous first-order integral, J. Phys. [5], i.e., equations integrable by the Spectral transform, which have an infinite dimensional group of point symmetries. keywords: darboux; equation; functions; math; order; point; symmetries; symmetry cache: ap-3411.pdf plain text: ap-3411.txt item: #782 of 1656 id: ap-342 author: Jahoda, M.; Machoň, V.; Vlach, L.; Fořt, I. title: Macro-instabilities of a Suspension in an Axially Agitated Mixing Tank date: 2002 words: 3467 flesch: 62 summary: The dependence of the mean value of the dimensionless frequency of macro-instability occurrence on impeller speed for constant solid concentration 10 % by weight is shown in Fig. The dependence of the mean value of the dimensionless frequency of macro-instability occurrence on solid concentration for constant impeller speed is shown in Fig. keywords: frequency; impeller; macro; occurrence; vessel cache: ap-342.pdf plain text: ap-342.txt item: #783 of 1656 id: ap-3436 author: Vaněček, Jan; Štroner, Martin title: TESTING THE ACCURACY OF MEASURED VALUES IN CONTINUOUS LONG-TERM GEODETIC MONITORING date: 2016 words: 6368 flesch: 59 summary: Important coefficients of approximation curves of horizontal direction standard deviations. Standard deviation of horizontal direction for all tested reference points. keywords: accuracy; analysis; angle; approximation; deviation; direction; distance; monitoring; reference; slope; values cache: ap-3436.pdf plain text: ap-3436.txt item: #784 of 1656 id: ap-3438 author: Prorok, Amanda; Ani Hsieh, M.; Kumar, Vijay title: ADAPTIVE DISTRIBUTION OF A SWARM OF HETEROGENEOUS ROBOTS date: 2016 words: 6520 flesch: 63 summary: As a consequence, we do not employ optimization methods that utilize final robot distributions in their formula- tions (which is the case in the works presented by [8] and [13]). We consider a community of S robot species, with a total number of robots N , and N (s) robots per species such that ∑S s=1N (s) = N . keywords: distribution; k(s; optimization; robot; species; system; time; trait; transition cache: ap-3438.pdf plain text: ap-3438.txt item: #785 of 1656 id: ap-344 author: Teplý, B. title: Modelling of Deterioration Effects on Concrete Structures date: 2002 words: 3960 flesch: 57 summary: The failure probability is defined as: � �� �p P g tf � �X, 0 (16) and can be evaluated at several time points ti (i � 1, 2, …, n). The formula for the time related rebar diameter decrease reads � � � � � �d keywords: carbonation; cl �; concrete; corrosion; service; � � cache: ap-344.pdf plain text: ap-344.txt item: #786 of 1656 id: ap-3440 author: Mendes Filho, José M.; Lucet, Eric title: MULTI-ROBOT MOTION PLANNING: A MODIFIED RECEDING HORIZON APPROACH FOR REACHING GOAL STATES date: 2016 words: 5665 flesch: 56 summary: This paper proposes the real-time implementation of an algorithm for collision-free motion planning based on a receding horizon approach, for the navigation of a team of mobile robots in the presence of obstacles of different shapes. Introduction The control of mobile robots is a long-standing subject of research in the robotics domain. keywords: goal; horizon; motion; planning; problem; robot; time cache: ap-3440.pdf plain text: ap-3440.txt item: #787 of 1656 id: ap-3441 author: Genter, Katie; Stone, Peter title: AD HOC TEAMWORK BEHAVIORS FOR INFLUENCING A FLOCK date: 2016 words: 6654 flesch: 53 summary: Instead, we pair influencing agents that share some neighbors. Additionally, even when a pair of influencing agents shared one or more neighbors, these influencing agents often behaved similarly, and hence did not exert significantly different types of influence. keywords: agent; algorithm; behavior; flock; lookahead; neighbors; orientation; step; time cache: ap-3441.pdf plain text: ap-3441.txt item: #788 of 1656 id: ap-3444 author: Čarnogurská, Mária; Dobáková, Romana; Příhoda, Miroslav title: APPLICATION OF DIMENSIONAL ANALYSIS IN HEAT LOSS DETERMINING IN DISTRICT HEATING SYSTEMS date: 2016 words: 3998 flesch: 57 summary: Dimensional analysis enables a new point of view that demonstrated the functionality of heat loss from selected physical quantities that contribute to heat loss. Transforming these criteria of similarity leads to the formulation of the functional dependence of only two criteria, on the basis of which the amount of heat loss can be determined. keywords: flow; heat; heat loss; loss; temperature; water cache: ap-3444.pdf plain text: ap-3444.txt item: #789 of 1656 id: ap-3447 author: Haider, Usman; Bittnar, Zdenek; Kopecky, Lubomír; Šmilauer, Vít; Pokorny, Jaroslav; Zaleska, Martina; Prošek, Zdenek; Hrbek, Vladimír title: DETERMINING THE ROLE OF INDIVIDUAL FLY ASH PARTICLES IN INFLUENCING THE VARIATION IN THE OVERALL PHYSICAL, MORPHOLOGICAL, AND CHEMICAL PROPERTIES OF FLY ASH date: 2016 words: 11805 flesch: 68 summary: The chemical composition of fly ashes is usually measured with the help of XRF analyses which give the average values of chemical composition and es- timate that coal fly ash typically contains a high percentage of elements such as Si, Al, Ca, and Fe in it and relatively low percentages of heavy metals such as Cu, Zn, Pb, Hg with some rare earth ele- ments Phase-chemical and chemical composition of coal fly ashes as a basis for their multicomponent utilization. keywords: analyses; chemical; coal; dětmarovice; edx; elements; fig; fly; fly ashes; images; ledvice; mělník; particles; percentages; počerady; present; properties cache: ap-3447.pdf plain text: ap-3447.txt item: #790 of 1656 id: ap-3448 author: Goremikins, Vadims; Blesak, Lukas; Novak, Josef; Wald, Frantisek title: EXPERIMENTAL METHOD ON INVESTIGATION OF FIBRE REINFORCED CONCRETE AT ELEVATED TEMPERATURES date: 2016 words: 4540 flesch: 53 summary: Currently, a lack of information considering tensile and post cracking behaviour of FRC at elevated temperatures is an issue to be faced. Keywords: temperature distribution; elevated temperature; four-point bending test; compressive and tensile tests. keywords: concrete; fig; heating; specimens; steel; temperature; test; testing cache: ap-3448.pdf plain text: ap-3448.txt item: #791 of 1656 id: ap-3453 author: Kawohl, Anne Katherine; Lange, Jörg title: TESTS ON 10.9 BOLTS UNDER COMBINED TENSION AND SHEAR date: 2016 words: 3822 flesch: 68 summary: The above-mentioned reduction factors for bolt strength at elevated temperatures are based on an extensive series of tests by Kirby [4] on bolts of property class 8.8. There was less strength loss with pure shear tests. keywords: bolts; fire; shear; tests cache: ap-3453.pdf plain text: ap-3453.txt item: #792 of 1656 id: ap-3454 author: Lišková, Anna; Lacková, Petra; Mihaliková, Mária; Kočiško, Róbert title: IMPACT OF PLASTIC DEFORMATION ON THE PROPERTIES OF A SELECTED ALUMINIUM ALLOY date: 2016 words: 3785 flesch: 57 summary: They are generally present in Al alloys aged to maxi- mum hardness; β′ are rod-shaped precipitates with a hexagonal structure and are found in overegged speci- mens; β (Mg2Si) is an equilibrium phase in the pre- cipitation sequence. Keywords: intensive plastic deformation; aluminium alloy; tensile test. keywords: alloy; aluminium; deformation; ecap; figure; fracture; plastic; state cache: ap-3454.pdf plain text: ap-3454.txt item: #793 of 1656 id: ap-3455 author: Quan, Guan; Huang, Shan-Shan; Burgess, Ian title: PARAMETRIC STUDIES ON THE COMPONENT-BASED APPROACH TO MODELLING BEAM BOTTOM FLANGE BUCKLING AT ELEVATED TEMPERATURES date: 2016 words: 5821 flesch: 66 summary: The Cardington fire tests [4] indicated that beam- web shear buckling, as well as beam bottom-flange buckling, near to the ends of steel beams, is very prevalent under fire conditions, as shown in Fig. Conclusions This paper has briefly reviewed an analytical model proposed to predict the post-buckling behaviour of the end-zones of steel beams at elevated temperatures. keywords: beam; buckling; deflection; fig; flange; flange buckling; model; shear cache: ap-3455.pdf plain text: ap-3455.txt item: #794 of 1656 id: ap-3457 author: Háková, Lenka; Hrivnák, Jiří; Motlochová, Lenka title: ON CUBATURE RULES ASSOCIATED TO WEYL GROUP ORBIT FUNCTIONS date: 2016 words: 7369 flesch: 73 summary: Weyl group orbit functions The definition of Weyl group orbit function uses the notion of a sign homomorphisms σt : W 7→ ±1, where Figure 1. Keywords: Weyl group orbit functions; Jacobi polynomials; cubature formulas. keywords: cubature; formulas; functions; group; integration; jacobi; orbit; polynomials; roots; weyl cache: ap-3457.pdf plain text: ap-3457.txt item: #795 of 1656 id: ap-346 author: Jokl, M. V. title: The Danger of Toxic Substances date: 2002 words: 6175 flesch: 55 summary: Exhaust fumes from diesel engines produce in addition to NOx and other toxic agents, 3-nitrobenzatrone, which is the most carcinogenic agent discovered so far. 2 Impact of toxic gases on the human organism Toxic strain depends on the kind of toxic agent (noxa) – each one usually has a specific impact on the human body (Fig. 2). keywords: air; building; carbon; concentration; formaldehyde; gases; nitrogen; ozone; smoke; substances cache: ap-346.pdf plain text: ap-346.txt item: #796 of 1656 id: ap-3470 author: Vrána, Tomáš; Bradáč, Josef; Kovanda, Jan title: ELASTO-KINEMATIC COMPUTATIONAL MODEL OF SUSPENSION WITH FLEXIBLE SUPPORTING ELEMENTS date: 2016 words: 5379 flesch: 56 summary: Validation of inertia moments of suspension supporting elements Moments of inertia of supporting elements calculated from geometrical models in Hypermesh have been verified by experimental measurements on so-called torsion hanger [9]. doi:10.1007/978-94-007-5404-1. 155 http://dx.doi.org/10.1007/978-3-658-05068-9 http://dx.doi.org/10.1007/978-3-540-68553-1 http://dx.doi.org/10.1016/S0168-874X(98)00070-5 http://dx.doi.org/10.1007/978-3-540-89315-8 http://dx.doi.org/10.1016/j.mechmachtheory.2005.11.003 http://dx.doi.org/10.1115/1.2826715 http://dx.doi.org/10.1243/095440703322114915 http://www.altairuniversity.com/14225-practical-aspects-of-multi-body-simulation-with-hyperworks-free-book/ http://www.altairuniversity.com/14225-practical-aspects-of-multi-body-simulation-with-hyperworks-free-book/ http://www.altairuniversity.com/14225-practical-aspects-of-multi-body-simulation-with-hyperworks-free-book/ http://dx.doi.org/10.1007/978-94-017-0287-4 http://www.altairhyperworks.com/ClientCenterHWTutorialDownload.aspx http://www.altairhyperworks.com/ClientCenterHWTutorialDownload.aspx http://dx.doi.org/10.1007/978-94-007-5404-1 Acta Polytechnica 56(2):147–155, 2016 1 Introduction 2 MBS model in HyperWorks 3 MBS computational model of independent suspension 3.1 Creation of MBS model 3.2 Flexible models of suspension supporting elements 3.3 Creation of interface nodes 4 Simulations computations 5 Validation of MBS model 5.1 Validation of inertia moments of suspension supporting elements 5.2 Experimental measurement 6 Results and discussion 6.1 Effect of supporting elements flexibility during wheel vertical motion 6.2 Effect of supporting elements flexibility during action of side force 6.3 Effect of supporting elements flexibility during action of longitudinal force 7 Conclusion References keywords: angle; elasto; elements; figure; flexibility; kinematic; mbs; model; subframe; suspension; toe cache: ap-3470.pdf plain text: ap-3470.txt item: #797 of 1656 id: ap-348 author: Kreidl, M.; Houfek, P. title: Using the Correlation Function in Ultrasonic Non-destructive Testing date: 2002 words: 2377 flesch: 65 summary: � � � � � ��R rT N x � ��SN dBef2 ef2 ef1 ef1 � � � � � �20 log U N U N , (5) where Nef1 RMS value of the additive noise in the signal, Nef2 RMS value of noise included in the signal after application in a given algorithm, Uef1 RMS value of the ultrasonic signal, e.g., cor- responding to the flaw echo in the measured signal, Uef2 RMS value of the ultrasonic signal, when applying the tested algorithm. keywords: fig; noise; signal; � � cache: ap-348.pdf plain text: ap-348.txt item: #798 of 1656 id: ap-3483 author: Grundland, Alfred Michel; Levi, Decio; Martina, Luigi title: ON IMMERSION FORMULAS FOR SOLITON SURFACES date: 2016 words: 9303 flesch: 66 summary: The problem of constructing integrable surfaces associated with the CPN−1 models and their deformations under various types of dynam- ics have generated a great deal of interest over the past decades [35] providing a formula for the immersion of integrable surfaces which are extensively used in the literature (see e.g. 190 vol. keywords: formula; function; gauge; immersion; lsp; matrix; soliton; surfaces; symmetries; symmetry; zcc cache: ap-3483.pdf plain text: ap-3483.txt item: #799 of 1656 id: ap-3486 author: Volf, Petr; Kutílek, Patrik; Hozman, Jiří; Černý, Rudolf; Koukolík, Tomáš; Hejda, Jan title: SYSTEM FOR MEASURING KINEMATICS OF VESTIBULAR SYSTEM MOVEMENTS IN NEUROLOGICAL PRACTICE date: 2016 words: 5344 flesch: 44 summary: Keywords: kinematics, vestibular system, head movement, gyroscope, accelerometer. Even though these systems are com- monly used for vestibular system examinations, they are not able to detect its movements directly. keywords: accelerations; gyro; head; labyrinth; left; movement; plate; right; rotation; system cache: ap-3486.pdf plain text: ap-3486.txt item: #800 of 1656 id: ap-3487 author: Sovják, Radoslav; Máca, Petr; Imlauf, Tomáš title: EFFECT OF FIBRE ASPECT RATIO AND FIBRE VOLUME FRACTION ON THE EFFECTIVE FRACTURE ENERGY OF ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE date: 2016 words: 5450 flesch: 62 summary: [15] and Sovják et al. This paper investigates the effective fracture energy of UHPFRC with various fibre volume fractions and various fibre aspect ratios. keywords: aspect; concrete; energy; fibre; fracture; uhpfrc; volume cache: ap-3487.pdf plain text: ap-3487.txt item: #801 of 1656 id: ap-3488 author: Dong, Youwei; Rahmani, Ahmed title: FORMATION CONTROL OF MULTIPLE UNICYCLE-TYPE ROBOTS USING LIE GROUP date: 2016 words: 6260 flesch: 73 summary: Lie algebra application to mobile robot control: a tutorial. [xI , yI ]T position of robot in frame FI gi ∈ SE(2) configuration of local frame attached to robot- i relative to frame FI gij configuration of robot-j relative to the local frame attached to robot-i ḡij desired configuration of robot-j relative to robot-i B = (0, r) the centre of a circle of which the radius is |r| A = [x, y]T position of robot gi in frame O′X keywords: configuration; control; formation; frame; group; lie; robot; unicycle cache: ap-3488.pdf plain text: ap-3488.txt item: #802 of 1656 id: ap-3490 author: Mansouri, Masoumeh; Andreasson, Henrik; Pecora, Federico title: HYBRID REASONING FOR MULTI-ROBOT DRILL PLANNING IN OPEN-PIT MINES date: 2016 words: 8255 flesch: 60 summary: Machine Allocation Sub-problem Each possible solu- tion has complex ramifications on other sub-problems: different allocations will affect the amount of coordi- nation necessary; allocations must be such that the final mission of a machine is not surrounded by piles (drilled by other machines), which would make it im- possible to navigate to its final parking pose. keywords: constraints; decision; drill; figure; machine; mission; motion; planning; problem; robot; sequencing; solver; sub; targets cache: ap-3490.pdf plain text: ap-3490.txt item: #803 of 1656 id: ap-3491 author: Cabová, Kamila; Wald, František title: VERIFICATION AND VALIDATION OF NUMERICAL MODEL OF FIRE AND SMOKE DEVELOPMENT IN RAILWAY TUNNEL date: 2016 words: 5176 flesch: 56 summary: Verification of numerical model of fire and smoke development in railway tunnel. [17] Rhodes, N. CFD modelling of tunnel fires, Chapter 15 in Handbook of Tunnel Fire Safety, 2nd edition, ICE Publishing, London, UK, p. 329-346, doi: 10.1680/htfs.41530.329 [18] Silva, J.C. and Landesmann, A. Performance-based analysis of steel-concrete composite floor exposed to fire, Journal of Constructional Steel Research, Vol. 83, pp. 117-126, doi:10.1016/j.jcsr.2013.01.009 keywords: fds; fire; flow; gas; mesh; model; numerical; results; temperature; tunnel; verification cache: ap-3491.pdf plain text: ap-3491.txt item: #804 of 1656 id: ap-3493 author: De Bie, Hendrik; Genest, Vincent Xavier; Lemay, Jean-Michel; Vinet, Luc title: A SUPERINTEGRABLE MODEL WITH REFLECTIONS ON S^3 AND THE RANK TWO BANNAI-ITO ALGEBRA date: 2016 words: 3847 flesch: 71 summary: , c2n−1 commuting with H, that is [H, ci] = 0 for i = 1, . . . = ( 1 2 + µjRj + µkRk + ( iJjk + µj sk sj Rj − µk sj sk Rk ) k∏ l=j+1 Rl ) RjRk, 1 ≤ j < k ≤ 4, (2.3) can easily be verified to commute with H on the 3-sphere and are thus conserved. keywords: algebra; bannai; ito; model; polynomials cache: ap-3493.pdf plain text: ap-3493.txt item: #805 of 1656 id: ap-350 author: Čepek, A. title: The GNU GaMa Project - Adjustment of Geodetic Networks date: 2002 words: 3128 flesch: 57 summary: Our primary platform is GNU/Linux, and to help our users to use GaMa adjustment we have been run- ning a mail-server and a web interface (WebGaMa) based on the PHP scripting language. 2 About GNU GaMa The GaMa project (the acronym comes from Geodesy and Mapping) provides free software written in C++, released under the terms of the GNU General Public Licence keywords: adjustment; free; gama; gnu; project; software; xml cache: ap-350.pdf plain text: ap-350.txt item: #806 of 1656 id: ap-3502 author: Znojil, Miloslav title: IS PT-SYMMETRIC QUANTUM THEORY FALSE AS A FUNDAMENTAL THEORY? date: 2016 words: 2725 flesch: 57 summary: Rev. Lett. 112, 130404 (2014)) that the “recent extension of quantum theory to non-Hermitian Hamiltonians” (which is widely known under the nickname of “PT -symmetric quantum theory”) is “likely false as a fundamental theory”. By their opinion their results “essentially kill any hope of PT -symmetric quantum theory as a fundamental theory of nature”. keywords: hilbert; phys; quantum; space; theory cache: ap-3502.pdf plain text: ap-3502.txt item: #807 of 1656 id: ap-3503 author: Šácha, Jan; Sněhota, Michal; Hovind, Jan title: A QUANTITATIVE EVALUATION OF THE WATER DISTRIBUTION IN A SOIL SAMPLE USING NEUTRON IMAGING date: 2016 words: 4817 flesch: 46 summary: Studies [13, 14] have noted the difference between the NI-derived water content and the results of gravimetric measurements of water content. In situ neutron radiography of lithium-ion batteries: the gas evolution on graphite electrodes during the charging, Journal of Power Sources, 130(1-2), 221-226, doi:10.1016/j.jpowsour.2003.11.065 393 http://dx.doi.org/10.1016/j.nima.2012.12.112 http://dx.doi.org/10.1016/j.phpro.2013.03.002 http://dx.doi.org/10.1111/j.1475-4754.2006.00244.x http://dx.doi.org/10.1016/j.jpowsour.2003.11.065 Jan Šácha, Michal Sněhota, Jan Hovind Acta Polytechnica [7] Prazak, J., J. Tywoniak, F. Peterka, and T. Slonc (1990), Description of transport of liquid in porous-media - a study based on neutron radiography data, International Journal of Heat and Mass Transfer, 33(6), 1105-1120, doi:10.1016/0017-9310(90)90244-O [8] Moradi, A. B., A. Carminati, D. Vetterlein, P. Vontobel, E. Lehmann, U. Weller, J. W. Hopmans, H. J. Vogel, and S. E. Oswald (2011), Three-dimensional visualization and quantification of water content in the rhizosphere, New Phytologist, 192(3), 653-663, doi:10.1111/j.1469-8137.2011.03826.x [9] Beer (1852) Bestimmung der Absorption des rothen Lichts in farbigen Flüssigkeiten (Determination of the absorption of red light in colored liquids), Annalen der Physik und Chemie, vol. 86, pp. keywords: beam; content; correction; image; imaging; method; neutron; sample; thickness; water; water content cache: ap-3503.pdf plain text: ap-3503.txt item: #808 of 1656 id: ap-3506 author: Gazeau, Jean-Pierre title: COVARIANT INTEGRAL QUANTIZATIONS AND THEIR APPLICATIONS TO QUANTUM COSMOLOGY date: 2016 words: 4859 flesch: 58 summary: Keywords: integral quantization; covariance; POVM; affine group; Weyl-Heisenberg group; coherent states; FRW model; smooth bouncing. Integral quantization: general setting and POVM Let (X, ν) be a measure space. keywords: affine; gazeau; group; j.-p; operator; quantization; quantum; space; weyl cache: ap-3506.pdf plain text: ap-3506.txt item: #809 of 1656 id: ap-3509 author: Szajewska, Marzena; Tereszkiewicz, Agnieszka title: TWO-DIMENSIONAL HYBRIDS WITH MIXED BOUNDARY VALUE PROBLEMS date: 2016 words: 4203 flesch: 77 summary: C2 case From the projection matrix PC2 (1) and the branching rule (2) we find two separation constants −k2 1 and −k2 2, which have a form −k2 1 = −2(a+ b)2π2, w2 − k2 1 = 2b2π2, −k2 2 = −2b2π2, w2 − k2 2 Noting that k2 1 = w2 − k2 2, as a separation constant we take −k2 = −2(a+ b)2π2, w2 − k2 = 2b2π2. keywords: b(x; boundary; functions cache: ap-3509.pdf plain text: ap-3509.txt item: #810 of 1656 id: ap-3511 author: Háková, Lenka; Tereszkiewicz, Agnieszka title: ON GENERALIZATION OF SPECIAL FUNCTIONS RELATED TO WEYL GROUPS date: 2016 words: 4648 flesch: 73 summary: Weyl group orbit functions are defined in the context of Weyl groups of simple Lie algebras. Weyl group orbit functions The standard way of defining four families of orbit functions uses the concept of sign homomorphisms, i.e., mappings σ : W → {±1}. keywords: characters; functions; groups; weyl; −1 −1 cache: ap-3511.pdf plain text: ap-3511.txt item: #811 of 1656 id: ap-3517 author: Hrivnak, Jiri; Motlochova, Lenka title: ON CONNECTING WEYL-ORBIT FUNCTIONS TO JACOBI POLYNOMIALS AND MULTIVARIATE (ANTI)SYMMETRIC TRIGONOMETRIC FUNCTIONS date: 2016 words: 5431 flesch: 68 summary: [6] L. Háková, J. Hrivnák, J. Patera, Four families of Weyl group orbit functions of B3 and C3, J. Math. Formulas for connection between the four types of orbit functions of Bn or Cn and the (anti)symmetric multivariate cosine and sine functions are explicitly derived. keywords: cos; functions; lie; orbit; polynomials; sin; weyl cache: ap-3517.pdf plain text: ap-3517.txt item: #812 of 1656 id: ap-3518 author: Wen, Wei; Khatibi, Siamak title: BACK TO BASICS: TOWARDS NOVEL COMPUTATION AND ARRANGEMENT OF SPATIAL SENSORY IN IMAGES date: 2016 words: 5088 flesch: 61 summary: We believe that the orbit domain image processing has a great potential to be the standard processing for hexagonal images. The similarity of the grid in the funda- mental domain of a certain orbit function from Weyl group to the grid of hexagonal images makes the orbit functions interesting for the hexagonal computation in which it becomes possible to process hexagonal images without any further transformation. keywords: computation; domain; figure; grid; images; intensity; method; orbit; pixel; processing; sensor; square cache: ap-3518.pdf plain text: ap-3518.txt item: #813 of 1656 id: ap-352 author: Novák, M.; Faber, J.; Votruba, Z.; Přenosil, V.; Tichý, T.; Svoboda, P.; Tatarinov, V. title: Reliability of Human Subject - Artificial System Interactions date: 2002 words: 7188 flesch: 50 summary: However, as concerns the reliability of interactions between human subjects and artificial systems, only the last approach seems truly able to minimize the frequency of system operation failures caused by human error and failure © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 31 Acta Polytechnica Vol. 42 No. 3/2002 Reliability of Human Subject – Artificial System Interactions M. Novák, J. Faber , Z. Votruba, V. Přenosil, T. Tichý, P. Svoboda, V. Tatarinov Main problems related to reliability of interaction between human subject and artificial system (namely of the transportation character) are discussed. All these factors combine, with the result that the reliability of human subject – artificial system interaction is limited, above all from the human side. keywords: attention; interaction; micro; operator; reliability; sleep; subject; system; time; vol; � � cache: ap-352.pdf plain text: ap-352.txt item: #814 of 1656 id: ap-3521 author: Med, Michal; Souček, Petr title: ANALYSIS AND IMPLEMENTATION OF APPLICATION SCHEMAS FOR THE INSPIRE BUILDINGS THEME date: 2016 words: 6458 flesch: 53 summary: Publication of INSPIRE data The whole implementation process will escalate with the publication of data according to Commission Reg- ulations No. 976/2009 of 19th October 2009 and No. 1311/2014 of 10th December 2014, amending Regulation No. 976/2009. Services Two kinds of services are required for the publica- tion of INSPIRE data – Download Services and View Services. keywords: application; buildings; data; feature; implementation; information; inspire; metadata; schemas; services; theme; xml cache: ap-3521.pdf plain text: ap-3521.txt item: #815 of 1656 id: ap-3524 author: Levi, Decio; Rodriguez, Miguel A. title: ON THE CONSTRUCTION OF PARTIAL DIFFERENCE SCHEMES II: DISCRETE VARIABLES AND SCHWARZIAN LATTICES date: 2016 words: 5918 flesch: 60 summary: − hym(un+1,m − un,m)− σyn(un,m+1 − un,m) hxnh y m − σxmσ y n ) − σyn (hym+1(un+1,m+1 − un,m+1)− σyn(un,m+2 − un,m+1) hxnh y m+1 − σxm+1σ y n − hym(un+1,m − un,m)− σyn(un,m+1 − un,m) hxnh y m − σxmσ y n )]( hxnh y m − σxmσyn )−1 − (hym(un+1,m − un,m)− σyn(un,m+1 − un,m))2 (hxnh y m − σxmσ y n)2 = 0. (27) 240 vol. Let us construct using the formulas introduced in the previous section the discrete scheme which preserves the point symmetries of the potential Burgers equation uy − uxx − u2 x = 0. (19) keywords: difference; equation; hyn; invariant; lattice cache: ap-3524.pdf plain text: ap-3524.txt item: #816 of 1656 id: ap-3526 author: Vogel, Filip; Holčapek, Ondřej; Konvalinka, Petr title: RESPONSE OF HIGH-PERFORMANCE FIBRE REINFORCED CONCRETE REINFORCED BY TEXTILE REINFORCEMENT TO IMPACT LOADING date: 2016 words: 5601 flesch: 67 summary: The HPFRC samples were absorbed in average 64.03 % of impact energy, which is almost two times higher value than in the case of TRHPFRC samples. The HPFRC samples absorbed in average 64.03% of impact energy, which is almost two times higher value, than in the case of TRHPFRC samples. keywords: deflection; energy; hpfrc; impact; reinforcement; samples; textile; trhpfrc cache: ap-3526.pdf plain text: ap-3526.txt item: #817 of 1656 id: ap-3537 author: Likhonina, Raissa title: FINITE ELEMENT MODELLING AND SIMULATION OF VEHICLE IMPACT ON STEEL SAFETY BARRIERS date: 2016 words: 4350 flesch: 60 summary: And the authors of such publications have come to a similar conclusion that FEA simulation is a very helpful tool for design and construction as well as for testing of crash barriers. Moreover, the calculation results can be used to design and test new and completely innovative types of crash barriers. keywords: barriers; crash; impact; jsam-2; jsnh4; safety; simulation; tests; vehicle cache: ap-3537.pdf plain text: ap-3537.txt item: #818 of 1656 id: ap-354 author: Šulc, B.; Jan, J. A. title: Non Linear Modelling and Control of Hydraulic Actuators date: 2002 words: 3893 flesch: 66 summary: Fuzzy controllers have the disadvantage that it is difficult to tune the large number of parameters, in contrast to the proportional derivative (PD) controller, which can be expres- sed by the equation: u K e K ePD P D� � � (11) where uPD is the control signal, e the control error, and the constants KP, KD represent proportional and derivate constants. We used the logical operator OR with max function as given below: �y x x� �max , ,1 2 In our case we had one output and five rules. keywords: control; fig; oil; � � cache: ap-354.pdf plain text: ap-354.txt item: #819 of 1656 id: ap-3555 author: Senk, Josef; Jakubova, Ivana; Laznickova, Ilona title: ANALYSIS OF INTENSIVELY BLASTED ELECTRIC ARC BURNING IN THE ARC HEATER'S ANODE CHANNEL date: 2016 words: 4245 flesch: 61 summary: (6) Solving the equation system in the mash step by step gives axial dependences of arc temperature TA(z), electric field intensity E(z), Mach number Ma(z), power loss Pl(z), voltage UA(z) and finally, at the end, the total arc voltage UA(zL) and Pl(zL) as sums of individual increments. As could be expected, for higher arc currents, the conditions for the arc burning are built in a closer vicinity of the cathode and the arc temperature is higher. keywords: anode; arc; cathode; channel; flow; power; voltage cache: ap-3555.pdf plain text: ap-3555.txt item: #820 of 1656 id: ap-3559 author: Topič, Jaroslav; Prošek, Zdenek title: PROPERTIES AND MICROSTRUCTURE OF CEMENT PASTE INCLUDING RECYCLED CONCRETE POWDER date: 2017 words: 5225 flesch: 55 summary: The resulting sample shrinkage was related to the length of 1 m and was only preliminary measurement carried out to verify the influence of increasing w/c ratios for RCP samples. A decrease of dynamic Young’s and shear moduli for RCP samples was primarily caused by the lower density of old cement paste in the RCP and also impacted by higher water content. keywords: cement; concrete; grains; materials; paste; properties; rcp; reference; samples; strength cache: ap-3559.pdf plain text: ap-3559.txt item: #821 of 1656 id: ap-356 author: Římal, J. title: Prague Loretto - Measurements of Moisture Content in Sculptural Group Material date: 2002 words: 2310 flesch: 51 summary: Only complete elimi- nation of excessive moisture sources can guarantee the success of any preservation or conservation interventions that will be needed on the sculptural group. Keywords: Prague Loretto, measurement of moisture fields, mass transport. keywords: group; moisture; sandstone cache: ap-356.pdf plain text: ap-356.txt item: #822 of 1656 id: ap-358 author: Římal, J. title: Measurement of Moisture Fields in the Bridge Structure of Charles Bridge date: 2002 words: 2564 flesch: 50 summary: Temperature field measurement was conducted independently throughout a one-year cycle. Temperature field measurements therefore had to be con- ducted parallel to moisture field measurements of the Charles bridge structure. keywords: bridge; charles; concrete; field; measurement; moisture; temperature cache: ap-358.pdf plain text: ap-358.txt item: #823 of 1656 id: ap-360 author: Hasal, P.; Kratěna, J.; Fořt, I. title: Frequency and Magnitude Analysis of the Macro-instability Related Component of the Tangential Force Affecting Radial Baffles in a Stirred Vessel date: 2002 words: 6039 flesch: 56 summary: The N-window extracts N consecutive elements from the series {�i *} to vector {�k *} � � � �k j S * *, , , , , ,� � � � � �� j k k N k N N� �1 1 1 (3) The set of vectors {�k *, k � 1, …, m �(N�1)} resulting from repeated application of the N-window to the centred velocity data is then rearranged to a form of the so called trajectory matrix W � � �W= � � �1 2 N N T S * * *, , ,� � �1 . The frequency of occurrence of macro-instability related force component is also analysed. keywords: blade; force; frequency; impeller; macro; vessel; � � cache: ap-360.pdf plain text: ap-360.txt item: #824 of 1656 id: ap-362 author: Dobrovská, D.; Andres, P. title: Technical Teachers and Technical Teacher Education - Research Results date: 2002 words: 3015 flesch: 49 summary: 6 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 42 No. 4/2002 4 Conclusions � to gain a “further qualification” or a “higher income” are leading motives for technical teachers to study teacher education, while ”interest” in pedagogical study is less common � most technical teachers have no previous experience with non-technical subjects � psychology is the most popular “human science” chosen by technical teachers � most of the respondents agree that technical teacher edu- cation should be obligatory; some have no opinion about the problem � a timetable involving one day weekly is acceptable for most respondents, but they are not in consensus about the desirable length of the programme (ranging from 1 to 4 semesters) � most technical teachers consider that e-learning is not quite suitable for technical teacher education � most also believe that technical university teachers should take some complementary teacher education courses � some subjects studied in technical teacher education are more popular or are felt to be more useful; others are less popular or considered less useful. Answer Frequency yes 60 no 6 no opinion 32 other opinion 9 Fig. 11: Do you think technical teacher education should be ob- ligatory for technical university teachers? keywords: education; respondents; teacher; technical cache: ap-362.pdf plain text: ap-362.txt item: #825 of 1656 id: ap-364 author: Červenka, M.; Bednařík, M.; Koníček, P. title: Temperature Effects in Acoustic Resonators date: 2002 words: 3036 flesch: 58 summary: The one-dimensional form of these equations with terms up to the 2nd order is presented here: Navier- -Stokes equation, see [1], � � � � � � � � � � � � � � � � 0 0 2 02 4 3 v t v t v x a a p x � � � � � � � � � � �� � � � � � � �x r x r v 1 2 2� �� � �� , (1) the continuity equation taking into account the boundary layer, see [2, 3], � � �� � � � � � � � �� � � � � � � � � � � � � �� � t r x r v r x r v v x r 0 2 2 2 2 3 0 2 1 1 Pr � � � � � � � 0 21 2 1 2 r v t x , (2) where the fractional derivative represents an integrodifferen- tial operator � � � � � � �� � � � � �� 1 2 1 2 1f t f t t t t t d (3) and the thermodynamic state equation taking into account heat conductivity and mean temperature change, see [4], � � � � � � � � � � � � � � � � � p c c c c c r p V p 2 0 0 2 0 2 1 2 1 1 1 1 � � � � � � �� � 2 2� �x r v , (4) where � �� , p v, are acoustic density, pressure and velocity, p0 0 0, ,� � are equilibrium state pressure, density and tem- perature, � is mean temperature, �� � � ��, � a a t� is the driving acceleration, x is the spatial coordinate along the reso- nant cavity, t is time, � r r x� is radius of the resonator, � � c cVp is ratio of specific heats at constant pressure and volume, is the coefficient of thermal conduction, �0 is kinematic viscosity, �, � are the coefficients of bulk and shear viscosity, Pr is the Prandtl number, c0 is the small-signal sound speed due to equilibrium temperature �0 and c is the small-signal sound speed due to changed mean temperature defined as c c c2 0 2 0 0 2 0 1� � � � �� �� � �� � � � . 1 1 2 2 2 2 r x r x c t x a t � � �� � � � � � � � � � � � � � � � � � d d , (7) where � is velocity potential, v t� �� � . keywords: � c; � d; � r; � t; � � cache: ap-364.pdf plain text: ap-364.txt item: #826 of 1656 id: ap-366 author: Bálek, R.; Šlegrová, Z. title: A Comparison of Acoustic Field Measurement by a Microphone and by an Optical Interferometric Probe date: 2002 words: 2737 flesch: 61 summary: 1: System of coordinates The integral phase change (5) is in terms of plane waves equal to: � � � � � �� �� � � � �z z A A z A At kL p t p t� � � �0 0 1 1 1 0 2 2 2sin sin , (7) or, more simply, � � � � � �� � �z z zt t t� �1 2 (8) � � � �� z izt k p t� 0 , (9) where piz(t) is the integral value of the acoustic pressure. This holds in terms of the Raman-Nath diffraction regime, which is restricted by the Klein-Cook parameter Q and the Raman-Nath parameter � [1] within the bounds Q � 1 (1) and Q � � � 1. (2) The Q and � are defined as follows: Q L n � 2 0 �� �� (3) � � � � � 2 L n , (4) where � [m] is the laser light wavelength in a vacuum, � [m] is the acoustic wavelength in the interaction medium, n0 [-] is the refractive index in a medium without ultrasound, �n [-] is the amplitude of the refractive index changes and L keywords: frequency; laser; microphone; pressure; signal; � � cache: ap-366.pdf plain text: ap-366.txt item: #827 of 1656 id: ap-368 author: Koníček, P.; Bednařík, M.; Červenka, M. title: Propagation of Quasi-plane Nonlinear Waves in Tubes date: 2002 words: 6242 flesch: 66 summary: The solution of the linearized GBE for the boundary con- dition � � � �v vz zm0, sin� ��� can be expressed as � �� � � �v v z zz zm� � � �exp sin� � �� �b b . (32) where � is the attenuation coefficient for the classical thermo- -viscous loss mechanism � � � � b c 2 0 0 32 (33) and the attenuation coefficient �b represents the losses due to the wall friction � �b � �B . The cut-off frequency of the first symmetric mode in a cir- cular waveguide is given by the formula f c k c Rm1 � � �0 1 0 02 2� � � � , (36) where k1 is the radial wave number of the first mode and � ��� � .38317 is the first zero point of the Bessel function derivative: � �� � �J0 0�� . keywords: equation; frequency; kzk; t �; velocity; z �; � b; � r; � v; � � cache: ap-368.pdf plain text: ap-368.txt item: #828 of 1656 id: ap-370 author: Sýkora, M. title: Reliability Analysis of a Steel Frame date: 2002 words: 5727 flesch: 59 summary: The peak velocity pressure can be written as: � � � � � �q z c z c z vbp g r� 2 21 2 � (5) where cg(z) (9) � �M Bg g Bs BwS,y roof frame� � � �837 809 1327. . . keywords: analysis; buckling; extremes; reliability; snow; time; wind; � � cache: ap-370.pdf plain text: ap-370.txt item: #829 of 1656 id: ap-372 author: Novák, J. title: Analysis of Phase Evaluation Algorithms in an Interferometric Method for Static Deformation Measurement date: 2002 words: 5176 flesch: 59 summary: The resulting error of phase values �� is then given by � �� � � �� � �� � � , (14) where are the calculated phase values and �� are the original phase values. The difference in computing time between © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 39 Acta Polytechnica Vol. 42 No. 4/2002 A1: N �3, � � � 4 tan , , , , , , , , �� � � � a b a b a b a b 12 3 2 3 2 12 12 12 3 2 3 2 A2: N �3, � � � 2 � � � � tan , , , , , , , , , , �� � � � � � � a b b b a a a b a a 1 3 2 3 12 1 3 2 3 12 1 3 1 3 2 3 1� �� �2 2 3 12b b, ,� A3: N �3, � �2 3� � � � �� � tan , , , , , , , , , �� � � � � � � 3 3 3 2 12 1 3 3 2 12 1 3 3 2 3 2 12 a b b b a a a b a a� �� �1 3 12 1 3, , ,b b� A4: N �5, � � � 2 � � � � � � tan , , , , , , , , , �� � � � � � � 2 2 4 3 1 3 5 2 4 3 1 3 5 3 1 3 5 3 1 3 b a a a b b a a b b� �, , ,5 2 4 2 44� a b A5: N �5, � � � 2 � � tan , , , , , , , , �� � � � � � � �7 3 3 3 34 2 1 3 5 3 12 5 4 4 2 1 3 5 3a b b b b b a a a� �� � � � 12 5 4 4 2 4 2 1 3 5 3 12 5 4 1 3 549 3 3 3 3 , , , , , , , , , , � � � � � � a a b a a a a b b� �3 12 5 4� �b b, , A6: N �7, � � � 2 � �� � � �� � tan , , , , , , , , �� � � � � � �7 4 4 7 4 4 4 3 5 17 4 2 4 6 3 5 17 4 2 4 6b b a a a a b b � �� � � �� �a a b b a a b b4 2 4 6 4 2 4 6 3 5 17 3 5 174 4 4 7 7, , , , , , , ,� � � � � A7: N �7, � � � 3 � �� � � � tan , , , , , , , , , �� � � � � � � � �3 6 2 5 3 1 3 2 4 6 4 7 5 6 2 5 3 1 3a a b b b b b b a� �� � � �� � a a a a a b b a a a a 2 4 6 4 7 5 6 2 5 3 6 2 5 3 1 3 2 4 6 43 , , , , , , , , , , � � � � � � � �� �� �7 5 1 3 2 4 6 4 7 5, , , , ,b b b b� � � A8: N �9, � � � 4 � �� � tan , , , , , , , , , �� � � � � � � � �b b b a a a a a a2 8 3 7 4 6 4 1 5 2 5 8 6 9 2 8 32 2� �� � � � 7 4 6 4 1 5 2 5 8 6 9 2 8 3 7 4 6 2 8 3 72 2 � � � � � � � a b b b b a a a b b , , , , , , , , , ,� � � �� �� � � � � � � �b a a a a b b b b4 6 4 1 5 2 5 8 6 9 4 1 5 2 5 8 6 9, , , , , , , , , A9: N �11, � � � 2 � � � �� � tan , , , , , , , �� � � � � � � �4 8 15 2 4111 9 3 5 7 2 4 10 8 6 4 6 8 1b b b a a a a a� � � �� �, , , , , , , , , 11 9 3 5 7 2 4 10 8 6 4 6 8 111 9 3 8 15 2 8 1 � � � � � � � a a b b b b a a� �� � � �� �5 8 15 16 25 7 111 9 3 5 7 2 4 10 8 6 4 6 8 2a b b b a a a a b, , , , , , , , ,� � � � � � � �� �4 10 8 6 4 6 82� � �b b b, , , Table 3 the fastest three-step and the slowest eleven-step algorithm is approximately 25 %. keywords: algorithms; b b; b �; measurement; phase; values �; � tan; � � cache: ap-372.pdf plain text: ap-372.txt item: #830 of 1656 id: ap-3721 author: Blesak, Lukas; Goremikins, Vadims; Wald, Frantisek; Sajdlova, Tereza title: CONSTITUTIVE MODEL OF STEEL FIBRE REINFORCED CONCRETE SUBJECTED TO HIGH TEMPERATURES date: 2016 words: 4333 flesch: 52 summary: This paper focuses on the last point – material model simulation. The tensile behaviour pattern of this material code is based on a stress-fracture strain defi- nition, not on fracture energy as other material models in ATENA are, whilst the material model formula- tion is based on the strain decomposition into elastic, plastic and fracturing components [14]. keywords: behaviour; concrete; crack; fibre; figure; material; model; sfrc; steel; stress cache: ap-3721.pdf plain text: ap-3721.txt item: #831 of 1656 id: ap-374 author: Procházka, P. P.; Kugblenu, M. G. title: Certain Discrete Element Methods in Problems of Fracture Mechanics date: 2002 words: 7693 flesch: 65 summary: Assuming uniform distribution of the boundary quantities (displacements ui(x) and tractions pi(x), i 1, 2, and volume weight forces bi to be uniform in the domain �, and position- ing the points of observation � successively at the points �s, which are the centers of the boundary abscissas of the hexago- nal elements, a simplified version of (1) is written as: � � � �1 2 1 2 1 u p u u p ss is k t i s ik i s ikd d� � � ��� �� * *, ,x x x x� � �� � � 6 1 2 1 2 1 6 � �� � � � � � � � b u k t For displacements inside the element domain � it holds: � � � �u p u u p is k keywords: d �; r �; s �; � b; � c; � ij; � k; � p; � t; � u; � y; � � cache: ap-374.pdf plain text: ap-374.txt item: #832 of 1656 id: ap-3756 author: Červinka, Jan; Kulhánek, Robert; Pátek, Zdeněk title: AN AIRPLANE WITH UNCONVENTIONALLY PLACED PROPELLER POWER UNIT date: 2017 words: 10643 flesch: 60 summary: 1/2017 An Airplane with Unconventionally Placed Propeller Power Units ������������ CeC ����C��� ������������ CeC ����C�� ������������ CeC ����C����� ���CRrCeC ����C��� ���CRrCeC ����C�� � � �nrR �nrn0. The increment 4CL0 ≈ � � �I �TVo T TVo I IVo A −�� �IT T IT AT ��������������−O−�����−��� ��������������−O−�����−�� ��������������−O−�����−����� �� V−I−O−�����−��� �� V−I−O−�����−�� �� V−A−O−�����−��� �� V−A−O−�����−�� Figure 5. keywords: ipi �; nrr �; propellers; − �; � c; � cec; � crrcec; � ofipi; � −; � � cache: ap-3756.pdf plain text: ap-3756.txt item: #833 of 1656 id: ap-376 author: Novák, J. title: New Phase Shifting Algorithms Insensitive to Linear Phase Shift Errors date: 2002 words: 3294 flesch: 67 summary: From these phase calculation algorithms it is evident that firstly the phase values � ��� � �W � , must be determined and then the discontinuities in the phase data can be proper- ly unwrapped using suitable phase unwrapping procedures Then according to the sign of the expressions we can de- termine the wrapped phase values � ��� � �W � , . keywords: algorithms; phase; shift; values �; � tan; � � cache: ap-376.pdf plain text: ap-376.txt item: #834 of 1656 id: ap-3762 author: Yuferov, Vladimir; Shariy, Sergey; Tkachova, Tetiana; Katrechko, Vyacheslav; Svichkar, Alexander; Ilichova, Vira; Shvets, Mykhailo; Mufel, Evgen title: CALCULATIONS OF ION TRAJECTORIES AT MAGNETOPLASMA SEPARATION AND EXPERIMENTS WITH POLYATOMIC GASES date: 2017 words: 3180 flesch: 60 summary: Calculations of molecular ions trajectories in SNF plasma rotated in EXH fields At the SNF heating [12] the amount of the FP can be significantly reduced due to removal of the FP with dissociation energy (εi) less than their own ionization energy (φi) and dissociation energy of uranium oxide (ε): εi < φi < ε. No. 5(93), pp.184-187. 77 Acta Polytechnica 57(1):71–77, 2017 1 Introduction 2 Calculations of molecular ions trajectories in SNF plasma rotated in EXH fields 3 Experiments with plasma of monatomic and polyatomic gases 4 Two-stage plasma source 5 Summary References keywords: discharge; energy; figure; ionization; ions; plasma; snf; stage cache: ap-3762.pdf plain text: ap-3762.txt item: #835 of 1656 id: ap-3766 author: Borduleva, Alena Olegovna; Bleykher, Galina Alekseevna; Sidelev, Dmitrii Vladimirovich; Krivobokov, Valeriy Pavlovich title: MAGNETRON SPUTTERING WITH HOT SOLID TARGET: THERMAL PROCESSES AND EROSION date: 2016 words: 4945 flesch: 58 summary: Creating evaporation on the surface of a high-power pulsed magnetron target by insulating it thermally could be a way to increase the coating deposition rate, due to the fact that it occurs continuously, and the particles removed from the surface between pulses will not be involved in the ionization processes near the target. Sputtering yield increase with target temperature for Ar. keywords: energy; evaporation; heat; magnetron; power; rate; sputtering; surface; target; temperature cache: ap-3766.pdf plain text: ap-3766.txt item: #836 of 1656 id: ap-3770 author: Jílková, Lenka; Hlinčík, Tomáš; Ciahotný, Karel title: DETERMINATION OF WATER CONTENT IN PYROLYTIC TARS USING COULOMETRIC KARL-FISHER TITRATION date: 2017 words: 4145 flesch: 59 summary: Differentiation of rye and wheat flour as well as mixtures by using the kinetics of Karl Fischer water titration. Nano-encapsulation competitiveness of omega-3 fatty acids and correlations of thermal analysis and Karl Fischer water titration for European anchovy (Engraulis encrasicolus L.) oil/b-cyclodextrin complexes. keywords: content; determination; fischer; karl; pyrolysis; tar; titration; water; water content cache: ap-3770.pdf plain text: ap-3770.txt item: #837 of 1656 id: ap-3774 author: Abdullah, Hikmat Najem; Abed, Hadeel Sami title: IMPROVEMENT OF ENERGY CONSUMPTION IN SPECTRUM SENSING COGNITIVE RADIO NETWORKS USING AN EFFICIENT TWO STAGE SENSING METHOD date: 2017 words: 6885 flesch: 60 summary: Energy consumption is considered as a big problem in this technology, especially during a spectrum sensing. The theoretical analysis to calculate the amount of energy consumption, using the proposed method during sensing stage as well as the transmission stage during transmitting a local decision to the fusion center FC, are derived. keywords: consumption; detection; energy; energy consumption; method; performance; sensing cache: ap-3774.pdf plain text: ap-3774.txt item: #838 of 1656 id: ap-378 author: Procházka, P. P.; Kugblenu, M. G. title: Application of Discrete Element Methods to the Problem of Rock Bumps date: 2002 words: 4199 flesch: 66 summary: A summary is published in [7], where it is pointed out that at failure rocks with a wide range of strengths approximately satisfy the fol- lowing equation: � � � � �� � � �� � � � A 1 2 , where � and � are the shear and normal stresses along the failure plane, �� is the rock tensile strength (note that tension is positive), 2� is a universal constant equal to 0.684 ± correctional term, and A is a material constant. AP02_04.vp 1 Introduction The arguments for using discrete element methods in- stead of methods defined on the continuum of the entire domain were discussed in a previous paper by the authors, [9]. keywords: bumps; coal; fig; gas; kpa; pn �; rock; � � cache: ap-378.pdf plain text: ap-378.txt item: #839 of 1656 id: ap-3782 author: Oyedoh, Eghe A.; Ekwonu, Michael C. title: EXPERIMENTAL INVESTIGATION ON CHROMIUM(VI) REMOVAL FROM AQUEOUS SOLUTION USING ACTIVATED CARBON RESORCINOL FORMALDEHYDE XEROGELS date: 2016 words: 3718 flesch: 54 summary: Other functional groups may also be involved in metal ions adsorption. Adsorption isotherms Experimental data obtained from the batch tests were analyzed using the Langmuir and Freundlich isotherms to determine the isotherm model that described the experimental data more accurately. keywords: acrf; adsorption; carbon; chemical; chromium; chromium(vi; cr(vi; effect; ions; isotherm; metal cache: ap-3782.pdf plain text: ap-3782.txt item: #840 of 1656 id: ap-3788 author: Vagenknechtová, Alice; Ciahotný, Karel; Vrbová, Veronika title: SILOXANES REMOVAL FROM BIOGAS USING ACTIVATED CARBON date: 2017 words: 4605 flesch: 54 summary: For siloxane removal from biogas, its adsorption on activated carbon is often used. Using laboratory apparatus and biogas produced from waste-water treatment sludge at the wastewater treatment plant Prague Bubeneč various activated carbons were tested for siloxane removal and their adsorption capacities for siloxanes were estimated, and the adsorbent cost relative to 1 kg of siloxanes removed from biogas were calculated. keywords: adsorbents; adsorption; apparatus; biogas; carbon; compounds; removal; separation; siloxanes; substances; testing cache: ap-3788.pdf plain text: ap-3788.txt item: #841 of 1656 id: ap-3794 author: Masáková, Zuzana; Pelantová, Edita; Starosta, Štěpán title: ITINERARIES INDUCED BY EXCHANGE OF THREE INTERVALS date: 2016 words: 8134 flesch: 82 summary: Given letters X,Y, Z ∈ {A,B,C} and a finite word w ∈ {A,B,C}∗, let ωXY→Z(w) be the set of words obtained from w re- placing one factor XY by the letter Z, i.e., ωXY→Z(w) = {w1Zw2 : w = w1XY w2 }. Under the name three gap theorem one usually refers to the description of gaps between neighbouring elements of the set G(α, δ) := { n ∈ N : {nα} < δ } ⊂ N, where α ∈ R \Q, δ ∈ (0, 1), see [15]. keywords: x ∈ cache: ap-3794.pdf plain text: ap-3794.txt item: #842 of 1656 id: ap-380 author: Fořt, I.; Jirout, T.; Sperling, R.; Jambere, S.; Rieger, F. title: Study of Pumping Capacity of Pitched Blade Impellers date: 2002 words: 3207 flesch: 62 summary: , H T � 055 10. ; . , � � � �15 60; , 4 baffles b T �01. , Re .M � �10 104. 2: Sketch of pitched blade impellers with three or six blades – Czech Standard CVS 691020 (a/ nB � 3: � � 24°, 35°, 45°, b/ nB � 6: � � 45°, h/D � 0.2) Fig. keywords: blade; impeller; pumping; � � cache: ap-380.pdf plain text: ap-380.txt item: #843 of 1656 id: ap-3803 author: Vannucchi de Camargo, Felipe; Marcos Guilherme, Carlos Eduardo; Fragassa, Cristiano; Pavlovic, Ana title: CYCLIC STRESS ANALYSIS OF POLYESTER, ARAMID, POLYETHYLENE AND LIQUID CRYSTAL POLYMER YARNS date: 2016 words: 3578 flesch: 55 summary: Always supported by proper standard test- ing regulations for the scale chosen (i.e. fibre, strand, sub cable), the discovery of a constant or function that defines the change in fatigue resistance through the number of yarns associated on it, would be a great gain in applying the research to industry needs, once mathematical extrapolations could be constituted to predict, in the best case scenario, the behaviour of an actual gross rope. The loading rate was imposed as a percent- age of the specimen length: 50% for AR (250mm/min) and 100% for other materials (500mm/min) keywords: fatigue; figure; loading; materials; mooring; resistance; tests; yarns; ybl cache: ap-3803.pdf plain text: ap-3803.txt item: #844 of 1656 id: ap-3805 author: Pečinka, Jiří; Bugajski, Gabriel Thomas; Kmoch, Petr; Jílek, Adolf title: JET ENGINE INLET DISTORTION SCREEN AND DESCRIPTOR EVALUATION date: 2017 words: 5472 flesch: 61 summary: Total pressure distortion is one of the three basic flow distortions (total pressure, total temperature and swirl distortion) that might appear at the inlet of a gas turbine engine (GTE) during operation. Accordingly, it was decided to evaluate the most commonly used distortion descriptors for basic types of total pressure distortions created by several screens. keywords: descriptors; distortion; engine; flow; inlet; mass; pressure; radial; rate; ring; screen; total cache: ap-3805.pdf plain text: ap-3805.txt item: #845 of 1656 id: ap-3817 author: Hilar, Matous; Tuan, Nhu The title: EVALUATION OF THE SURFACE SETTLEMENT ABOVE THE PRAGUE METRO LINE A EXTENSION CONSTRUCTED BY TWO SHIELDS date: 2016 words: 3454 flesch: 61 summary: [5] Beňo J., Hilar M.: Steel fibre reinforced concrete segments for tunnel linings – verification by extensive laboratory testing and numerical modelling. Variant B (contraction): (1.) initial stress; (2.) excavation and tunnel lining installation; (3.) tunnel lining contraction. keywords: cross; metro; modelling; prague; section; settlement; tunnel cache: ap-3817.pdf plain text: ap-3817.txt item: #846 of 1656 id: ap-3818 author: Mendonça da Silveira, Francisco Eugenio title: TEARING MODES GROWTH RATE AMPLIFICATION DUE TO FINITE CURRENT RELAXATION date: 2017 words: 4891 flesch: 73 summary: Sov Phys Tech Phys 15:175, 1970. J Plasma Phys 79:45, 2013. keywords: modes; phys; plasma; rate cache: ap-3818.pdf plain text: ap-3818.txt item: #847 of 1656 id: ap-382 author: Holický, M.; Marková, J. title: Reliability of Concrete Elements Designed for Alternative Load Combinations Provided in Eurocodes date: 2003 words: 3837 flesch: 56 summary: [..g., 8, 9] to develop comprehensive background materials enabling national decisions concerning load combinations and partial factors to be applied in accordance with the present version ofEN 1990 The lowest reliability level is provided by load combination C, allowed in EN 1990 keywords: alternative; beam; combination; concrete; design; load; reliability cache: ap-382.pdf plain text: ap-382.txt item: #848 of 1656 id: ap-384 author: Ficker, T.; Podešvová, Z. title: Modified Glaser’s Condensation Model date: 2003 words: 1604 flesch: 68 summary: 2 Non-isothermal steady-state diffusion In our previous paper I I 0] we developed two basic models for describing non-isothermal steady-state diffirsion of water vapor through porous building materials, namely the DIAL and DRAL models. [m] ?tKl Glaser's standard model DIAL model DRAL model Rd.lo-e . keywords: building; condensation; dial; glaser; model; vol cache: ap-384.pdf plain text: ap-384.txt item: #849 of 1656 id: ap-386 author: Böszörményi, L.; Böszörményi, G. title: Prospects for Geothermal Energy Conversion through a Hybrid Combined Cycle Power Plant date: 2003 words: 3525 flesch: 59 summary: In the case of the concept described here, progressive energy technologies enable very effective use of geothermal heat in comparison with only direct use in the DHN, especially in rhe summer period (see in Fig. 2). This indirect conversion of geothermal heat is much more eflicient than technologies for direct conversion (for example the Organic Rankine Cycle or Kalina cycle), which operate with llVo efficiency. keywords: cycle; cycle power; energy; heat; plant; power; use; water cache: ap-386.pdf plain text: ap-386.txt item: #850 of 1656 id: ap-388 author: Mikeš, P. title: Reconstruction of Object Position in X-ray Mammograms date: 2003 words: 1825 flesch: 62 summary: Experimental verification will rnake use of the similarity between human female breast tissue structure and that of a sow's breast. Calcifications and their relatively well-known links with various breast disorders are most frequently used for valuation of malignity. keywords: axis; breast; compression; nipple; reconstruction; tissue cache: ap-388.pdf plain text: ap-388.txt item: #851 of 1656 id: ap-3885 author: Kytyr, Daniel; Krčmářová, Nela; Šleichrt, Jan; Fíla, Tomáš; Koudelka, Petr; Gantar, Ana; Novak, Sasa title: DEFORMATION RESPONSE OF GELLAN GUM BASED BONE SCAFFOLD SUBJECTED TO UNIAXIAL QUASI-STATIC LOADING date: 2017 words: 5285 flesch: 64 summary: Moreover, as the mechanical properties are significantly influenced by testing conditions the experiment was performed using dry samples and also using samples immersed in the simulated body fluid. Dimensions of GG samples with 50 wt% BAG for the compression test under dry conditions. keywords: bag; conditions; gg samples; gg00; gg50; gg70; kpa; samples; strain; test cache: ap-3885.pdf plain text: ap-3885.txt item: #852 of 1656 id: ap-3893 author: Veselý, Jan title: NUMERICAL MODELLING OF THE SOIL BEHAVIOUR BY USING NEWLY DEVELOPED ADVANCED MATERIAL MODEL date: 2017 words: 6177 flesch: 62 summary: This paper describes a theoretical background, implementation and validation of the newly developed Jardine plastic hardening-softening model (JPHS model), which can be used for numerical modelling of the soils behaviour. JPHS model — flow chart. keywords: clay; data; figure; hardening; jphs; model; numerical; plastic; strain; stress; surface; yield cache: ap-3893.pdf plain text: ap-3893.txt item: #853 of 1656 id: ap-390 author: Beran, V. title: Management Processes in Technical-economic Design, Decision-making, Fractals and Market Bubbles date: 2003 words: 5674 flesch: 57 summary: To what extent will be decision processes D- in time strata tx+,? Diagrammatic calculations according to (3) to (5) are shown in Thble 3 (a segment fiom a wider calculation of how the market will fill up in time (vertical axis) and the space for steering decisions for management shows the demand op- portunities (horizontal axis)). keywords: area; basis; decision; making; management; market; model; process; processes; solutions; steering; technical; time cache: ap-390.pdf plain text: ap-390.txt item: #854 of 1656 id: ap-3907 author: Çelik, İsmet; Güneş, Ebubekir Can title: USE OF DISC SPRINGS IN A PELLET FUEL MACHINE FOR PRESSURE REGULATION AND PREVENTION OF DAMAGE date: 2017 words: 4875 flesch: 60 summary: Keywords: biomass pellet; pellet machine; disc spring; Almen–Laszlo; FEA; pelletizing pressure. [6] Mani, S., Tabil, L.G., Sokhansanj, S.: Effects of compressive force, particle size and moisture content on mechanical properties of biomass pellets from grasses, Biomass and Bioenergy, 30, 2006, p. 648–654. doi:10.1016/j.biombioe.2005.01.004 keywords: biomass; die; disc; force; fuel; moisture; pellet; pelletizing; pressure; springs; stress cache: ap-3907.pdf plain text: ap-3907.txt item: #855 of 1656 id: ap-3908 author: Kačur, Ján; Kostúr, Karol title: APPROACHES TO THE GAS CONTROL IN UCG date: 2017 words: 13089 flesch: 55 summary: The control variable is the power frequency of the motor calculated by control system according to equation (33) and sent as an analog voltage signal (0–10VDC) to the frequency inverter (see Figure 20). The outcome is a control system for the stabilization of oxidant to the gasifier, control system for the stabilization of the temperature in the gasifier and control system for the stabilization of the oxygen concentration in the produced gas. keywords: air; coal; concentration; control; control system; controller; figure; flow; gas control; gasification; model; parameters; pressure; process; stabilization; syngas; system; temperature; ucg; underground; value; variable cache: ap-3908.pdf plain text: ap-3908.txt item: #856 of 1656 id: ap-392 author: Toman, M.; Procházka, P. title: An Algorithm for Investigating the Structure of Material Surfaces date: 2003 words: 5640 flesch: 62 summary: pre-processing of the input images, o search for grain boundaries, o calculation of probability distribution of grain size. The localization of grain boundaries may be applied to an investigation of any materials with a surface stnrcture similar to a grain structure. keywords: algorithm; boundaries; grain; grain boundaries; grain size; image; input; input image; intensity; peaks; points; size cache: ap-392.pdf plain text: ap-392.txt item: #857 of 1656 id: ap-394 author: Ficker, T. title: A Short Note on Non-isothermal Diffusion Models date: 2003 words: 581 flesch: 53 summary: Naturally, throughout the year the structure is mostly exposed to non-isothermal states but, especially in the summer season, it may be subjected to a purely isothermal state. [], the DIAL and DRAL non-isothermal difiLsion models were derived and compared with the standard isothermal models commonly used in building thermal technology. keywords: models; relations cache: ap-394.pdf plain text: ap-394.txt item: #858 of 1656 id: ap-3940 author: Toman, Rastislav; Polóni, Marián; Chríbik, Andrej title: PRELIMINARY STUDY ON COMBUSTION AND OVERALL PARAMETERS OF SYNGAS FUEL MIXTURES FOR SPARK IGNITION COMBUSTION ENGINE date: 2017 words: 7045 flesch: 53 summary: [1] LHV lower heating value [kJ/kg] Acronyms 1Cyl single-cylinder combustion analysis model Full full scale engine model EVC exhaust valve closes EVO exhaust valve opens IVC inlet valve closes IVO inlet valve opens SI spark ignition engine TDC top dead center NG natural gas SG syngas CH4 methane molecule H2 molecular hydrogen N2 molecular nitrogen O2 molecular oxygen CO carbon monoxide CO2 carbon dioxide NOx mono-nitrogen oxides (NO and NO2) 46 vol. Other possibility is to employ the advanced predic- tive combustion models to model and study the ICE combustion process for different fuel mixtures keywords: analysis; burn; combustion; cylinder; engine; figure; fuel; lgw; mixtures; model; paper; parameters; pressure; simulation; speed; syngas cache: ap-3940.pdf plain text: ap-3940.txt item: #859 of 1656 id: ap-3944 author: Petrů, Jan; Křivda, Vladislav title: HEIGHT AND WIDTH PARAMETERS FOR ENSURING PASSAGE OF EXCESSIVE LOADS ON ROADS date: 2017 words: 4771 flesch: 60 summary: Transporters and the escorts for over- sized cargo face this fact regularly during the prepa- ration of transport routes. Vertical clearance on the roads Transport routes are selected also with regard to the bridges. keywords: cargo; czech; height; parameters; passage; republic; roads; transport; width cache: ap-3944.pdf plain text: ap-3944.txt item: #860 of 1656 id: ap-396 author: Zoriy, M.; Černý, F.; Palamarchuk, D.; Konvičková, S.; Hüttel, I. title: Measuring the Process Parameters of the IBAD Method date: 2003 words: 2062 flesch: 70 summary: We therefore need to perform a mathematical procedure to transform ion beam density into atomic nitrogen flux. l0-lsc - electron charge magnitude; P1g - flux of atomic nitrogen ions; P2^*' - flux of molecular nitrogen ions; P - total flux of ions; N1,'- flux of nitrogen atoms included in atomic nitrogen ions; N2.iy - flux of nitrogen atoms included in molecular nitrogen ions; N - total flux of nitrogen atoms. keywords: atoms; beam; flux; ion; ions; nitrogen cache: ap-396.pdf plain text: ap-396.txt item: #861 of 1656 id: ap-398 author: Palamarchuk, D.; Zoriy, M.; Gurovič, J.; Černý, F.; Konvičková, S.; Hüttel, I. title: DLC Films Deposited by the DC PACVD Method date: 2003 words: 977 flesch: 62 summary: A problem that affects some of these methods is their poor adhesion to steel substrates with no intermediate layer' One fotential solution to this problem is to use current plasma for hepositing DLC films with no intermediate layer' This paper ,,.idi, the adhesion of DLC films to steel substrates and the microhardness of the laYer. l: Schematic view of DC PACVD aPParatus Table 1: Deposition Parameters of DLC films Then we investigated the dependence of microhardness o.r biu, voltage anithe adhesion of the DLC layers to the steel substrate. keywords: adhesion; bias; dlc; films; voltage cache: ap-398.pdf plain text: ap-398.txt item: #862 of 1656 id: ap-3980 author: Sinuvasan, R; Krishnakumar, K; Tamizhmani, K M; Leach, PGL title: FURTHER GENERALISATIONS OF THE KUMMER-SCHWARZ EQUATION: ALGEBRAIC AND SINGULARITY PROPERTIES date: 2017 words: 2323 flesch: 62 summary: We examine the sequence of equations introduced above in terms of singularity analysis. We reported the symmetries, singularity properties and solutions for the members of the family. keywords: equation cache: ap-3980.pdf plain text: ap-3980.txt item: #863 of 1656 id: ap-3988 author: Sunu, Putu Wijaya; Rasta, I Made title: HEAT TRANSFER ENHANCEMENT AND PRESSURE DROP OF GROOVED ANNULUS OF DOUBLE PIPE HEAT EXCHANGER date: 2017 words: 3271 flesch: 66 summary: Keywords: heat transfer; friction factor; circumferential rectangular grooves; annulus. The experiment apparatus was designed to determine the pressure drop, heat transfer and flow visualization. keywords: annulus; drop; exchanger; flow; grooves; heat; pipe; pressure; transfer cache: ap-3988.pdf plain text: ap-3988.txt item: #864 of 1656 id: ap-3989 author: Beno, Matej; Patzák, Bořek title: FICTITIOUS DOMAIN METHOD FOR NUMERICAL SIMULATION OF INCOMPRESSIBLE VISCOUS FLOW AROUND RIGID BODIES date: 2017 words: 3612 flesch: 61 summary: Keywords: finite element method; computational fluid dynamics; fictitious domain method; Lagrange multipliers; flow around obstacles. This article aims at reducing these compu- tational costs by avoiding the need of explicit repre- sentation of individual reinforcing bars by adopting an approach based on fictitious domain method to solve the problem of Newtonian incompressible flow with rigid body obstacles on regular, structured computa- tional grid, where the individual reinforcing bars can be inserted arbitrarily and independently of the un- derlying mesh. keywords: domain; flow; fluid; method cache: ap-3989.pdf plain text: ap-3989.txt item: #865 of 1656 id: ap-400 author: Janda, T.; Kuklík, M.; Šejnoha, M. title: Numerical Implementation of Isotropic Consolidation of Clayey Soils date: 2003 words: 4400 flesch: 60 summary: 2: Time variation of pore pressure with no smoothing of the bilinear consolidation line double S type of curve where individual segments of this curve are linked to a given slope of the bilinear consolidation line. AIso note that the pore pressure dependent material parameters K and e are found from an initial pre- diction of pore pressure T;'(tp) at time 6u r-q. i7). keywords: consolidation; fig; finite; form; line; method; model; numerical; parameters; pressure; time cache: ap-400.pdf plain text: ap-400.txt item: #866 of 1656 id: ap-402 author: Tesař, V. title: Fluidic Control of Molten Metal Flow date: 2003 words: 4328 flesch: 60 summary: molten metal flow - certainly a highly unusual signal carrying medium, but fully in line with the usual tendency of fluidics to employ the working fluid for signal transfer and processing. the most unusual feature of the discussed con- trollers - signal transfer and processing (sign inversion and amplification) in molten metal flows - is realisable only thanks to the progress in the materials and manufacturing side of the project. keywords: chamber; control; fig; flow; metal; molten; radial; tundish; valve; vortex; vortex chamber cache: ap-402.pdf plain text: ap-402.txt item: #867 of 1656 id: ap-4038 author: Kolařík, Filip; Patzák, Bořek title: IMPLEMENTATION OF 3D VOF TRACKING ALGORITHM BASED ON BINARY SPACE-PARTITIONING date: 2017 words: 7220 flesch: 63 summary: The interface is modeled using the Volume-Of-Fluid method, where the advection of volume fractions is treated by a purely geometrical method. The idea is to form a Taylor series expansion of volume fraction fT S i for each interface cell i with VOF value fi to each of its adjacent cell with k with VOF value fk. keywords: algorithm; bsp; cube; faces; figure; fluid; interface; method; plane; polyhedron; tree; vof; volume cache: ap-4038.pdf plain text: ap-4038.txt item: #868 of 1656 id: ap-404 author: Ficker, T.; Podešvová, Z. title: Models for Non-isothermal Steady-State Diffusion in Porous Building Materials date: 2003 words: 2863 flesch: 67 summary: A reasonable choice [5] for the temperature profile (x) of a wall is the linear function T, -T^T@)=rt--' ,-'*, (Tt>Til ' (3) & Frck's first law for non-isothermal diffusion assumes the following form Nearly constant total concentration c can be expected not only with non-isothermal diffusion of a gas in a solid cotn- pact body which does not contain any air pores but also in solid materials containing closed pores (cavities) filled with air. keywords: air; conditions; diffusion; model; profile; temperature cache: ap-404.pdf plain text: ap-404.txt item: #869 of 1656 id: ap-4040 author: Vokurka, Karel title: EXPERIMENTAL DETERMINATION OF TEMPERATURES IN SPARK GENERATED BUBBLES OSCILLATING IN WATER date: 2017 words: 5882 flesch: 62 summary: Intensity of oscillation of spark generated bubbles. The individual frames in Figure 2 can be traced to the corresponding points on the plot of bubble radius vs. time, given in Figure 3. keywords: bubble; core; figure; plasma; radius; rm1; spark; temperature; time; θm1 cache: ap-4040.pdf plain text: ap-4040.txt item: #870 of 1656 id: ap-406 author: Cimbala, R.; Kršňák, I.; Kolcunová, I. title: The Computing of the Influence of a Steady Element on the Polarization Spectrum date: 2003 words: 3238 flesch: 69 summary: 8: Calculation without steady element Fig. 9: Calculation with steady element Acta Polytechnica Vol. 43 No. 2/2003 calculalion t1me[sl t1me[sl 1000 1000 real real 100 100 10 10 100.l------~-----~- _ 1 <' loooI 100 .------------,------ 1 <' ~1000 +--'=---=------------------1 ~ :s Fig. In the third column of data with 7 expansion elements can be seen that the calculation exactly revealed steady element 10 and deter­ mined its value. keywords: calculation; current; data; element; fig; model; polarization; present; time cache: ap-406.pdf plain text: ap-406.txt item: #871 of 1656 id: ap-4068 author: Štancl, Jaromír; Skočilas, Jan; Landfeld, Aleš; Žitný, Rudolf; Houška, Milan title: ELECTRICAL AND THERMODYNAMIC PROPERTIES OF A COLLAGEN SOLUTION date: 2017 words: 3570 flesch: 50 summary: The transition region of collagen to gelatin has been observed from the measured temperature dependence of specific electrical conductivity, and has been confirmed by specific heat capacity measurements by a differential scanning calorimetry. The results of our experiments show that specific electrical conductivity of collagen solution is strongly dependent on temperature. keywords: capacity; collagen; conductivity; heat; material; measurements; sec; temperature cache: ap-4068.pdf plain text: ap-4068.txt item: #872 of 1656 id: ap-4070 author: Holčapek, Ondřej; Reiterman, Pavel; Konvalinka, Petr title: CYCLIC TEMPERATURE LOADING RESIDUAL FLEXURAL STRENGHT OF REFRACTORY SLABS date: 2017 words: 5138 flesch: 59 summary: Tensile strength in bending of these slabs (after cyclic temperature loading at 600 °C) achieved 6.0MPa. The aim of this article is to investigate the effect of cyclic temperature loading at two levels – 600 °C and 1000 °C. keywords: cement; concrete; fibres; loading; refractory; slabs; strength; temperature cache: ap-4070.pdf plain text: ap-4070.txt item: #873 of 1656 id: ap-4073 author: Bradáč, Josef; Moravec, Jaromír title: THE IMPACT OF SELECTED PROCESSES AND TECHNOLOGICAL PARAMETERS ON THE GEOMETRY OF THE WELD POOL WHEN WELDING IN SHIELS GAS ATMOSPHERE date: 2017 words: 5012 flesch: 58 summary: Role of sulfur and processing variables on the temporal evolution of weld pool geometry during mutikilowatt laser beam welding of steel. Double ellipsoidal heat source model enables simulations with very good agreement with the reality, especially when simulating the electric arc welding processes. keywords: current; diameter; figure; geometry; heat; parameters; pool; temperature; weld pool; welding; wire cache: ap-4073.pdf plain text: ap-4073.txt item: #874 of 1656 id: ap-4078 author: Peciar, Peter; Macho, Oliver; Eckert, Maroš; Kabát, Juraj; Gabrišová, Ľudmila; Kotora, Peter; Fekete, Roman; Peciar, Marián title: MODIFICATION OF POWDER MATERIAL BY COMPACTION PROCESSING date: 2017 words: 4290 flesch: 56 summary: Distribution characteristics of pure raw material and created product In the processing of powder materials, the quality and size of the products are strongly determined by, among other things, the distribution characteristics of the processed raw material. Acta Polytechnica doi:10.14311/AP.2017.57.0116 Acta Polytechnica 57(2):116–124, 2017 © Czech Technical University in Prague, 2017 available online at http://ojs.cvut.cz/ojs/index.php/ap MODIFICATION OF POWDER MATERIAL BY COMPACTION PROCESSING Peter Peciar∗, Oliver Macho, Maroš Eckert, Juraj Kabát, Ľudmila Gabrišová, Peter Kotora, Roman Fekete, Marián Peciar Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, Institute of Process Engineering, Námestie Slobody 17, 812 31, Bratislava, Slovakia ∗ corresponding author: peter.peciar@stuba.sk Abstract. keywords: compaction; compressibility; figure; material; particles; powder; process; product; rolls; strength cache: ap-4078.pdf plain text: ap-4078.txt item: #875 of 1656 id: ap-408 author: Hladká, K. title: Tendencies in Spatial Planning in Austria date: 2003 words: 1866 flesch: 55 summary: 5 Conclusion The instruments of spatial planning in Austria are deter- mined in the Spatial Planning Acrs of the L.dnder, Thereby a distinction must be made between instruments of supralocal spatial planning, relating to the entire Land or parts of it, and drawn up by the Governments of the Lindit and rhose instrumenrs relating to local spatial planning, which refer to a community and which are drawn up by the local authorities with respect to their area of competence. ln Austria tke national government has no competence in spatial planning, but planning at the nationallevel is undertaken through a joint Jorum which has advisory powers, and in which the national government and the !.Jinder keywords: development; land; level; planning; plans; regional cache: ap-408.pdf plain text: ap-408.txt item: #876 of 1656 id: ap-4085 author: Schoř, Pavel title: AERODYNAMIC LOAD OF AN AIRCRAFT WITH A HIGHLY ELASTIC WING date: 2017 words: 5164 flesch: 64 summary: Keywords: aerodynamics, panel method, finite element method, wing load, fluid structure interaction. Eligibility Based on assumptions made in Sections 2.1 and 2.2, the method presented in this article is suitable for analysis of quasi-static maneuvers of an aircraft with elastic wings, operating at a low Mach number (M < 0.3) and sufficiently high Reynolds number (Re > 1000000). keywords: aerodynamic; aircraft; element; figure; lift; load; method; moment; panel; wing cache: ap-4085.pdf plain text: ap-4085.txt item: #877 of 1656 id: ap-4087 author: Fořt, Jan; Beran, Pavel; Konvalinka, Petr; Pavlík, Zbyšek; Černý, Robert title: EVALUATION OF THE APPLICATION OF A THERMAL INSULATION SYSTEM: IN-SITU COMPARISSON OF SEASONAL AND DAILY CLIMATIC FLUCTUATIONS date: 2017 words: 4533 flesch: 42 summary: Indoor ther- mal comfort can be perceived as the one of the most im- portant factors and achievement of the indoor thermal comfort for building occupants represents a substantial objective, which should be satisfied in order to provide appropriate working and health conditions Importance of the maintenance of ambient air is connected not only with comfort of building occupants, but also with health issues. keywords: application; building; conditions; doi:10.1016; energy; humidity; insulation; monitoring; profiles; system; temperature cache: ap-4087.pdf plain text: ap-4087.txt item: #878 of 1656 id: ap-4093 author: Vojtěchovský, Jan title: SURFACE CONSOLIDATION OF WALL PAINTINGS USING LIME NANO-SUSPENSIONS date: 2017 words: 6391 flesch: 47 summary: Test tubes 13, 16 and 17 contain lime suspensions diluted to 5 g/l, test tubes 28–33 contain lime suspensions mixed with silicic acid esters. both lime suspensions diluted with various alcohols to a concentration of 5 and 10 g of Ca(OH)2 per 1 litre of agent and subsequent applications of silicic acid esters (alkoxysilanes) and lime suspensions as well as on their mixtures. keywords: application; consolidants; consolidation; layer; lime; material; mixtures; paint; results; suspensions; test cache: ap-4093.pdf plain text: ap-4093.txt item: #879 of 1656 id: ap-410 author: Slanec, K.; Černý, F.; Gurovič, J.; Chmelík, V. title: Modifing the Surface Layers of Mechanical Components date: 2003 words: 5831 flesch: 68 summary: Howeve6 because of the repair message routing mechanism 'switching' between bypass rings centered at dif- ferent faulty nodes, bypass rings BR(r) can repair an even larger cluster of faulty nodes under convenient circumstances. Bypass ring of radius r centered at node c CE Set ofcore tree edges cei Core tree edge i E Set of all edges in underlying nenvork S.ly' EMT Extended multicast tree FC Cluster of faulty nodes gcp Greatest common prefix function HID., Hierarchical identifier of node rt related to node c ID, Identifier of node n h keywords: bypass; core; edges; failure; fault; message; multicast; node; repair; ring; routing; set; tree cache: ap-410.pdf plain text: ap-410.txt item: #880 of 1656 id: ap-412 author: Dynda, V. title: A Bypass-Ring Scheme for a Fault Tolerant Multicast date: 2003 words: 5831 flesch: 68 summary: Howeve6 because of the repair message routing mechanism 'switching' between bypass rings centered at dif- ferent faulty nodes, bypass rings BR(r) can repair an even larger cluster of faulty nodes under convenient circumstances. Bypass ring of radius r centered at node c CE Set ofcore tree edges cei Core tree edge i E Set of all edges in underlying nenvork S.ly' EMT Extended multicast tree FC Cluster of faulty nodes gcp Greatest common prefix function HID., Hierarchical identifier of node rt related to node c ID, Identifier of node n h keywords: bypass; core; edges; failure; fault; message; multicast; node; repair; ring; routing; set; tree cache: ap-412.pdf plain text: ap-412.txt item: #881 of 1656 id: ap-4125 author: Pylypaka, Serhii; Klendii, Mykola; Klendii, Oleksandra title: PARTICLE MOTION ON THE SURFACE OF A CONCAVE SOIL-TILLING DISK date: 2018 words: 8609 flesch: 59 summary: A mathematical model of soil particle motion on a disk operating element, which rotates about a fixed horizontal axis, has been developed. Conclusion A mathematical model of soil particle motion on a disk operating element, which rotates around a fixed horizontal axis, has been developed. keywords: angle; disk; disk surface; particle; particle motion; rotation; surface; velocity cache: ap-4125.pdf plain text: ap-4125.txt item: #882 of 1656 id: ap-4131 author: Sudibyo, Hanifrahmawan; Shabrina, Zata Lini; Wondah, Hartika Rafih; Hastuti, Retno Tri; Purnomo, Chandra Wahyu; Budhijanto, Wiratni title: ANAEROBIC DIGESTION OF LANDFILL LEACHATE WITH NATURAL ZEOLITE AND SUGARCANE BAGASSE FLY ASH AS THE MICROBIAL IMMOBILIZATION MEDIA IN PACKED BED REACTOR date: 2018 words: 7083 flesch: 58 summary: MATLAB calculation result for acidogenic cell (X1) inside the digester using natural zeolite and BFA as immobilization media. Comparison of SSE results of anaerobic leachate digestion using sugarcane bagasse fly ash as the immobilization media. keywords: anaerobic; bfa; cell; contois; correlation; digester; digestion; immobilization; immobilization media; kinetics; landfill; leachate; media; methane; scod; vfa; zeolite cache: ap-4131.pdf plain text: ap-4131.txt item: #883 of 1656 id: ap-4134 author: Řehounek, Luboš; Jíra, Aleš title: NUMERICAL AND MECHANICAL ANALYSES OF A 3D-PRINTED TITANIUM TRABECULAR DENTAL IMPLANT date: 2017 words: 6306 flesch: 56 summary: If proven to be satisfying in medical, mechanical and economic regards, trabecular structure could improve upon the former variants. Trabecular structure keywords: bone; fig; implant; material; model; modulus; properties; specimens; stress; structure; test cache: ap-4134.pdf plain text: ap-4134.txt item: #884 of 1656 id: ap-414 author: Kollár, M. title: Measurement of Light Intensity Based on a Flip-flop Sensor date: 2003 words: 1483 flesch: 71 summary: Keywords: measurement, tlip-flop sensor, light intensity, equiualent aoltage. 3 Proposed solution and experimental results Fig.4 shows a system for measuring light intensity. keywords: flip; flop; light; sensor; voltage cache: ap-414.pdf plain text: ap-414.txt item: #885 of 1656 id: ap-4151 author: Harte, Reinhard; Tschersich, Markus; Höffer, Rüdiger; Mekhail, Tarek title: DESIGN AND CONSTRUCTION OF A PROTOTYPE SOLAR UPDRAFT CHIMNEY IN ASWAN/EGYPT date: 2017 words: 10449 flesch: 54 summary: A simple method to evaluate the turbine power output for solar chimney systems was also proposed in the study using dimensional analysis. [5] Huang, H., Zhang, H., Huang, Y., Lu, F. Simulation calculation on solar chimney power plant system. keywords: analysis; aswan; cfd; chimney; collector; data; energy; figure; flow; inside; model; monitoring; results; scpp; solar; system; tower; wind cache: ap-4151.pdf plain text: ap-4151.txt item: #886 of 1656 id: ap-4152 author: Kovács, György title: OPTIMIZATION METHOD AND SOFTWARE FOR FUEL COST REDUCTION IN CASE OF ROAD TRANSPORT ACTIVITY date: 2017 words: 4824 flesch: 57 summary: The ratio of the road transport in Europe is 78% of the total freight volume [3], and because the fuel cost is the highest cost among the cost components of the transportation, every transport company puts a great emphasis on optimizing road transport activities and reducing transport costs. The main goal of organizing trans- port routes is to minimize specific transport costs and reduce the transport lead time [10,11,12,13]. keywords: cost; figure; fuel; fuel cost; petrol; petrol station; software; station; transport cache: ap-4152.pdf plain text: ap-4152.txt item: #887 of 1656 id: ap-4157 author: Kačalová, Mária; Pavlenko, Slavko title: STRENGHT AND DYNAMIC ANALYSIS OF A STRUCTURAL NODE LIMITING THE MULTI-OUTPUT GEAR MECHANISM date: 2017 words: 2066 flesch: 61 summary: The gear mechanism achieves high gear ratios. Keywords: double-output gear mechanism; gears; strength and dynamic analysis. keywords: analysis; contact; figure; gear; mechanism; output; stage; strength cache: ap-4157.pdf plain text: ap-4157.txt item: #888 of 1656 id: ap-416 author: Achten, H.; Jessurun, J. title: A Multi-Agent Mah Jong Playing System: Towards Real-Time Recognition of Graphic Units in Graphic Representations date: 2003 words: 4473 flesch: 61 summary: The paper presents the tkeoretical basis ojgraphic units and multi-agents systems, Jollowed by a description ojthe multi-agent framework and its implementation. The technology we are looking at is multi-agent systems. keywords: agent; bones; design; drawing; heuristics; level; mah; multi; system; units; vol cache: ap-416.pdf plain text: ap-416.txt item: #889 of 1656 id: ap-4160 author: Pazderka, Jiří; Hájková, Eva; Jiránek, Martin title: UNDERGROUND AIR DUCT TO CONTROL RISING MOISTURE IN HISTORIC BUILDINGS: IMPROVED DESIGN AND ITS DRYING EFFICIENCY date: 2017 words: 4485 flesch: 56 summary: Air ducts, which are situated in the ground, are most often designed as a masonry structure in combination with a traditional concrete slab and concrete screed (Fig. 2). Air duct (concrete blocks) installed into a historic masonry building. keywords: air; air duct; blocks; building; concrete; duct; masonry; moisture; water cache: ap-4160.pdf plain text: ap-4160.txt item: #890 of 1656 id: ap-4163 author: Yusuf, Taofeek Ayotunde title: CHARACTERIZATION OF SELECTED PROPERTIES OF COMPOSITES OF WASTE PAPER WITH UNTREATED BAMBOO STEM FIBRE AND RICE HUSK date: 2017 words: 6931 flesch: 56 summary: In this study, selected properties of composite samples, produced from waste paper in equal mix-ratio with rice husk and bamboo stem fibres (BSF) separately without chemical pre-treatment using cassava starch as a binder, were characterized. Keywords: biocomposite properties; waste paper; bamboo stem fibre; rice husk. keywords: bamboo; composites; fibres; husk; paper; properties; rice; samples; strength; thickness; waste; water cache: ap-4163.pdf plain text: ap-4163.txt item: #891 of 1656 id: ap-4165 author: Mihalev, Mihail Stoyanov title: TRANSITION METAL OXIDES AS MATERIALS FOR ADDITIVE LASER MARKING ON STAINLESS STEEL date: 2017 words: 4540 flesch: 59 summary: Morphology of a “dot” sample — molybdenum trioxide The most typical pattern is presented in Figure 3, it was obtained at CO2 laser irradiation times between 10 and 100ms, being relevant to the technology pro- cesses of laser marking. The developed model is in concordance with the convec- tive model [24], describing the characteristic surface rippling of laser re-melted surfaces. keywords: beam; co2; coating; dot; figure; laser; marking; materials; moo3; oxides; raman; sample; wo3 cache: ap-4165.pdf plain text: ap-4165.txt item: #892 of 1656 id: ap-4167 author: Peciar, Peter; Macho, Oliver; Eckert, Maroš; Fekete, Roman; Kotora, Peter; Juriga, Martin; Kabát, Juraj; Gabrišová, Ľudmila; Peciar, Marián title: DESIGN OF PARTICULATE MATERIAL COMPACTOR ROLLS DIAMETER date: 2017 words: 4483 flesch: 58 summary: Keywords: particulate material; compaction; compactor; rolls diameter; experimental measurements; fertilizer. Compaction of particulate material. keywords: angle; compactor; material; nip; pressure; rolls; stress cache: ap-4167.pdf plain text: ap-4167.txt item: #893 of 1656 id: ap-4173 author: Prokšová Zuská, Lenka; Kabrhel, Michal title: A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK date: 2017 words: 4884 flesch: 54 summary: The physical parameters of air were continuously measured: the air temperature, globe temperature, air velocity, radiant temperature, relative humidity, stereotemperature and physiological parameters. Globe Stereothermometer Measurement Measured physical parameters were ta, va, the relative humidity and radiant temperature measured in the direction of the radiation trA and on the opposite side trB. Those values were measured by Indoor Climate Analyzer type 1213, Brüel and Kjaer. keywords: conditions; environment; globe; non; radiant; temperature cache: ap-4173.pdf plain text: ap-4173.txt item: #894 of 1656 id: ap-4175 author: Vonka, Martin; Kořínek, Robert title: CHIMNEY RESERVOIRS: UNIQUE TECHNICAL STRUCTURES FROM THE FIRST HALF OF THE 20TH CENTURY IN THE CZECH REPUBLIC date: 2018 words: 6470 flesch: 65 summary: This article outlines the origin and evolution of different types of chimney reservoirs and describes the structural and technological designs used for such structures on the territory of what is now known as the Czech Republic. Not much has been published on the technical de- signs of chimney reservoirs in Czech literature – in 1906, a brief introduction to chimney water towers was written by František Klokner, a populariser of chimneys and future rector of the Czech Technical Uni- versity in Prague keywords: chimney; chimney reservoirs; concrete; czech; factory; figure; pipe; prague; republic; shaft; steel; structure; tank; water cache: ap-4175.pdf plain text: ap-4175.txt item: #895 of 1656 id: ap-4179 author: Strnadová, Gabriela; Hanuš, Vlastimil; Kahoun, David; Semerák, Petr; Tříska, Jan title: RETRACTED: POSSIBILITY OF MONITORING OF PAHs DISTRIBUTION IN THE VERTICAL PROFILE AT THE BACKGROUND METEOROLOGICAL STATION KREŠÍN date: 2017 words: 13082 flesch: 70 summary: Concentration of individual PAHs on the ground, filters from mercury analyser (ng/m3) CONCLUSION Measurements of PAHs concentrations from December 17, 2014 to December 9, 2015 at Křešín near Pacov meteorological background station have produced unique results. 6: The sum of heavier PAHs concentration (4-6ring) for each height. keywords: air; analyser; atmospheric; concentration; doi:10.1016; figure; filters; height; hydrocarbons; loq; monitoring; ozone; pahs; period; polycyclic; sampling; tower; urban cache: ap-4179.pdf plain text: ap-4179.txt item: #896 of 1656 id: ap-418 author: Fořt, I.; Kreibich, V.; Marek, J. title: Study of Wear of Pitched Blade Impellers in a Solid-Liquid Suspension date: 2003 words: 2877 flesch: 65 summary: 3 Results and discussion Four series of experiments were evaluated: an investiga- tion of pitched blade impellers with pitch angle cr' = 30 for both the larger and the smaller pilot plant systems and also pitched blade impellers with pitch angle a=45, again, for the larger and smaller pilot plant systems' During the erosion process of the pitched blade impeller caused by solid particles of silicious sand, its metal plane blades change shape mainly around the leading edge Marek A study was made oftke erosion wear ofthe blades ofpitched blade impellers in a suspension ofsilicious sand (Cv= 5 %, d keywords: angle; blade; erosion; impeller; parameter; wear cache: ap-418.pdf plain text: ap-418.txt item: #897 of 1656 id: ap-4182 author: Wagner, Marcel; Dangel, Felix; Cartarius, Holger; Main, Jörg; Wunner, Günter title: NUMERICAL CALCULATION OF THE COMPLEX BERRY PHASE IN NON-HERMITIAN SYSTEMS date: 2017 words: 4997 flesch: 66 summary: In this framework we develop a general numerical gauge smoothing procedure to calculate complex Berry phases from the biorthogonal basis of the system’s non-Hermitian Hamiltonian. Keywords: complex Berry phase; PT symmetry; gauge smoothing. keywords: berry; complex; hermitian; parameter; phase; phys; space; states cache: ap-4182.pdf plain text: ap-4182.txt item: #898 of 1656 id: ap-4185 author: Strunina, Svitlana; Hozman, Jiri; Ostadal, Petr title: RELATION BETWEEN LEFT VENTRICULAR UNLOADING DURING ECMO AND DRAINAGE CATHETER SIZE ASSESSED BY MATHEMATICAL MODELING date: 2017 words: 3330 flesch: 58 summary: The impact of various catheter sizes (from 5Fr to 10Fr) and extracorporeal blood flow values (from 1L/min to 5L/min) were investigated. Volume rate value withdraw from LV during VA ECMO in Modelica. 4. keywords: blood; catheter; drainage; ecmo; extracorporeal; flow; value; volume cache: ap-4185.pdf plain text: ap-4185.txt item: #899 of 1656 id: ap-420 author: Jiřičková, M.; Černý, R.; Rovnaníková, P. title: Measurement of Moisture Storage Parameters of Building Materials date: 2003 words: 2733 flesch: 57 summary: On the other hand, measur€menrs of moisture retention curves for building materials are still relatively rare (e.g., t3l, t4l), in contrast to the numerous measurements on soils (see, e.g., [5] for an overuiew). However, in many building-physics laboratories only the hygroscopic parts of moisture storage functions - the sorption isotherms - are commonly measured. keywords: building; calcium; fig; material; moisture; parameters; pressure; retention; silicate; storage cache: ap-420.pdf plain text: ap-420.txt item: #900 of 1656 id: ap-422 author: Beran, V.; Frková, J. title: Significance of SMEs in the Czech Economy and Supporting SMEs as an Instrument of the Regional Development date: 2003 words: 4457 flesch: 53 summary: In spite of the lower value added per worker created by SMEs, the welfare attributes of small enrrepreneurship make SMEs importanr for local and regional development. No. 2/2003 Significance of SMEs in the Czech Economy and Supporting SMEs as an Instrument of the Regional Development V. Beran, J. Frková SMEs (Small and Medium Enterprises) are important segments of the economic landscape ofthe Cuclz Republic, since halfofeconomic production is attributable to SMEs (52.85 %). keywords: czech; development; economy; enterprises; industry; market; production; republic; share; smes; table; value cache: ap-422.pdf plain text: ap-422.txt item: #901 of 1656 id: ap-424 author: Vognar, M.; Šimáně, Č.; Chvátil, D. title: Twenty Years of Microtron Laboratory Activities at CTU in Prague date: 2003 words: 4337 flesch: 58 summary: The arrangement enabled radiation beams with a high quality index (Fig. 7) to be obtained, and homogeneous 10 x IOcm2 photon and eIec­ tron fields precise to 65 % to be generated, complying with the ICRP IAEA standards (Fíg. This r..-.6 to us an appropriate moment to summarize n,rrenty years of history of microtron laboratory activities at CTU in'prague. keywords: acta; beam; czech; dose; electron; fields; fig; gamma; laboratory; microtron; prague; production; radiation; system; vognar; vol; šimáně cache: ap-424.pdf plain text: ap-424.txt item: #902 of 1656 id: ap-426 author: Ficker, T.; Macur, J. title: A Note on Normalised Distributions of DC Partial Microdischarges date: 2003 words: 1092 flesch: 58 summary: => y' =k' -ux, (15) k'=k-lnSp, (16) similar conclusions as for exponential distribution can be drawn: in bilogarithmic systems the normalisation proce­ dure changes only the vertical position of the graph of the Pareto distribution and does not influence its functional char­ acter (slope or asymmetricity). In other words, the normalisation procedure can­ not change the results of physical processes and this fact also supports the employment of unnormalised distributions in statistical studies realised in physics and other fields ofscience and technology. keywords: distribution; interval; normalisation; pareto cache: ap-426.pdf plain text: ap-426.txt item: #903 of 1656 id: ap-428 author: Seker, S.; Aydemir, M. E.; Apaydin, G. title: A Simulation Study for Computing the Emissivity of Clouds date: 2003 words: 1706 flesch: 59 summary: No. 3/2003 A Simulation Study for Computing the Emissivity of Clouds S. Seker, M. E. Aydemir, G. Apaydin In fhis sttrdy, prnpagativn through uarious dirrriburiorc of loxy particles in clouds is investigated,. The bistatic scatlering patterns and emissiuities of uariorn $pes of clouds are cornputed for waaes of selected polarizations passr,ng through clouds with specifld sizes, shapes and distributions. keywords: cloud; cylinders; emissivity; fig; patterns; scattering cache: ap-428.pdf plain text: ap-428.txt item: #904 of 1656 id: ap-4280 author: Štorch, Vít; Nožička, Jiří title: CONTRA-ROTATING PROPELLER AERODYNAMICS SOLVED BY A 3D PANEL METHOD WITH COUPLED BOUNDARY LAYER date: 2017 words: 7829 flesch: 61 summary: Verification using single propeller wind tunnel results Based on the results obtained during recent series of measurements of model propellers in a wind tun- nel Wake behind single propeller. keywords: contra; figure; layer; method; model; panel; propeller; thrust; velocity; vortex; wake; −0.1 cache: ap-4280.pdf plain text: ap-4280.txt item: #905 of 1656 id: ap-430 author: Anderle, P.; Smrček, L.; Coton, F. N. title: Aerodynamic Design and Experimental Investigation of the Sailplane Wing Tip Devices date: 2003 words: 3201 flesch: 66 summary: l0: Wing tip model A E@H ct@tE6 the vorticity associated with the wingletAving junction does not appear as a single well defined vortex but rather as a more spread-out region of vorticity. During the o 0 For R1 type of real symmetric matrix P (S) is not simple, however here we would like to show that when the PDF does not peak at x = 0, we get highly non-linear behaviour of P (S) near S = 0 Keywords: real symmetric matrices; Wigner surmise. keywords: distribution; matrices cache: ap-4481.pdf plain text: ap-4481.txt item: #924 of 1656 id: ap-450 author: Hasal, P.; Fořt, I.; Kratěna, J. title: The Tangential Force Affecting the Radial Baffles in a Stirred Vessel: Analysis of the Macro-instability Related Component date: 2003 words: 5209 flesch: 61 summary: [17] ob- served that higher MI frequency (about l0 7o of ltl) occurs at low impeller Reynolds number values, and that the lower 50 frequency. At each target position and relative impeller off-bottom clearance ClH, the value of Ren, was varied over the entire attainable inten'al. keywords: component; data; flow; force; frequency; impeller; instability; liquid; macro; mixing; values; vessel; vol cache: ap-450.pdf plain text: ap-450.txt item: #925 of 1656 id: ap-452 author: Vaňura, T.; Štěpánek, P.; Švaříčková, I.; Adámek, J. title: Long-term Test Arrangement for Externally Strengthened Reinforced Concrete Elements date: 2003 words: 1522 flesch: 68 summary: 1: Time dependent deflections ofthree panels strengthened with a glass-fiber mat [2] under different load magnitudes The load position of two solitary forces was in one third of the span of each panel, but the strength of the load was dif- ferent for each of them. KEuords: carbon fiber (CFRP), glass fiber GERP), extemal strengtlrcning, epoxy-resin creep, test arrangement. keywords: concrete; epoxy; load; panels; strengthening; tests cache: ap-452.pdf plain text: ap-452.txt item: #926 of 1656 id: ap-4526 author: Adamčík, Martin; Svěrák, Tomáš; Peciar, Peter title: PARAMETERS EFFECTING FORCED VORTEX FORMATION IN BLADE PASSAGEWAY OF DYNAMIC AIR CLASSIFIER date: 2017 words: 6449 flesch: 54 summary: Keywords: rotor air classifier, forced vortex, blade passageway, particle image velocimetry (PIV), numerical simulation CFD. This may be attributed to the difficulties related to the PIV implementation into rotor air classifier. keywords: air; air classifier; blade; classifier; classifier rotor; fan; figure; flow; particles; passageway; radial; rotor; velocities; velocity; vortex cache: ap-4526.pdf plain text: ap-4526.txt item: #927 of 1656 id: ap-454 author: Calonius, O.; Saikko, V. title: Analysis of Relative Motion between Femoral Head and Acetabular Cup and Advances in Computation of the Wear Factor for the Prosthetic Hip Joint date: 2003 words: 8967 flesch: 60 summary: Force track shown with thick line. whereas in the HUT:3, it was 3.8 (elliptical force track). keywords: brm; contact; cup; force; force track; gait; head; hip; joint; load; motion; pressure; relative; simulator; slide; slide track; sliding; surface; track; vol; wear cache: ap-454.pdf plain text: ap-454.txt item: #928 of 1656 id: ap-4546 author: Solnař, Stanislav; Dostál, Martin; Petera, Karel; Jirout, Tomáš title: APPLICATION OF THE TEMPERATURE OSCILLATION METHOD IN HEAT TRANSFER MEASUREMENTS AT THE WALL OF AN AGITATED VESSEL date: 2018 words: 7278 flesch: 62 summary: Experimental methods based on measuring vari- ous thermal quantities (heat fluxes, heat flow rates, temperatures) are the ones most frequently used for determining values of heat transfer coefficients. Nowadays, numerical methods implemented in many CFD packages solving momentum and heat transport equations are also fre- quently used to determine heat transfer coefficients in laminar as well as turbulent flow regimes. keywords: coefficients; figure; flow; heat; heat transfer; impeller; method; number; nusselt; reynolds; surface; temperature; turbine; vessel; wall cache: ap-4546.pdf plain text: ap-4546.txt item: #929 of 1656 id: ap-4549 author: Parente, Claudio; Pepe, Massimiliano title: BATHYMETRY FROM WORLDVIEW-3 SATELLITE DATA USING RADIOMETRIC BAND RATIO date: 2018 words: 5163 flesch: 57 summary: In addition, in particular places where it is difficult to carry out the survey by classic methods, the bathymetry from satellite data can be the only mode to obtain the depth of the backdrop. Using WV-3 satellite data and the Stumpf method, the paper intends to investigate the possibility of obtaining bathymetric data in a specific area where the water is not particularly clear. keywords: area; band; bathymetry; data; depth; imagery; method; ratio; remote; satellite; sensing; values; water; worldview-3 cache: ap-4549.pdf plain text: ap-4549.txt item: #930 of 1656 id: ap-4553 author: Kavuličová, Jana; Mražíková, Anna; Velgosová, Oksana; Ivánová, Dana; Kubovčíková, Martina title: STABILITY OF SYNTHESIZED SILVER NANOPARTICLES IN CITRATE AND MIXED GELATIN/CITRATE SOLUTION date: 2018 words: 3881 flesch: 54 summary: Average values of AgNPs diameter determined by DLS method and from TEM images, PDI and Z-potencial of AgNPs colloids on 7th and 118th day. The attachment of the stabilizer to AgNPs surface is probably related to their interaction strength keywords: agnps; citrate; day; gelatin; nanoparticles; silver; size; stability; synthesis cache: ap-4553.pdf plain text: ap-4553.txt item: #931 of 1656 id: ap-456 author: Bartušek, K.; Gescheidtová, E. title: A Magnetic Resonance Measurement Technique for Rapidly Switched Gradient Magnetic Fields in a Magnetic Resonance Tomograph date: 2003 words: 3719 flesch: 61 summary: Digitalised MR signal f(t) Instantaneous fiequency of MR signal O(t) Instantaneous phase of MR signal T2 Spin relaxation time TE Echo time - time of the spin echo creation 2 Introduction The quality of the gradient magnetic fields is an im- portant property of devices exploiting the phenomenon of magnetic resonance for imaging or localised spectroscopy. A comparison of the G, gradient time decay characterisrics obtained by the I[ IFSE, and IFSES methods is presented in Fig. keywords: echo; field; gradient; magnetic; method; mr signal; pulse; signal; time cache: ap-456.pdf plain text: ap-456.txt item: #932 of 1656 id: ap-4566 author: Saplachidi, Alexandra; Vougioukas, Emmanouil title: COMPARISON OF ACTUAL GROUND SETTLEMENTS IN TUNNELLING EXCAVATION TO MODEL PREDICTIONS date: 2018 words: 5398 flesch: 56 summary: Keywords: lifelines; tunnel excavations; ground settlements; data monitoring; finite element method. In CH0+343, an increase of surface settlements which locally reached the point of 25mm was mani- fested. keywords: ch0 +; excavation; ground; line; rock; section; settlements; support; surface; tunnel cache: ap-4566.pdf plain text: ap-4566.txt item: #933 of 1656 id: ap-4576 author: Tang, Chongchong; Grosse, Mirco Karl; Trtik, Pavel; Steinbrück, Martin; Stüber, Michael; Seifert, Hans Jürgen title: H2 PERMEATION BEHAVIOR OF Cr2AlC AND Ti2AlC MAX PHASE COATED ZIRCALOY-4 BY NEUTRON RADIOGRAPHY date: 2018 words: 4824 flesch: 54 summary: Keywords: MAX phase coating; Zircaloy; ATF; hydrogen permeation; neutron radiography. Neutron radiography images of the reference uncoated Zircaloy-4 specimens (a) before hydrogen loading and (b) after hydrogen permeation at 700 °C for 1 h (hydrogen dark). keywords: coatings; cr2alc; figure; hydrogen; max; neutron; permeation; phase; radiography; ti2alc cache: ap-4576.pdf plain text: ap-4576.txt item: #934 of 1656 id: ap-458 author: Bíla, J. title: To Whom Belongs Conceptual Design? date: 2003 words: 5385 flesch: 55 summary: No. 412009 To Whom Belongs Conceptual Design? J. Bfla Th.e lieLd of Conceptual lytlry is aery alfue and is rapidly deteloping. 2 Semiotics, formal logic and evolutionary models The outcome of the process of Conceptual Design (in technological fields) is usually undersrood tobe a scheme. keywords: cdp; concepts; design; emergence; engineering; knowledge; means; modelling; ontologies; process; research; space; support; system; uml; vol cache: ap-458.pdf plain text: ap-458.txt item: #935 of 1656 id: ap-4586 author: Ouamara, Daoud; Dubas, Frédéric; Benallal, Mohamed Nadjib; Randi, Sid Ali; Espanet, Christophe title: AUTOMATIC WINDING GENERATION USING MATRIX REPRESENTATION - ANFRACTUS TOOL 1.0 date: 2018 words: 5832 flesch: 62 summary: In order to achieve the desired performances for a given ap- plication, several types of windings are developed and studied, viz. [4–10]: full-pitch winding, short- pitch (or chorded) winding, long-pitch winding, con- centrated around teeth winding, distributed winding, wave winding, winding with one-two speeds, winding with dead coils, basket windings, skein winding, flat loop non-overlapped winding, flat loop overlapped winding (chain winding), skew winding, diamond winding, involute coil winding [4], toroidal winding keywords: coils; doi:10.1109; figure; ieee; layers; machines; matrix; number; slots; winding cache: ap-4586.pdf plain text: ap-4586.txt item: #936 of 1656 id: ap-4587 author: Masáková, Zuzana; Mazáč, Jan title: ON SELF-SIMILARITIES OF CUT-AND-PROJECT SETS date: 2017 words: 9586 flesch: 76 summary: Using this, and the expression for ω4 in terms of lower powers of ω, namely ω4 = −1− ω − ω2 − ω3, we get from the remaining rows the following relations between the integer coefficients a, . . . ω2 − ω4 ω3 − ω4 1− ω2 ω3 − ω2 ω − ω2 ω4 − ω2 1− ω3 ω2 − ω3 ω4 − ω3 ω − ω3  . keywords: cos; cut; matrix; project; self; sin cache: ap-4587.pdf plain text: ap-4587.txt item: #937 of 1656 id: ap-4589 author: Ohya, Satoshi title: ALGEBRAIC DESCRIPTION OF SHAPE INVARIANCE REVISITED date: 2017 words: 4619 flesch: 69 summary: d dx − j x + g j . For fixed j ∈ { 1 2 , 3 2 , · · · , νmax}, the energy eigenvalues and eigenfunctions are given by En = −(j + n)2 − g2 (j + n)2 , n ∈ {0, 1, · · · , N}, (4.11) and ψEn,j(x) ∝ A−(j)A−(j + 1) · · ·A−(j + n− 1)ψEn,j+n(x), (4.12) where N = max{n ∈ Z≥0 : j + n < √ g} = νmax − j and ψEn,j+n(x) ∝ (sinh x)j+n exp(− g j+nx). keywords: kepler cache: ap-4589.pdf plain text: ap-4589.txt item: #938 of 1656 id: ap-4598 author: Maamache, Mustapha title: NON-UNITARY TRANSFORMATION OF QUANTUM TIME-DEPENDENT NON-HERMITIAN SYSTEMS date: 2017 words: 3935 flesch: 71 summary: Conclusion It has been established [21–23] that the general frame-work for a description of unitary time evolution for time-dependent non-Hermitian Hamiltonians can be based on the use of a time-dependent metric operator. We provide a new perspective on non-Hermitian evolution in quantum mechanics by emphasizing the same method as in the Hermitian quantum evolution. keywords: equation; evolution; hamiltonian; hermitian; phys; quantum; time cache: ap-4598.pdf plain text: ap-4598.txt item: #939 of 1656 id: ap-460 author: Green, G. title: Design Evaluation: Decomposition and State-space Analysis date: 2003 words: 3259 flesch: 54 summary: 2 Decomposition of design Decomposition of design is well established in practice as a means of trying to simplifi the complexity of design activity [4]. Only through computer imple- mentation will the desired time reduction be achieved rvhilst being able to process data associated with a large number of design concepts and their associated set ofdesign characteris- tics. keywords: approach; concept; decomposition; design; evaluation; probability; process; state cache: ap-460.pdf plain text: ap-460.txt item: #940 of 1656 id: ap-4603 author: Fassari, Silvestro; Gadella, Manuel; Nieto, Luis Miguel; Rinaldi, Fabio title: ON THE SPECTRUM OF THE ONE-DIMENSIONAL SCHRÖDINGER HAMILTONIAN PERTURBED BY AN ATTRACTIVE GAUSSIAN POTENTIAL date: 2017 words: 3139 flesch: 61 summary: It is worth pointing out that the latter quantity is nothing else but the limit, as ε→ 0+ of the trace class norm of Baε , since ‖Baε ‖1 = 1√ 2π ∫ +∞ −∞ e−p 2 sinh p2 p2 + ε2 dp = √ π 23ε2 ( 1− e2ε2 erfc( √ 2ε) ) , (20) which ensures the convergence in the norm topology of trace class operators, as a consequence of a well-known theorem on operators belonging not only to the trace class T1 but to any ideal Tp (see [11]). Keywords: Schrödinger equation; Gaussian potential; Birman-Schwinger method; trace class operators; Fredholm determinant. keywords: operator; state cache: ap-4603.pdf plain text: ap-4603.txt item: #941 of 1656 id: ap-4605 author: Campoamor-Stursberg, Rutwig title: FUNCTIONAL REALIZATIONS OF LIE ALGEBRAS AS NOETHER POINT SYMMETRIES OF SYSTEMS date: 2017 words: 4699 flesch: 64 summary: 378 http://dx.doi.org/10.1007/BF01177044 http://dx.doi.org/10.1080/16073606.1988.9631946 http://dx.doi.org/10.1016/j.cnsns.2014.01.006 http://dx.doi.org/10.1016/S0022-247X(03)00147-1 http://dx.doi.org/10.1016/j.physletb.2007.07.012 http://dx.doi.org/10.1063/1.4974264 http://dx.doi.org/10.1007/s0070 http://dx.doi.org/10.1063/1.4998715 http://dx.doi.org/10.1063/1.527118 http://dx.doi.org/10.1016/j.cnsns.2016.01.015 Acta Polytechnica 57(6):373–378, 2017 1 Introduction 2 Lie and Noether point symmetries of systems 2.1 Perturbations that preserve symmetry subalgebras 3 Functional realizations of sl(2,R) as Noether symmetry algebra 3.1 Separable kinetic Lagrangians 3.2 Systems with fixed symmetry 4 Time-dependent Lagrangians 5 Conclusions Acknowledgements References Functional realizations of Lie algebras are applied to the problem of determining Lie and Noether point symmetries of Lagrangian systems in N dimensions, particularly in the plane. keywords: algebra; lie; noether; point; symmetries; symmetry; systems cache: ap-4605.pdf plain text: ap-4605.txt item: #942 of 1656 id: ap-4607 author: Kotvytskiy, Albert; Bronza, Semen; Shablenko, Vladimir title: THE ANALYSIS OF IMAGES IN N-POINT GRAVITATIONAL LENS BY METHODS OF ALGEBRAIC GEOMETRY date: 2017 words: 6546 flesch: 79 summary: − x2 2y1 − x1 = 0, x2 1x2 + x3 2 − x2 1y2 − x2 2y2 − x2 = 0. (9) We calculate the result R1 by the variable x1 for which we represent the equation in lexicographic form{ x3 1 keywords: lens; point; set; system cache: ap-4607.pdf plain text: ap-4607.txt item: #943 of 1656 id: ap-4608 author: Joglekar, Yogesh N; Vemuri, Gautam; Wilkey, Andrew title: LAMBERT FUNCTION METHODs TO STUDY LASER DYNAMICS WITH TIME-DELAYED FEEDBACK date: 2017 words: 3640 flesch: 58 summary: Since the intensity at very short times grows exponentially with the product of the differential gain coefficient ζ and N(t), and because the steady-state value of N(t) is a function of the pumping P , one can manipulate these two quantities to slow down the exponential growth of laser intensity and thereby enhance the time window in which both conditions are simultaneously met. In this manuscript, we show that under some conditions, the rate equations model that is used to model semiconductor lasers with feedback can be analytically solved by using the Lambert W -function. keywords: carrier; equations; field; inversion; lambert; laser; time cache: ap-4608.pdf plain text: ap-4608.txt item: #944 of 1656 id: ap-4610 author: Kovács, József; Lévai, Géza title: ON THE COMMON LIMIT OF THE PT-SYMMETRIC ROSEN–MORSE II AND FINITE SQUARE WELL POTENTIALS date: 2017 words: 4163 flesch: 67 summary: The PT -symmetrization of shape-invariant [5, 6, 8] and of the more general Natanzon-class potentials [7] that are solved in terms of the (confluent) hypergeometric function [9] revealed that the characteristic features of PT -symmetric potentials can conveniently be studied using the exact analytical solutions of these potentials. Keywords: PT -symmetric potential; bound states; scattering; Dirac-δ limit. keywords: -symmetric; energy; phys; potential; real cache: ap-4610.pdf plain text: ap-4610.txt item: #945 of 1656 id: ap-4612 author: Celeghini, Enrico; Gadella, Manuel; del Olmo, Mariano A title: LIE ALGEBRA REPRESENTATIONS AND RIGGED HILBERT SPACES: THE SO(2) CASE date: 2017 words: 3903 flesch: 73 summary: Since this theorem is only valid for |f〉, |g〉 ∈ Φ, we conclude that (12) is only valid for |f〉 ∈ Φ from a strictly rigorous point of view. Since R(θ) is unitary on L2[0, 2π] for any value of θ then R(θ) is also unitary on H due to the unitarity of S. Unitary operators leaving Φ invariant can be ex- tended to Φ× by the duality formula (1), i.e., 〈R(θ)F |f〉 = 〈F |R(−θ)f〉, ∀ |f〉 ∈ Φ, ∀F ∈ Φ×. Therefore, 〈R(θ)φ|f〉 keywords: hilbert; m=−∞; rhs cache: ap-4612.pdf plain text: ap-4612.txt item: #946 of 1656 id: ap-4615 author: Semoradova, Iveta title: CRYPTO-HERMITIAN APPROACH TO THE KLEIN–GORDON EQUATION date: 2017 words: 2909 flesch: 69 summary: Free Klein–Gordon equation In case of free Klein–Gordon equation operator K = −∆ +m2 (16) acting on H = L2(R3) is positive and Hermitian. doi:10.1007/s10582-006-0395-9. 466 http://dx.doi.org/10.1142/S0217751X06028813 http://dx.doi.org/10.1088/0305-4470/37/40/016 http://dx.doi.org/10.1007/s10582-005-0127-6 http://dx.doi.org/10.1023/B:CJOP.0000044017.33267.58 http://dx.doi.org/10.1103/RevModPhys.30.24 http://dx.doi.org/10.1103/PhysRev.102.568 http://dx.doi.org/10.1142/S0219887810004816 http://dx.doi.org/10.1088/0034-4885/70/6/R03 http://dx.doi.org/10.1016/j.aop.2011.12.009 http://dx.doi.org/10.1007/s10582-006-0395-9 Acta Polytechnica 57(6):462–466, 2017 1 Introduction 2 Klein-Gordon equation in Schrödinger form 2.1 Eigenvalues 2.2 Free Klein–Gordon equation 3 Crypto-Hermitian approach 3.1 Computation of the metric 3.2 The discrete case 4 Conclusions Acknowledgements References keywords: equation; gordon; hermitian; klein; operator; phys; quantum cache: ap-4615.pdf plain text: ap-4615.txt item: #947 of 1656 id: ap-462 author: Jarský, Č. title: On Planning and Managing the Preservation of Historical Buildings date: 2003 words: 5234 flesch: 48 summary: On the basis of typical network diagrams and a database of construction processes, a model of the actual erection of a building and a model of its maintenance and re- construction can be automatically created. The technological standard (technological analysis sheet or programme) determines the technological structure of the production process (the sequence of construction processes, volume of production, labour and cost consumption, number and type ofworkers or machines, etc.). keywords: building; building process; construction; diagram; model; network; process; processes; project; quality; technology; time cache: ap-462.pdf plain text: ap-462.txt item: #948 of 1656 id: ap-464 author: Jelínek, I. title: Modal Logic - a Tool for Design Process Formalisation date: 2003 words: 3977 flesch: 57 summary: Let us introduce the frame of worlds [1] (structure [14]) formally as an ordered couple: � �F W R� , , where W set of worlds, R R W W� � , binary relation (accessibility relation). The model (P-model) within the frame � �F W R� , will be then called a triad: � �M W R V� , , where V: P � 2W. V maps each atomic formula p P� to the subset � �V p W� and therefore represents all worlds w W� in which p is valid. keywords: design; logic; modal; � � cache: ap-464.pdf plain text: ap-464.txt item: #949 of 1656 id: ap-466 author: Makovička, D.; Král, J.; Makovička, D. title: Verification of the Wind Response of a Stack Structure date: 2003 words: 3829 flesch: 53 summary: The probable magnitude of the response of the structure to wind effects under the design load could then be estimated by multiplying the ascertained response by the ratio of the squares of the design and measured wind velocities in accordance with the above considerations. The measured vibration histories in terms of ac- celeration, velocities and relative deformations, together with the measurements of wind velocity and direction, were evalu- ated by a computer and compared with the response values assumed in the design, with the natural frequencies of the GRP extension according to the designer’s computation and with the frequencies of the dominant vibration sources – ma- jor machines in the environs of the stack. keywords: frequencies; response; steel; structure; wind; wind velocity cache: ap-466.pdf plain text: ap-466.txt item: #950 of 1656 id: ap-4664 author: Dvořáček, Filip title: SURVEY OF SELECTED PROCEDURES FOR THE INDIRECT DETERMINATION OF THE GROUP REFRACTIVE INDEX OF AIR date: 2018 words: 5592 flesch: 65 summary: Keywords: group refractive index of air; electronic distance measurement; first velocity correction; laser tracker; Leica AT401. The article does not cover other approaches such as a multi-wavelength interferometry, frequency comb lasers, femto-second lasers etc. which can achieve direct measurement of refractive indices [2]. keywords: air; ciddor; equations; group; index; leica; ppm; procedures; refractive cache: ap-4664.pdf plain text: ap-4664.txt item: #951 of 1656 id: ap-4668 author: Ayeleso, Ayokunle Oluwaseun; Kahn, Mohamed T. E. title: EXPERIMENTAL CHARACTERIZATION OF A MAGNETOHYDRODYNAMIC POWER GENERATOR UNDER DC ARC PLASMA date: 2018 words: 3028 flesch: 52 summary: Measured power from the MHD generator under DC arc plasma experiment. The systemic offset voltage measured without DC arc plasma. keywords: arc; figure; generator; mhd; plasma; power; voltage cache: ap-4668.pdf plain text: ap-4668.txt item: #952 of 1656 id: ap-468 author: Titlestad, J.; Fairlie-Clarke, T.; Davie, M.; Whittaker, A.; Grant, S. title: Experimental Evaluation of Mountain Bike Suspension Systems date: 2003 words: 4827 flesch: 62 summary: SU bicycles perform well in laboratory tests, but HT bicycles seem to have the advantage in time trials and races. The great majority of competition mountain bikes include a front sus- pension, but most professional cross-country cyclists do not ride full suspension bicycles [1]. keywords: bicycle; bumps; rear; results; roller; suspension; suspension system; system; tests; wheel cache: ap-468.pdf plain text: ap-468.txt item: #953 of 1656 id: ap-4680 author: Horovčák, Pavel; Terpák, Ján title: THERMOCHEMICAL CALCULATIONS USING SERVICEORIENTED ARCHITECTURE IN THE WEB SERVICE FORM date: 2018 words: 7816 flesch: 45 summary: Keywords: thermochemical calculation; chemical reaction; service-oriented architecture; web service. Web services and cloud computing keywords: application; calculations; chemical; chemical reaction; equilibrium; error; form; functions; language; reaction; service; temperature; web; web service cache: ap-4680.pdf plain text: ap-4680.txt item: #954 of 1656 id: ap-4685 author: Mohammadi Farhadi, Rahman; Kortunov, Vyacheslav; Molchanov, Andrii; Solianyk, Tatiana title: ESTIMATION OF THE LATERAL AERODYNAMIC COEFFICIENTS FOR SKYWALKER X8 FLYING WING FROM REAL FLIGHT-TEST DATA date: 2018 words: 9459 flesch: 55 summary: Estimated aerodynamic parameters are compared with the theoretically calculated coefficients of the UAV, moreover, the dynamic model is validated with additional flight-test data and small covariances of the estimated parameters. Output signals for mathematical models with estimated parameters of all of the approaches are given in Figures 10–14. keywords: case; coefficients; data; estimation; flight; identification; linearity; lsm; model; oem; optimization; parameters; sx8fw; uav; values; wind cache: ap-4685.pdf plain text: ap-4685.txt item: #955 of 1656 id: ap-4695 author: Fekete, Roman; Žáková, Terézia; Gabrišová, Ľudmila; Kotora, Peter; Peciar, Peter; Gahurová, Dominika; Slaninová, Miroslava title: OPTIMALIZATION OF PHOTOREACTOR GEOMETRY FOR THE CULTIVATION OF CHLAMYDOMONAS REINHARDTII date: 2018 words: 8011 flesch: 57 summary: Investigation of the influence of the geometrical similarity on algae growth rate: a) after filling the cylinders with the culture media with the initial concentration of algae 24. An optimal ratio between biomass growth rate and its gross biomass yield as a function of the photoreactor geometry is searched. keywords: algae; biomass; conditions; cultivation; culture; experiments; figure; growth; growth rate; light; medium; photoreactor; vessels; volume; yield cache: ap-4695.pdf plain text: ap-4695.txt item: #956 of 1656 id: ap-4699 author: Legerský, Jan title: MINIMAL NON-INTEGER ALPHABETS ALLOWING PARALLEL ADDITION date: 2018 words: 6147 flesch: 74 summary: Parallel addition, i.e., addition with limited carry propagation has been so far studied for complex bases and integer alphabets. We give necessary conditions on the alphabet allowing parallel addition. keywords: a[β; addition; integer; parallel; z[β cache: ap-4699.pdf plain text: ap-4699.txt item: #957 of 1656 id: ap-470 author: Cho, H.; Oh, B.; Jo, C.; Lee, K. title: Process Design for Hot Forging of Asymmetric to Symmetric Rib-web Shaped Steel date: 2003 words: 2041 flesch: 66 summary: There- fore, optimal die design is necessary in order to avoid an increase in the forming load. [N/mm] [N/mm] Fig. 9: Impressed load per unit length of the side and top die: a) side die, b) top die Fig. keywords: die; fig; forging; process; stage cache: ap-470.pdf plain text: ap-470.txt item: #958 of 1656 id: ap-4701 author: Hůlková, Martina; Pavelka, Karel; Matoušková, Eva title: AUTOMATIC CLASSIFICATION OF POINT CLOUDS FOR HIGHWAY DOCUMENTATION date: 2018 words: 3474 flesch: 59 summary: The crucial part of the roadway datasets processing, as well as in many other applications, is the extraction of objects of interest from point clouds. Despite the fact that the concept of the method for overall structure recognition from mobile laser scanned point clouds was presented in [2], most of the later presented works still focuses on the detection of a sole object type. keywords: classification; cloud; image; method; objects; point; raster; terrain cache: ap-4701.pdf plain text: ap-4701.txt item: #959 of 1656 id: ap-4702 author: Mašek, Zdeněk; Diblikova, Linda title: HYDROPHOBIC IMPREGNATION OF GEOPOLYMER COMPOSITE BY ETHOXYSILANES date: 2018 words: 3491 flesch: 55 summary: 188 http://dx.doi.org/10.5923/j.textile.20150404.03 http://dx.doi.org/10.1016/j.porgcoat.2013.03.018 http://dx.doi.org/10.1023/A:1022627926243 http://dx.doi.org/10.1111/j.1551-2916.2004.01782.x http://dx.doi.org/10.1016/j.apsusc.2005.12.020 http://dx.doi.org/10.1016/j.tsf.2005.12.245 http://dx.doi.org/10.1039/C7RA04863G Acta Polytechnica 58(3):184–188, 2018 1 Introduction 2 Materials and methods 2.1 Preparation of geopolymer resin and composite samples 2.2 Preparation of hydrophobic solutions and impregnation of samples 2.3 Testing of hydrophobic agents' effectivity 3 Results and discussion 3.1 Effect of treatments on contact angle and storage modulus 3.2 Change of composites properties due to water uptake and sorption of water vapor 4 Conclusion Acknowledgements References Solutions C and F were synthesized based on a procedure for the binder of zinc-silicate paint [11]. keywords: composite; geopolymer; hydrophobic; impregnation; samples; solution; surface; water cache: ap-4702.pdf plain text: ap-4702.txt item: #960 of 1656 id: ap-4708 author: Krupička, Jan; Picek, Tomáš; Zrostlík, Štěpán title: REDUCTION OF UNCERTAINTIES IN LASER STRIPE MEASUREMENT OF SOLID PARTICLES CONCENTRATION date: 2018 words: 4635 flesch: 55 summary: Keywords: laser stripe measurement; coarse particle concentration; solid fraction measurement; fluidization cell; brightness threshold. Relation between threshold brightness Bth and concentration c evaluated from LSM measurement. keywords: brightness; bth; concentration; figure; laser; measurement; position; wall cache: ap-4708.pdf plain text: ap-4708.txt item: #961 of 1656 id: ap-4711 author: Málek, Jaroslav; Hnilica, František; Bartáková, Sonia; Míka, Patrik; Veselý, Jaroslav title: THE EFFECT OF DIFFERENT FORMS OF OXYGEN ON PROPERTIES OF BETA TITANIUM ALLOYS date: 2018 words: 5791 flesch: 62 summary: Titanium powder oxidation has been used for this purpose. Titanium powder oxidation has been used for this purpose. keywords: content; oxidation; oxygen; oxygen content; powder; specimens; strength; titanium; values cache: ap-4711.pdf plain text: ap-4711.txt item: #962 of 1656 id: ap-4714 author: Řehounek, Luboš; Denk, František; Jíra, Aleš title: NUMERICAL SIMULATIONS OF STATIC STRENGTH OF NOVEL DENTAL IMPLANTS date: 2018 words: 2685 flesch: 59 summary: Both implants belong to the “push-in” category of dental implants. is generally not enough space (e.g., in between two roots of adjacent teeth). All analysed implants are from the “push-in” category of dental implants. keywords: implant; ribs; stem; stress; variant cache: ap-4714.pdf plain text: ap-4714.txt item: #963 of 1656 id: ap-4716 author: Krčil, Jan; Mára, Vladimír; Krum, Stanislav; Sobotová, Jana title: THE CHARACTERIZATION OF ANODIC OXIDE LAYERS ON SELECTED BIO-COMPATIBLE TITANIUM ALLOYS date: 2018 words: 3160 flesch: 60 summary: Oxide layers on titanium alloy surfaces have an influence on bio-compatibility and corrosion resistance. In order to improve them, properties of oxide layers are examined. keywords: layer; oxide; roughness; samples; surface; thickness; ti6al4v cache: ap-4716.pdf plain text: ap-4716.txt item: #964 of 1656 id: ap-4718 author: Skalický, Michal title: APPLICATION OF CORROSION PLATES IN DRINKING WATER date: 2018 words: 4649 flesch: 58 summary: Acta Polytechnica doi:10.14311/AP.2018.58.0209 Acta Polytechnica 58(3):209–216, 2018 © Czech Technical University in Prague, 2018 available online at http://ojs.cvut.cz/ojs/index.php/ap APPLICATION OF CORROSION PLATES IN DRINKING WATER Michal Skalický∗, Pavel Buriánek Czech Technical University in Prague, Department of Sanitary and Ecological Engineering, Czech Republic ∗ corresponding author: michal.skalicky@fsv.cvut.cz Abstract. Corrosion rate evaluations according to consecutive intervals — June 25th–September 17 2013 (0–82 days) and September 17th–December 2nd 2013 (0–76 days) keywords: corrosion; corrosion rate; drinking; drinking water; evaluation; exposure; plates; rate; system; water; weight cache: ap-4718.pdf plain text: ap-4718.txt item: #965 of 1656 id: ap-472 author: Ryś, J.; Sanecki, H.; Trojnacki, A. title: Analysis of Gear Wheel-shaft Joint Characterized by Comparable Pitch Diameter and Mounting Diameter date: 2003 words: 5518 flesch: 64 summary: The forces F b( ) and �Fa ( )2 produce the resultant contact pressure at the conical surface of the joint � � � �� � p v s k k k kt b bE sE bE * sin sin cos ( ) � � � � � � � � � � � � � � �1 1 2 2 2 tg sE u u u Q 4 1 2� � � �tg � � � � , (12) where v d DmN b� ( ) . 4: Distribution of resultant contact pressure in the frictional joint loaded with the bending moment In Eqs. (17), � ��� b and � ��� t denote the products of partial fatigue factors, calculated for the considered part of the shaft in pure bending separately, and in pure torsion separately, and Sbn r , Stn r , Stn o stand for the endurance stresses in re- versed bending, reversed torsion, and one-direction torsion, respectively. keywords: d �; joint; parameter �; tg �; u �; � f; � p; � � cache: ap-472.pdf plain text: ap-472.txt item: #966 of 1656 id: ap-4720 author: Holčapek, Ondřej; Reiterman, Pavel; Konvalinka, Petr title: APPLICABILITY OF CARBON FIBRES IN REFRACTORY CEMENT COMPOSITES date: 2018 words: 5778 flesch: 57 summary: The main objective of this article is to present the influence of high temperatures on mechanical properties of advanced refractory cement composite reinforced with carbon fibres. The action of high temperatures was investigated on two temperature levels 600 °C and 1000 °C and was compared to reference specimens dried at 105 °C. keywords: carbon; cement; ceramic; composite; fibres; fracture; refractory; strength; temperature cache: ap-4720.pdf plain text: ap-4720.txt item: #967 of 1656 id: ap-4737 author: Pokorný, Marek title: RAPID VISUALIZATION OF THE MASS DISTRIBUTION PROFILE OF ELECTROSPUN LAYERS date: 2018 words: 3483 flesch: 47 summary: A series of experiments proved that the developed collector allows an easy evaluation of the appearance of nanofibrous layers as well as the effects of many associated factors such as emitter configuration on the resulting sample. The results showed how the properties of nanofibrous layers (such as deposition zone dimensions, location of these zones, mass distribution profiles produced by different spinning nozzles) can change during the electrospinning process. keywords: analysis; collector; distribution; electrospinning; layers; mass; materials; process; thickness cache: ap-4737.pdf plain text: ap-4737.txt item: #968 of 1656 id: ap-474 author: Diviš, M.; Tichánek, R.; Španiel, M. title: Heat Transfer Analysis of a Diesel Engine Head date: 2003 words: 2894 flesch: 52 summary: It contains a detailed description of a C/28 series diesel engine head FE model and a discussion of heat transfer analysis tunning and results. Keywords: heat transfer analysis, FEM, internal-combustion engine. keywords: contact; cylinder; fig; head; heat; transfer; valve cache: ap-474.pdf plain text: ap-474.txt item: #969 of 1656 id: ap-4740 author: Quesne, Christiane title: QUASI-EXACTLY SOLVABLE SCHRÖDINGER EQUATIONS, SYMMETRIC POLYNOMIALS AND FUNCTIONAL BETHE ANSATZ METHOD date: 2018 words: 5818 flesch: 79 summary: = − q−1∑ t=0 [2(n− 1)ak−t + bk−t−1]m(q−t,0̇) − [q/2]∑ s=1 q−2s∑ t=0 2ak−tm(q−t−s,s,0̇) − n(n− 1) k(k − 1) q(2k − q − 1)ak−q − n k − n(n− 1) k(k − 1) q(2k − q − 1)ak−q − n k keywords: equation; polynomials; terms cache: ap-4740.pdf plain text: ap-4740.txt item: #970 of 1656 id: ap-4742 author: Rychtáriková, Renata; Urban, Jan; Štys, Dalibor title: ŽAMPA’S SYSTEMS THEORY: A COMPREHENSIVE THEORY OF MEASUREMENT IN DYNAMIC SYSTEMS date: 2018 words: 11998 flesch: 61 summary: From the point of view of Žampa’s theory, terms like system time, system attributes, system link, system element, input, output, sub-systems, and state variables are defined. System time and attributes System events occur at certain objects of the real world and represent themselves by changes of certain quali- ties which we are able to perceive in a certain way and organize in our mind. keywords: abstract; attributes; causal; cause; definition; figure; image; information; model; set; state; sub; system; theory; time; trajectory; variables; žampa cache: ap-4742.pdf plain text: ap-4742.txt item: #971 of 1656 id: ap-476 author: Jokele, B.; Fuchs, D. K. title: Reducing Time for the Product Development Process by Evaluation in the Phase of Solution Searching date: 2003 words: 2116 flesch: 57 summary: Due to the fact that the problem occurs shortly be- fore or after product launch, a characteristic feature of 40 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 43 No. 5/2003 Reducing Time for the Product Development Process by Evaluation in the Phase of Solution Searching B. Jokele, D. K. Fuchs Less and less time is available for product development process. Keywords: troubleshooting, change management, concurrent use of methods. - normal process preventive measures minor failings to acceptable customer 1 2 3 P ro du ct io n pr ep ar at io n C la rif yi ng th e ta sk C on ce pt ua l d es ig n E m bo di m en t d es ig n D et ai l d es ig n trouble shooting normal process preventive measures ro du ct la un ch P unfullfilled requirements, or failings time major failings 1 2 3 Fig. 1: Possible stages in product development process a troubleshooting situation is lack of time. keywords: development; fig; process; product; time cache: ap-476.pdf plain text: ap-476.txt item: #972 of 1656 id: ap-4768 author: Hájková, Petra; Jíra, Aleš; Řehounek, Luboš title: VERIFICATION OF BEHAVIOUR OF HUMAN ENAMEL FOR FRACTURE TOUGHNESS DETERMINATION date: 2018 words: 4007 flesch: 59 summary: Fracture toughness describes the resistance of the material against the propagation of cracks at given stress values. A part of the re- view was also dedicated to a comparison of results of fracture toughness, determined by the VIF method using three different popular equations, for standard reference material (SRM). keywords: cracks; enamel; energy; fracture; hardness; indentation; method; modulus; toughness cache: ap-4768.pdf plain text: ap-4768.txt item: #973 of 1656 id: ap-478 author: Geromiller, H.-P.; Farschtschi, A. title: Numerical Calculation of Electric Fields in Housing Spaces Due to Electromagnetic Radiation from Antennas for Mobile Communication date: 2003 words: 1041 flesch: 54 summary: 2: Dependency of maximum electric field strength inside a housing space referred to incident electric field strength (Emax /Einc) over angle of incidence (�) References It should be taken into account that the effects of electromagnetic radi- ation on humans are quadratically dependent on the electric field strength, as these effects are mainly related to the ener- getic density of the electromagnetic waves, and therefore the negative impacts on humans increase disproportionately with electric field strength. keywords: electric; field cache: ap-478.pdf plain text: ap-478.txt item: #974 of 1656 id: ap-4799 author: Dobrotvorskiy, Sergey; Aleksenko, Borys; Dobrovolska, Ludmila; Basova, Yevheniia title: EFFECT OF THE APPLICATION OF MICROWAVE ENERGY ON THE REGENERATION OF THE ADSORBENT date: 2018 words: 5740 flesch: 52 summary: ρ0(cp)pth(T3 − T2) + Md(cp)d +Mv(cp)v(T3 − T1) + q1 ρ0(cp)pth(T3 − T2) , (1) where Qp — amount of purge air; Mw — mass of adsorbed water, kg/column; Md — mass of adsorbent, kg/column; Mv — mass of purge air, kg/column; Ha — heat of adsorption, J/mol; cp — specific heat; q1 — external heat loss; ρ0 — air density (at sea level, at 75 °C = 1.225 kg/m3); T1 — initial temperature of the adsorbent, °C; T2 — purge air temperature at the inlet, °C; T3 — purge air temperature at the outlet, °C; th — heating regeneration time, s. It should also be taken into account that silica gel loses its useful properties when it overheats above 200 °C. Ac = Qcρ0tc 1.25Md , (2) where Ac — amount of cooling air; Md — mass of adsorbent, kg/column; Qc — cooling air consump- tion, m3/sec; ρ0 — air density (at sea level, at 15 °C, 1.225 kg/m3); tc — cooling time, s. It should be noted that if the first stage of the re- generation process takes place at a lower temperature, this reduces the time of the regeneration process by reducing the cooling time of the adsorbent in the sec- keywords: adsorbent; adsorption; air; energy; fig; microwave; moisture; process; regeneration; regeneration process; temperature; volume cache: ap-4799.pdf plain text: ap-4799.txt item: #975 of 1656 id: ap-480 author: Brůžek, B.; Leidich, E. title: Numerical Simulation of Stresses in Thin-rimmed Spur Gears with Keyway date: 2003 words: 3506 flesch: 71 summary: [mm] Fig. 8: Stress distribution in the loaded root of the tooth (left) and in the keyway (right) for double-sided torque distribution; � � 2.5°; module 2 mm; normal force on tooth Z3; �, �: see Fig. 7. 8 Length of the key In the practice the variant with the flush hub and key of- ten occurs. 9: Stress distribution in the loaded root of the tooth (left) and in the keyway (right) for one-sided torque distribution; � � 2.5°; mod- ule 2 mm; normal force on tooth Z3; �, �: see Fig. 7 0,2 0,4 0,6 0,8 1 5 10 15 20 25 30 35 40 -800 -600 -400 -200 0 200 400 600 800 -800 -600 -400 -200 0 200 400 600 800 0 0,2 0,4 0,6 0,8 5 10 15 20 25 30 35 40 -200 0 200 400 600 800 1.000 1.200 1.400 -200 0 200 400 600 800 1.000 1.200 1.400 z keywords: keyway; root; stress; tooth; � � cache: ap-480.pdf plain text: ap-480.txt item: #976 of 1656 id: ap-482 author: Vyhlídal, T.; Zítek, P. title: Anisochronic Internal Model Control Design date: 2003 words: 4903 flesch: 65 summary: Since model (5) is supposed to approximate model (20) in the low frequency range, the points of the frequency response being approximated have been chosen those with � � � �� �� � � �1 1 2� � �arg P j and � � � �� �� � � �2 2� � �arg P j . Considering variable s as a complex variable, i.e., s � �� �j , the complex roots of (6) are the solutions of the equations � �� � � � � �Re exp cosN s a� � � �1 0�� �� (7) � �� � � � � �Im exp sinN s a� � ��� �� 0 (8) which result from splitting equation (6) into real and imagi- nary parts. keywords: model �; s �; � exp; � f; � g; � j; � � cache: ap-482.pdf plain text: ap-482.txt item: #977 of 1656 id: ap-4833 author: Machovec, Jan; Reiterman, Pavel title: INFLUENCE OF AGGRESSIVE ENVIRONMENT ON THE TENSILE PROPERTIES OF TEXTILE REINFORCED CONCRETE date: 2018 words: 5630 flesch: 58 summary: Three types of used textile reinforcement. Results Performed experimental program was focused on the assessment of the resistance of TRC made of HPC matrix and glass textile reinforcement to various aggressive environments. keywords: concrete; environment; figure; matrix; point; reinforcement; samples; strength; textile; trc cache: ap-4833.pdf plain text: ap-4833.txt item: #978 of 1656 id: ap-484 author: Lazim, Tholudin Mat; Mat, Shabudin; Saint, Huong Yu title: Computational Fluid Dynamic Simulation (CFD) and Experimental Study on Wing-external Store Aerodynamic Interference of a Subsonic Fighter Aircraft date: 2003 words: 3574 flesch: 52 summary: Research on external store installation is complex and extensive. The methods for determining the influence of stores on the wing will be used to simulate the full size of this fighter aircraft with real size external store. keywords: aircraft; cfd; fig; model; pressure; store; surface; tunnel; wing cache: ap-484.pdf plain text: ap-484.txt item: #979 of 1656 id: ap-4850 author: Senk, Josef; Laznickova, Ilona; Jakubova, Ivana title: UPDATED VERSION OF THE SIMPLIFIED MODEL OF INTENSIVELY BLASTED ELECTRIC ARC date: 2018 words: 3613 flesch: 60 summary: Keywords: electric arc, arc heater, argon, modeling. Predictions of arc temperature profiles using approximate emission coefficients for radiation 269 http://dx.doi.org/10.14311/AP.2016.56.0395 http://dx.doi.org/10.1109/EPE.2016.7521749 J. Senk, I. Laznickova, I. Jakubova Acta Polytechnica ‐15 ‐10 ‐5 0 5 10 15 20 25 2.30 2.50 2.70 2.90 3.10 3.30 3.50 3.70 3.90  keywords: anode; arc; cathode; channel; current; ∆tot cache: ap-4850.pdf plain text: ap-4850.txt item: #980 of 1656 id: ap-4854 author: Lytvyniak, Oksana; Tashak, Myroslava title: THE SUGGESTIONS AS TO THE CALCULATION BEARING CAPACITY OF SANDWICH REINFORCED CONCRETE — FOAMED CONCRETE FLOOR SLABS date: 2019 words: 4261 flesch: 49 summary: Keywords: sandwich reinforced concrete – foamed concrete floor slab; foamed concrete; calculation by limiting states; reinforced concrete; fiber polypropylene. The calculation of the stressed-formed state of the SRFCS is done on the basis of following preconditions: • the condition of combined work of normal concrete, foamed concrete and steel reinforcement and this situation was ensured in the experiment; • impartial Bernoulli’s hypothesis for plane sections is taken into consideration; • the curvilinear stress diagram of foamed concrete (as parabola) is changed for the equivalent bilinear diagram (orthogonal–triangular) keywords: concrete; floor; floor slabs; reinforcement; sandwich; slabs; srfcs; steel cache: ap-4854.pdf plain text: ap-4854.txt item: #981 of 1656 id: ap-486 author: Ritschl, E.; Theiner, R.; Hanus, D. title: Inlet Channel for a Ducted Fan Propulsion System of a Light Aircraft date: 2003 words: 1684 flesch: 65 summary: Smoothness and continuity of the channel chord ratio are the main requirements of channel design. Our boundary layer calculation [5] shows that the optimum channel cross-section taper is 0.54 per 1 m of channel length (Fig. 3). keywords: channel; design; fig; flow; velocity cache: ap-486.pdf plain text: ap-486.txt item: #982 of 1656 id: ap-4862 author: Flegner, Patrik; Kačur, Ján title: EVALUATION OF SENSOR SIGNAL PROCESSING METHODS IN TERMS OF INFORMATION THEORY date: 2018 words: 5155 flesch: 57 summary: The paper deals with the examination of basic methods of evaluation of sensor signals in terms of the information content of the given method and the used technical means. We can define the sketched problem of “data mining” from signal sensors in terms of information theory and signal theory. keywords: amplitude; analog; bit; entropy; information; measurement; measuring; processing; sensor; signal; spectrum; system cache: ap-4862.pdf plain text: ap-4862.txt item: #983 of 1656 id: ap-4864 author: Vodička, Václav; Novotný, Václav; Mascuch, Jakub title: WEAR BEHAVIOUR OF VANES FOR A ROTARY VANE EXPANDER WITH VARIOUS GRAPHITE MATERIALS UNDER DRY SLIDING CONDITIONS date: 2018 words: 4777 flesch: 61 summary: Since scroll and screw expanders are too complex and expensive [1], vane expanders can be used due to their simplicity and low manufacturing costs. Therefore, vane expanders are also used in our experimental de- velopment of micro-ORC systems [2]. keywords: carbon; coefficient; expander; fibre; friction; graphite; materials; vane; wear cache: ap-4864.pdf plain text: ap-4864.txt item: #984 of 1656 id: ap-4877 author: Kavitha, Manickam; Kalpana, Alagar M. title: LOW LEAKAGE CHARGE RECYCLING TECHNIQUE FOR POWER MINIMIZATION IN CNTFET CIRCUITS date: 2019 words: 5425 flesch: 70 summary: The main idea of the paper is to reduce the power dissipation of CNTFET digital circuits by using a methodology called power gating. Percentage savings of power gated circuits when N is varied. keywords: carbon; charge; circuits; cntfet; figure; gating; leakage; mode; power; sleep; technique; voltage cache: ap-4877.pdf plain text: ap-4877.txt item: #985 of 1656 id: ap-488 author: Valášek, M.; Steinbauer, P.; Kolář, J.; Dvořák, J. title: Concurrent Design of Railway Vehicles by Simulation Model Reuse date: 2003 words: 3177 flesch: 47 summary: The particular relationships between world models and their components can also be generalized into more abstract knowledge about the development of virtual models and their simulation (Fig. 5) Due to the nature of the described methodology, simulation models are an essential part of this. keywords: design; fig; knowledge; model; modelling; simulation; world cache: ap-488.pdf plain text: ap-488.txt item: #986 of 1656 id: ap-4889 author: Samir, Benbakreti; Boukelif, Aoued title: NEW APPROACH FOR ONLINE ARABIC MANUSCRIPT RECOGNITION BY DEEP BELIEF NETWORK date: 2018 words: 7417 flesch: 59 summary: Arabic words recognition rates and classifi- cation time according the neural network. made in the different neuronal approaches. Arabic words recognition rates and classifi- cation time according the DBN network. keywords: arabic; character; classification; dbn; figure; function; handwriting; input; layer; learning; network; online; rbm; recognition; training; vector; words cache: ap-4889.pdf plain text: ap-4889.txt item: #987 of 1656 id: ap-490 author: Hagras, T.; Janeček, J. title: Static vs. Dynamic List-Scheduling Performance Comparison date: 2003 words: 4298 flesch: 70 summary: i v succ v m i m m i � � � � � � max ( ) , , where succ(vi) is the set of immediate successors of vi and � � � �b level v w vexit exit� � . The � �b level vi� is computed recursively by traversing the DAG upward starting from the exit node vexit as follows: � � � � b level v w b level v ci keywords: algorithm; level; list; node; scheduling; � � cache: ap-490.pdf plain text: ap-490.txt item: #988 of 1656 id: ap-4907 author: Sorokin, Pavel Alekseevich; Khryakov, Kirill Stanislavovich; Gommers, Michiel title: ANALYSIS OF DALLARA T12 RACE CAR FRONT WING VIBRATIONS date: 2018 words: 3487 flesch: 60 summary: Spectral power density of front wing vibrations fS(f). Made up energy spectrums of wing vibrations for three specific cases arising during driving on the circuit. keywords: car; dallara; energy; figure; racing; t12; vibrations; wing cache: ap-4907.pdf plain text: ap-4907.txt item: #989 of 1656 id: ap-4910 author: Yusuff, Adeyinka Sikiru title: ADSORPTION OF CATIONIC DYE FROM AQUEOUS SOLUTION USING COMPOSITE CHICKEN EGGSHELL - ANTHILL CLAY: OPTIMIZATION OF ADSORBENT PREPARATION CONDITIONS date: 2019 words: 6530 flesch: 55 summary: Analysis of variance (ANOVA) for response surface quadratic model for MB dye adsorption. Comparison of monolayer adsorption capacities of different adsorbents for MB dye adsorption. keywords: adsorbent; adsorption; anthill; calcination; ceac; composite; design; dye; eggshell; journal; kinetics; model; order; solution cache: ap-4910.pdf plain text: ap-4910.txt item: #990 of 1656 id: ap-4911 author: Vokurka, Karel title: THE TIME DIFFERENCE IN EMISSION OF LIGHT AND PRESSURE PULSES FROM OSCILLATING BUBBLES date: 2018 words: 6597 flesch: 68 summary: Intensity of oscillation of spark generated bubbles. Experimental study of light emission from spark generated bubbles. keywords: bubble; difference; figure; light; pressure; pulses; radiation; rm1; spark; time; time difference cache: ap-4911.pdf plain text: ap-4911.txt item: #991 of 1656 id: ap-4915 author: Pehnelt, Tomáš; Lafata, Pavel; Nevosad, Marek title: MODIFICATION OF HIERARCHICAL AGGLOMERATIVE CLUSTERING WITH COMPLETE LINKAGE FOR OPTIMAL USAGE WITH PASSIVE OPTICAL NETWORKS date: 2018 words: 4222 flesch: 50 summary: Today, passive optical networks (PONs) represent a modern solution for high-speed FTTx subscriber lines and networks. Keywords: passive optical network; network optimization; topology optimization; algorithms; hierar- chical clustering; optical splitter placement. keywords: algorithm; attenuation; clustering; clusters; linkage; network; number; pon; units cache: ap-4915.pdf plain text: ap-4915.txt item: #992 of 1656 id: ap-4917 author: Ouamara, Daoud; Dubas, Frédéric; Randi, Sid Ali; Benallal, Mohamed Nadjib; Espanet, Christophe title: GENERAL CALCULATION OF WINDING FACTOR FOR MULTI-PHASE/-LAYER ELECTRICAL MACHINES IRRESPECTIVE OF POLES NUMBER date: 2019 words: 4538 flesch: 73 summary: In order to represent multi-layer windings, [1] has subdivised the number of columns of [Mw] by the number of layers. By introducing this new concept, multi-layer windings having false-zero will be subdivided into two categories: i) α-windings (i.e., odd false-zero windings), and ii) β-windings (i.e., even false-zero windings). keywords: factor; figure; layer; number; phase; winding cache: ap-4917.pdf plain text: ap-4917.txt item: #993 of 1656 id: ap-492 author: Jokl, M. V. title: Indoor Air Quality Assessment Based on Human Physiology - Part 1. New Criteria Proposal date: 2003 words: 3203 flesch: 54 summary: [dB TVOC], (5) where �CO2 and �TVOC represent the concentrations of CO2 and TVOC. 1.6: The percentage of dissatisfied sedentary subjects as a function of the total volatile organic compound concen- tration (TVOC) above outdoors Sample TVOC [�g �m�3] Odor level [dTv] Study min mean max min mean max Living rooms and bedrooms old houses 130 200 240 21 30 34 Brown, Crump 1993 new houses 330 460 580 41 48 53 non-asthmatics 72 320 1600 8 40 75 Nordbäck et al 1993 asthmatics 67 540 8300 6 52 111 Office buildings a) without SBS during working hours 43 51 61 �3* 0 4 Ekberg 1993 during night-time 37 44 49 �6* �3* 0 during weekend 37 – – �6* – – b) with SBS (liquid process photo copiers) – 5000 90000 – 100 163 Broder et al 1993 SBS � Sick Building Syndrome * keywords: air; co2; equation; fig; odor; tvoc cache: ap-492.pdf plain text: ap-492.txt item: #994 of 1656 id: ap-4922 author: Kravanja, Sebastjan; Sovják, Radoslav title: ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE UNDER HIGH-VELOCITY PROJECTILE IMPACT. PART I. EXPERIMENTS date: 2018 words: 5126 flesch: 59 summary: Keywords: projectile impact; UHPFRC; depth of penetration; mechanical properties; shear crack resistance. Cubes were differ- entiated on the basis of the fibre volumetric content and effect of projectile impact was investigated in terms of the cratering damage. keywords: concrete; crack; fibre; impact; penetration; projectile; properties; resistance; strength; uhpfrc; volume cache: ap-4922.pdf plain text: ap-4922.txt item: #995 of 1656 id: ap-4924 author: Kravanja, Sebastjan; Sovják, Radoslav title: ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE UNDER HIGH-VELOCITY PROJECTILE IMPACT - PART 2. APPLICABILITY OF PREDICTION MODELS date: 2018 words: 6383 flesch: 57 summary: APPLICABILITY OF PREDICTION MODELS Sebastjan Kravanjaa, Radoslav Sovjákb,∗ a Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova cesta 2, Ljubljana 1000, Slovenia b Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic ∗ corresponding author: sovjak@fsv.cvut.cz Abstract. Keywords: projectile impact; UHPFRC; prediction models; depth of penetration; mass ejection. keywords: accuracy; concrete; depth; energy; fibre; impact; mass; model; penetration; prediction; projectile; results; target cache: ap-4924.pdf plain text: ap-4924.txt item: #996 of 1656 id: ap-4928 author: Shalimba, Veikko; Sopko, Vít title: JATROPHA OIL WITH IRON NANOPARTICLES APPLICATION IN DRILLING PROCESSES date: 2019 words: 2417 flesch: 63 summary: Water with iron nanoparticles samples were chosen because, in general, water is the heat transfer medium for heat exchangers, because of its availability and good thermo-physical properties. A performance of heat transfer fluids has a substantial influence on the size, weight and cost of heat transfer systems, therefore, a high-performance heat transfer fluid is very important in many industries. keywords: iron; nanoparticles; oil; samples; temperature; time cache: ap-4928.pdf plain text: ap-4928.txt item: #997 of 1656 id: ap-4934 author: Panchenko, Sergii; Ohar, Oleksandr; Kutsenko, Maksym; Smachilo, Julia title: A METHOD OF COMPLEX CALCULATION OF RATIONAL STRUCTURAL PARAMETERS OF RAILWAY HUMPS date: 2018 words: 3957 flesch: 67 summary: Ix = 0; Ix − 50 = 0; I1 − I2 − 25 = 0, V YRP en − V YRP en(max) = 0;T0 − Tmax 0 = 0; (37) (3.) − w0 − wrol(1) keywords: hump; yrp cache: ap-4934.pdf plain text: ap-4934.txt item: #998 of 1656 id: ap-494 author: Jokl, M. V. title: Indoor Air Quality Assessment Based on Human Physiology - Part 2. Limits date: 2003 words: 3129 flesch: 64 summary: � � � [�g �m�3] we get for adapted persons, preferring again �p as it was with CO2, � �� ���TVOC � � � �46000 598 104ln .PD keywords: g �; persons; range; � m; � p; � � cache: ap-494.pdf plain text: ap-494.txt item: #999 of 1656 id: ap-496 author: Jokl, M. V. title: Indoor Air Quality Assessment Based on Human Physiology - Part 3. Applications date: 2003 words: 5239 flesch: 66 summary: The prescriptive requirements for the building, RB, determined from TVOC building emanation in this table by Equation R GB B i e� �TVOC TVOC TVOC36. 2.1 (p. 33), � iTVOC � indoor TVOC concentration keywords: air; g �; h �; indoor; l �; quality; requirements; table; ventilation; vol; � m; � � cache: ap-496.pdf plain text: ap-496.txt item: #1000 of 1656 id: ap-4969 author: Adlerová, Iva title: Editorial: FAREWELL AND WELCOME NEW EDITOR-IN-CHIEF date: 2018 words: 394 flesch: 53 summary: Acta Polytechnica doi:10.14311/AP.2018.58.00IX Acta Polytechnica 58(3):ix–ix, 2018 © Czech Technical University in Prague, 2018 available online at http://ojs.cvut.cz/ojs/index.php/ap Farewell My seven years with Acta Polytechnica ended on June 30. keywords: polytechnica cache: ap-4969.pdf plain text: ap-4969.txt item: #1001 of 1656 id: ap-4976 author: Munshi, Mohmmadraiyan M.; Patel, Ashok R.; Deheri, Gunamani B. title: A STUDY OF FERROFLUID LUBRICATION BASED ROUGH SINE FILM SLIDER BEARING WITH ASSORTED POROUS STRUCTURE date: 2019 words: 4472 flesch: 62 summary: Profile of load bearing capacity with regards to µ∗, σ and ε for the comparison of e and ψ∗. ε Load bearing capacity calculated for (µ∗ = 0.02, α = 0.01, σ = 0.03, ψ = 30, 1/β1 = 0.01, l∗ = 1.75, e = 0.15, ψ∗ = 0.02) Result for assorted porosity Result for conventional porosity -0.02 0.1692074 0.1602794 -0.01 0.168718 0.1598716 0 0.1682335 0.1594672 0.01 0.1677536 0.1590663 0.02 0.1672784 0.1586686 Table 4. Profile of load bearing capacity with re- gards to µ∗. (a). keywords: bearing; capacity; ferrofluid; film; load; lubrication; slider cache: ap-4976.pdf plain text: ap-4976.txt item: #1002 of 1656 id: ap-498 author: Pekárek, S. title: Non-Thermal Plasma Ozone Generation date: 2003 words: 3368 flesch: 63 summary: Consequently, technologies based on non-thermal plasma can be highly ef- fective in promoting oxidation, enhancing molecular dissoci- ation or producing free radicals to stimulate plasmachemical reactions, which can be used for ozone generation or for other ecological applications such as decomposition of pollutants in air streams. Due to the fact that the processes of ozone generation are carried out at atmospheric pressure, we shall focus on atmo- spheric pressure electrical discharges only. keywords: air; discharge; gas; generation; ozone; plasma; temperature; � � cache: ap-498.pdf plain text: ap-498.txt item: #1003 of 1656 id: ap-4983 author: Dobrotvorskiy, Sergey; Dobrovolska, Ludmila; Basova, Yevheniia; Aleksenko, Borys title: PARTICULARS OF ADSORBENT REGENERATION WITH THE USE OF MICROWAVE ENERGY date: 2019 words: 6811 flesch: 53 summary: [8] with hot regeneration of adsorbent (I), adsorption column with the built-in heater in the regeneration stage (II) and the computer model of this column (III): 1 is the body of adsorption column; 2 is the internal heater; 3 is the inlet of the non-heated dry purge air; 4 is the output of the heated, moisture-saturated purge air. The study begins with the calculation of the flow in the cavity of adsorption columns. 4.1.1. keywords: adsorbent; adsorption column; air; cooling; figure; heat; heater; ht adsorption; process; regeneration; temperature; volume cache: ap-4983.pdf plain text: ap-4983.txt item: #1004 of 1656 id: ap-4991 author: Plaček Otcovská, Tereza; Mužíková, Barbora; Padevět, Pavel title: MECHANICAL PROPERTIES OF RAMMED EARTH WITH RESPECT TO CLAY MIXTURE COMPOSITION date: 2019 words: 5998 flesch: 64 summary: 3. Results and Discussion There were minimally 4 test specimens for every ten- sile bending strength and compressive strength tests. Tensile bending strength test specimens were 40×40×160 mm each. keywords: bending; clay; compressive; earth; mixtures; mpa; specimens; strength; tensile; test; water cache: ap-4991.pdf plain text: ap-4991.txt item: #1005 of 1656 id: ap-4999 author: Olusunmade, Olusola Femi; Bulus, Abba Emmanuel; Kashin, Terwase Kelvin title: EFFECT OF IMPERATA CYLINDRICA REINFORCEMENT FORM ON THE TENSILE AND IMPACT PROPERTIES OF ITS COMPOSITES WITH RECYCLED LOW DENSITY POLYETHYLENE date: 2018 words: 2739 flesch: 54 summary: Compared to the other types of fibre form, the powder form has the smallest volume. However, the addition of short fibres has been found to be more effective. keywords: composite; fibre; mat; particulate; rldpe; tensile cache: ap-4999.pdf plain text: ap-4999.txt item: #1006 of 1656 id: ap-500 author: Abdelaziz, Taha H. S.; Valášek, M. title: A Direct Algorithm for Pole Placement by State-derivative Feedback for Single-input Linear Systems date: 2003 words: 7781 flesch: 68 summary: 3 Pole placement by state-derivative feedback for linear time-varying systems The above methodology can be extended for general sin- gle-input controllable linear time-varying systems � � � � � � � � � ��x A x Bt t t t u t� � , � �x xt0 0� (30) where � �x t n�R and � �u t �R are the state vector and the scalar control input, respectively, while � �A t n n� �R and � �B t n�R are the system matrix and control gain vector, respectively. 2.1 Pole placement problem formulation Consider a controllable linear time-invariant single-input system, � � � � � ��x A x Bt t u t� � , � �x xt0 � 0, (1) where � �x t n�R and � �u t �R are the state vector and the sca- lar control input, respectively, while A � �Rn n and B �Rnare the system matrix and control gain vector, respectively. keywords: matrix �; t �; � d; � e; � k; � q; � r; � u; � x; � z; � � cache: ap-500.pdf plain text: ap-500.txt item: #1007 of 1656 id: ap-5012 author: Plankovskyy, Sergey; Teodorczyk, Andrzei; Shypul, Olga; Tryfonov, Oleg; Brega, Dmytro title: DETERMINATION OF DETONABLE GAS MIXTURE HEAT FLUXES AT THERMAL DEBURRING date: 2019 words: 4700 flesch: 55 summary: 2/2019 Determination of detonable gas mixture heat fluxes at thermal deburring Taking into account the complicated nature of the modelled system, some assumptions were used: • 2/2019 Determination of detonable gas mixture heat fluxes at thermal deburring Figure 1. keywords: chamber; combustion; deburring; flux; heat; mixture; model; pressure; shock; temperature; waves cache: ap-5012.pdf plain text: ap-5012.txt item: #1008 of 1656 id: ap-5015 author: Dvořák, Pavel; Jiránková, Eva title: EFFECTS ON THE FINAL INTENSITY OF INPUT FORCES IN LONGBOLTS INSTALLED AT THE MINING OPERATION 2 AREA, OKD, INC. date: 2018 words: 3968 flesch: 62 summary: The primary objective and function of the installed bolting elements (rock bolts, long bolts) is not only the transfer of shear and tensile loads acting in the massif, but also the ability to bring a certain degree of stress into the massif and thereby positively affect it (closing microcracks, increasing the shear strength). In order to avoid a massive stratification of the overburden, a system of reinforcement of mining works was designed using a rock bolt reinforcement and various types of long bolts (cable bolts, strand bolts). keywords: bolting; bolts; force; input; intensity; ir-6; loss; mining; stress; stressing cache: ap-5015.pdf plain text: ap-5015.txt item: #1009 of 1656 id: ap-5017 author: Farhadi Ayoublou, Farhad; Taromi, Majid; Eftekhari, Abbas title: TUNNEL PORTAL INSTABILITY IN LANDSLIDE AREA AND REMEDIAL SOLUTION: A CASE STUDY date: 2019 words: 5408 flesch: 52 summary: This requires a good understanding of the interaction between the landslide and tunnel excavation, which must be investigated in terms of controlling displacements and the effects of stress through long-term monitoring and numerical analyses. FLAC3D - Fast Lagrangian Analysis of Continua in 3 Dimensions, 2005. 447 http://dx.doi.org/10.1007/s10346-012-0326-8 http://dx.doi.org/10.1016/j.tust.2007.12.005 Acta Polytechnica 59(5):435–447, 2019 1 Introduction 2 General geology 2.1 Geology of study area 3 Geotechnical study 4 Slope stability analysis 4.1 Limit equilibrium analysis 4.2 Numerical analysis 4.3 Slope stability analysis results 5 Slope instability monitoring 6 Tunnel collapse and slope failure 7 The survey phase 7.1 Slope topography and geometry 7.2 Geology 7.3 Hydrology 7.4 History of landslides and tunnel excavation 7.5 Geophysical studies 8 Remedial solution 8.1 Passing through the collapsing area of the tunnel 8.2 Slope improvement 8.3 Debris flows 8.4 Filling the collapsing cavity 8.5 The tunnel excavation method 8.6 Monitoring stages 9 Discussion and conclusion Acknowledgements References keywords: analysis; area; fault; figure; instability; landslide; portal; slope; slope stability; tunnel; tunnel excavation; tunnel portal cache: ap-5017.pdf plain text: ap-5017.txt item: #1010 of 1656 id: ap-5018 author: Can, Erol title: MATHEMATICAL ALGORITHM OF FUZZY LOGIC CONTROLLER FOR MULTILEVEL INVERTER CREATING VERTICAL DIVIDED VOLTAGE date: 2019 words: 6169 flesch: 67 summary: Therefore, some control methods as a PID controller and Fuzzy logic controller has been used to control the power electronic circuits [9, 18]. [18] Ismail H Altas, Adel M Sharaf“A generalized direct approach for designing fuzzy logic controllers in Matlab/Simulink GUI environment“ International Journal of Information Technology and Intelligent Computing, no.4 vol.1: 2007. keywords: control; converter; error; figure; fuzzy; inverter; level; logic; voltage cache: ap-5018.pdf plain text: ap-5018.txt item: #1011 of 1656 id: ap-502 author: Elnagahy, Farag Ibrahim Younis; Šimák, B. title: Wavelet-Based Embedded Rate Scalable Still Image Coders: A review date: 2004 words: 10126 flesch: 58 summary: [26] Adams M. D.: Reversible wavelet transforms and their appli- cation to embedded image compression. Keywords: JPEG2000, embedded image coding, grayscale, color, scalable, progressive, compression, discrete wavelet transform. keywords: algorithm; bit; coding; coefficients; compression; fig; image; pass; rate; stream; sub; transform; wavelet; � � cache: ap-502.pdf plain text: ap-502.txt item: #1012 of 1656 id: ap-5020 author: Sysyn, Mykola; Nabochenko, Olga; Kovalchuk, Vitalii; Gerber, Ulf title: EVALUATION OF RAILWAY BALLAST LAYER CONSOLIDATION AFTER MAINTENANCE WORKS date: 2019 words: 6439 flesch: 48 summary: Keywords: ballast layer consolidation; tamping machines; seismic method; impulse response interpre- tation; signal processing; feature selection; classification; clustering. Monitoring methods of ballast layer consolidation keywords: analysis; ballast; ballast consolidation; ballast layer; consolidation; degree; frequency; layer consolidation; measurements; methods; railway; response; signal; track; wave cache: ap-5020.pdf plain text: ap-5020.txt item: #1013 of 1656 id: ap-5026 author: Kostin, Vitalii; Halounová, Lena title: AN ANALYSIS OF SPATIAL STRUCTURE OF URBAN REGIONAL NETWORKS USING GIS date: 2019 words: 4574 flesch: 60 summary: Road network is the foundation of the urbanization process. Taking advantage of modern GIS technologies, we investigate the geometric and topological characteristics of road networks on detailed spatial data. keywords: average; degree; length; network; nodes; region; roads; value cache: ap-5026.pdf plain text: ap-5026.txt item: #1014 of 1656 id: ap-5028 author: Peciar, Peter; Macho, Oliver; Fekete, Roman; Peciar, Marián title: THE USE OF DEM SIMULATION FOR CONFIRMING THE PROCESS OF PARTICULATE MATERIAL MIXING date: 2018 words: 5082 flesch: 54 summary: 387 http://dx.doi.org/10.12913/22998624/85663 http://dx.doi.org/10.1016/0032-5910(69)80067-7 http://dx.doi.org/10.1016/0032-5910(69)80104-X http://dx.doi.org/10.1016/0032-5910(67)80036-6 http://dx.doi.org/10.1016/S0032-5910(97)03281-6 http://dx.doi.org/10.1016/j.powtec.2011.04.004 http://dx.doi.org/10.1016/j.ces.2012.05.010 http://dx.doi.org/10.1016/j.powtec.2012.04.042 http://dx.doi.org/10.1016/j.powtec.2008.04.089 Acta Polytechnica 58(6):378–387, 2018 1 Introduction 2 Energy aspect of the mixing process 3 Experimental part 4 Simulation of DEM method process 5 Results 5.1 Influence of blade speed on horizontal force 5.2 Influence on depth of blade immersion on horizontal force 5.3 Comparison of resulting horizontal force acting on a blade 6 Conclusion List of symbols Acknowledgements References Acta Polytechnica doi:10.14311/AP.2018.58.0378 Acta Polytechnica 58(6):378–387, 2018 © Czech Technical University in Prague, 2018 available online at http://ojs.cvut.cz/ojs/index.php/ap THE USE OF DEM SIMULATION FOR CONFIRMING THE PROCESS OF PARTICULATE MATERIAL MIXING Peter Peciar∗, Oliver Macho, Roman Fekete, Marián Peciar Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, Institute of Process Engineering, Námestie Slobody 17, 812 31, Bratislava, Slovakia ∗ corresponding author: peter.peciar@stuba.sk Abstract. keywords: blade; blade immersion; blade speed; dimensionless; force; horizontal; material; mixing; particulate; particulate material cache: ap-5028.pdf plain text: ap-5028.txt item: #1015 of 1656 id: ap-5030 author: Vetter, Michael title: MODEL-BASED SECURITY ANALYSIS OF FPGA DESIGNS THROUGH REINFORCEMENT LEARNING date: 2019 words: 4799 flesch: 49 summary: We presented a method to generate a Markov Decision Process based reinforcement learning model from a formal, high-level system description (formulated in the domain-specific language FPGASECML.) Transformation flow from the FPGASECML to the BURLAP based reinforcement learning model. keywords: actions; attacks; data; fpga; learning; mdp; model; reinforcement; reward; scenario; security; state; system cache: ap-5030.pdf plain text: ap-5030.txt item: #1016 of 1656 id: ap-504 author: Brandejský, T. title: Implementation of Component-based Simulation Support Tool for Conceptual Design date: 2004 words: 4276 flesch: 50 summary: � � � �� � � � � �� �op N X R op N X N R, _ ,� (2) Binary operator � � � � � �� � � � � � � �� �op N X N X R op N X N X N R1 2 1 2, , _ , ,� (3) � � � � � �� � � � � �� � � � � �op fn X crisp X R crisp X sgltn X op fn X sgltn X f1 2 2 2 1 2, , _ , , ,� � � �� �n R (4) � � � � � �� � � � � �� � � � � �op flv X crisp X R crisp X sgltn X op fn X sgltn X1 2 2 2 1 2, , _ , , ,� � � �� �fn R (5) � � � � � �� � � � � � � �� �op flv X fn X R op flv X fn X fn R1 2 1 2, , _ , ,� (6) � � � � � �� � � � � �� � � �op mifs X crisp X R crisp X sgltn X op mifs X sgltn1 2 2 2 1, , _ , ,� � � � � �� �X mifs R2 , (7) � � � � � �� � � � � � � �� �op mifs X fn X R op mifs X fn X mifs R1 2 1 2, , _ , ,� (8) � � � � � �� � � � � � � �� �op mifs X flv X R op mifs X flv X mifs R1 2 1 2, , _ , ,� (9) � � � � � �� � � � � �� � � �op milv X crisp X R crisp X sgltn X op milv X sgltn1 2 2 2 1, , _ , ,� � � � � �� �X mifs R2 , (10) � � � � � �� � � � � � � �� �op milv X fn X R op milv X fn X mifs R1 2 1 2, , _ , ,� (11) � � � � � �� � � � � � � �� �op milv X flv X R op milv X flv X mifs R1 2 1 2, , _ , ,� (12) The first case can be described by transformations (14) – for unary operator and (15) for binary: � � � �� � � � � �� � � � � �� �op P X G R op P X R R G R, , _ , _� � (14) � � � � � �� � � � � � � �� � � � � �� �op P X P X G R op P X P X R R G R1 1 2 2 1 1 2 2, , , , _ , _� � (15) keywords: component; design; simulation; tool; type; uncertainty; � op; � � cache: ap-504.pdf plain text: ap-504.txt item: #1017 of 1656 id: ap-5040 author: Yusuff, Adeyinka S.; Popoola, Lekan T. title: OPTIMIZATION OF BIODIESEL PRODUCTION FROM WASTE FRYING OIL OVER ALUMINA SUPPORTED CHICKEN EGGSHELL CATALYST USING EXPERIMENTAL DESIGN TOOL date: 2019 words: 6112 flesch: 52 summary: The 2k factorial experimental design was employed for an optimization of process variables, which include catalyst loading, reaction time, methanol/oil molar ratio and reaction temperature and their effects on the biodiesel yield were studied. Plot of biodiesel yield (Y ) versus reaction time (t) at reaction temperature of 50 °C and 65 °C, 2wt.% catalyst loading and 6 : 1 methanol/oil molar ratio 3.2.2. keywords: analysis; biodiesel; catalyst; methanol; oil; production; ratio; reaction; temperature; time; transesterification; yield cache: ap-5040.pdf plain text: ap-5040.txt item: #1018 of 1656 id: ap-5043 author: Čep, Robert; Malotová, Šárka; Lichovník, Jiří; Hatala, Michal; Legutko, Stanislaw title: THE INFLUENCE OF CUTTING CONDITIONS ON THE SELECTED PARAMETERS OF THE SURFACE INTEGRITY date: 2018 words: 2605 flesch: 60 summary: The article deals with an investigation of residual stress in machined surface under conditions of high-feed milling and determination of the influence of machining conditions on the size and types of stress resulting from cutting into the machined surface. Keywords: residual stress; milling; machining; X-ray diffraction; surface integrity. keywords: conditions; cutting; machining; material; milling; stress; surface cache: ap-5043.pdf plain text: ap-5043.txt item: #1019 of 1656 id: ap-5050 author: Pylypaka, Serhii F.; Klendii, Mykola B.; Nesvidomin, Viktor M.; Trokhaniak, Viktor I. title: PARTICLE MOTION OVER THE EDGE OF AN INCLINED PLANE THAT PERFORMS AXIAL MOVEMENT IN A VERTICAL LIMITING CYLINDER date: 2019 words: 6103 flesch: 62 summary: The force F is directed opposite to the direction of sliding, that is to say, opposite to the vector of the absolute velocity of particle motion. In our case, particle motion must be different, since, if an ellipse moves, the angle be- tween a velocity vector and a horizontal plane is alter- nate, besides, the friction force from a cylinder wall acts on a particle. keywords: figure; motion; particle; particle motion; plane; velocity cache: ap-5050.pdf plain text: ap-5050.txt item: #1020 of 1656 id: ap-506 author: Alawy, A. El-Bassuny; Elnagahy, F. I. Y.; Haroon, A. A.; Azzam, Y. A.; Šimák, B. title: Stellar Image Interpretation System Using Artificial Neural Networks: date: 2004 words: 4422 flesch: 66 summary: Filled circles: images identified by Bi-polar function and DAOPHOT-II Open circles, square and triangle: images identified by DAOPHOT-II only 4 Conclusions Some conclusions can be drawn from the present study: Both Uni-polar and Bi-polar functions are good discrimi- nating functions when used in an ANN approach to identify stellar images among the other entities in a CCD frame. Recently, we have developed two approaches employing Artificial Intelligence techniques to recognise stellar images keywords: ccd; data; frame; function; images; star; vol cache: ap-506.pdf plain text: ap-506.txt item: #1021 of 1656 id: ap-5063 author: Szajewska, Marzena; Tereszkiewicz, Agnieszka Maria title: MULTIDIMENSIONAL HYBRID BOUNDARY VALUE PROBLEM date: 2018 words: 7913 flesch: 82 summary: =⇒ S, σ(rl) [5] Hakova, L., Hrivnak, J., and J. Patera, “Four families of Weyl group orbit functions of B3 and C3.” keywords: c b; c c; s 2b; s c; − c cache: ap-5063.pdf plain text: ap-5063.txt item: #1022 of 1656 id: ap-5070 author: Sellitto, Miguel Afonso title: LEAD-TIME, INVENTORY, AND SAFETY STOCK CALCULATION IN JOB-SHOP MANUFACTURING date: 2018 words: 4718 flesch: 65 summary: LT i – lead-time of order i; LTm – mean order LT ; LTσm – standard deviation of the order LT ; LTmw – mean part LT ; Qi – amount of value added by order i; ∑n i=1 Qi – total amount dispatched by all orders; LTσw – standard deviation of the part LT ; RI m – mean arrival rate of orders or parts; WIPm – mean WIP; Pm – mean throughput; ∆Tmax – maximum time elapsed between the arrival of two successive orders. The Throughput Diagram. in which: LT i – lead-time (LT ) of order i in the current work centre; TPE i – completion time of order i in the previous work centre (time of liberation); TPEU i – completion time of order i in the current work centre. n – number of orders. keywords: control; days; inventory; lead; manufacturing; order; time cache: ap-5070.pdf plain text: ap-5070.txt item: #1023 of 1656 id: ap-508 author: Tuncer, I. H.; Kay, M. title: Optimization of Flapping Airfoils for Maximum Thrust and Propulsive Efficiency date: 2004 words: 3511 flesch: 56 summary: In this work an approximation is made [13], and the step size is evaluated as follows: � � � � � �� O O D where � � � � � � �� � � O O O e n n n � � � � � D v v 1 1 . � ���O �D is then evaluated numerically. keywords: airfoil; efficiency; fig; flapping; optimization; plunge; thrust; � � cache: ap-508.pdf plain text: ap-508.txt item: #1024 of 1656 id: ap-510 author: Végh, L. title: The Psychological Image of Realistic Physical Quantities. The Psychological Speed of Aging date: 2004 words: 3424 flesch: 52 summary: Psychological physical quantities – PQ (PPQ). Psychological quantities (the designa- tion of psychological images of real quantities) are actually necessary components of our decision making. keywords: age; psa; quantities; time; � � cache: ap-510.pdf plain text: ap-510.txt item: #1025 of 1656 id: ap-5105 author: Kruschwitz, Jens; Lind, Martin; Muntean, Adrian; Richardson, Omar; Wondmagegne, Yosief title: MODELLING, SIMULATION AND PARAMETER IDENTIFICATION OF ACTIVE POLLUTION REDUCTION WITH PHOTOCATALYTIC ASPHALT date: 2019 words: 4470 flesch: 57 summary: In this paper, we report on the use of numerical simulations to mimic the effect of the presence of a street paved with photocatalytic asphalt has on the NO reduction in the local ambient. Advanced solar photocatalytic asphalt for removal of vehicular NOx. keywords: asphalt; concentration; data; figure; measurements; model; pollution; simulation cache: ap-5105.pdf plain text: ap-5105.txt item: #1026 of 1656 id: ap-5111 author: Blažević, Sebastijan; Mrzljak, Vedran; Anđelić, Nikola; Car, Zlatan title: COMPARISON OF ENERGY FLOW STREAM AND ISENTROPIC METHOD FOR STEAM TURBINE ENERGY ANALYSIS date: 2019 words: 10639 flesch: 61 summary: Overall, the HPT energy analysis, which represents a combina- tion of steam turbine energy power losses and energy efficiencies obtained by both of observed methods, is presented. Observed energy analysis methods cannot be directly compared because they are based on different sources of steam turbine energy losses, so, an overall steam turbine energy analysis is presented. keywords: energy; energy analysis; energy efficiency; energy flow; energy power; flow rate; hpt; hpt energy; hpt load; load; mass flow; method; steam; steam mass; steam turbine; turbine energy cache: ap-5111.pdf plain text: ap-5111.txt item: #1027 of 1656 id: ap-5114 author: Poloprutský, Zdeněk; Fraštia, Marek; Marčiš, Marián title: 3D DIGITAL RECONSTRUCTION BASED ON ARCHIVED TERRESTRIAL PHOTOGRAPHS FROM METRIC CAMERAS date: 2019 words: 7764 flesch: 60 summary: − − − − − − Version 6 | Version 7 | Version 10 | Version 12 c1 = 98.91 c2 = 98.99 c1 = 98.91 c2 = 98.99 c1 = 98.91 c2 = 98.99 c1 = 98.91 c2 = 98.99 98.90 99.03 98.99 99.14 98.80 99.04 98.78 98.99 0.46 0.40 -0.32 -0.46 0.16 0.07 0.08 0.00 0.10 -0.14 -0.12 -0.14 0.10 -0.13 0.12 0.00 -3.42e−4 2.52e−3 -2.35e−3 3.87e−3 − − − − − − P2 − − − -5.80e−4 keywords: calibration; camera; cloud; fig; image; metric; photogrammetry; photographs; point; processing; reference; software; − − cache: ap-5114.pdf plain text: ap-5114.txt item: #1028 of 1656 id: ap-512 author: Belyaev, B. A.; Leksikov, A. A.; Ovchinnikov, S. G.; Kraus, I.; Parshin, A. S. title: Magnetic Technique for Nondestructive Evaluation of Residual Stresses date: 2004 words: 3851 flesch: 55 summary: It is very important that the low-frequency modulating magnetic field with frequency © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 43 Czech Technical University in Prague Acta Polytechnica Vol. Layout of MW detector of magnetic field 1 kHz present in the spectrometer acts as “a magnetic shake- -up”, due to which the recurrence of good results for repeated measurements is ensured. keywords: field; fig; magnetic; sample; stray cache: ap-512.pdf plain text: ap-512.txt item: #1029 of 1656 id: ap-514 author: Ponce, A. Noriega; Behar, A. Aguado; Hernández, A. Ordaz; Sitar, V. Rauch title: Neural Networks for Self-tuning Control Systems date: 2004 words: 2983 flesch: 62 summary: In this case, instead of the net output error: � � � � � �e t u t u tu d� � (1) it is used the process output error: � � � � � �e t y t y ty r� � (2) to adjust the weighting coefficients. � It is very convenient to use a variable learning coefficient, using an expression as: � �� � �� � � abs e y (23) keywords: e t; j �; r �; u �; � e; � � cache: ap-514.pdf plain text: ap-514.txt item: #1030 of 1656 id: ap-5157 author: Gurčík, Tomáš; Kovanda, Karel title: WAAM TECHNOLOGY OPTIMIZED BY OFF-LINE 3D ROBOT SIMULATION date: 2019 words: 3671 flesch: 61 summary: The results prove that, by combining off-line welding path optimization with an optimized CMT welding process, we can achieve a stable WAAM process. The wire feeder responds to this change with a high feeding speed to stabilize welding parameters with a right welding arc length. keywords: dip; figure; line; process; technology; transfer; waam; welding; wire cache: ap-5157.pdf plain text: ap-5157.txt item: #1031 of 1656 id: ap-5159 author: Haider, Haider Tarish; Muhsen, Dhiaa Halboot; Shahadib, Haider Ismael; See, Ong Hang title: A NEW AND ADAPTIVE SECURITY MODEL FOR PUBLIC COMMUNICATION BASED ON CORRELATION OF DATA FRAMES date: 2019 words: 4577 flesch: 60 summary: Cover image Secret image NC Office Rice 0.009 Rice Office 0.008 Cameraman Text 0.006 Table 5. Results of cameraman secret image and the rice cover image. keywords: capacity; communication; cover; data; image; key; length; message; model; secret; security cache: ap-5159.pdf plain text: ap-5159.txt item: #1032 of 1656 id: ap-516 author: Zadražil, T.; Vodák, F.; Kapičková, O. title: Effect of Temperature and Age of Concrete on Strength – Porosity Relation date: 2004 words: 2491 flesch: 65 summary: 180 days confirms generally accepted hypothesis that with increasing porosity strength of the concrete decreases. AP04_1.vp 1 Introduction As known from experimental studies of concrete behav- iour at room temperature, there is a close correspondence between compressive strength S and its porosity P. Commonly this dependence is decreasing function, i.e. strength S de- creases with porosity P. There are many attempts to express the relation S � S(P) in an analytical form. keywords: age; concrete; days; porosity; temperature cache: ap-516.pdf plain text: ap-516.txt item: #1033 of 1656 id: ap-5166 author: Forejtová, Lucie; Zavadil, Tomáš; Kolařík, Ladislav; Kolaříková, Marie; Sova, Jan; Vávra, Petr title: NON-DESTRUCTIVE INSPECTION BY INFRARED THERMOGRAPHY OF RESISTANCE SPOT WELDS USED IN AUTOMOTIVE INDUSTRY date: 2019 words: 6522 flesch: 62 summary: 3/2019 Non-destructive inspection of resistance spot welds. . The standard methods used for the defect detection in resistance spot welds are the ultrasonic testing (UT) and visual testing (VT). keywords: batch; q(t; quality; resistance; spot; temperature; testing; welding; welds cache: ap-5166.pdf plain text: ap-5166.txt item: #1034 of 1656 id: ap-5172 author: Bureš, Marek; Martirosov, Sergo; Polcar, Jiří title: A NOVEL PROJECTION ALGORITHM FOR PRODUCTION LAYOUT EXTRACTION FROM POINT CLOUDS date: 2019 words: 4857 flesch: 60 summary: However, there is still a lack of software solutions for a simple and successful model creation from point cloud data or data evaluation. Furthermore, a newly developed algorithm for an extraction of specific areas of point cloud is introduced. keywords: algorithm; cloud; cloudslicer; data; figure; laser; layout; modelling; point; scanning; software cache: ap-5172.pdf plain text: ap-5172.txt item: #1035 of 1656 id: ap-5173 author: Kačur, Ján; Durdán, Milan; Laciak, Marek; Flegner, Patrik title: A COMPARATIVE STUDY OF DATA-DRIVEN MODELING METHODS FOR SOFT-SENSING IN UNDERGROUND COAL GASIFICATION date: 2019 words: 21835 flesch: 71 summary: The piecewise-linear type of MARS models better fits the training data but, in the prediction on un- trained data, better results with the piecewise-cubic type of the model (see Table 4) are obtained. Equation (31) represents a resulting piecewise-cubic type of MARS model for the prediction of the under- ground temperature. Proposal of Neural network considered for UCG data prediction. keywords: c o; calorific; coal; control; data; function; gasification; input; mars; methods; model; prediction; process; regression; results; syngas; temperature; training; ucg; underground; value; variables; � � cache: ap-5173.pdf plain text: ap-5173.txt item: #1036 of 1656 id: ap-5175 author: Saieed, Ahmed; Memon, Zeeshan Qadir; Tran, Minh Cong; King Soon, William Pao title: A MULTIPHASE FLOW LOOP DESIGN FOR INVESTIGATING THE PARTIAL PHASE SEPARATION IN A PIPE TEE date: 2019 words: 4584 flesch: 66 summary: Before the mixing, phase flow rates were 399 https://doi.org/10.14311/AP.2019.59.0399 https://ojs.cvut.cz/ojs/index.php/ap A. Saieed, Z. Q. Memon, M. C. Tran, Two-phase slug flow separation at T-junction with regular and reduced vertical side arm. keywords: air; figure; flow; flow loop; junction; loop; phase; separation; water cache: ap-5175.pdf plain text: ap-5175.txt item: #1037 of 1656 id: ap-5179 author: Yemelin, Pavel V.; Kudryavtsev, Sergey S.; Yemelina, Natalya K. title: INFORMATION AND ANALYTICAL SYSTEM FOR HAZARD LEVEL ASSESSMENT AND EMERGENCY RISK FORECASTING date: 2019 words: 4343 flesch: 39 summary: The implementation of this system will allow services of occupational safety to process and systematize all incoming information about industrial subdivisions and the enterprise as a whole, analyse and manage industrial risks, and monitor the level of industrial safety within the enterprise. The Information and Analytical System for Hazard Level Assessment and Forecasting Risk of Emergencies in the Republic of Kazakhstan allows users to work efficiently with large volumes of information and form a united analytical electronic report about the state of industrial safety. keywords: assessment; hazard; information; kazakhstan; republic; risk; safety; system cache: ap-5179.pdf plain text: ap-5179.txt item: #1038 of 1656 id: ap-518 author: Sopko, V.; Trtík, K.; Vodák, F. title: Influence of ? Irradiation on Concrete Strength date: 2004 words: 938 flesch: 61 summary: It concerns neutrons and gamma irradiation acting on concrete construc- tions and accelerating their surface and internal changes. Of the irradiation spectrum we will observe only influ- ence of gamma irradiation. keywords: concrete; irradiation; strength cache: ap-518.pdf plain text: ap-518.txt item: #1039 of 1656 id: ap-5190 author: Kramár, Tomáš; Vondrouš, Petr; Jáňa, Miroslav; Kupec, Tomáš title: JOINIG OF MG ALLOY AZ31B BY SELECTED TECHNOLOGIES date: 2019 words: 3476 flesch: 65 summary: The difficulty of joining Mg alloys is connected with the strong MgO layer, low ductility of the weld metal (WM), a presence of intermetallic phases connected with the hardness increase. With the increase of usage of Mg alloys, there is a high need of a proper method of strong metallurgical joining of Mg alloys, which is an objective of an extensive research in the world. keywords: alloys; figure; fsw; joint; laser; solder; soldering; surface; welding cache: ap-5190.pdf plain text: ap-5190.txt item: #1040 of 1656 id: ap-5191 author: Mrňa, Libor; Řiháček, Jan; Šarbort, Martin; Horník, Petr title: SOLAR ABSORBER WITH A STRUCTURED SURFACE – A WAY TO INCREASE EFFICIENCY date: 2019 words: 3157 flesch: 52 summary: Therefore, the modifi- cation of a known parallel hydroforming technology is necessary to develop, to produce solar absorbers with required structured surface (set of pyramid cavities). Formed solar absorber with the structured surface. keywords: absorber; angle; apex; efficiency; energy; figure; hydroforming; surface cache: ap-5191.pdf plain text: ap-5191.txt item: #1041 of 1656 id: ap-5194 author: Haider, Haider Tarish; Muhsen, Dhiaa Halboot; Shahadi, Haider Ismael; See, Ong Hang; Elmenreich, Wilfried title: DYNAMIC SMART GRID COMMUNICATION PARAMETERS BASED COGNITIVE RADIO NETWORK date: 2019 words: 6950 flesch: 52 summary: Cognitive radio parameters The CR provides the ability to sense the surrounding wireless environment periodically and to adapt the transmission parameters appropriately according to the objectives for the optimal utilization of spectrum bands [29]. This paper presents a cognitive radio decision engine that dynamically selects optimal radio transmission parameters for wireless home area networks (HAN) of smart grid applications via the multi-objective differential evolution (MODE) optimization method. keywords: communication; convergence; crde; doi:10.1016; fitness; function; grid; mode; modulation; objective; optimization; parameters; power; radio; system; transmission cache: ap-5194.pdf plain text: ap-5194.txt item: #1042 of 1656 id: ap-520 author: Šimáně, Č.; Vognar, M.; Chvátil, D. title: The System for Control and Stabilization of the Beam Position in the Microtron MT-25 in Prague date: 2004 words: 3248 flesch: 52 summary: Therefore a system has been designed, which will be used in the future electron transmission line, with wire probes, which can be removed from the beam after the alignment procedure has been accomplished. From the same reason the determination of the correct chan- nel position by differential wire probes, which has been tried too, gave not satisfactory results. keywords: beam; current; electron; position; probe; wire; wire probe cache: ap-520.pdf plain text: ap-520.txt item: #1043 of 1656 id: ap-5203 author: Peciar, Peter; Ružinský, Radovan; Guštafík, Adam; Karľová, Mária; Čierny, Matúš; Fekete, Roman; Peciar, Marián title: STUDY OF SAMPLES STRENGTH OF MATERIAL FORMED BY THE PROCESSES OF COMPACTION, EXTRUSION AND TUMBLING GRANULATION date: 2019 words: 4428 flesch: 57 summary: Extrusion process The basic difference between the extrusion process and the above mentioned technologies is the amount of liquid in the processed material. The physical principle for identifying the force needed to break the sample in the compaction and extrusion process is shown in Figure 10 a), the force needed to disintegrate the sample in the compaction and extrusion process is shown in Figure 10 b) and the force needed to disintegrate the sample in the granulation process is shown in Figure 10 c). keywords: compaction; dust; extrusion; figure; granulation; liquid; material; process; processes; rolls; tumbling cache: ap-5203.pdf plain text: ap-5203.txt item: #1044 of 1656 id: ap-5209 author: Askarova, Aliya; Bolegenova, Saltanat; Bolegenova, Symbat; Beketayeva, Meruyert; Maximov, Valeriy; Nugymanova, Aizhan; Šafařík, Pavel title: SIMULATION OF LOW-GRADE COAL COMBUSTION IN REAL CHAMBERS OF ENERGY OBJECTS date: 2019 words: 7041 flesch: 57 summary: 108 http://dx.doi.org/10.3923/jeasci.2014.24.28 http://dx.doi.org/10.1134/S0018143906020081 http://dx.doi.org/10.1134/S0869864314060092 http://dx.doi.org/10.1134/S0869864310030145 http://dx.doi.org/10.1016/j.proeng.2012.07.517 http://dx.doi.org/10.1016/j.proeng.2012.07.507 Acta Polytechnica 59(2):98–108, 2019 1 Introduction 2 Pulverized coal characteristics 3 Modeling of coal combustion 4 Chemical kinetics of coal combustion 5 Basic characteristics of the boiler 6 Results of numerical experiments 7 Conclusion Acknowledgements References [11] A. Askarova, V. Messerle, A. Ustimenko, et al. Numerical simulation of pulverized coal combustion in a power boiler furnace. keywords: boiler; chamber; chemical; coal; coal combustion; combustion; combustion chamber; energy; fuel; heat; kazakhstan; mass; power; reactions; simulation cache: ap-5209.pdf plain text: ap-5209.txt item: #1045 of 1656 id: ap-5210 author: Kramár, Tomáš; Tauer, Jan; Vondrouš, Petr title: WELDING OF NITINOL BY SELECTED TECHNOLOGIES date: 2019 words: 4337 flesch: 64 summary: Material and methods A homogeneous welding without a filler wire (i.e., autogenous) of NiTi wires using selected welding tech- nologies was done. The problem of laser welding is the variation of absorptivity, especially for small wires, so the surface state of the wire is important for the uniformity of results. keywords: figure; heat; niti; properties; results; shielding; welding; wire cache: ap-5210.pdf plain text: ap-5210.txt item: #1046 of 1656 id: ap-5218 author: Vrátný, Ondřej; Herman, Aleš title: IMPORTANCE OF A TYPE OF GATING SYSTEM IN INVESTMENT CASTING TECHNOLOGY date: 2019 words: 3769 flesch: 63 summary: Use of ProCAST software to model casting systems for the centrifugal casting of GTE blades made of intermetallic alloys by V.V. Smirnov and colleagues focuses on the issue of the design of ceramic moulds for castings made of intermetallic titanium alloys (TiAl) casted by the investment casting technology. In particular, the following authors also deal with simulations in the Investment casting technology: Pei-Hsing Huang and Chi-Ju Lin are authors of Computer-aided modeling and experimental verifica- tion of optimal gating system design for investment casting of precision rotor. keywords: casting; design; figure; filling; gating; investment; system; technology; variant cache: ap-5218.pdf plain text: ap-5218.txt item: #1047 of 1656 id: ap-522 author: Murray-Smith, D. J. title: Biological Systems Thinking for Control Engineering Design date: 2004 words: 5861 flesch: 44 summary: If re- cruitment of motor units is the most significant factor in the development of tension in intact muscle this feature must be incorporated into neuromuscular control system models. Keywords: biology, control systems, design, neuro-muscular system. keywords: control; control system; design; feedback; fibres; muscle; muscle spindle; properties; signal; spindle; system cache: ap-522.pdf plain text: ap-522.txt item: #1048 of 1656 id: ap-5222 author: Pačák, Tomáš; Tatíček, František; Valeš, Michal title: COMPENSATION OF SPRINGBACK IN LARGE SHEET METAL FORMING date: 2019 words: 3594 flesch: 54 summary: The methodology consists of three main parts: correct settings of virtual forming process (numerical simulation), springback analysis and springback compensation. Springback analysis and optimization in sheet metal forming. keywords: analysis; compensation; geometry; methodology; numerical; process; results; springback cache: ap-5222.pdf plain text: ap-5222.txt item: #1049 of 1656 id: ap-524 author: Lazim, Tholudin Mat; Mat, Shabudin; Saint, Huong Yu title: Computational Fluid Dynamic Simulation (CFD) and Experimental Study on Wing-external Store Aerodynamic Interference date: 2004 words: 3147 flesch: 50 summary: Research on external store installation is complex and extensive. 1: Photographs of the marked wing surface at the various projection Fig. 2: Aircraft geometry produced by Photomodeller Fig. 3: Digitized wing geometry after smoothed with CAD -Alloy that having nine conduits each on the upper and lower surface. keywords: aircraft; clean; fig; model; pressure; store; surface; vol; wing cache: ap-524.pdf plain text: ap-524.txt item: #1050 of 1656 id: ap-526 author: Sibilski, K. title: Dynamics of Micro-Air-Vehicle with Flapping Wings date: 2004 words: 5533 flesch: 58 summary: In the case when we consider the model of a entomopter treated as a mechani- cal system containing a rigid fuselage and n rigid wings fixed to the fuselage by means of three hinges, the vector general- ised co-ordinates have the following form (Fig. 3): � �q � x y zs s s n n n T, , , , , , , , , , , , , ,� � � � � � � � �1 1 1� � � . i i i� � � 0 0 0 0� � � � � . keywords: aerodynamic; body; control; flapping; flight; h �; motion; t �; wing; � q; � v; � w; � � cache: ap-526.pdf plain text: ap-526.txt item: #1051 of 1656 id: ap-5264 author: Chrášťanský, Lukáš; Šanovec, Jan; Martawirya, Yatna Yuwana; Valeš, Michal title: APPLICABILITY VERIFICATION OF AUTOFORM SOFTWARE FOR FEM SIMULATION OF MECHANICAL FIXATION OF HEMMED JOINTS date: 2019 words: 3057 flesch: 57 summary: Keywords: Hemming, FEM simulation, AutoForm, car-body, automotive industry, the law of similarity. This software is commonly used for FEM simulations during preparation stages for car-body parts produc- tion. keywords: autoform; figure; fixation; law; results; simulation; software cache: ap-5264.pdf plain text: ap-5264.txt item: #1052 of 1656 id: ap-5266 author: Kononenko, Serhii; Dobrotvorskiy, Sergey; Basova, Yevheniia; Gasanov, Magomediemin; Dobrovolska, Ludmila title: DEFLECTIONS AND FREQUENCY ANALYSIS IN THE MILLING OF THIN-WALLED PARTS WITH VARIABLE LOW STIFFNESS date: 2019 words: 4963 flesch: 57 summary: Directional cutting force model To determine the forces acting in the cross section of the sample, as the most influencing factors of undesir- able deflections, it is necessary to define the compo- nents of the cutting forces Fig. Sample deflection at point 1 and 2 by 0.17984mm and 0.15186mm respectively. keywords: amplitude; analysis; cutting; deflection; force; frequency; milling; model; response; sample; system cache: ap-5266.pdf plain text: ap-5266.txt item: #1053 of 1656 id: ap-528 author: Ota, M.; Jelínek, I. title: The Role of CAD in Enterprise Integration Process date: 2004 words: 3750 flesch: 55 summary: Enter- prise integration processes are related to the integration of enterprise software systems The data special parts created by CAD systems are product oriented data. keywords: cad; cax; communication; data; enterprise; information; integration; model; software; system cache: ap-528.pdf plain text: ap-528.txt item: #1054 of 1656 id: ap-5286 author: Chmelař, Jakub; Petr, Karel; Mikeš, Petr; Dynybyl, Vojtěch title: CYLINDRICAL ROLLER BEARING LUBRICATION REGIMES ANALYSIS AT LOW SPEED AND PURE RADIAL LOAD date: 2019 words: 6942 flesch: 60 summary: Conclusions The study enabled an insight into the sensitivity of the roller bearing inner load distribution and lubrication regimes to the variation of the operating conditions. Contact pressure and lubrication film thickness distribution. keywords: bearing; clearance; contact; distribution; effect; figure; film; load; lubricant; lubrication; roller; rolling; speed cache: ap-5286.pdf plain text: ap-5286.txt item: #1055 of 1656 id: ap-5287 author: Sysyn, Mykola; Gerber, Ulf; Nabochenko, Olga; Li, Yangyang; Kovalchuk, Vitalii title: INDICATORS FOR COMMON CROSSING STRUCTURAL HEALTH MONITORING WITH TRACK-SIDE INERTIAL MEASUREMENTS date: 2019 words: 5659 flesch: 53 summary: 2/2019 Indicators for common crossing monitoring [30] G. Lederman, S. Chen, J. Garrett, et al. Point colours correspond to common crossing lifetime in passed megatons of trains. keywords: acceleration; analysis; crossing; features; figure; impact; lifetime; monitoring; principal; railway; regression; spectral; system; track cache: ap-5287.pdf plain text: ap-5287.txt item: #1056 of 1656 id: ap-530 author: Petrov, A. V.; Stepanov, Y. G.; Shmakov, M. V. title: Development of a Technique and Method of Testing Aircraft Models with Turboprop Engine Simulators in a Small-scale Wind Tunnel - Results of Tests date: 2004 words: 3097 flesch: 42 summary: The tests were conducted at flow velocities of V � � 20 to 50 m/s in the ranges of angles of attack � � �6 to 20 deg, sideslip angles of � � �16 to 16 deg and blade loading coefficient of B � 0 to 2.8. The effectiveness of the rudder on the model in takeoff configuration at an angle of attack of � � �5 and B �2 increases by a factor of 1.6–1.7 at � �0, and by a factor of 1.8–2.1 at � � �6 through �10 deg. keywords: aerodynamic; aircraft; characteristics; deg; model; � � cache: ap-530.pdf plain text: ap-530.txt item: #1057 of 1656 id: ap-532 author: Vroom, R. W.; van Breemen, E. J. J.; van der Vegte, W. F. title: Developing a Conceptual Design Engineering Toolbox and its Tools date: 2004 words: 6511 flesch: 54 summary: � Phase 2: Conceptual design (Product design phase). [3] Roozenburg N. F. M., Eekels J.: Product design: fundamen- tals and methods. keywords: design; designer; det; engineering; knowledge; modelling; process; product; support; tools; use; work cache: ap-532.pdf plain text: ap-532.txt item: #1058 of 1656 id: ap-534 author: Valášek, M.; Steinbauer, P.; Šika, Z.; Zdráhal, Z. title: Knowledge Support of Simulation Model Reuse date: 2004 words: 3596 flesch: 46 summary: Then we describe the development of simulation model of the TriJoint machine tool as a reuse development where the simulation model of Dyna-M is reused. Keywords: Simulation model, reuse, knowledge management, machine tool. keywords: clockwork; development; knowledge; model; simulation; simulation model; tool; world cache: ap-534.pdf plain text: ap-534.txt item: #1059 of 1656 id: ap-536 author: Studničková, M. title: The Effect of Pedestrian Traffic on the Dynamic Behavior of Footbridges date: 2004 words: 2510 flesch: 52 summary: The load model of a continuous stream of pedestrians can be expressed in the form: for vertical vibrations � � � �q k f f tsv v v v�12 6 2. sin � [Nm�2] (4) for horizontal vibrations � � � �q k f f tsh h h h�12 6 2. sin � [Nm�2] (5) where all symbols are as already defined. due to a single person can be ex- pressed with sufficient accuracy as the sum of the static force (the weight of a person) and the first three harmonic compo- nents of the excitation force [3] � � � � � � F t G G f t G f t G f t � � � � � � � 1 2 2 3 3 2 4 6 sin sin sin � � � � � p p p (1) where G Weight of a person (usually G � 800 N) keywords: fig; footbridge; frequency; vertical; vibrations; � � cache: ap-536.pdf plain text: ap-536.txt item: #1060 of 1656 id: ap-5374 author: Ficker, Tomáš title: GENERAL MODEL OF RADIATIVE AND CONVECTIVE HEAT TRANSFER IN BUILDINGS: PART I: ALGEBRAIC MODEL OF RADIATIVE HEAT TRANSFER date: 2019 words: 7463 flesch: 64 summary: The zero sum of radiative heat energies is the general property of closed systems and follows from the first and second laws of thermodynamics. 1. Introduction Heat radiation represents a dominant transfer mechanism of heat energy inside buildings. keywords: enclosure; energy; heat; matrix; method; radiosity; surfaces; transfer cache: ap-5374.pdf plain text: ap-5374.txt item: #1061 of 1656 id: ap-5375 author: Ficker, Tomáš title: GENERAL MODEL OF RADIATIVE AND CONVECTIVE HEAT TRANSFER IN BUILDINGS: PART II: CONVECTIVE AND RADIATIVE HEAT LOSSES date: 2019 words: 8386 flesch: 60 summary: Keywords: Convective heat transfer, radiative heat transfer, room envelope, heat losses, iterative optimization. Introduction The present paper continues the previous contribution entitled General model of radiative and convective heat transfer in buildings: Part I: Algebraic model of radiative heat transfer [1]. keywords: ceiling; coefficients; convective; heat; heat transfer; losses; radiative; surface; transfer cache: ap-5375.pdf plain text: ap-5375.txt item: #1062 of 1656 id: ap-5377 author: Piorecký, Marek; Štrobl, Jan; Krajča, Vladimír title: AUTOMATIC EEG CLASSIFICATION USING DENSITY BASED ALGORITHMS DBSCAN AND DENCLUE date: 2019 words: 8003 flesch: 65 summary: Objects are, in our case, the segments of EEG signals. The program WF exploits K-means in clinical practice and we can use them to compare K-means with density based algorithms. 2.4. keywords: activity; algorithm; artefacts; classes; classification; data; dbscan; denclue; density; eeg; means; number; objects; segments; signal cache: ap-5377.pdf plain text: ap-5377.txt item: #1063 of 1656 id: ap-538 author: Fošumpaur, P.; Satrapa, L. title: Control of Systems of Reservoirs with the Use of Risk Analysis date: 2004 words: 2418 flesch: 50 summary: 4 Conclusions We studied the use of risk analysis to quantify a suitable set of criteria for multi-objective optimisation of reservoirs and reservoir systems, which are usually intended to satisfy 54 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 44 No. AP04_2web.vp 1 Introduction In the field of controlling of reservoirs systems, it is often very difficult to formulate a reliable system of criteria. keywords: analysis; control; criteria; reservoirs; risk; system; water cache: ap-538.pdf plain text: ap-538.txt item: #1064 of 1656 id: ap-5381 author: Koska, Lukáš; Jadlovská, Slávka; Vošček, Dominik; Jadlovská, Anna title: INVERTED PENDULUM WITH LINEAR SYNCHRONOUS MOTOR SWING UP USING BOUNDARY VALUE PROBLEM date: 2019 words: 5076 flesch: 53 summary: The development of the IPMaC as a framework for solving analysis/control problems of inverted pendulum systems also enabled us to unify and generalize the nomenclature and la- belling of input/output/state variables and physical 458 https://doi.org/10.14311/AP.2019.59.0458 https://ojs.cvut.cz/ojs/index.php/ap http://matlab.fei.tuke.sk/underactuated http://matlab.fei.tuke.sk/underactuated vol. Modelling of classical and rotary inverted pendulum systems–a generalized approach. keywords: cart; control; input; model; pendulum; swing; system; time; trajectories; trajectory cache: ap-5381.pdf plain text: ap-5381.txt item: #1065 of 1656 id: ap-5383 author: Salačová, Šárka; Wachulak, Przemyslaw; Tatíček, Milan; Vrbová, Miroslava title: GAS-PUFF TARGET FOR LASER-PRODUCING PLASMA SXR SOURCE date: 2019 words: 2839 flesch: 67 summary: Modeling of ns and ps laser-induced soft X-ray sources using nitrogen gas puff target. In Figure 6, we can see that if the pressure equals or is higher than P = 10bar, the mass density is stable for the new nozzle and an increase in gas pressure will not result in an increase in mass density. keywords: density; gas; laser; mass; nozzle; plasma; puff; target cache: ap-5383.pdf plain text: ap-5383.txt item: #1066 of 1656 id: ap-5393 author: Hynek, Petr; Kreibich, Viktor; Firt, Roman title: SUITABLE PRODUCTION TOOLS SELECTION WITH THE USE OF EVOLUTIONARY ALGORITHMS date: 2020 words: 3047 flesch: 60 summary: This matrix generates a set of several numbers of solutions depending on other parameters, such as the lowest price, the lowest number of used welding guns, etc. Based on the simulation results, a matrix, which defines the possibility of using given manufacturing tools (in this case welding guns are considered) to connect the plates using the electrical resistance spot welding process, is created. keywords: figure; guns; production; selection; simulation; solution; welding cache: ap-5393.pdf plain text: ap-5393.txt item: #1067 of 1656 id: ap-5395 author: Luňáčková, Barbara; Mohyla, Marek; Pinka, Miroslav title: THE EFFECT OF SOIL GRAIN SIZE ON THE DEFORMATION PROPERTIES OF REINFORCED GEOCELL LAYERS date: 2019 words: 3637 flesch: 55 summary: Many researchers have observed the bearing capac- ity of geocell reinforced soils (e.g., [5, 6, 15, 16, 18–20]). The effect of the loading plate size and other factors on the response from geocell reinforced backfill was inves- tigated by Mehrjardi keywords: aggregate; backfill; deformation; geocell; load; modulus; plate; ratio; size; soil; test cache: ap-5395.pdf plain text: ap-5395.txt item: #1068 of 1656 id: ap-5399 author: Solnař, Stanislav; Dostál, Martin title: HEAT FLUX JUMP METHOD AS A POSSIBILITY OF CONTACTLESS MEASUREMENT OF LOCAL HEAT TRANSFER COEFFICIENTS date: 2019 words: 6325 flesch: 59 summary: Keywords: Heaviside function, heat transfer coefficient, experimental method, heat jump method. Heat transfer coefficients cause a temperature field to form on the thin plate, which can then be used to calculate local heat transfer coefficient values. keywords: coefficient; heat; heat transfer; method; temperature; transfer; transfer coefficient; values; wall cache: ap-5399.pdf plain text: ap-5399.txt item: #1069 of 1656 id: ap-540 author: Zagursky, V.; Zarumba, I.; Riekstinsh, A. title: A coding and On-Line Transmitting System date: 2004 words: 1809 flesch: 60 summary: In [1], an increasing number of channels lead to a proportional increase of acquisition time. The transmitter (see Fig. 1) has 64 identical voltage to time interval converters. keywords: channels; fig; interval; system; time; transmission cache: ap-540.pdf plain text: ap-540.txt item: #1070 of 1656 id: ap-5400 author: Pazderka, Jiří; Reiterman, Pavel title: CZECH WW2 CONCRETE FORTIFICATIONS: CORROSION PROCESSES AND REMEDIATION METHOD BASED ON CRYSTALLIZING COATING date: 2019 words: 6040 flesch: 54 summary: However, concrete is not perceived as a historical material by the public [4], hence the protection of concrete structures is very complicated. The main problem of concrete structures is the pres- ence of water, because most of the harmful degrada- tion processes are closely related to that keywords: air; building; bunker; concrete; czech; figure; materials; measurement; moisture; protection; samples; structures; surface; water cache: ap-5400.pdf plain text: ap-5400.txt item: #1071 of 1656 id: ap-5414 author: Al-Rkaby, Alaa Hussein Jassim title: EVALUATING SHEAR STRENGTH OF SAND- GGBFS BASED GEOPOLYMER COMPOSITE MATERIAL date: 2019 words: 3505 flesch: 58 summary: In addition to the strength properties, studies car- ried out on geopolymer based soil showed that treated soils have a high durability In this paper, a series of unconfined compression and triaxial tests were conducted on sand and sand - ground granulated blast-furnace slag (GGBFS) based geopolymer. keywords: activator; ash; content; geopolymer; ggbfs; sand; soil; strength cache: ap-5414.pdf plain text: ap-5414.txt item: #1072 of 1656 id: ap-5416 author: Heraldy, Eddy; Rahmawati, Fitria; Ardiyanti, Dwi; Nurmawanti, Ika title: FABRICATION OF Mg-Zn-Al HYDROTALCITE AND ITS APPLICATION FOR Pb2+ REMOVAL date: 2019 words: 6415 flesch: 66 summary: Catalysis Today 158:459–463, 2010. doi:10.1016/j.cattod.2010.07.013. 271 http://dx.doi.org/10.1016/j.cattod.2009.08.020 http://dx.doi.org/10.1016/j.jece.2015.09.015 http://dx.doi.org/10.22146/ijc.21190 http://dx.doi.org/10.1016/j.foodchem.2014.03.098 http://dx.doi.org/10.1016/j.molliq.2015.07.044 http://dx.doi.org/10.1016/j.jaap.2016.06.018 http://dx.doi.org/10.1016/j.cattod.2010.07.013 Acta Polytechnica 59(3):260–271, 2019 1 Introduction 2 Material and methods 2.1 Materials 2.2 Procedure 2.2.1 Fabrication of Mg-Zn-Al HT adsorbents 2.2.2 Batch adsorption experiments design 3 Results and discussion 3.1 Characterization of Mg-Zn-Al HT 3.1.1 XRD analysis 3.1.2 FTIR analysis 3.1.3 Mg-Zn-Al HT optimization 3.1.4 Characterization of metal oxide formation from Mg-Zn-Al HT 3.2 Effectiveness test of Mg-Zn-Al HT and its oxide to Pb2+ adsorption 3.3 Adsorption studies of Pb2+ using Mg-Zn-Al HT oxide 3.3.1 Optimum pH determination of Pb(NO3)2 solution 3.3.2 Effect of contact time 3.3.3 Effect of initial concentration 3.3.4 Characterization of Mg-Zn-Al HT oxide adsorbent after Pb2+ adsorption 3.4 Determination of adsorption kinetics 3.5 Determination of adsorption isotherm 4 Conclusion Acknowledgements References The diffractogram of (a) JCPDS Mg-Al HT (b) JCPDS Zn-Al HT (c) JCPDS MgO (d) JCPDS ZnO (e) Mg-Zn-Al HT and (f) Mg-Zn-Al HT oxide. keywords: adsorbent; adsorption; al ht; effect; ions; oxide; pb2; solution cache: ap-5416.pdf plain text: ap-5416.txt item: #1073 of 1656 id: ap-5418 author: Zuhair, ; Suwoto, ; Setiadipura, Topan; Su'ud, Zaki title: STUDY ON MCNP6 MODEL IN THE CALCULATION OF KINETIC PARAMETERS FOR PEBBLE BED REACTOR date: 2020 words: 5152 flesch: 59 summary: Keywords: kinetic parameters, pebble bed reactor, uranium loading, 235U enrichment, H/D ratio. Parameter and core specification of pebble bed reactor [10]. keywords: bed; bed reactor; core; enrichment; fuel; graphite; loading; model; neutron; parameters; pebble; reactor; uranium cache: ap-5418.pdf plain text: ap-5418.txt item: #1074 of 1656 id: ap-542 author: Zagursky, V.; Riekstinsh, A. title: Speech Signal Recovery in Communication Networks date: 2004 words: 2685 flesch: 60 summary: This procedure was referred to in [6] as non-adaptive, as well as the prediction with � � 1. The error can be minimized by applying the adaptive ap- proach, as was demonstrated in [6], by calculating the error for interpolation with the use of (4) and by determining the minimal error depending on the coefficients a�1 and a+1, we will obtain: � �a a a r rXX XXopt � � � �� � � 1 1 11 1 2( ) ( ) , (7) where r n R n RXX XX XX( ) ( ) ( )� 0 is the correlation coefficient. keywords: error; interpolation; order; recovery; samples; signal; � � cache: ap-542.pdf plain text: ap-542.txt item: #1075 of 1656 id: ap-544 author: Čulík, J. title: Simulation of Scoliosis Treatment Using a Brace date: 2004 words: 4498 flesch: 67 summary: The spinal curvature is stored in the computer as the following three functions � � � � � �y y x z z x x� � �, , � � , (1) where � is the turning based on the x-axis. Let us calculate the parameters C E h C E hP P 1 2 6 � �, , C C b C C C C b C C1 1 1 2 2 2 2 3 1 1 1 2 * *, ,� � � � C C b C b C C C C b b C C3 1 2 2 1 2 4 2 2 2 3 1 1 3 1 3 2 * *,� � � � � , where EP, h, b are the modulus of elasticity, thickness and width of the compressed soft tissue. keywords: brace; l l; spinal; spine; t �; treatment; trunk; � k; � x; � � cache: ap-544.pdf plain text: ap-544.txt item: #1076 of 1656 id: ap-546 author: Dušek, J.; Dostálek, M. title: Image Analysis of Eccentric Photorefraction date: 2004 words: 2370 flesch: 54 summary: 5 Conclusions We have designed a universal system for measuring of synkinetic reaction (accommodation and convergence) based on I. PI position and eccentric photorefraction. Image analysis of the recorded sequences is performed in order to obtain curves of basic eye reactions (accommodation and convergence). keywords: accommodation; analysis; convergence; image; lens; light; system cache: ap-546.pdf plain text: ap-546.txt item: #1077 of 1656 id: ap-5475 author: Yusuff, Adeyinka Sikiru; Ewere, Donatus title: EXTRACTION AND EVALUATION OF OIL FROM GREEN ALGAE CLADOPHORA GLOMERATA BY HEXANE/ETHER MIXTURE date: 2020 words: 3705 flesch: 58 summary: The pH value of the algal oil was determined to be 7.18 ± 0.01 and this indicates that the oil is neutral, which is in an agreement with previous studies on oil extraction from algae by many researchers Optimization of oil extraction from Leucaena leucocephala seed as an alternative low-grade feedstock for biodiesel production. keywords: acid; algal; extraction; fatty; oil; particle; size; solvent; temperature; time; yield cache: ap-5475.pdf plain text: ap-5475.txt item: #1078 of 1656 id: ap-548 author: Telfer, D. J.; Spencer, J. W.; Jones, G. R.; Humphries, J. E. title: A Novel Approach to Power Circuit Breaker Design for Replacement of SF6 date: 2004 words: 2809 flesch: 50 summary: The noticeable features are: (a)Relatively small dependence upon gas pressure with SF6. It will also be extended to other appropriate polymeric materi- als, with suitable background gases and gas pressures, and electromagnetic arc driving forces in order to enhance the production of the suitable chemical species. keywords: arc; current; extinction; fig; gases; half; sf6 cache: ap-548.pdf plain text: ap-548.txt item: #1079 of 1656 id: ap-5482 author: Pramanik, Santiranjan; Thipse, Sukrut Shrikant title: KINEMATIC SYNTHESIS OF CENTRAL-LEVER STEERING MECHANISM FOR FOUR WHEEL VEHICLES date: 2020 words: 3045 flesch: 69 summary: Introduction There are several types of steering mechanisms used for four-wheel vehicles. Optimal synthesis of steering mechanism including transmission angles. keywords: angle; bar; figure; mechanism; steering; wheel cache: ap-5482.pdf plain text: ap-5482.txt item: #1080 of 1656 id: ap-5489 author: Úradníček, Juraj; Musil, Miloš; Bachratý, Michal title: EIGENVALUES EVALUATION OF GENERALLY DAMPED ELASTIC DISC BRAKE MODEL LOADED WITH NON-CONSERVATIVE FRICTION FORCE date: 2020 words: 3131 flesch: 54 summary: Re- liability, braking power and a fluent operation are important properties of brake systems. Thus, an unstable behaviour of mechanical systems can also be caused by a dissipation induced instability, which was, in the case of brake system, pointed out in the work of Hoffman and Gaul in 2003 keywords: brake; damped; damping; figure; friction; non; system cache: ap-5489.pdf plain text: ap-5489.txt item: #1081 of 1656 id: ap-5492 author: Alabbasi, Hesham Adnan; Abboud, Izz Kadhum; Hasan, Fadhil Sahib title: PERFORMANCE ANALYSIS OF QUADRATURE CHAOS SHIFT date: 2020 words: 7127 flesch: 64 summary: The data rate and energy saving improvement factor in a percent form is derived and compared with the QCSK and DCSK systems. Evaluating the data-rate and energy saving im- provement, compared to conventional QCSK and DCSK systems. keywords: ber; channel; chaos; dcsk; information; keying; performance; qcsk; reference; shift; signal; system cache: ap-5492.pdf plain text: ap-5492.txt item: #1082 of 1656 id: ap-550 author: Murín, J.; Kropáč, M.; Fric, R. title: Numerical Analysis of the Temperature Field in Luminaires date: 2004 words: 2484 flesch: 51 summary: Surface emissivity 0.7�0.9 Bulk temperature 19 °C Coef. of convection 7.5�9.5 Table 3: Expected parameters of convection and radiation of the heat Fig. 8: Temperature field on the surface of the choke coil (� � 8.5 W/m2K; � � 0.8) 2/2004 Surface emissivity 0.7 0.8 0.9 Coef. of convection 7.5 8.5 9.5 Final maximum temperature [ °C] 72.9 67,3 62.9 Final minimum temperature [ °C] 55.1 50 45.9 Table 4: Temperature of the choke coil in extreme cases Fig. 9: Temperature field of the iron magnetic circuit (� � 8.5 W/m2K; � � 0.8) Fig. keywords: choke; coil; heat; surface; temperature; � � cache: ap-550.pdf plain text: ap-550.txt item: #1083 of 1656 id: ap-5503 author: Rogovskii, Ivan L.; Titova, Liudmyla L.; Davydenko, Oleksii O.; Trokhaniak, Viktor I.; Trokhaniak, Oleksandra M. title: TECHNOLOGY OF PRODUCING REINFORCED CONCRETE COLUMNS OF CIRCULAR CROSS-SECTIONAL AND INVESTIGATION OF THEIR STRAIN-STRESS STATE AT TRANSVERSE-LONGITUDINAL BENDING date: 2019 words: 3903 flesch: 57 summary: Bearing capacity of compressed reinforced concrete columns with high-strength non-stressed reinforcement. Load and moment interaction diagram for circular concrete columns reinforced with gfrp bars and gfrp helices:. keywords: bending; ccsc; column; compression; concrete; load; pre; reinforcement; strain; transverse cache: ap-5503.pdf plain text: ap-5503.txt item: #1084 of 1656 id: ap-5511 author: Sysyn, Mykola; Nabochenko, Olga; Gerber, Ulf; Kovalchuk, Vitalii; Petrenko, Oleksiy title: COMMON CROSSING CONDITION MONITORING WITH ON BOARD INERTIAL MEASUREMENTS date: 2019 words: 5728 flesch: 51 summary: The maximal values are used as spectral kurtosis features. Time domain and spectral features from vertical acceleration (above) and wavelet coefficients (down) Abbr. keywords: acceleration; analysis; condition; crossing; features; figure; frequency; indicator; lifetime; measurement; monitoring; railway; spectral; track; wavelet cache: ap-5511.pdf plain text: ap-5511.txt item: #1085 of 1656 id: ap-5513 author: Halder, Amlan Kanti; Paliathanasis, Andronikos; Leach, Peter Gavin Lawrence title: SIMILARITY SOLUTIONS AND CONSERVATION LAWS FOR THE BEAM EQUATIONS: A COMPLETE STUDY date: 2020 words: 6054 flesch: 72 summary: We study the similarity solutions and we determine the conservation laws of various forms of beam equations, such as Euler-Bernoulli, Rayleigh and Timoshenko-Prescott. Keywords: Symmetry analysis, singularity analysis, conservation laws, beam equation. keywords: beam; bernoulli; conservation; equation; euler; form; lie; point; solutions; symmetries cache: ap-5513.pdf plain text: ap-5513.txt item: #1086 of 1656 id: ap-552 author: Nikolovski, S.; Barić, T. title: Computer Aided Design of Transformer Station Grounding System Using CDEGS Software date: 2004 words: 2722 flesch: 54 summary: Maxwell’s equations can be used to describe electric field E and magnetic field H in terms of scalar � and vector potential A: � � � � � � � 1 A (1) E A� � � �j� � (2) H � �� 1 � x A (3) � � � �� � j (4) where: � complex conductivity of the medium, � permeability of the medium, � conductivity of the medium, � permittivity of the medium. I V I T Y (SYSTEM INFORMATION SUMMARY) System of Units: Meters Soil Type Selected: Multi-Layer Horizontal RMS error between measured and calculated: 2.08052 % resistivities Soil layer resistivity calculated by RESAP is the initial data for a further study. keywords: fig; grounding; resistivity; soil; system; touch; transformer; � � cache: ap-552.pdf plain text: ap-552.txt item: #1087 of 1656 id: ap-5527 author: Amin, Muhammad; Birawidha, David Candra; Isnugroho, Kusno; Hendronursito, Yusup; Sumardi, Slamet; Ario, Septa; Syafriadi, Syafriadi; Al-Muttaqii, Muhammad title: THE INFLUENCE OF BASALT MINERALS AS CEMENT SUBSTITUTION MATERIALS IN MORTAR date: 2019 words: 3250 flesch: 62 summary: The porosity and absorption properties of OPC cement mortar (a and b) and PCC cement mortar (c and d) with variation concentration of basalt. Compressive strength of OPC cement mortar with variations concentration. keywords: absorption; basalt; calcination; cement; mortar; opc; porosity; powder; strength cache: ap-5527.pdf plain text: ap-5527.txt item: #1088 of 1656 id: ap-5529 author: Onderová, Iveta; Čačko, Viliam; Kolláth, Ľudovít; Šooš, Ľubomír; Smelík, Andrej; Varga, Alexander title: PNEUMATIC SYSTEMS FOR AUTOMATIC SORTING EQUIPMENT date: 2019 words: 3281 flesch: 58 summary: Automatic system for laser cutting machines The aim of the project was to create a modular auto- matic handling system for the productive operation of MSF laser cutting machines. [1–3] In addition to the development of the control sys- tem for the individual modules of these nodes, the development of an information system for the produc- tion management of such a node or group of nodes creating automatic cutting workplaces was carried out. keywords: cutting; deflection; laser; material; parts; position; sorting; suction; system cache: ap-5529.pdf plain text: ap-5529.txt item: #1089 of 1656 id: ap-5532 author: Bošanský, Michal; Patzák, Bořek title: PARALLELIZATION OF ASSEMBLY OPERATION IN FINITE ELEMENT METHOD date: 2020 words: 7293 flesch: 56 summary: Matrix assembly total times with dividing to evaluation of local matrix assembly times and localization into global matrix assembly times of the benchmark problem considered (Jete 3M). The performance of individual strategies of the vector assembly (in terms of the achieved speedup versus increasing the number of processors) for Jete250k test are presented in Fig- ure 4 and for matrix assembly in Figure 8. keywords: algorithm; assembly; assembly omp; element; matrix; memory; number; omp; pth; synchronization; threads; vector cache: ap-5532.pdf plain text: ap-5532.txt item: #1090 of 1656 id: ap-5534 author: Kuznetsov, Alexandr; Oleshko, Oleg; Kuznetsova, Kateryna title: ENERGY GAIN FROM ERROR-CORRECTING CODING IN CHANNELS WITH GROUPING ERRORS date: 2020 words: 4629 flesch: 59 summary: Let us fix the average error burst length lav and error probability per bit P0. It allows to describe the error behaviour in the communication channel and to develop practical recommendations on using error correcting codes. keywords: channels; code; egc; error; lav; length; model; probability cache: ap-5534.pdf plain text: ap-5534.txt item: #1091 of 1656 id: ap-5536 author: Kolaříková, Marie; Chotěborský, Rostislav; Hromasová, Monika; Linda, Miloslav title: THE CHARACTERISTICS OF Al-Si COATING ON STEEL 22MnB5 DEPENDING ON THE HEAT TREATMENT date: 2019 words: 3426 flesch: 64 summary: [13] studied the phase formation at the soft steel interface and AlSi coating (with a silicon concentration of 5 and 10%) at temperatures of 650-700 °C. The Hysitron TI 950 TriboIndenter™ nanoin- dentation system was used to analyse the mechanical properties of coatings, such as reduced elastic modu- lus and indentation hardness (HIT, according to ISO 14577-1). keywords: coating; figure; heat; phase; steel; treatment cache: ap-5536.pdf plain text: ap-5536.txt item: #1092 of 1656 id: ap-554 author: Bányai, T. title: Recycling and Networking date: 2004 words: 4844 flesch: 42 summary: 1: Structure of collection systems have to be considered. 5 Conception of the design of collection systems When an optimal logistic collection system is being formed, the internal and external logistic aspects need to be considered. keywords: collection; collection system; disassembly; environmental; logistic; operation; products; recycling; system; users; waste cache: ap-554.pdf plain text: ap-554.txt item: #1093 of 1656 id: ap-5541 author: Al-Awad, Nasir Ahmad title: MODEL REFERENCE ADAPTIVE CONTROL-BASED GENETIC ALGORITHM DESIGN FOR HEADING SHIP MOTION date: 2020 words: 4903 flesch: 63 summary: [4] have proposed two basic linear math- ematical models in light of the model of Davidson and Schiff, Nomoto’s models have been utilized broadly by control engineers for an investigation and outline of ship controllers. Ship steering control system. keywords: adaptive; control; controller; design; figure; heading; journal; model; nomoto; reference; ship; steering; time cache: ap-5541.pdf plain text: ap-5541.txt item: #1094 of 1656 id: ap-5544 author: Ikponmwosa, Efe Ewaen; Ehikhuenmen, Samuel Onosedeba; Irene, Karieren Kate title: COMPARATIVE STUDY AND EMPIRICAL MODELLING OF PULVERIZED COCONUT SHELL, PERIWINKLE SHELL AND PALM KERNEL SHELL AS A POZZOLANS IN CONCRETE date: 2019 words: 7427 flesch: 61 summary: Strength activity index (SAI) on pozzolans blended concrete The strength activity index (SAI) measures the poz- zolanicity of cement replacement materials (CRMs) and the measure is based on the variation of the strength with respect to its control in percent. Mathematical model The results of and the experimental data for various properties of pozzolan blended concrete were anal- ysed using a bilinear interpolation method to develop mathematical models for predicting parameters with respect to its variables. keywords: ash; concrete; curing; level; materials; pcs; pozzolans; ppks; pps; replacement; replacement level; shell; standard; strength cache: ap-5544.pdf plain text: ap-5544.txt item: #1095 of 1656 id: ap-5549 author: Hron, Vojtěch; Halounová, Lena title: AUTOMATIC RECONSTRUCTION OF ROOF MODELS FROM BUILDING OUTLINES AND AERIAL IMAGE DATA date: 2019 words: 7307 flesch: 58 summary: A global solution to topological reconstruction of building roof models from airborne lidar point clouds. Automatic extraction of building roofs using LIDAR data and multispectral imagery. keywords: building; building models; clouds; data; edges; height; hips; image; models; outlines; point; reconstruction; ridge; roof cache: ap-5549.pdf plain text: ap-5549.txt item: #1096 of 1656 id: ap-5556 author: Salawu, Saheed; Sobamowo, Gbeminiyi; Sadiq, Obanishola title: INVESTIGATION OF THE DYNAMIC BEHAVIOUR OF NON-UNIFORM THICKNESS CIRCULAR PLATES RESTING ON WINKLER AND PASTERNAK FOUNDATIONS date: 2020 words: 8425 flesch: 66 summary: c2 − 32a2 10 + 32a1 10 + 36a1 14kp 7 − 36a2 14kp 7 + 36a14kp 7 ) c34+ + 1 24  ( 112a1 10 − 112a2 10 + 54a14kp 7 ∂r + 3m2 r3 w(r, t) } + ∂2g(r) ∂r2 { ∂2w(r, t) ∂r2 + ν ( 1 r ∂w(r, t) ∂r − m2 r2 w(r, t) )} − ks ∂2w(r, t) ∂r2 − ks 1 r ∂w(r, t) keywords: circular; foundation; free; frequency; method; plate; thickness; vibration cache: ap-5556.pdf plain text: ap-5556.txt item: #1097 of 1656 id: ap-556 author: Chudý, P. title: Response of a Light Aircraft Under Gust Loads date: 2004 words: 2938 flesch: 64 summary: For single Input/Output systems, the PSD function of the response quantity, �(�), is related to the PSD function of the source, �(�), by � � � �( ) ( ) ( )� H i 2 � (2) where H i( )� is the frequency response function. 6: Power spectral density of T at the wing root Type of response A (N�m) N0 (Hz) M1 0.502 20.23 M2 8.263 3.105 T 0.389 20.12 Table 3: Summary of the probability parameters at the wing root station Altitude 1000.0 m True Air Speed 44.0 m�s�1 Dynamic pressure 1076.06 Pa Mach number 0.1308 Gust Velocity, U0 15.0 m�s�1 Table 4: Flight conditions for discrete gust analysis These points were placed at the CG and at the wing root. keywords: analysis; fig; gust; loads; response; time; wing; � � cache: ap-556.pdf plain text: ap-556.txt item: #1098 of 1656 id: ap-5565 author: Agustina, Tuty Emilia; Teguh, Dedi; Wijaya, Yourdan; Mermaliandi, Febrian; Bustomi, Ahmad; Manalaoon, Jantan; Theodora, Gita; Rebecca, Tessa title: STUDY OF SYNTHETIC DYE REMOVAL USING FENTON/TiO2, FENTON/UV, AND FENTON/TiO2/UV METHODS AND THE APPLICATION TO JUMPUTAN FABRIC WASTEWATER date: 2019 words: 6293 flesch: 59 summary: The results of Fenton process are considered ineffective, therefore, the use of Fenton reagents needs to be combined with other advanced oxidation methods, namely UV light, TiO2 catalyst, or photocatalyst of UV/TiO2. As the a results, the photo-Fenton process was supe- rior to Fenton process. keywords: cod; colour; degradation; fenton; method; process; ratio; reaction; removal; tio2; treatment; wastewater cache: ap-5565.pdf plain text: ap-5565.txt item: #1099 of 1656 id: ap-558 author: Slavík, S. title: Preliminary Determination of Propeller Aerodynamic Characteristics for Small Aeroplanes date: 2004 words: 4248 flesch: 67 summary: � � � � � ) cos( ) ,2 �i (5) and the angle of the real incoming flow �: � � � � � � � � � ��� � � � � � � �0 7 0 7 0 7 0 7 . . � � � �0 7 0 7 (8) Calculation of the thrust coefficient at given advance ra- tios requires not only the lift cl(�) and drag cd(�) blade curves but also the relationship to determine angle of attack �. keywords: blade; drag; factor; lift; lock; power; propeller; thrust; � � cache: ap-558.pdf plain text: ap-558.txt item: #1100 of 1656 id: ap-5588 author: Čížek, Michal; Pátek, Zdeněk title: ON CFD INVESTIGATION OF RADIAL CLEARANCE OF LABYRINTH SEALS OF A TURBINE ENGINE date: 2020 words: 3526 flesch: 66 summary: The aim is to describe numerical calculations of fluid flow in labyrinth seals and evaluate the calculated data for different settings of radial clearance of labyrinth seals. 1/2020 On CFD Investigation of radial clearance of labyrinth seals. . keywords: clearance; engine; fig; flow; pressure; seals; teeth; turbine cache: ap-5588.pdf plain text: ap-5588.txt item: #1101 of 1656 id: ap-5590 author: Lojda, Vít; Krejčiříková, Hana title: TRACK GAUGE STABILITY UNDER EFFECT OF SLEEPER THERMAL EXPANSION date: 2019 words: 5077 flesch: 54 summary: The main objective of this article is to describe the role of the thermal expansion, represented by a coefficient of linear thermal expansion α, in the devel- opment of polymer railway sleepers and to consider the range of α with respect to their production. [23] where the limit value of the coefficient α for polymer sleepers required by American Rail- way Engineering and Maintenance-of-Way Association (AREMA) is 7.5 · 10−5 K−1 keywords: coefficient; expansion; gauge; polymer; railway; rep; rep_c; sleeper; temperature; track cache: ap-5590.pdf plain text: ap-5590.txt item: #1102 of 1656 id: ap-5592 author: Gabrišová, Ľudmila; Peciar, Peter; Macho, Oliver; Juriga, Martin; Galbavá, Paulína; Nižnanská, Žofia; Kubinec, Róbert; Valent, Ivan; Peciar, Marián title: THE DEVELOPMENT OF A NEW ADSORPTION-DESORPTION DEVICE date: 2020 words: 4663 flesch: 55 summary: Acta Polytechnica DOI:10.14311/AP.2020.60.0455 Acta Polytechnica 60(6):455–461, 2020 © Czech Technical University in Prague, 2020 available online at https://ojs.cvut.cz/ojs/index.php/ap THE DEVELOPMENT OF A NEW ADSORPTION-DESORPTION DEVICE Ľudmila Gabrišováa,∗, Peter Peciara, Oliver Machoa, Martin Jurigaa, Paulína Galbaváb, Žofia Nižnanskáb, Róbert Kubinecb, Ivan Valentc, Marián Peciara a Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, Institute of Process Engineering, Námestie Slobody 17, 812 31 Bratislava, Slovakia b Comenius University in Bratislava, Faculty of Natural Sciences, Institute of Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia c Comenius University in Bratislava, Faculty of Natural Sciences, Department of Physical and Theoretical Chemistry, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia ∗ corresponding author: ludmila.gabrisova@stuba.sk Abstract. Keywords: Adsorption, desorption, air stripping, activated carbon, ethanol. keywords: adsorption; carbon; device; doi:10.1016; engineering; ethanol; gas; mixture; model; process; separation; stripping; temperature; water cache: ap-5592.pdf plain text: ap-5592.txt item: #1103 of 1656 id: ap-5599 author: Vashi, Yoginibahen Devendrasinh; Patel, Rakesh Manilal; Deheri, Gunamani Biswanath title: NEURINGER-ROSEINWEIG MODEL BASED LONGITUDINALLY ROUGH POROUS CIRCULAR STEPPED PLATES IN THE EXISTENCE OF COUPLE STRESS date: 2020 words: 5145 flesch: 68 summary: Squeeze film characteristics of finite journal bearings: couple stress fluid model. Furthermore, this improvement in load bearing capacity is almost 58% higher when 264 vol. keywords: bearing; h∗ =; values; −0.025 cache: ap-5599.pdf plain text: ap-5599.txt item: #1104 of 1656 id: ap-560 author: Ulrych, J. title: Analysis of Unsteady Transonic Flow Fields by Means of the Colour Streak Schlieren Method date: 2004 words: 2911 flesch: 59 summary: For the CSSM analysis M� � 0.9, � � 4 deg, �� � �3 deg, f � 1, 15, 30 Hz, and t � 2.2 mm. 4: CSSM – the final flow field image a) b) c) Fig. 5: a) M� � 0.9, � � 4 deg, �� � �3 deg, f � 1 keywords: deg; f �; flow; oscillation; shock; � � cache: ap-560.pdf plain text: ap-560.txt item: #1105 of 1656 id: ap-562 author: Catalano, F. M. title: On the Effects of an Installed Propeller Slipstream on Wing Aerodynamic Characteristics date: 2004 words: 3535 flesch: 62 summary: The relative position between propeller and wing could be changed in the pusher model, and a total of 7 positions were analysed. [5, 6] and also demonstrated that laminar flow could be increased when pusher propellers are installed in convenient positions behind a wing, resulting in less friction drag. keywords: effect; fig; flow; propeller; pusher; separation; tractor; transition; wing cache: ap-562.pdf plain text: ap-562.txt item: #1106 of 1656 id: ap-564 author: Heger, J. title: Finite Element Modelling of Mechanical Phenomena Connected to the Technological Process of Continuous Casting of Steel date: 2004 words: 3151 flesch: 45 summary: Keywords: Continuous casting, steel slab, numerical simulation, finite element method, nonlinearity, large deformations, contact, crack initiation. © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 15 Acta Polytechnica Vol. 44 No. 3/2004 Finite Element Modelling of Mechanical Phenomena Connected to the Technological Process of Continuous Casting of Steel J. Heger A finite element method algorithm is presented that enables numerical simulation of real phenomena that take place during an industrial process of continuous casting of steel. keywords: casting; m �; process; product; simulation; slab; � � cache: ap-564.pdf plain text: ap-564.txt item: #1107 of 1656 id: ap-566 author: Mareš, T. title: Controlling Laminate Plate Elastic Behavior date: 2004 words: 1865 flesch: 62 summary: It is well-known that an actual deformed state minimizes the potential energy � �� u u u u� �a , l( ) ( ) , where a ,( )u u is elastic potential energy � � � �a , Eijkl ij kl( ) ( ) ( ) ( )u u x u x u x� � �� 1 2 � � � �d and l(u) is potential energy of external loads i i t ( )u � �� �d d� � � �� . keywords: plate; plies; � � cache: ap-566.pdf plain text: ap-566.txt item: #1108 of 1656 id: ap-568 author: Bauma, V.; Valášek, M.; Šika, Z. title: Design and Properties of Octaslide Redundant Parallel Kinematics date: 2004 words: 1865 flesch: 60 summary: 24 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 44 No. 3/2004 Design and Properties of Octaslide Redundant Parallel Kinematics V. Bauma, M. Valášek, Z. Šika This paper describes the conceptual design process of OCTASLIDE redundant parallel kinematics for a machine tool. The design process follows the newly developed design methodol- ogy for parallel kinematics machines. keywords: fig; octaslide cache: ap-568.pdf plain text: ap-568.txt item: #1109 of 1656 id: ap-5680 author: Mihalev, Mihail Stoyanov; Hardalov, Chavdar Momchilov; Christov, Christo Georgiev; Rinke, Monika; Leiste, Harald; Schneider, Johannes title: ADDITIVE LASER BARCODE PRINTING ON HIGH REFLECTIVE STAINLESS STEEL date: 2020 words: 2678 flesch: 59 summary: Spectral Reflectance Profile of stainless steel substrate and MoO3 layer, obtained by the ALM. The resulting additive coatings, produced from initial MoO3 powder by irradiation with a laser beam, reveal strong adhesion, high hardness, long durability and high optical contrast, which make the process suitable for barcode printing on materials such as high reflective stainless steel, which was always a challenge for the classical laser marking technologies. keywords: bar; barcode; contrast; laser; reflectance; steel cache: ap-5680.pdf plain text: ap-5680.txt item: #1110 of 1656 id: ap-5687 author: Silva, Willian T. F. D.; Borges, Filipe D. D. M. title: Genetic algorithms to determine the optimal parameters of an ensemble local mean decomposition date: 2021 words: 6932 flesch: 58 summary: An ensemble local means decomposition method and its application to local rub-impact fault diagnosis of the rotor systems. Complementary ensemble local means decomposition method and its application to rolling element bearings fault diagnosis. keywords: decomposition; figure; frequency; function; mean; method; mode; processing; product; results; signal; time cache: ap-5687.pdf plain text: ap-5687.txt item: #1111 of 1656 id: ap-570 author: Maléř, Z.; Slavík, S.; Marczi, T.; Růžička, M. title: Common Mathematical Model of Fatigue Characteristics date: 2004 words: 2615 flesch: 66 summary: The designed model was able to describe, with sufficient accuracy and reliability, the results for five different struc- tures and elements within the range of N � 104 through 106 to 107, and within the range of R � �1 through 0.6, pre-processed in some way (graphical or mathematical). The fatigue data usually described the region of N �104 to 3 106� and stress ratio of R to� �2 05. . keywords: model; � � cache: ap-570.pdf plain text: ap-570.txt item: #1112 of 1656 id: ap-5709 author: Beneš, Michal; Štefan, Radek title: HOMOGENIZATION OF TRANSPORT PROCESSES AND HYDRATION PHENOMENA IN FRESH CONCRETE date: 2020 words: 7095 flesch: 61 summary: This means that a very large number of cell problems need to be solved in order to compute homogenized coefficients A∗ and Λ∗ in the whole macroscopic domain Ω. In [20], the authors proposed an analytical approx- imation of the solution to the periodic cell problem (17) with a step function A defined by (18). Due to the limited scope of the paper, such problem is not presented and will be analysed in our future work. keywords: cell; concrete; homogenization; hydration; mesh; mesoscale; model; problem; solution; transport; water cache: ap-5709.pdf plain text: ap-5709.txt item: #1113 of 1656 id: ap-5713 author: Wasiu, John; Baba, Daoud Mohammad title: INFLUENCE OF CHEMICAL POLYMER ADDITIVE ON THE PHYSICAL AND MECHANICAL PROPERTIES OF EXPANDED POLYSTYRENE CONCRETE date: 2020 words: 5528 flesch: 66 summary: Slump chart with and without renolith at different % replacement of coarse aggregate with EPS beam. Computed densities at different % replacement of coarse aggregate with EPS beads. keywords: aggregate; coarse; concrete; eps; rcpa; renolith; replacement; strength; test; water cache: ap-5713.pdf plain text: ap-5713.txt item: #1114 of 1656 id: ap-5715 author: Daniyan, Ilesanmi; Tlhabadira, Isaac; Mpofu, Khumbulani; Adeodu, Adefemi title: DEVELOPMENT OF NUMERICAL MODELS FOR THE PREDICTION OF TEMPERATURE AND SURFACE ROUGHNESS DURING THE MACHINING OPERATION OF TITANIUM ALLOY (Ti6Al4V) date: 2020 words: 9802 flesch: 57 summary: The feasible combinations of these process parameters produced 41 experimental trials whose response (surface roughness and temperature) were determined via the physical experimentations. For the three input data parameters employed for this study (the feed rate, spindle speed and the cut- ting velocity), the number of the neurons in the hid- den layer was obtained as ten and the corresponding number of the output layer and expected output pa- rameters was three (depth of cut, surface roughness and temperature) as shown in Figure 4. keywords: cutting; depth; figure; model; network; parameters; piece; process; rate; speed; spindle; surface; surface roughness; temperature; tool; value cache: ap-5715.pdf plain text: ap-5715.txt item: #1115 of 1656 id: ap-5718 author: Davidová, Vendula; Reiterman, Pavel title: SHRINKAGE OF VARIOUS TYPES OF PORTLAND CLINKER-BASED CEMENTS WITH RESPECT TO THEIR HYDRATION DEGREE date: 2020 words: 4801 flesch: 51 summary: The main outcomes of the performed program could be summarized as follows: • Reaction kinetics of the cements essentially deter- mines the character of the measurement by using a conventional contact method, • Prolonged curing reduces final shrinkage, • Higher kinetics of cement hydration suppress the effect of the autogenous shrinkage and led to the significant overestimation of studied cements, • Lower kinetics of cement hydration led to the dom- inance of the drying shrinkage and a significant misrepresentation of obtained results, because the drying shrinkage is controlled by the diffusion, • Cement hydration is a complex reaction resulting in a solid structure. keywords: cement; concrete; curing; degree; doi:10.1016; drying; figure; hydration; materials; properties; shrinkage; strength cache: ap-5718.pdf plain text: ap-5718.txt item: #1116 of 1656 id: ap-572 author: Leinonen, J. I. title: Superior Properties of Ultra-fine-grained Steels date: 2004 words: 2491 flesch: 66 summary: Numerous research projects to develop still better struc- tural steels, e.g. “ultra steels” or “super steels”, have been commenced all over the world since the mid-1990s, espe- cially in Asia (e.g. Japan, South Korea, China), Australia and Europe. The effect of ferrite grain size on yield strength and impact transition temperature (tough/brittle), extrapolated to ultra-fine grain sizes, is shown in Fig. keywords: grain; impact; steels; strength; tncp; toughness cache: ap-572.pdf plain text: ap-572.txt item: #1117 of 1656 id: ap-574 author: Polášek, M.; Macek, J.; Vítek, O.; Kozel, K. title: Integration of CFD Methods into Concurrent Design of Internal Combustion Engine date: 2004 words: 4258 flesch: 55 summary: Using these tools, real limits for high-b.m.e.p., downsized SI engines and optimized cycle parameters can be estimated in advance, taking into account the auto-ignition and knock limits. 3 Application of a thermodynamic model to SI engine downsizing concept simulation The current trend toward significant CO2 reduction calls for an increase in the fuel economy of engines and cars. keywords: combustion; cylinder; design; engine; fig; knock; level; model; simulation; temperature; time cache: ap-574.pdf plain text: ap-574.txt item: #1118 of 1656 id: ap-576 author: Matsuki, N.; Tokunaga, H.; Sawada, H. title: A Component-based Software Development and Execution Framework for CAx Applications date: 2004 words: 3089 flesch: 51 summary: The MZ-Platform infrastructure is a component-based software development framework, designed for supporting enterprises to enhance digitalized technologies using software tools and CAx components in a self-innovative way. The XML-Component Transmutation module can store component assembly in XML format. keywords: application; component; data; parametric; platform; software; xml cache: ap-576.pdf plain text: ap-576.txt item: #1119 of 1656 id: ap-578 author: Horák, M. title: Nanoelectronic Device Structures at Terahertz Frequency date: 2004 words: 5319 flesch: 60 summary: q p � � � � � � � � � � � 1 0 0 0 0 0 0 0 0 2 ac B �� ( ) cos( ) � � � � � � � sin( ) ( ) cos( ) sin( p x k p p x i p k q p 0 0 0 1 0 0 0 0 B B p x� � � � � � � � � � � � � � � 1 B) . (13) For a rectangular barrier we obtain f x e g x e p m E Uip x ip x( ) , ( ) , ( )max� � � ��0 0 0 2 � (3) where p0 is real for E U� max (this corresponds to the electron emission over the barrier) and p0 is imaginary, p i0 0� � for E U� max (electron tunneling through the barrier). keywords: barrier; e �; function �; max �; p �; t t; t �; � b; � c; � � cache: ap-578.pdf plain text: ap-578.txt item: #1120 of 1656 id: ap-5781 author: Sabatini, Michel; Havlík, Jan; Dlouhý, Tomáš title: Improving the efficiency of a steam power plant cycle by integrating a rotary indirect dryer date: 2021 words: 4741 flesch: 61 summary: To obtain dried fuel, more water, in dependence on the moisture content before and after drying, has to be evaporated. Keywords: Indirect drying, biomass drying, power generation efficiency. keywords: content; dryer; drying; efficiency; fuel; moisture; moisture content; plant; power; power plant; steam cache: ap-5781.pdf plain text: ap-5781.txt item: #1121 of 1656 id: ap-5791 author: Nnochiri, Emeka Segun; Ogundipe, Olumide Moses; Ola, Samuel Akinlabi title: Geotechnical and microstructural properties of cement-treated laterites stabilized with rice husk ash and bamboo leaf ash date: 2021 words: 5325 flesch: 62 summary: Materials The materials used were: rice husk ash, bamboo leaf ash, soil sample, ordinary Portland cement and water. Chemical composition of soil sample, BLA, RHA and cement. keywords: a-7; ash; bla; cbr; cement; figure; properties; rha; sample; soil; soil sample cache: ap-5791.pdf plain text: ap-5791.txt item: #1122 of 1656 id: ap-580 author: Geromiller, H.-P.; Farschtschi, A. title: Numerical Calculation of Electric Fields in Housing Spaces due to Electromagnetic Radiation from Antennas for Mobile Communication date: 2004 words: 1469 flesch: 52 summary: 2: Dependency of maximum electric field strength inside a housing space referred to the incident electric field strength (E Eincmax ) over angle of incidence (�) related to the energetic density of electromagnetic waves, and therefore the negative impacts on humans increases dispro- portionately with electric field strength. Investiga- tion of electric field strength inside the house-spacing was based on different angles of incidence within the range of 5°���85° in steps of �step � 5°. keywords: � � cache: ap-580.pdf plain text: ap-580.txt item: #1123 of 1656 id: ap-5805 author: Henriques, Henrique Oliveira; Vizeu, Carlos Eduardo; Souza, Paulo Cesar; Costa, Mauricio Caldora; Sotelo, Guilherme Gonçalves; Sousa, Jonaylton Moura; Fortes, Marcio Zamboti; Ferreira, Vitor Hugo title: COUPLED ELECTROMAGNETIC-THERMAL SIMULATION OF A POWER TRANSFORMER BY 3D FEM date: 2020 words: 4917 flesch: 56 summary: Power transformers are the most common equipment in an electric power system, which has been manufactured in the last decade. Keywords: Power transformer, thermal simulation, finite element method, hot spot, CFD. keywords: case; figure; heat; load; model; oil; power; power transformer; simulation; temperature; transformer; windings cache: ap-5805.pdf plain text: ap-5805.txt item: #1124 of 1656 id: ap-5809 author: Vokurka, Karel title: ON THE SECOND LIGHT FLASH EMITTED FROM A SPARK-GENERATED BUBBLE OSCILLATING IN WATER date: 2020 words: 7127 flesch: 68 summary: Generated bubbles can be described by two parameters. Experimental study of the thermal behavior of spark generated bubbles in water. keywords: bubble; d12; figure; light; pressure; pulse; rm1; spark; time; u1(t cache: ap-5809.pdf plain text: ap-5809.txt item: #1125 of 1656 id: ap-582 author: Green, G.; Mamtani, G. title: An Integrated Decision Making Model for Evaluation of Concept Design date: 2004 words: 2538 flesch: 63 summary: 62 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 44 No. 3/2004 An Integrated Decision Making Model for Evaluation of Concept Design G. Green, G. Mamtani The Conceptual design phase generates various design concepts and these are then evaluated in order to identify the ‘Best’ concept. One of them includes application of Fuzzy Logic as a tool to evaluate design concepts against criteria. keywords: concepts; design; evaluation; fuzzy cache: ap-582.pdf plain text: ap-582.txt item: #1126 of 1656 id: ap-5826 author: Urban, Jan; Rychtáriková, Renata; Macháček, Petr; Štys, Dalibor; Urbanová, Pavla; Císař, Petr title: OPTIMIZATION OF COMPUTATIONAL BURDEN OF THE POINT INFORMATION GAIN date: 2019 words: 5384 flesch: 71 summary: A promising way for automation of the whole pro- cess of the selection of a sub-image of proper parame- ters is a usage of an equation of information entropy, which was defined by Shannon and generalized by Rényi − ej H +W − 1 ln nj(x) + nj(y) keywords: entropy; histogram; image; information; intensity; j=0; pixel; w − cache: ap-5826.pdf plain text: ap-5826.txt item: #1127 of 1656 id: ap-5835 author: Wasiu, John; Oluwatosin, Fashina Ayoola title: EXPERIMENTAL INVESTIGATION OF THE POZZOLANIC POTENTIALS OF MILLET AND RICE HUSK ASH AS MINERAL ADDITIVE IN SELF-COMPACTING CONCRETE date: 2020 words: 5129 flesch: 66 summary: Rice husk ash as a partial replacement of cement in high strength concrete containing micro silica: Strength test using compression testing machine The load per unit area exerted on the concrete material under test and tending to shorten or reduce its size is called the compressive strength. keywords: ash; concrete; mha; mineral; nvc; properties; rha; scc; self; strength; test cache: ap-5835.pdf plain text: ap-5835.txt item: #1128 of 1656 id: ap-5838 author: Havlík, Jan; Dlouhý, Tomáš; Sabatini, Michel title: THE EFFECT OF THE FILLING RATIO ON THE OPERATING CHARACTERISTICS OF AN INDIRECT DRUM DRYER date: 2020 words: 3750 flesch: 52 summary: Based on the experimental results, the effect of various drum filling by dried material on the mentioned operating characteristics was analysed. In order to appropriately compare measurements, the evaporation capacity values are determined for dry- ing to a similar value of final water content around 40wt% in dried material to illustrate the intensity of drying process in the developed phase. keywords: capacity; dryer; drying; energy; evaporation; filling; heat; material; water cache: ap-5838.pdf plain text: ap-5838.txt item: #1129 of 1656 id: ap-584 author: Chudý, P.; Fiľakovský, K.; Friedl, J. title: Aerodynamic Analysis of Turboprop Engine Air Intake date: 2004 words: 2226 flesch: 59 summary: � Original air intake, � Air intake +10 %, � Air intake � 10%, � Air intake with prismatic insert, � Optimised air intake. � SST 53.77 255.79 309.56 4.757 Insert 63.13 240.23 303.36 3.805 �10 % 49.97 237.02 286.99 4.743 +10 % 45.40 231.08 276.48 5.090 Optimized 127.30 223.53 350.83 1.756 Table 1: Summary of results Fig. 8: Contours of static pressure (relative to the reference pres- sure), original air intake, k-e turbulence model Fig. 9: Streamlines in internal sections, original air intake, k-� turbulence model 5 Comparison with experiment The experiment was performed by Walter a.s. in a static test room for engines [8]. keywords: air; air intake; fig; geometry; intake; pressure cache: ap-584.pdf plain text: ap-584.txt item: #1130 of 1656 id: ap-5840 author: Lytvyniak, Oksana title: DEFORMATION ANALYSIS OF LAYERED REINFORCED CONCRETE - FOAM CONCRETE FLOOR SLABS date: 2020 words: 8104 flesch: 57 summary: (12) The value of deformation εct1 on the upper tensile border of normal concrete (it is in a direct contact with a layer of tensile foam concrete) is determined from the equation (11) with the use of the change of the value of deformation εfc1 (in fixed limits) on the upper fibre of compressed foam concrete. (8) The corresponding values of relative deformations εfc1 on the upper limit of the compressed foam concrete are determined in an accordance with the prescribed values of relative deformations εct2 on the lower limit of tensile normal concrete according to the formula (7). keywords: concrete; deformation; foam concrete; lrfcs; stresses; tensile; zc1; εfc1; εfc1 εfc1 cache: ap-5840.pdf plain text: ap-5840.txt item: #1131 of 1656 id: ap-5846 author: Macho, Oliver; Demková, Karin; Gabrišová, Ľudmila; Čierny, Matúš; Mužíková, Jitka; Galbavá, Paulína; Nižnanská, Žofia; Blaško, Jaroslav; Peciar, Peter; Fekete, Roman; Peciar, Marián title: ANALYSIS OF STATIC ANGLE OF REPOSE WITH RESPECT TO POWDER MATERIAL PROPERTIES date: 2020 words: 4563 flesch: 62 summary: This paper investigates the Angle of Repose (AoR) of powder materials with respect to their morphological and rheological properties. The AoR measurement is used in many applications of processing, storing and handling powder materials, determining the slope stability, furnace design and many other uses. keywords: aif; angle; aor; doi:10.1016; flow; material; particles; powder; properties; repose; value cache: ap-5846.pdf plain text: ap-5846.txt item: #1132 of 1656 id: ap-5850 author: Askarova, Aliya; Bolegenova, Saltanat; Maximov, Valeriy; Bolegenova, Symbat; Nugymanova, Aizhan; Šafařík, Pavel title: 3-D MODELING OF HEAT AND MASS TRANSFER PROCESS DURING THE COMBUSTION OF SOLID FUEL IN A SWIRL FURNACE date: 2019 words: 4241 flesch: 52 summary: Mathematical simulation of pulverized coal in combustion chamber. Computational modeling of heat and mass transfer processes in combustion chamber at power plant of kazakhstan. keywords: air mixture; boiler; combustion; combustion chamber; flow; flow method; method; supplying; swirl cache: ap-5850.pdf plain text: ap-5850.txt item: #1133 of 1656 id: ap-586 author: Jurun, E.; Veza, I. title: Developing Model for Supply Chain Management - the Case of Croatia date: 2004 words: 3681 flesch: 52 summary: i i n � � � 1 (aggregate quality constraint) (6) l x LDi i i n � � � 1 (aggregate delivery constraint) (7) x Di i n � � � 1 (demand constraint) (8) x v i ni i� �1, ,� (supplier constraints) (9) x i ni � �0 1, ,� (non-negativity constraint) (10) Let us assume that the producer requires the total quantity of goods D, therefore x Dijk k l j m i i n ��� ��� � 111 ( ) (21) must be valid. keywords: chain; enterprises; management; planning; price; supplier; supply; � � cache: ap-586.pdf plain text: ap-586.txt item: #1134 of 1656 id: ap-588 author: Farouk, A.; Lamboj, L.; Kos, J. title: A Numerical Model to Predict Matric Suction Inside Unsaturated Soils date: 2004 words: 4566 flesch: 57 summary: r R1 1� � �( tan sec )� � , (6) x R� sin � , (7) z R� �2 1( cos )� . Matric suction in such a system arises from capillary actions attributed to interactions between air-water menisci (which are generated from the surface tension phenomenon), and soil particles. keywords: fig; matric; model; particles; soil; suction; water; � � cache: ap-588.pdf plain text: ap-588.txt item: #1135 of 1656 id: ap-5897 author: Caalim, Jonathan; Demegillo, Shiela title: BETA CANTOR SERIES EXPANSION AND ADMISSIBLE SEQUENCES date: 2020 words: 7670 flesch: 92 summary: Then, for small ε > 0, c∗1 = bα(γ + 1)− γ + εc = α(γ + 1) − γ = c1. Define IB := {n ∈ N ∪ {0} | sgn(B[n+ 1]) > 0} and CB := {γ ∈ R | βn+1T n(γ + 1)− γ /∈ Z for n ∈ IB}. keywords: beta; expansion cache: ap-5897.pdf plain text: ap-5897.txt item: #1136 of 1656 id: ap-590 author: Farouk, A.; Lamboj, L.; Kos, J. title: Influence of Matric Suction on the Shear Strength Behaviour of Unsaturated Sand date: 2004 words: 3653 flesch: 58 summary: In addition, many researchers have presented their re- sults, when conducting constant water content triaxial tests (CW) on unsaturated soils, without analyzing the change of matric suction during these tests. Therefore, the decision was taken to study the shear strength behaviour of unsaturated sand using the CW triaxial test method with measurements of matric suction during the shearing stage. keywords: matric; matric suction; pressure; samples; sand; suction; water cache: ap-590.pdf plain text: ap-590.txt item: #1137 of 1656 id: ap-5918 author: Haouam, Ilyas title: ANALYTICAL SOLUTION OF (2+1) DIMENSIONAL DIRAC EQUATION IN TIME-DEPENDENT NONCOMMUTATIVE PHASE-SPACE date: 2020 words: 6016 flesch: 68 summary: Time profile of harmonic generation. The above equation is the relation of the ordinary NCG except that the NC structure constants are considered as exponentially increasing functions with the evolution of time. keywords: dirac; doi:10.1103; equation; field; phase; physical; quantum; review; space; time; |φ(λ cache: ap-5918.pdf plain text: ap-5918.txt item: #1138 of 1656 id: ap-592 author: Ficker, T. title: Multifractal Image Analysis of Electrostatic Surface Microdischarges date: 2004 words: 2670 flesch: 69 summary: Many followers appeared in the field of computer simula- tions of discharge channel structures [12–18]. An abundant rami- fication, when the branches thoroughly fill the surface, leads to a geometrical structure whose dimension D will approach that of a plane (D � 2). keywords: phys; surface; vol; � � cache: ap-592.pdf plain text: ap-592.txt item: #1139 of 1656 id: ap-594 author: Ficker, T.; Kapička, V.; Macur, J.; Slavíček, P.; Benešovský, P. title: Fractality of Electrostatic Microdischarges on the Surface of Polymers date: 2004 words: 2449 flesch: 62 summary: 4–6 in which the increasing linear dependence D aU b� � is well recognisable. 1: Lichtenberg figures generated at 8 kV and 30 min., (D � 1.486, sample no. 27) termined. keywords: electret; figures; forming; lichtenberg; � � cache: ap-594.pdf plain text: ap-594.txt item: #1140 of 1656 id: ap-5940 author: Adebayo, Abdullahi Olawale; Oyetunji, Akinlabi; Alaneme, Kenneth Kenayo title: MICROSTRUCTURAL CHARACTERISTICS, MECHANICAL AND WEAR BEHAVIOUR OF ALUMINIUM-ALLOYED DUCTILE IRONS SUBJECTED TO TWO AUSTEMPERING PROCESSES date: 2020 words: 6900 flesch: 57 summary: Austempered ductile iron (ADI): Influence of austempering temperature on microstructure, mechanical and wear properties and energy consumption. Ductile irons containing 1−4wt.% Al were produced and subjected to single and two-step austempering processes. keywords: aluminium; ausferrite; austempering; cast; ductile; ductile irons; graphite; properties; step; wear; wt.% cache: ap-5940.pdf plain text: ap-5940.txt item: #1141 of 1656 id: ap-5955 author: Pylypaka, Serhii F.; Klendii, Mykola B.; Trokhaniak, Viktor I.; Kresan, Tetiana A.; Hryshchenko, Iryna Y.; Pastushenko, Andrii S. title: EXTERNAL ROLLING OF A POLYGON ON CLOSED CURVILINEAR PROFILE date: 2021 words: 5287 flesch: 65 summary: Keywords: Surface tillage, helical surface, developable helicoid, approach angle, flight development, movement pattern. Five types of ruled helical surfaces for helical conveyers, support anchors and screws. keywords: angle; depth; disk; fig; movement; radius; soil; surface; tillage; unit cache: ap-5955.pdf plain text: ap-5955.txt item: #1142 of 1656 id: ap-596 author: Jiroušek, P. title: Programming a Logical Control Method by a Parallel Process date: 2004 words: 2652 flesch: 57 summary: There exist higher level of logical control program systems such as STEP 5 and GRAFCET. Unlike other program systems, for instance systems support- ing the GRAFCET, verification is performed in graphical form. keywords: control; language; primas; processes; program; system cache: ap-596.pdf plain text: ap-596.txt item: #1143 of 1656 id: ap-5960 author: Sunu, Putu Wijaya; Anakottapary, Daud Simon; Suarta, I Made; Santosa, I Dewa Made Cipta; Suarsana, Ketut title: HEAT TRANSFER ENHANCEMENT AND FRICTION IN DOUBLE PIPE HEAT EXCHANGER WITH VARIOUS NUMBER OF LONGITUDINAL GROOVES date: 2020 words: 5737 flesch: 57 summary: However, up to now, there have been few investigations and applications of longitudinal grooves in relation to heat transfer associated with friction from the annulus of a heat exchanger. The present investigation examined the effects of longitudinal grooves in a double pipe heat exchanger on the characteristics of heat transfer and friction. keywords: annulus; doi:10.1016; exchanger; flow; fluid; friction; grooves; heat; heat exchanger; heat transfer; number; pipe; transfer; tube cache: ap-5960.pdf plain text: ap-5960.txt item: #1144 of 1656 id: ap-5963 author: Castro Silva, Janaina Oliveira; Maia, Cristiana Brasil title: OPTIMIZATION OF A SMALL SOLAR CHIMNEY date: 2020 words: 6000 flesch: 51 summary: Exergy efficiency and solar chimney efficiency were determined, on an hourly basis, for a one-year period. Keywords: Solar chimney, optimization, conjugate directions, variable metric. keywords: airflow; analysis; chimney; collector; doi:10.1016; efficiency; energy; geometry; height; optimization; parameters; power; radiation; rate; solar; temperature cache: ap-5963.pdf plain text: ap-5963.txt item: #1145 of 1656 id: ap-598 author: Audy, M.; Šejnoha, M. title: Effect of Boundary Constraints in the Formulation of the Partition of Unity Method: One-dimensional Setting date: 2004 words: 5143 flesch: 68 summary: �u represents a portion of � with prescribed displacements u while tractions t are prescribed on � �� � � �t u t d� � �0 . The assumed arrangement of the individual elements in the chain model suggests F F F F Fk k h h� � � �1 2 1 2 , (21) keywords: b �; d �; h �; k k; k �; � t; � u; � � cache: ap-598.pdf plain text: ap-598.txt item: #1146 of 1656 id: ap-5981 author: Schmidt, Jaroslav; Janda, Tomáš; Zemanová, Alena; Zeman, Jan; Šejnoha, Michal title: NEWMARK ALGORITHM FOR DYNAMIC ANALYSIS WITH MAXWELL CHAIN MODEL date: 2020 words: 5928 flesch: 63 summary: Top, center, and bottom graphs show trajectories for time steps ∆t = 1.0 s, ∆t = 0.5 s, and ∆t Left: the evolution of internal energy Eint and dissipation Dd, normalized by the work done by external forces Wd for time step ∆t = 0.5 s. Right: the evolution of numerical dissipation ∆d, normalized by the work done by external forces Wd. discretize the sample into identical 1,000 hexahedron elements and consider the time step of 0.01 s. The snapshots of the vibrations reveal a similar behaviour to the SDOF example, recall Figure 3, namely the attenuation of the propagating waves by viscous damping. keywords: algorithm; equations; glass; maxwell; model; newmark; p=1; section; step; time; variational cache: ap-5981.pdf plain text: ap-5981.txt item: #1147 of 1656 id: ap-5987 author: Durdán, Milan; Terpák, Ján; Kačur, Ján; Laciak, Marek; Flegner, Patrik title: MODELING OF MATERIAL BALANCE FROM THE EXPERIMENTAL UCG date: 2020 words: 5651 flesch: 59 summary: Keywords: Underground coal gasification, material balance, atoms, ex-situ reactors, losses. 5/2020 Modeling of material balance from the experimental UCG account phases of individual substances (i.e., solid, liquid, and gaseous phases). keywords: balance; chemical; coal; coal gasification; experiment; gasification; mass; material; material balance; model; process; syngas; ucg cache: ap-5987.pdf plain text: ap-5987.txt item: #1148 of 1656 id: ap-5994 author: Abdullah, Hikmat N.; Dawood, Zinah O.; Abdelkareem, Ammar E.; Abed, Hadeel S. title: COMPLEXITY REDUCTION OF CYCLOSTATIONARY SENSING TECHNIQUE USING IMPROVED HYBRID SENSING METHOD date: 2020 words: 5252 flesch: 52 summary: Non-cooperative scenario Figure 2 shows the performance curves of a number of samples versus the computational complexity ra- tio in cyclostationary of hybrid proposed methods compared with the traditional method. The price we pay for the complexity reduction is a slight loss in Pd as compared with the traditional method, also, it can be seen that although the proposed method using the SDFT hasa greater reduction in the computational complexity than the other proposed methods that use the FFT, it also gives a good detection performance, especially at low values of Eb/N0, since the SDFT has a higher accuracy than the FFT and the performance of other methods becomes the same as the method that uses the SDFT at Eb/N0 equals 6 dB. As shown in the figure, when Eb/N0 equals 0 dB, Pd is decreased by 20% and 10% using proposed methods that use the FFT and SDFT respectively, as compared with the hybrid method in [4] and increased by 30% and 40% respectively, as compared with the energy de- tector. keywords: complexity; detection; detector; hybrid; method; performance; sensing; signal; spectrum cache: ap-5994.pdf plain text: ap-5994.txt item: #1149 of 1656 id: ap-5998 author: Sahul, Miroslav; Sahul, Martin; Pašák, Matej; Marônek, Milan title: ANALYSIS OF THE PROPERTIES OF AW2099 ALUMINIUM-LITHIUM ALLOY WELDED BY LASER BEAM WITH AW5087 ALUMINIUM-MAGNESIUM FILLER MATERIAL date: 2019 words: 3504 flesch: 63 summary: EN AW2099 belongs to the 3rd generation of aluminium lithium alloys. Keywords: Aluminium lithium alloy, laser beam welding, equiaxed zone, microstructure, electron microscopy, mechanical properties. keywords: alloy; aluminium; doi:10.1016; filler; laser; lithium; material; weld; welding; zone cache: ap-5998.pdf plain text: ap-5998.txt item: #1150 of 1656 id: ap-600 author: Kratěna, J.; Fořt, I. title: Study of the Discharge Stream from a Standard Rushton turbine impeller date: 2004 words: 3692 flesch: 58 summary: � � ��2 1 2 � d (17) (8) 3 Results of experiments Experiments were carried out in a flat-bottomed cylindri- cal pilot plant mixing vessel with four baffles at its wall (see Fig. 3) of diameter T � 0.3 filled with either water (� � 1 mPa�s) or with one of two water glycerol solutions of dy- namic viscosity � � 3 mPa�s and � � 6 mPa�s, respectively. keywords: discharge; flow; impeller; radial; stream; turbine; � � cache: ap-600.pdf plain text: ap-600.txt item: #1151 of 1656 id: ap-6003 author: Loskot, Jan; Zubko, Maciej; Janikowski, Zbigniew title: ANALYSES OF WASTE PRODUCTS OBTAINED BY LASER CUTTING OF AW-3103 ALUMINIUM ALLOY date: 2020 words: 4309 flesch: 61 summary: In this research, we analysed waste particles gener- ated during laser cutting of a widely used AW-3103 aluminium alloy. Statistical characteristics of waste powder particles. keywords: alloy; aluminium; cutting; figure; laser; laser cutting; material; particles; powder; surface; tube; waste cache: ap-6003.pdf plain text: ap-6003.txt item: #1152 of 1656 id: ap-602 author: Brož, J.; Fořt, I.; Sperling, R.; Jambere, S.; Heiser, M.; Rieger, F. title: Pumping Capacity of Pitched Blade Impellers in a Tall Vessel with a Draught Tube date: 2004 words: 3988 flesch: 63 summary: The PBT pumping capacity will be calculated from the radial profile of the axial compo- 48 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 44 No. 4/2004 Pumping Capacity of Pitched Blade Impellers in a Tall Vessel with a Draught Tube J. Brož, I. Fořt, R. Sperling, S. Jambere, M. Heiser, F. Rieger A study was made of the pumping capacity of pitched blade impellers (two, three, four, five and six blade pitched blade impellers with pitch angles � � 35° and 45°) coaxially located in a cylindrical pilot plant vessel with cylindrical draught tube provided with a standard dished bottom. For all the tested pitched blade impellers the impeller power number when � � 45° exceeds the value of this quantity when pitch angle � � 35°, while the flow rate number when � � 35° exceeds this quantity when � � 45°. keywords: draught; draught tube; impeller; number; tube; � � cache: ap-602.pdf plain text: ap-602.txt item: #1153 of 1656 id: ap-604 author: Abdelaziz, T. H. S.; Valášek, M. title: Eigenstructure Assignment by State-derivative and Partial Output-derivative Feedback for Linear Time-invariant Control Systems date: 2004 words: 6523 flesch: 66 summary: Finally, the parametric equation to the right generalized eigenvector can be expressed as � � � �� �i n i ij k n ij k ij k ij k ij kI A B I B� �� � � � � � � � � �, , , ,� � � �1 v w ij i iji s j q k p 0 1 1 1 � � � � 0, , , , , , , , , . The right generalized eigenvector can be expressed as � � � �� �i n i ij k n ij k ij k ij k ij kI A B I B� � � � � � � � � � � �, , , ,� � � �1 v z ij i iji s j q k p 0 1 1 1 � � � � 0, , , , , , , , , . keywords: b �; ij �; j �; k �; t �; � c; � rank; � v; � � cache: ap-604.pdf plain text: ap-604.txt item: #1154 of 1656 id: ap-6049 author: Kunz, Jan; Beneš, Petr title: VERSATILE CHIRP SINE GENERATOR ON FIXED-POINT FPGA date: 2020 words: 4549 flesch: 58 summary: Linear chirp sine signal is used, for example, in radars. Implementation of DDS chirp signal generator on FPGA. keywords: chirp; frequency; generation; phase; point; signal; sine; speed cache: ap-6049.pdf plain text: ap-6049.txt item: #1155 of 1656 id: ap-6050 author: Krejčí, Jakub; Beneš, Petr title: A COMPARISON OF TWO MODAL ANALYSIS METHODS: AN IMPACT HAMMER VERSUS LASER VIBROMETRY date: 2020 words: 3720 flesch: 57 summary: Firstly, narrow band analogue filters were applied for the evaluation of modal analysis, but then, FFT analysers became more used owing to the evolution of measurement systems. Nowadays, computers have a high computing performance and a model including modal analysis or other parameters can be performed in a short time and it can be compared with a real measurement [4]. keywords: analysis; beam; comparison; excitation; measurement; modal; results; static cache: ap-6050.pdf plain text: ap-6050.txt item: #1156 of 1656 id: ap-6051 author: Kratochvílová, Darina; Cajthaml, Jiří title: USING THE AUTOMATIC VECTORISATION METHOD IN GENERATING THE VECTOR ALTIMETRY OF THE HISTORICAL VLTAVA RIVER VALLEY date: 2020 words: 5090 flesch: 54 summary: Examples of errors in base map data. When merging map sheets, only contour lines with same elevation were intercon- nected. keywords: arcscan; contour; data; file; lines; map; maps; raster; sheets; vectorisation cache: ap-6051.pdf plain text: ap-6051.txt item: #1157 of 1656 id: ap-6053 author: Kůdelová, Tereza; Kroulíková, Tereza; Astrouski, Ilya; Raudenský, Miroslav title: THE INFLUENCE OF THE FIBRES ARRANGEMENT ON HEAT TRANSFER AND PRESSURE DROP OF POLYMERIC HOLLOW FIBRE HEAT EXCHANGERS date: 2020 words: 2829 flesch: 70 summary: Keywords: Polymeric hollow fibre, heat exchanger, heat transfer. Polymeric hollow fibre heat exchangers are the new alternative to common metal heat exchangers. keywords: exchangers; fibres; heat; pressure; temperature; transfer cache: ap-6053.pdf plain text: ap-6053.txt item: #1158 of 1656 id: ap-606 author: Matz, V.; Kreidl, M.; Šmíd, R. title: Signal-to-Noise Ratio Improvement based on the Discrete Wavelet Transform in Ultrasonic Defectoscopy date: 2004 words: 2372 flesch: 60 summary: (2) DWT coefficients are usually sampled from the CWT on a dyadic grid, choosing parameters of translation � � �n m2 and scale s m�2 , it is possible to defined mother wavelet in DWT as: � �m n m m mt t n , ( ) � �� � � � � � 1 2 2 2 . An important requirement on ultrasonic signal filtering is zero-time shift, because the position of ultrasonic echoes is essential. keywords: echo; fault; fig; noise; signal; wavelet; � � cache: ap-606.pdf plain text: ap-606.txt item: #1159 of 1656 id: ap-6061 author: Vokál, Marek; Drahorád, Michal title: SENSITIVITY ANALYSIS OF INPUT PARAMETERS FOR LOAD CARRYING CAPACITY OF MASONRY ARCH BRIDGES date: 2020 words: 5463 flesch: 67 summary: 85% of Czech masonry vault railway bridges are in a “good” structural state, 14% are in a “bad” structural state and 1% are in a serious, unsatisfactory structural state. A similar portion of masonry bridges can be found throughout the whole Europe. keywords: bridges; coefficient; figure; lcc; load; masonry; parameters; strength; vault cache: ap-6061.pdf plain text: ap-6061.txt item: #1160 of 1656 id: ap-6065 author: Dolejší, Vít; Kuráž, Michal; Solin, Pavel title: NUMERICAL SIMULATION OF A SINGLE RING INFILTRATION EXPERIMENT WITH hp-ADAPTIVE SPACE-TIME DISCONTINUOUS GALERKIN METHOD date: 2021 words: 5130 flesch: 66 summary: The stopping criteria and the choice of the time step are controlled in such a way that the errors arising due to the space discretization, time discretization, and iterative solution of nonlinear algebraic systems are balanced. < tr = T we split the time interval I into sub-intervals intervals Im = (tm−1, tm], m = 1, . . . keywords: boundary; experiment; method; numerical; space; time cache: ap-6065.pdf plain text: ap-6065.txt item: #1161 of 1656 id: ap-6069 author: Fučík, Radek; Solovský, Jakub; Plampin, Michelle R.; Wu, Hao; Mikyška, Jiří; Illangasekare, Tissa H. title: COMPUTATIONAL METHODOLOGY TO ANALYZE THE EFFECT OF MASS TRANSFER RATE ON ATTENUATION OF LEAKED CARBON DIOXIDE IN SHALLOW AQUIFERS date: 2021 words: 5869 flesch: 58 summary: The average temperatures in the static case and background flow experiments were 37◦C and 26◦C, respectively. The purpose of this present study is to develop a numerical modeling methodology to assess the factors that control inter-phase CO2 mass transfer during migration through heterogeneous 2D porous media systems in the shallow subsurface where CO2 can only exist in the gaseous and dissolved phases. keywords: background; co2; flow; gas; mass; phase; water cache: ap-6069.pdf plain text: ap-6069.txt item: #1162 of 1656 id: ap-6074 author: Linkeová, Ivana; Zelený, Vít title: APPLICATION OF RULED SURFACES IN FREEFORM AND GEAR METROLOGY date: 2021 words: 5697 flesch: 62 summary: Smart gear measurement standard In gear metrology, precise gear measurement standards of various designs and purposes are developed, man- ufactured and calibrated. Spur (magenta) and helical (cyan) gear included in Smart gear measurement standard. keywords: freeform; gear; helix; involute; paraboloid; standard; surface cache: ap-6074.pdf plain text: ap-6074.txt item: #1163 of 1656 id: ap-6075 author: Oberhuber, Tomáš; Klinkovský, Jakub; Fučík, Radek title: TNL: NUMERICAL LIBRARY FOR MODERN PARALLEL ARCHITECTURES date: 2021 words: 8064 flesch: 73 summary: Nonlin- ear system solvers, eigenvalues computations or ODE system solvers are slightly less common compared to linear systems solvers, nevertheless these algorithms belong to the core of HPC as well. As we mentioned before, efficient precondition- ers for linear systems solvers are extremely important. keywords: cores; cpu; eff; gpu; memory; numerical; parallel; solver; speed; time; tnl cache: ap-6075.pdf plain text: ap-6075.txt item: #1164 of 1656 id: ap-608 author: Bažant, Z. P.; Yu, Q. title: Size Effect in Fracture of Concrete Specimens and Structures: New Problems and Progress date: 2004 words: 7153 flesch: 66 summary: They proposed the semi-empirical formula: � �n a a � � � � � � � � � 0 1 2 1 * , (6) where �0 � �ft for small 3PB specimens; a� * is a certain con- stant; and �n represents the maximum tensile stress in the ligament based on a linear stress distribution over the liga- ment, � � �n N A� ( )0 . (13) and solving for �N, one gets an equation of the form of Bažant’s classical size effect law (1984): � �N D D� � � 0 0 1 21( ) . keywords: bažant; concrete; crack; effect; fig; fracture; size; vol; � � cache: ap-608.pdf plain text: ap-608.txt item: #1165 of 1656 id: ap-6080 author: Sváček, Petr title: NUMERICAL SOLUTION OF FLUID-STRUCTURE INTERACTION PROBLEMS WITH CONSIDERING OF CONTACTS date: 2021 words: 5800 flesch: 63 summary: Dt |tn+1 ≈ (15) 1 JAn+1 3JAn+1u n+1 − 4JAn un + JAn−1u n−1 2∆t or more precisely the time derivative term from (11) is approximated by d dt (∫ Ωt ρu · zdx ) |tn+1 ≈M(U, V )− LM (V ) (16) for U = (u, p) := (un+1, pn+1), V = (z, q) and with M(U, V ) = 3 2∆t ( un+1, z ) Thus, the time discretized weak formulation reads: Find U = (u, p) : keywords: boundary; domain; flow; matrix; problem; solution; time; velocity cache: ap-6080.pdf plain text: ap-6080.txt item: #1166 of 1656 id: ap-6081 author: Vítek, Oldřich; Macek, Jan; Doleček, Vít; Syrovátka, Zbyněk; Pavlovic, Zoran; Priesching, Peter; Tap, Ferry title: APPLICATION OF ADVANCED COMBUSTION MODELS IN INTERNAL COMBUSTION ENGINES BASED ON 3-D CFD LES APPROACH date: 2021 words: 11124 flesch: 58 summary: Comparison of 1st cycle simulation data related to medium-lean conditions (the Case A2 in Table 3) while comparing different combustion models (no label corresponds to ECFM, label ‘TABKIN’ represents FGM combustion model while considering different chemical mechanisms) – top left subfigure corresponds to in-cylinder pressure, top right represents pre-chamber pressure, bottom left shows in-cylinder ROHR, bottom right subfigure presents in-cylinder HR. issues) is in progress. Concerning combustion models, different ap- proaches were applied depending on ICE type. keywords: case; cfd; chamber; chemistry; combustion; cylinder; data; engine; figure; flame; ice; les; model; pre; pressure; results; rohr; table; time; turbulence cache: ap-6081.pdf plain text: ap-6081.txt item: #1167 of 1656 id: ap-6083 author: Pátý, Marek; Halama, Jan title: ON THE USE OF A FLUX-SPLITTING SCHEME IN THE NUMERICAL FLUTTER ANALYSIS OF A LOW-PRESSURE TURBINE STAGE date: 2021 words: 8690 flesch: 57 summary: Introduction The interaction of flow and structure leading to vi- brations has long been recognised as one of the most essential problems faced by turbine blade designers. The mode of blade oscillation is a harmonic translation in a direction of 63° from the 139 Marek Pátý, Jan Halama Acta Polytechnica Figure 3. keywords: accuracy; aerodynamic; blade; cell; damping; domain; face; flow; flutter; gradient; limiter; method; numerical; order; pressure; reconstruction; results; turbine cache: ap-6083.pdf plain text: ap-6083.txt item: #1168 of 1656 id: ap-6098 author: Suder, Jiří; Vocetka, Michal; Kot, Tomáš; Fojtík, František; Fusek, Martin title: TESTING OF GLUED JOINTS ON PLASTIC PARTS MANUFACTURED USING FFF TECHNOLOGY date: 2020 words: 2935 flesch: 60 summary: Tensile failure strength and separation angle of FDM 3D printing PLA material: Experimental and theoretical analyses. One of the possibilities of experimental determination of the strength of plastic samples produced on a 3D printer is through a tensile test. keywords: adhesive; force; joints; material; orientation; samples; strength cache: ap-6098.pdf plain text: ap-6098.txt item: #1169 of 1656 id: ap-6099 author: Vocetka, Michal; Suder, Jiří; Huczala, Daniel title: THE USE OF THE TWO-HANDED COLLABORATIVE ROBOT IN NON-COLLABORATIVE APPLICATION date: 2020 words: 3485 flesch: 46 summary: Keywords: Collaborative robot, YuMi, industrial robot, industrial automation, semi-collaborativ. A pair of IRB120. 155 M. Vocetka, J. Suder, D. Huczala Acta Polytechnica YuMi would probably not be able to withstand the comparison with industrial robots. keywords: applications; case; collaborative; human; load; production; robot; solution; yumi cache: ap-6099.pdf plain text: ap-6099.txt item: #1170 of 1656 id: ap-610 author: Jirásek, M. title: Nonlocal Theories in Continuum Mechanics date: 2004 words: 16498 flesch: 53 summary: The dispersion equation corresponding to (24), � � � � � ��� �� �2 2 2 2 2 2 0Ek l Ek k( ) (25) yields the phase velocity c k c k l k l p � � � � � � 0 2 2 2 2 1 1 , (26) where c E0 � �, as usual. Classical plasticity with linear isotropic hardening is de- scribed by the basic equations � � �� �G p( ) (55) � � sgn( )� � �p � (56) � , ( , ) , � ( , )� � � � � �� � �0 0 0f f (57) where �p is the plastic strain and � is the cumulative plastic strain. keywords: equation �; function �; l �; model; r �; size; strain �; stress �; wave; � /a; � c; � d; � e; � f; � g; � k; � p; � u; � � cache: ap-610.pdf plain text: ap-610.txt item: #1171 of 1656 id: ap-6101 author: Kravcov, Alexander; Franek, Ondřej; Morozov, Nikolaj; Kucewicz, Michał; Tomaszewski, Michał; Svoboda, Pavel; Baranowski, Paweł title: LASER ULTRASONIC MEASUREMENT OF MECHANICAL DECAY IN LIMESTONE CAUSED BY FREEZE-THAW CYCLES date: 2020 words: 2268 flesch: 56 summary: This paper describes a study of local physical and mechanical characteristics after freeze-thaw cycles of limestone samples by laser ultrasonic spectroscopy, which is able to define local elastic modules of materi- als. 410 https://doi.org/10.14311/AP.2020.60.0410 https://ojs.cvut.cz/ojs/index.php/ap vol. Poisson’s ratio map of limestone sample. keywords: cycles; laser; limestone; porosity; pulse; samples cache: ap-6101.pdf plain text: ap-6101.txt item: #1172 of 1656 id: ap-6103 author: Maharaj, Adhir; Andriopoulos, Kostis; Leach, Peter title: PROPERTIES OF A DIFFERENTIAL SEQUENCE BASED UPON THE KUMMER-SCHWARZ EQUATION date: 2020 words: 4332 flesch: 65 summary: As our pri- mary interest is in differential equations integrable in the sense of Poincaré (iewith solutions which are analytically away from isolated polelike singularities) we are disappointed with the results. However, it has been shown [6, 7] that the operator, D + y, generates a sequence of differential equations based upon the Riccati equation, which has very satisfying properties in terms of their singularity characteristics and algebras. keywords: equation; sequence cache: ap-6103.pdf plain text: ap-6103.txt item: #1173 of 1656 id: ap-6104 author: Louda, Petr; Příhoda, Jaromír; Šafařík, Pavel title: INVESTIGATION OF COMPRESSIBLE FLOW THROUGH A TURBINE BLADE CASCADE FOR VARIOUS TRANSONIC FLOW REGIMES date: 2021 words: 3830 flesch: 59 summary: Prediction of boundary layer transition in transonic blade cascade with sudden change of surface curvature. Advanced mathematical models with two different models of the bypass transition to turbulence were applied for the simulation of different regimes of transonic flows as well as with attached and separated flows. keywords: blade; blade cascade; cascade; design; flow; model; operation; transition; turbine cache: ap-6104.pdf plain text: ap-6104.txt item: #1174 of 1656 id: ap-6106 author: Fridrich, David; Liska, Richard; Tarant, Ivan; Váchal, Pavel; Wendroff, Burton title: CELL-CENTERED LAGRANGIAN LAX-WENDROFF HLL HYBRID SCHEME ON UNSTRUCTURED MESHES date: 2021 words: 4811 flesch: 66 summary: Convergence of scatter plots of density for Noh problem on regular triangular mesh with τ = 2. Figure 10. Density and mesh for Sedov problem on regular triangular mesh of 10108 cells with τ = 2. plementation, all of the initial energy is stored is one regular hexahedral cell centered at (0, 0) in the case of the honeycomb and general polygonal meshes. keywords: cell; density; figure; mesh; meshes; noh; problem; triangular cache: ap-6106.pdf plain text: ap-6106.txt item: #1175 of 1656 id: ap-6119 author: Kroulíková, Tereza; Astrouski, Ilya; Raudenský, Miroslav title: CHAOTISED POLYMERIC HOLLOW FIBRE BUNDLE AS A CROSSFLOW HEAT EXCHANGER IN AIR-WATER APPLICATION date: 2020 words: 3749 flesch: 68 summary: Intensification of heat transfer of polymeric hollow fiber heat exchangers by chaotisation. That study also mentions the significant influence of the diameter of the polymeric hollow fibre on heat transfer coefficients on both inner and outer surfaces of the fibre. keywords: air; coefficient; fibre; flow; heat; heat transfer; modules; transfer; water cache: ap-6119.pdf plain text: ap-6119.txt item: #1176 of 1656 id: ap-612 author: Askes, H.; Simone, A.; Sluys, L. J. title: Modelling of Size Effect with Regularised Continua date: 2004 words: 3906 flesch: 56 summary: The stress-strain relation is written as � �� �( )1 � C (1) where � and � contain the components of stresses and strains, C contains the elastic moduli and � is a scalar damage vari- able. The local equivalent strain �eq defined in Equation (2) is translated into its nonlocal counterpart �eq via a Helmholtz-type relation as � � �eq eq eq� � � 1 2 2 2l , (3) where l is a material length parameter that represents the underlying microstructure. keywords: beams; damage; effect; notch; size; vol; � � cache: ap-612.pdf plain text: ap-612.txt item: #1177 of 1656 id: ap-6120 author: Shukla, Rajesh Prasad title: PILE SETTLEMENT INDUCED FROM SOIL MOVEMENT DUE TO BREAKDOWN OF RETAINING WALL date: 2020 words: 6225 flesch: 64 summary: Pile group settlement reduces with the increase in spacing and the number of piles in longer piles. It leads to an increase in the magnitude of piles settlement. keywords: effect; embedment; group; height; increase; movement; piles; retaining; settlement; soil; spacing; wall cache: ap-6120.pdf plain text: ap-6120.txt item: #1178 of 1656 id: ap-6125 author: Segeth, Karel title: MULTIVARIATE INTERPOLATION USING POLYHARMONIC SPLINES date: 2021 words: 5019 flesch: 67 summary: The conclusion of the present paper is more advanced, it shows that for interpola- tion it is possible to use polyharmonic functions of different orders m that minimize different norms of the interpolant u, i.e. the L2 norm of the (m + l)th derivative of u for any l positive. They are often used as basis functions for interpolation as well as approximation. keywords: basis; function; interpolant; interpolation; polyharmonic; r(x cache: ap-6125.pdf plain text: ap-6125.txt item: #1179 of 1656 id: ap-6132 author: Rustam; Gunawan, Agus Yodi; Kresnowati, Made Tri Ari Penia title: ARTIFICIAL NEURAL NETWORK APPROACH FOR THE IDENTIFICATION OF CLOVE BUDS ORIGIN BASED ON METABOLITES COMPOSITION date: 2020 words: 4939 flesch: 60 summary: Therefore, this study implements artificial neural networks as pat- tern recognition in clove buds data sets. Materials This study uses clove buds data sets obtained from Kresnowati et al. keywords: backpropagation; buds; clove; data; layer; network; neural; neurons; sets; testing; training cache: ap-6132.pdf plain text: ap-6132.txt item: #1180 of 1656 id: ap-614 author: Proft, K. De; Wilde, W. P. De title: A Discontinuous Model to Study Fracture of Brittle Materials date: 2004 words: 5003 flesch: 65 summary: B N tT T S S e �d d e� � � �� � (11a) H� � � � � i i T T i iTB N�d d� �� � �0 (i � 1, … m). d dW T Tcr n n pl t t pl� �� � (20a) and W Wcr cr t � �d 0 (20b) where !� � � �n pl t pl, are the normal and tangential com- ponent of the plastic separation vector. keywords: crack; discontinuity; element; h �; � d; � e; � t; � � cache: ap-614.pdf plain text: ap-614.txt item: #1181 of 1656 id: ap-6142 author: Kračmar, Stanislav; Neustupa, Jiří title: MODELING OF FLOWS THROUGH A CHANNEL BY THE NAVIER–STOKES VARIATIONAL INEQUALITIES date: 2021 words: 7920 flesch: 71 summary: Substituting this to the first term in (16), we obtain∫ T 0 〈 ∂tw,w − v 〉 dt = ∫ t∗ 0 〈 ∂t(v∗ext + αu), (α− 1)u 〉 dt + ∫ t∗+δ t∗ 〈 ∂t(v∗ext + ηu), (η − 1)u 〉 dt = (α− 1) ∫ t∗ 0 〈 ∂tv ∗ ext, u 〉 dt + α(α− 1) ∫ t∗ 0 〈 ∂tu, u 〉 dt + ∫ t∗+δ t∗ 〈 ∂tv ∗ ext, (η − 1)u 〉 dt + ∫ t∗+δ t∗ 〈 ∂t(ηu), ηu 〉 dt− ∫ t∗+δ t∗ 〈 η̇u, u 〉 dt − ∫ t∗+δ t∗ 〈 η ∂tu, u 〉 dt = ∫ t∗+δ 0 (η − 1) 〈 ∂tv ∗ ext, u 〉 dt + α(α− 1) 2 ( ‖u(t∗)‖22 − ‖u(0)‖22 ) + 1 2 ( ‖η(t∗ + δ)u(t∗ + Considering δ → 0+, we get∫ T 0 〈 ∂tw,w − v 〉 dt = (α− 1) ∫ t∗ 0 〈∂tv∗ext, u〉 dt + α2 − 1 2 ‖u(t∗)‖22 − α(α− 1) 2 ‖u(0‖22. keywords: v∗ext; ∫ t∗ cache: ap-6142.pdf plain text: ap-6142.txt item: #1182 of 1656 id: ap-6149 author: Neustupa, Tomáš; Winter, Ondřej title: ON THE SENSITIVITY OF THE NONLINEAR TERM IN THE OUTFLOW BOUNDARY CONDITION date: 2021 words: 3463 flesch: 60 summary: Figure 4 shows details of the contours of u for Re = 10 for ξ = −0.6, 0, 0.6. One can see that ξ = 0 and ξ = −0.6 gives almost the same results, but there is a significant difference (shift) between the contours obtained with ξ = 0 and ξ = 0.6. keywords: boundary; condition; flow cache: ap-6149.pdf plain text: ap-6149.txt item: #1183 of 1656 id: ap-6151 author: Bastl, Bohumír; Brandner, Marek; Egermaier, Jiří; Horníková, Hana; Michálková, Kristýna; Turnerová, Eva title: NUMERICAL SIMULATION OF LID-DRIVEN CAVITY FLOW BY ISOGEOMETRIC ANALYSIS date: 2021 words: 10256 flesch: 57 summary: In this paper, we present numerical results obtained by an in-house incompressible fluid flow solver based on isogeometric analysis (IgA) for the standard benchmark problem for incompressible fluid flow simulation – lid-driven cavity flow. Keywords: Isogeometric analysis, fluid flow simulation, B-splines, Navier-Stokes equations. keywords: analysis; basis; cavity; continuity; discretization; doi:10.1016; domain; element; flow; functions; isogeometric; methods; problem; results; spline; velocity cache: ap-6151.pdf plain text: ap-6151.txt item: #1184 of 1656 id: ap-616 author: Krysl, P. title: Explicit Time Integrators for Nonlinear Dynamics Derived from the Midpoint Rule date: 2004 words: 2164 flesch: 59 summary: The initial value problem may be written in the convected description (body frame) as � �� , ( )� � � � �� � � ��skew The equation of motion is written in the spatial frame as �� � RT, where �� is the rate of the spatial angular momen- tum, and consequently the equation of motion may be written in integral form as � �� � �( ) exp [ ] ( ) ( ) ( ) ( )t t tT t t � � � � � � � � � ��skew d0 0 R R T� � � � where � �exp [ ] ( ) ( )� �skew � R RT t t0 is the incremental rota- tion through vector �. keywords: t t; � d; � skew; � t; � � cache: ap-616.pdf plain text: ap-616.txt item: #1185 of 1656 id: ap-618 author: Patzák, B.; Bittnar, Z. title: OOFEM – An Object Oriented Framework for Finite Element Analysis date: 2004 words: 3757 flesch: 45 summary: A typical example is stiffness matrix computation, which can be done already at the abstract level, provided that methods for computing the geometrical matrix and material stiffness are declared in an interface specifica- tion – they are only declared as abstract (virtual), and imple- mentation is left to derived classes representing particular fi- nite elements. Derived classes typically represent a finite element node or an element side, possess- ing some DOFs. keywords: analysis; class; classes; element; finite; material; object; problem; vol cache: ap-618.pdf plain text: ap-618.txt item: #1186 of 1656 id: ap-6191 author: Trunda, Vlastislav; Hilar, Matouš title: NATM TUNNELS – CONSIDERATION OF THE PARTLY DAMAGED PRIMARY LINING IMPACT FOR THE SECONDARY LINING EVALUATION date: 2020 words: 2603 flesch: 50 summary: Keywords: NATM, primary lining, numerical calculations, durability, lifetime. Concrete degradation NATM assumes a direct contact of primary lining generated from sprayed concrete with the surrounding ground. keywords: concrete; degradation; ground; lining; parameters; primary; tunnel cache: ap-6191.pdf plain text: ap-6191.txt item: #1187 of 1656 id: ap-620 author: Rypl, D.; Bittnar, Z. title: Triangulation of 3D Surfaces Recovered from STL Grids date: 2004 words: 4664 flesch: 52 summary: An important class of 3D surfaces is the group of surfaces described by the stereolithography (STL) file format. This format approximates 3D surfaces of a solid model with ori- ented triangles (facets) of different size and shape (aspect ratio) in order to achieve a smooth enough representation suitable for industrial processing of 3D parts using stereo- lithography machines. keywords: bg edge; bg nodes; limit; stl; surface; surface bg cache: ap-620.pdf plain text: ap-620.txt item: #1188 of 1656 id: ap-622 author: Krejčí, T. title: Solution of Nonlinear Coupled Heat and Moisture Transport Using Finite Element Method date: 2004 words: 4548 flesch: 59 summary: (36) is based on expressions for unknown values collected in vector r at time n � 1 r r vn n nt� �� �1 � � (37) where the vector vn�� has the form v v vn n n� �� � �� � �( )1 1. (38) Eq. (36) is expressed in time n � 1 and with the help of the previously defined vectors we can find ( ) ( ( ) )C K K� � � � �� �� �� �t tn n n nv F r v1 1 1 . (39) keywords: c �; g g; m �; p �; w �; � d; � g; � gw; � k; � t; � u; � � cache: ap-622.pdf plain text: ap-622.txt item: #1189 of 1656 id: ap-6223 author: Havlík, Jan; Dlouhý, Tomáš; Krempaský, Jakub title: THE CONDENSATION OF WATER VAPOUR IN A MIXTURE CONTAINING A HIGH CONCENTRATION OF NON-CONDENSABLE GAS IN A VERTICAL TUBE date: 2020 words: 5714 flesch: 56 summary: Numerical simulation of air–steam mixture condensation flows in a vertical tube. Effect of an interfacial shear stress on steam condensation in the presence of a noncondensable gas in a vertical tube. keywords: condensation; condensation htc; heat; htc; mixture; steam; steam condensation; temperature; transfer; tube; water cache: ap-6223.pdf plain text: ap-6223.txt item: #1190 of 1656 id: ap-624 author: Fajman, P. title: Membrane Triangles with Drilling Degrees of Freedom date: 2004 words: 2808 flesch: 72 summary: Components of the engineering strain � � { , , }� � �x y xy T are obtained applying standard transformation as � � � � �ij ij ij ij ij� �{cos , sin , sin cos }2 2 �, and in matrix notation � � � � * *� � � ��A A 1 . 2: Extension from pure rotation �1 � 1 � � 1 1 21 21 1 13 13 1 21 2 1 2 21 u r s l L L ij ij ij i ( , ) � � � � � � �n t n t n t j ijl L L� �1 13 3 1 2 13n t , (3) where i � 2, 3, 1 and j � 1, 2, 3, and { } { , } {cos , sin }n ij xij yij nij nijn n� � � � is the outward unit normal vector of the element side ij, { } { , } {cos , sin }t ij xij yij nij nijt t� � � � is the unit vector of the element side ij (Fig. 4). keywords: element; fig; � � cache: ap-624.pdf plain text: ap-624.txt item: #1191 of 1656 id: ap-626 author: Tesárek, P.; Drchalová, J.; Kolísko, J.; Rovnaníková, P.; Černý, R. title: Mechanical, Hygric and Thermal Properties of Flue Gas Desulfurization Gypsum date: 2004 words: 4430 flesch: 58 summary: [m], S the specimen surface being in contact with the water vapor [m2], � the period of time corre- sponding to the transport of mass of water vapor �m [s], �pp the difference between the partial water vapor pressure in the air below and above the specimen [Pa], R the universal gas constant [J mol�1 K�1], M the molar mass of water Flue gas desulfurization of one power station block creates up to 20 t of FGD gypsum per hour. keywords: cup; czech; fgd; gypsum; moisture; properties; strength; vapor; water cache: ap-626.pdf plain text: ap-626.txt item: #1192 of 1656 id: ap-628 author: Doležel, T.; Drdácký, M.; Konvalinka, P.; Kopecký, L. title: Experimental Analysis of Sandstone and Travertine date: 2004 words: 1131 flesch: 50 summary: 90 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 44 No. 5–6/2004 Fig. 3: EDAX point analysis of the chlorite group minerals in the cement matrix of the rocks. Keywords: sandstone, travertine, EDAX point analysis, microscopic analysis, stress-strain diagram in compression, modulus of elasticity. keywords: fig; sandstone; travertine cache: ap-628.pdf plain text: ap-628.txt item: #1193 of 1656 id: ap-6284 author: Deuring, Paul; Kračmar, Stanislav; Nečasová, Šárka title: NOTE ON THE PROBLEM OF MOTION OF VISCOUS FLUID AROUND A ROTATING AND TRANSLATING RIGID BODY date: 2021 words: 5395 flesch: 78 summary: Let S > 0 with Ωc ⊂ BS , R ∈ [2S,∞), F ∈ L6/5(ΩR)3, b ∈ H1/2(∂Ω)3. 1≤k≤3 for x ∈ ∂BR, R ∈ (0,∞) with D ⊂ BR, u ∈W 2, 6/5(ΩR)3, π ∈W 1, 6/5(ΩR). keywords: theorem cache: ap-6284.pdf plain text: ap-6284.txt item: #1194 of 1656 id: ap-6289 author: Ižvolt, Libor; Dobeš, Peter; Mečár, Martin title: TESTING THE SUITABILITY OF THE EXTRUDED POLYSTYRENE (STYRODUR) APPLICATION IN THE TRACK SUBSTRUCTURE date: 2020 words: 4653 flesch: 49 summary: 8 shows the dependence of the thickness of the crushed aggregate sub-ballast layer on the required value of the static deformation modulus Esi of the sub-ballast upper surface (Esbl) for the standard struc- ture of sub-ballast layers (sub-ballast layer of crushed aggregate only) and higher deformation resistance of the subgrade surface E0 =approx. Placing the XPS at the bottom of sub-ballast layers has several drawbacks, namely: • it must withstand significant traffic loads, • it is worn due to a considerable contact stress with the ballast bed material, • the track substructure may freeze from the side, especially in the case of a railway line in the em- bankment. keywords: ballast; deformation; deformation resistance; layers; sub; subgrade; subgrade surface; surface; xps cache: ap-6289.pdf plain text: ap-6289.txt item: #1195 of 1656 id: ap-630 author: Řeřicha, P. title: Mohr-Coulomb Failure Condition and the Direct Shear Test Revisited date: 2004 words: 2376 flesch: 71 summary: The nor- mal and tangential traction components on the plane are � �� � � � �n n n n� �� 2 . � �� � �0 5 266 , c � 1 in the rendulic plane � �1 2� . keywords: coulomb; plane; tan �; � z; � � cache: ap-630.pdf plain text: ap-630.txt item: #1196 of 1656 id: ap-6304 author: Bodnár, Tomáš; Fraunié, Philippe; Kozel, Karel title: MODIFIED EQUATION FOR A CLASS OF EXPLICIT AND IMPLICIT SCHEMES SOLVING ONE-DIMENSIONAL ADVECTION PROBLEM date: 2021 words: 6055 flesch: 59 summary: 7. Remark on applications Based on a detailed knowledge of the diffu- sive/dispersive behavior of numerical schemes, suit- able strategy can be chosen to improve their properties, namely the stability and resolution. This led to a discussion concerning the diffusive and dispersive properties of numerical schemes. keywords: advection; equation; numerical; schemes; solution cache: ap-6304.pdf plain text: ap-6304.txt item: #1197 of 1656 id: ap-632 author: Kuklík, P.; Kopáčková, M. title: Efficient Analytical Model for Calculation of the Influence Zone inside the Subsoil below Foundations Slabs date: 2004 words: 4247 flesch: 65 summary: h Hz w w1 2� � � �( ) ( )� � � . Conse- quently, only the odd terms, j n� �2 1, n �0 1 2, , ,�, in series (1) are considered. keywords: influence; stress; � z; � � cache: ap-632.pdf plain text: ap-632.txt item: #1198 of 1656 id: ap-634 author: Teplý, B.; Rovnaník, P.; Keršner, Z.; Rovnaníková, P. title: How Reliable is the Durability of RC Structures? date: 2004 words: 2164 flesch: 45 summary: RC_LifeTime offers the following options: Service Life Assessment – a statistical evaluation of service life, where optionally the target value of reliability index � may be an additional input value and then the corresponding service life is the output value Concrete Cover Assessment – a statistical evaluation of concrete cover value for the target service life, where optionally the required concrete cover value may be input in this case and the relevant reliability index � describes the reliability of reinforcement depassivation. Optionally, required concrete cover value may be input and the relevant reliability index � is then an output value (describing the reliability of reinforcement depassivation). keywords: carbonation; concrete; life; reliability; service; value cache: ap-634.pdf plain text: ap-634.txt item: #1199 of 1656 id: ap-6340 author: Mára, Michal; Sovják, Radoslav; Fornůsek, Jindřich title: USING TEXTILE ARAMID FABRICS TO INCREASE THE BALLISTIC RESISTANCE OF ULTRA-HIGH-PERFORMANCE STEEL-FIBRE REINFORCED CONCRETE date: 2020 words: 4116 flesch: 61 summary: The Ultra-High-Performance Steel-Fibre-Reinforced Concrete with dispersing steel fibres seems to be one of the highly promising materials, which can be used in these cases One of the future challenges in terms of increasing the ballistic resistance would be aimed towards the targeted orientation of steel fibres in the cement matrix where it is possible to provide the requested position and direction of fibres, solving the main problem of the design. keywords: aramid; concrete; fabrics; impact; projectile; resistance; sfrc; steel; textile; uhp cache: ap-6340.pdf plain text: ap-6340.txt item: #1200 of 1656 id: ap-6343 author: Kravcov, Alexander; Kosturek, Robert; Śnieżek, Lucjan; Kluczyński, Janusz; Franek, Ondřej; Morozov, Nikolaj; Maciejewski, Pawel title: THE INFLUENCE OF FRICTION STIR WELDED PROCESS PARAMETERS OF AA2519-T62 ON JOINT QUALITY DEFINED BY NON-DESTRUCTIVE LASER AMPLIFIED ULTRASONIC METHOD AND BY MICROSTRUCTURE ANALYSIS date: 2020 words: 2798 flesch: 57 summary: The influence of friction stir welded process parameters. . . The influence of friction stir welded process parameters. . . keywords: friction; joint; materials; microstructure; samples; stir; tool; welding; zone cache: ap-6343.pdf plain text: ap-6343.txt item: #1201 of 1656 id: ap-636 author: Novák, D.; Lehký, D. title: Neural Network Based Identification of Material Model Parameters to Capture Experimental Load-deflection Curve date: 2004 words: 4248 flesch: 52 summary: The aim of this paper is to present a new approach for identifying material model parameters. Once the network is trained it represents an approx- imation which can be utilized in a reverse way: for a given experimental load-deflection curve to provide the best possi- ble set of material model parameters. keywords: deflection; layer; load; material; model; network; parameters; � � cache: ap-636.pdf plain text: ap-636.txt item: #1202 of 1656 id: ap-6362 author: Askarova, Aliya; Šafařík, Pavel; Nugymanova, Aizhan; Bolegenova, Saltanat; Maximov, Valeriy; Bolegenova, Symbat title: MINIMIZATION OF TOXIC EMISSIONS DURING BURNING LOW-GRADE FUEL AT KAZAKHSTAN THERMAL POWER PLANT date: 2020 words: 4552 flesch: 57 summary: Computational method for investigation of solid fuel combustion in combustion chambers of a heat power plant. Computational modeling of heat and mass transfer processes in combustion chamber at power plant of kazakhstan. keywords: air; boiler; chamber; combustion; injectors; ofa cache: ap-6362.pdf plain text: ap-6362.txt item: #1203 of 1656 id: ap-638 author: Štemberk, P.; Kruis, J. title: Fuzzy Dynamic Analysis of a 2D Frame date: 2004 words: 3167 flesch: 56 summary: ( ).k k k kb b b� � �� � � (6) The first five mode shapes are shown in Figs. The intervals defined for a specific value of the membership function, e.g. � � 0.7, represent the so-called �-cuts. keywords: analysis; data; function; numbers; response; � � cache: ap-638.pdf plain text: ap-638.txt item: #1204 of 1656 id: ap-640 author: Křístek, V. title: A Shear Lag Analysis for Composite Box Girders with Deformable Connectors date: 2004 words: 4419 flesch: 64 summary: Thus, assuming the origin of the traverse co-ordinate y to be taken at the mid-width of the flange, i. e. at the axis of symmetry, then, because of the symmetry C Cj j3 4 0, ,� � (32) so that from equations (28) and (30), the distributions across the flange width of the normal forces in the steel flange and in the concrete layer are governed by: s j j j j jN y C P y C P y( ) ( ) ( ), , , ,� �1 1 2 2 (33) �c j j j j j j j j j j N y c C r P y s x c c x c c u x n t E � � � � � , (4) s y s s x s s x s s n t E � � � �� � � � , (5) keywords: c j; j j; s j; y �; � c; � j; � � cache: ap-640.pdf plain text: ap-640.txt item: #1205 of 1656 id: ap-642 author: Wald, F.; Studecká, P.; Kroupa, L. title: Temperature of Steel Columns under Natural Fire date: 2004 words: 4821 flesch: 61 summary: The accurate and simple step-by-step calculation proce- dure is based on the principle that the heat entering the steel over the exposed surface area in a small time step � t (taken as 30 seconds maximum) is equal to the heat required to raise the temperature of the steel by �a,t (at time t) assuming that the steel section is a lumped mass at uniform temperature, so that � , ,�� �q F t c Va a t a t� �� � , (1) where �a is the unit mass of steel, ca,t is the temperature de- pendent specific heat of steel, V is the volume of the member per unit length, and ���q is the heat transfer at the surface, given by � ( ) ( ), , , ,�� � � � �q hc g t a t g t a t� � � �� � � � � �4 4 , (2) where hc is the convective heat transfer coefficient, � is the Stefan-Bolzman constant (56.7 10�12 kW m�2 K�4), � is the resultant emissivity, and �� g t, is the increase of the ambient gas temperature during the time interval � t. Eqs (1) and (3) may be rearranged to give � �� � � � � �� � � � �� � �a t m a a c g t a t g t a t A V c h t, , , , ,( ) ( )� � � �4 4 , (3) where Am/V is the section factor for unprotected steel mem- bers, Am is the surface area of the member per unit length. i, ,� �2 , where Ai is the cross-section area of the insulating material and A is the cross-section area of the steel. keywords: column; compartment; fig; fire; m �; min; steel; temperature; � � cache: ap-642.pdf plain text: ap-642.txt item: #1206 of 1656 id: ap-6431 author: Dlesk, Adam; Vach, Karel; Pavelka, Karel title: STRUCTURE FROM MOTION PROCESSING OF ANALOGUE IMAGES CAPTURED BY ROLLEI METRIC CAMERA, DIGITIZED WITH VARIOUS SCANNING RESOLUTION date: 2020 words: 8021 flesch: 61 summary: A parameter, which each side of image resolution divides by 4, had to be used. In the case of point clouds generated in Agisoft PhotoScan, p-values computed by Shapiro-Wilk test showed a sufficient confidence except for sets ∆X and ∆Y at the point cloud generated from the 1000 dpi scanning resolution images, see Tab. 9. keywords: agisoft; cdw; dpi; images; micmac; photoscan; points; processing; resolution; scanning cache: ap-6431.pdf plain text: ap-6431.txt item: #1207 of 1656 id: ap-644 author: Plachý, T.; Polák, M. title: Nondestructive Damage Detection Based on Modal Analysis date: 2004 words: 3998 flesch: 57 summary: For damage detection and localization on this bridge the use of natural frequency changes, changes of mode surface curvature CAMOSUC( j),x, changes of modal flexibil- ity matrix �[�] and the second derivative of changes of the di- agonal members of a modal flexibility matrix �[ ]� �� proved to be appropriate. Keywords: modal analysis, natural mode, natural frequency, damage detection, MAC, COMAC, service life, fatigue. keywords: bridge; change; fig; modal; state cache: ap-644.pdf plain text: ap-644.txt item: #1208 of 1656 id: ap-646 author: Šmilauer, V.; Máca, J.; Valášek, M. title: Dynamic Bridge Response for a Bridge-friendly Truck date: 2004 words: 2909 flesch: 69 summary: 2 12 1 2 12 20 2 02 20 2 2�� ( ) ( ) �� � � � � � � � � � � � � �� ( ) ,z t02 (3) � �m z k z z b F k z z t b z d3 3 13 1 3 13 30 3 03 30 3 4�� ( ) ( ) �� � � � � � � � � � � � � �� ( ) ,z t03 (4) F b z z b z a b z a zd f f f12 1 2 02 2 1 12 1 2� � � � � � � �( � � ) ( � � ) ( � � � )� � � � � � �� �k z z k z a zf f10 2 02 12 1 2( ) ( ) ,� (5) F b z z b z b b z b zd r r r13 1 3 03 2 1 12 1 3� � � � � � � �( � � ) ( � � ) ( � � � )� � � � � � �� �k z z k z b zr r10 3 03 12 1 3( ) ( ) ,� (6) z t z zr02 4( ) ,� � (7) z t z zr03 5( ) ,� � (8) where z4, z5 are the bridge displacements and zr is a road ir- regularity. (9) The second performance criterion considered driver comfort in the form of truck sprung mass acceleration: ACC z a tSUM t � �� (�� �� )1 2 0 � d . keywords: bridge; fig; model; z z; � � cache: ap-646.pdf plain text: ap-646.txt item: #1209 of 1656 id: ap-648 author: Němeček, J.; Padevět, P.; Bittnar, Z. title: Effect of Stirrups on Behavior of Normal and High Strength Concrete Columns date: 2004 words: 4314 flesch: 60 summary: [16] for concrete columns with pretensioned carbon fiber polymer tubes. [7] Brocca M., Bažant Z. P.: “Size effect in concrete columns: Finite-element analysis with microplane model.” keywords: columns; concrete; fig; microplane; model; peak; series cache: ap-648.pdf plain text: ap-648.txt item: #1210 of 1656 id: ap-650 author: Kabele, P. title: A Simplified Analysis of the Post-buckling Behavior of a Compressed Reinforcing Bar date: 2004 words: 3054 flesch: 62 summary: Since axial straining of the central line is neglected [Assumption (4)], the strain can be expressed as: � � �� � , (1) where � denotes the local axis normal to and originating at the central line, and � is the curvature of the central line. On these sections, the rupture criterion is first satisfied at the most distant points with � �� ext . keywords: bar; plastic; � � cache: ap-650.pdf plain text: ap-650.txt item: #1211 of 1656 id: ap-652 author: Dimitrovová, Z. title: A New Methodology to Establish Upper Bounds on Open-Cell Foams Homogenized Properties date: 2004 words: 12455 flesch: 66 summary: 3: Specification of optimal media response i 1y 2y 3y iN iN i� il iA bari Fig. 4: Specification of the i-bar within the basic cell Taking into account (22–23), (20) can be substituted into (4) giving: � �� � � � � 1 1 1 2 3 1 2 3V V T T TS N R R R Q Q Q N, , , , , , (28) and (21) into (5) as: W V Es � N 2 2 , (29) where S will be named as the modified static matrix. Using superposition, the necessary maximality condition from Table 2 reads as: N ( P P P P P P� � 1 2 1 1 1 2 2 3 3 1 1 2 2 3 3 G* ) ,� � � � � � (36) where the coefficients �i are expressing the particular basic cases combination, corresponding to the imposed macroload. keywords: cell; e �; j �; media; q �; s �; sin �; � cos; � g; � jk; � k; � l; � � cache: ap-652.pdf plain text: ap-652.txt item: #1212 of 1656 id: ap-654 author: Konrad, M.; Chudoba, R. title: The Influence of Disorder in Multifilament Yarns on the Bond Performance in Textile Reinforced Concrete date: 2004 words: 4027 flesch: 53 summary: The improvement of the local bond performance is counterpro- ductive and results in an earlier failure of the outer filaments with higher bond performance. Particular interest is paid to the influence of irregularities in the micro-structure (relative differences in filament lengths, varying bond quality, bond-free length) for different levels of local bond quality between the filament surface and the matrix. keywords: bond; fig; filaments; matrix; maximum; pull; yarn cache: ap-654.pdf plain text: ap-654.txt item: #1213 of 1656 id: ap-656 author: Procházka, P. P. title: Micromechanics Based Inelastic and Damage Modeling of Composites date: 2004 words: 5117 flesch: 59 summary: The Lippman-Schwinger equation has the form: � �� � � � � � � �( ) ( ) ) (40) It is worth noting that the stress concentration factor can be derived in the same way: � �� � ��B � � �f m (41) keywords: y y; šejnoha; � f; � l; � r; � � cache: ap-656.pdf plain text: ap-656.txt item: #1214 of 1656 id: ap-6575 author: Yusuff, Adeyinka Sikiru; Popoola, Lekan Taofeek; Anochie, Victor title: Utilization of agricultural waste adsorbent for the removal of lead ions from aqueous solutions date: 2021 words: 5454 flesch: 53 summary: SEM micrographs of CMOSW sample (a) prior to and (b) after Pb2+ ions adsorption. Adsorption removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies. keywords: adsorbent; adsorption; cmosw; equilibrium; ions; lead; order; pb2; removal; solution; waste cache: ap-6575.pdf plain text: ap-6575.txt item: #1215 of 1656 id: ap-658 author: Zeman, J.; Valenta, R.; Šejnoha, M. title: On Adequacy of Two-point Averaging Schemes for Composites with Nonlinear Viscoelastic Phases date: 2004 words: 6713 flesch: 54 summary: Admitting only small strains and isotropic ma- terials, a set of constitutive equations defining the generalized compressible Leonov model can be written as � �m K� , (18) � ( � � ), ,sij ij ij pG e e� � �� �2 , (19) � ( ) ( ), , , , e s s ij p ij eq ij eqa� � � � � � � � � � 1 2 1 2 0 , (20) � � � � � ij m ij ij ij ij M � � � � s s s, , 1 , (21) where �m is the mean stress, � is the volumetric strain, K is the bulk modulus, G� is the shear modulus of the �-th unit and �ij is the Kronecker delta. In particular, under the ergodic hypothesis [21] the vol- ume average of function � �r( , )x given by � � �r V r V V ( , ) lim ( )x x y y� � �� � 1 d , (2) is independent of � and identical to the ensemble average � �r r r rS c( ) ( ) ( )x x x� � � , (3) where cr is the volume fraction of the rth phase. keywords: fig; matrix; model; response; strain; stress; vol; y �; � d; � e12; � r; � � cache: ap-658.pdf plain text: ap-658.txt item: #1216 of 1656 id: ap-6580 author: Siddika, Ayesha; Amin, Md. Ruhul; Rayhan, Md. Abu; Islam, Md. Saidul; Mamun, Md. Abdullah Al; Alyousef, Rayed; Amran, Y. H. Mugahed title: PERFORMANCE OF SUSTAINABLE GREEN CONCRETE INCORPORATED WITH FLY ASH, RICE HUSK ASH, AND STONE DUST date: 2021 words: 8298 flesch: 60 summary: Influence of silpozz and rice husk ash on enhancement of concrete strength. Use of ultrafine rice husk ash with high-carbon content as pozzolan in high performance concrete. keywords: addition; ash; cement; concrete; doi:10.1016; materials; properties; replacement; rha; rice; specimens; strength; water cache: ap-6580.pdf plain text: ap-6580.txt item: #1217 of 1656 id: ap-660 author: Skokánek, J. title: Deformation Stress State of Elastic Bodies date: 2005 words: 6846 flesch: 55 summary: d dsfN F A� � � �� � �� � �cos cos cos . This means that the positive part of the internal force F2(+) gener- ated by the positive deformation force effect on the half of the element above the cross section surface is in equilibrium with the negative part of the internal force F2(�) generated by the negative deformation force effect F F2 2 0( ) ( )� �� � . keywords: deformation; deformation stress; force; state; stress state; stress �; � cos; � � cache: ap-660.pdf plain text: ap-660.txt item: #1218 of 1656 id: ap-662 author: Čepek, A.; Pytel, J. title: A Progress Report on Numerical Solutions of Least Squares Adjustment in GNU Project Gama date: 2005 words: 5470 flesch: 54 summary: [Modified Gram–Schmidt (MGS) column version] for k � 1 2, , ,� n for i k� �1 2 1, , ,� r q a a a r qik k T k i k i k i ik i: ; : ;( ) ( ) ( )� � ��1 end � : ; : ( � � ) ;( )q a r q qk k k kk k T k� � 1 2 q q rk k kk: � ;� end Algorithms 1.3 For any real m×n matrix A, m � n, there exists the singular value decomposition A UW V� � (26) � � � � � �U U VV V V1 1, , where U is an m×n matrix with orthogonal columns, W is a diagonal matrix n×n with nonnegative elements and V is a square orthogonal matrix n×n, (this variant is referred to as the thin SVD [3]). keywords: adjustment; columns; equations; gama; matrix; orthogonalization; project; � � cache: ap-662.pdf plain text: ap-662.txt item: #1219 of 1656 id: ap-6624 author: Yin, Edward; Seckley, Emmanuel M.; Asiedu, Evans Kesse; Cobbinah, Stephen title: STRESS ANALYSIS AND TOPOLOGY OPTIMIZATION OF A CHAIN BUCKET ELEVATOR USING ANSYS date: 2021 words: 7780 flesch: 66 summary: [9] designed a combi- nation of a belt conveyor and chain bucket elevator, which is controlled automatically by a micro controller with a weight sensor attached to it for packaging. Metallographic failure analysis on bucket elevator conveyor chain links. keywords: analysis; beam; bucket; bucket elevator; chain; chain bucket; design; elevator; failure; optimization; pawl; spring; stress cache: ap-6624.pdf plain text: ap-6624.txt item: #1220 of 1656 id: ap-6627 author: Schoř, Pavel; Kouřil, Martin; Daněk, Vladimír title: SIMULATION OF A MANEUVERING AIRCRAFT USING A PANEL METHOD date: 2021 words: 5996 flesch: 60 summary: To obtain the correct solution of the circulation, it is necessary to know the strength of doublet wake wake panels and their spatial locations. Keywords: Flight mechanics, aerodynamics, simulation, panel method, maneuvering aircraft. keywords: aircraft; body; control; data; equation; figure; flight; frame; method; panel; reference; simulation; wake cache: ap-6627.pdf plain text: ap-6627.txt item: #1221 of 1656 id: ap-6632 author: Costantino, Domenica; Pepe, Massimiliano; Angelini, Maria Giuseppa title: EVALUATION OF REFLECTANCE FOR BUILDING MATERIALS CLASSIFICATION WITH TERRESTRIAL LASER SCANNER RADIATION date: 2021 words: 6089 flesch: 55 summary: Moreover, the Table 2 also shows that the HDS3000 detects all the materials above mentioned discrimi- nating them in a limited range of reflectance values (0.4 − 0.6), while the HDS6100, although it records in a wider range, exactly equal to the interval (0 − 1), shows saturation for fewer materials, which would also justify the dispersion of values about the mean. By observing the reflectance data, it is possible to deduce that for all scanned materials varying the azimuthal angle of incidence and being equal in ev- ery other experimental parameter, reflectance values change in a consistent way with the degree of crys- tallinity of the scanned object. keywords: data; figure; hds6100; laser; materials; nadir; plaster; position; range; reflectance; scanning; tls; values cache: ap-6632.pdf plain text: ap-6632.txt item: #1222 of 1656 id: ap-6636 author: Lovska, Alyona; Fomin, Oleksij title: A NEW FASTENER TO ENSURE THE RELIABILITY OF A PASSENGER CAR BODY ON A TRAIN FERRY date: 2020 words: 3896 flesch: 64 summary: The conducted research may contribute to ensuring the required strength of passenger car bodies during train ferry transportation, thus leading to a higher operational efficiency of train ferry transportation within the international transportation. Recently, train ferries have been equipped with special fastening brackets for passenger car bodies (Figure 3). keywords: body; car; car body; cars; ferry; figure; passenger; passenger car; train; transportation cache: ap-6636.pdf plain text: ap-6636.txt item: #1223 of 1656 id: ap-6637 author: Kresan, Tetiana; Pylypaka, Serhii; Ruzhylo, Zynovii; Rogovskii, Ivan; Trokhaniak, Oleksandra title: EXTERNAL ROLLING OF A POLYGON ON CLOSED CURVILINEAR PROFILE date: 2020 words: 3513 flesch: 73 summary: According to the obtained equations, curvilinear profiles with different numbers of their elements are constructed. Keywords: Equilateral polygon, curvilinear profile, external rolling, differential equation, centroids. keywords: curve; curvilinear; number; polygon; profile; rolling; square cache: ap-6637.pdf plain text: ap-6637.txt item: #1224 of 1656 id: ap-664 author: Brůha, O.; Brůha, T. title: Heating and Cooling Anomaly of a Rotating Body date: 2005 words: 3171 flesch: 67 summary: According to (19) � � �t t t� �s * and then (20) reads: � � � � � * ( ) ( )( * ) ( * ) t E e E e m t t t t � � � �� � � � k0 s s c 1 12 0 6� � � , (21) where � ts is: � � t Q ms c � [1] (22) Expression (21) is a transcendent equation for unknown quantity � * t and given quantity � ts . (9) Substituting relations (6), (7), (8) and (9) in (5) we obtain an expression for rotational kinetic energy as a function of temperature E t r h e E et t k k0( ) � �� �1 4 0 4 2 0 0 2 2� � �� � �� � . keywords: energy; t �; � r; � � cache: ap-664.pdf plain text: ap-664.txt item: #1225 of 1656 id: ap-6643 author: Orlický, Adam; Mashko, Alina; Mík, Josef title: Assessment of external interface of autonomous vehicles date: 2021 words: 4468 flesch: 50 summary: The results of such studies provide more versatile results with vehicle behaviour. The method presented in this paper contributes to the safety of a vehicle-pedestrian communication of autonomous vehicles and is a part of a research that shall further contribute to the design and assessment of external communication interfaces of AV in general. keywords: behaviour; braking; communication; crossing; hmi; interface; pedestrian; road; subjects; vehicle cache: ap-6643.pdf plain text: ap-6643.txt item: #1226 of 1656 id: ap-6650 author: Haouam, Ilyas title: ON THE THREE-DIMENSIONAL PAULI EQUATION IN NONCOMMUTATIVE PHASE-SPACE date: 2021 words: 7310 flesch: 67 summary: Formulation of noncommutative Pauli equation The Pauli equation is the formulation of the Schrödinger equation for spin-1/2 particles, which was formulated by W. Pauli in 1927. Physics Letters A 381(44):3723 – 3725, 2017. doi:10.1016/j.physleta.2017.10.003. 241 http://dx.doi.org/10.1007/s002200050779 http://dx.doi.org/10.1007/PL00005547 http://dx.doi.org/10.1103/PhysRevLett.87.141601 http://dx.doi.org/10.1016/S0370-1573(03)00059-0 http://dx.doi.org/10.30970/jps.24.1801 http://dx.doi.org/10.1142/S0217732305017421 http://dx.doi.org/10.14311/AP.2020.60.0111 http://dx.doi.org/10.30970/jps.24.2002 http://dx.doi.org/10.3390/sym11020223 http://dx.doi.org/10.4236/ojm.2019.93003 http://dx.doi.org/10.1088/1361-6404/ab7495 http://dx.doi.org/10.6122/CJP.51.94 http://dx.doi.org/10.1088/1674-1137/32/5/002 http://dx.doi.org/10.1088/0253-6102/41/6/837 http://dx.doi.org/10.1016/j.physleta.2017.10.003 Acta Polytechnica 61(1):230–241, 2021 1 Introduction 2 Review of noncommutative algebra 3 Pauli equation in noncommutative phase-space 3.1 Formulation of noncommutative Pauli equation 3.2 Deformed continuity equation 3.3 Derivation of the magnetization current 4 Noncommutative Semi-classical Partition Function 5 Conclusion Acknowledgements References keywords: continuity; current; equation; field; function; noncommutative; pauli; pauli equation; phase; quantum; space cache: ap-6650.pdf plain text: ap-6650.txt item: #1227 of 1656 id: ap-6653 author: Al-Baidhani, Ali; Al-Taie, Abbas Jawad title: Performance characteristics of low carbon waste material to stabilise soil with extremely high plasticity date: 2021 words: 6345 flesch: 58 summary: Figure 7 highlights the variation of SP with BSD content; the LS values are also presented in Figure 7. Also, the effect of curing on the development of soil strength has been included. keywords: bsd; bsdc; bsdf; carbon; content; ehps; figure; improvement; materials; mixtures; properties; soil; strength; swell cache: ap-6653.pdf plain text: ap-6653.txt item: #1228 of 1656 id: ap-666 author: Almarimi, A.; Pokorný, J. title: Schema Management for Data Integration: A Short Survey date: 2005 words: 4106 flesch: 58 summary: Polytechnica Vol. 45 No. 1/2005 Czech Technical University in Prague Schema Management for Data Integration: A Short Survey A. Almarimi, J. Pokorný Schema management is a basic problem in many database application domains such as data integration systems. In general, data integration systems can be classified into data-warehouse and mediator-wrapper systems. keywords: data; database; information; integration; proc; schema; systems; xml cache: ap-666.pdf plain text: ap-666.txt item: #1229 of 1656 id: ap-668 author: Usama, S.; Montaser, M.; Ahmed, O. title: A Complexity and Quality Evaluation of Block Based Motion Estimation Algorithms date: 2005 words: 8521 flesch: 70 summary: Then for frame resolution I×J and frame rate F frames per second, the overall complexity is defined as: Complexity operation� � � � � IJF NM MNx Each pixel comparison requires four operations, namely, a subtrac- tion, an absolute-value calculation, one addition, and one division, if the cost of accessing pixels C x k y l( , )� � and R x keywords: algorithm; block; frame; point; search; size �; step; step size; � � cache: ap-668.pdf plain text: ap-668.txt item: #1230 of 1656 id: ap-670 author: Tesárek, P.; Pavlík, J.; Černý, R. title: Comparison of the Capacitance Method and the Microwave Impulse Method for Determination of Moisture Profiles in Building Materials date: 2005 words: 3205 flesch: 55 summary: Keywords: Moisture profiles, capacitance method, microwave impulse method, building materials. re c o n te n t [k g k g -1 ] capacitance method microwave method gravimetric method Fig. keywords: capacitance; capacitance method; content; impulse; method; microwave; moisture cache: ap-670.pdf plain text: ap-670.txt item: #1231 of 1656 id: ap-672 author: Hodač, J. title: 3D Information System of Historical Site – Proposal and Realisation of a Functional Prototype date: 2005 words: 4536 flesch: 55 summary: Work with 3D data is closely connected with development in computer graphics (virtual reality). Currently, customers demand docu- mentation predominantly in 2D form, and they do not want 3D data and models. keywords: data; information; project; site; technical; theatre cache: ap-672.pdf plain text: ap-672.txt item: #1232 of 1656 id: ap-6721 author: Hetyei, Csaba; Szlivka, Ferenc title: COUNTER-ROTATING DUAL ROTOR WIND TURBINE LAYOUT OPTIMISATION date: 2021 words: 4146 flesch: 55 summary: The swept area for dual rotor wind turbines vary depending on the second turbine’s position, its value can be between S = π · r2 and S = 2 · π · r2 (r is the swept area’s radius). Wind turbines are no exception. keywords: energy; figure; power; rotor; simulations; turbine; wind; wind turbine cache: ap-6721.pdf plain text: ap-6721.txt item: #1233 of 1656 id: ap-6737 author: Agárdi, Anita; Nehéz, Károly title: PARALLEL MACHINE SCHEDULING WITH MONTE CARLO TREE SEARCH date: 2021 words: 3172 flesch: 69 summary: Parallel machine scheduling problem of flexible maintenance activities with fuzzy random time windows. After that, the efficiency of the algorithms is tested with benchmark data, which result, that algorithms are suitable for solving production scheduling problems. keywords: job; machine; problem; scheduling; search; setup; times; tree cache: ap-6737.pdf plain text: ap-6737.txt item: #1234 of 1656 id: ap-674 author: Lemák, D.; Studnička, J. title: Influence of Ring Stiffeners on a Steel Cylindrical Shell date: 2005 words: 5058 flesch: 65 summary: 02� , (10) N D D D � � � � � � � � � � � 8306 10 4 020 10 1441 10 2940 1 11 3 07 2 04 . I D D� � �303 3350 8727002. . keywords: analysis; deformation; diameter; fig; model; shell; stiffeners; wind; � � cache: ap-674.pdf plain text: ap-674.txt item: #1235 of 1656 id: ap-6745 author: Měšťanová, Lucie; Bartoš, Ondřej title: AN ANALYSIS OF THE LIQUID FILMS BREAK-UP USING THE COMPUTER VISION TECHNIQUE date: 2021 words: 5858 flesch: 66 summary: Measurement method The wind tunnel is connected with the compressed air storage vessel or to the steam supply grid. Segmented images resulting from the GMM-based segmentation give the lowest number of foreground pixels. keywords: contour; distribution; droplets; figure; flow; image; liquid; measurement; method; number; otsu; steam; turbines cache: ap-6745.pdf plain text: ap-6745.txt item: #1236 of 1656 id: ap-6754 author: Ton-That, Hoang Lan title: A COMBINED STRAIN ELEMENT TO FUNCTIONALLY GRADED STRUCTURES IN THERMAL ENVIRONMENT date: 2020 words: 5988 flesch: 62 summary: Finite element analysis of functionally graded skew plates in thermal environment based on the new third-order shear deformation theory. A formulation of general shell elements-the use of mixed interpolation of tensorial components. keywords: analysis; bending; element; materials; plates; shear; strain; structures; sus304; temperature; theory cache: ap-6754.pdf plain text: ap-6754.txt item: #1237 of 1656 id: ap-676 author: Kubátová, H. title: Modeling by Petri Nets date: 2005 words: 4944 flesch: 69 summary: For a net sys- tem S �< NPT, m0> the set RS S m w T m mw( ): ,*� � � �0 , where T* is the sequence of transitions and w � T* and t � T, is the reachability set. � � � � � � �Pre Post0 0� This interpretation leads to the alternative definition, which is closer to the graphical representation. keywords: fig; net; nets; places; set; transition; � � cache: ap-676.pdf plain text: ap-676.txt item: #1238 of 1656 id: ap-6763 author: Rustam; Usman, Koredianto; Kamaruddin, Mudyawati; Chamidah, Dina; Nopendri; Saleh, Khaerudin; Eliskar, Yulinda; Marzuki, Ismail title: MODIFIED POSSIBILISTIC FUZZY C-MEANS ALGORITHM FOR CLUSTERING INCOMPLETE DATA SETS date: 2021 words: 7780 flesch: 64 summary: Bezdek and Hathaway [4] developed the FCM algorithm to deal with the problem of clustering data sets with missing values. Bezdek and Hathaway [4] modified the FCM using the PDS in order to deal with the problems associated with clustering incomplete data sets known as the PDSFCM algorithm. keywords: accuracy; algorithm; cluster; clustering; data; data sets; npspfcm; number; ocspfcm; percentage; values cache: ap-6763.pdf plain text: ap-6763.txt item: #1239 of 1656 id: ap-678 author: Bokr, J.; Jáneš, V. title: Realization of Logical Circuits with Majority Logical Function as Symmetrical Function date: 2005 words: 5854 flesch: 72 summary: 5: Recording of remainder functions � � y x1 from Example 5 � w y x x w y x x y x x w x x H H H � � ( ) ( , ) ( , ) ( 3 2 2 3 2 3 1 4 0 0 0 1 0 � � � � � � � � � � � � � �x x x x4 5 4 5 2) ( ) , � w y x x w y x x y x x w x x H H H � � ( ) ( , ) ( , ) ( 3 4 3 4 3 4 5 0 0 0 0 1 � � � � � � � � � �� 1 2 4� �x ) , � w y x x w y x x y x x w x x H H H � � ( ) ( , ) ( , ) ( 3 5 3 5 3 5 1 4 0 0 0 0 1 � � � � � � � � � � � � � � �x x x x x2 4 1 2 4 4) ( ) , � w y x x w y x x y x x w x x H H H � � ( ) ( , ) ( , )3 1 1 3 1 3 2 5 1 0 1 1 1 � � � � � � � � � �� ( ) ,x x For example: � � � � � �S x x x x x x x x x x x x x x x 2 3 2 3 1 3 1 2 1 3 2 3 1 2 3 1 2 3 1 2 3 � � � � � � � � � S S ( ) � � � � � � x x x S x x x x x x x x x x x 1 2 3 2 3 1 3 2 3 1 2 3 1 2 1 3 2 3 1 2 , resp. keywords: h �; m �; � w; � � cache: ap-678.pdf plain text: ap-678.txt item: #1240 of 1656 id: ap-6786 author: Lechman, Marek; Stachurski, Andrzej title: APPLICATION OF GLOBAL OPTIMIZATION TO PREDICT STRAINS IN RC COMPRESSED COLUMNS date: 2021 words: 5580 flesch: 68 summary: FE analysis of failure behaviour of reinforced concrete columns under eccentric compression. Effective flexural stiffness of slender reinforced concrete columns under axial forces and biaxial bending. keywords: a(1; a(2; bending; columns; compression; concrete; optimization; section; set cache: ap-6786.pdf plain text: ap-6786.txt item: #1241 of 1656 id: ap-6789 author: Ermis, Kemal; Caliskan, Mehmet; Tanriverdi, Muammer title: DESIGN OPTIMIZATION OF MOVEABLE MOMENT STABILIZATION SYSTEM FOR ACCESS CRANE PLATFORMS date: 2021 words: 4609 flesch: 57 summary: 229 http://dx.doi.org/10.1109/ICICIP.2010.5565257 http://dx.doi.org/10.15317/scitech.201426889 http://dx.doi.org/10.4236/ojsst.2012.21002 http://dx.doi.org/10.15632/jtam-pl.54.1.41 http://dx.doi.org/10.1016/j.compstruc.2006.08.010 http://dx.doi.org/10.1016/j.ijmecsci.2014.07.009 http://dx.doi.org/10.1016/j.proeng.2012.07.274 http://dx.doi.org/10.1016/j.csefa.2015.03.005 http://dx.doi.org/10.1016/j.egypro.2016.12.096 http://dx.doi.org/10.1115/DSCC2010-4241 http://dx.doi.org/10.1049/joe.2018.8961 http://dx.doi.org/10.2174/1874155X01408010219 http://dx.doi.org/10.1016/j.autcon.2007.05.004 http://dx.doi.org/10.1177/1687814018808697 http://dx.doi.org/10.1016/j.engfailanal.2016.12.006 http://dx.doi.org/10.3846/16484142.2011.642946 http://dx.doi.org/10.1109/icicip.2012.6391539 Acta Polytechnica 61(1):219–229, 2021 1 Introduction 2 The general structure of aerial work platforms 3 Work method 3.1 Outrigger contact force function formula 3.2 Improvement of aerial work platform structure 3.3 Mathematical model of aerial work platform 3.4 The process of structural and dynamic structural analysis 4 Results and discussion Acknowledgements References Improvement of aerial work platform structure The aim of this study is to increase the working efficiency of aerial work platforms a through lateral extension. keywords: analysis; figure; machine; model; msc; platform; structure; weight; work; work platform; working cache: ap-6789.pdf plain text: ap-6789.txt item: #1242 of 1656 id: ap-6795 author: Darmanto, Prihadi Setyo; Astina, I Made; Wardhana, Alfian Kusuma; Amalia, Alfi; Syahlan, Arief title: NEW METHOD EVALUATION OF DETAIL MATERIAL AND HEAT FLOWS FOR SINGLE STRING CEMENT CLINKER PLANT date: 2021 words: 10961 flesch: 63 summary: Heat flow of kiln feed gas resulting from the calcination process, mostly CO2, exits from SP (Eq. 19): Engas−kf = mgas−kf · hCO2(Thg1) The results of the mass and heat conservation calculation for each cyclone is highly useful for designing equipment, controlling the process and modifying equipment (e.g., estimating the rate of kiln feed flow to the calciner). keywords: air; cement; clinker; conservation; cooler; cyclone; feed; flow; gas; heat; heat conservation; heat flow; kiln; kiln feed; mass; plant; process; temperature cache: ap-6795.pdf plain text: ap-6795.txt item: #1243 of 1656 id: ap-680 author: Šoch, M.; Lórencz, R. title: Solving Inverse Kinematics – A New Approach to the Extended Jacobian Technique date: 2005 words: 4123 flesch: 62 summary: d dx J� �( )q q (3) [8] suggested a more general form of optimization with pseudo- -inverse by minimizing objective function g(q): � �d dq q q q q q � � � � �J x I J J+ + g ( ) ( ) ( ) ( ) � � � , (5) where I is identity matrix and � is positive gain constant. keywords: inverse; jacobian; joint; method; structure; � � cache: ap-680.pdf plain text: ap-680.txt item: #1244 of 1656 id: ap-6813 author: Cígler Žofková, Drahomíra; Frankl, Jiří; Frankeová, Dita title: Use of thermal analysis for the detection of calcium oxalate in selected forms of plastering exposed to the effects of Serpula lacrymans date: 2021 words: 3660 flesch: 57 summary: The most pronounced bands (peaks) in the thermal analysis, corresponding to the first and second stages of calcium oxalate decomposition, were recorded in mortar samples exposed to the activity of Serpula lacrymans. In the case of mortar samples from Hrádek nad Ohří, bands that correspond to the presence of calcium oxalate were recorded (∼1630 cm−1, 1320 cm−1 and a weak band of ∼780 cm−1), whose library spectra in a pure form are shown in 5 (e). keywords: analysis; calcium; decomposition; lacrymans; lime; mortar; oxalate; samples; serpula; wood cache: ap-6813.pdf plain text: ap-6813.txt item: #1245 of 1656 id: ap-6816 author: Tuháček, Martin; Franek, Ondřej; Svoboda, Pavel title: APPLICATION OF FMEA METHODOLOGY FOR CHECKING OF CONSTRUCTION’S PROJECT DOCUMENTATION AND DETERMINATION OF THE MOST RISK AREAS date: 2020 words: 4635 flesch: 53 summary: Experi- ence from practice proves that the processed project documentation suffers from many shortcomings, this is also confirmed by the following results of the analy- sis of expert opinions, which researches the cause of defects in construction projects [2]. In connection with the effective preparation of construction projects, we increasingly encounter the term Lean Construction keywords: construction; data; defects; documentation; fmea; method; project; project documentation; quality; research cache: ap-6816.pdf plain text: ap-6816.txt item: #1246 of 1656 id: ap-682 author: Bokr, J.; Jáneš, V. title: Trivial Logic Arrays date: 2005 words: 8801 flesch: 39 summary: 1 2 1 2 1 1 11 21 2 2 12 22 � � � � �� � � � �p p pe e, ,1 2 having in mind that the vector exciting function E sought for � �� � � � � �� �E p p m � � � � � � � � 0 1 2 0 1 0 1 , , , � � � � � �E q q q x x x e e e e e p m p p m p : , , , : : , 0 1 0 1 0 1 1 2 1 2 11 21 12 22 1 � � � � � e p2 represented by the system � � 12 1k k p � of components driving functions � � � � � � 12 2 1 2 1 2 1 2 0 1 0 1 0 1k p m p m k kq q q x x x e e : , , , , � � � � � � found according to the function +, and � and is represented by the system� �� j j n �1 of the component input functions � � � �� � � � � � � j p m n p m jq q q x x x y : , , , : : , . 0 1 0 1 0 1 1 2 1 2 � � � � Let � �� �M M M Min out out ext out int� , be the input (output, out- put external, output internal) matrix, (respectively) of the given dynamic object, i.e., � � � � � � � �M K In the case of single stimuli a, b, c, the noncritical pairs of state transitions on the state alphabet��q q�1 6 define � � � � �� �1 2 3 4 5 6, , , , , , � � � � � � �� �1 4 2 3 5 6, , , , , , � � � � � � �� �1 2 3 4 5 6, , , , , . keywords: system �; � c; � j; � m; � q; � t; � y; � � cache: ap-682.pdf plain text: ap-682.txt item: #1247 of 1656 id: ap-6823 author: Belloni, Eduarda da Silva; Clain, Fernanda Mazuco; Guilherme, Carlos Eduardo Marcos title: Post-impact mechanical characterization of HMPE yarns date: 2021 words: 3375 flesch: 62 summary: Impact load setting Table 3 shows the results of impact tests for different loads, shown in terms of percentage of the YBL, from a height of 300mm. Conclusions This study demonstrates that the mechanical be- haviour of a material changes when it is subjected to impact loads. keywords: fatigue; figure; hmpe; impact; load; samples; tests; virgin; yarns; ybl cache: ap-6823.pdf plain text: ap-6823.txt item: #1248 of 1656 id: ap-6833 author: Minchev, Dmytro S.; Varbanets, Roman A.; Alexandrovskaya, Nadiya I.; Pisintsaly, Ludmila V. title: Marine diesel engines operating cycle simulation for diagnostics issues date: 2021 words: 4196 flesch: 50 summary: An estimation of the fuel-injection and power load irregularity by engine cylinder; (2.) The ongoing monitoring of marine diesel engines helps to detect the deviations of its parameters early and prevent major failures. keywords: cylinder; diesel; engine; exhaust; fuel; marine; mathematical; pressure; simulation; valve cache: ap-6833.pdf plain text: ap-6833.txt item: #1249 of 1656 id: ap-6836 author: Dvořáková, Ľubomíra; Kruml, Stanislav; Ryzák, David title: Antipalindromic numbers date: 2021 words: 4982 flesch: 69 summary: Conclusion and open problems In this paper, we carried out a thorough study of antipalindromic numbers and described known results regarding palindromic numbers in order to draw a comparison. In this paper, we define and study antipalindromic numbers: positive integers whose expansion in a certain integer base is an antipalindrome. keywords: antipalindromic; base; number cache: ap-6836.pdf plain text: ap-6836.txt item: #1250 of 1656 id: ap-684 author: Korbel, S.; Jáneš, V. title: Implementation of a Microcode-controlled State Machine and Simulator in AVR Microcontrollers (MICoSS) date: 2005 words: 4682 flesch: 59 summary: Keywords: state machine, microcontroller, microprogramming, software implementation of a simulator. Although we have now switched when designing microcomputers to standard circuit control units, state machines are still important. keywords: bits; control; czech; device; fig; level; machine; simulator; state; state machine cache: ap-684.pdf plain text: ap-684.txt item: #1251 of 1656 id: ap-6849 author: Ayeleso, Ayokunle O.; Raji, Atanda K. title: A CONCEPTUAL STUDY OF A LIQUID METAL ALLOY IN A DISK-SHAPED MAGNETOHYDRODYNAMICS CONVERSION SYSTEM date: 2021 words: 5166 flesch: 58 summary: Flow rate measurements in turbulent liquid metal channel flow using Time-of-Flight Lorentz force velocimetry. Numerical and experimental study of the traveling magnetic field effect on the horizontal solidification in a rectangular cavity part 1: Liquid metal flow under the TMF impact. keywords: channel; current; density; disk; flow; fluid; liquid; magnetic; mhd; study; velocity cache: ap-6849.pdf plain text: ap-6849.txt item: #1252 of 1656 id: ap-6850 author: Pinheiro, Paulo Henrique Barbosa de Souza; Santos, Mayara Helena Moreira Nogueira; Colombini, Angelo Cesar; França, Bruno Wanderley; Fortes, Marcio Zamboti title: Detailed modelling and analysis of digital mho distance relay with single-pole operation date: 2021 words: 6518 flesch: 57 summary: An extension of an existing ground distance relay algorithm to include phase distance relays is presented in [3]. There are many types of distance relays, from electromechanical ones to the latest computer relays. keywords: detection; distance; distance relay; fault; figure; impedance; line; mho; phase; power; protection; relay; time; zone cache: ap-6850.pdf plain text: ap-6850.txt item: #1253 of 1656 id: ap-6855 author: Al-mashaal, Asaad K. Edaan; Cheung, Rebecca title: Delamination of polyimide in hydrofluoric acid date: 2021 words: 3060 flesch: 57 summary: This study is intended to provide the information on the compatibility of using polyimide films with HF, which can help in the design and fabrication of polyimide-based devices. The importance of polyimide films is due to their outstanding thermal, mechanical, and chemical prop- erties. keywords: delamination; etchant; etching; figure; film; polyimide; silicon; substrate cache: ap-6855.pdf plain text: ap-6855.txt item: #1254 of 1656 id: ap-686 author: Fišer, P.; Kubátová, H. title: Pseudorandom Testing – A Study of the Effect of the Generator Type date: 2005 words: 5764 flesch: 68 summary: LFSR patterns by the Decoder. First we show that the testability and the fault coverage achieved by a certain number of pseudo-random test vectors strictly depend on the tested circuit. keywords: bist; faults; fig; lfsr; number; patterns; pseudo; seed; test cache: ap-686.pdf plain text: ap-686.txt item: #1255 of 1656 id: ap-6861 author: Bozca, Mehmet title: EFFECTS OF DESIGN PARAMETERS ON STATIC EQUIVALENT STRESS OF RADIAL ROLLING BEARINGS date: 2021 words: 4645 flesch: 67 summary: Point contact results in a con- tact pressure and contact stress between two spherical surfaces. Line contact results in a contact pressure and contact stress between two cylindrical surfaces. keywords: ball; bearing; contact; element; pressure; results; roller; stress cache: ap-6861.pdf plain text: ap-6861.txt item: #1256 of 1656 id: ap-6863 author: Samsonovich, Semen L.; Fedotov, Boris K.; Rozhnin, Nikolay B.; Goryunov, Roman V. title: Results of research on backlash compensation in a power electric drive by low-power electronic device date: 2022 words: 4675 flesch: 57 summary: Keywords: Backlash, backlash compensation device, multi-motor drive, tandem control. Backlash compensation device with cross connections The disadvantage of the known method of backlash compensation, based on the introduction of displace- Figure 4. keywords: backlash; backlash compensation; control; device; displacement; drive; electric; figure; signal; torques cache: ap-6863.pdf plain text: ap-6863.txt item: #1257 of 1656 id: ap-6867 author: Vokál, Marek; Drahorád, Michal title: NON-LINEAR ANALYSIS OF SLENDER MASONRY COLUMN SUBJECTED TO BIAXIAL BENDING date: 2021 words: 6427 flesch: 68 summary: The results of this study are also compared to the results of laboratory tests of masonry columns. In the study of non-linear be- haviour of masonry columns, six basic possibilities are used, see Figure 8, the rigid plastic can be seen in Figure 9: Linear-plastic, parabolic-plastic (parabolic- rectangular) and rigid-plastic diagrams are given in [1]. keywords: column; cross; figure; linear; masonry; non; plastic; section; shape; strain; stress cache: ap-6867.pdf plain text: ap-6867.txt item: #1258 of 1656 id: ap-6868 author: Procházka, Jiří; Pollert, Jaroslav title: OPTIMIZING EFFICIENCY OF THE COMBINED SEWER OVERFLOW CHAMBER HOBAS date: 2020 words: 4460 flesch: 62 summary: 15 shows the process of the self-cleaning ef- fect of swinging screen bars, which occurs during the simulation of the ending rain event, when a gradual decrease in the level in the CSO causes a significant oscillation of the free ends of the rods of screen bars from which all remaining impurities are released. The main goal of the research was to determine the pressure losses of the overflow chamber under various conditions - without self-clean screen bars; with screen bars without impurities and with screen bars partially or fully clogged with various impurities. keywords: chamber; cso; hobas; losses; overflow; rods; screen bars; self cache: ap-6868.pdf plain text: ap-6868.txt item: #1259 of 1656 id: ap-688 author: Schmidt, J.; Novotný, M. title: Scalable Normal Basis Arithmetic Unit for Elliptic Curve Cryptography date: 2005 words: 5140 flesch: 65 summary: i m i m� � � � �� �, , , ,0 1 2 1� (2) The number of clock cycles necessary for one point addition or doubling is then: � � � � C m w m C m w m C const PADD MUL SQR � � � � � � � � � � � � log ( ) ( ) ( ) 2 1 1 1 1 . (3) We can reduce the number of clock cycles CPADD in two ways: by reducing the number of clock cycles CMUL of the multiplications and the number of clock cycles CSQR of the iterative squaring.0 Both the Massey-Omura and the AMOV multipliers need m clock cycles for computing all m bits of the result. keywords: clock; cycles; multiplier; time; � � cache: ap-688.pdf plain text: ap-688.txt item: #1260 of 1656 id: ap-6885 author: Diskaeva, Elena Igorevna; Vecher, Olga Vladimirovna; Bazikov, Igor Alexandrovich; Elbekyan, Karine Sergeevna; Diskaeva, Elena Nikolaevna title: DEPENDENCE OF THE VISCOSITY COEFFICIENT OF THE NIOSOMAL DISPERSION ON THE TEMPERATURE AND PARTICLE SIZE OF THE DISPERSED PHASE date: 2021 words: 2918 flesch: 52 summary: Viscosity coefficients dispersions with different vol- ume concentrations differ and grow with an increase in the diameter of niosomal vesicles. The aim of this study was to experimentally investigate the dependence of viscosity coefficient of niosomal dispersion based on PEG-12 Dimethicone on the temperature and size of niosomes vesicles. keywords: coefficient; dependence; dispersion; niosomal; niosomes; particle; size; temperature; viscosity cache: ap-6885.pdf plain text: ap-6885.txt item: #1261 of 1656 id: ap-6888 author: Aminou Moussavou, Anges A.; Raji, Atanda K.; Adonis, Marco title: STRATEGIC MODULATION OF THERMAL TO ELECTRICAL ENERGY RATIO PRODUCED FROM PV/T MODULE date: 2021 words: 5752 flesch: 55 summary: Analysis of solar PV cell performance with changing irradiance and temperature. Radiation heat transfer versus Rse. 319 A. A. Aminou Moussavou, A. K. Raji, M. Adonis Acta Polytechnica Figure 10. PV cell temperature versus Rse. keywords: cell; energy; figure; heat; module; photovoltaic; power; pv cell; resistance; rse; solar; system; temperature; thermal cache: ap-6888.pdf plain text: ap-6888.txt item: #1262 of 1656 id: ap-6889 author: Chudoba, Josef; Královcová, Jiřina; Landa, Jiří; Maryška, Jiří; Říha, Jakub title: A model of isotope transport in the unsaturated zone, case study date: 2022 words: 7182 flesch: 62 summary: This work deals with a groundwater flow and solute transport model in the near-surface (predomi- nantly unsaturated) zone. A prediction of radionuclide concentration distribution in groundwater is done by transport simulations along with groundwater flow simulations (both mainly in saturated zone). keywords: boundary; case; concentration; domain; flow; model; simulation; time; transport; zone cache: ap-6889.pdf plain text: ap-6889.txt item: #1263 of 1656 id: ap-690 author: Buček, J.; Hlaváč, J.; Matušková, M.; Lórencz, R. title: Cost-Effective Architectures for RC5 Brute Force Cracking date: 2005 words: 4032 flesch: 68 summary: i i t� �( ) mod1 ; j j c� �( ) mod1 ; 2.3 Decryption The following decryption routine assumes that the array S contains the mixed key and that the ciphertext block is in registers A and B. for i r� downto 1 do B B S i� � �( [ ])2 1 � �A A� ; The plaintext is assumed to be in A and B. A A S� � [ ]0 ; B B S� � [ ]1 ; for i �1 to r do A A B� �( ) � �B S i� [ ]2 ; B B A� �( ) � �A S i� �[ ]2 1 ; 3 keywords: decryption; expansion; fig; key; rc5; � � cache: ap-690.pdf plain text: ap-690.txt item: #1264 of 1656 id: ap-6903 author: Senthilkumar, Jadamuni; Kumar, Pavan S. M.; Balasubramanian, Manickam title: An Investigation of corrosion of friction welded and post-weld heat-treated AA6061/SiC/graphite hybrid composites date: 2021 words: 4435 flesch: 55 summary: Sriram Vikas et al. studied the influence of post-weld heat treatment (PWHT) and pitting corrosion behaviour of dissimilar aluminium alloy friction stir welds. Corrosion behavior of alumina-aluminum and silicon carbide-aluminum metal-matrix composites. keywords: alloy; aluminium; composites; corrosion; friction; heat; joints; sta; weld cache: ap-6903.pdf plain text: ap-6903.txt item: #1265 of 1656 id: ap-692 author: Bečvář, M.; Štukjunger, P. title: Fixed-Point Arithmetic in FPGA date: 2005 words: 3264 flesch: 54 summary: This figure shows, and it is also valid in general, that serial mode multipliers consume considerably a smaller area than parallel mode multipliers. Fixed-point multipliers can be divided into two groups by the type by their operation: serial mode multipliers and par- allel mode multipliers. keywords: area; arithmetic; carry; mode; multipliers; point cache: ap-692.pdf plain text: ap-692.txt item: #1266 of 1656 id: ap-6922 author: Daniyan, Ilesanmi; Ale, Felix; Uchegbu, Ikenna Damian; Bello, Kazeem; Osazele, Momoh title: Process optimization and performance evaluation of a downdraft gasifier for energy generation from wood biomass date: 2021 words: 8794 flesch: 56 summary: [22] reported on the prediction of a high-temperature rapid combustion behaviour of wood biomass particles using a modelling and simulation approach. This work considers the process optimization and performance evaluation of a downdraft gasifier, suitable for energy generation using wood biomass. keywords: biomass; conversion; energy; gas; gasifier; optimization; particle; process; residence; size; temperature; time; wood; wood biomass; yield cache: ap-6922.pdf plain text: ap-6922.txt item: #1267 of 1656 id: ap-6930 author: Berka, Jan; Ballek, Jakub Vojtěch; Velebil, Ladislav; Purkarová, Eliška; Vagenknechtová, Alice; Hlinčík, Tomáš title: CO2 power cycle chemistry in the CV Řež experimental loop date: 2021 words: 3577 flesch: 49 summary: The development technology and applications of supercritical CO2 power cycle in nuclear energy, solar energy and other energy industries. Power cycles using carbon dioxide in a supercritical state (sc-CO2) can be used in both the nuclear and non-nuclear power industry. keywords: carbon; co2; cycle; dioxide; experimental; gas; impurities; loop; medium; power cache: ap-6930.pdf plain text: ap-6930.txt item: #1268 of 1656 id: ap-6935 author: Suk, Tomáš; Štroner, Martin title: The impact of the air temperature on measuring the zenith angle during the year in the ground layer of the atmosphere for the needs of engineering surveying date: 2021 words: 6248 flesch: 57 summary: Analysis of the accuracy of temperature measurement of the whole system From the above permitted deviations ∆TL and ∆TS , the standard deviations of the logger σL and the sen- sor σS can be calculated using the law of standard deviation transmission σS = ∆TS 2 = approx. Analysis of the accuracy of temperature measurement of the whole system 2.2 Experiment 2.2.1 Measurement results 2.2.2 Determination of temperature gradient 2.3 Calculations 2.4 Differential equation of the passage of a wave-path 2.4.1 Barrel-Sears formula 2.4.2 Iterative calculation of path 3 Results 3.1 Vertical shifts 4 Real beam trajectory 5 Discussion 6 Conclusion Acknowledgements References keywords: accuracy; angle; atmosphere; beam; data; day; geodetic; gradient; measurement; refraction; temperature; vertical; zenith cache: ap-6935.pdf plain text: ap-6935.txt item: #1269 of 1656 id: ap-6936 author: Hanon, Muammel M.; Taha, Ziad A.; Zsidai, László title: Simulation of laser drilling of Inconel X-750 and Ti-5Al-2.5Sn sheets using COMSOL date: 2021 words: 5616 flesch: 58 summary: Among these techniques, laser drilling has become the novel technique for meet- ing a vast majority of possible industrial requirements for micro-hole drilling [11]. 4/2021 Simulation of laser drilling of Inconel X-750 . . keywords: alloy; drilling; duration; hole; inconel; laser; peak; power; pulse; pulse duration; x-750 cache: ap-6936.pdf plain text: ap-6936.txt item: #1270 of 1656 id: ap-694 author: Tan, J. K. title: Elicitation of Preference Structure in Engineering Design date: 2005 words: 3152 flesch: 51 summary: The selection of the most preferred design solution(s) from a set of efficient design solutions is a subjective matter and depends on the decision maker’s preference. Multiple Criteria Decision Making addresses synthesis and analysis processes through multiple objective optimisation to generate sets of efficient design solutions (i.e. on Pareto surfaces) and multiple attribute decision making to analyse and select the most preferred design solution(s). keywords: criteria; decision; design; maker; preference; structure cache: ap-694.pdf plain text: ap-694.txt item: #1271 of 1656 id: ap-6953 author: Nafa, Fares; Boudouda, Aimad; Smaani, Billel title: ADAPTIVE WAVELETS SLIDING MODE CONTROL FOR A CLASS OF SECOND ORDER UNDERACTUATED MECHANICAL SYSTEMS date: 2021 words: 6651 flesch: 64 summary: Nowadays, wavelets theory was successfully applied to multi-scale analysis and synthesis, time-frequency signal analysis in signal processing as well as in nonlinear control system design [28]. In this work, an adaptive controller using sliding mode control (SMC) and wavelets network (WN) is proposed for a class of second-order UMS with two degrees of freedom (DOF). keywords: adaptive; approximation; control; controller; mode; nonlinear; smc; systems; ums; wavelets cache: ap-6953.pdf plain text: ap-6953.txt item: #1272 of 1656 id: ap-696 author: Crostack, H.-A.; Höfling, M.; Liangsiri, J. title: Simulation in Quality Management – An Approach to Improve Inspection Planning date: 2005 words: 4862 flesch: 57 summary: [1] developed a simulation model in order to evaluate inspection strategies according to process capability and cost of quality (COQ). Keywords: simulation, quality, inspection strategies, manufacturing process. keywords: cost; inspection; inspection strategies; process; product; quality; simulation; strategies; time cache: ap-696.pdf plain text: ap-696.txt item: #1273 of 1656 id: ap-6968 author: Rindt, Karin; Hrdlička, František; Novotný, Václav title: Preliminary prospects of a Carnot-battery based on a supercritical CO2 Brayton cycle date: 2021 words: 7330 flesch: 57 summary: As a part of the change towards a higher usage of renewable energy sources, which naturally deliver the energy intermittently, the need for energy storage systems is increasing. Keywords: Pumped thermal energy storage (PTES), Carnot-battery, power-to-heat-to-power (P2H2P), supercritical CO2 cycle, Brayton cycle, heat exchange, pinch-point analysis. keywords: co2; cold; cycle; discharging; efficiency; energy; figure; heat; power; storage; system; temperature; trip cache: ap-6968.pdf plain text: ap-6968.txt item: #1274 of 1656 id: ap-698 author: Ríos, J.; Jiménez, J. V.; Pérez, J.; Vizán, A.; Menéndez, J. L.; Más, F. title: KBE Application for the Design and Manufacture of HSM Fixtures date: 2005 words: 5680 flesch: 55 summary: This is the main reason why much research work focuses on specific issues of fixture design (locating and clamping lay- out, fixture force analysis, fixture tolerances analysis, etc.), and address a specific kind of fixtures, e. g., modular fixtures, or consider only parts with a specific kind of geometry, e. g., prismatic forms. Automating the design of fixtures As stated previously, automation of fixture design has been pursued for several years. keywords: application; design; development; fixture; icad; kbe; knowledge; machining; process; vacuum cache: ap-698.pdf plain text: ap-698.txt item: #1275 of 1656 id: ap-700 author: Song, H.; Eynard, B.; Lafon, P.; Roucoules, L. title: Towards Integration of CAx Systems and a Multiple-View Product Modeller in Mechanical Design date: 2005 words: 4142 flesch: 54 summary: Product modelling has been recognized as an effective tech- nique for facilitating the representation and management of product data. In such a situation, product modelling oriented to functional design has been widely studied. keywords: catia; data; design; integration; level; modeller; modelling; product; view; vol cache: ap-700.pdf plain text: ap-700.txt item: #1276 of 1656 id: ap-7011 author: Solnař, Stanislav; Medek, Jan; Suleiman, Abubakar Shola; Vyhlídal, Patrik title: On a static and dynamic calibration of thermochromic liquid crystals date: 2021 words: 5067 flesch: 53 summary: For TLC measurements, it is also very important to find out if there is only one colour in the image or if the evaluated image is composed of many different Hue values (colours). However, a very important part of accurate TLC measurements is also their calibration, which is necessary for each applied layer. keywords: calibration; colour; curve; experiment; layer; light; measurement; surface; temperature; tlc cache: ap-7011.pdf plain text: ap-7011.txt item: #1277 of 1656 id: ap-702 author: Mullineux, G.; Hicks, B.; Medland, T. title: Constraint-Aided Product Design date: 2005 words: 3836 flesch: 56 summary: Keywords: constraint modelling, design knowledge, synthesis, product design, product families. posed by resources. 3: Modelling a four bar/six bar straint-aided process for product design. keywords: approach; constraint; design; fig; knowledge; process; product; rules cache: ap-702.pdf plain text: ap-702.txt item: #1278 of 1656 id: ap-7020 author: Karpiuk, Irina; Danilenko , Denis; Karpiuk, Vasyl; Danilenko , Anna; Lyashenko, Tatiana title: Bearing capacity of damaged reinforced concrete beams strengthened with metal casing date: 2021 words: 9658 flesch: 52 summary: Keywords: Through normal and cross inclined cracks, reinforced concrete beam damaged by force cracks, prestressed metal casing, low-cycle alternating transverse load. It was experimentally established [7] that low-cycle transverse alternating and intermittent load of high levels does not only reduce the bearing capacity of pro- totypes (reinforced concrete beams) to 20 % and their crack resistance, but also significantly increases the width of the opening of normal cracks and, especially, oblique ones , the value of deflections up to 35 %, and also change the nature of their destruction in compar- ison with a one-time static loading of proportionally increasing load. keywords: action; alternating; beams; bearing; bearing capacity; capacity; concrete; cracks; elements; load; reinforcement; shear; strengthening; structures; transverse cache: ap-7020.pdf plain text: ap-7020.txt item: #1279 of 1656 id: ap-704 author: Humble, R.; Millward, H.; Mumby, A.; Price, R. title: The Design and Development of Enhanced Thermal Desorption Products date: 2005 words: 4466 flesch: 52 summary: Keywords: thermal desorption, product design, SME. and development techniques is reported in terms of deve- lopment times and project costs, and the wider implications for new product development within small companies are discussed. All the PDR-based KTP programmes are, or have been, fo- cused on product design, and the numbers reflect the UK trend in that the majority have been based in SMEs. keywords: cad; cold; company; design; desorption; development; ktp; process; product; temperature; trap cache: ap-704.pdf plain text: ap-704.txt item: #1280 of 1656 id: ap-7041 author: Karpiuk, Vasyl; Somina, Yuliia; Karpiuk, Fedir; Karpiuk, Irina title: Peculiar aspects of cracking in prestressed reinforced concrete T-beams date: 2021 words: 6129 flesch: 59 summary: The theoretical pre-condition of PC is based on the theory of experiment planning, the theory of mathematical 635 V. Karpiuk, Y. Somina, F. Karpiuk, I. Karpiuk Acta Polytechnica I – transfer of prestressing in reinforcement to concrete; II – formation of normal cracks in the zone of pure bending; III – growth of normal cracks and the formation of inclined cracks in shear spans; IV – development of normal and inclined cracks with an intersection of compressed beam flange and formation of new inclined cracks; V.A) – the beam destruction with the displacement of area near the support and with the reinforcement kink; V.B) – the beam destruction due to the prevailing action of the bending moment; V.C) – the beam destruction due to the crushing of the beam rib concrete Figure 3. By increasing the width ratio of the table overhangs to the thickness of the rib b / f /b from 2 to 4 and increasing the thickness ratio of the table overhangs to the working height h / f /h0 from 0.18 to 0.36, the opening width of normal cracks will increase by 14 %, and the opening width of inclined cracks will decrease by 21 and 23|,%. keywords: concrete; cracks; factors; reinforcement; shear; structures; table; value; width cache: ap-7041.pdf plain text: ap-7041.txt item: #1281 of 1656 id: ap-7051 author: Djendaoui, Dahmane; Benaissa, Amar; Rabhi, Boualaga; Zellouma, Laid title: Self tunning filter for three levels four legs shunt active power filter with fuzzy logic controller date: 2021 words: 4583 flesch: 65 summary: For this purpose, the three-level inverter is used in this paper as a three-phase four-leg shunt active power filter (SAPF). 7. DC capacitors voltages stabilization To achieve the balance of two input voltages, improve the performance of active power filters and avoid a potential drift of the neutral point (NP), a stabiliza- tion bridge system shown in Fig 8 is inserted. keywords: control; current; figure; filter; load; phase; power; voltage cache: ap-7051.pdf plain text: ap-7051.txt item: #1282 of 1656 id: ap-706 author: Tichánek, R.; Španiel, M.; Diviš, M. title: Structural Stress Analysis of an Engine Cylinder Head date: 2005 words: 2643 flesch: 56 summary: Keywords: structural stress analysis, FEM, internal-combustion engine. cylinder head assembly lies on the cylinder, and it is fixed with six pre-pressed bolt connections. 3 The dependency of the heat- -transfer coefficient on surface temperature is shown in Fig. keywords: cylinder; fig; head; heat; transfer; valve cache: ap-706.pdf plain text: ap-706.txt item: #1283 of 1656 id: ap-7070 author: Awang, Fatin Farhana; Hassan, Mohd Faiz; Kamarudin, Khadijah Hilmun title: Corn starch doped with sodium iodate as solid polymer electrolytes for energy storage applications date: 2021 words: 4268 flesch: 59 summary: Cole-Cole plots for (a) 0 wt. % of NaIO3 and (b) 9 wt. % of NaIO3 SPE films. The effect of dopants on the structure, morphology and electrical properties of SPE films was analysed using X-Ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS) analysis. keywords: conductivity; electrolyte; figure; films; naio3; polymer; sodium; spe; starch; wt.% cache: ap-7070.pdf plain text: ap-7070.txt item: #1284 of 1656 id: ap-708 author: Hoehn, B.-R.; Steingroever, K.; Jaros, M. title: Modelling a New Product Model on the Basis of an Existing STEP Application Protocol date: 2005 words: 4298 flesch: 59 summary: 4.2 Standardized specification for the product model for gear units The main problem in using STEP AP 214 for gear data is the lack of any standardization. Therefore the product model for gear units developed by FZG contains clear definitions how to use AP 214 for defining gear data. keywords: application; data; gear; model; product; step; units cache: ap-708.pdf plain text: ap-708.txt item: #1285 of 1656 id: ap-7080 author: Zarei, Najmeh; Anvar, Seyed Ahmad; Goenezen, Sevan title: Subjective approach to optimal cross-sectional design of biodegradable magnesium alloy stent undergoing heterogeneous corrosion date: 2021 words: 5774 flesch: 57 summary: Introduction Recently, using magnesium alloy stents in clinical treatments has become relatively common owing to their biosafety, biocompatibility, superior mechani- cal properties, and comparatively larger stiffness than other metallic and polymeric biodegradable stents. To find the optimum profile design of the stent subjectively (without using optimization codes and with much less computational costs), radial recoil was limited to 27 % (corresponding to about 10 % probability of in-stent diameter stenosis after an almost complete degradation) and the stent with the highest radial stiffness was selected. keywords: corrosion; design; element; magnesium; model; recoil; stent; stiffness; time cache: ap-7080.pdf plain text: ap-7080.txt item: #1286 of 1656 id: ap-7081 author: Sobczyk, Kamil; Kruszka, Leopold; Chmielewski, Ryszard; Rekucki, Ryszard title: Performance characteristics of Hopkinson’s set-up pneumatic launcher date: 2021 words: 4073 flesch: 57 summary: The small-diameter pneumatic launcher is an im- portant element of the stationary test stand called the split Hopkinson pressure bar SHPB Testing of hybrid nickel-polyurethane foams at high strain-rates using Hopkinson bar and digital image correlation. keywords: bar; figure; hopkinson; impact; launcher; pressure; projectile; sample; strain cache: ap-7081.pdf plain text: ap-7081.txt item: #1287 of 1656 id: ap-7082 author: Parkhats, Vadzim; Krzywoń, Rafał; Hulimka, Jacek; Kubica, Jan title: Determination of bond model for 7-wire strands in pretensioned concrete beam date: 2021 words: 4318 flesch: 64 summary: Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague DETERMINATION OF BOND MODEL FOR 7-WIRE STRANDS IN PRETENSIONED CONCRETE BEAM Vadzim Parkhats∗, Rafał Krzywoń, Jacek Hulimka, Jan Kubica Silesian University of Technology, Faculty of Civil Engineering, Department of Structural Engineering, Akademicka 5, 44-100 Gliwice, Poland ∗ corresponding author: vadzpar036@student.polsl.pl Abstract. Bond models found in the literature are applied in finite element modelling of the beam used in the experimental test to establish the most appropriate ones. keywords: beam; bond; concrete; element; finite; model; strands cache: ap-7082.pdf plain text: ap-7082.txt item: #1288 of 1656 id: ap-7088 author: Bodnár, Tomáš; Dvořák, Rudolf title: FOREWORD date: 2021 words: 1457 flesch: 43 summary: Professor Karel Kozel devoted himself to applied mathematics throughout his life and became probably the most authentic successor of the school, that was founded at CTU by Professor Polášek, whose goal and purpose was the direct use of mathematics in solving specific problems of technical practice. In 1964 he moved to the Department of Mathematics, Faculty of Mechanical Engineering at the Czech Technical University in Prague as an assistant professor. keywords: czech; faculty; technical; university cache: ap-7088.pdf plain text: ap-7088.txt item: #1289 of 1656 id: ap-7089 author: Bodnár, Tomáš; Dvořák, Rudolf title: PŘEDMLUVA date: 2021 words: 1148 flesch: 66 summary: ledna 2021 dlouholetý profesor ČVUT v Praze a vědecký pracovník ÚT AVČR Profesor Karel Kozel je významný český matematik a pedagog, který se po celý svůj život věnoval aplikované a zvláště numerické matematice. Byl dlouholetým členem a později i vedoucím Ústavu technické matematiky na Fakultě strojní ČVUT v Praze. keywords: jeho; kozel; matematiky; pak; profesor; ústavu; čvut cache: ap-7089.pdf plain text: ap-7089.txt item: #1290 of 1656 id: ap-7096 author: Trzepieciński, Tomasz; Szpunar, Marcin title: Assessment of the effectiveness of lubrication of Ti-6Al-4V titanium alloy sheets using radial basis function neural networks date: 2021 words: 4538 flesch: 55 summary: Kinematic viscosity ηk = 0 was assumed for dry friction conditions. Effect of nominal pressure on the variation in the functional volume parameters Vmc, Vvc, Vmp and Vvv under dry friction conditions. bricated conditions causes an unfavourable reduction in the volume of the oil pockets (Fig. 4e). keywords: coefficient; conditions; friction; metal; network; oil; pressure; rbf; sheet; surface; titanium; value cache: ap-7096.pdf plain text: ap-7096.txt item: #1291 of 1656 id: ap-710 author: Valášek, M.; Bauma, V.; Šika, Z. title: Study of Concepts of Parallel Kinematics Machines for Advanced Manufacturing date: 2005 words: 1982 flesch: 58 summary: If the platform is just a fraction of the frame cube (e.g. 1:5), then the ratio between the workspace and the machine space is much better than for other parallel kinematics concepts. 3 Hybrid parallel kinematics machines In hybrid parallel kinematics machines, the DOFs of the machine are split into two parts, at least one of which is real- ized by the parallel kinematics concept. keywords: concept; fig; kinematics; parallel cache: ap-710.pdf plain text: ap-710.txt item: #1292 of 1656 id: ap-7108 author: Fomin, Oleksij; Glib, Vatulia; Alyona, Lovska title: Determination of loads on the body of a boxcar with elastic elements in the center sill date: 2022 words: 3730 flesch: 63 summary: Body of a boxcar with elastic elements in the centre sill. The authors suggest elastic elements in the body of a centre sill being the basic carrying element of the frame to decrease the dynamic loads. keywords: body; boxcar; centre; elements; figure; loads; sill; strength cache: ap-7108.pdf plain text: ap-7108.txt item: #1293 of 1656 id: ap-712 author: Alkin, C.; Imrak, C. E.; Kocabas, H. title: Solid Modeling and Finite Element Analysis of an Overhead Crane Bridge date: 2005 words: 3881 flesch: 67 summary: . Hoisting Velocity : VH � 2.7 m/min Total duration of use : U4 Load spectrum class : Q3 Appliance group : A5 Loading type : H (main load) Dynamic coefficient : � � 1.15 Amplifying coefficient : �c � 1.11 Table 1: Bridge property values dynamic coefficient, and the two most unfavourable horizon- tal effects, excluding the buffer forces. In this study, the calculations apply the F. E. M. rules and DIN standards, which are used for box girder crane bridges. keywords: bridge; crane; element; finite; girder; node; overhead; stress; vol; � � cache: ap-712.pdf plain text: ap-712.txt item: #1294 of 1656 id: ap-7139 author: Sliusenko, Andrii; Ponomarenko, Vitalii; Forostiuk, Inna title: Water-air ejector with conical-cylindrical mixing chamber date: 2021 words: 5585 flesch: 51 summary: Liquid jet gas ejectors: designs of motive nozzles, performance efficiency. Study of a gas–liquid ejector and its application to a solar-powered bi-ejector refrigeration system. keywords: apparatus; chamber; ejector; entrainment; flow; gas; jet; jet apparatus; liquid; mixing; nozzle; ratio cache: ap-7139.pdf plain text: ap-7139.txt item: #1295 of 1656 id: ap-714 author: Bicak, M. M. A.; Belek, H. T.; Göksenli, A. title: Vibration Damping of a New Ionic Liquid under Electric Field Effect date: 2005 words: 2377 flesch: 55 summary: � � � �5265 19195 T , where � denotes viscosity in terms of cP, and T is tempera- ture (K). 3 Ionic liquids are salts which are fluids at around room tem- perature. keywords: conductivity; effect; field; fluids; liquid; temperature cache: ap-714.pdf plain text: ap-714.txt item: #1296 of 1656 id: ap-7150 author: Erturk, Ercan title: Stationary solutions of incompressible viscous flow in a wall-driven semi-circular cavity date: 2021 words: 6014 flesch: 68 summary: Keywords: Driven semi-circular cavity flow, large Reynolds number flow, numerical solutions, 2-D incompressible viscous flow. Streamline contours of semi-circular cavity flow as Reynolds number increases. keywords: cavity; cavity flow; et al; figure; flow; number; numerical; reynolds; wall cache: ap-7150.pdf plain text: ap-7150.txt item: #1297 of 1656 id: ap-716 author: Novotný, J.; Nožička, J.; Adamec, J.; Nováková, L. title: Measurement of Two Phase Flow date: 2005 words: 1787 flesch: 62 summary: Np fr� � trough the following equation: � � � � � � � � � � � � � � � � � � � � arcsin cos sin d z m m a 2 2 2 1 22 m � � � � � � � � � � � � cos � 2 . After exhaustion of both chambers and fixation of both pressures, stopcock C is opened and the saturated steam flows through the overheater into the measurement area with lower pressure steam. keywords: measurement; particle; size; steam; � � cache: ap-716.pdf plain text: ap-716.txt item: #1298 of 1656 id: ap-718 author: Coiro, D. P.; Marco, A. De; Nicolosi, F.; Melone, S.; Montella, F. title: Dynamic Behaviour of the Patented Kobold Tidal Current Turbine: Numerical and Experimental Aspects date: 2005 words: 4493 flesch: 61 summary: For one blade and for the upwind actuator disk a a sen V V Cu u u Ru lu u zvu u( ) ( , ,Retan1 1 8 2 � � � � � �� � � � �� � ) ( ) ( , ,Re ) cos( ) tan tan tan � � � � � sen C C � � � � � � u u du u zvu u u u mc u zvu u nu u zvu u c cer 4 4 ( , ,Re ) ( , ,Re ) ( ) tan tan� � � �� � � C x x � � � � � � cos ( , ,Re ) ( ) tan � � � � zvu tu u zvu u c cer zvu C x x sen4 0 (5) For the downwind actuator disk ( )( ) ( ,tan 1 2 1 8 2 � � � � � � � a a a sen V V C d d u d Rd ld d z � � � � �� vd d d d dd d zvd d d ,Re ) ( ) ( , ,Re ) cos( tan tan� � � � � sen C� � � � � � �tan tan tan ) ( , ,Re ) ( , ,Re ) ( d mc d i i N �� � � � � C b 1 (10) I M I M I P zv1 h1 P zv h2 P zv (�� ��) (�� ��) (�� ��) � � � � � � � � 2 3 � � � M I M h3 P zvn hn � (�� ��)� (11) 3 Airfoils and aerodynamic characteristics The rotor performances were tested using five airfoils: three symmetrical airfoils NACA 0012, 0015, 0018 and two cambered airfoils NACA 4415 and HLIFT18. keywords: blade; data; fig; model; pitch; tan �; turbine; � � cache: ap-718.pdf plain text: ap-718.txt item: #1299 of 1656 id: ap-7190 author: Hevko, Roman; Zalutskyi, Sergii; Tkachenko, Ihor; Lyashuk, Oleg; Trokhaniak, Oleksandra title: Design development and study of an elastic sectional screw operating tool date: 2021 words: 4876 flesch: 56 summary: The works of [10, 11] are dedicated to the develop- ment of screw operating tools with an elastic surface and their theoretical and experimental research. Design scheme (A) and general view (B) of screw operating tool with overlapping elastic sections. (a). keywords: conveyor; elastic; figure; grain; material; operating; screw; tool; transportation cache: ap-7190.pdf plain text: ap-7190.txt item: #1300 of 1656 id: ap-720 author: Fošumpaur, P.; Čihák, F. title: Design and Optimization of a Turbine Intake Structure date: 2005 words: 2625 flesch: 64 summary: i i� � � � � 1 2 (1) and the continuity equation � �u 0 (2) where ui is the velocity vector component in the direction of the xi axis, � density �m3�s�1], p hydrostatic pressure � �u 2 2 � � �C k2 (5) The k-� model contains the following constants, whose values are based on hydraulic model research: The above-specified equations for 2-D turbulent flow were approximated by the Finite Element Method in the FEMLAB computing environment. keywords: k �; pier; plant; scenario; � u; � � cache: ap-720.pdf plain text: ap-720.txt item: #1301 of 1656 id: ap-7211 author: Franek, Ondřej; Jarský, Čeněk title: On reducing CO2 concentration in buildings by using plants date: 2021 words: 4704 flesch: 50 summary: Keywords: Carbon dioxide, climate change, indoor greening, indoor air quality, building ventilation. Can houseplants improve indoor air quality by removing CO2 and increasing relative humidity? keywords: air; co2; co2 concentration; concentration; environment; plants; ppm; supply cache: ap-7211.pdf plain text: ap-7211.txt item: #1302 of 1656 id: ap-722 author: Macdonald, M.; Rhodes, J. title: Finite Element Modelling of Cold Formed Stainless Steel Columns date: 2005 words: 3782 flesch: 57 summary: � � � � � � � � � � E K E n , (1) where � � unit strain � � unit stress (N/mm2) E � modulus of elasticity (N/mm2) K and n are constants for a given curve, which are evaluated through two secant yield strength values for slopes of 0.7 E and 0.85 E. Equation (1) was modified by Hill 5.2 Compression tests In the experimental investigation a series of compression tests to failure were made on stainless steel columns of the lipped channel cross-section as described above. keywords: columns; material; section; steel; strain; stress; � � cache: ap-722.pdf plain text: ap-722.txt item: #1303 of 1656 id: ap-724 author: Holický, M. title: Fuzzy Optimisation of Structural Performance date: 2005 words: 4775 flesch: 49 summary: It is assumed that the objective function is given by the total cost C(� ) expressed approximately as a sum C C CD( ) ( ) ( )� � � �� �0 , (3) where C0(� ) is given as the sum of the construction and maintenance cost, �(�)CD is the expected malfunction cost; here CD denotes the cost of full damage (full malfunction or serviceability failure) and � denotes the decision parameter (for example the mass per unit length or the cross section area). Note that for the standard deviation �S � 0.2 r1 the op- timum mean �S is in both cases considerably lower (from 0.8 r1 to 0.95 r1). keywords: cost; fig; performance; probability; � r; � � cache: ap-724.pdf plain text: ap-724.txt item: #1304 of 1656 id: ap-7241 author: Vokál, Marek; Drahorád, Michal title: Load carrying capacity of masonry arch railway bridges at the serviceability limit state date: 2022 words: 6168 flesch: 67 summary: no. 2/2022 Load carrying capacity of masonry arch bridges at the SLS Δ Figure 1. no. 2/2022 Load carrying capacity of masonry arch bridges at the SLS 0 20 40 60 80 100 120 NelMat -0.15 -0.1 -0.05 0 0.05 0.1 0.15 e T h 4 F it eTh4Fit vs. NelMat fitted Figure 8. keywords: analysis; arch; bridges; calculation; figure; linear; load; masonry; model; non cache: ap-7241.pdf plain text: ap-7241.txt item: #1305 of 1656 id: ap-726 author: Zítek, P.; Vyhlídal, T. title: Model Based Control of Moisture Sorption in a Historical Interior date: 2005 words: 5205 flesch: 47 summary: If x is the absolute humidity in kg of water per one kg of dry air, its value, corresponding to a certain given � and T, results, e.g., from the Magnus relationship (Camuffo, 1998), as follows x aT b T� � � �3795 10 103. ( )� , (4) where a � 7.5 and the additive temperature constant b � 237.3 °C. If a considerable change in relative humidity from �0 to � has occurred under x = const., the corresponding temperature change is relatively small, given as follows T T b T a0 0 0� � � �(log log )� � , (6) where, unlike (3), the decimal logarithm is used. keywords: air; control; humidity; model; moisture; t �; temperature; � � cache: ap-726.pdf plain text: ap-726.txt item: #1306 of 1656 id: ap-7273 author: Dittrich, Jaroslav title: Measurement of a quantum particle position at two distant locations: a model date: 2022 words: 3528 flesch: 67 summary: In the matrix notation C(t, r) = ( c00(t, r) c01(t, r) c10(t, r) c11(t, r) ) , E = ( E0 0 0 E1 ) , (11) F (r) = ( f00(r +R) f01(r +R) f10(r +R) f11(r +R) ) , (12) G(r) Denoting r ∈ R the coordinate of the measured light particle (mass m), x ∈ R the coordinate of the heavy particle in the left detector (mass M) and y ∈ R that in the right detector (mass M), the free Hamiltonian (without an interaction of the measured particle and detectors) reads H0 = − ℏ2 2m∂2 r − ℏ2 2M ∂2 x + V (x+R) − ℏ2 2M ∂2 y + V (y −R) , (2) understood as a self-adjoint operator in the state space L2(R3) with the domain H2(R3). keywords: detection; detectors; measurement; particle; quantum cache: ap-7273.pdf plain text: ap-7273.txt item: #1307 of 1656 id: ap-728 author: Telfer, D.; Spencer, J. title: Properties and Performance of a New Compact HF Aerial Design for Multi-Band Operation date: 2005 words: 3314 flesch: 56 summary: In practice, matching may be achieved using an ATU, e.g., at the transmitter end, but it is 14 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 45 No. 4/2005 Czech Technical University in Prague a) b) c) d) e) f) Fig. 5: a) FF pattern at fd for DM aerial of Fig. 10: a) SWR plot, 7 to 7.1 MHz for DM aerial of Fig. 3, Zi � 50 ohms at 7.05 MHz; b) SWR spectrum, 5 MHz to 30 MHz for the DM aerial of Fig. 3, for Zi � 50 ohms at 7.05 MHz; c) predicted SWR spectrum, range 5 MHz to 30 MHz, of the BFDM aerial in Fig. keywords: aerial; fig; mhz; nvis; pattern cache: ap-728.pdf plain text: ap-728.txt item: #1308 of 1656 id: ap-7289 author: Robert, Ubong Williams; Etuk, Sunday Edet; Agbasi, Okechukwu Ebuka; Umoren, Grace Peter; Akpan, Samuel Sunday; Nnanna, Lebe Agwu title: Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes date: 2021 words: 8833 flesch: 59 summary: Particulars Materials Clay soil HCWPAN Cement Used form Dry Dry/powdery Dry/powdery Static angle of repose (29.4 ± 0.1)° (41.4 ± 0.3)° (39.8 ± 0.1)° Acta Polytechnica Chemical constituents Proportion (% wt) per material used Name Formula Clay soil HCWPAN Cement (PLC) keywords: ash; building; cement; clay; clay soil; content; energy; hcwpan; journal; materials; paper; properties; samples; soil; strength; waste; water; ± ± cache: ap-7289.pdf plain text: ap-7289.txt item: #1309 of 1656 id: ap-7291 author: Agárdi, Anita; Kovács, László; Bányai, Tamás title: Comparision of the walk techniques for fitness state space analysis in vehicle routing problem date: 2021 words: 7146 flesch: 56 summary: The Timetabling Problem landscape is determined by the following techniques: fitness distance correla- tion, autocorrelation The relationship between fitness values and average of fitness distances to other solutions in the case of 2-opt operator Figure 9. keywords: average; crossover; fitness; fitness distances; fitness values; hamming; hamming distances; problem; sequence distances; solution; swap sequence; walk cache: ap-7291.pdf plain text: ap-7291.txt item: #1310 of 1656 id: ap-7295 author: Antošová, Naďa; Šťastný, Patrik; Petro, Marek; Krištofič, Štefan title: Application of additional insulation to ETICS on surfaces with biocorrosion date: 2021 words: 5115 flesch: 47 summary: An effective solu- tion for eliminating microorganisms on the surface of insulation systems can be a new radical technology combined with the repair of existing ETICS construc- tion, i. e., the technology of DOUBLE ETICS. The aim was to investigate the possibility of applying double insulation onto the original ETICS, after recording the existing condi- tions in the layers of DOUBLE ETICS which could have an impact on the survival and development of biocorrosion on the original facade. keywords: etics; experiment; gap; humidity; insulation; layer; microorganisms; results; samples; surface; temperature cache: ap-7295.pdf plain text: ap-7295.txt item: #1311 of 1656 id: ap-730 author: Mitchell, A. J.; McGookin, E. W.; Murray-Smith, D. J. title: Implementation of Sliding Mode Observer Based Reconfiguration in an Autonomous Underwater Vehicle date: 2005 words: 4426 flesch: 66 summary: � �� � ( ) ( ) ( ) (� � � � � � � � � � � � �� � � � � � � � M C D J M g1 10 0 � �) ( ) 0 0 � � � � � � � � � M B u 1 (1) where � �� � u v w p q r T, � �� � X Y Z � � � T, � �u � � �r s n T, B(�) is the nonlinear input matrix, C(�) is the matrix of Coriolis and Centripetal terms, D(�) is the damping matrix, g(�) is the vector of gravitational and buoyancy forces and moments, J(�) is the Euler transformation matrix, and M is the mass and inertia matrix. � � � �r c� , (7) � �M C D g B u� ( )� � � � �� � �( ) ( )r r r+ , (8) � ( )� � �� J . keywords: auv; control; fig; heading; reconfiguration; sensor; system; � c; � � cache: ap-730.pdf plain text: ap-730.txt item: #1312 of 1656 id: ap-732 author: Walker, J. A.; Cossar, C.; Miller, T. J. E. title: Simulation and Analysis of Magnetisation Characteristics of Interior Permanent Magnet Motors date: 2005 words: 4242 flesch: 54 summary: Keywords: permanent magnet, finite element method, flux-linkage measurement, rotor bridges. Test motor 2 has been modelled with the original rotor design (rotor bridges are the same material as the rotor bars), with the bridges at half the © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 29 Czech Technical University in Prague Acta Polytechnica Vol. 45 No. keywords: axis; bridges; current; flux; linkage; rotor; test cache: ap-732.pdf plain text: ap-732.txt item: #1313 of 1656 id: ap-7335 author: Adeshara, Jatinkumar V.; Patel, Hardik P.; Deheri, Gunamani B.; Patel, Rakesh M. title: Performance of a hydromagnetic squeeze film on a rough circular step bearing: a comparision of different porous structures date: 2022 words: 3590 flesch: 63 summary: Hydromagnetic squeeze film in rough truncated conical plates, using the Kozeny-Carman-model-based spongy structure, was discussed by Adeshara et al. In this article, it has been sought to study and analyse the performance of hydromagnetic squeeze film on a rough circular step bearing with inclusion of two different porous structures: Kozeny-Carman and Irmay’s model. keywords: figure; film; load; model; squeeze cache: ap-7335.pdf plain text: ap-7335.txt item: #1314 of 1656 id: ap-734 author: Bíla, J.; Tlapák, M. title: Ontologies and Formation Spaces for Conceptual ReDesign of Systems date: 2005 words: 3775 flesch: 48 summary: One possible functional structure is described by the following expression x: x � FAct(PNEU�Princ1(Trans�Princ2(ChCarr AND ChValV AND Transms AND ChBeh) AND Contr�Princ2(Analog) AND Cnstr�Princ2(Shape) AND ME�Princ1(Agg�Princ2(Accum) AND Trans�Princ2(ChCarrV AND ChBeh) AND Contr�Princ2(Analog) AND R-Eff�Princ2(Bearing) AND Cnstr�Princ2(Separ AND Fix AND Shape) ) The field which promises the necessary improvements in modelling the semantics is the field of ontologies. keywords: conceptual; design; knowledge; language; ontologies; ontology; pneu; principles; state; systems cache: ap-734.pdf plain text: ap-734.txt item: #1315 of 1656 id: ap-7340 author: Rostova, Hanna; Voyevodin, Victor; Vasilenko, Ruslan; Kolodiy, Igor; Kovalenko, Vladimir; Marinin, Vladimir; Zuyok, Valeriy; Kuprin, Alexander title: Cavitation wear of Eurofer 97, Cr18Ni10Ti and 42HNM alloys date: 2021 words: 3192 flesch: 54 summary: Keywords: Cavitation erosion, wear, steel, hardness, structure, resistance. Cavitation erosion can carry away an amount of metal no lesser than corrosion; hence, the importance of studies on cavitation resistance, which will reduce metal losses and increase the durability and reliability of parts and devices, is obvious. keywords: 42hnm; alloy; cavitation; cr18ni10ti; erosion; eurofer; materials; resistance; samples; steel; wear cache: ap-7340.pdf plain text: ap-7340.txt item: #1316 of 1656 id: ap-7341 author: Marín Velásquez, Tomás Darío; Arriojas Tocuyo, Dany Day Josefina title: Analysis of factors affecting the efficiency of Jatropha curcas oil as an asphaltene stabiliser date: 2022 words: 6255 flesch: 56 summary: The efficiency of J. curcas oil and the influence of the type of crude oil on the results obtained were demonstrated. However, the de- tailed molecular composition of asphaltenes remains unknown in many cases, which is because crude oil is made up of millions of different organic molecules and asphaltenes are the most complex of all [4]. keywords: aii; asphaltene; crude; curcas; curcas oil; dose; efficiency; heating; oil; results; sample; temperature cache: ap-7341.pdf plain text: ap-7341.txt item: #1317 of 1656 id: ap-7346 author: Assaad, Joseph J.; Mata, Matthew; Saade, Jad title: Effect of pigments on bond strength between coloured concrete and steel reinforcement date: 2022 words: 7463 flesch: 62 summary: [% of cement] Slump [mm] Air content [%] Density [kg/m]3 L a b ∆(E) 350-Control 2.6 205 2.8 2320 67.8 5.6 19.3 – 350-Red-1.5 % 2.6 205 n/a 2315 55.2 12.8 12.9 15.8 350-Red-3 % 2.9 200 2.7 2330 51.9 16.1 10.6 21.0 350-Red-4.5 % 3.2 200 2.9 2375 44.4 19.8 12 28.3 350-Grey-1.5 % 2.7 195 n/a 2330 61.9 2.2 12.4 9.6 350-Grey-3 % 2.9 205 3.1 2360 58.4 0.8 7.2 16.0 350-Grey-4.5 % 3.1 205 n/a 2350 49.4 -0.1 4.0 24.6 350-TiO2-1.5 % 2.7 210 n/a 2310 72.0 5.3 19.8 4.3 350-TiO2-3 % 3.0 210 3 2340 71.9 5.4 19.7 4.2 350-TiO2-4.5 % 3.1 195 2.9 2380 76.3 4.4 17.9 8.7 350-CBlack-1.5 % 2.9 190 n/a 2350 42.4 -0.2 -0.2 32.5 350-CBlack-3 % 3.5 195 3.2 2340 42.2 -0.5 -0.7 33.0 350-CBlack-4.5 % 3.6 205 3.4 2390 31.0 -0.05 -1.2 42.4 450-Control 2.4 205 3 2345 68.3 5.7 19.1 – 450-Red-3 % 2.5 210 3.1 2385 48.8 19.0 10.8 25.0 450-Grey-3 % 2.8 200 3 2385 56.2 0.58 6.9 17.9 450-TiO2-3 % 2.7 200 2.8 2405 77.1 5.1 19.1 8.9 450-CBlack-3 % 3.2 205 3.5 2415 41.9 -0.4 -0.8 33.6 The mix codification refers to cement content-Pigment type-Pigment dosage. To the other end, the magenta chromatic intense (i.e., a-value) varied from 5.55 to 16.1 for the 350-Control and 350-Red-3 % mixtures, respectively, while in contrast, the highest b-value of 19.75 corresponded to the 350-TiO2-1.5 % mix. keywords: bond; cement; concrete; effect; figure; mixtures; pigments; properties; steel; strength; tio2 cache: ap-7346.pdf plain text: ap-7346.txt item: #1318 of 1656 id: ap-7354 author: Haouam, Ilyas title: Dirac oscillator in dynamical noncommutative space date: 2021 words: 7090 flesch: 67 summary: = E (0) − + E (0) + 2 ± √√√√(E(0) − − E (0) + )2 4 + λ2 |W12|2. Supposing that λ |W12| is small as compared to relevant energy scale, so that the difference of the energy eigenvalues of the unperturbed system equals λ |W12| < ∣∣∣E(0) − − E (0) + ∣∣∣ . keywords: dirac; energy; oscillator; space cache: ap-7354.pdf plain text: ap-7354.txt item: #1319 of 1656 id: ap-736 author: Peebles, C.; Bil, C.; Drack, L. title: Intelligent Data Storage and Retrieval for Design Optimisation – an Overview date: 2005 words: 14992 flesch: 53 summary: 5 Compression of design space data With the increasing complexity of design data, and the more widespread use of complex data types such as volumet- ric, spatial and high-resolution imaging, data compression is becoming very important for adequate storage of large volumes of data. Such a system would be capable of efficiently storing (and compressing if required) a range of types of design data into an intelligent database. keywords: acm; algorithms; applications; compression; computer; czech; data; database; design; engineering; knowledge; methods; models; object; optimisation; query; search; space; system; technical; university; usa; use; vol cache: ap-736.pdf plain text: ap-736.txt item: #1320 of 1656 id: ap-738 author: Crosbie, R. E.; Hingorani, N. G. title: High-Speed Real-Time Simulators for Engineering Design date: 2005 words: 3590 flesch: 49 summary: RTDS Technologies (Ref [4]) specialize in providing simulation systems customized to specific, large-scale power system simulations. Simulation of a very rapid phenome- non, such as the operation of electronic switches, will execute more slowly than real time to allow observation of the changes taking place. keywords: design; frame; hsrt; power; processors; simulation; system; time cache: ap-738.pdf plain text: ap-738.txt item: #1321 of 1656 id: ap-740 author: Ericsen, T. S. title: Physics Based Design, the Future of Modeling and Simulation date: 2005 words: 5272 flesch: 51 summary: The future system design process It is time for system design, particularly Naval Ship de- sign, to evolve. The idea of open plug-and-play architecture is to build power systems in much the same way as personal computers. keywords: blocks; building; design; model; pebb; physics; power; requirement; simulation; system cache: ap-740.pdf plain text: ap-740.txt item: #1322 of 1656 id: ap-742 author: Hrouzek, M. title: Feedback Control in an Atomic Force Microscope Used as a Nano-Manipulator date: 2005 words: 2398 flesch: 53 summary: In the tapping mode, the tip is touches the surface in each period of cantilever movement at its maximum deflection to- © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 65 Czech Technical University in Prague Acta Polytechnica Vol. 45 No. 4/2005 Feedback Control in an Atomic Force Microscope Used as a Nano-Manipulator M. Hrouzek This paper offers a concise survey of the most commonly used feedback loops for atomic force microscopes. 6 shows control loops affecting the sensitivity of the AFM. keywords: afm; cantilever; control; fig; force; noise cache: ap-742.pdf plain text: ap-742.txt item: #1323 of 1656 id: ap-744 author: Coiro, D. P.; Marco, A. de; Nicolosi, F.; Genito, N.; Figliolia, S. title: Design of a Low-Cost Easy-to-Fly STOL Ultralight Aircraft in Composite Material date: 2005 words: 3262 flesch: 67 summary: 2: Take off ground run STOG versus take off parameter TOP chosen, based on the criteria for keeping the wing area as small as possible (mainly for cost reasons) and using ap- propriate values of maximum take off and landing lift coef- ficient ((W/S)TO � 324 N/m2, S � 13.6 m2, CLmaxTO � 2.45, CLmaxL � 3.12). Altitude. �, �0 Density, density at sea level. keywords: aircraft; fig; maximum; � � cache: ap-744.pdf plain text: ap-744.txt item: #1324 of 1656 id: ap-7440 author: Agustina, Tuty Emilia; Gayatri, Rianyza; Bahrin, David; Moeksin, Rosdiana; Gustini title: ZnO-Zeolite nanocomposite application for photocatalytic degradation of procion red and its adsorption isotherm date: 2022 words: 5849 flesch: 54 summary: In this paper, the photocatalytic degradation of procion red dye, one of the most frequently used dyes in the textile industry, was studied. The objective of the research is to study the ZnO-Zeolite nanocomposite application to degrade procion red dye by using different irradiation sources. keywords: adsorption; degradation; dye; isotherm; light; nanocomposite; process; procion; red; sunlight; zeolite; zeolite nanocomposite; zno cache: ap-7440.pdf plain text: ap-7440.txt item: #1325 of 1656 id: ap-746 author: Avanzini, G.; D’Angelo, S.; Matteis, G. de title: Design and Development of the Engine Unit for a Twin-Rotor Unmanned Aerial Vehicle date: 2005 words: 4915 flesch: 47 summary: 5 Control system rapid prototyping After the realization of the rotor assembly and of the three-engine unit, which were separately ground tested, as reported in [4], ground testing of the whole engine/rotor sys- tem, coupled with the on-board computer for engine and rotor rpm control, will offer the first test benchmark for the control system software. As for the last point, details will be given on the control system for engine rpm control currently being tested on the vehicle prototype. keywords: configuration; control; czech; design; engine; flight; model; rotor; system; technical; university; vehicle cache: ap-746.pdf plain text: ap-746.txt item: #1326 of 1656 id: ap-748 author: McGeoch, D. J.; McGookin, E. W.; Houston, S. S. title: Sliding Mode Implementation of an Attitude Command Flight Control System for a Helicopter in Hover date: 2005 words: 5416 flesch: 64 summary: The switching term drives the systems when subjected to dis- turbance or commands, defined by the sliding surface, �, which is represented as [16, 17] �( ) ( )� �� � � � � � �x h x h x xT T cmd , ( This defines a state space system given by: x Ax Bu� � (1) � �x T� u v w p q r � � � , (2) � �u T� � � � �� 1 1 0s c tr , (3) where, A is the system derivative matrix, B is the control deriv- ative matrix, u (surge), v (sway) and w (heave) are the veloci- ties in the body referenced x, y, and z axes respectively, with the rotational velocities p (roll rate), q (pitch rate), and r (yaw rate), and attitudes � (roll), � (pitch) and � (yaw) about those axes. keywords: attitude; control; controller; dynamics; fig; pitch; response; roll; system; yaw; � � cache: ap-748.pdf plain text: ap-748.txt item: #1327 of 1656 id: ap-7491 author: Boudouda, Aimad; Boudjerda, Nasserdine; Nafa, Fares title: Analysis of output voltage ripple for dual randomized PWM buck converter operating in continuous and discontinuous conduction modes date: 2022 words: 4972 flesch: 65 summary: The RPPM and RCFM schemes give the lowest voltage ripple in DCM and CCM, respectively, which further decreases as the duty cycle “d” increases. RPPM scheme. keywords: ccm; current; dcm; output; psd; rcfm; rppm; scheme; voltage cache: ap-7491.pdf plain text: ap-7491.txt item: #1328 of 1656 id: ap-750 author: Zanic, V.; Prebeg, P. title: Primary Response Assessment Method for Concept Design of Monotonous Thin-Walled Structures date: 2005 words: 5836 flesch: 65 summary: The shear stress distribution can be calculated more ac- curately along the element (similar to the bending case) from the known element average stress �xs ke( )2 , the direction of shear stress flow, local element contribution �2( )s and its average �2 ke using expression � � � �xs e xs ke kes s ( ) ( ) ( ) ( ) 2 2 2 2� � � . If necessary, it is possible to calculate shear stress distribution �xs e s( ) more accurately, from the mean stress �xs ke obtained from FEM, and the contribution to each element calculated analyt- ically � �� � � �xs e u xs ke u u ke us s( ) ( ) ( )� � �1 1 u � y or z from expres- sion (for symmetrical section): � ��xs keywords: d �; e e; e �; stress �; u �; z �; � c; � f; � t; � x; � xs; � y; � � cache: ap-750.pdf plain text: ap-750.txt item: #1329 of 1656 id: ap-7512 author: Akka, Amine; Benabdelouahab, Farid; Yerrou, Randa title: Low earth orbit nanosatellite: influence of heat dissipation on passive thermal analysis date: 2022 words: 3151 flesch: 56 summary: A simple shape of nanosatellites will narrow the range of tem- peratures experienced by internal components, and also outer irradiance coming from the Sun and the Earth if absorptance α and emissivity ϵ, which are the primary means of passive thermal control, are well-chosen, depending on the material used [8–14]. Nanosatellite case study: Issue of heat dissipation across passive thermal analysis. keywords: analysis; case; conditions; control; earth; heat; nanosatellite; radiation; temperature cache: ap-7512.pdf plain text: ap-7512.txt item: #1330 of 1656 id: ap-7515 author: Dibyo, Sukmanto; Luthfi, Wahid; Pinem, Surian; Irianto, Ign Djoko; Sriwardhani, Veronica Indriati title: CFD simulation of partial channel blockage on plate-type fuel of TRIGA-2000 conversion reactor core date: 2022 words: 4005 flesch: 61 summary: Heat transfer analysis of plate type fuel element of reactor core. Channel blockage conditions can occur due to bending or swelling of fuel plates, caused by other material falling into the reactor pool, or debris carried by the coolant flow keywords: blockage; channel; coolant; figure; flow; fuel; plate; reactor; temperature; type cache: ap-7515.pdf plain text: ap-7515.txt item: #1331 of 1656 id: ap-752 author: Poul, R.; Hanus, D. title: Composite Axial Flow Propulsor for Small Aircraft date: 2005 words: 2243 flesch: 65 summary: The air deflection is then: � � �� 1 2 The proper blade/vane density is chosen according to Fig. 4: Scheme of VARTM 4 Loads applied to rotor blades A rotor blade is loaded by a centrifugal force, resulting in a tensional force and a torsional moment acting in the blade axis direction, and by air pressure, which induces bending moments acting in the fan tangential and axial direction. keywords: blade; composite; fan; fig; rotor; � � cache: ap-752.pdf plain text: ap-752.txt item: #1332 of 1656 id: ap-7523 author: Nguyen, Danh Huy; Vu, Minh Le; Trong , Hieu Do; Nguyen, Danh Giang; Nguyen, Tung Lam title: Active disturbance rejection control-based anti-coupling method for conical magnetic bearings date: 2022 words: 5008 flesch: 64 summary: Conical magnetic bearings with radial and thrust control. Fuzzy modeling and control for conical magnetic bearings using linear matrix inequality. keywords: bearing; conical; control; current; position; rotor; system cache: ap-7523.pdf plain text: ap-7523.txt item: #1333 of 1656 id: ap-754 author: Kaňovský, P.; Smrcek, L.; Goodchild, C. title: Simulation of UAV Systems date: 2005 words: 2375 flesch: 51 summary: � �� � �L 1 2 2� (1) Moment equations � , � p I [3, 4]: Force equations � sin � u qw rv C V S m T m g v ru pw C V S m � � � � � � � � � � � D LF 1 2 1 2 2 2 � � �� T m g w qu pv C V S m T m g � � � � � � cos sin � cos cos . keywords: autopilot; czech; design; fig; model; sensor; system; technical; uav; � � cache: ap-754.pdf plain text: ap-754.txt item: #1334 of 1656 id: ap-7559 author: Franek, Michal; Bielek, Boris; Macák, Marek; Klem, Josip title: Functional aerodynamics and its influence on the energy and thermal mode of a naturally ventilated double-skin transparent façade date: 2022 words: 5471 flesch: 56 summary: More modern works include computational fluid dynamics models, which can calculate airflow in DSTF cavity more accurately as compared to abovementioned mod- els 6. Conclusions The theory and practice of natural physical cavities is a very significant area of the future façade technologies of intelligent buildings. keywords: aerodynamic; air; building; cavity; dstf; energy; façade; figure; flow; skin; wind cache: ap-7559.pdf plain text: ap-7559.txt item: #1335 of 1656 id: ap-756 author: Dostál, M.; Zymák, J.; Valach, M. title: Physical and Numerical Difficulties in Computer Modelling of Pellet-Cladding Contact Problems for Burned-Up Fuel date: 2005 words: 2452 flesch: 55 summary: The age of high- -speed computers has brought a qualitative change into the analysis of contact problems. Where, when, how and in what detail do we have to predict and model it? 2 Mathematical description of the problem – unilateral contact Mathematical modelling of unilateral contact problems is a new area in applied mathematics. keywords: cladding; contact; czech; fig; fuel; pellet cache: ap-756.pdf plain text: ap-756.txt item: #1336 of 1656 id: ap-758 author: Filipská, H.; Štamberg, K. title: Mathematical Modeling of a Cs(I) – Sr(II) – Bentonite – Magnetite Sorption System, Simulating the Processes Taking Place in a Deep Geological Repository date: 2005 words: 6673 flesch: 62 summary: (71) Balance equation of the total concentration of Sr(II) in the so- lution, [�Sr]solution, including the precipitate: � � � � � � � � � � � � �Sr Sr SrCO SrNO SrSO SrCO solution 2 3 3 4 3 � � � � � � �0 0 . (15) corresponding to the function QES � f([H�]): SO H SOH� �� � 0, � � � � � � KS1 SOH SO H � �� � 0 , (12) SOH H SOH2 +0 � �� , � � � � � � KS2 SOH SOH H 2 + � � �0 , (13) � � � � � ��SOH SOH SOH SO2 +� � � �0 , (14) � � � � � � Q KS KS KS KS KS ES SOH 1 2 H 1 H 1 2 H � � � �� � � � � � � �� � � � � 2 2 1 1 � � keywords: exp �; h �; m �; sites �; � f([h; � ks; � na; � q; � soh; � sr; � x; � � cache: ap-758.pdf plain text: ap-758.txt item: #1337 of 1656 id: ap-7583 author: Saad, Nasser title: On generalized Heun equation with some mathematical properties date: 2022 words: 12573 flesch: 77 summary: − s(α3(s − 1) + β2) + ε1 (α1(s + 1) + β0)(s + 2) = P2;s(ε0) − k ((k − 1)α1 + β0) × ((k − 1)(k − 2)α3 + (k − 1)β2 + ε1)Pk−1(ε0), (75) initiated with P−1(ε0) keywords: differential; equation; k +; polynomial; β1 r; − √ cache: ap-7583.pdf plain text: ap-7583.txt item: #1338 of 1656 id: ap-7591 author: Hüseynli, Alisettar; Şimşek, Mehmet; Akcayol, M. Ali title: Improving QoS in mobile multimedia streaming with SCTP-PQ date: 2023 words: 6205 flesch: 67 summary: As can be seen in Figures 8a, 8b and 8c, SCTP- PQ has a more stable and much lower IPDV than standard SCTP for the first and second priority level data chunks. The developed protocol has been extensively tested and compared with SCTP. keywords: chunks; control; data; data chunks; delay; frames; level; multimedia; packets; priority; protocol; queue; sctp; streaming cache: ap-7591.pdf plain text: ap-7591.txt item: #1339 of 1656 id: ap-7596 author: Campoamor-Stursberg, Rutwig title: On some algebraic formulations within universal enveloping algebras related to superintegrability date: 2022 words: 5343 flesch: 51 summary: In this work we comment on some purely alge- braic approaches formulated in the enveloping algebras of Lie algebras for the identification or construction of quadratic algebras that may lead to super-integrable systems, once a suitable realization of the enveloping algebra by first-order differential operators has been chosen. We report on some recent purely algebraic approaches to superintegrable systems from the perspective of subspaces of commuting polynomials in the enveloping algebras of Lie algebras that generate quadratic (and eventually higher-order) algebras. keywords: algebra; algebraic; enveloping; hamiltonian; lie; operators; realization; systems cache: ap-7596.pdf plain text: ap-7596.txt item: #1340 of 1656 id: ap-760 author: Baláži, P. title: Various Properties of Sturmian Words date: 2005 words: 5789 flesch: 72 summary: Using this fact we can write ��� � � � � � ��, ( , ] { : }� � � � � �1 x n n n Zn , thus the elements of �� � � �, ( , ]�1 form an increasing se- quence ( )xn n Z� . � is a Sturm number, 2. � ��Q( ), 3. � � � � � �� � �1 or 1 � � � � � �� � � , where �� is the image of � under the Galois automorphism of the quadratic field Q( )� . keywords: s �; sturmian; w �; words; x �; z �; � � cache: ap-760.pdf plain text: ap-760.txt item: #1341 of 1656 id: ap-7611 author: Kulshreshtha, Daya Shankar; Kulshreshtha, Usha title: On the Wess-Zumino Model: a supersymmetric field theory date: 2022 words: 3437 flesch: 70 summary: The canonical Hamiltonian density of the theory is obtained as: Hc =(∂0A) ΠA + (∂0B) ΠB + (∂0ψα) πα + (∂0ψ̄α) π̄α − LB − LF (41) Supergravity theory on the other hand is a theory that has “local supersymmetry” and it is invariant under local Susy transformations where the transformation parameter depends on the spacetime xµ. keywords: spinor; supersymmetry; theory; wzm cache: ap-7611.pdf plain text: ap-7611.txt item: #1342 of 1656 id: ap-7618 author: Jeníková, Jitka; Michaliková, Kristýna; Hrdlička, František; Hrdlička, Jan; Pilař, Lukáš; Vodička, Matěj; Skopec, Pavel title: Applicability of Secondary Denitrification Measures on a Fluidized Bed Boiler date: 2022 words: 6319 flesch: 60 summary: Formation of NOX emissions There are three known mechanisms of nitrogen oxides formation in combustion processes [2–4]: • thermal NOX – oxidation of molecular nitrogen from the oxidant at high temperatures, known as the Zeldovich mechanism, • fuel NOX – oxidation of chemically bound nitrogen in solid fuels, 341 https://doi.org/10.14311/AP.2022.62.0341 https://creativecommons.org/licenses/by/4.0/ https://www.cvut.cz/en J. Jeníková, K. Michaliková, F. Hrdlička et al. *BAT-AELs (mg/Nm3) for NOX emissions from combustion of black and/or brown coal into the atmosphere for the new combustion plants with the total rated thermal output < 100 MWth of 100–150 mg/mN 3 [23]. for the SNCR due to the properties of ammonia, which has very strict storage rules, and therefore is not used in large industrial plants for the SNCR method. keywords: agent; bed; boiler; combustion; denitrification; gas; measures; method; nox; reduction; scr; sncr; temperature cache: ap-7618.pdf plain text: ap-7618.txt item: #1343 of 1656 id: ap-7619 author: Vodička, Matěj; Michaliková, Kristýna; Hrdlička, Jan; Skopec, Pavel; Jeníková, Jitka title: Experimental verification of the impact of the air staging on the NOx production and on the temperature profile in a BFB date: 2022 words: 6502 flesch: 60 summary: For coal combustion, no positive impact of staged injec- tion of combustion air was observed in the 30 kWth facility. NOX emissions from bubbling fluidized bed combustion of lignite coal. keywords: air; bed; bfb; case; combustion; facility; freeboard; gas; kwth; nox; temperature cache: ap-7619.pdf plain text: ap-7619.txt item: #1344 of 1656 id: ap-762 author: Ambrož, P. title: Non-Standard Numeration Systems date: 2005 words: 3691 flesch: 72 summary: Let � > 1 satisfy Property (T), and suppose that for every minimal forbidden string ukuk�1…u0 we have the following condition: If vnvn�1…v is the lexicographically greater string of (T) corresponding to ukuk�1…u0 then v v v u u un n k k� � � � � � �� �1 1 0� �� . L n x y xy xy n � �� � � � � � �( ): min{ | , , ( ) }� � �� �N Z ZFin . keywords: � -expansion; � l; � z; � � cache: ap-762.pdf plain text: ap-762.txt item: #1345 of 1656 id: ap-7620 author: Krempaský, Jakub; Havlík, Jan; Dlouhý, Tomáš title: Theoretical and experimental study of water vapour condensation with high content of non-condensable gas in a vertical tube date: 2022 words: 5965 flesch: 53 summary: Experiments to determine the effect of NCG on water vapour condensation have been per- formed, so far, for an artificially prepared mixture of water vapour and air, also because of the availabil- ity of relevant literature references. [5] conducted an experimental and the- oretical study of water vapour condensation in the presence of air in a vertical tube. keywords: air; condensation; condenser; film; heat; htc; mass; mixture; transfer; vapour; water; water vapour cache: ap-7620.pdf plain text: ap-7620.txt item: #1346 of 1656 id: ap-7623 author: Kulshreshtha, Usha; Kulshreshtha, Daya Shankar; Sihagb, Bheemraj title: Maxwell-Chern-Simons-Higgs theory date: 2022 words: 3149 flesch: 69 summary: − y1)δ(x2 − y2) − y1)δ(x2 − y2) (Π) {Φ(x0, x1, x2) , Φ∗(x0, y1, y2)}D = (−Φ∗)δ(x1 − y1)δ(x2 − y2) (Π) {Φ(x0, x1, x2) , A0(x0, y1, y2)}D = (Φ) δ(x1 − y1)δ(x2 − y2) (ieΠ) {Φ(x0, x1, x2) , A1(x0, y1, y2)}D = ∂1δ(x1 − y1)δ(x2 − y2) (ieΠ) {Φ(x0, x1, x2) , A2(x0, y1, y2)}D = δ(x1 − y1) keywords: field; gauge; hamiltonian; higgs; term; theory cache: ap-7623.pdf plain text: ap-7623.txt item: #1347 of 1656 id: ap-7627 author: Bui, Cuong Mai; Phan, Nguyen Duy Minh; Tran, Ngo Quoc Huy; Doan, Le Anh; Vo, Quang Truong; Tran, Duy Chung; Nguyen, Thi Thanh Vi; Nguyen, Duc Long; Huynh, Van Sanh; Ho, Tran Anh Ngoc title: Disinfection performance of an ultraviolet lamp: a CFD investigation date: 2022 words: 4448 flesch: 57 summary: UV intensity distribution along the char- acteristic line. [W] I UV intensity [W/m2] I0 Initial UV intensity keywords: bactericidal; disinfection; figure; intensity; lamp; rate; virus cache: ap-7627.pdf plain text: ap-7627.txt item: #1348 of 1656 id: ap-7630 author: Švanda, Ondřej; Pollert, Jaroslav title: CFD modelling of a secondary settling tanks: generalization based on database relations date: 2022 words: 5294 flesch: 60 summary: This is very important to notice as this is actually the cumber stone of sludge settling models – they are fitted on very limited set of data representing usually only one flow condition. That significantly simplifies the preparation work to run a CFD simulation of the SST and more impor- tantly, it expands the usage of CFD settling model outside the batch test specific WWTP. keywords: cfd; concentration; data; flow; model; sedimentation; settling; sludge; solids; solids concentration; sst; tank cache: ap-7630.pdf plain text: ap-7630.txt item: #1349 of 1656 id: ap-7633 author: Hahn, Gabriela; Monteiro da Fonseca Thomé da Silva, Antônio Henrique; Tempel Stumpf, Felipe; Marcos Guilherme, Carlos Eduardo title: Evaluation of residual strength of polymeric yarns subjected to previous impact loads date: 2022 words: 3939 flesch: 57 summary: BS EN 892:2012 brings different proce- dures depending on the investigated factors, such as stiffness, cycle number for impact load, transmitted force in the rope and maximum stretching. Results of the tensile tests for residual strength evaluation immediately after impact load – higher dead weights. keywords: impact; load; materials; pet; samples; strength; tensile; tests; ybl cache: ap-7633.pdf plain text: ap-7633.txt item: #1350 of 1656 id: ap-7638 author: Patel, Niru C.; Patel, Jimit R.; Deheri, Gunamani M. title: A comparative study of ferrofluid lubrication on double-layer porous squeeze curved annular plates with slip velocity date: 2022 words: 4440 flesch: 58 summary: Magnetic fluid based squeeze film between porous annular curved plates with the effect of rotational inertia. Couple stress fluid-based squeeze film between porous annular curved plates with the effect of rotational inertia. keywords: bearing; ferrofluid; film; lbc; lubrication; patel; plates; slip; squeeze; velocity cache: ap-7638.pdf plain text: ap-7638.txt item: #1351 of 1656 id: ap-764 author: Lavička, H.; Slanina, F. title: A Model of the Distribution of Wealth in Society date: 2005 words: 3227 flesch: 70 summary: The distribution of wealth (Fig. 2) permits the power-law tail for p>pa (the same symbol is used as a consequence of the power-law behavior and the different social tension evolution) with exponent �0.96, which is stable for the interval of p at the thermodynamic limit N � ��, T � �� and N T con- stant. Pareto’s law states that the high end of wealth distribution fol- lows the power-law P(w) ~ w����, where exponent � is stable for an investigated country in a given period of time. keywords: agents; distribution; law; model; power; wealth; � � cache: ap-764.pdf plain text: ap-764.txt item: #1352 of 1656 id: ap-7640 author: Michaliková, Kristýna; Hrdlička, Jan; Vodička, Matěj; Skopec, Pavel; Jeníková, Jitka; Pilař, Lukáš title: Experimental verification of the efficiency of selective non-catalytic reduction in a bubbling fluidized bed combustor date: 2022 words: 5643 flesch: 58 summary: Dependence of NOX reduction efficiency on temperature for different NSRs. Dependence of NOX reduction efficiency on NSR for different temperatures. keywords: air; bed; combustion; freeboard; nox; reduction; sncr; temperature; urea cache: ap-7640.pdf plain text: ap-7640.txt item: #1353 of 1656 id: ap-7644 author: Venglár, Michal; Lamperová, Katarína; Sokol, Milan title: Performance assessment of steel truss railway bridge with curved track date: 2022 words: 5183 flesch: 56 summary: IBIS-S interferometric radar was also used to measure bridge displacements. Therefore, administrators of railway networks around the world are the most responsible for ensuring the integrity of the networks with railway bridges being an integral part of these networks. keywords: analysis; bridge; direction; displacements; fem; figure; model; railway; results; structure; track cache: ap-7644.pdf plain text: ap-7644.txt item: #1354 of 1656 id: ap-7652 author: Natanson, Gregory title: Quantization of rationally deformed Morse potentials by Wronskian transforms of Romanovski-Bessel polynomials date: 2022 words: 10334 flesch: 66 summary: [y; a; ε | − ...m1] = 0 (103) solved under the DBCs lim y→0 ∞ ̸Ψ [y; a; εn(a) | − ...m1] = 0 (104) has exactly N(a) eigenfunctions ∞ ̸Ψ keywords: bessel; equation; morse; polynomials; potentials; solutions; | − cache: ap-7652.pdf plain text: ap-7652.txt item: #1355 of 1656 id: ap-7656 author: Zhao, Hui; Liu, Yu-Qiu; Wang, Zhi-Xi; Fei, Shao-Ming title: A note on entanglement classification for tripartite mixed states date: 2022 words: 4056 flesch: 73 summary: − T 1|23 2 ( ∑ pi|φi⟩⟨φi|)∥tr ≤ ∑ pi∥T 1|23 1 (|φi⟩⟨φi|) − T 1|23 2 (|φi⟩⟨φi|)∥tr, namely, ∥T 1|23 1 (ρ) − T 1|23 2 (ρ)∥tr ≤ √ 6. (2) If ρ = |φ⟩⟨φ| is 2|13 separable, we have |φ2|13⟩ = |φ2⟩ ⊗ |φ13⟩ ∈ H2 2 ⊗ H6 13, where H6 13 = H2 1 ⊗ H3 3 . For any mixed state ρ =∑ pi|φi⟩⟨φi| ∈ H2 1 ⊗H2 2 ⊗H3 3 , ∑ pi = 1, 0 < pi ≤ 1, we have: (1) If ρ is 1|23 separable, then ∥T 1|23 1 −T 1|23 2 ∥tr ≤ √ 6; (2) If ρ is 2|13 separable, then ∥T 2|13 1 −T 2|13 2 ∥tr ≤ √ 6; (3) If ρ is 3|12 separable, then ∥T 3|12 1 −T 3|12 2 ∥tr ≤ √ 3. Proof (1) If ρ = |φ⟩⟨φ| is 1|23 separable, we have |φ1|23⟩ = |φ1⟩ ⊗ |φ23⟩ ∈ H2 1 ⊗ H6 23, where H6 23 = H2 2 ⊗H3 3 . keywords: entanglement; separable; t0t1 cache: ap-7656.pdf plain text: ap-7656.txt item: #1356 of 1656 id: ap-7658 author: Červený, Ondřej; Vybíral, Pavel; Hemerka, Jiří; Mareš, Luďek title: Measurement of solid particle emissions from oxy-fuel combustion of biomass in fluidized bed date: 2022 words: 2447 flesch: 58 summary: Solid particle emission measurement To determine the properties of solid particles contained in the flue gas, we used the gravimetric analysis. Values of dilution ratio obtained using the given method and experimentally by measurement as a function of sample gas temperature. keywords: dilution; dilutor; figure; flow; gas; measurement; ratio cache: ap-7658.pdf plain text: ap-7658.txt item: #1357 of 1656 id: ap-7659 author: Reboiro, Marta; Ramírez, Romina; Fernández, Viviano title: Swanson Hamiltonian revisited through the complex scaling method date: 2022 words: 4938 flesch: 70 summary: Communications in Mathematical Physics 27:1–9, 1972. https://doi.org/10.1007/BF01649654. Journal of Physics A: Mathematical and General 35(31):L467–L471, 2002. https://doi.org/10.1088/0305-4470/35/31/101. keywords: eigenfunctions; hamiltonian; journal; mathematical; physics; swanson cache: ap-7659.pdf plain text: ap-7659.txt item: #1358 of 1656 id: ap-766 author: Novotný, J.; Štefaňák, M.; Košt’ák, V. title: Multi-Particle Universal Processes date: 2005 words: 4371 flesch: 64 summary: The mapping on the density operators � �out inT T� � , where � is normalizing factor �out to be a density matrix, ful- fills the covariant condition if the following equality is satis- fied for all one-particle unitary transformations U and for all one-particle pure input states p p : †p p p p� � � 0 (3) where the one-particle unitary transformation U(p) maps the state p0 to the state p , i. e. p p p� U( ) 0 . keywords: particle; processes; � � cache: ap-766.pdf plain text: ap-766.txt item: #1359 of 1656 id: ap-7660 author: Taira, Takanobu title: Complex topological soliton with real energy in particle physics date: 2022 words: 7973 flesch: 70 summary: We summarise the procedure used to find the classical masses of Higgs particle, massive gauge boson and t’Hooft-Polyakov monopole in non-Hermitian gauge field theory. Methods In this section, we will summarise the method used in [8–11] to find the masses of the Higgs particles, mas- sive gauge particles and t’Hooft-Polyakov monopoles in non-Hermitian gauge field theory. keywords: energy; field; gauge; hermitian; masses; monopole; non; solutions cache: ap-7660.pdf plain text: ap-7660.txt item: #1360 of 1656 id: ap-7668 author: Escobar-Ruiz, Adrian M.; Montoya, Fidel title: Generalized three-body harmonic oscillator system: ground state date: 2022 words: 4149 flesch: 61 summary: In the case of equal masses m1 = m2 = m3 the co- ordinate I is proportional to the hyperspherical radius (hyperradious). In a previous work [4], the most general quantum system of a three-body chain of harmonic oscillators, in Rd, was explored exhaustively. keywords: body; harmonic; operator; oscillator; state; system cache: ap-7668.pdf plain text: ap-7668.txt item: #1361 of 1656 id: ap-7669 author: Smilga, Andrei title: Modified Korteweg-de Vries equation as a system with benign ghosts date: 2022 words: 4447 flesch: 67 summary: − 2u3uxx − 2u6 ] (12) For the time-independent Ansatz, we obtain, instead of (7), ∂x(uxx + 2u3) Suppressing the nonlinear term in the KdV or MKdV equations, we obtain uxxx + ut = 0 . keywords: equation; ghosts; mkdv; problem; system; u(t cache: ap-7669.pdf plain text: ap-7669.txt item: #1362 of 1656 id: ap-7670 author: Seghman, Petr; Krátký, Lukáš; Jirout, Tomáš title: Effect of membrane separation process conditions on the recovery of syngas components date: 2022 words: 4263 flesch: 57 summary: The presented study focuses on inspecting the dependency between process conditions, especially permeate and retentate pressure and component recovery of H2, CO, and CO2 during a membrane separation of model syngas. Keywords: Membrane separation, syngas improvement, components recovery, hollow fibre module. keywords: co2; component; mol; permeate; pressure; recovery; separation cache: ap-7670.pdf plain text: ap-7670.txt item: #1363 of 1656 id: ap-7671 author: Turbiner, Alexander V.; del Valle, Juan Carlos title: From quartic anharmonic oscillator to double well potential date: 2022 words: 1813 flesch: 62 summary: 3. Double-well potential: wavefunctions Following the prescription, usually assigned in folklore to E. M. Lifschitz – one of the authors of the famous Course on Theoretical Physics by L. D. Landau and E. M. Lifschitz – when a wavefunction for single well potential with minimum at u = 0 is known, Ψ(u), the wavefunction for double well potential with min- ima at u = 0, 1 can be written as Ψ(u) ± Ψ(u − 1). Double well potential: perturbation theory, tunneling, WKB (beyond instantons). keywords: potential cache: ap-7671.pdf plain text: ap-7671.txt item: #1364 of 1656 id: ap-7672 author: Contreras-Astorga, Alonso; Fernández C., David J.; Muro-Cabral, César title: Linearised coherent states for non-rational SUSY extensions of the harmonic oscillator date: 2022 words: 4903 flesch: 60 summary: After the linearisation, we derive coherent states as eigenstates of the annigilation operator and analyse some relevant mathematical and physical properties, such as the completeness relation, mean-energy values, temporal stability, time evolution of the probability densities, and Wigner distributions. Keywords: Supersymmetric quantum mechanics, non-rational extensions, linearised ladder operators, coherent states. keywords: extensions; harmonic; ladder; operators; oscillator; physics; quantum; states; susy cache: ap-7672.pdf plain text: ap-7672.txt item: #1365 of 1656 id: ap-7673 author: Castillo-Celeita, Miguel; Contreras-Astorga, Alonso; Fernández C., David J. title: Photonic graphene under strain with position-dependent gain and loss date: 2022 words: 4747 flesch: 70 summary: We work with photonic graphene lattices under strain with gain and loss, modeled by the Dirac equation with an imaginary mass term. Keywords: Graphene, Dirac materials, photonic graphene, matrix supersymmetric, quantum mechan- ics. keywords: dirac; gain; graphene; hamiltonian; loss; matrix; photonic; strain cache: ap-7673.pdf plain text: ap-7673.txt item: #1366 of 1656 id: ap-7674 author: Gutiérrez Altamirano, Izamar; Contreras-Astorga, Alonso; Raya Montaño , Alfredo title: Time-dependent step-like potential with a freezable bound state in the continuum date: 2022 words: 4352 flesch: 69 summary: = y at t = 0. but before we had A = 0, one can still have a Schrödinger equation without vector potential by tuning appropriately the scalar potential. keywords: continuum; equation; potential; state; time cache: ap-7674.pdf plain text: ap-7674.txt item: #1367 of 1656 id: ap-7675 author: Díaz-Bautista, Erik title: About the time evolution of coherent electron states in monolayers of boron allotropes date: 2022 words: 7563 flesch: 67 summary: Physical Review B 81(24):241412, 2010. https://doi.org/10.1103/physrevb.81.241412. Physical Review B 86(15):155435, 2012. keywords: boron; borophene; dirac; electric; electron; graphene; physical; pmmn; review; states; ­10; ­15 cache: ap-7675.pdf plain text: ap-7675.txt item: #1368 of 1656 id: ap-7678 author: Handy, Carlos R. title: Orthonormal polynomial projection quantization: an algebraic eigenenergy bounding method date: 2022 words: 10796 flesch: 65 summary: OPPQ-BM Estimates (i.e. ∂ESN (E) = 0) for V (x) = x6 − 4x2, ms = 0, R(x) = Φgr(x) based on the first 61, EMM generated, ground state power moments {ugr(p ≤ 60)}. Singular-perturbation strong coupling problems and moment representations It is not widely appreciated that power moments are relevant in understanding the multiscale structure of most systems. keywords: bounding; bounds; emm; mer; method; moments; oppq; order; power; state cache: ap-7678.pdf plain text: ap-7678.txt item: #1369 of 1656 id: ap-768 author: Novotný, P.; Hrivnák, J. title: On Orbits of the Ring Zmn under Action of the Group SL(m, Zn) date: 2005 words: 4884 flesch: 80 summary: � � �{( ) | ,gcd( , ) } ( ( )). If n n� �N, 2 is written in the form n pi k i r i� � 1 , where pi are distinct primes, then according to [10], the order of SL(m, Zn) is SL m n p n m i j j m i r ( , )Z � � � � � � � � � �� 2 1 21 1 1 . (2.3) keywords: � z; � � cache: ap-768.pdf plain text: ap-768.txt item: #1370 of 1656 id: ap-7684 author: Řeřicha, Petr title: A Mindlin shell finite element for stone masonry bridges with backfill date: 2022 words: 7720 flesch: 68 summary: Element internal forces {S} and nodal forces {X} st = (0.5 − ξ 6)ξεt, sb = εtξ 2/6 ∂st ∂εt = (0.5− ξ 6)ξ−(0.5− ξ 3)ξ2 εb εt , ∂st ∂εb = (0.5−ξ/3)ξ2 ∂sb ∂εt = ( 1 − 2ξ εb εt ) TM shell element The DOFs at the bottom vertices of the elements connecting to a node do not lie in the same plane and are not independent of the DOFs at the top vertices. keywords: arch; bridges; element; figure; forces; masonry; matrix; node; normal; plane; shear; shell cache: ap-7684.pdf plain text: ap-7684.txt item: #1371 of 1656 id: ap-7699 author: Rachwał, Lesław title: How to understand the structure of beta functions in six-derivative Quantum Gravity? date: 2022 words: 38570 flesch: 54 summary: (One sees due to the requirement of general covariance that this considera- tion of conformal gravitational theories makes sense only in even dimensions d of spacetime.) Asymptotic freedom and higher derivative gauge theories. keywords: action; beta; case; conformal; derivative; derivative theory; functions; gauge; gravitational; gravity; level; loop; model; non; operator; quantum; quantum gravity; quantum theory; renormalizable; results; terms; theories; theory; uv divergences cache: ap-7699.pdf plain text: ap-7699.txt item: #1372 of 1656 id: ap-770 author: Thinová, L.; Fronka, A.; Milka, D. title: Personal Dosimetry Enhancement for Underground Workplaces date: 2005 words: 1967 flesch: 40 summary: With the aim of specifying the calculation of the real effective dose in caves, the following test measurements were carried out a few years ago: natural radioactive element content eval- uation in subsoils and in water inside/outside to study radon sources in the cave; continual radon measurements; regu- lar radon and daughters measurements using a sampling procedure to specify the proportion of radon daughters; regular indoor air flow measurements to study the location of the radon supply and its transfer among individual areas of the cave; 5-day aerosol particle-size spectrum measure- ments to determine the free fraction and to compare the aerosol spectra in an apartment and in a cave; comparative measurements using various radon and daughters monitors to study their behaviour in an area with high humidity (in- cluding Radim 4 – a device for simultaneous detection of radon concentration and concentration of unattached and at- tached fractions of its daughters); monitoring the behaviour of guides and visitors to record time spent in the cave, related to the continuously monitored levels of Rn concentration; some personal monitors for testing the detection of radon and its daughters. The results from the group of evaluated caves did not confirm the presence of aerosol sources, or other sources of radon, apart from attendee rock (possibly water); high radon concentrations are accompanied by a very low flow rate; the equilibrium fac- tor varies mostly between 0.2–0.5; the unattached fraction constituted approximately 2 %. keywords: aerosol; concentration; daughters; dose; radon cache: ap-770.pdf plain text: ap-770.txt item: #1373 of 1656 id: ap-7715 author: Golias, Emmanouil; Vougioukas, Emmanouil A.; Wittemann, Klaus; Kalogeropoulos, George I.; Karayannis, Chris title: Cyclic response of RC beam-column joints strengthened with transverse steel bars and with C-FRP diagonal ties date: 2022 words: 4962 flesch: 55 summary: An analytical review of state-of-the-art interventions to RC beam column joints with FRP has been also reported [12]. In recent experimental techniques [13–17], external FRP flexural ropes have been used as an additional diagonal reinforcement to existing beam column joints. keywords: beam; capacity; column; cyclic; damage; figure; load; loading; reinforcement; specimen; test cache: ap-7715.pdf plain text: ap-7715.txt item: #1374 of 1656 id: ap-7718 author: Zelaya, Kevin title: Time-dependent mass oscillators: constants of motion and semiclasical states date: 2022 words: 7132 flesch: 62 summary: The parameters have been fixed as a = c = w0 = 1, w1 = 2, µ0 = 0.3, and κ = 0.5. to the point that, for times t > 4 is almost indistin- guishable. In the latter, it can be verified that the width of the wavepackets oscillates in a bounded way for times t > 2. Partic- ularly, for the coherent state case of Figure 4c, the dynamics of the wavepacket can be identified clearly, where the maximum point follows the corresponding classical trajectory (dashed-black). keywords: caldirola; equation; kanai; mass; motion; oscillator; quantum; solutions; states; time cache: ap-7718.pdf plain text: ap-7718.txt item: #1375 of 1656 id: ap-772 author: Čechák, T.; Musílek, L.; Trojek, T.; Kopecká, I. title: Application of X-Ray Fluorescence Analysis in Investigations of Historical Monuments date: 2005 words: 3061 flesch: 56 summary: � is the fraction of the emitted photons collected within the detector solid angle, �(ES) is the detection efficiency at the fluorescence energy of the substrate ES; S is the density of the substrate; C is the density of the coating; and �S(E0) and �S(ES) are mass absorption coeffi- cients of the substrate at energies E0 and ES, respectively and �C(E0) and �C(ES) are the mass absorption coefficients of the coating at energies E0 and ES respectively Under this assumption, the fluorescence intensity ISF measured by the detector is given by I I E E E E SF S C i C S � � � � � 0 0 0 4 1 �� � � � � � � ( ) ( ) exp ( ) sin ( ) sin � f C S i S h E � � � � � � � �� � � � �� � � �� � � � �� � � � 1 1 0sin ( ) sin ( ) sin� � �i S S f E � where I0 is the intensity of the incident radiation, and � is the excitation factor for the respective X-ray line of the substrate. keywords: analysis; fluorescence; fresco; pigments; ray; � � cache: ap-772.pdf plain text: ap-772.txt item: #1376 of 1656 id: ap-7721 author: Abed, Hadeel S.; Abdullah, Hikmat N. title: Improvement of spectrum sensing performance in cognitive radio using modified hybrid sensing method date: 2022 words: 5337 flesch: 49 summary: Pd versus Eb/No of proposed sensing methods under Rayleigh fading and non-cooperative scenario. Figure 3 shows the performance curves of Pd vs Eb/No for traditional sensing methods (energy detec- tion, cyclostationary, and matched filter) in AWGN using the non-cooperative scenario. keywords: cognitive; complexity; cooperative; detection; hybrid; method; performance; sensing; signal; spectrum cache: ap-7721.pdf plain text: ap-7721.txt item: #1377 of 1656 id: ap-7723 author: Beneduci, Roberto; Frion, Emmanuel; Gazeau, Jean-Pierre title: Quantum description of angles in the plane date: 2022 words: 5760 flesch: 72 summary: Finally, we demonstrated that the isomorphism C2 ≃ R4 allows to write Bell states in real space, with the introduction of the “flip” operator (46). A quantum measurement corresponds to an affine map S(H) 7→ M+(Ω) from quantum states to probability measures, ρ 7→ µρ. keywords: cos; plane; quantum; sin; space; states cache: ap-7723.pdf plain text: ap-7723.txt item: #1378 of 1656 id: ap-7733 author: Mandal, Bhabani Prasad title: Rational extension of many particle systems date: 2022 words: 5764 flesch: 63 summary: QES many particle system In this section, we would like to discuss a rational extension of Calogero like many particle systems In this talk, we briefly review the rational extension of many particle systems, and is based on a couple of our recent works. keywords: journal; laguerre; model; particle; physics; polynomials; systems cache: ap-7733.pdf plain text: ap-7733.txt item: #1379 of 1656 id: ap-7737 author: Sabatini, Michel; Havlík, Jan; Dlouhý, Tomáš title: Analysis of parameters important for indirect drying of biomass fuel date: 2022 words: 5178 flesch: 52 summary: Schematic illustration of moisture content, drying rate, and material temperature. Sensitivity analysis using penetration model for indirect drying of biomass The aim of the sensitivity analysis of the penetration model is to determine the effect of the change in the v of individual input parameters on its overall heat transfer coefficient and drying rate. keywords: bed; biomass; coefficient; drying; heat; material; model; parameters; rate; surface cache: ap-7737.pdf plain text: ap-7737.txt item: #1380 of 1656 id: ap-7738 author: Agarwal, Kaustubh S.; Muldoon, Jacob; Joglekar, Yogesh N. title: Conserved quantities in non-hermitian systems via vectorization method date: 2022 words: 5329 flesch: 59 summary: Inspired by the Lindblad density matrix equation, our approach provides a useful addition to the well-established methods for characterizing time-invariants in non-Hermitian systems. 1/2022 Conserved quantities in non-Hermitian systems If λpq is real, we can choose them to be Hermitian, as in the case of a static Hamiltonian. keywords: -symmetric; hamiltonian; operators; physical; physics; quantum; symmetry; systems; time; ℜλt cache: ap-7738.pdf plain text: ap-7738.txt item: #1381 of 1656 id: ap-774 author: Tippetts, J. R.; Tesař, V. title: Flow Visualisation by Condensing Steam – an Unusual Method Applied to Development of a Low Reynolds Number Fluidic Selector Valve date: 2005 words: 8281 flesch: 40 summary: Somewhat surprisingly, there does not seem to be any description of this method in authori- tative monographs (e.g. [3, 4]) on flow visualization methods. The task Present authors find flow visualization indispensable for their current development of no-moving-part fluidic devices, in particular flow control valves. keywords: /qfactor; /quality; /vsamples; adobe; control; fig; flow; model; pdf; valve; water cache: ap-774.pdf plain text: ap-774.txt item: #1382 of 1656 id: ap-7758 author: Alla Baksh, Salma; Bannihalli Naganagowda, Hanumagowda title: Study of surface roughness with MHD and couple stress fluid on porous curved annular plates date: 2022 words: 5582 flesch: 67 summary: Magnetic fluid based squeeze film in rough rotating curved porous annular plates: Deformation effect. The expressions for squeeze film pressure, load-carrying capacity, and squeeze film time are obtained analytically, the results are discussed for various values of operating parameters, and are plotted graphically. keywords: figure; film; fluid; roughness; squeeze; values cache: ap-7758.pdf plain text: ap-7758.txt item: #1383 of 1656 id: ap-776 author: Tesař, V. title: Time-Mean Helicity Distribution in Turbulent Swirling Jets date: 2005 words: 6877 flesch: 52 summary: The profile shape may be improved by a long nozzle exit channel, but this generates a thick boundary layer (degrading the outer parts of the profile) and the inevitable fast dissipation of the swirl decreases the achiev- able magnitude of nozzle exit helicity. In practical flowfield studies, the variable of interest is the local quantity, helicity density � (m/s2) as defined in Fig. keywords: czech; exit; fig; flow; helicity; jet; nozzle; profiles; swirl; time; velocity; vol; � � cache: ap-776.pdf plain text: ap-776.txt item: #1384 of 1656 id: ap-7773 author: Aruntaş, Hüseyin Yilmaz; Yildiz, Erkan; Kaplan, Gökhan title: The engineering performance of eco-friendly concretes containing diatomite fly ash and ground granulated blast furnace slag date: 2022 words: 9911 flesch: 58 summary: Investigation into the long-term in-situ performance of high fly ash content concrete used for structural applications. Study on preparation of ultra-high strength and high performance concrete from diatomite and its mechanical properties. keywords: abrasion; ash; cement; compressive; concrete; diatomite; figure; fly; ggbfs; high; materials; mixtures; properties; ratio; replacement; scm; scms; setting; standard; strength; time; water cache: ap-7773.pdf plain text: ap-7773.txt item: #1385 of 1656 id: ap-778 author: Abdelaziz, T. H. S.; Valášek, M. title: A Complete Parametric Solutions of Eigenstructure Assignment by State-Derivative Feedback for Linear Control Systems date: 2005 words: 8390 flesch: 65 summary: I A BU G U( ) ( ) ( ) ( ) ( )� � � � �� � �� n 1 . (25) Substituting � by �i and postmultiplying by a vector 1 1 l fij k ! � on both sides of (29) gives � � � �( ) ! ( ) ! keywords: b �; d �; j �; k �; m �; w �; wv �; � c; � f; � q; � v; � � cache: ap-778.pdf plain text: ap-778.txt item: #1386 of 1656 id: ap-780 author: Dynda, V. title: Generic Platform for Failure Recovery in Survivable Trees date: 2005 words: 6781 flesch: 58 summary: Graph S acts as an underlying network for a tree-topology overlay network modeled as graph T � (��, ��), where �� �� represents tree nodes, �� is a finite set of core tree edges representing overlay communication links connecting individual nodes ��. 3: Relation between nodes n AT ( )�� and faulty cluster �� �� n j n j�1 n j�k n i�1 n j�2 n i R �(ni , nj ) BC(��) BR T (n j , 2) BR T (n j , 3) BR T (n, k�1) (a) (b) ��n 8 n 9 n 10 n 1 n 2 n 3 n 4 n 5 n 6 n 7 (n 8 ,2) (n 8,3) (n 9 ,4 ) (n 10 ,2) (n 10 ,2 ) (n 1 0 ,3 ) (n 9 ,2 ) (n 9 ,2) (n 9 ,3) (n 8 ,2 ) (n8 ,2) Fig. 4: Routing from n Ai T ( )�� to ni�1 (a) and routing around ��� � n n n8 9 10, , (b) 7 Leader link election The task of the leader link election algorithm is to identify a leader – a single edge on the bypass cycle that will not partic- ipate in fragment reconnection in order to ensure correctness of the restored tree while keeping it connected. keywords: bypass; failure; fragments; multicast; network; nodes; recovery; scheme; tree; � � cache: ap-780.pdf plain text: ap-780.txt item: #1387 of 1656 id: ap-782 author: Večeř, P.; Kreidl, M.; Šmíd, R. title: Condition Indicators for Gearbox Condition Monitoring Systems date: 2005 words: 5530 flesch: 56 summary: The ability of a selected condition indicator to describe the degree of gearing wear was tested using vibration signals ac- quired during durability testing of manual transmission with helical gears. This parameter focuses on the trend of the vibra- tion and is sensitive to vibration signal changes. keywords: condition; czech; gearbox; monitoring; na4; parameter; peak; signal; university; value; vibration; vibration signal; � � cache: ap-782.pdf plain text: ap-782.txt item: #1388 of 1656 id: ap-7821 author: Nedoma, Marek; Staf, Marek; Hrdlička, Jan title: Experimental and simulation study of CO2 breakthrough curves in a fixed-bed adsorption process date: 2022 words: 9521 flesch: 52 summary: Blank exper- iments have been carried out using inert material (glass beads of the same total volume as the real sample) prior to CO2 adsorption. Similar differences between isothermal and non-isothermal models using the LDF model for CO2 adsorption were observed by [48]. keywords: adsorbent; adsorption; bar; bed; breakthrough; capture; co2; column; curve; engineering; figure; flow; gas; mass; pressure; temperature; time cache: ap-7821.pdf plain text: ap-7821.txt item: #1389 of 1656 id: ap-784 author: Ficker, T. title: On Deterministic Chaos in Microdischarge Phenomena date: 2005 words: 3549 flesch: 36 summary: For this purpose the series of heights (amplitudes) � �Ui i N �1 was rear- ranged into a sequence of d-dimensional pseudo-vectors �(d) 44 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 45 No. 6/2005 � (1) Between the i-th and j-th pseudo-vectors �i(d) and �j(d) there is a scalar separation �� �i j keywords: adobe; pdf; � � cache: ap-784.pdf plain text: ap-784.txt item: #1390 of 1656 id: ap-786 author: Čermáková, E. title: Magnetization of Steel Building Materials and Structures in the Natural Geomagnetic Field date: 2005 words: 3803 flesch: 53 summary: What is called the effective magnetic moment mG is therefore established as a projection of the vector mtot into the direction of the opposite vector J, which is sufficient to describe the basic magnetic phenomena given by the rela- tionship between vectors mG and J. Vector J (and also mG) can take only discrete positions in the direction of the magnetic field (the projections JH of vec- tor J in the direction of field H are given as multiples of Planck’s constant � � h ( )2� , in the form J MH G� �; MG is the quantum number for the projection of the total moment of the atom momentum into the axis of quantization. The geomagnetic field described above magnetizes ferro- magnetic materials (involving various alloy steels, cast iron, steel reinforcement of panels, various types of building steels) which become magnetized even by weak magnetic fields and keep this condition also after the external magnetic field has been removed. keywords: building; field; fig; geomagnetic; magnetic; steel; � � cache: ap-786.pdf plain text: ap-786.txt item: #1391 of 1656 id: ap-788 author: Kubalík, P.; Kubátová, H. title: Parity Codes Used for On-Line Testing in FPGA date: 2005 words: 5655 flesch: 62 summary: 3: Fault Model – Example G a a a a a a a a � 1 0 0 0 1 0 0 0 1 11 12 1 3 1 4 2 1 2 2 2 3 2 4 � � � � � � � , , , , , , , , � � � � a a a a111 112 11 3 11 4, , , , � � � � � � � � � � � � � � Fig. 4: Generating matrix for Hamming code (15, 11) 1 1 1 1 0 1 1 1 1 0 1 1 0 0 1 1 1 1 0 1 0 1 0 1 0 0 0 1 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Fig. In addition to some commercial tools such as Leonardo Spectrum [13] and Synplify [12] we used format converting tools, parity circuit generator tools and simulation tools. keywords: area; bits; circuit; code; error; fault; fig; lut; output; parity; � � cache: ap-788.pdf plain text: ap-788.txt item: #1392 of 1656 id: ap-790 author: Mervart, L.; Čepek, A. title: Geoinformatics Study at the Czech Technical University in Prague date: 2005 words: 3397 flesch: 45 summary: We believe that the new courses on geoinformatics, with an intensive focus on the theoretical background, will help us to attract more talented students, who will be able to collabo- rate on software projects of a scientific nature, as described above. Calculus 1 1 Calculus 2 2 Technical geodesy 1 Constructive geometry 2 OS Linux 1 Foreign language 2 Foreign language 1 Technical geodesy 2 Introduction to law 1 keywords: czech; geodesy; geoinformatics; gps; information; program; project; software; study; technical; university cache: ap-790.pdf plain text: ap-790.txt item: #1393 of 1656 id: ap-7906 author: Segnon, Josué R.; Njoku, Howard O. title: Outdoor performance investigation of a thermoelectric cooler-integrated solar air heating collector date: 2024 words: 5535 flesch: 57 summary: [26] modelled the air cooling and water produc- tion using TE heat pumping and reported that by increasing the input power to the TE modules, the total cooling load increased but the system efficiency decreased significantly. Although TE heat pumping has been shown to im- prove the performance of heating/cooling systems, the existing literature for solar-TE cooling has focused on improving the electrical performance of PV modules, and no work, to date, extensively studied TE heat extraction from SAH’s absorber plate. keywords: absorber; air; collector; energy; figure; heat; plate; pumping; sah; solar; system; thermal cache: ap-7906.pdf plain text: ap-7906.txt item: #1394 of 1656 id: ap-7909 author: da Cruz, Daniel Magalhães; Clain, Fernanda Mazuco; Guilherme, Carlos Eduardo Marcos title: Experimental study of the torsional effect for yarn break load test of polymeric multifilaments date: 2022 words: 5538 flesch: 59 summary: 548 Acta Polytechnica 62(5):538–548, 2022 1 Introduction 2 Materials and methods 2.1 Multifilament materials and torsion conditions 2.2 Linear density test, Tex 2.3 Yarn Breaking Load test 2.4 Curve parameterization for optimal point 2.5 Relationship between optimum twist and linear density 3 Results and discussions 3.1 Linear density for multifilaments 3.2 Yarn Breaking Load for torsion groups 3.3 Determination of the optimal torsion group 3.4 YBL results for optimal torsion 3.5 Curve ratio for optimal torsion and Tex 4 Conclusions Acknowledgements References In addition to optimal torsion values, this conclusion is paramount, the test procedure makes a general recommendation that does not optimise the breaking strength. keywords: breaking; density; hmpe; linear; load; metre; polyamide; polyester; torsion; turns; twist cache: ap-7909.pdf plain text: ap-7909.txt item: #1395 of 1656 id: ap-792 author: Kuhlenkoetter, B. title: Development of a Robot System for Advanced High Quality Manufacturing Processes date: 2006 words: 2278 flesch: 37 summary: In the course of the project presented here, a new genera- tion of robot systems is originating that can process sensory feedback to surface errors, and can establish and carry out experience-based optimum error compensation strategies. (Fig. 4) 4 Optimized automation through innovative robot systems The developments presented below aim at raising the tol- erances of handling systems to changing conditions, and also their flexibility toward frequently changing workpieces in or- der to increase the reliability of the machines in the end and to expand the use of solutions involving industrial robots. keywords: fig; grinding; polishing; process; robot; system cache: ap-792.pdf plain text: ap-792.txt item: #1396 of 1656 id: ap-7939 author: Nogueira, Élcio title: Theoretical analysis of the influence of the chevron inclination angle on the thermal performance of a gasket plate heat exchanger date: 2022 words: 7112 flesch: 62 summary: They consider that the model can predict essential performance char- acteristics in plate heat exchangers concerning the dimensions, angles of inclination of the corrugations, etc. In addition to the physical and geometric parameters, the most significant influ- ence on obtaining the results are Reynolds number, inlet temperatures, and heat exchanger plates. keywords: angle; exchanger; fluid; heat; heat exchanger; heat transfer; model; number; plate; reynolds number; transfer cache: ap-7939.pdf plain text: ap-7939.txt item: #1397 of 1656 id: ap-794 author: Mamtani, G.; Green, G. title: Reliability Risk Evaluation during the Conceptual Design Phase date: 2006 words: 4048 flesch: 57 summary: Henceforth, 8 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 46 No. 1/2006 Czech Technical University in Prague Reliability Risk Evaluation during the Conceptual Design Phase G. Mamtani, G. Green Systematic evaluations of concept designs involve considering a range of criteria. Keywords: reliability, concept design. keywords: concept; design; function; method; reliability; seat cache: ap-794.pdf plain text: ap-794.txt item: #1398 of 1656 id: ap-7953 author: Khrabustovskii , Andrii; Znojil , Miloslav title: Analytic and Algebraic Methods in Physics date: 2022 words: 1023 flesch: 35 summary: For all of these reasons, the organizers of the AAMP series came to the conclusion that one of the possible reactions to the unpleasant current circumstances would be an enrichment of the internet-mediated standard 1 https://creativecommons.org/licenses/by/4.0/ https://www.cvut.cz/en Andrii Khrabustovskii, Miloslav Znojil Acta Polytechnica form of the meetings (in which one listens to talks for a few days, without having a real opportunity of discussing the subjects in the couloirs) via a return to an apparently obsolete practice of a subsequent preparation and publication of at least some of the talks in their written, more lasting and better accessible form, better suitable for the subsequent critical re-evaluation. Fortunately, every cloud has a silver lining: the related reduction of the capacity of the scientific communication channels led to the willingness of the participants to return to the recently almost abandoned tradition of complementing the Zoom-mediated meeting by a subsequent preparation of an AAMP-oriented Special Issue (SI) of Acta Polytechnica. keywords: aamp; physics cache: ap-7953.pdf plain text: ap-7953.txt item: #1399 of 1656 id: ap-796 author: Rehák, B. title: Design of a Predictive Hierarchical Controller Using FEMLAB date: 2006 words: 4651 flesch: 69 summary: ( )� �� �D j x t u t D f x t u t tx x � � � �0 � �D j x t u t D f x t u t tu u( ), ( ) ( ), ( ) ( )� with boundary conditions defined as follows: x T x T TH ( ) ( ) � � � 0 0� while the value of the state at the end of the interval (T, TH) and also the value of the co-state at time T are not defined. The matrices Q, R in the upper-level cost functional were chosen such that q1 � q2 � 10, r1 � r2 � 0.2. keywords: control; level; opt t; t t; u t; � � cache: ap-796.pdf plain text: ap-796.txt item: #1400 of 1656 id: ap-798 author: Drahovzal, O. title: Company Value, Real Options and Financial Leverage date: 2006 words: 1826 flesch: 63 summary: The value of volatility � can be determined directly from the company’s stock his- tory, or can be specified by the following formula: � � � � � �� � � � � � � � � � �( ) ( )1 2 12 2 2 0 2 0P P P PD A D D D A , (8) where �A, �0 are the standard deviations of the prices of shares and obligations, � is the correlation coefficient between them, and PD is the ratio of debt to total capital. The Black – Scholes formula for the call option is: C S N d X e N drt� � � � ��( ) ( )1 2 , (4) d S X r t t1 2 2 � � � � � � � � � � � � � � ln � � , (5) d keywords: company; debt; ratio; value; � � cache: ap-798.pdf plain text: ap-798.txt item: #1401 of 1656 id: ap-800 author: Saafan, M. A. A. title: Shear Strengthening of Reinforced Concrete Beams Using GFRP Wraps date: 2006 words: 6393 flesch: 58 summary: 5: Load-deflection curves for shear strengthened beams 0 10 20 30 40 50 0 2 4 6 8 10 Midspan deflection (mm) S10FP S10FU S10FR C10 Fig. 6: Load-deflection curves for shear strengthened beams expected. keywords: beams; capacity; composite; concrete; failure; flexural; reinforcement; shear; strengthening; � � cache: ap-800.pdf plain text: ap-800.txt item: #1402 of 1656 id: ap-802 author: Pekař, J.; Štecha, J. title: Identification and Predictive Control by p-norm Minimization date: 2006 words: 3825 flesch: 72 summary: x Ax b Ax b Ax b� � � � � � �� y y y y1 1 , (14) where 1 � [ , , , ]1 1 1� T is the unit vector. We are looking for the parameter vector � �x � a a b b T 1 2 0 1, , , , ,� � that ensures the best approximation of the output vector � �b � � � �y t y t y t m T( ), ( ), , ( )1 1� by a vector Ax, where A � � � � � � � � � y t y t u t y t y t u t ( ) ( ) ( ) ( ) ( ) ( ) 1 2 2 3 1 � � � � � � � � � � � � � . keywords: control; k �; norm; p �; r �; � y; � � cache: ap-802.pdf plain text: ap-802.txt item: #1403 of 1656 id: ap-804 author: Tesař, V. title: Similarity Solutions of Jet Development Mixing Layers Using Algebraic and 1-Equation Turbulence Models date: 2006 words: 11373 flesch: 57 summary: On the negative �ALG side there is a minimum u = 0 at �ALG � �1.846694. On the other side, the value u � 0.2 at point B is reached at �ALG � �0.8160231. keywords: d d; f �; fig; g �; layer; solution; thickness �; turbulence; u �; velocity; � alg; � d; � t; � w; � � cache: ap-804.pdf plain text: ap-804.txt item: #1404 of 1656 id: ap-806 author: Bokr, J.; Jáneš, V. title: Logical Structural Models with Multiplexors date: 2006 words: 2347 flesch: 72 summary: Since y � MX g , g , g , g( ),� �� � 0 1 2 3 we obtain y � � � � �� � � � � � � �� � � �2 4 2 2 4 5 2 4 50( ) ( ) ( ) ( )x x x x x and hence the structural model in Fig. i ( ) ( ) ( ) ( ) ( ) ( � � � � � � � � � 0 1 0 i �1) the validity of which can be easily confirmed by supplying 0 or 1 for xi. Let a dichotomy {X1, X0}be given on a set of X arguments x1, x2, , xm without loss of generality, such that X1 � {x1, x2, …, xn} and X0 � {xn�1, xn�2, …, xm}, where n hsv,norm, (5) where hsv,pd is the design headroom, hsv,dop is the cal- culated recommended minimum headroom, hsv,norm is the minimum headroom according to a technical standard or regulation. Keywords: Headroom, geometric accuracy, limit deviation, geometric accuracy deviation. keywords: accuracy; ceiling; design; deviations; headroom; minimum cache: ap-8335.pdf plain text: ap-8335.txt item: #1432 of 1656 id: ap-834 author: Lidmila, M.; Horníček, L.; Krejčiříková, H.; Tyc, P. title: Problems in Different Measuring and Assessment the Modulus of Deformation Using the Czech and German Methodologies date: 2006 words: 3113 flesch: 50 summary: 3: Static modulus of deformation being measured on a layer of sand in the Klíčany sand pit Field labelling Mean natural moisture content in % Mean modulus of deformation in MPa ČD methodology DB methodology Field No. 1 8.7 82.2 136.8 Field No. 2 5.5 38.7 67.4 Table 4: Moduli of deformation on sand for each methodology Field labelling Mean natural moisture content in % Mean modulus of deformation in MPa ČD methodology DB methodology Field No. 1 12.7 92.1 66.3 Field No. 2 15.8 56.0 45.6 Table 5: Moduli of deformation on soil for each methodology The correlation coefficients of the moduli of deformation on sand are given in Table 8 and on soil in Table 9. The value of the total mean plate insertion from the loading branch of the second cycle is en- tered in the chart with a simultaneous calculation of the modulus of deformation using general formula: E p r y � � 1 5. , where E is static modulus of deformation keywords: deformation; load; methodology; moduli; mpa; plate cache: ap-834.pdf plain text: ap-834.txt item: #1433 of 1656 id: ap-8344 author: Foria, Federico; Calicchio, Mario; Moretti, Laura; Loprencipe, Giuseppe title: Multidimensional mobile mapping and integrated approach for the digitalisation of underground transport infrastructure date: 2023 words: 6130 flesch: 44 summary: Keywords: MIRET, ARCHITA, mobile mapping, tunnel defects, railway tunnels. Analysis of predictive maintenance for tunnel systems. keywords: approach; data; defects; figure; images; infrastructure; inspection; lining; maintenance; management; mapping; mobile; railway; sector; survey; system; tunnel cache: ap-8344.pdf plain text: ap-8344.txt item: #1434 of 1656 id: ap-8348 author: Khantoul, Boubakeur; Bounames, Abdelhafid title: Exact solutions for time-dependent complex symmetric potential well date: 2023 words: 4555 flesch: 65 summary: In 2002, A. Mostafazadeh presented a more extended version of non-Hermitian Hamiltonians having a real spectrum, proving that the hermiticity of the Hamilto- nian with respect to a positive definite inner product, ⟨., .⟩η Real spectra in non-Hermitian Hamiltonians having PT symmetry. keywords: equation; hermitian; invariant; non; pseudo; time cache: ap-8348.pdf plain text: ap-8348.txt item: #1435 of 1656 id: ap-8351 author: Maharaj, Adhir; Leach, Peter G. L.; Govender, Megan; Day, David P. title: Linearisation of a second-order nonlinear ordinary differential equation date: 2023 words: 2461 flesch: 59 summary: In the search for solutions of differential equations, one discovers the beauty of the algebraic properties that the equations possess. Differential equations: Their solution using symmetries. keywords: differential; equation cache: ap-8351.pdf plain text: ap-8351.txt item: #1436 of 1656 id: ap-836 author: Baroňák, I.; Vozňák, M. title: CaC in ATM – the Diffuse Method date: 2006 words: 4533 flesch: 64 summary: In the same manner as for CFB we can derive CIB, during which time we start from relation (8), and we get CIB � � � �� � � � � 2 2 22 , (14) where the artificial variable is determined � �� � �2 2� �ln( ) ln( ). From relation (1) we obtain the quadratic equation ( ) ( )� � � � �� � � � �C C2 2 12 2 0, (10) where for the account we use artificial variables � � �� 2 2B (11) and � � �1 2� ln( ). keywords: cell; connections; diffuse; method; series; service; � � cache: ap-836.pdf plain text: ap-836.txt item: #1437 of 1656 id: ap-8360 author: Primus, Tomáš; Novák, Martin; Zeman, Pavel; Holešovský, František title: Femtosecond laser processing of advanced technical materials date: 2023 words: 6417 flesch: 59 summary: In spite of this fact, the volume ablation rate parameter could be useful for describing processes that need higher material ablation without regard to energy consumption. Accumulation effects in laser ablation of metals with high-repetition-rate lasers. keywords: ablation; figure; hatching; laser; materials; rate; removal; repetition; roughness; scanning; steel; structure; surface; ti6al4v cache: ap-8360.pdf plain text: ap-8360.txt item: #1438 of 1656 id: ap-8362 author: Kalús , Daniel; Koudelková, Daniela; Mučková, Veronika; Sokol, Martin; Kurčová, Mária; Šťastný, Patrik title: Parametric study of the energy potential of a building’s envelope with integrated energy-active elements date: 2022 words: 6077 flesch: 54 summary: The predetermination of these building structures for the application of renewable energy sources and waste heat represents an energy-secure and self-sufficient technical solution as a fully-fledged alternative to energy systems dependent on fossil fuels. Optimization of energy systems with long-term heat accumulation. keywords: building; energy; exterior; heat; heating; interior; k)−1; layer; pipes; structure; temperature cache: ap-8362.pdf plain text: ap-8362.txt item: #1439 of 1656 id: ap-8379 author: Kotsovou, Gregoria; Vougioukas, Emmanouil; Cotsovos, Demetrios M. title: Application of strut-and-tie models for assessing RC half-joints not complying with current code specifications date: 2022 words: 6261 flesch: 56 summary: However, the experiment established that failure was preceded by yielding and/or rupture, in the region of the re-entrant corner, of not only the three 12 mm diameter U bars comprising tie T1, but also the four 12 mm diameter diagonal bars comprising tie T2 and the two-legged 10 mm diameter link closest to the re-entrant corner; moreover, the specimen suffered horizontal splitting of concrete in the compressive zone in the region of the nib (see Figure 4) Therefore, failure of the STM can only occur due to a failure of the weakest of ties T1, T2 and T3 relative to the force expected to develop when the beam’s VEXP is attained. keywords: beam; figure; load; stm; tie cache: ap-8379.pdf plain text: ap-8379.txt item: #1440 of 1656 id: ap-838 author: Bíba, J.; Vokřínek, J. title: Multi-agent Contracting and Reconfiguration in Competitive Environments using Acquaintance Models date: 2006 words: 5855 flesch: 47 summary: 3.2 Contract setting An extension of levelled commitment contracts has been introduced by Excelente-Toledo et al. in [8]. Keywords: multi-agent systems, competitive environments, reconfiguration, decommitment, contract price, penalty. may consequently harm the others. keywords: agent; commitments; contract; contracting; costs; customer; environments; margin; profit; provider; reconfiguration cache: ap-838.pdf plain text: ap-838.txt item: #1441 of 1656 id: ap-840 author: Drahovzal, O. title: Supply Chain in Electro-Energetics and Real Options date: 2006 words: 1890 flesch: 55 summary: The Black-Scholes formulas for standard Euro- pean call and put options have the following form: C S N d X N drt� � � � ��( ) ( )1 2e (3) P S N d X N drt� � � � � � � ��( ) ( )1 2e (4) d S X r t t1 2 2 � � � � � � � � � � � ln � � (5) d The formula for calculating the value of the option to switch then has the following form: V P C� � (7) and the formula for calculating the total value of a connection has the following form: V V C n C t t n T E� � �� � 0 1 . keywords: deviations; electricity; price; � � cache: ap-840.pdf plain text: ap-840.txt item: #1442 of 1656 id: ap-8418 author: Diep, Hau Than; Nguyen, Gia Buu; Mohamad, Barhm title: Remapping and simulation of EFI system for SI engine using piggyback ECU date: 2023 words: 5790 flesch: 62 summary: The equation relates the engine MAF to the manifold gas pressure (MAP), engine speed, and in- take manifold gas temperature. 2/2023 Remapping and Simulation of EFI System for SI Engine Using Piggyback ECU mass flow rate (MAF), engine speed, and intake man- ifold gas temperature (IAT) from engine performance testing [16]. keywords: air; ecu; engine; figure; fuel; ignition; injection; load; pulse; simulation; speed; timing; width cache: ap-8418.pdf plain text: ap-8418.txt item: #1443 of 1656 id: ap-842 author: Havlíček, L. title: Financing of Liabilities Beyond the Service Life of Nuclear Installations date: 2006 words: 4833 flesch: 48 summary: When the first generation of nuclear power plants was built, nuclear liabilities were not taken into account and contributions to such a fund was not an organic part of product (electricity) price. Especially in countries where there was no clear border between the civilian and military nuclear program, past nuclear liabilities will have to be covered from the state budget. keywords: decommissioning; fuel; liabilities; liability; operator; plant; waste; � � cache: ap-842.pdf plain text: ap-842.txt item: #1444 of 1656 id: ap-8420 author: Ola, Samuel Akinlabi; Usifoh, Osemudiamen Ayoposi; Nnochiri, Emeka Segun title: The effects of potassium permanganate on the geotechnical properties of soils date: 2023 words: 5772 flesch: 53 summary: Keywords: Atterberg limits, California bearing ratio, kaolinitic soil, lateritic soil, potassium perman- ganate. [21], reported a reduction in bulk den- sity (which is related to specific gravity) in the analysis of potassium permanganate reactive soils. keywords: content; effects; increases; kmno4; limit; moisture; percentage; permanganate; potassium; potassium permanganate; soil cache: ap-8420.pdf plain text: ap-8420.txt item: #1445 of 1656 id: ap-8426 author: Lindh, Per; Lemenkova, Polina title: Utilising Pareto efficiency and RSM to adjust binder content in clay stabilisation for Yttre Ringvägen, Malmö date: 2023 words: 11939 flesch: 54 summary: Finally, to examine the variables important for soil stabilisation, we also evaluated the effect of the amount of binder and the interaction between cement/lime/slag in different ratios: 30-50-20 %; 50-50-0 %; 100-0-0 % The paper highlights the major opportunities and challenges of engineering statistics as a cross-cutting research direction for the issues of civil engineering. Despite widespread applications in civil engineering and extensive existing research, there are still some challenges in soil stabilisation, including the following: (1.) keywords: analysis; binders; ccd; cement; civil; clay; content; design; effects; engineering; figure; geotechnical; lime; methods; mixture; opc; results; soil; soil stabilisation; stabilisation; strength; water cache: ap-8426.pdf plain text: ap-8426.txt item: #1446 of 1656 id: ap-8428 author: Shete, Sangeeta; Joshi, Prasad title: Comparative study of state space averaging and PWM with extra element theorem techniques for complex cascaded DC-DC Buck converter date: 2023 words: 6493 flesch: 63 summary: Analytical techniques for DC DC converters and 1Φ inverters: A comprehensive review. Simplified analysis of PWM converters using model of PWM switch. keywords: circuit; complex; converter; figure; modelling; pwm; space; state; switch cache: ap-8428.pdf plain text: ap-8428.txt item: #1447 of 1656 id: ap-8432 author: Ďurica, Jakub; Sovjak, Radoslav; Boroš, Martin; Kuffa, Radoslav title: The effect of ambient temperature on the delay time of perimeter protection date: 2023 words: 3765 flesch: 58 summary: The six basic groups of perimeter security barriers are: • classic wire fencing, • security fencing, • high security fencing, • top barriers, • anti-scaling barriers, • entrances, driveways, and other units [26]. This type of test was chosen because perimeter security barriers are exposed to different thermal influences from the environment, either low minus temperatures or high plus temper- atures and the technical standard does not take this 322 vol. keywords: barriers; delay; perimeter; protection; security; system; temperature; test; time cache: ap-8432.pdf plain text: ap-8432.txt item: #1448 of 1656 id: ap-844 author: Lakkundi, V. title: Ultra Wideband Communications: History, Evolution and Emergence date: 2006 words: 1577 flesch: 52 summary: UWB radios are designed to use coherent wide-rela- tive-bandwidth propagation, which has no Rayleigh fading. Another chal- lenge is the need for the industry to agree upon common standards for interoperability of UWB devices. keywords: applications; communications; radar; technology; uwb; wideband cache: ap-844.pdf plain text: ap-844.txt item: #1449 of 1656 id: ap-8451 author: Kašpar , Ondřej; Kravcov, Alexander; Štoller, Jiří; Kubeček, Petr; Vnuk, Radovan; Zušťák, Zbyněk title: Estimation of stresses in a massive granite using laser ultra-sonic testing and stress memory effect date: 2023 words: 4625 flesch: 59 summary: However, since available archive materials do not have the level of detail that is required for a numerical simulation, the vertical stresses in the rock mass were calculated under the assumption that rock stress changes with depth as a result of geostatic load, according to which the expression for vertical stresses is as follows σ = ρ g h, (4) where habb is the depth. ISRM suggested methods for rock stress estimation – Part 2: overcoring methods. keywords: effect; emission; granite; methods; pb1; rock; situ; specimens; stress; stresses cache: ap-8451.pdf plain text: ap-8451.txt item: #1450 of 1656 id: ap-846 author: Málek, J. title: Bayesian Classifier for Medical Data from Doppler Unit date: 2006 words: 1302 flesch: 52 summary: For each class, selected signal features were extracted and then used for training a Bayesian classifier. 1.1 Classes Normal course – Signals acquired by an examination of arter- ies without peripheral arterial disease (PAD) – Fig. 1. Stenotic course – Signals measured in arteries with a stenotic diameter – Fig. keywords: classifier; data; features; signals cache: ap-846.pdf plain text: ap-846.txt item: #1451 of 1656 id: ap-8463 author: Belynda, Fares; Abdelli, Radia; Bouzida, Ahcene title: Stator current signal crossing for fault diagnosis of self-excited induction generators date: 2023 words: 7293 flesch: 56 summary: This method for diagnosing SEIG faults uses a synthetic signal con- taining information about the timing and amplitude of three-phase current crossings. This lower sideband frequency component of (1 − 2s)fs can be used for diagnosing rotor faults. keywords: circuit; current; fault; figure; frequency; induction; rotor; scsc; seig; self; signal; stator cache: ap-8463.pdf plain text: ap-8463.txt item: #1452 of 1656 id: ap-8466 author: Uher, Ondřej; Král, Michal; Cabrnoch, Bohuslav; Kruml, Josef title: The application of 3D printing technology in the design of sandwich panels date: 2024 words: 3223 flesch: 59 summary: In terms of implementation, it is possible to distinguish between two basic categories of inserts – hot bonded inserts and potted inserts. The subject of this paper are potted inserts. keywords: design; figure; inserts; printing; sandwich; test cache: ap-8466.pdf plain text: ap-8466.txt item: #1453 of 1656 id: ap-848 author: Mysliveček, O. title: A business process model as a starting point for tight cooperation among organizations date: 2006 words: 1208 flesch: 52 summary: Keywords: Business process management, business process model, outsourcing, joint venture, poster 2006. [1, 2, 4]. 3 Procedure for process outsourcing If a company has business process management already integrated into its management system, it has a very good starting point for successful outsourcing of its processes. keywords: business; process; processes cache: ap-848.pdf plain text: ap-848.txt item: #1454 of 1656 id: ap-8481 author: Naman, Hala A.; Abdelkareem, Ammar E. title: Self-interference cancellation in underwater acoustic communications systems using orthogonal pilots in IBFD date: 2023 words: 5665 flesch: 53 summary: Related works In this section, we cover the literature on communication channel models for multipath propagation and self-interference cancellation methods in full-duplex transmissions. SI channel model The channel coefficients and the magnitude channel impulse response, in seconds, for the Self node are generated based on the proposed modelr [20]. keywords: channel; communication; duplex; figure; interference; model; self; signal; system; underwater cache: ap-8481.pdf plain text: ap-8481.txt item: #1455 of 1656 id: ap-8497 author: Chand, Madhusmita; Paitandi, Mamoni; Gupta, Mahendra Kumar title: Qualitative sign stability of linear time invariant descriptor systems date: 2023 words: 5867 flesch: 64 summary: Matrix pairs which are stable, independent of their magnitudes with only sign information are denoted as Qualitative Sign Stable (QLSS) matrix pairs and Matrix pairs, whose stability/instability depend upon the magnitude information of the matrix pair elements, are denoted as Magnitude Dependent Stable/Unstable (MDS/U) matrix pairs. keywords: links; matrix; number; pair; qualitative; sign; stability cache: ap-8497.pdf plain text: ap-8497.txt item: #1456 of 1656 id: ap-850 author: Salinger, J. title: Measurement of Solar Cell Parameters with Dark Forward I-V Characteristics date: 2006 words: 2272 flesch: 60 summary: I A J e V R I kT A J e V R I DF S S � �� � �� � � � � � � � � 01 1 02 exp exp � �2 1 kT V R I R � � �� � � � � � � � � � S P , (1) where A stands for the area of the sample, J01 is diffusion current density, J02 is generation-recombination current den- sity, �1 and �2 are the diode factors, RS is the series resistance, RP is the shunt resistance, e is the electric charge, and k is the Bolzmann constant. The values of the shunt resistance at the highest tem- peratures were always lower than at room temperature (RT), but some differences were found: 26 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 46 No. 4/2006 P Fig: 1: Temperature dependence of shunt resistance RP of sam- ples #1942-02 (�), #20 (�) and LE2 (�) Fig. keywords: cell; charge; current; levels; � � cache: ap-850.pdf plain text: ap-850.txt item: #1457 of 1656 id: ap-8518 author: Awan, Muhammad Umer Farooq; Khan, Mahmood; Waheed, Khalid; Iqbal, Zafar; Rehman, Abdul; Ali, Fahad; Shahzad, Muhammad; Saim, Muhammad Abdul Basit; Akhtar, Shahid; Aune, Ragnhild Elizabeth title: Parametric optimisation of friction stir welding on aluminium alloy (EN AW-1100) plates date: 2023 words: 8000 flesch: 61 summary: Effect of tool rotational speed on the microstructure and mechanical properties of bobbin tool friction stir welded 6082-T6 aluminum alloy. [23] J. Victor Christy, A.-H. Ismail Mourad, M. M. Sherif, B. Shivamurthy. keywords: alloy; figure; friction; fsw; hardness; materials; parameters; probe; results; speed; stir; strength; tensile; tool; traverse; welding; zone cache: ap-8518.pdf plain text: ap-8518.txt item: #1458 of 1656 id: ap-8519 author: Cihla, Michal; Kovářová, Kateřina; Malát, Richard; Valach, Jaroslav; Kovářová, Kateřina title: Stone Topography – Useful Tool in Monuments Restoration Process date: 2022 words: 3510 flesch: 60 summary: The aim of this analysis is to identify tool traces, reconstruct the tools that produced them and outline the stone working process. Database of traces and reconstruction of historical stone tools. keywords: cihla; prague; stone; stonemason; surface; tool; topography; traces cache: ap-8519.pdf plain text: ap-8519.txt item: #1459 of 1656 id: ap-852 author: Spiertz, M.; Rusert, T. title: Central Decoding for Multiple Description Codes based on Domain Partitioning date: 2006 words: 2286 flesch: 59 summary: 2: Domain based MDC, qi � quantization error correspond- ing to a quantization interval �i 2.2 Reconstruction by linear superposition 5 shows that in the case of � �2 1 2 1� � � �k n k n, , � the linear superposition method gets worse than the highest rate method. keywords: decoder; fig; quantization; rate; � � cache: ap-852.pdf plain text: ap-852.txt item: #1460 of 1656 id: ap-8536 author: Farkas, Izabella Ingrid; Pelantová, Edita; Svobodová, Milena title: From positional representation of numbers to positional representation of vectors date: 2023 words: 9119 flesch: 71 summary: If addition in a matrix numeration system (M, D) with base M ∈ Zm×m and a finite digit set D ⊂ The numeration system is given by a square matrix base M ∈ Zm×m and by a finite set of digits D ⊂ Zm. keywords: addition; digit; matrix; number; parallel; set; system cache: ap-8536.pdf plain text: ap-8536.txt item: #1461 of 1656 id: ap-854 author: Stehle, T. title: Removal of Specular Reflections in Endoscopic Images date: 2006 words: 2835 flesch: 67 summary: ( ) W s i (10) Since we seek to minimize the error (8), the line pair we should select in the ith iteration is that which maximizes the energy reduction � ��E iF s�( )( ) , which can be calculated to � ��E i � Estimate �( )( )F s i , �( )( )F N s keywords: � � cache: ap-854.pdf plain text: ap-854.txt item: #1462 of 1656 id: ap-8540 author: Lakhdari, Meftah; Rabhi, Boualaga; Benaissa, Amar title: A new structural reconfiguration for multilevel inverters with fault tolerance capability date: 2024 words: 3016 flesch: 61 summary: Fault detection at three-level NPC inverters A diagnosing method for switch failures will be de- velop based on the analysis of electrical quantities with voltage characteristics. Three-phase 3-level NPC inverter with 12 voltage sensors for fault detection. keywords: case; circuit; fault; figure; inverter; leg; phase; tolerance cache: ap-8540.pdf plain text: ap-8540.txt item: #1463 of 1656 id: ap-8549 author: Litoš, Jiří; Šána, Vladimír; Uhlík, Adam; Kolář, Karel; Nguyen, Markéta title: Mechanical and physical properties of cement mixtures for 3D processing date: 2023 words: 4807 flesch: 55 summary: Thanks to a controlled and continuous hydration process, such mixtures retain a sufficient workability time and also have a rapid increase in initial, especially mechanical, properties. This production method has started to develop very fast, which brings the need to design a suitable composition of mixture for this tech- nology. keywords: cement; figure; materials; mixture; printing; processing; properties; strength; values cache: ap-8549.pdf plain text: ap-8549.txt item: #1464 of 1656 id: ap-856 author: Šimek, M. title: Embedded Operating System for MicroBlaze date: 2006 words: 2018 flesch: 55 summary: In the case of embedded systems, this allows an increasing amount of their functionality to be moved to software, instead of designing it as a pure hardware solution. Keywords: Embedded systems, operating systems, configurable HW, MicroBlaze. Fig. keywords: boot; file; kernel; microblaze; system; uclinux cache: ap-856.pdf plain text: ap-856.txt item: #1465 of 1656 id: ap-858 author: Valoušek, P. title: A Digital Loudspeaker: Experimental Construction date: 2006 words: 1352 flesch: 57 summary: A digital loudspeaker is a single device system which uses di- rect D/A conversion for digital audio signals. Keywords: Digital loudspeaker, signal processing, transducer array. keywords: array; digital; fig; loudspeaker; signal cache: ap-858.pdf plain text: ap-858.txt item: #1466 of 1656 id: ap-8590 author: Uher, Ondřej; Kruml, Josef; Král, Michal title: Verification of mechanical properties of forged moulding compound composite for small structural parts of microsatellites date: 2025 words: 3317 flesch: 63 summary: Calculated tensile modules for different lengths of reinforcement fibres. For detailed results of test samples see Tables 6 and 7. keywords: matrix; mould; reinforcement; samples; test cache: ap-8590.pdf plain text: ap-8590.txt item: #1467 of 1656 id: ap-8593 author: Menasri, Noureddine; Zergane , Said; Aimeur, Noureddine; Amour, Aissa title: 3D CFD model for the analysis of the flow field through a horizontal axis wind turbine (HAWT) date: 2023 words: 5497 flesch: 55 summary: [31] conducted a study on the aero- dynamic efficiency of wind turbine blades in a wind tunnel. The simulation results in this study, partic- ularly the analysis of pressure coefficients, provide valuable insights into the performance and design optimisation of wind turbine blades. keywords: analysis; axis; blade; cfd; design; energy; figure; flow; model; pressure; turbine; turbine blade; wind; wind turbine cache: ap-8593.pdf plain text: ap-8593.txt item: #1468 of 1656 id: ap-8599 author: Berrahou, Mohamed; Zahraoui, Mehdi; Hocine, Kamel; Djebbar, Samir; Guermit, Youcef; Benzineb, Hayet title: Influence of localised corrosion shape on adhesive damage and a bonded assembly under thermo-mechanical loading date: 2025 words: 6028 flesch: 59 summary: Stress corrosion cracking behaviour of 7xxx aluminum alloys: A literature review. Tensile property values as a function for different corrosion shapes. 3.2.3. keywords: adhesive; composite; confidence; corrosion; crack; figure; shape; square; stress cache: ap-8599.pdf plain text: ap-8599.txt item: #1469 of 1656 id: ap-860 author: Vítek, T.; Pachner, D. title: A Reservation Aggregation Framework Design for Demand Estimation date: 2006 words: 2615 flesch: 66 summary: The past indi- ces induce the following occupation and price aggregations for all elements of the ordered set Rp � � �� �r r R r ri � � � , (8) � �R r R r keywords: data; r r; reservations; time; � r; � � cache: ap-860.pdf plain text: ap-860.txt item: #1470 of 1656 id: ap-8601 author: Rahul, Amit Kumar; Singh, Manoj Kumar; Tiwari, Ravi; Paul, Sourabh; Rao, Pentyala Srinivasa; Biswas, Rohahn title: Semi-analytical approach-based studies of the squeeze film lubrication between rough porous annular discs: Rabinowitsch fluid model date: 2023 words: 8155 flesch: 63 summary: We can learn much more about porous roughness annular discs and unlock their potential to solve challenging problems across a range of industries by incorporating these research directions. Squeeze film behaviour in porous annular discs lubricated with magnetic fluid. keywords: discs; film; fluid; roughness; squeeze; surface cache: ap-8601.pdf plain text: ap-8601.txt item: #1471 of 1656 id: ap-8605 author: Flídr, Erik title: Derivation of entropy production in a fluid flow in a general curvilinear coordinate system date: 2023 words: 4548 flesch: 66 summary: Keywords: Entropy production, fluid flow, general curvilinear coordinates, linear blade cascade, experimental data. 2/2023 Derivation of entropy production in a fluid flow 4. keywords: entropy; equation; fluid; production; tensor cache: ap-8605.pdf plain text: ap-8605.txt item: #1472 of 1656 id: ap-8606 author: Semenov, Stanislav; Mikhailov, Evgeny; Kliuiev, Sergii; Dižo, Ján; Blatnický, Miroslav; Ishchuk, Vadym title: Improving the energy efficiency of a tram’s running gear date: 2023 words: 7735 flesch: 56 summary: Currently, the transport industry is faced with the urgent task of ensuring the energy efficiency of vehicles, including rail vehicles. Among several ways to create rail vehicles with competitive energy efficiency indicators, one of the most promising is the use of innovative bogie designs [17–21]. keywords: bogie; contact; design; energy; gear; movement; n·kn−1; rail; railway; resistance; running; track; tram; transport; vehicle; wheels cache: ap-8606.pdf plain text: ap-8606.txt item: #1473 of 1656 id: ap-8612 author: Royaei, Javad; Sadeghi, Kabir; Nouban, Fatemeh title: A comparative experimental investigation of high-temperature effect on fibre concrete and high strength concrete using UT and CM methods date: 2023 words: 4960 flesch: 50 summary: Finally, the summary of the comparison of the re- sults of compressive strength tests of concrete samples with a compression machine and the ultrasonic test is as follows in Figure 15. Based on the summary of the comparison of the re- sults of compressive strength tests of concrete samples with the compression machine and ultrasonic test, it Figure 14. keywords: concrete; error; machine; minutes; results; samples; strength; temperatures; test; ultrasonic cache: ap-8612.pdf plain text: ap-8612.txt item: #1474 of 1656 id: ap-862 author: Ritty, A. title: Directional Loudspeaker Using a Parametric Array date: 2006 words: 1575 flesch: 60 summary: He suggests that the sound pressure of secondary waves (ps) produced by the nonlinear interaction is �p c p t c p t s s p � � � 1 0 2 2 2 0 0 4 2 2 2 � � � � � � , (1) where pp is the sound pressure of primary waves, � is the non- linear coefficient, �0 is air density, and c0 is sound velocity. AP_06_4.vp 1 Headline of a section The nonlinearities of air cause high frequency wave components (primary waves) to interact. keywords: transducer; wave; � � cache: ap-862.pdf plain text: ap-862.txt item: #1475 of 1656 id: ap-8631 author: Al-Awad, Nasir Ahmed; Humaidi, Amjad Jaleel; Al-Araji, Ahmed Sabah title: Fractional multi-loop active disturbance rejection control for a lower knee exoskeleton system date: 2023 words: 7220 flesch: 51 summary: The definition of fractional calculus proposed by Caputo is widely used in fractional order control The general idea of FADRC1 for Exoskele- ton control system. to comprehensively estimate the un-modelled errors and external disturbances. keywords: adrc; control; controller; disturbance; exoskeleton; fadrc3; figure; fractional; journal; knee; observer; order; performance; rehabilitation; rejection; system cache: ap-8631.pdf plain text: ap-8631.txt item: #1476 of 1656 id: ap-864 author: Polyák, T. title: Robust Watermarking of Video Streams date: 2006 words: 1441 flesch: 65 summary: After this, there will be large 0 and 1 islands, so that during watermark detection the patterns can be more easily recog- nized, and the watermark will be more resistant to attack. Payload: different applications need watermarks of differ- ent sizes. keywords: algorithm; video; watermark cache: ap-864.pdf plain text: ap-864.txt item: #1477 of 1656 id: ap-866 author: Pourová, M.; Vrba, J. title: Microwave Drying of Textile Materials and Optimization of a Resonant Applicator date: 2006 words: 1828 flesch: 62 summary: Rela- 5 Acta Polytechnica Vol. 46 No. 5/2006 Fig. 5: Tools for optimizing the microwave dryer a) b) Fig. 6: Dependence of electric field strength on distance � and relative permittivity �tex (tg� � 0.566), 3D (a) and 2D (b) display of the quantities tive permittivity and loss factor are decreasing with decreas- ing water content. Also the complex permittivity of dried textile is not constant during the proce- dure. keywords: drying; fig; textile cache: ap-866.pdf plain text: ap-866.txt item: #1478 of 1656 id: ap-8664 author: Gök, Kadir; Danışmaz, Merdin; Urtekin, Levent; Ada, Hediye Deniz; Gök, Arif title: Investigation of the effect of elbow pipes of Ti6Al4V, 304 stainless steel, AZ91 materials on erosion corrosion by finite element analysis date: 2024 words: 3882 flesch: 54 summary: There are some studies in the literature on the corro- sion damage caused by the type of elbow pipe material that carries the fluid on the inner surface of the pipe. Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague INVESTIGATION OF THE EFFECT OF ELBOW PIPES OF TI6AL4V, 304 STAINLESS STEEL, keywords: corrosion; deformation; elbow; erosion; figure; flow; fluid; materials; modulus; pipe; shear cache: ap-8664.pdf plain text: ap-8664.txt item: #1479 of 1656 id: ap-8666 author: Hála, Petr; Hála, Petr; Šmejkal, Filip; Sovják, Radoslav title: Compression behaviour and failure mechanisms of a safety culvert made of hollow high-performance concrete blocks date: 2023 words: 9101 flesch: 64 summary: For concrete blocks, brick elements with a side length of approximately 35 mm and linear basis functions are used. Input parameters used with the fracture plastic constitutive model for concrete blocks. keywords: bearing; block; capacity; central; column; compressive; concrete; cracks; diameter; figure; load; opening; strength cache: ap-8666.pdf plain text: ap-8666.txt item: #1480 of 1656 id: ap-8672 author: Hadidi, Nacer; Bouaziz, Mohamed; Mahfoudi, Chawki; Zaharuddin, Mohamed title: Geometric approach to solving inverse kinematics of six DOF robot with spherical joints date: 2023 words: 8880 flesch: 66 summary: + ay.nz.sx + az.nx.sy − az.ny.sx) , s2 = −(a2.s3 − a3.s2) (ax.ny.sz − ax.nz.sy − ay.nx.sz + ay.nz.sx + az.nx.sy − az.ny.sx) , s3 = (n2.s3 − n3.s2) (ax.ny.sz − ax.nz.sy − ay.nx.sz + ay.nz.sx + az.nx.sy − az.ny.sx) , n1 = −(ax.sz − az.sx) (ax.ny.sz − ax.nz.sy − ay.nx.sz + ay.nz.sx + az.nx.sy − az.ny.sx) , n2 = (ax.sz − az.sx) (ax.ny.sz − ax.nz.sy − ay.nx.sz + ay.nz.sx + az.nx.sy − az.ny.sx) , n3 = −(nx.sz − nz.sx) (ax.ny.sz − ax.nz.sy keywords: angle; approach; cos; dof; effector; end; equation; figure; inverse; inverse kinematics; joint; kinematics; method; position; robot; sin; vectors; −−→ cache: ap-8672.pdf plain text: ap-8672.txt item: #1481 of 1656 id: ap-8679 author: Benbakreti, Samir; Benbakreti, Soumia; Ozkaya, Umut title: The classification of eye diseases from fundus images based on CNN and pretrained models date: 2024 words: 6607 flesch: 51 summary: Computer-aided diagnosis using deep neural networks is a promising approach, it can analyse and process retinal fundus images, providing valuable reference data for doctors in clinical diagnosis or screening. Keywords: Eye diseases classification, retinal fundus images, deep learning, pretrained models, SGDM. keywords: accuracy; classification; cnn; dataset; diseases; eye; fundus; images; learning; model; network; optimiser; resnet; results; training; vgg cache: ap-8679.pdf plain text: ap-8679.txt item: #1482 of 1656 id: ap-868 author: Kuhlenkötter, B.; Zhang, X.; Krewet, C. title: Quality Control in Automated Manufacturing Processes – Combined Features for Image Processing date: 2006 words: 3813 flesch: 57 summary: A large range of methods is introduced to present defect images. The challenge in our project now is to characterise and determine the type of defects from predefined categories and additional foulings (which are called pseudo-defects in our project) on the surface. keywords: classification; defects; features; fig; image; ratio; software; system cache: ap-868.pdf plain text: ap-868.txt item: #1483 of 1656 id: ap-870 author: Dolšak, B.; Novak, M.; Kaljun, J. title: Intelligent Support for a Computer Aided Design Optimisation Cycle date: 2006 words: 5549 flesch: 52 summary: It is becoming more and more evident that adding intelligence to existing computer aids, such as computer aided design systems, can lead to significant improvements in the effective and reliable performance of various engineering tasks, including design optimisation. Evidently, traditional design optimisation systems that concentrate on numerical aspects of design process are not successful in integrating numerical parts with human expertise [3]. keywords: analysis; computer; defects; design; knowledge; mesh; optimisation; process; system; user cache: ap-870.pdf plain text: ap-870.txt item: #1484 of 1656 id: ap-872 author: Caputo, F.; Gironimo, G. Di; Marzano, A. title: Ergonomic Optimization of a Manufacturing System Work Cell in a Virtual Environment date: 2006 words: 5085 flesch: 50 summary: PEI � � �I I I1 2 3 (1) At present various commercial systems are avail- able for ergonomic analysis of human posture and workplace design. keywords: analysis; body; design; ergonomics; human; method; pei; work; � � cache: ap-872.pdf plain text: ap-872.txt item: #1485 of 1656 id: ap-8720 author: Bencheriet, Chemesse Ennehar; Abdelmoumène, Hiba; Sebbagh, Abdennour; Yahiyaoui, Abdennour; Taba, Zahra title: Fake face detection based on a multi discriminator deep CNN architecture (MDD-CNN) date: 2023 words: 8052 flesch: 55 summary: Fake face images. Real face images. keywords: architecture; cnn; dataset; deep; deepfake; detection; discriminator; faces; figure; generator; images; learning; network; training; videos cache: ap-8720.pdf plain text: ap-8720.txt item: #1486 of 1656 id: ap-874 author: Sýkora, M. title: Advanced Load Effect Model for Probabilistic Structural Design date: 2006 words: 5938 flesch: 64 summary: Since the integration variable ��(0, �) in (19) is always positive, FT0on(�) is evaluated for values 0 � ��� � �. (10) Substitution of (3) and (10) into (7) leads to CDF FT0eff(t) F e e eeffT t t tt t t0 1 1 1( ) ( )� � � � � �� � �� �� � � . keywords: conditions; probability; process; t t; � p; � t; � � cache: ap-874.pdf plain text: ap-874.txt item: #1487 of 1656 id: ap-876 author: Stenzel, R.; Müller, L.; Herrmann, T.; Klix, W. title: Numerical Simulation of Nanoscale Double-Gate MOSFETs date: 2006 words: 2812 flesch: 65 summary: If equations (10) and (11) are neglected, i. e., for �p � �n � 0, the QHD model can be re- duced to the conventional hydrodynamic (HD) model. If the carrier temperatures are set to lattice temperature and equations (6) to (9) are neglected, the quantum drift diffusion (QDD) model and additionally for �p � �n � 0 the conven- tional drift diffusion (DD) model can be obtained. keywords: fig; gate; � � cache: ap-876.pdf plain text: ap-876.txt item: #1488 of 1656 id: ap-878 author: Poul, R.; Růžička, P.; Hanus, . D.; Blahouš, K. title: Design of Carbon Composite Driveshaft for Ultralight Aircraft Propulsion System date: 2006 words: 2072 flesch: 61 summary: Shaft version two did not take the need of low torsional stiffness into account. Following layups are designed for shafts version 2 and 3. keywords: composite; design; failure; shaft; version; � � cache: ap-878.pdf plain text: ap-878.txt item: #1489 of 1656 id: ap-880 author: Weiss, S.; Jänsch, J.; Birkhofer, H. title: Term Analysis – Improving the Quality of Learning and Application Documents in Engineering Design date: 2006 words: 3650 flesch: 60 summary: If one uses different termini to describe the same concept, the learner starts to look for differences in the properties and tries to set up a second category or concept. So, different termini can be treated as one and the Potential Term List is reduced again. keywords: concept; documents; list; termini; variations cache: ap-880.pdf plain text: ap-880.txt item: #1490 of 1656 id: ap-882 author: Zajíček, R.; Vrba, J.; Novotný, K. title: Evaluation of a Reflection Method on an Open-Ended Coaxial Line and its Use in Dielectric Measurements date: 2006 words: 2600 flesch: 49 summary: The dispersion magnitude is described as � � �� � �s . For distilled water, the dielectric constants are: � �� � 78.3, � �s � 4.6, � � � 8.07 ps, � �i � 2 S�m�1, � � � 0.014. keywords: frequency; measurement; method; permittivity; tissue; � � cache: ap-882.pdf plain text: ap-882.txt item: #1491 of 1656 id: ap-884 author: Zítek, P.; Vyhlídal, T.; Chyský, J. title: Experience of Implementing Moisture Sorption Control in Historical Archives date: 2006 words: 4669 flesch: 45 summary: It is easy to prove that the temperature ratios in (4) are close to one, even if there are substantial differences in B. Consequently the humidity logarithm ratios are also close to one and therefore the re- quired humidity readjustments �M � �0 and �N � �0 have rather low values and cannot differ from each other substan- tially. [5], are used to describe the relationship be- tween EMC as u, and the pair of air temperature T and rela- tive air humidity �, u � �(�, T). keywords: air; content; control; humidity; moisture; sorption; temperature; � � cache: ap-884.pdf plain text: ap-884.txt item: #1492 of 1656 id: ap-886 author: Jokl, M. V.; Kabele, K. title: Optimal (Comfortable) Operative Temperature Estimation Based on Physiological Responses of the Human Organism date: 2006 words: 6033 flesch: 60 summary: � � � � �9 07 7 5 157 W�m�2 ��, G q T Tt,m, m i sk min . . � � � � � � �157 366 305 96 2 , i.e. �4.8 W�m�2, where G G Gtt,i, t, i, t,m,min min min . . . keywords: body; fig; heat; temperature; values; � � cache: ap-886.pdf plain text: ap-886.txt item: #1493 of 1656 id: ap-888 author: Kalvoda, L.; Klepáček, R. title: Extraction of Alkali Ions Investigated by Conductometric and pH Measurements date: 2006 words: 2463 flesch: 53 summary: The following stability constants were calculated from the obtained conductivity data, using relation (2): KNa� � 7.3×10�7, KK� � 6.5×10�8, KCa2� � 1.6×10�5, KMg2�: no measurable reaction. CA OCH COOEt H Cl CA OCH COOH EtCl� � � � � � � � 2 2 . keywords: concentration; fig; solutions; tbt; water; � � cache: ap-888.pdf plain text: ap-888.txt item: #1494 of 1656 id: ap-890 author: Makovička, D. title: Response Analysis of an RC Cooling Tower Under Seismic and Windstorm Effects date: 2006 words: 3035 flesch: 53 summary: The starting values of the Winkler-Pasternak constants were selected as follows: C1z � 3.5 MN/m3, C1x � C1y � 2.0 MN/m3, C2x � C2y � 50 MN/m. The temperature of the inter- nal columns and is unaffected by temperature fluctuations in the operation process; therefore these members are left without temperature load. keywords: load; structure; temperature; towers; walls; wind cache: ap-890.pdf plain text: ap-890.txt item: #1495 of 1656 id: ap-892 author: Rieger, F. title: Determination of Rheological Parameters from Measurements on a Viscometer with Coaxial Cylinders – Choice of the Reference Radius date: 2006 words: 1167 flesch: 65 summary: The shear stresses and shear rates related to radius Rr can be calculated from experimental values �1 and ��1N using the following relations � �r r R R � � � � � � � 1 1 2 , (7) � � �� � �r r r R RN N� � � � � � � � 1 1 2 (8) 3) If the logarithmic plot of shear stress �r on shear rate �� r is linear, the consistency coefficient K is �-intercept and flow index n is the slope of a straight line. keywords: � � cache: ap-892.pdf plain text: ap-892.txt item: #1496 of 1656 id: ap-894 author: Elnagahy, F. I. Y.; Haroon, A. A.; Azzam, Y. A.; Alawy, A. El-Bassuny; Elminir, H. K.; Šimák, B. title: Embedded Coding of Astronomical Images date: 2006 words: 3482 flesch: 60 summary: The subjective quality tests show that RPSWS reconstructed images are better than SPIHT reconstructed images at lower bit rates, as shown in Fig. At higher bit rates there are no significance differences in the visual qualities of the SPIHT and RPSWS reconstructed images. keywords: band; bit; coding; images; rpsws; spiht; sub; wavelet cache: ap-894.pdf plain text: ap-894.txt item: #1497 of 1656 id: ap-896 author: Bořil, H.; Fousek, P. title: Influence of Different Speech Representations and HMM Training Strategies on ASR Performance date: 2006 words: 2432 flesch: 63 summary: Are the best models for neutral speech also the best for Lombard speech? HMMs tested with neutral speech appear to converge much earlier than with Lombard speech. keywords: features; lombard; mfcc; plp; speech; training cache: ap-896.pdf plain text: ap-896.txt item: #1498 of 1656 id: ap-898 author: Soliman, Hussein F.; Attia, Abdel-Fattah; Mokhymar, S. M.; Badr, M. A. L. title: Fuzzy Algorithm for Supervisory Voltage/Frequency Control of a Self Excited Induction Generator date: 2006 words: 4967 flesch: 68 summary: qr qs dr ds� � � �( ) ( ) 16: Dynamic response of duty cycle for PI with and without FLC Fig. 17: Suddenly variation for the wind speed versus time Appendix SEIG differential equations at no load vds Stator Voltage (volt) Differential Equation at Direct Axis v R i ps b b ds ds qs ds� � � � �� � �� � � �� � �� � � � � � , (1) vqs Stator Voltage Differential Equation at Quadrate Axis v R i ps b b qs qs ds qs � � � � �� � �� � � � � � � � � � � � � , keywords: controller; fig; flc; frequency; value; voltage; wind; � � cache: ap-898.pdf plain text: ap-898.txt item: #1499 of 1656 id: ap-900 author: Prajzler, V.; Burian, Z.; Hüttel, I.; Špirková, J.; Hamáček, J.; Oswald, J.; Zavadil, J.; Peřina, V. title: Properties of Erbium and Ytterbium Doped Gallium Nitride Layers Fabricated by Magnetron Sputtering date: 2006 words: 3657 flesch: 57 summary: GaN films grown using the Ga2O3 target at room tem- perature had an amorphous structure, while GaN films fabri- cated using the Ga target at room temperature had poly- crystalline structure (According to the literature, GaN layers fabricated at an elevated temperature (above 800 °C) can have a single crystalline structure For erbium and ytterbium doping into GaN layers, erbium metallic powder and ytterbium powder or Er2O3 and Yb2O3 pellets were laid on the top of the target. keywords: erbium; gan; layers; target; vol; ytterbium cache: ap-900.pdf plain text: ap-900.txt item: #1500 of 1656 id: ap-902 author: Bíla, J.; Jura, J. title: Fuzzy Concepts in the Detection of Unexpected Situations date: 2007 words: 5101 flesch: 63 summary: The following subsections introduce three examples of MSS and MSF and MD(UX3). 3.2 MD(UX3) with an emergence zone MSS has (in this case) the form (6) MSS S M S� � � �� � � , ( ), , , ( , ( ( , ) ))s s� � , (6) where S represents a basic set of situations, M(S) is a matroid constructed on this set of situations, � is a Basis on M(S), � represents a Cover on M(S) (a subset of the matroid closure), �( , )s � is a metric function and � is a positive real number. 1): h g of h g of1 1 1 1� �, ,� � n n (1) This brief explanation of essential concepts for the theory of UX3 situations introduced above will be extended and supplemented by a formal description and a recent applica- tion of this theory in section 3. keywords: detection; model; msf; mss; situations; system; ux3; � p; � � cache: ap-902.pdf plain text: ap-902.txt item: #1501 of 1656 id: ap-9034 author: Butt, Adnan Qayyum; Tayyaba, Qanita; Raza, Muhammad Ali; Rehman, Abdul; Khan, Tayyab Ali; Shahzad, Muhmmad title: Parametric optimisation of laser welding of stainless steel 316L date: 2024 words: 6229 flesch: 60 summary: The importance of laser welding is increasing tenfold in industry due to the higher spectrum of energy available in laser welding operations Effect of laser welding parameters on fusion zone shape and solidification structure of austenitic stainless steels. keywords: beam; figure; heat; laser; laser welding; materials; model; parameters; power; process; stainless; steel; welding; width; zone cache: ap-9034.pdf plain text: ap-9034.txt item: #1502 of 1656 id: ap-9037 author: Schulze-Halberg, Axel title: Construction of angular-dependent potentials from trigonometric Pöschl-Teller systems within the Dunkl formalism date: 2023 words: 10055 flesch: 70 summary: − 2 [ν1 tan(ϕ) − ν2 cot(ϕ)] Φ′(ϕ) + [ m2 − ν1(1 − r1) cos(ϕ)2 − ν2(1 − r2) A = λ + α + (1 + 2ν1 + 2ν2 + 2ν3)2 4 , (33) B = 1 4 − m2 − (ν1 + ν2)2 + β 4 , (34) C = (r3 − ν3)ν3 − γ . keywords: darboux; equation; potential; transformation cache: ap-9037.pdf plain text: ap-9037.txt item: #1503 of 1656 id: ap-904 author: Siegel, J.; Kotál, V. title: Preparation of Thin Metal Layers on Polymers date: 2007 words: 1616 flesch: 68 summary: The surface energy of plasma treated polymers can easily be examined by mea- suring the contact angles. A crucial role in preparing metal layers on polymers is played by the interface properties between substrate and deposited metal. keywords: fig; pet; plasma; surface cache: ap-904.pdf plain text: ap-904.txt item: #1504 of 1656 id: ap-906 author: Martinez, M. Herrera title: Evaluation of Audio Compression Artifacts date: 2007 words: 2667 flesch: 53 summary: Coding signals with a strongly aperiodic character, called “attack signals” or “signals with transient behaviour” lead to an artifact known as preecho. Higher levels of signal decomposition, of course, will give more accurate representations of the audio signal, in a similar manner as higher frequency resolution improves the accuracy of the frequency representation of the signal in FFT. DWT, then, has a hierarchical structure in which the higher the level that the decomposition affords, the longer the hierarchical DWT tree. keywords: audio; coding; decomposition; signal; transient; wavelet; � � cache: ap-906.pdf plain text: ap-906.txt item: #1505 of 1656 id: ap-9064 author: Radnic, Tomáš; Šafařík, Pavel; Luxa, Martin; Šimurda, David title: Shock wave configuration in a transonic flow through a mid-section of a last stage turbine blade cascade equipped with a part-span connector date: 2023 words: 3435 flesch: 67 summary: Keywords: Transonic flow, blade cascade, part-span connector, numerical simulation, shock wave, steam turbine. Therefore, the tie-boss is expected to have a profound effect on the configuration of shock waves. keywords: blade; boss; flow; shock; shock wave; tie; waves cache: ap-9064.pdf plain text: ap-9064.txt item: #1506 of 1656 id: ap-9075 author: Poliak, Martin; Franek, Michal; Gregorová, Jana title: Simulation of wind flow around an alternative flat-roofed fortress tower ruin date: 2025 words: 9297 flesch: 70 summary: × 10−4 −5 % −1.67 × 10−4 −11 % 2.68 × 10−5 0 % D3 2.16 × 10−3 20 % −6.61 % D1 0.601 −100 % 0.04 25 % 0.046 −9 % 0.078 −24 % D2 0.113 −19 % 0.029 18 % 0.089 −18 % 0.077 −23 % D3 0.037 −6 % 0.021 13 % 0.071 −15 % 0.055 −17 % D4 0.016 −3 % 0.015 10 % 0.062 −13 % 0.046 −14 % D5 −0.007 1 % −0.001 −1 % 0.017 −3 % 0.011 −3 keywords: alternative; changes; cpe; flow; head; mean; model; roof; ruin; ruin model; surface; table; values; wind cache: ap-9075.pdf plain text: ap-9075.txt item: #1507 of 1656 id: ap-908 author: Pastor, O. title: Indirect Determination of the Risk of Transportation Projects date: 2007 words: 2161 flesch: 49 summary: The basic blocks for assessing transportation projects can comprise: Direct demand of users: This paragraph analyses the benefit of the implemented project for the user. No. 1/2007 Indirect Determination of the Risk of Transportation Projects O. Pastor This paper deals with indirect determination of the risk of transportation projects. keywords: development; efficiency; locality; project cache: ap-908.pdf plain text: ap-908.txt item: #1508 of 1656 id: ap-9086 author: Dudnik, Vitaly title: Reduction of torque pulsation in ultralight helicopter transmission date: 2024 words: 2596 flesch: 54 summary: Keywords: Ultralight helicopter, piston engine, torque pulsation. Torque pulsation on the engine shaft The traditional methods of reducing engine torque variance are to increase the number of cylinders and ensure that the spark ignition in the cylinder alter- nates evenly. keywords: engine; helicopter; pulsation; rotor; shaft; torque cache: ap-9086.pdf plain text: ap-9086.txt item: #1509 of 1656 id: ap-910 author: Pastor, O.; Novotný, P.; Melechovský, J. title: Support for Expert Estimations in Transportation Projects date: 2007 words: 1122 flesch: 39 summary: Subjective probabilities have to be applied at this preparatory stage of transportation project. Even in this scheme of application of the Monte Carlo method, subjective probabilities have to be used. keywords: probabilities; project; risk cache: ap-910.pdf plain text: ap-910.txt item: #1510 of 1656 id: ap-912 author: Popelová, L. title: The Symbolic-Aesthetic Dimension of Industrial Architecture as a Method of Classification and Evaluation: the Example of Bridge Structures in the Czech Republic date: 2007 words: 5114 flesch: 61 summary: 7 Conclusion This paper is a contribution in support of a criterion that will systematically evaluate industrial structures, including bridge structures, from a symbolic-aesthetic perspective. Industrial structures from the Czech Republic are used as examples, and a specific analy- sis is made of two bridges. keywords: aesthetic; architecture; bridge; buildings; czech; fig; prague; structures; svatopluk; technical; water; works cache: ap-912.pdf plain text: ap-912.txt item: #1511 of 1656 id: ap-9134 author: Jaskulski, Roman; Kubissa, Wojciech; Zapała, Dominika title: Influence of carbonation on torrent air permeability of concrete date: 2023 words: 4617 flesch: 54 summary: kT5,t = kTm,m · e1.45(m−5), (1) kTm,t = kT5,t / e−1.45(m−5), (2) where: • m ... measured moisture content of concrete (in %), • kTm,m ... measured air permeability of concrete with moisture content equal to m % (before carbon- ation), • kT5,t ... theoretical air permeability of concrete with moisture content equal to 5%, • kT5,m ... theoretical air permeability of concrete with moisture content equal to m %. Keywords: Concrete, carbonation, air permeability, durability, torrent. keywords: air permeability; carbonation; concrete; content; moisture; permeability; results; test; values cache: ap-9134.pdf plain text: ap-9134.txt item: #1512 of 1656 id: ap-914 author: Martinez-Val, R. title: Flying Wings. A New Paradigm for Civil Aviation? date: 2007 words: 7750 flesch: 63 summary: The present paper discusses the main features of flying wings, their advantages over conventional competitors, and some key operational issues, such as evacuation and vortex wake intensity. This paper discusses the main features of flying wings and blended wing bodies, their advantages over conventional competitors, and some key operational issues, such as airport operation, evacuation, and vortex wake intensity. keywords: aircraft; airplanes; aviation; body; cabin; cruise; design; fig; flying; fuel; lift; range; size; vol; wing; � � cache: ap-914.pdf plain text: ap-914.txt item: #1513 of 1656 id: ap-916 author: Dunne, G. V. title: Functional Determinants for Radially Separable Partial Differential Operators date: 2007 words: 5515 flesch: 68 summary: Thus, for � � � � �� � �( ) ( ) ( )0 0 0f as , we only actually need to subtract the lead- ing large l terms in (29), rather than the full asymptotics in (27). I kr K kr � � � � � � �d V r rl ik r ( ) ( ).( ),� �� 0 (25) leads to an iterative expansion for f ikl( )in powers of the po- tential V(r). keywords: d �; function �; s �; � f; � l; � m; � m2; � r; � � cache: ap-916.pdf plain text: ap-916.txt item: #1514 of 1656 id: ap-917 author: Fischer, M.; Mlček, M.; Konvičková, S.; Kittnar, O. title: Computer Insight into the Molecular Level of Heart Failure. What is the Role of NCX? date: 2008 words: 4290 flesch: 54 summary: [8] as � � � � � � I t k t According to some findings that report NCX activity in failing hearts [11], the NCX activity was varied between 50, 75, 100 and 130 % of normal activity. keywords: activity; ca2; calcium; fig; heart; ncx; vol; � � cache: ap-917.pdf plain text: ap-917.txt item: #1515 of 1656 id: ap-918 author: Znojil, M. title: PT-symmetric Quantum Chain Models date: 2007 words: 4992 flesch: 65 summary: It is again unique because one of the two rootsC� � �27 9 21 of the “first alternative” Gröbnerian “effective” equation C C2 54 972� � and both the roots � �354 60 34 of the “sec- ond alternative” equation C C2 708 2916 0� � � are negative, while the only remaining positive root C� � 68 24318125. In the context of the so called Dyson-mapping approximation technique, for exam- ple, it was originally felt as an unpleasant surprise that the requirement of the smallness of the dimension of the matrix H(eff ) emerged in an apparently inseparable combination with the necessity of moving to a less standard Hilbert space H(physical) of states where the definition of the inner (“scalar”) product between elements � � H(physical) and � � H(physical) had to be modified, � � � �� � �� � �, † 0 (1) This trick very easily extends the applicability of the for- malism of standard textbook Quantum Mechanics by the transition to the various nontrivial, “non-Dirac” metric operators. keywords: b �; domain �; eep �; j �; m �; � -symmetry; � � cache: ap-918.pdf plain text: ap-918.txt item: #1516 of 1656 id: ap-9186 author: Nápravník, Petr; Kocáb, Dalibor; Bílek, Jr., Vlastimil; Lisztwan, Dominik; Kucharczyková, Barbara title: Monitoring the internal structure behaviour of alkali-activated slag paste: effect of the curing mode date: 2023 words: 5614 flesch: 56 summary: For the purposes of the experiment, three test sets (for the measurement of resonant frequencies and mass losses) and nine additional test sets (for strength tests) were made, each set containing three specimens. Experiment details Three groups of test specimens from alkali-activated slag differing only in the curing regime were prepared for this experiment. keywords: age; cracks; days; decrease; development; paste; set; slag; specimens; strength; test cache: ap-9186.pdf plain text: ap-9186.txt item: #1517 of 1656 id: ap-9188 author: Souček, Jiří; Bílková, Eva; Nowak, Petr title: Reverse engineering of pump as turbine for CFD analysis date: 2024 words: 4072 flesch: 57 summary: In this way, the turbine power, or turbine efficiency, was calculated (Table 1). Development and implementation of a methodology for reverse engineering design of Francis turbine runners. keywords: cavitation; cfd; efficiency; engineering; figure; model; parts; pressure; pump; runner; turbine cache: ap-9188.pdf plain text: ap-9188.txt item: #1518 of 1656 id: ap-920 author: Balková, L’. title: Return Words and Recurrence Function of a Class of Infinite Words date: 2007 words: 5303 flesch: 78 summary: For b �1and 2 3� �a , then it holds for l(k), k � �, l a( )1 1� � , l( )2 5� , l k n a( ) ( )� � 10 , for S k Sn n 1 0 11 1 0 0( ) ( )( , ) ( , )� � � , n � �, l k n( ) ( )� � 00101 for S k Sn n 0 1 1 10 0 1 1( ) ( )( , ) ( , )� �� � , n � �. A factor w u� �( ) is called singular if w �1 or if there exist a word v u� �( ) and letters x x y y, , ,� � �� such that w xvy� , x x� �, y y� �, and � � �x vy xvy u, ( )� . keywords: b �; u �; words; � � cache: ap-920.pdf plain text: ap-920.txt item: #1519 of 1656 id: ap-9205 author: Amiri, Human; Küçük, Umut Can; Kuşcu, Yiğit Fırat title: Experimental investigation of flow characteristics and performance parameters of a podded aft engine air intake date: 2023 words: 7251 flesch: 61 summary: Air intake performance Inlet flow performance indicators, which are analysed in this study, are as follows: a) Total pressure recovery, b) total pressure distortion, c) mass flow ratio. Among the aeronautical engineers, this metric is known as total pressure distortion and is expressed either circumferentially or radially. keywords: aip; aircraft; aoa; configuration; distortion; engine; figure; flow; inlet; intake; mass; model; nozzle; pressure; total cache: ap-9205.pdf plain text: ap-9205.txt item: #1520 of 1656 id: ap-9208 author: Kaiser, Mohammad Salim; Hossain, Al-Kabir title: Effect of surface area on the wear properties of Al-based automotive alloy and the role of Si at eutectic level date: 2024 words: 6778 flesch: 61 summary: Thus, for a longer engine life, alloys with higher wear properties are required. A microstructural study confirms a lower abrasive wear with a minor plastic deformation on the worn surfaces of Si added alloy and wear with higher contact surface. keywords: alloy; coefficient; contact; figure; friction; materials; properties; sliding; specimens; surface; wear cache: ap-9208.pdf plain text: ap-9208.txt item: #1521 of 1656 id: ap-922 author: Sergyeyev, A. title: Flat Coordinates and Hidden Symmetry for Superintegrable Benenti Systems date: 2007 words: 376 flesch: 59 summary: Phys. 48 (2007), 052114. Keywords: superintegrability, Benenti system, Schrödinger equation, Hamilton-Jacobi equation, separation of variables. In this talk I present the results from my paper Exact solvability of superintegrable Benenti systems, J. Math. keywords: � � cache: ap-922.pdf plain text: ap-922.txt item: #1522 of 1656 id: ap-9220 author: Drizdal, Tomas; Novak, Marek title: Application of an artificial intelligence segmentation for deep hyperthermia treatment planning in the pelvic region date: 2023 words: 4318 flesch: 45 summary: SAR volume cumulative histograms of pancreas and whole patient model for complete seg- mentation model (organs) and for model with organs assigned as muscle (muscle). from complete segmentation model including internal organs. |dTHQ| = ∣∣∣∣ (THQmuscle − THQorgans THQorgans ) ∣∣∣∣ × 100 (1) where |THQmuscle| is the THQ value obtained using muscle patient model and |THQorgans| value obtained 0 25 50 75 100 norm. keywords: antenna; htp; hyperthermia; journal; model; muscle; organs; patient; region; segmentation; treatment cache: ap-9220.pdf plain text: ap-9220.txt item: #1523 of 1656 id: ap-9228 author: Hussein, Mohammed Abdulshareef; Jassim, Hassan Kamil; Jassim, Ali Kareem title: An innovative iterative approach to solving Volterra integral equations of second kind date: 2024 words: 5728 flesch: 76 summary: Volterra integral equations of the second kind are a set of integral equations with the general form: u(x) Keywords: Volterra integral equations, new iterative method, Taylor series, Hussein Jassim method. keywords: equation; x=0 cache: ap-9228.pdf plain text: ap-9228.txt item: #1524 of 1656 id: ap-923 author: Matoušek, V. title: Effect of the Hydraulic Characteristics of a Stream Channel and its Surroundings on the Runoff Hydrograph date: 2008 words: 9176 flesch: 62 summary: Thus, the two hydrographs that should be compared with each other are the hydrograph caused by rainfall of 20 mm and 30 min for the existing channel (Fig. 12) and the hydro- graph caused by rainfall of 25 mm and 60 min for the pro- posed natural channel (Fig. 13). The downhill directed drills created small natural channels that drained the field during the rainfall event and increased the direct runoff and its velocity. keywords: channel; flood; flow; rainfall; runoff; time; water; watershed; � � cache: ap-923.pdf plain text: ap-923.txt item: #1525 of 1656 id: ap-924 author: Masáková, Z.; Pelantová, E. title: Self-Matching Properties of Beatty Sequences date: 2007 words: 3143 flesch: 84 summary: Since �� is a quadratic unit, � �� �� is a ring and, moreover, it satisfies � � � �� � � �� � �� � (6) A cut-and-project set is the set of projections of points of �2 to V1, that are found in a strip of given bounded width, parallel to the straight line V1. Among the simple properties of the cut-and-project sets that we use here are � � � �( ) ( ) � 1 1 , � �� �� � � �( ) ( ), where the latter is a consequence of (6). keywords: b �; j �; k �; � m; � � cache: ap-924.pdf plain text: ap-924.txt item: #1526 of 1656 id: ap-9255 author: Chalmovský, Juraj; Račanský, Václav; Koudela, Pavel; Zdražil, Karel title: The load-transfer method as a tool for determining the load-displacement curve of piles date: 2024 words: 4404 flesch: 65 summary: Development of axial pile load transfer curves based on instrumented load tests. The action of soft clay along friction piles. keywords: displacement; figure; friction; load; loading; method; piles; shaft; tests; transfer cache: ap-9255.pdf plain text: ap-9255.txt item: #1527 of 1656 id: ap-9258 author: Yusuf, Taofeek Ayotunde; Aodu, Sheriff Abiodun; Alabi, Abeeb Opeyemi title: Acoustic Radiation Patterns of Different Polygon Piston Surfaces date: 2024 words: 8031 flesch: 71 summary: Meanwhile, acoustic pistons with flat surfaces such as polygons have more prospects in providing a more compact transducer structure [20]. The beam pattern of polygonal piston surfaces of equal surface area with a circular piston of different diameters. keywords: beam; circular; equation; figure; k sin; piston; sec; sin θ; surface; tan cache: ap-9258.pdf plain text: ap-9258.txt item: #1528 of 1656 id: ap-926 author: Burdík, Č.; Navrátil, O.; Pošta, S. title: Structure of the Enveloping Algebras date: 2007 words: 5891 flesch: 64 summary: If we want to study all two-sided ideals of the associative algebra U (see [1] chapters 6–10), i.e. to find all the vector spaces I U� which satisfy for all a b U aIb I, :� � we can easily see that such a two-sided ideal is invariant with respect to adjoint action of U: if we take adjoint action � : ( )g L U� , i.e. �( ) [ , ]x a x a� for x g� and a U� and extend this definition to all U by � �� �� � �( ) ( ) ( ) , , [ , ]u x x x x an n� �1 1� � � for all u x x x gn i� �1� , we see that �( ) The simplest example – algebra sl(2) Let us have algebra sl(2) which is a complex linear span of three vectors E E H E E12 21 1 11 22, , � � , where by Eij we denote the matrix having 1 in position (i, j) and 0s elsewhere. keywords: x f; � det; � f; � k; � x; � � cache: ap-926.pdf plain text: ap-926.txt item: #1529 of 1656 id: ap-9271 author: Pruška, Jan; Šedivý, Miroslav; Anderle, Vojtěch title: Problems with reinforced concrete industrial floors with regard to subsoil swelling date: 2024 words: 4814 flesch: 57 summary: In the pres- ence of swelling soils in the subsoil, the floors can be shifted upwards by centimeters and open cracks may form after the work has been carried out. Direct measurement of swelling soils – multiple methods are used here and generally require the use of special equipment. keywords: concrete; content; floors; layer; moisture; prediction; pressure; soil; subsoil; swelling; thickness cache: ap-9271.pdf plain text: ap-9271.txt item: #1530 of 1656 id: ap-928 author: Shapiro, B.; Tater, M. title: Root Asymptotics of Spectral Polynomials date: 2007 words: 2375 flesch: 75 summary: i n i, , , , , , ,� � � �� � �1 1 1 2 , with a i n i Because sk are related to pl by s p s k pk n l k l n k l k � � �� � � � � 0 1 1 we need explicit expressions for pl up to l n k� � . keywords: c �; e �; k �; � � cache: ap-928.pdf plain text: ap-928.txt item: #1531 of 1656 id: ap-9286 author: Nathgosavi, Kiran; Joshi, Prasad title: Enhancement of power transfer capacity of transmission network using multilevel multifunction inverter date: 2023 words: 5830 flesch: 60 summary: https://doi.org/10.1109/TPEL.2008.2008441 [7] P. Rao, M. L. Crow, Z. Yang. STATCOM control for power system voltage control applications. Despite the variety of power controls that have been extensively studied, it has been found that the reactive power controller of a normal two-level inverter has a limit on the utilisation of the solar array during the night. keywords: capacity; controller; current; figure; grid; ieee; inverter; mlmfi; multilevel; output; power; system; transfer; transmission; voltage cache: ap-9286.pdf plain text: ap-9286.txt item: #1532 of 1656 id: ap-9295 author: Altaee Naman, Hala; Jaffar Mohammed Ameen, Zinah title: Optimised rotating energy-efficient clustering for wireless sensor devices by sewing training-based optimisation date: 2024 words: 5241 flesch: 57 summary: The average rates of node remaining energy at first node death for the two methods are shown in Fig- ure 2c. The average rates of node remaining energy at first node death for the two methods are shown in Figure 3c. keywords: algorithm; clustering; energy; itrl; member; method; network; nodes; number; sensor; stbo; wsn cache: ap-9295.pdf plain text: ap-9295.txt item: #1533 of 1656 id: ap-930 author: Jones, H. F. title: The Metric Operator and the Functional Integral Formulation of Pseudo-Hermitian Quantum Mechanics date: 2007 words: 3754 flesch: 75 summary: The operator � � �e Q is in fact precisely the metric opera- tor occurring in � � � � �, ,A A� , (7) because the similarity transformation � � �A A� � 1, � �� � � gives � � � � �� � � � � � � �A A† 1 . In this case the result of the similarity transfor- mation e e Q Q� 1 2 1 2� is X x ip P p ix � � � � cosh sinh cosh sinh � � � �� (35) resulting in H x p h X P X P( , ) ( , )� � �� �2 2 , where � � � � � � � � � � 1 2 2 1 2 2 ( ), ( ). (36) 38 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 47 keywords: exp �; j �; � d; � e; � z; � � cache: ap-930.pdf plain text: ap-930.txt item: #1534 of 1656 id: ap-9300 author: Hussein, Adnan M.; Mohammed Ali, Hussein Hayder; Ali, Zahraa title: Assessing the efficacy of flat-plate solar collectors using nanofluids in the climatic context of Kirkuk city, Iraq date: 2024 words: 5682 flesch: 52 summary: [17] studied the effects of nanocellulose (CNC) nanofluids on im- proving flat plate solar collector efficiency. Experimental investigation of new design of solar water distillation coupled with flat plate solar water collector. keywords: collector; cuo; efficiency; figure; flow; nanofluid; plate; radiation; rate; s−1; temperature; water cache: ap-9300.pdf plain text: ap-9300.txt item: #1535 of 1656 id: ap-9301 author: Müller, Petr; Benýšek, Martin; Štefan, Radek; Holan, Jakub; Košťálová, Šárka title: Assessment of structures repeatedly exposed to thermal loading and extinguishing water: a case study of a firefighting training facility date: 2023 words: 8863 flesch: 61 summary: Eurocode 3: Design of steel structures – part 1-2: General rules – structural fire design, 2005. This technical report deals with the classification of concrete struc- tures only, steel structures are not included. keywords: assessment; building; capacity; concrete; figure; fire; floor; gas; load; results; steel; strength; structure; temperature cache: ap-9301.pdf plain text: ap-9301.txt item: #1536 of 1656 id: ap-931 author: Haluzová, P. title: Effective Data Mining for a Transportation Information System date: 2008 words: 4321 flesch: 58 summary: LnNo number line number PorNo number line order EvCislo text tram-car license number Vozovna number number of the depot (1–8), from which the tram departed A number ID of tram stop B number number of the stop post C number delay (overtake recorded as minus) D number reserve column, without data Table 2: Attributes of daytime traffic tables name of attribute Meaning name of category values of attributes weekday days in a week Monday to Sunday 1 to 7 hour hour interval (e.g. 7 means an interval from 7:00 to 7:59) morning 5, 6 morning rush hour 7, 8 before noon 9, 10 noon 11, 12 afternoon 13, 14 afternoon rush hour 15, 16 evening 17, 18, 19, 20 late evening 21, 22, 23 average delay average delay [s] under 1 min �0, 59� from 1 to 2 min �60, 119� from 2 to 3 min �120, 179� over 3 min > 179 Table 3: Meaning and categories of attributes for each month, generates about 20 000 duplicate records, this corresponds to 1.3 % of the total. The rules fall into the Ant~Suc form in the first class, and the so-called contingent rules fall into the 24 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 48 No. 1/2008 Effective Data Mining for a Transportation Information System P. Haluzová This paper describes the application of data mining methods in the database of the DORIS transportation information system, currently used by the Prague Public Transit Company. keywords: accidents; association; attributes; data; delay; number; rules; tram cache: ap-931.pdf plain text: ap-931.txt item: #1537 of 1656 id: ap-932 author: Lévai, G. title: PT-symmetry and Non-Central Potentials date: 2007 words: 2706 flesch: 63 summary: Obviously, the contribution of the radial component will be 1, while it can be shown that with the phase convention described above, � ��� � � �( )1 l m holds. Equation (5) is solvable for the choice Q( ) sin ( )� � �� �2 2 , q � �� �( )1 , (7) when the solutions are given by the associated Legendre func- tions � P� � �cos( ) keywords: r �; � -symmetric; � symmetry; � � cache: ap-932.pdf plain text: ap-932.txt item: #1538 of 1656 id: ap-9324 author: Yao, Kutorzi Edwin; Zhang, Yuxue; Shi, Yufeng title: Numerical solution for stochastic Volterra-Fredholm integral equations with delay arguments date: 2024 words: 6052 flesch: 75 summary: Consider the stochastic Volterra Fredholm integral equation with time delay τ > 0: X(t) = −5τ − t + 12t2 − t3 − t4τ + ∫ t 0 (t − s)X(s − τ)ds + ∫ 1 0 (t + s)X(s − τ)ds + ∫ t 0 sX(s − τ)dB(s), (41) where s, t ∈ − X̂(s − τ)|| ) ds ≤ C · O(h4) + C · O(h4) = O(h4). keywords: delay; equations; integral; stochastic; − τ; − ∫ cache: ap-9324.pdf plain text: ap-9324.txt item: #1539 of 1656 id: ap-9330 author: Noprianto, Noprianto; Dien, Habibie Ed; Sukmana, Septian Enggar; Al Baity, Fayyadh; Mentari, Mustika title: Empowering IoT: leveraging data sensor communication with LoRAWAN in diverse environments date: 2025 words: 6994 flesch: 54 summary: This research tests LoRAWAN’s performance for sensor data communication both inside multi-story buildings (up to 8 storeys) and outside. In order to meet the research needs and opportu- nities related to LoRa technology, further research is required to analyse the performance of LoRa imple- mented in sensor data transmission using LoRaWAN modules as the data transmission medium. keywords: antenna; communication; conditions; data; dbi; figure; gateway; iot; line; lorawan; node; performance; rssi; sensor; sight; signal; transmission cache: ap-9330.pdf plain text: ap-9330.txt item: #1540 of 1656 id: ap-934 author: Fring, A. title: PT-symmetry and Integrability date: 2007 words: 4980 flesch: 73 summary: It is crucial to note that the ��-operator is an anti-linear operator, i.e. it acts as �� �� ��( ) * * � �� � � �� � � with �, �� and �, � being some eigenfunctions. (10) Therefore the Hamiltonians H V E W W Em m m m m m� �� � � � � � � � � �� � 2 (11) are isospectral H keywords: h �; hermitian; m �; phys; q �; vol; � -symmetry; � � cache: ap-934.pdf plain text: ap-934.txt item: #1541 of 1656 id: ap-9345 author: Rataj, Jan; Mátl, Jakub; Suk, Pavel title: Application of the Source-Jerk method using a neutron generator in a subcritical reactor date: 2023 words: 4504 flesch: 53 summary: The model with AmBe neutron source is visualised in the YZ direction in Figure 15. The time step was set to 1 s and 0.1 s. Both the D-D generator and the AmBe source were used as neutron sources. keywords: det; detectors; generator; method; neutron; reactivity; reactor; source; time cache: ap-9345.pdf plain text: ap-9345.txt item: #1542 of 1656 id: ap-935 author: Beran, V.; Hromada, E. title: Dynamic Simulations in Cost and Time Estimation of the Construction Process date: 2008 words: 2819 flesch: 58 summary: The results of particular simulations P P( ; ) ( ( ; ))T C sim T C� TABproject (2a) for the example described below are T��45; 89� and C��2411;3131�. The results present a useful risk evaluation for projects or project activities. keywords: activities; construction; project; time; � � cache: ap-935.pdf plain text: ap-935.txt item: #1543 of 1656 id: ap-9351 author: Tulembayeva, Aigul; Ashirov, Shayakhmet; Makarov, Evgenij; Seitbattalov, Zhexen title: Digital model of automated unmanned aerial vehicle with edge computing application for railway reconnaissance date: 2024 words: 4128 flesch: 57 summary: Specifications of reconnaissance drones. The general specification of reconnaissance drones is presented in Table 1. keywords: algorithm; computing; detection; edge; figure; image; object; railway; recognition; reconnaissance; train; uav cache: ap-9351.pdf plain text: ap-9351.txt item: #1544 of 1656 id: ap-9354 author: Pařez, Jan; Kovář, Patrik; Tater, Adam title: Prediction of temperature field distribution in a gas turbine using a higher order neural network date: 2023 words: 5629 flesch: 56 summary: This paper presents the prediction of temperature field distribution in a single annular section using an artificial neural network (ANN). Introduction The cooling process and temperature distribution of solid parts in gas turbines is critical to their reliable operation and maximum performance. keywords: cfd; data; distribution; engine; error; figure; gas; heat; learning; order; results; set; temperature; tube cache: ap-9354.pdf plain text: ap-9354.txt item: #1545 of 1656 id: ap-936 author: Bíla, H. title: How Do Energies Complexify? date: 2007 words: 5715 flesch: 63 summary: d discussed in [11] with ��-symmetric boundary conditions(9) � � � �� �( ) ( ) ( )0 c E , therefore one needs to solve the differential equation 0 � � � � �d d keywords: -symmetric; complexification; eigenvalues; square; � � cache: ap-936.pdf plain text: ap-936.txt item: #1546 of 1656 id: ap-938 author: Borisov, D. title: On a Quantum Waveguide with a Small PT-symmetric Perturbation date: 2007 words: 1683 flesch: 73 summary: that if Re k1 0� , or Re k1 0� , Re k2 0� , (7) there exists the unique eigenvalue of �� converging to the threshold of the continuous spectrum, and the asymptotics of this eigenvalue reads as follows � � � �� � �� � � � 1 02 1 2 2 3k In this case ~V � 0, ~u � 0 and K u L� � � 1 2 01 2 2( )� (12) If the relation (6) holds true, the function u1 is identically zero, and K V u L: (~,~) ( )� � 2 � Employing (3), by analogy with (11) in the same way we check ~~ ~ ~ ( ) ( ) V u x u u L L d � � �� � � � 2 2 keywords: � � cache: ap-938.pdf plain text: ap-938.txt item: #1547 of 1656 id: ap-9380 author: Bouhafs, Lina; Tamalouzt, Salah; Bouzida, Ahcene title: A novel approach to feature extraction from gear condition monitoring signals date: 2025 words: 5175 flesch: 50 summary: and The position of the accelerometer is shown in Figure 8 under three different load conditions of 25, 50, and 60 Nm, and with a rotating frequency of 3 Hz. There- fore, three sets of measurements have been taken to investigate the impact of load on gear fault signals. It is characterised by several advantages, which can be summarised as follows: EDO is a powerful and versa- tile technique for signal analysis in signal processing that detects rapid changes, extracts peaks, measures variation speed, and analyses signal frequency, partic- ularly when there is significant noise interference and various vibrations. keywords: edo; energy; fault; figure; frequency; gear; gearbox; method; noise; operator; signal; vibration cache: ap-9380.pdf plain text: ap-9380.txt item: #1548 of 1656 id: ap-940 author: Kochan, D. title: Quantization of Equations of Motion date: 2007 words: 6084 flesch: 67 summary: Using it, for any other � within this class we get an oriented loop (cycle): � � � � �� :� � � �1 0class . Having the function �( , , )q v t and the components of the generalized force �( , , )q v t we can establish the two-form � � � �� �� : ( )� � � � �� � �i i v i iq t t q v tid d keywords: form �; q t; t �; � class; � d; � q; � ref; � x; � � cache: ap-940.pdf plain text: ap-940.txt item: #1549 of 1656 id: ap-9411 author: Šťastný, Patrik; Antošová, Naďa; Kalús, Daniel; Mučková, Veronika title: The importance of using active thermal protection following restoration work on old buildings date: 2024 words: 6117 flesch: 51 summary: [27] V. Mučková, D. Kalús, D. Koudelková, et al. Contribution to active thermal protection research – Part 1: Analysis of energy functions by parametric study. Energies 16(11):4391, 2023. https://doi.org/10.3390/en16114391 [28] D. Kalús, V. Mučková, D. Koudelková, et al. Contribution to active thermal protection research – Part 2: Verification by experimental measurement. keywords: atp; buildings; energy; heat; insulation; moisture; protection; research; structure; system; technologies; technology; temperature; thermal cache: ap-9411.pdf plain text: ap-9411.txt item: #1550 of 1656 id: ap-9415 author: Onopchenko, Anton V.; Kurin, Maksym O.; Shyrokyi, Yurii V.; Horbachov, Oleksii O. title: Investigation the plastic flows in the metal stamping-drawing process at the die corner date: 2024 words: 6616 flesch: 56 summary: Study of factors affecting springback in sheet metal forming and deep drawing process. 2. Numerical simulation of the stamping-drawing in LS-DYNA In order to test the effectiveness of the model for calculating the processes of plastic deformation of different sheet materials, based on a closed set of equations of continuum mechanics, in predicting the numerical simulation of sheet metal stamping- drawing, the model established in this paper was used to simulate the distribution of plastic equiva- lent stresses in sheet metal parts, based on LS-DYNA software. keywords: alloys; blank; die; drawing; figure; material; metal; process; sheet; stamping cache: ap-9415.pdf plain text: ap-9415.txt item: #1551 of 1656 id: ap-942 author: Ambrož, P. title: Matrices Associated to 3-Interval Exchange Transformation and their Spectra date: 2007 words: 2343 flesch: 76 summary: Then M has the MEME Property if and only if there exists � �� � �1 1, such that det 1 1 1 21 22 23 31 32 33 � � � � � � � � �m m m m m m � , (1) det m m m m m m 11 12 13 31 32 32 1 1 1� � � � � � � � � � � , (2) det m m m m m m 11 12 13 21 22 23 1 1 1� � � � � � � � � � . �: Denote �: det� M and let ��, � �� � �1 1, be an eigenvalue of M. keywords: m �; � det; � � cache: ap-942.pdf plain text: ap-942.txt item: #1552 of 1656 id: ap-9426 author: Al-Kadhimi, Aymen M.; Abdelkareem, Ammar E.; Tsimenidis, Charalampos C. title: P-LDPC coded image transmission with OFDM over underwater acoustic channel date: 2024 words: 5662 flesch: 58 summary: In [8], LDPC codes for non-binary sources were investigated for underwater multicarrier commu- nications. In consequence of those challenges, the quality of data transmission is affected in terms of reduced data rate to cope with complication in underwater channels and frequent increased data packet loss. keywords: block; channel; codes; coding; figure; image; ldpc; length; performance; system; transmission; underwater cache: ap-9426.pdf plain text: ap-9426.txt item: #1553 of 1656 id: ap-943 author: Prajzler, V.; Burian, Z.; Jeřábek, V.; Hüttel, I.; Špirková, J.; Gurovič, J.; Oswald, J.; Zavadil, J.; Peřina, V. title: Properties of Erbium Doped Hydrogenated Amorphous Carbon Layers Fabricated by Sputtering and Plasma Assisted Chemical Vapor Deposition date: 2008 words: 3521 flesch: 56 summary: 4 Conclusion We report on carbon layers doped with erbium ions de- posited by sputtering, by PACVD and by magnetron sputter- ing onto a silicon or glass substrate. 5: The schema of magnetron sputtering set-up The absorbance spectrum of erbium doped carbon layers fabricated by magnetron sputtering is given in Fig. keywords: carbon; erbium; films; layers; samples; sputtering; vol cache: ap-943.pdf plain text: ap-943.txt item: #1554 of 1656 id: ap-9437 author: Nazal, Samya A.; Nasser, Mohamed A.; Hanon, Muammel M.; Ameen, Hani A. title: Investigation of the impact of product thickness and strain on cold forging processes date: 2024 words: 4650 flesch: 55 summary: This study investigates the impact of sheet metal thickness and strain generated on a cold forging process. While previous studies have explored various as- pects of cold forging, such as die design, deformation characteristics of specific materials, and the effects of anisotropic work-hardening, the unique contribution of this study lies in its exploration of the interplay between sheet metal thickness and strain induced in cold forging procedures. keywords: design; die; figure; forging; metal; process; product; sheet; strain; thickness cache: ap-9437.pdf plain text: ap-9437.txt item: #1555 of 1656 id: ap-9438 author: Hussein, Mohammed Abdulshareef; Jassim, Hassan Kamil title: A novel approach to nonlinear fractional volterra integral equations date: 2024 words: 3518 flesch: 61 summary: 5/2024 A novel approach to nonlinear fractional Volterra integral equations Now: arcsin (ψ(t)) 5/2024 A novel approach to nonlinear fractional Volterra integral equations [27] A.-M. Wazwaz. keywords: equations; fractional; method; volterra cache: ap-9438.pdf plain text: ap-9438.txt item: #1556 of 1656 id: ap-9439 author: Brixi, Abderrahim; Ghembaza , Moulay Smaïne; Boudenne , Abderrahim title: Hydrothermal and mechanical performance of mortars containing waste brick powder date: 2024 words: 9884 flesch: 57 summary: Therefore, future research that integrates these aspects could provide a more holis- tic view of the behaviour of brick crumb mortars and their suitability in different environmental con- texts. Additionally, brick crumb mortars offer a combi- nation of properties that make them suitable for a range of applications in wet and dry, ambient and 323 A. Brixi, M. S. Ghembaza, A. Boudenne Acta Polytechnica elevated temperature environments, whilst providing additional ecological benefits including: (1.) keywords: brick; brick powder; cement; concrete; days; environment; figure; materials; mortar; powder; properties; strength; temperature; waste; water; ° c cache: ap-9439.pdf plain text: ap-9439.txt item: #1557 of 1656 id: ap-944 author: Jakubský, V. title: Pseudo-Hermitian Operators in a Description of Physical Systems date: 2007 words: 3282 flesch: 64 summary: In other words, there should hold � � � �� � � �1 2 1 20 0 0 0( ), ( ) ( ) ( ), ( ) ( )� U t U t . Thus, we may write the resulting scalar product of two solutions �i of the Klein- -Gordon equation in the following form � �( , ) ( , ) , � , � , � � � � � � � � � � � 1 2 1 2 1 2 1 2 1 1 2 1 � � � � � � � � �� m i m � �� � � �2 1 2 1 1� � �� , , ( , ). keywords: phys; pseudo; quantum; vol; � � cache: ap-944.pdf plain text: ap-944.txt item: #1558 of 1656 id: ap-946 author: Günther, U.; Kirillov, O. N.; Samsonov, B. F.; Stefani, F. title: The Spherically Symmetric a2–dynamo and Some of its Spectral Peculiarities date: 2007 words: 4903 flesch: 69 summary: [u u [u u u u u m n n mn m n n n n � � � � � � � � � � � � � , ] , , ] , , : , 2 0� � �� � � � � (7) and correspond to eigenvalue branches � � �� �� n n n� � 0 which scale linearly with �0. From the domain �( )†A� of the adjoint operator �� �( ) � � ( , ) ( , ) �(†A u u� � � � �L L r2 201 01 �0 0) , � �� Bu r� �1 0� , �: � � u � � � � � � u u 1 2 , (4) � : ( ) B � �� � � � � � � � �r r l r r 0 1 , one reads off that � �( ) ( )†A A� �� and, hence, the dynamo operator itself is not self-adjoint even in a Krein space. keywords: dynamo; l �; r �; u �; vol; � -profile; � � cache: ap-946.pdf plain text: ap-946.txt item: #1559 of 1656 id: ap-9466 author: Roshan, Alireza; Abdelrahman, Magdy title: Developing an effective approach to assess pavement condition for high friction surface treatment (HFST) installation date: 2025 words: 6592 flesch: 50 summary: Some agencies acknowledge facing the com- plexity of evaluating pavement conditions for HFST application. 6/2024 Developing an effective approach to assess pavement condition . . keywords: accuracy; application; condition; data; decision; hfst; index; iri; learning; models; pavement; pci; research; tree; values cache: ap-9466.pdf plain text: ap-9466.txt item: #1560 of 1656 id: ap-9475 author: Flídr, Erik title: On the vortex identification within a linear blade cascade - an experimental research date: 2024 words: 3640 flesch: 65 summary: Keywords: Linear blade cascade, vortex identification, H criteria, experimental research, pressure measurements. The paper aims to identify vortex structures in the linear blade cascade as precisely as possible from a new perspective. keywords: blade; cascade; flow; identification; vortex; vortices cache: ap-9475.pdf plain text: ap-9475.txt item: #1561 of 1656 id: ap-948 author: Hosten, P.; Asbach, M. title: Detection of Facial Features in Scale-Space date: 2007 words: 3132 flesch: 63 summary: In the second subset all feature vectors describing the rest of the image are aggre- gated (class a � 0): � � � �F a F aface non face� � � � � �f f1 0, (8) Each subset is clustered with the k-means algorithm. (6) The columns of transform matrix � are the eigenvectors of �. keywords: cluster; features; interest; points; scale; � � cache: ap-948.pdf plain text: ap-948.txt item: #1562 of 1656 id: ap-949 author: Bičík, A. title: Moderna arhitektura u hrvatskoj 1930–IH –Modern Architecture in Croatia 1930’s by Darja Radović Mahečić date: 2008 words: 1705 flesch: 48 summary: Nevertheless, these © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 43 Acta Polytechnica Vol. 48 No. 1/2008 Moderna arhitektura u hrvatskoj 1930–IH Modern Architecture in Croatia 1930’s by Darja Radović Mahečić A. Bičík Keywords: Croatian modern architecture, functionalism, functionalism in Croatia Book jacket REVIEW buildings are on the list, because they are important for the development of modern architecture in Croatia. In the course of the project a na- tional register of Croatian modern architecture from the pe- riod between 1926 and 1940 was set up. keywords: architects; architecture; buildings; croatian; czech; zagreb cache: ap-949.pdf plain text: ap-949.txt item: #1563 of 1656 id: ap-950 author: Karajica, M. title: Valuating the Investment Efficiency of Distribution Companies date: 2007 words: 3988 flesch: 56 summary: uj are weights assigned to j-th output, while i r�1, ,� , j s�1, ,� and k k n�1 0, , , ,� � . � Multi Criteria Decision Making methods, � Data Analysis Envelopment. keywords: companies; criteria; efficiency; investment; methods; � � cache: ap-950.pdf plain text: ap-950.txt item: #1564 of 1656 id: ap-951 author: Olshanetsky, M. title: Lectures on Classical Integrable Systems and Gauge Field Theories date: 2008 words: 17987 flesch: 79 summary: The monodromies of ��(z) are read off from (4.32) � � � �� �( ) ( ) )z zN �1 2e , � � � �� �( ) ( ) ( )z zN � �e 1 Then LET have the prescribed monodromies. The symplectic form on � is � � � � ��tr( ) , d dA d dAj,k j,k j k . keywords: curve �; d �; form �; group �; j �; k �; s �; space �; u �; v �; y �; z z; z �; � 0; � diag; � e; � et; � f; � g; � gl; � h; � jk; � l; � lie; � n; � red; � t; � � cache: ap-951.pdf plain text: ap-951.txt item: #1565 of 1656 id: ap-952 author: Lisník, J. title: Valuation of Companies date: 2007 words: 2094 flesch: 63 summary: Z A B C D E� � � � � � � � � �12 14 33 06 0999. . . . . [1]: � OTE (Greek), � Czech Telecom (CT) (Czech), � Swisscom (Swiss), � Telekom Austria (TA) (Austrian), � Telenor (Norwegian), � TeliaSonera (TS) (Swedish-Finnish). keywords: companies; company; czech; czk; indicators cache: ap-952.pdf plain text: ap-952.txt item: #1566 of 1656 id: ap-954 author: Petrucha, V. title: An Improved Version of the Fluxgate Compass Module date: 2007 words: 2737 flesch: 60 summary: F F F F F F T TEMP-X TEMP-Y TEMP-Z MEAS-X MEAS-Y ME � � � � � � � � � � AS-Z X Y Z OX OY O � � � � � � � � � � � � � � � � � � � T k k k f f f f f f 0 0 0 0 0 0 Z � � � � � � � � � T , (2) F F F a a a a a a a a a X Y Z � � � � � � � � � � � � � � �11 12 13 21 22 23 31 32 33� � � � � � � � � � � � � � F F F TEMP-X TEMP-Y TEMP-Z , (3) F F F F� � �X Y Z 2 2 2 , (4) � �E n- F F i n RMS MEAS� � �1 1 2 1 . 2: Three types of PCB fluxgate sensors developed at CTU. keywords: compass; field; fig; fluxgate; sensors; � � cache: ap-954.pdf plain text: ap-954.txt item: #1567 of 1656 id: ap-955 author: Stolin, A. title: 25 Years of Quantum Groups: from Definition to Classification date: 2008 words: 4227 flesch: 64 summary: (15) We see that, by a suitable choice of parameters a, b and z2, we can add to the XXZ Hamiltonian an arbitrary linear com- bination of the terms � � � �k z k k Set � � �� I I� �, where � �I � is an orthonormal basis of g with respect to the Killing form. keywords: lie; quantum; u u; � � cache: ap-955.pdf plain text: ap-955.txt item: #1568 of 1656 id: ap-956 author: Stojanovic, A.; Unger, M. title: Robust Detection of Point Correspondences in Stereo Images date: 2007 words: 4693 flesch: 63 summary: General Problem Statement The point �x belongs to the conic C if the following equa- tion is verified � � �x xT C 0 , (5) where C is given by: C � �ll l T k2� . (3) The Mahalanobis distance k of a possible epipolar line m from the estimated epipolar line l is then given by ( ) ( )l m l ml� � ��T � k2. keywords: point �; � f; � l; � x; � � cache: ap-956.pdf plain text: ap-956.txt item: #1569 of 1656 id: ap-9566 author: Cyrus, Václav; Cyrus, Jan title: The effect of the inlet chamber and diffuser on the reverse aerodynamic performance of an axial flow fan date: 2024 words: 5877 flesch: 68 summary: Keywords: Axial flow fan, reversing, inlet chamber, performance, simulation. Axial flow fan (Stage A: Dt = 600 mm, Dh = 330 mm). keywords: chamber; coefficient; fan; figure; flow; flow fan; inlet; inlet chamber; performance; pressure; ratio; reversal; reverse; stage cache: ap-9566.pdf plain text: ap-9566.txt item: #1570 of 1656 id: ap-9572 author: Aggarwal, Sudhanshu title: Non-homogeneity effect on the vibration of the rectangular visco-elastic plate subjected to the linear temperature effect with quadratic thickness variation in both directions date: 2024 words: 8192 flesch: 73 summary: Vibration of non-homogeneous visco-elastic rectangular plate having linearly varying thickness in both directions with thermal gradient effect. Vibration analysis of visco-elastic rectangular plate with thickness varies linearly in one and parabolically in other direction. keywords: mode; plate; vibration; β2 = cache: ap-9572.pdf plain text: ap-9572.txt item: #1571 of 1656 id: ap-9575 author: Orynbassar, Sayat; Kapparova, Ainur; Dosymbetova, Gulbakhar; Almen, Dinara; Yershov, Evan; Saymbetov, Ahmet; Nurgaliyev, Madiyar; Zholamanov, Batyrbek title: Simulation of an active cooling system for low-concentratinag photovoltaic solar cells date: 2025 words: 6723 flesch: 49 summary: [41] K. A. A. Amer, M. A. Irhouma, M. I. Hamdan, et al. Economic-Environmental-Energetic (3E) analysis of photovoltaic solar energy systems: Case study of mechanical & renewable energy engineering departments at Wadi AlShatti University. With an active cooling system, we can get a more uni- form distribution of solar cell temperature than with passive cooling [28]. keywords: cell; cooling; energy; figure; photovoltaic; radiator; surface; system; temperature; tubes; water cache: ap-9575.pdf plain text: ap-9575.txt item: #1572 of 1656 id: ap-958 author: Blanik, N.; Hülsbusch, M.; Herzog, M.; Blazek, C. R. title: Assessment of Human Hemodynamics under Hyper- and Microgravity: Results of two Aachen University Parabolic Flight Experiments date: 2007 words: 1749 flesch: 61 summary: 7: Different kinetics of blood volume shifts of three sub- jects (measuring points on the forehead using a green (1) and an infrared light source (2), normalized at start of measurement) Fig. 8: Statistical analysis of skin blood volume changes measured with PPG sensors on subjects’ foreheads Acknowledgments To research these dynamic behaviors, the subjects were exposed to a rapid change of gravity (between zero and 1.8 times the normal gravitational force on earth, i.e. 0 g and 1.8 g, respectively) on parabolic flights. keywords: blood; fig; light; sensor; subjects cache: ap-958.pdf plain text: ap-958.txt item: #1573 of 1656 id: ap-9580 author: Košovský, Dávid; Miglierini, Marcel; Kmječ, Tomáš; Dekan, Július; Bujdoš, Marek title: Precipitation of oxide dispersion strength steels after long-term annealing at temperature of 475 °C date: 2024 words: 7777 flesch: 50 summary: Chemical analysis The qualitative analysis of ODS steel samples was performed by XRF. Metal- lic materials in powder form enriched with yttrium oxide particles (Y2O3) with a purity between 99 % and 99.5 % were used as precursors for the produc- tion of PM80KhV2 steel samples. keywords: alloys; annealing; atoms; chromium; concentration; figure; journal; materials; ods; phase; precipitates; sample; steels; temperature; time cache: ap-9580.pdf plain text: ap-9580.txt item: #1574 of 1656 id: ap-9584 author: Zemanová, Alena; Anderle, Vojtěch; Masopust, Jan title: Settlement of piles with negative skin friction: design approaches according to part 3 of Eurocode 7 date: 2025 words: 11127 flesch: 63 summary: Keywords: Negative skin friction, load-settlement curves, pile settlement, pile design, soil settlement, Eurocode 7. 1. This plane divides the ground profile into consolidating and stable zones and designs a suf- ficient pile length to meet the design requirements, causing structural capacity and pile settlement to be affected by negative skin friction. keywords: curve; friction; load; nsf; pile; pile settlement; plane; resistance; settlement; skin; skin friction; soil; soil settlement cache: ap-9584.pdf plain text: ap-9584.txt item: #1575 of 1656 id: ap-959 author: Smirnov, F. title: Correlation Functions for Lattice Integrable Models date: 2008 words: 7411 flesch: 73 summary: L L mm m( ) ( ) , ,� �� �� � 0 0 L L0 0( ) ( ) ,� � �� � � �� � � where �� � � � �� � �( ( ))1 2 8 is the anomalous dimension. k k k k k � �� � � � � � ��� � �( )� � � �1 1 . keywords: b �; p �; s �; w �; x �; � 0; � j; � k; � l; � q; � � cache: ap-959.pdf plain text: ap-959.txt item: #1576 of 1656 id: ap-9596 author: Novotný, Jan; Nováková, Ludmila; Machovská, Ilona; Kašpárek, Miloš title: Loss of particle ratio metric for particle image velocimetry accuracy estimation date: 2025 words: 4732 flesch: 55 summary: 4/2025 Loss of particle ratio metric for particle image velocimetry accuracy . . . 4/2025 Loss of particle ratio metric for particle image velocimetry accuracy . . . keywords: correlation; error; image; measurement; metric; particle; total; value cache: ap-9596.pdf plain text: ap-9596.txt item: #1577 of 1656 id: ap-960 author: Eros, L.; Bozoki, F. title: Refactorisation methods for TTCN-3 date: 2007 words: 3377 flesch: 66 summary: We have concentrated on refactoring TTCN-3 source codes. No. 4–5/2007 Fig. 8: Original and refactorised TTCN-3 source codes keywords: model; node; source; ttcn-3; value cache: ap-960.pdf plain text: ap-960.txt item: #1578 of 1656 id: ap-9604 author: Flídr, Erik title: Experimental investigation of an entropy production in a linear blade cascade date: 2024 words: 5819 flesch: 60 summary: Although the theoretical description is powerful, the full picture of the vortices in blade cascades is beyond the capability of theoretical predictions. The presented paper focuses on an experimental investigation of entropy production in a linear blade cascade composed of prismatic blades for two pitch-to-chord ratios, t/c = 0.6, and 0.9. keywords: blade; boundary; cascade; entropy production; flow; inlet; inlet flow; number; outlet; pressure; reynolds; wall cache: ap-9604.pdf plain text: ap-9604.txt item: #1579 of 1656 id: ap-961 author: Sitarz, A. title: 31Lectures on Noncommutative Geometry date: 2008 words: 20455 flesch: 67 summary: Then, if � % is the completion of � to a free module we have: � � � � � � �& � & & & & & % %( ) ( ) �, so: � � � � � �& � & & & & % %( ) ( ) � and hence: © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ 43 Acta Polytechnica Vol. 48 No. 2/2008 � � � �& � . keywords: algebra �; b �; differential; function �; j �; k �; m �; mn �; module �; noncommutative; operator �; representation �; sin �; space �; x �; � d; � e; � f; � n; � p; � u; � v; � � cache: ap-961.pdf plain text: ap-961.txt item: #1580 of 1656 id: ap-962 author: Havlíček, L. title: Extending the Life Time of a Nuclear Power Plant: Impact on Nuclear Liabilities in the Czech Republic date: 2007 words: 4044 flesch: 48 summary: Unlike the disposal and decommissioning liability there is no obvious relation between NPP life time (waste volume produced) and liability. 4: Cumulative storage costs (cash-flow view) for the evaluated model NPP life time options 0 200 400 2 0 0 6 2 0 1 0 2 0 1 4 2 0 1 8 2 0 2 2 2 0 2 6 2 0 3 0 2 0 3 4 2 0 3 8 2 0 4 2 2 0 4 6 2 0 5 0 2 0 5 4 2 0 5 8 2 0 6 2 2 0 6 6 2 0 7 0 2 0 7 4 2 0 7 8 2 0 8 2 m il. C Z K basic option alternative 1 alternative 2 Fig. keywords: liability; life; npp; operator; storage; time cache: ap-962.pdf plain text: ap-962.txt item: #1581 of 1656 id: ap-9633 author: Pastrňák, Martin; Čada, Radek; Pektor, Tomáš; Rusz, Stanislav; Tatíček, František; Mizera, Jarosław; Pastrňáková, Marie title: Drece method for continuous severe plastic deformation of CuZn37 sheets date: 2024 words: 3613 flesch: 55 summary: Tensile stress-strain curves of the CuZn37 alloy depending on the number of DRECE passes. Tensile properties depending on the number of DRECE passes. exhibits very good plastic properties. keywords: deformation; drece; materials; microstructure; pass; passes; process; properties cache: ap-9633.pdf plain text: ap-9633.txt item: #1582 of 1656 id: ap-964 author: Lucki, M. title: Negative Chromatic Dispersion Generated by Introducing Curvature into Photonic Crystal Fiber date: 2007 words: 4132 flesch: 59 summary: The electric fields of the fundamental modes of the structure (composed of the association of LP01 guided in the core and mode guided in the cladding), called supermodes, are then given by: � � � I I j zI� �exp , (3) � � � II II j zII� �exp , (4) where �i is the radial distribution, and �i is the propagation constant of the considered mode. To simplify the definition, we decompose the supermodes into elementary modes (or inversely) in a cross-section as: � � �I I Ib b� �1 1 2 2, (5) � � �II II IIb b� �1 1 2 2. (6) keywords: bending; curvature; dispersion; radius; wavelength; � � cache: ap-964.pdf plain text: ap-964.txt item: #1583 of 1656 id: ap-9647 author: Hrytsai, Ihor; Slipchuk, Andrii title: Study of non-stationary cutting processes in power skiving date: 2024 words: 4600 flesch: 65 summary: Using power skiving to increase the efficiency and precision of internal gear cutting. Chip geometry and cutting forces in gear power skiving. keywords: cutting; force; gear; pass; passes; power; skiving; tool; tooth cache: ap-9647.pdf plain text: ap-9647.txt item: #1584 of 1656 id: ap-965 author: Toppan, F. title: Extended Supersymmetries in One Dimension date: 2008 words: 16224 flesch: 64 summary: The class of irreducible representations is unique apart from special signatures, where two non-equivalent irreducible rep- resentations are linked by sign flipping (� �� �� � ). � � � �� (6.52) keywords: d �; fields �; k �; l �; matrices �; n �; r �; s �; t �; � fusion; � g; � j; � p; � q; � qi; � � cache: ap-965.pdf plain text: ap-965.txt item: #1585 of 1656 id: ap-966 author: Szabados, R.; Sipos, K. title: Developing E-learning Courses for Mobile Devices date: 2007 words: 6070 flesch: 59 summary: Due to the large number of different video codecs, there are numerous ways for video adaptation. � Video: Probably the most important problem is adequate adaptation of video files to the given platform. keywords: adaptation; course; file; learning; package; program; scorm; system; video cache: ap-966.pdf plain text: ap-966.txt item: #1586 of 1656 id: ap-9660 author: Hristovska, Elizabeta title: Concept for evaluating the safety of a dynamically loaded gearbox reducer date: 2025 words: 5436 flesch: 58 summary: Conclusion In this article, a concept for the safety evaluation of a dynamically loaded reducer (gear reducer) is presented. Keywords: Gearbox reducer, dynamically loading, reducer safety, reducer evaluation. keywords: excavator; gear; gear pair; load; load capacity; reducer; safety; shaft; working cache: ap-9660.pdf plain text: ap-9660.txt item: #1587 of 1656 id: ap-9663 author: Holeček , Vít title: Landmark emancipation of technical intelligence in pre-World War II Czechoslovakia date: 2024 words: 10187 flesch: 49 summary: Interest in incorporating technical sciences (includ- ing economics and some social disciplines) into the Česká akademie věd a umění (Czech Academy of Sci- ences and Arts) had been expressed even before the First World War. Keywords: History of Science and Technology, Masaryk Academy of Labour, IV. department of mechanical and electrical engineering, Czechoslovakia, 1918–1953, education, Albert Adalbert (Vojtěch) Velflík, cooperation with the USA, Stanislav Špaček, Czechoslovak Academy of Sciences. keywords: academy; commission; czech; czech academy; czech technical; czechoslovakia; department; development; economic; engineering; engineers; institute; komise; labour; masaryk; masaryk academy; national; new; prague; praha; pro; research; sciences; society; technical; university cache: ap-9663.pdf plain text: ap-9663.txt item: #1588 of 1656 id: ap-9664 author: Hrtus, Martin Dominik title: Prague postal time service: clock and sirens – improbable connection date: 2024 words: 9481 flesch: 59 summary: Keywords: History of technology, Prague Postal Time Service, Czechoslovakia, 1930s, synchronised clocks, anti-aircraft sirens, civil defence, František Rieger, Prague. Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague PRAGUE POSTAL TIME SERVICE: keywords: air; box; clock; construction; czech; czechoslovakia; file; františek; postal; ppts; prague; public; rieger; service; sirens; state; system; technical; time; time service cache: ap-9664.pdf plain text: ap-9664.txt item: #1589 of 1656 id: ap-9665 author: Hamr, David title: Transfer of master clock network technology to Czechoslovakia: Elektročas or Elektrozeit? German roots of Czechoslovak post-war timepieces 1923–1990 date: 2024 words: 6080 flesch: 49 summary: The American company IBM, an important global producer of master clock systems in the first half of 20th century, established its branch in Žitná Street in Prague and supplied clock networks to many adminis- trative buildings in particular, and was also successful in transport industry (railways). Keywords: History of technology, Czechoslovakia, technological transfer, timepieces industry, 20th cen- tury, centrally controlled economy, uniform time, master clock, master clock network technology, modernity. keywords: century; clock; company; czech; elektročas; german; master; networks; production; systems; technology; time; war cache: ap-9665.pdf plain text: ap-9665.txt item: #1590 of 1656 id: ap-9667 author: Knespl, David title: Progress versus tradition – traditional craftsmanship and attempts at industrial tower clock production in the Czech lands in the 19th century date: 2024 words: 7023 flesch: 63 summary: There were also several attempts at factory mass production of tower clocks, which, however, were not developed until the 1880s by the company of Ludvík Hainz. Keywords: History of science and technology, clockmaking, tower clocks, industrial production, serial production, Josef Božek, Romuald Božek, Ludvík Hainz, Václav Krečmer, 19th century. keywords: attempts; božek; century; clockmaker; clocks; czech; german; guild; industrial; josef; lands; prague; praha; production; school; technical; tower; tower clocks cache: ap-9667.pdf plain text: ap-9667.txt item: #1591 of 1656 id: ap-9668 author: Sedláček, Jiří; Efmertová, Marcela title: Emanuel Šlechta, engineer and entrepreneur in the First Republic of Czechoslovakia date: 2024 words: 12381 flesch: 64 summary: Keywords: History of science and technology, Czechoslovakia, Emanuel Šlechta, Stanislav Špaček, minister of technology after 1948, Czech Technical University in Prague, World War II, 1922–1938. Already at the beginning of his professional career, Emanuel Šlechta had a chance to become a leader of his generation and to become a leader of the technical elite of the time, thanks to his excellent technical en- gineering education at the Czech Technical University in Prague and his many years of practical experience in the USA. keywords: american; czech; czech technical; czechoslovak; emanuel; emanuel šlechta; engineering; industrial; international; management; national; organisation; prague; praha; production; stanislav; technical; time; university; usa; war; work; šlechta; špaček cache: ap-9668.pdf plain text: ap-9668.txt item: #1592 of 1656 id: ap-9670 author: Kyselka, Daniel; Efmertová, Marcela title: Czechoslovak and Polish intelligence (cryptologic) services at the time of the institutionalisation of both states and their armies after 1918 date: 2024 words: 12012 flesch: 63 summary: It also worked on improv- ing the rights of Czechoslovak intelligence officers. He divided military schools into higher, secondary, and lower and distinguished between types of military courses. keywords: army; courses; cryptologic; czechoslovak; department; education; enigma; french; general; german; intelligence; isbn; military; mission; officers; poland; polish; praha; růžek; schools; services; staff; state; war; world cache: ap-9670.pdf plain text: ap-9670.txt item: #1593 of 1656 id: ap-9671 author: Rodríguez Ortiz, Jorge Alonso title: A geopolitics of the diaspora of British engineers in South America in the first half of the 20th century: the cases of the Institution of Locomotive Engineers centre in Argentina date: 2024 words: 10074 flesch: 44 summary: During the sessions the call was made: “I appeal to all present to join and to do everything possible to make ourselves into a real live body, which will result in cementing the good feeling and unity of purpose which already exist among railway engineers of all grades and nationalities in these great South Ameri- can Republics.” Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague A GEOPOLITICS OF THE DIASPORA OF BRITISH ENGINEERS IN SOUTH AMERICA IN THE FIRST HALF OF THE 20th CENTURY: THE CASES OF THE INSTITUTION OF LOCOMOTIVE ENGINEERS CENTRE IN ARGENTINA Jorge Alonso Rodríguez Ortiz Czech Technical University in Prague, Faculty of Electrical Engineering, Historical Laboratory of (Electro)Technology, Technická 2, 166 27 Prague, Czech Republic correspondence: rodrijor@fel.cvut.cz Abstract. keywords: american; british; centre; century; circulation; development; diaspora; engineering; engineers; history; institution; journal; knowledge; locomotive; members; railway; south; south america; technology; transfer cache: ap-9671.pdf plain text: ap-9671.txt item: #1594 of 1656 id: ap-9672 author: Mansouri, Amani; Rodríguez Ortiz, Jorge Alonso title: Tunisian engineers: protagonists of Tunisia’s modernisation. Two key moments: 1956 and 1987 date: 2024 words: 9787 flesch: 44 summary: [7], in which she defines the condi- tions for the emergence of Tunisian engineers as a very recent phenomenon and establishes their fundamen- tal participation in modernisation. However, it is necessary to know and analyse the evolution of the social and formative origin of Tunisian engineers, articulated to the various dynam- ics of political power and the contingent evolution of life. keywords: development; education; engineering; engineers; french; independence; knowledge; modernisation; national; power; process; science; state; system; technology; tunisia cache: ap-9672.pdf plain text: ap-9672.txt item: #1595 of 1656 id: ap-9679 author: Efmertová, Marcela title: Czechoslovakia/Czech Republic as a leader in polymer technologies in Central Europe: from contact lenses to 3D printing date: 2024 words: 8642 flesch: 56 summary: Josef Průša and filaments for 3D printing The second distinguished personality active in the sphere of Czech polymers, not in the sense of their scientific research but rather their practical applica- tions, is the young Czech entrepreneur Josef Průša 10Elaborated according to a touring exhibition Otto Wichterle at the OPTA Trade Fair, 24.–26. The Research by Otto Wichterle during World War II At that time, while working on the subjects connected with his habilitation, namely during prepanation of crotonaldehydacental, he prepared rubber as a byprod- uct – the very first synthetic polymer Wichterle pro- duced. keywords: academy; chemical; chemistry; company; contact; czech; czechoslovakia; development; institute; lenses; macromolecular; materials; otto; otto wichterle; polymers; prague; průša; republic; research; sciences; university; wichterle; work cache: ap-9679.pdf plain text: ap-9679.txt item: #1596 of 1656 id: ap-968 author: Švec, P.; Jandák, V. title: The Influence of PZT Actuators Positioning in Active Structural Acoustic Control date: 2007 words: 2364 flesch: 62 summary: [1] for the clamped sides (at x � 0 and x a� ) � � � � 2 2 3 30 0 u x u x � �, (4) and for the free sides (at y � 0 and y � b) The total power � radiated by a planar source, e.g., a vi- brating panel, is proportional to the normal velocity of its sur- face, and can be expressed as �( ) ( , ) � � � � � � � � � �� � �� � ��0 0 2 2 2 2 28 c k V k k k k k k k z x y x y x yd d � � � � , (1) where k is the wave number vector magnitude, kx, ky are its components in the x and y directions, �0 and c0 are air density and phase speed of sound respectively, Vz is the 2D k-space Fourier transform of the normal velocity of the vibrating surface, and � ( ) means the real part of its argument. keywords: actuator; control; plate; � � cache: ap-968.pdf plain text: ap-968.txt item: #1597 of 1656 id: ap-9680 author: Dudzik, Michael title: The decimalisation of Republican time. The French Revolution which failed (1793–1795) date: 2024 words: 10068 flesch: 65 summary: In order to establish a new social order, the revolutionaries proposed, among other things, the use of decimal time which was part of the so-called Republican calendar. While decimal time was an important addition to the Republican calendar, few authors have emphasised it, let alone produced works of merit on the issue. keywords: calendar; day; days; decimal; decimalisation; des; french; hours; months; new; people; republican; revolution; system; time; use; year cache: ap-9680.pdf plain text: ap-9680.txt item: #1598 of 1656 id: ap-9685 author: Simiński , Przemysław; Neumann, Vlastimil; Svoboda, Pavel; Cibulová, Klára; Vnuk, Radovan title: The effect of a malfunctioning braking system on the behaviour of a special vehicle during an emergency braking in a curvilinear movement date: 2024 words: 4295 flesch: 59 summary: ABS pressure modulator model together with the control unit (one for each of the four-wheel groups), (5.) brake mechanism model (for each wheel), (6.) vehicle model, (7.) Load restraining on road vehicles – Safety – Part 1: Calculation of securing forces, 2010. keywords: braking; characteristics; figure; model; road; surface; system; time; vehicle; wheels cache: ap-9685.pdf plain text: ap-9685.txt item: #1599 of 1656 id: ap-9695 author: Švolík, Milan; Makýš, Peter; Šťastný, Patrik; Ďubek, Marek title: Optimising load transfer using temporary supports in monolithic construction date: 2024 words: 5308 flesch: 57 summary: The disadvantages of this method of slab support include the increased use of supports and the occupation of a large area of the slab that could be used for the benefit of the construction. 2.5.3. Therefore, an important rule of thumb for ceiling slab support calculations is that the formwork on the recently cast slab is com- pletely removed and the new slab can immediately deflect under its own weight, and only then can the designer be sure that the actual weight of the floor is now transferred directly to the permanent support system of columns/walls, etc. and not to the form- work supports. keywords: ceiling; construction; floors; formwork; load; slab; structure; supports; transfer cache: ap-9695.pdf plain text: ap-9695.txt item: #1600 of 1656 id: ap-970 author: Tauchmanová, J. title: Computer Controlled Switching Device for Deep Brain Stimulation date: 2007 words: 1848 flesch: 60 summary: �� � �� �1 005194 0080111 2. �� �� �06487 014691 2, F q q q( ) . keywords: brain; fig; response; � � cache: ap-970.pdf plain text: ap-970.txt item: #1601 of 1656 id: ap-9709 author: Tunca, Bilgehan; Karaca, Bahadır title: Impact of process parameters on the mechanical and surface properties of AA6082 date: 2025 words: 6347 flesch: 50 summary: Extrusion process parameters. Heat treatment process The 6XXX aluminium alloy series, defined as the Al- Mg-Si system, contains magnesium (Mg) and silicon (Si) as major elements. keywords: alloy; aluminium; grain; parameters; process; properties; samples; surface; temperature; treatment cache: ap-9709.pdf plain text: ap-9709.txt item: #1602 of 1656 id: ap-971 author: Pošta, P. title: Communication between a Matrix Converter Modulator and a Superset Regulator date: 2008 words: 1796 flesch: 64 summary: Keywords: matrix converter, FPGA, VHDL, power electronics. 1: Matrix converter 3×3 4 © Czech Technical University Publishing House http://ctn.cvut.cz/ap/ Acta Polytechnica Vol. 48 No. 3/2008 Fo ur th St ep T hi rd St ep Se co nd St ep Fi rs t S te p keywords: converter; input; regulator; switching cache: ap-971.pdf plain text: ap-971.txt item: #1603 of 1656 id: ap-972 author: Dietrich, P. title: Modeling Measurement Uncertainty in Room Acoustics date: 2007 words: 2873 flesch: 53 summary: Keywords: Room acoustics, measurement uncertainty, GUM, ISO 3382, uncertainty modeling. The main influence factors and their relevance regarding measurement uncertainty have been analyzed and determined. keywords: acoustics; fig; measurement; parameters; room; uncertainty; � � cache: ap-972.pdf plain text: ap-972.txt item: #1604 of 1656 id: ap-9721 author: Gilodo, Oleksandr; Arsirii, Andrii; Somina, Yuliia title: Analysis of reticulated dome with universal connector date: 2025 words: 4117 flesch: 62 summary: Keywords: Glued wood, reticulated dome, centric compression, eccentric compression, connector. Domes have significant architectural expressive- ness and uniqueness. keywords: compression; diameter; dome; elements; figure; load; state; strain; structures; wood cache: ap-9721.pdf plain text: ap-9721.txt item: #1605 of 1656 id: ap-9724 author: Hasan, Alaq F.; Raheem, Hadeer A.; Hussein, Rajaa title: Performance improvement of manipulator actuated by pneumatic artificial muscles based on synergetic control and social spider optimisation algorithm date: 2025 words: 5793 flesch: 56 summary: Conclusion In this work, a synergetic algorithm control theory and a sliding mode control method are developed for tracking PAM system control. Synergetic control design based sparrow search optimization for tracking control of driven-pendulum system. keywords: algorithm; control; controller; equation; pam; parameters; performance; pneumatic; sact; system cache: ap-9724.pdf plain text: ap-9724.txt item: #1606 of 1656 id: ap-9725 author: Merit, Khaled; Beladgham, Mohammed; Taleb-Ahmed, Abdelmalik title: Temporal fusion strategy for violence detection: utilising convolutional and LSTM neural networks for surveillance videos date: 2025 words: 6976 flesch: 53 summary: The slow fusion and early fusion approaches require the selection of video frames to accurately represent the subject. This process can be found in [8], which uses convolutional networks and LSTM to classify violent videos. keywords: accuracy; dataset; detection; figure; frames; fusion; learning; models; networks; performance; scenes; task; video; violence cache: ap-9725.pdf plain text: ap-9725.txt item: #1607 of 1656 id: ap-973 author: Aboelhassan, M. title: A Proportional Integral Derivative (PID) Feedback Control without a Subsidiary Speed Loop date: 2008 words: 1850 flesch: 60 summary: 4: Block diagrams: proportional control term 3.3 Parallel PID Controllers The family of PID controllers is constructed from various combinations of the proportional, integral and derivative terms as required to meet specific performance requirements. A comparison (shown in (Fig. 6:)) of P, PD, PID control- lers with-without the subsidiary speed loop shows that P and PID controllers have zero error (y w� � �) in a steady state, but the PD-controller has non-zero error. keywords: controller; loop; pid; speed cache: ap-973.pdf plain text: ap-973.txt item: #1608 of 1656 id: ap-9738 author: Sadeghi, Kabir; Royaei, Javad; Nouban, Fatemeh title: Evaluation and modelling of the buckling behaviour of SRC composite columns under simultaneous off-axis and lateral loading date: 2025 words: 4881 flesch: 56 summary: [12] investigated the effect of load eccentricity on the FRS-enclosed stress relationship of concrete columns. Effect of load eccentricity on the stress-strain relationship of FRP-confined concrete columns. keywords: buckling; buckling load; columns; compressive; eccentricity; load; load eccentricity; load ratio; mode cache: ap-9738.pdf plain text: ap-9738.txt item: #1609 of 1656 id: ap-974 author: Aleksandrowicz, A.; Leonhardt, S. title: Wireless and Non-contact ECG Measurement System – the “Aachen SmartChair” date: 2007 words: 2674 flesch: 59 summary: Traditionally, for ECG measurement conductive elec- trodes have been applied which are directly attached to the skin. [4] introduced a so-called “driven-ground- -plane” circuit for non-contacting ECG measurements which was also implemented in the application presented here. keywords: body; ecg; electrodes; fig; measurement; signal; system cache: ap-974.pdf plain text: ap-974.txt item: #1610 of 1656 id: ap-9746 author: Huněk, Adam; Bartoš, Ondřej title: Photogrammetric image processing and comparison of experimental result with laser diffraction and the PDA method date: 2025 words: 6691 flesch: 58 summary: The principle of image analysis methods for aerosol size measurement 2.1 OTSU segmentation 3 Optical methods 3.1 The Phase-Doppler anemometer 3.2 Laser diffraction 3.3 The photogrammetric method (shadowgraph) 4 Calibrating the photogrammetric method 5 The result of comparing the optical methods using monodisperse particle samples 6 The example of polydisperse distribution measurement 7 Conclusion List of symbols Acknowledgements References Optical methods have been established as a standard tool for aerosol size measurement. keywords: background; evaluation; figure; image; measurement; methods; object; pda; sample; segmentation; size cache: ap-9746.pdf plain text: ap-9746.txt item: #1611 of 1656 id: ap-9747 author: Michel-Schneider, Ulrike; Palazzo, Andrea title: Knowledge and technology transfer in construction engineering: two case studies involving special concrete date: 2025 words: 10848 flesch: 39 summary: Technology transfer process Technology transfer process of MOB-Bars. cense because they wanted to have control over their invention. keywords: carbocon; cases; concrete; construction; ctu; engineering; industry; innovation; knowledge; ktt; model; process; research; researchers; start; study; technology; transfer; tud; university cache: ap-9747.pdf plain text: ap-9747.txt item: #1612 of 1656 id: ap-976 author: Novák, A. title: Identification of Nonlinear Systems: Volterra Series Simplification date: 2007 words: 2260 flesch: 65 summary: 3, which shows the sub-kernel �h2( )� and kernel h2 1 2( , )� � . The relation between the output and the input can be ex- pressed in the form given by the total sum y t x t n ( ) [ ( )]� �Hn (1) in which Hn[ ( )] ( , , ) ( ) ( )x t h x t x tn n n n� � � �� � �� � �� � � �� � � � � �1 1 1d d� ( 2) represents n-dimensional convolution of the input signal x(t) and n-dimensional Volterra kernel hn(�1,..., �n). keywords: � d; � h; � � cache: ap-976.pdf plain text: ap-976.txt item: #1613 of 1656 id: ap-977 author: Čapek, R. title: Visualization and Simulation in Scheduling date: 2008 words: 2236 flesch: 54 summary: Two areas of usage are considered: sim- ulation for monitoring the influence of scheduling on the system function (e.g. for digital filters), and time visualization (e.g. graphic represPentation of execution on a production line in time). On the other hand, Matlab includes the Virtual Reality toolbox, which is also a sufficient tool for visualization of scheduling results. keywords: function; matlab; scheduling; simulation; time; visualization cache: ap-977.pdf plain text: ap-977.txt item: #1614 of 1656 id: ap-978 author: Tomek, J. title: Inductive Contactless Distance Measurement Intended for a Gastric Electrical Implant date: 2007 words: 2789 flesch: 57 summary: Magnetic measurements are unfortunately directionally dependent, so only the use of multi-axial probes and trans- mitters can ensure precise position evaluation. 2 Methods The basic of distance measurement solutions using the mutual induction principle is to have just two single axial probes, one transmitter and one receiver. keywords: distance; fig; induction; system; � � cache: ap-978.pdf plain text: ap-978.txt item: #1615 of 1656 id: ap-9792 author: Bhagat, Abhishek Shankar; Kalkhambkar, Vaiju; Prasanta Gupta, Pranda; Prakash, Vivek title: Energy management for electric vehicles with battery and supercapacitor date: 2025 words: 14193 flesch: 51 summary: Keywords: Hybrid energy storage system, energy management system, supercapacitor, regenerative braking, electric vehicle. For heat dissipation, energy management systems requires auxiliary electrical power, which is drawn from HESS, and therefore impacts the vehicle range. keywords: battery; braking; braking energy; control; current; cycle; demand; drive; driving; electric; energy; energy management; energy storage; figure; hess; hybrid; mode; power; soc; storage system; strategy; supercapacitor; system; vehicle; voltage cache: ap-9792.pdf plain text: ap-9792.txt item: #1616 of 1656 id: ap-980 author: Schotsch, B.; Vary, P.; Clevorn, T. title: Analysis of Mismatched First Order A Priori Information in Iterative Source-Channel Decoding date: 2007 words: 4587 flesch: 56 summary: The autocorrelation takes on values from a finite set, e.g., � �� � 00 01 09. , . The resulting codeword is denoted as y with bits y, which are mapped to bipolar bits � ���y � � 1 for BPSK transmission with symbol energy Es �1. keywords: assignments; correlation; index; information; soak1; source; � t; � � cache: ap-980.pdf plain text: ap-980.txt item: #1617 of 1656 id: ap-9800 author: Tanuku, Poorna Kantha; Mamidi, Lakshmi Prasanna; Gundagani, Murali title: Modelling and analysis of three-dimensional chemically reacting, radiating Casson-nanofluid flow: thermophoresis and Brownian motion effects date: 2024 words: 5078 flesch: 56 summary: [25] found the impact of chemical reaction effects on unsteady MHD fluid flow past an infinite vertical plate embedded in a porous medium with a variable suction. [24] carried out an analysis of Soret and Dufour effects on unsteady MHD flow past a semi-infinite vertical porous plate using finite differ- ence method. keywords: effects; figure; flow; fluid; heat; mhd; radiation cache: ap-9800.pdf plain text: ap-9800.txt item: #1618 of 1656 id: ap-981 author: Gross, S.; Stehle, T. title: RealTimeFrame – A Real Time Processing Framework for Medical Video Sequences date: 2008 words: 3622 flesch: 55 summary: Chapter two lists the requirements for a real time software framework for medical image data processing. 3 Work flow RealTimeFrame was designed to provide a flexible platform for medical image processing. keywords: data; framework; image; medical; processing; realtimeframe; software; source; video cache: ap-981.pdf plain text: ap-981.txt item: #1619 of 1656 id: ap-9810 author: Msallam, Mohammed Majid; Samet, Refik title: Multi-mode secure data communication for real-time robot arm control with Li-Fi technology date: 2025 words: 7506 flesch: 60 summary: [19] used AES for data encryption in their Li-Fi system, using the Elliptic Curve Diffie-Hellman (ECDH) key exchange protocol for secure key generation. In used encryption modes, the received data is decrypted before instructing the robotic arm to perform the designated action. keywords: arc4; arm; communication; data; encryption; figure; mode; movement; rc4; receiver; system; technology; transmission; transmitter cache: ap-9810.pdf plain text: ap-9810.txt item: #1620 of 1656 id: ap-9818 author: Schulze-Halberg, Axel title: Persistence of solvability in quantum systems deformed by Dunkl operators date: 2025 words: 8787 flesch: 65 summary: − V1 − 4. (63) Eν,n = −4 n2 − 8 n − 2 n f2 − V1 − 4 − 2 f2 = −4 n2 − 8 n − (2 n + 2) √ 1 + 4 V1 + 4 ν (ν − δ) keywords: dunkl; equation; m(x cache: ap-9818.pdf plain text: ap-9818.txt item: #1621 of 1656 id: ap-982 author: Schneider, T. E. title: Automated Classification of Analysis- and Reference Cells for Cancer Diagnostics in Microscopic Images of Epithelial Cells from the Oral Mucosa date: 2007 words: 3607 flesch: 52 summary: classifiers analysis cells reference cells overall rate kNN 92.4 98.5 95.5 F-kNN 93.9 97.5 95.7 SVM 2 92.9 98.5 95.7 SVM203 93.9 97.0 95.5 Table 3 It can be seen that chromatin features provide a good separability perfor- mance, whereas only the geometrical features within the basic set morphology do not distinguish the two classes sufficiently. keywords: cells; classification; dna; feature; knn; results; set cache: ap-982.pdf plain text: ap-982.txt item: #1622 of 1656 id: ap-9826 author: da Cruz, Daniel Magalhães; Stumpf, Felipe Tempel; Vassoler, Jakson Manfredini; Guilherme, Carlos Eduardo Marcos title: Assessment of the effects of UV-A exposure on the mechanical strength of offshore mooring multifilaments date: 2025 words: 8584 flesch: 51 summary: https://doi.org/10.4043/17510-MS [7] T. M. Schmidt, C. Bianchini, M. M. C. Forte, et al. Socketing of polyester fibre ropes with epoxy resins for deep-water mooring applications. There are indications that degradation by ultraviolet exposure for Aramid, HMPE, polyamide, and polyester fibres, restricts the constitutive behaviour in terms of strength and extension, but without changing the shape of the curve. keywords: aramid; degradation; exposure; extension; fibres; figure; force; hmpe; lcp; materials; model; mooring; polyamide; polyester; strength; ultraviolet; uv exposure cache: ap-9826.pdf plain text: ap-9826.txt item: #1623 of 1656 id: ap-984 author: Luecken, H.; Tech, G.; Schwann, R.; Kappen, G. title: Stick Based Speckle Reduction for Real-Time Processing of OCT Images on an FPGA date: 2007 words: 3529 flesch: 60 summary: For a stick length of N NL � �( )1 2 , using the minimum number of required cy- cles N NS � �4 4 for the serial implementation yields: N f l w f � �clk img4 1. [4], both filters have been implemented in C�� and Matlab and adjusted to OCT-image data. keywords: algorithm; fig; image; implementation; oct; processing; speckle; � � cache: ap-984.pdf plain text: ap-984.txt item: #1624 of 1656 id: ap-985 author: Adamec, M.; Indráková, M.; Karajica, M. title: The European Electricity Market and Cross-Border Transmission date: 2008 words: 3360 flesch: 55 summary: Due to the impossibility of storing electric power, its price is highly volatile on spot markets (Fig. 2.1 Ways of trading in electricity There are two main markets, in which electric power is traded. keywords: border; capacity; countries; electricity; energy; market; power; transmission cache: ap-985.pdf plain text: ap-985.txt item: #1625 of 1656 id: ap-9858 author: Runcziková, Judita; Chleboun, Jan; Gavioli, Chiara; Krejčí, Pavel title: Some remarks on a mathematical model for water flow in porous media with competition between transport and diffusion date: 2025 words: 4189 flesch: 58 summary: In [7], a comparative analysis is made between vertical water flow models derived from numerical solutions of the Richards equation and reservoir cascade schemes used in hydrological modelling. For application to regional water flow models within catchment areas, more complex model formula- tions are required. keywords: diffusion; flow; model; saturation; value; water cache: ap-9858.pdf plain text: ap-9858.txt item: #1626 of 1656 id: ap-986 author: Mgaya, E. V.; Müller, Z. title: The Impact of Connecting Distributed Generation to the Distribution System date: 2007 words: 3306 flesch: 54 summary: The disturbances are categorized according to the frequency (power systems, acoustic, radio). This paper will draw attention to the impacts of connecting wind power plants to the existing system. keywords: distribution; generators; power; system; voltage; wind cache: ap-986.pdf plain text: ap-986.txt item: #1627 of 1656 id: ap-988 author: Vancl, J. title: Improved Evaluation of Planar Calibration Standards Using the TDR Preselection Method date: 2007 words: 2543 flesch: 50 summary: [1] and statistical processing of mea- sured data of an over-determined set of calibration standards [2]-[5]. Another improved calibration procedure optimizes parameterized models of calibration standards to minimize nonreciprocity in a known asymmetrical reciprocal two-port device [6]. keywords: calibration; error; fig; measurement; parameters; standards cache: ap-988.pdf plain text: ap-988.txt item: #1628 of 1656 id: ap-9884 author: Benrebouh, Imed; Douadi, Abdellah; Hafhouf, Ilyas; Merdas, Abdelghani; Meguellati, Abderrahim; Del Serrone, Giulia; Moretti, Laura title: Experimental and statistical analysis of soil stabilization to avoid landfilling date: 2025 words: 7376 flesch: 60 summary: [In France; Effect of lime stabilization on geotechnical properties of clay soil]. https://doi.org/10.1051/e3sconf/202019503044 [64] S. Pourakbar, A. Maneshmoaveni, D. Moazami, et al. Stabilization of clay soil using alkali-activated sewage sludge. keywords: analysis; chemical; clay; clayey; content; curing; days; figure; increase; lime; lime content; plasticity; soil; stabilisation; table; test; ucs cache: ap-9884.pdf plain text: ap-9884.txt item: #1629 of 1656 id: ap-989 author: Čundev, D. title: Analysis of the Fuel Efficiency of a Hybrid Electric Drive with an Electric Power Splitter date: 2008 words: 2279 flesch: 59 summary: When simulating a of power drive system, is essential to calculate precisely the efficiency of each component where there is energy transformation. Keywords: Hybrid drive, fuel efficiency, European driving schedule, electric power splitter, electric traction motor, super-capacitor. keywords: drive; driving; efficiency; fig; hybrid; power cache: ap-989.pdf plain text: ap-989.txt item: #1630 of 1656 id: ap-9893 author: Měrková, Alžběta; Kheml, Přemysl; Perrot, Alexandre; Hála, Petr title: Experimental investigation of polyurethane-coated HPFRC panels under direct contact blast date: 2025 words: 6224 flesch: 56 summary: tal studies to examine the behaviour and response of HPFRC panels under various loading conditions. HPFRC panels with protective coatings, using polyurethane (PU) to enhance the resistance against ballistic loading, were investigated in [3, 4]. keywords: blast; coating; figure; hpfrc; hpfrc panels; panels; polyurea; strength; test cache: ap-9893.pdf plain text: ap-9893.txt item: #1631 of 1656 id: ap-990 author: Rajnoha, J. title: Speaker Non-speech Event Recognition with Standard Speech Datasets date: 2007 words: 4219 flesch: 61 summary: In the non-speech event modelling task this calls for a sufficient number of non-speech events present in the database, which is the way to get a general description of the modelled event. To increase the number of non-speech events present in the training set of speech data, one other dataset was used. keywords: database; events; non; phase; recogniser; recognition; speaker; speech; training cache: ap-990.pdf plain text: ap-990.txt item: #1632 of 1656 id: ap-991 author: Havlíček, L. title: Nuclear Fuel Cycle Evaluation and Real Options date: 2008 words: 3874 flesch: 54 summary: Keywords: Nuclear fuel cycle, front-end, back-end, economic evaluation, evaluation methods, NPV, uncertainty, flexibility, real options. cient only for a few years of operation. The first part is usually called the “Front-End”, and in- cludes all activities connected with procurement of nuclear material and services, production of nuclear fuel and its trans- portation to the NPP site. keywords: cycle; end; fuel; fuel cycle; option; uranium; � � cache: ap-991.pdf plain text: ap-991.txt item: #1633 of 1656 id: ap-9916 author: Šimon, Vojtěch; Hudec, René; Read, Andrew title: The satellite SMILE – its prospects for observing cosmic sources date: 2025 words: 3316 flesch: 70 summary: Meaningful compar- isons of the light curves of 1-day means of X-ray fluxes of a cosmic object from various satellites will thus be possible. Figure 2 compares the details of the light curves of Vela X-1 in various X-ray bands (2–3 keV, 8–9 keV, and 15–50 keV). keywords: band; bat; flux; kev; light; maxi; ray; sxi cache: ap-9916.pdf plain text: ap-9916.txt item: #1634 of 1656 id: ap-9918 author: Abdu-aljabar, Rana Dhia’a; Aljafaar, Khansaa Dheya; Ameen, Zinah Jaffar Mohammed; Naman, Hala A. title: A Comparative Study of Breast Cancer Detection and Recurrence Prediction Using CatBoost Classifier date: 2025 words: 4365 flesch: 54 summary: In 2019, breast cancer accounted for over one-third of all cancer cases in women in Iraq. Keywords: CatBoost classifier, breast cancer, machine learning, bioinformatic. keywords: auc; bayes; breast; cancer; catboost; dataset; learning; machine; model; recurrence; xgboost cache: ap-9918.pdf plain text: ap-9918.txt item: #1635 of 1656 id: ap-992 author: Matz, V.; Kreidl, M.; Šmíd, R. title: Signal Separation in Ultrasonic Non-Destructive Testing date: 2007 words: 4368 flesch: 61 summary: H x x i x c H mat k k k k l ( ) exp( ) exp ( � � � � � � � � � � � � � �� � � �� � 2 42 2 ) ( ),� � � H k Ktot � 1 (8) where � is the material attenuation coefficient, cl is the veloc- ity of the longitudinal waves, xk is the grain positions of k K tot�1� is the number of grains and �k is a random vector depending on the grain volume. [9] based on group delay statistics are the group delay moving standard deviation � ��k k m k M k M T m T� � � � � � � � � �� � �1 1 2 1 2 � �( ) (4) and the group delay moving entropy H f T f Tk j j j keywords: echo; level; noise; signal; thresholding; wavelet; � � cache: ap-992.pdf plain text: ap-992.txt item: #1636 of 1656 id: ap-994 author: Xanthos, S.; Gong, M.; Andreopoulos, Y. title: Design and Validation of a Probe for Spatially and Temporally Resolved Measurements of Vorticity and Strain Rates in Compressible Turbulence Interactions date: 2007 words: 4968 flesch: 59 summary: k p � � � � � � � � � � � � � � � � 0 2 , where Ui is the instantaneous velocity component, i �1 2, or 3 and U U U U Uk k � � �1 2 2 2 3 2. The density variation across the sensing area has also been estimated from the � p p obtained above and the measured variation of total temperature T0 through the un- certainty propagation formula: � � �� �0 2 0 2 1 2 � � � � � � � � � � � � � � � �� � � � �� p p T TT . keywords: measurements; pressure; probe; shock; u u; velocity; vorticity; � u; � � cache: ap-994.pdf plain text: ap-994.txt item: #1637 of 1656 id: ap-9947 author: Racz, Istvan I.; Nehme, Yasmin; Balazs, Lajos G. title: Gamma-ray bursts and optical brightness: insights from Swift satellite date: 2025 words: 6467 flesch: 58 summary: Survival function of GRBs We used the optical V magnitudes of Swift GRB obser- vations, representing a sufficiently large homogeneous dataset sample, for a survival analysis in R program- ming language with “survival” packages [60, 62]. This semi-parametric nature of the model makes it a robust tool for handling various types of survival data. keywords: analysis; astronomy; bagoly; bursts; data; distribution; function; gamma; grbs; ray; ray bursts; survival; swift; time cache: ap-9947.pdf plain text: ap-9947.txt item: #1638 of 1656 id: ap-995 author: Kněžek, M. title: Power Producer Production Valuation date: 2008 words: 2081 flesch: 51 summary: (7) The total difference from plan fulfillment will be given as the sum of the actual historical variance and the expected fu- ture variance in a one-year time window: � � �� �� �Act Futtd td td td . 3 Closed historical position A closed historical position is a position for the period from the beginning of the current year to the present date, and is calculated as the sum of the concluded contract vol- umes per hour and day of the relevant period, while the following applies: qS qG qPtd td td td td td � � �� � , (1) where qStd is the volume of sold electricity for hour t of day keywords: electricity; position; td td; td �; � � cache: ap-995.pdf plain text: ap-995.txt item: #1639 of 1656 id: ap-9951 author: Döhring, Thorsten; Stanik, Eva; Zeising, Sebastian; Meissner, Martin title: Astronomy events at Aschaffenburg University to attract future students date: 2025 words: 3685 flesch: 53 summary: Often, pupils do not know if they should dare to pursue a degree – and then decide against it without having experienced Aschaffenburg University from the inside. At Aschaffenburg University, in the “Experience Modules” of the project “School Contacts”, we show and discuss subject areas that are neglected in canon- ised school education – focused on “school subject knowledge” – and where the application relevance for pupils cannot be established well enough. keywords: aschaffenburg; astronomy; figure; lecture; pupils; rocket; school; students; university cache: ap-9951.pdf plain text: ap-9951.txt item: #1640 of 1656 id: ap-996 author: Brůha, O.; Brůha, T.; Fořt, I.; Jahoda, M. title: Dynamics of the Flow Pattern in a Baffled Mixing Vessel with an Axial Impeller date: 2007 words: 4979 flesch: 61 summary: The energy dissipation per unit mass � related to the experimental system used in this study is � � � � �� � �0 0 0 0 0 0 0 P m P m P V P V , ( ) (11) and after substitution V � 0.0192 m3, P0 � 10.3 W, V0 � 0.0109 m3 we obtain � � 1.384 m2 s�3. kg s�1 (� � 1 kg l�1). keywords: circulation; energy; fig; flow; impeller; loop; pcl; time; vol; � � cache: ap-996.pdf plain text: ap-996.txt item: #1641 of 1656 id: ap-9963 author: Racz, Istvan I.; Balazs, Lajos G.; Horvath, Istvan; Pinter, Sandor title: Correlation between X-ray and gamma data of Swift measurements date: 2025 words: 6508 flesch: 60 summary: After the data of the variables were cleaned, the remaining variables were separated into two sets and we have determined the number of dimensions (canon- ical variables) that are significant in explaining the association between the 2 sets of variables (γ and X-ray data). Conclusion We used canonical correlation analysis to investigate the relationship between gamma (fluence, 1 sec peak flux, and duration) and X-ray data (11 hours flux, 24 hours flux, decay index, spectral index, and HI col- umn density). keywords: bursts; column; correlation; data; density; flux; gamma; grb; grbs; index; ray; ray bursts; variables cache: ap-9963.pdf plain text: ap-9963.txt item: #1642 of 1656 id: ap-9966 author: Efmertová, Marcela title: Preface to the Special Issue of Acta Polytechnica “History of science and technology” date: 2024 words: 731 flesch: 32 summary: An example is the use of time in political decisions during the French Revolution, where a specific calendar based on the decimalization of republican time was created. Time also needed to be considered later in the organization and institutionalization of Czechoslovak military authorities between the wars (article by D. Kyselka). keywords: article; technical; time cache: ap-9966.pdf plain text: ap-9966.txt item: #1643 of 1656 id: ap-9968 author: Koncz, Bendegúz; Joó, András Péter title: Mass growth of massive quiescent galaxies in the Illustris TNG simulation date: 2025 words: 4527 flesch: 65 summary: Previous studies examined, how galaxy mergers can quench the star formation in galaxies. The number of galaxy mergers was relatively low as well before z > 2. keywords: formation; galaxies; galaxy; mass; mergers; notices; star cache: ap-9968.pdf plain text: ap-9968.txt item: #1644 of 1656 id: ap-9969 author: Karpov, Sergey title: STDweb: simple transient detection pipeline for the web date: 2025 words: 9637 flesch: 52 summary: Therefore, the transient detection on such images requires either acquiring the reference image by observing the same location after the transient faded down, which is impractical in most cases, or falling back to publicly available archival im- ages from some of the large scale sky surveys that 58 vol. Keywords: Photometric pipelines, transients, image processing. keywords: analysis; aperture; calibration; catalogue; code; data; detection; figure; image; objects; order; photometry; processing; set; sky; society; stdweb; transient; user cache: ap-9969.pdf plain text: ap-9969.txt item: #1645 of 1656 id: ap-9971 author: Jelínek, Martin; Novotný, Filip; Klose, Sylvio; Stecklum, Bringfried; Maleňáková, Alžběta; Štrobl, Jan title: Early steep optical decay linked to reverse shock for GRB200131A date: 2025 words: 4410 flesch: 63 summary: We observed an optical afterglow of GRB 200131A obtaining the first photometric point 63 s after the satellite trigger. On January 31, 2020 at 22:41:16 UT a long gamma- ray burst (GRB) was detected by instrument BAT onboard Swift satellite in the southwest of Cassiopeia constellation, about 15° northeast of M31, and was designated GRB 200131A keywords: 200131a; afterglow; data; grb; mag; redshift; reverse; shock cache: ap-9971.pdf plain text: ap-9971.txt item: #1646 of 1656 id: ap-9972 author: Bagoly, Zsolt; Balazs, Lajos G.; Horvath, Zsuzsa; Horvath, Istvan title: The spatial distribution of GRBs date: 2025 words: 5105 flesch: 58 summary: Revisiting the statistical isotropy of GRB sky distribution. Conclusion The yearly variances of redshift observations can be separated into two groups according to the afterglow measurements or the observation of the host galaxy’s spectral lines. keywords: afterglow; bursts; data; distribution; gamma; grbs; host; observations; ray; redshift; sky cache: ap-9972.pdf plain text: ap-9972.txt item: #1647 of 1656 id: ap-9973 author: Pichler, Enikő; Koncz, Bendegúz; Gabányi, Krisztina É.; Joó, András Péter; Tóth, L. Viktor title: Interstellar gas motions around massive star formation regions in the nearby dwarf galaxy DDO43 date: 2025 words: 3461 flesch: 63 summary: HI line areas in the velocity intervals 314–334 km s−1 and 374–394 km s−1 against FUV flux. The processing of HI spectra 2.2 Far-ultraviolet data 3 Results 3.1 The distribution of residual spectral line areas 3.2 Comparison to far-ultraviolet data 4 Discussion 5 Conclusion Acknowledgements References keywords: ddo; figure; formation; galaxy; line; spectra; star; velocity cache: ap-9973.pdf plain text: ap-9973.txt item: #1648 of 1656 id: ap-9974 author: Hudec, René; Maršíková, Veronika; Inneman, Adolf; Oberta, Peter; Pína, Ladislav title: Czech contribution to AHEAD2020: novel/alternative X-ray optics date: 2025 words: 3643 flesch: 60 summary: Keywords: X-ray optics, X-ray telescopes, Kirkpatrick-Baez, ray-tracing, X-ray optical tests. We briefly present selected results in the field of X-ray optics obtained within the project at the CTU in Prague in collaboration with other Czech Institutes, mainly Rigaku Prague, where X-ray optics modules were assembled. keywords: eye; figure; lobster; modules; optics; prague; ray cache: ap-9974.pdf plain text: ap-9974.txt item: #1649 of 1656 id: ap-9975 author: Tichý, Vladimír; Němcová, Šárka; Hudec, René; Míka, Martin title: Nanosatellite X-ray lobster eye optics – measurement of optical performance date: 2025 words: 2143 flesch: 60 summary: Lobster eye X-ray optics. Keywords: Lobster eye, multi-foil optics, reflective optics, grazing incidence optics, X-ray optics. keywords: eye; figure; lobster; optics; ray cache: ap-9975.pdf plain text: ap-9975.txt item: #1650 of 1656 id: ap-9976 author: Bagoly, Zsolt title: The two-point correlation function of the GRBs date: 2025 words: 4257 flesch: 55 summary: Revisiting the statistical isotropy of GRB sky distribution. Short GRBs are likely produced by the merger of compact objects, such as neutron stars or black holes, as proven by kilonova observations keywords: bursts; correlation; data; distribution; exposure; function; gamma; grbs; point; ray; sky cache: ap-9976.pdf plain text: ap-9976.txt item: #1651 of 1656 id: ap-9978 author: Varga, Nóra; Joó, András Péter; Koncz, Bendegúz title: A study of X-ray point sources in Heiles Clouds 1 and 2 date: 2025 words: 10051 flesch: 80 summary: +25.94067833689,eq=ICRS&- c.rs=0.004 0.44 6.36 × 10−16 9.58 × 10−17 IV/38/tic -c=070.41179395162 +25.94078969880,eq=J2000&- c.rs=0.004 0.44 1.05 × 10−15 4.39 × 10−16 I/305/out GSC2.3===N9RV004914&-c=070.411814 +25.940912,eq=J2000&-c.rs=0.00 0.47 8.33 × 10−16 3.14 × 10−16 I/305/out GSC2.3===N9RV004914&-c=070.411814 +25.940912,eq=J2000&-c.rs=0.00 0.48 1.12 × 10−15 3.14 × 10−17 II/349/ps1 -c=070.411801850 +25.940684730,eq=J2000&- c.rs=0.004 0.48 1.37 × 10−15 3.14 × 10−17 J/AJ/156/241/table4 recno=2882736 0.48 6.47 × 10−16 6.22 × 10−18 IV/34/epic ID=248018164&-c=070.411763 +25.940765,eq=J2000&-c.rs=0.004 0.48 1.11 × 10−15 3.11 × 10−17 I/353/gsc242 -c=070.41180397042 × 10−14 2.40 × 10−16 VIII/112/spsc250 recno=263696 249.99 1.95 × 10−14 3.60 × 10−16 VIII/112/spsc250 recno=263696 363.00 5.78 × 10−15 8.26 × 10−16 J/ApJ/849/63/ysos recno=109 886.96 2.00 × 10−16 2.84 × 10−17 J/ApJ/771/129/table2 recno=171 1300.00 5.88 × 10−17 5.07 × 10−18 J/ApJ/872/158/table4 recno=176 1332.41 5.74 × 10−17 4.95 × 10−18 J/ApJ/771/129/table2 recno=171 129 N. Varga, A. P. Joo, B. Koncz Acta Polytechnica Table 4. keywords: 10−15 j; = j2000&c.rs=0.004; cloud; field; gsc242; i/353; icrs&c.rs=0.004; ii/368; ray; sources; sstsl2; v/154; ysos; × 10−15 cache: ap-9978.pdf plain text: ap-9978.txt item: #1652 of 1656 id: ap-998 author: Ficker, T. title: Dimension of Fracture Surfaces date: 2007 words: 2692 flesch: 67 summary: The generalized Balshin function then reads � � �� � � �� � � �� � � � � 0 0 0 01 1 0 1 1 * ( ) , , P P s P b s b P k k cr cr 0 0 0 0� � �� � �* * , Pk cr , (5) where P is total porosity and � is compressive strength of the sample with a virtually incompressible fluid filling at least a part of its pore space. If the fracture surface were a perfect Euclidean plane (S � 2), expression (7) would lead to the well-known equation D Di i * � 1. keywords: dimension; fractal; fracture; � � cache: ap-998.pdf plain text: ap-998.txt item: #1653 of 1656 id: ap-9983 author: Granja, Carlos; Chanal, Herve; Zach, Václav; Chvátil, David; Oancea, Cristina; Poklop, Dušan; Olšanský, Václav; Jakůbek, Jan title: High-resolution mapping of secondary cosmic rays with miniaturised stacked pixel telescope date: 2025 words: 5220 flesch: 58 summary: Keywords: Cosmic rays, particle tracking, radiation imaging, particle telescope, pixel detectors. The detec- tion and visualisation of cosmic ray tracks are shown in Figure 4. keywords: cosmic; data; detector; energy; figure; particle; pixel; rays; telescope; timepix3; tracker; tracks cache: ap-9983.pdf plain text: ap-9983.txt item: #1654 of 1656 id: ap-9987 author: Poggiani, Rosa title: Review: the landscape of gravitational wave astronomy date: 2025 words: 7648 flesch: 53 summary: [22] A. J. Levan, J. D. Lyman, N. R. Tanvir, et al. [Erratum: Astronomy & Astrophysics 652:C4, 2021]. https://doi.org/10.1051/0004-6361/201833910 [53] A. G. Riess, W. Yuan, L. M. Macri, et al. keywords: abbott; binary; et al; gravitational; gw170817; journal; letters; mass; merger; neutron; review; star; wave cache: ap-9987.pdf plain text: ap-9987.txt item: #1655 of 1656 id: ap-9988 author: Karkun, Mohammad Suhel title: 3U CubeSat mechanical design and subsystems date: 2025 words: 5820 flesch: 45 summary: Thermal management For 3U CubeSat, thermal management is crucial to keeping payloads and onboard electronics at the ideal operating temperature. 3U CubeSat rails. keywords: communication; components; control; cubesat; deployment; design; figure; launch; mission; power; rails; space; subsystems cache: ap-9988.pdf plain text: ap-9988.txt item: #1656 of 1656 id: ap-999 author: Frydryšková, J. title: UNRRA and Support for Science date: 2008 words: 1252 flesch: 49 summary: Partici- pation in reconstruction was not a part of UNRRA activities, and there was no long-term cooperation in economic pro- grams and agreements. Scholarship hold- ers, who had been proposed by the government itself, were appointed as UNRRA experts when they returned home. keywords: countries; program; unrra; war cache: ap-999.pdf plain text: ap-999.txt