Bibliography
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- app01-2298
- author: Giovannelli, Franco; Sabau-Graziati, Lola
- title: Old and New from Multifrequency Astrophysics
- date: 2014-12-04
- words: 9079
- flesch: 60
- summary: Such history is marked by three main experimen- tal witnesses supporting the Big Bang theory (e.g. Giovannelli & Sabau-Graziati, 2008): the light ele- ment abundances (Burles, Nollett & Turner, 2001); the CMBR temperature at various redshifts as deter- mined by Srianand, Petitjean & Ledoux (2000), and 3 Franco Giovannelli, Lola Sabau-Graziati the references therein; the CMB at z = 0 as result of COBE (TCMBR(0) = 2.726 ± 0.010 K), which is well fitted by a black body spectrum (Mather et al., 1994). 11 Cataclysmic Variables The detection of CVs with the INTEGRAL observa- tory (Barlow et al., 2006) have recently renewed the interest of high energy astrophysicists for such systems, and subsequently involving once more the low–energy astrophysical community.
- keywords: abdo; active; apj; astronomy; astrophysics; background; beall; behaviour; black; bologna; center; chaty; compact; compositori; cosmic; cosmic sources; dark; data; detection; different; e.g.; ebl; eds; emission; energies; energy; energy cosmic; et al; evolution; experiments; extragalactic; fermi; fields; formation; frontier; galactic; galaxies; galaxy; gamma; gev; giovannelli; graziati; grbs; high; high energy; important; italian; italy; j.h; jets; large; light; magnetic; mannocchi; mass; matter; mem; model; multifrequency; nature; neutrino; neutron; new; nuclei; objects; observations; open; optical; origin; paper; particle; physical; physics; problems; processes; radiation; radio; ray; rays; references; reionization; results; review; sabau; sait; society; sources; space; spectrum; star; systems; tev; time; uhecrs; universe; vhe
- versions: original; plain text
- app01-2299
- author: Spurio, Maurizio
- title: Gamma-rays, Neutrinos and Particle Astronomy as Messengers of the Universe
- date: 2014-12-04
- words: 4300
- flesch: 59
- summary: 13 Acta Polytechnica CTU Proceedings 1(1): 13–19, 2014 13 doi: 10.14311/APP.2014.01.0013 γ-Rays, ν’s and Particle Astronomy as Messengers of the Universe Maurizio Spurio1 1Dipartimento di Fisica e Astronomia Università di Bologna and INFN Corresponding author: spurio@bo.infn.it Abstract Observations of charged cosmic-rays, γ-rays and neutrino are possible thanks to the availability of new detectors coming from technologies typical of experimental particle physics. 1 Introduction The multimessenger inter-correlation between Cosmic Rays (CRs), γ-rays and neutrinos is of fundamental importance for a deeper comprehension of high energy (HE) processes in astrophysical sources.
- keywords: accelerated; acceleration; antimatter; associated; astronomy; astrophysics; atmospheric; background; charged; cosmic; crs; decay; earth; emission; energies; energy; events; expected; extragalactic; fields; fig; figure; flux; galactic; galaxy; gev; high; icecube; lat; line; magnetic; matter; measurements; mesons; models; neutrino; objects; observed; origin; particles; present; processes; production; protons; radiation; range; rays; recent; satellites; secondary; sources; space; spectrum; telescopes; tev; universe
- versions: original; plain text
- app01-2302
- author: Regis, Marco
- title: A Novel Approach in the WIMP Quest: Cross-Correlation of Gamma-Ray Anisotropies and Cosmic Shear
- date: 2014-12-04
- words: 2530
- flesch: 65
- summary: Right: γ-ray angular PS at E > 1 GeV for the same models of the left panel. For γ-ray sources we consider the flux above 1
- keywords: angular; camera; collab; contribution; correlation; cosmic; cross; egb; emission; energy; et al; fermi; figure; galactic; gamma; gravitational; halos; lensing; matter; novel; ray; rays; shear; signal; sources; wimp; window
- versions: original; plain text
- app01-2304
- author: Auriemma, Giulio
- title: LHC, Astrophysics and Cosmology
- date: 2014-12-04
- words: 4415
- flesch: 69
- summary: [15] J. Ellis,G. Ridolfi,F. Zwirner, Physics Letters B 262 (4) (1991) 477 – 484. doi:10.1140/epjc/s10052-013-2469-8 [16] M. Carena, et al. Phys.Rev. D83 (2011) 055007 arXiv:1011.5304. [34] C. Aalseth, et al. Phys.Rev.Lett.
- keywords: annihilation; arxiv; boson; candidates; cm3s−1; cms; collaboration; cosmology; coupling; cross; dark; density; energy; et al; field; figure; galactic; gev; hep; higgs; lhc; limit; mass; masses; matter; minimal; model; neutral; neutralino; particles; phys.lett; phys.rev; physics; possible; potential; production; range; rate; rays; ref; scalar; search; searches; section; spin; susy; tev; upper; value; wimp
- versions: original; plain text
- app01-2340
- author: Biermann, Peter L.; Harms, Benjamin C.
- title: Gravitational Waves and Dark Energy
- date: 2014-12-04
- words: 4327
- flesch: 69
- summary: Institut für Kernphysik, Germany 4Department of Physics, University of Alabama at Huntsville, AL, USA 5Department of Physics & Astronomy, University of Bonn, Germany Corresponding author: bharms@bama.ua.edu Abstract The idea that dark energy is gravitational waves may explain its strength and its time-evolution. A possible concept is that dark energy is the ensemble of coherent bursts (solitons) of gravitational waves originally produced when the first generation of super-massive black holes was formed.
- keywords: background; biermann; black; brane; consistent; constant; dark; dark energy; density; emission; energy; equation; evolution; formation; generation; gravitational; gravitons; gravity; h(t; harms; holes; massive; mbh; model; momentum; n(k; order; original; p.l; phys; planck; possible; r(t; rate; redshift; rev; solitons; stimulated; strong; super; time; timing; today; universe; waves; weak; ρde(t
- versions: original; plain text
- app01-2341
- author: Iglesias-Groth, Susana
- title: Fullerenes, PAHs, Amino Acids and High Energy Astrophysics
- date: 2014-12-04
- words: 2677
- flesch: 43
- summary: 2.3 Gamma Radiolysis of C60 fullerene in water and water/ammonia mixtures; relevance of fullerenes fate in ices of interstellar medium [14] Iglesias-Groth,S.,Cataldo, F. & Man- chado, A. 2011 , MNRAS, 413, 213 doi:10.1111/j.1365-2966.2011.18124.x [15] Iglesias-Groth, S. & Esposito, M. 2013,ApJL ,776, L2 doi:10.1088/2041-8205/776/1/L2 [16] Iglesias-Groth, S., Hafez, Y., Angelini, G. & Cataldo, F. 2013, in press [17] Kroto, H. W. et al. 1985, Nature, 318, 162 [18] Léger, A. & Puget, J. 1984, A&A, 137,5 [19] Nuevo, M., Milam, S. N.& Sandford, S. A. 2012, AsBio 12, 295 [20] Pizzarello, S. & Cronin, J. R. 2000,GeCoA,64, 329 doi:10.1016/S0016-7037(99)00280-X [21] Ricca, A., Bakes, E. L. O. & Bauschlicher, C. W., Jr. 2007, ApJ, 659, 858 doi:10.1086/512037 [22] Salama, F., Bakes, E. L. O., Allamandola, L. J.& Tielens, A. G. G. M. 1996, ApJ, 458, 621 [23] Zhang, Y., Kwok, S. 2011,ApJ , 730, 126 doi:10.1088/0004-637X/730/2/126 41 http://dx.doi.org/10.1111/j.1365-2966.2009.15457.x http://dx.doi.org/10.1111/j.1365-2966.2012.21006.x http://dx.doi.org/10.1086/422216 http://dx.doi.org/10.1086/518832 http://dx.doi.org/10.1111/j.1365-2966.2011.18124.x http://dx.doi.org/10.1088/2041-8205/776/1/L2 http://dx.doi.org/10.1016/S0016-7037(99)00280-X http://dx.doi.org/10.1086/512037 http://dx.doi.org/10.1088/0004-637X/730/2/126 Introduction Astrophysical Searches for Fullerenes New results on ionised fullerenes: C60+ The stability of C60 and C70 towards copuscular and radiation Gamma Radiolysis of C60 fullerene in water and water/ammonia mixtures; relevance of fullerenes fate in ices of interstellar medium Stability Toward High Energy Radiation of Non-Proteinogenic Amino Acids: Implications for the Origins of Life Conclusions
- keywords: acids; amino; astrophysical; bands; c60; carbon; cataldo; energy; et al; fullerenes; gamma; groth; high; ices; iglesias; infrared; interstellar; laboratory; laguna; medium; mnras; molecules; nebulae; pahs; planetary; radiation; radiolysis; recent; stability; water; work
- versions: original; plain text
- app01-2343
- author: Rubino-Martín, José Alberto
- title: Planck 2013 Cosmology Results: a Review
- date: 2014-12-04
- words: 3294
- flesch: 52
- summary: Finally, deviations from the simplest inflationary scenario are discussed in Planck Collaboration XVI and XXII (2013), including tests of specific inflation- ary models, isocurvature modes, and broken scale- invariance. In March 2013, we have released the Planck catalogue of SZ sources (PSZ1) based on the nominal mission maps (Planck Collaboration XXIX 2013).
- keywords: a&a; a&a subm; agreement; angular; base; clusters; cmb; collaboration; constraints; cosmic; cosmological; cosmology; data; esa; et al; evidence; figure; galactic; galaxy; ghz; hfi; high; large; lensing; likelihood; low; main; maps; matter; measurements; mission; model; parameters; planck; planck collaboration; polarization; power; results; scale; sky; spectrum; subm; temperature; values; xvi
- versions: original; plain text
- app01-2345
- author: Colafrancesco, Sergio
- title: Multi-Frequency Study of the SZ Effect in Cosmic Structures
- date: 2014-12-04
- words: 7361
- flesch: 50
- summary: Planck detected SZE clusters are followed-up with a multi-frequency observation program in the X-rays, SZE, optical bands to obtain confirmation, redshift es- timation and estimates of the global physical param- eters. Thermal SZE spectrum (contin- uous line in bottom panel), compared to the atmo- spheric transmission of a dry, cold, atmosphere (top panel, PWV= 0.5 mm), and to spectra of the non- thermal SZE (dotted line), of CMB anisotropy and kine- matic SZE (dashed line), and of dust anisotropy (dot- dashed line).
- keywords: a&a; additional; analysis; apj; astrophysical; atmospheres; band; bullet; cavities; cavity; cluster; cmb; colafrancesco; combination; cosmic; cosmological; crucial; distribution; effect; electron; emission; energy; field; figure; frequency; fundamental; galaxy; galaxy clusters; ghz; high; ics; impact; information; intensity; kev; like; line; lobes; lss; magnetic; massive; measurements; merging; multi; nature; new; non; nonthermal; observations; overall; planck; plasma; polarization; population; presence; pressure; properties; radiation; radio; range; ray; relativistic; scale; scattering; sensitivity; shows; sources; spatial; spectral; spectroscopic; spectrum; structures; study; sze; sze observations; sze polarization; sze spectrum; temperature; thermal; thermal sze; universe; use; value; wide
- versions: original; plain text
- app01-2347
- author: Krumpe, Mirko; Miyaji, Takamitsu; Coil, Alison L.
- title: Clustering Measurements of broad-line AGNs: Review and Future
- date: 2014-12-04
- words: 5567
- flesch: 53
- summary: For the first time, AGN clustering measurements will reach a level of precision that will not only allow for an alternative approach to answering open questions in AGN and galaxy co-evolution but will open a new frontier, allowing us to precisely determine cosmological parameters. We summarize how clustering is measured and which constraints can be derived from AGN clustering measurements, we discuss recent developments, and we briefly describe future projects that will deliver extremely large AGN samples which will enable AGN clustering measurements of unprecedented accuracy.
- keywords: agn; agn clustering; agns; apj; area; bias; black; broad; class; clustering; clustering measurements; coil; constraints; correlation; cosmic; cosmological; dark; density; different; distribution; dmh; dmhs; erosita; et al; evolution; field; formation; function; future; galaxies; galaxy; halo; high; hod; host; krumpe; large; line; luminosity; mass; matter; measurements; mnras; models; number; objects; observed; parameters; physical; physics; processes; redshifts; samples; scale; sky; small; spatial; spectroscopic; studies; uncertainties; understanding; universe
- versions: original; plain text
- app01-2348
- author: Yoon, Sung-Chul
- title: Evolution of Massive Population III Stars
- date: 2014-12-04
- words: 2487
- flesch: 54
- summary: In this paper, I discuss the current understandings on the evolution of massive Pop III stars, focusing on the role of rotation in the stellar evolution (e.g., Marigo et al. 2003; Ekström et al. 2008; Yoon et al. 2012). By contrast, it is believed that massive Pop III stars do not experience significant mass-loss because they are generally very stable (Baraffe et al. 2001).
- keywords: a&a; angular; apj; che; chemical; core; et al; evolution; heger; iii; initial; langer; loss; main; masses; massive; mixing; momentum; pop; population; rotating; rotation; sequence; stars; stellar; supernovae; surface; universe; velocity; woosley; yoon
- versions: original; plain text
- app01-2349
- author: Boller, Thomas
- title: Forty Years of X-Raying Narrow-Line Seyfert 1 Galaxies
- date: 2014-12-04
- words: 2676
- flesch: 58
- summary: The main reasons for the steep X-ray spectra of NLS1s are the low masses of the black hole and the very high accretion rates (Boller et al. 1996). A power-law plus absorption edge model, a partial covering model and an ionized reflection disk model are shown with their corresponding residua. 2002, Boller, Fabian, Sunyaev, Trümper In 2002 we (Boller et al., 2002) have discovered the first sharp spectral drop at around 7 keV without any noticeable Fe K emission.
- keywords: accretion; agn; black; boller; brandt; disc; emission; erosita; extreme; fabian; foschini; fwhm; galaxies; high; hole; larger; law; line; model; narrow; new; nls1s; observations; optical; photon; power; ray; reflection; science; seyfert; spectra; strong; survey; s−1; values; years
- versions: original; plain text
- app01-2351
- author: Sani, Eleonora
- title: AGN/Starburst Connection
- date: 2014-12-04
- words: 3725
- flesch: 66
- summary: The availability of a reliable measure of the relative AGN/SB contribution to ULIRGs (Risaliti et al. 2006, Sani et al. 2008, Nardini et al. 2008) allows a quanti- tative investigation of the relation between total lumi- nosity and AGN contribution. Only in nearby sources like Mrk 231 is possible to detect strong molecular out- flows (Feruglio et al. 2010, Fisher et al. 2010) acting on kpc scales as expected by QSO-feedback models.
- keywords: a&a; activity; agn; agns; apj; apjl; connection; data; dust; emission; et al; evolution; feedback; formation; galaxies; galaxy; gas; growth; imaging; iras; line; local; luminosity; major; mass; merger; mnras; nardini; ngc; obscured; optical; processes; qso; ray; risaliti; sani; scenario; sources; spectroscopy; starburst; type
- versions: original; plain text
- app01-2352
- author: Guainazzi, Matteo
- title: Cosmological Evolution of the Central Engine in High-Luminosity, High-Accretion Rate AGN
- date: 2014-12-04
- words: 4231
- flesch: 49
- summary: Blue: thermal emission from a lu- minous accretion disk with a temperature at the inner- most radius of 30 eV; red: unsaturated Comptonisation of soft disk photons with kTe=100 keV and τes=1; ma- genta: reflection from a plane-parallel infinite slab of cold (∼104K) matter (Compton continuum plus Fe and Nickel Kα and Kβ fluorescent emission lines; after Nan- dra et al. 2007) Sizable samples of X-ray selected AGN up to red- shift '6 have been collected by difference catalogues and surveys: Exceptions to this rules are '3% in large AGN X-ray spectroscopic surveys (Mateos et al. 2010), and can be easily explained by variability between non-simultaneous optical and X-ray observa- tions, X-ray obscuration by matter in the host galaxy, or even classification issues in poor-quality optical spec- tra.
- keywords: 2005; a&a; accretion; agn; apj; band; bianchi; black; central; central engine; contribution; corona; cosmological; different; disk; elvis; emission; energy; engine; et al; evolution; fabian; fluorescent; galaxies; gas; guainazzi; high; hole; kev; lines; luminosity; mass; massive; miller; mnras; nandra; narrow; nearby; nuclear; observables; optical; phase; probe; properties; qso; quasar; radio; rate; ray; redshift; results; review; risaliti; sample; scenario; sed; share; sources; spectra; surveys; torus
- versions: original; plain text
- app01-2354
- author: Muñoz-Tuñon, Casiana; Almeida, Jorge Sanchez; Elmegreen, Debra M.; Elmegreen, Bruce G.
- title: Star Formation in Tadpole Galaxies
- date: 2014-12-04
- words: 3648
- flesch: 63
- summary: Twenty-one of them were previously identified as XMP galaxies in the literature, and 11 were new. XMP galaxies are rare; they represent 0.01% of the emission lines galaxies in SDSS/DR7.
- keywords: almeida; almeida et; apj; center; class; curve; disk; doi:10.1088/0004; elmegreen; et al; figure; flux; formation; galaxies; galaxy; gas; head; high; lines; local; low; metallicity; muñoz; nearby; objects; oxygen; phase; poor; profiles; properties; redshift; result; rotation; sample; sánchez; search; slit; solid; star; tadpole; targets; tuñón; universe; velocity; xmp
- versions: original; plain text
- app01-2355
- author: Persi, Paolo; Tapia, Mauricio
- title: The Formation of Massive Stars: from Herschel to Near-Infrared
- date: 2014-12-04
- words: 2535
- flesch: 65
- summary: 2 IRAS19388+2357(Mol110) IRAS 19388+2357 is associated with H2O maser emis- sion (Palla et al. 1991; Brand et al. 1994), a ra- dio source (Hughes & MacLeod 1994; Molinari et al. 1998) and dense molecular gas traced in NH3 by Moli- nari et al. (1996) who renamed as Mol110. (2006) by using the fitting tool of Robitaille et al.
- keywords: a&a; arcsec; band; et al; far; figure; formation; herschel; high; images; infrared; iras; mass; molinari; msun; narrow; near; palla; position; region; source; spitzer; star
- versions: original; plain text
- app01-2356
- author: Orlando, Salvatore; Reale, Fabio; Peres, Giovanni; Mignone, Andrea
- title: Mass Accretion Processes in Young Stellar Objects: Role of Intense Flaring Activity
- date: 2014-12-04
- words: 2982
- flesch: 55
- summary: In this paper we review our findings and present preliminary results of a study investigating the effects of a storm of small-to-medium flares on the stability of accretion disks (Orlando et al. 2014). di Fisica Generale, Università degli Studi di Torino, via Pietro Giuria 1, 10125, Torino, Italy Corresponding author: orlando@astropa.inaf.it Abstract According to the magnetospheric accretion scenario, young low-mass stars are surrounded by circumstellar disks which they interact with through accretion of mass.
- keywords: accretion; activity; bright; circumstellar; close; disk; effects; et al; field; flares; flaring; heat; hours; intense; magnetic; mass; material; mhd; model; orlando; orlando et; panel; ray; rotation; simulation; single; stability; star; stellar; storm; strong; surface; system; young
- versions: original; plain text
- app01-2360
- author: Nesci, Roberto; Rossi, Corinne; Frasca, Antonio; Marilli, Ettore; Persi, Paolo; Cornero, Nicola
- title: V2282 Sgr Revisited
- date: 2014-12-04
- words: 2380
- flesch: 66
- summary: 118 Acta Polytechnica CTU Proceedings 1(1): 118–122, 2014 118 doi: 10.14311/APP.2014.01.0118 V2282 Sgr Revisited Roberto Nesci1, Corinne Rossi2, Antonio Frasca3, Ettore Marilli3, Paolo Persi1, Nicola Cornero4 1INAF-IASF, via Fosso del Cavaliere 100, 00133 Roma, Italy 2University La Sapienza, P.le A. Moro 2, 00186 Roma, Italy 3INAF/OACt, Catania, Italy 4CDSO, Aosta, Italy Corresponding author: roberto.nesci@iaps.inaf.it Abstract The nature of V2282 Sgr is examined on the basis of several multiband observations: a 20 years long I-band light curve of V2282 Sgr obtained from archive photographic plates of the Asiago and Catania Observatories; a CCD R-band light curve obtained at Cornero Observatory; JHK photometry from 2MASS and UKDISS; Spitzer IRAC and MIPS images; optical spectra from Loiano Observatory; X-ray flux from CHANDRA. The overall evidences suggest that V2282 Sgr is a Pre Main Sequence star with an accretion disk.
- keywords: absorption; asiago; band; catania; circumstellar; comparison; curve; emission; flux; infrared; italy; kpc; light; lines; log; m20; mag; main; observations; observatory; observed; optical; plates; sequence; sgr; spectra; spectrum; star; stellar; table; type; v2282; variable
- versions: original; plain text
- app01-2362
- author: Gómez-Morán, Ada Nebot; Motch, Christian
- title: A Multi-Wavelength View of the XMM-Newton Galactic Plane
- date: 2014-12-04
- words: 2662
- flesch: 63
- summary: This example reflects the diffi- culty of multi-wavelength identification of X-ray sources in the Galactic Plane. Binary population models predict a population of X-ray binaries at low luminosities, pre- HMXBs and pre-low-mass X-ray binaries that would be accreting matter coming from the wind of the compan- ion star at low rates rather than from Roche lobe over- flow (Willems & Kolb 2003, Pfahl et al 2002).
- keywords: a&a; binaries; centre; erg; et al; excess; expected; galactic; high; infrared; kev; latitude; low; motch; multi; nebot; newton; number; optical; plane; ray; results; sources; stars; survey; wavelength; xmm
- versions: original; plain text
- app01-2364
- author: van Soelen, Brian; Meintjes, Pieter J.
- title: Multifrequency Behaviour of the Gamma-Ray Binary System PSR B1259-63: Modelling the FERMI Flare
- date: 2014-12-04
- words: 2987
- flesch: 58
- summary: The gamma- ray binary system consists of a 48 ms pulsar, in an ec- centric (e = 0.87) 3.4 year orbit around a Be star (e.g. Johnston et al., 1992, 1994), with a spin-down luminos- ity of Ė = 8.3 × 1035 erg s−1 (e.g. Wang et al., 2004). 2.1 Radio behaviour PSR B1259-63 was originally detected as a radio pul- sar during a galactic plane survey undertaken with the 64 m Parkes radio telescope (Johnston et al., 1992b).
- keywords: apj; b1259; behaviour; circumstellar; detection; disc; distribution; e.g.; emission; et al; fermi; flare; flux; gamma; gev; johnston; light; meintjes; mnras; modelling; multifrequency; observations; passage; periastron; psr; pulsar; radio; ray; reported; soelen; system; van; vhe; wind
- versions: original; plain text
- app01-2366
- author: Castellina, Antonella
- title: Auger Highlights
- date: 2014-12-04
- words: 3558
- flesch: 58
- summary: 132 Acta Polytechnica CTU Proceedings 1(1): 132–138, 2014 132 doi: 10.14311/APP.2014.01.0132 Auger Highlights Antonella Castellina 1 for the Pierre Auger Collaboration 2 1Istituto Nazionale di Astrofisica - OATo and INFN Torino 2Observatorio Pierre Auger, Av. If on the other hand the proton component is depleted by the reach of a rigidity dependent end of the injection spectrum, and if sources are uniformly distributed, hard injection spectra with low energy cut- off, together with local sources, could explain the data [15, 16]. Figure 3: The Pierre Auger data in the (< lnA > ,σ2lnA) plane for different hadronic interaction models.
- keywords: anisotropy; array; arrival; auger; auger collaboration; collaboration; comparison; composition; cosmic; cosmic rays; data; different; directions; distribution; earth; eev; energies; energy; events; extragalactic; figure; flux; function; future; hadronic; high; hybrid; information; interaction; limits; mass; models; nature; neutrinos; physics; pierre; pierre auger; primary; rays; results; scale; showers; sources; spectrum; systematic; telescope; time; uncertainties; upper; xmax
- versions: original; plain text
- app01-2368
- author: Morselli, Aldo
- title: Latest Results from the Fermi Gamma-Ray Telescope
- date: 2014-12-04
- words: 4041
- flesch: 64
- summary: [Fermi Coll.], ApJ 697 (2009) 1071-1102 [arXiv:0902.1089] doi:10.1088/0004-637X/697/2/1071 [3] Benoit Lott, this conference [4] M.Ackermann et al. [17] and Fermi LAT
- keywords: analysis; annihilation; apj; astrophysical; break; bremsstrahlung; center; coll; collaboration; cosmic; cross; dark; data; decay; doi:10.1103; dwarf; electrons; emission; energy; et al; fermi; fermi coll; figure; fit; galactic; gamma; gev; halo; high; indirect; large; lat; limits; lines; matter; measurements; mev; model; morselli; new; pamela; phys; positron; protons; ray; rays; region; results; rev; search; searches; set; signal; sources; spectra; spectrum; telescope; tev; upper; wimp; years
- versions: original; plain text
- app01-2371
- author: Ebisawa, Ken; Iso, Naoki; Miyakawa, Takehiro; Inoue, Hajime
- title: Origin of X-ray Spectral Variation and the Seemingly Broad Iron-Line Spectral Feature in Seyfert Galaxies
- date: 2014-12-04
- words: 2586
- flesch: 60
- summary: In the present paper, we explore the Suzaku archive to select Seyfert galaxies which show similar X-ray spectral characteristics to MCG-6-30-15, and apply the VPC model to see if their X-ray intensity and spectral variations are explained by this model or not. [3] Miller, L., Turner, L. J., & Reeves, J. N. 2010, MNRAS, 408, 1928 doi:10.1111/j.1365-2966.2010.17261.x [4] Miyakawa, T., Ebisawa, K. & Inoue, H. 2012, PASJ, 64, 140 [5] Zoghbi, A. et al. 2010, MNRAS, 401, 2419 doi:10.1111/j.1365-2966.2009.15816.x DISCUSSION MATTEO GUAINAZZI: (1) It has been recently proposed that the discovery of soft X-ray lags on time-scales consistent with reverberation from a few Schwarzschild radii constitute a very strong evidence supporting relativistic disk reflection as a driver of X- ray variability.
- keywords: covering; data; ebisawa; energy; figure; fraction; galaxies; intensity; iron; kev; line; mei2012; miyakawa; model; ngc; observations; observed; partial; ray; seyfert; slice; sources; spectra; time; variable; variations; vpc
- versions: original; plain text
- app01-2373
- author: Di Sciascio, Giuseppe
- title: ARGO-YBJ: Highlights and Prospects
- date: 2014-12-04
- words: 3350
- flesch: 65
- summary: 3.1 The Compton-Getting effect The origin of CR anisotropies is still unknown there- fore, the observation of an expected anisotropy is im- portant to check the reconstruction algorithms, the ex- posure and background calculations and the stability of the detector performance. For a detailed description of the detector performance see (Aielli et al., 2006, Aielli et al. 2009, Bartoli et al., 2011).
- keywords: anisotropy; argo; array; cosmic; data; declination; detector; different; direction; distribution; energy; experiment; field; fig; figure; galactic; gamma; gev; lhaaso; limits; line; map; observation; observed; physics; plane; range; ray; rays; region; results; s.d; sciascio; shower; significance; sky; sources; study; tev; time; upper; water; wide; ybj
- versions: original; plain text
- app01-2374
- author: Pittori, Carlotta
- title: AGILE Highlights after Six Years in Orbit
- date: 2014-12-04
- words: 3882
- flesch: 59
- summary: AGILE is char- acterized by a very large field of view (∼ 3 sr), a good angular resolution, 0.1 - 0.2 degrees in gamma rays and 1-2 arcminutes in X rays, and a small dead time (100 µs), which make it a very good instrument to study per- sistent and transient gamma-ray sources even on very short timescales. [13] Feroci, M. et al., 2007, NIM A 581, 728.
- keywords: a&a; adc; agile; analysis; apj; asdc; asi; catalog; center; crab; cygnus; data; discovery; emission; energies; energy; et al; fermi; figure; flares; galactic; gamma; gev; grb; grid; ground; high; highlights; important; lat; list; low; m. et; mev; nebula; new; observations; observed; period; pittori; pointing; range; ray; rays; region; satellite; science; sources; spectral; study; system; tavani; tgf; time; timescales; web; years
- versions: original; plain text
- app01-2376
- author: Meintjes, Pieter J.; Nkundabakura, Pheneas; van Soelen, Brian; Odendaal, Alida
- title: Modelling the Multifrequency SED of AGN Candidates among the Unidentied EGRET and Fermi Gamma-Ray Sources
- date: 2014-12-04
- words: 4209
- flesch: 66
- summary: The SEDs of the sample of EGRET sources and the associated Fermi- LAT counterparts are presented in Fig. NIR EGRET 3EG J1813-6419 FERMI e.) 3EG J1813-6419 Figure 7: The multifrequency SEDs for the sample of EGRET sources.
- keywords: 1e-15; 3eg; abdo; agn; apj; associated; bel; cen; compton; counterparts; data; egret; emission; energies; energy; fermi; fig; figure; galactic; galaxies; gamma; gev; high; j0724; j1300; j1659; j1709; j1813; lat; meintjes; mev; non; opt; photons; radio; ray; rieger; sample; sed; seyfert; sources; spectral; spectrum; ssc; telescope; unidentified; variability
- versions: original; plain text
- app01-2378
- author: Schartel, Norbert
- title: Black Hole Results from XMM-Newton
- date: 2014-12-04
- words: 3341
- flesch: 71
- summary: The strong gravitational field Currently, X-ray observations are the only way to ob- serve the strong gravitational field in the direct vicinity of black holes and neutron stars ([14]). A periodicity of ˜1hour in X-ray emission from the active galaxy RE J1034+396.
- keywords: a&a; absorption; accretion; active; agn; apj; black; black hole; chandra; december; disk; doi:10.1038; emission; energy; epic; et al; evidence; fabian; february; galactic; galaxy; gravitational; highlights; hole; ionized; iron; january; low; march; mass; mnras; nature; newton; ngc; nuclei; observations; optical; outflows; radio; ray; reflection; reverberation; schartel; spectra; spectrum; spin; state; ultraluminous; ulx; xmm
- versions: original; plain text
- app01-2380
- author: Ziolkowski, Janusz
- title: Be/X-Ray Binaries with Black Holes in the Galaxy and in the Magellanic Clouds
- date: 2014-12-04
- words: 4274
- flesch: 72
- summary: [3] Casares, J., Negueruela, I. Ribo, M. et al.: 2014, Nature 505, 378. doi:10.1038/nature12916 [4] Casares, J., Ribo, M., Ribas, I. et al.: 2005, MNRAS 364, 899. doi:10.1111/j.1365-2966.2005.09617.x [5] Casares, J., Ribo, M., Ribas, I. et al.: 2012, MNRAS 421, 1103. doi:10.1007/s10509-010-0575-8 [30] Negueruela, I., Okazaki, A.T., Fabregat, J. et al.: 2001, A&A 369, 117.
- keywords: atel; binaries; binary; black; black hole; clouds; coe; compact; component; cowley; disc; emission; et al; galaxy; haberl; hole; lkowski; magellanic; mass; nature; neutron; observed; orbital; period; radio; ray; ray binaries; schmidtke; star; sturm; system; time; xrbs; zió
- versions: original; plain text
- app01-2382
- author: Bisnovatyi-Kogan, Gennady S.; Moiseenko, Sergey G.; Ardeljan, Nikolay V.
- title: Magnetorotational Explosions of Core-Collapse Supernovae
- date: 2014-12-04
- words: 4538
- flesch: 54
- summary: When the twisted toroidal component strongly exceeds the poloidal field, magneto-rotational instability develops, leading to a drastic acceleration in the growth of magnetic energy. 182 Magnetorotational Explosions of Core-Collapse Supernovae time, s 0 0.1 0.2 1 2 3 4 Erot[10 51 ergs] Ekinpol[10 51 ergs] Figure 3: Time dependence of rotational, kinetic poloidal, and magnetic energies during explosion for a dipole -like field, from [22].
- keywords: apj; ardeljan; bisnovatyi; calculations; case; collapse; contraction; core; dipole; egrav0; energies; energy; erot0; evolution; explosion; field; figure; formation; growth; initial; initial magnetic; instability; jet; kogan; line; magnetic; magnetic energy; magnetic field; magnetorotational; mass; moiseenko; mre; mri; neutrino; neutron; poloidal; poloidal magnetic; rotational; rotational energy; scheme; simulations; star; supernova; time; toroidal; velocity
- versions: original; plain text
- app01-2383
- author: Stanev, Todor
- title: Are Supernovae Responsible for the Gamma Ray Spectrum from the Galactic Center?
- date: 2014-12-04
- words: 3370
- flesch: 66
- summary: The shell supernova TeV gamma ray sources in TeV- Cat include IC443, SN1006, CassiopeiaÃ, and Tycho. One example of the Fermi/LAT studies of the diffuse gamma ray radi- ation in the Galaxy is in (Ackermann et al, 2012) where the small and large scale anisotropy is studied and the existence of unknown gamma rays sources is discussed.
- keywords: acceleration; catalog; center; close; clouds; cosmic; density; different; diffuse; electrons; energy; fermi; figure; flux; galactic; galactic center; gamma; gamma ray; gev; hess; lat; matter; models; molecular; neutrino; plane; pulsar; ray; ray sources; rays; remnants; shock; snr; sources; supernova; supernova remnants; telescopes; tev; tev gamma; wind
- versions: original; plain text
- app01-2384
- author: Sasaki, Manami
- title: Multi-Wavelength View of Supernova Remnants
- date: 2014-12-04
- words: 3461
- flesch: 62
- summary: X-ray synchrotron emission is only observed in younger SNRs and is indicative of electrons with energies of up to 1014 eV. The angular resolution of the newer X-ray tele- scopes, in particular that of the Chandra X-ray obser- vatory, made it possible to reveal narrow filaments of non-thermal X-ray emission close to the outer shock in several young SNRs: SN 1006, RX J1713.7-3946, RX J0852.0-4622, Cas A, Tycho, and Kepler. X-ray emission from CX can in principle be produced at any astrophysical site where hot plasma in- teracts with (partially) neutral gas, and was originally discoverd in X-ray data of comets (Lisse et al., 1996, Cravens, 1997).
- keywords: abundances; accelerated; apj; bright; clouds; complex; ctb; data; ejecta; electrons; emission; energies; equilibrium; et al; fig; figure; galactic; interaction; interstellar; ionization; ism; kev; lobe; nature; non; observations; plasma; radio; ray; ray emission; rays; remnants; sasaki; shell; shock; shocked; snr; snrs; spectrum; supernova; synchrotron; thermal; waves
- versions: original; plain text
- app01-2386
- author: Katsuda, Satoru; Tsunemi, Hiroshi
- title: High-Resolution X-Ray Spectroscopy of Galactic Supernova Remnants
- date: 2014-12-04
- words: 2803
- flesch: 61
- summary: 2001,A&A,365,L254 [25] van der Heyden, K. J., et al. 2002,A&A,392,955 [26] van der Heyden, K. J., et al. 2003,A&A,406,141 Most SNRs in the large/small Magellanic clouds are small enough for the gratings, and indeed over 10 papers have been published in literature (e.g., Burrows et al. 2000; Rasmussen et al. 2001; Behar et al. 2001; van der Heyden et al. 2001; 2002; 2003; Flanagan et al. 2004; Kosenko et al. 2008; 2011; Broersen et al. 2011).
- keywords: a&a; apj; broersen; ejecta; emission; et al; fig; galactic; grating; heα; high; katsuda; kev; knot; line; oxygen; puppis; ray; remnants; resolution; rgs; shock; snrs; spectra; spectroscopy; supernova; s−1; temperature; velocity; vii; winkler
- versions: original; plain text
- app01-2388
- author: Maeda, Keiichi; Terada, Yukikatsu; Bamba, Aya
- title: Expected Hard X-Ray and Soft Gamma-Ray from Supernovae
- date: 2014-12-04
- words: 2765
- flesch: 61
- summary: Conditions for the ini- tial triggers have not been clarified from the first prin- ciple (e.g., Seitenzahl et al., 2013), thus Kasen et al. (2009) adopted various conditions (i.e., distribution of the sparks) and produced a range of the ejecta models. While detecting the MeV lines from the 56Co decay has been challenged in the past, even with SPI on board INTEGRAL and 106 s exposure (Roques et al., 2003; see also Isern et al., 2013), this is limited to extremely nearby SNe Ia up to 5 - 6 Mpc (or 8 Mpc for extremely bright SNe Ia).
- keywords: 56ni; astro; days; dd2d; decay; detection; detonation; emission; energy; et al; expected; explosion; exposure; figure; hard; high; hxi; kev; lines; maeda; model; mpc; new; nucleosynthesis; nustar; range; ray; sne; soft; spectra; supernovae
- versions: original; plain text
- app01-2389
- author: Maeda, Keiichi
- title: Electron Acceleration in Supernovae and Millimeter Perspectives
- date: 2014-12-04
- words: 2775
- flesch: 58
- summary: In this paper, I argue that young SNe provide a unique site to study the electron acceleration mecha- nism. 2 Non-Thermal Emissions A situation around young SNe related to the non- thermal emission is similar to that for SNRs.
- keywords: acceleration; apj; chevalier; cooling; csm; dsa; efficiency; electron; emission; energy; fransson; frequency; ghz; injection; maeda; mechanism; model; non; observations; properties; radio; shock; sne; snrs; synchrotron; wave; young
- versions: original; plain text
- app01-2390
- author: Blay, Pere; Reig, Pablo; Reglero, Víctor
- title: Highly Magnetized Accreting Pulsars: Are There Accreting Magnetars?
- date: 2014-12-04
- words: 4523
- flesch: 56
- summary: +650, GX 301-2, IGR J16358-4726, X Per, 4U 2206+54, SXP 1062, and 3A 1954+319 are thought to possess high magnetic fields. We find, therefore, a discrepancy in magnetic field strength determination with respect to the methods shown in the previous sec- tion.
- keywords: 2010; 2012; a&a; accreting; accretion; apj; blay; crsf; data; determination; doroshenko; energy; et al; evolution; example; features; field; fig; finger; hmxrbs; igr; ikhsanov; integral; kev; large; magnetars; magnetic; magnetic field; neutron; order; panel; period; properties; pulsars; ray; reglero; reig; source; spin; spin period; star; strength; systems; wind
- versions: original; plain text
- app01-2393
- author: Morihana, Kumiko; Tsujimoto, Masahiro; Ebisawa, Ken
- title: X-Ray and Near-Infrared Spectroscopy of Dim X-Ray Point Sources Constituting the Galactic Ridge X-Ray Emission
- date: 2014-12-04
- words: 2832
- flesch: 64
- summary: We identified ∼11% of X-ray point sources with NIR and extracted NIR spectra for some of them. In fact, showed near- infrared spectra of selected X-ray sources presented in this paper, in which some thermal A sources do not exhibit the Brγ emission that is typical for the conven- tional CVs (Dhillon et al. 1997).
- keywords: active; cbf; color; component; data; dim; ebisawa; emission; energy; figure; galactic; group; grxe; hard; infrared; kev; line; model; nir; observation; plasma; point; point sources; power; ray; ray point; sirius; soft; sources; spectra; spectroscopy; spectrum; stars; thermal; type
- versions: original; plain text
- app01-2395
- author: Beilicke, Matthias
- title: The Galactic Center Region Imaged by VERITAS from 2010{2012
- date: 2014-12-04
- words: 2062
- flesch: 66
- summary: At TeV energies, the galactic center was detected at the level of 4 standard deviations with the Whipple 10 m telescope and with one order of magnitude better sensitivity by H.E.S.S. and MAGIC. (ii) The accel- erated protons diffuse out into the interstellar medium where they (iii) produce neutral pions which decay into GeV/TeV γ-rays.
- keywords: angles; apj; center; collaboration; dark; diffuse; emission; energies; energy; et al; fermi; fig; flux; galactic; gev; h.e.s.s; hadronic; lza; magic; matter; measured; mev; models; observations; position; ray; rays; region; source; spectrum; tev; veritas; whipple; zenith
- versions: original; plain text
- app01-2396
- author: Merafina, Marco; Vitantoni, Daniele
- title: Data Analysis of Globular Cluster Harris Catalogue in View of the King Models and Their Dynamical Evolution. I. Theoretical model
- date: 2014-12-04
- words: 2705
- flesch: 44
- summary: On the other hand, the observations of the lumi- nosity profiles of different GCs (King, 1962) show sim- ilar curves depending only on different values of the star concentration, giving the possibility to fit them by an empirical law and suggesting a unique distribution function for the whole sample of clusters (King, 1966). Figure 1: Mass in function of W0 for families of solu- tions at different values of the velocity dispersion (Mer- afina & Ruffini, 1989).
- keywords: catastrophe; clusters; coordinate; critical; different; distribution; effective; energy; equilibrium; evolution; expression; function; gcs; globular; gravitational; gravothermal; heat; instability; katz; king; merafina; model; potential; presence; radial; stars; system; thermodynamical; total; value; velocity; wood
- versions: original; plain text
- app01-2399
- author: Merafina, Marco; Vitantoni, Daniele
- title: Data Analysis of Globular Cluster Harris Catalogue in View of the King Models and Their Dynamical Evolution. II. Observational Evidences
- date: 2014-12-04
- words: 1950
- flesch: 61
- summary: We can instead exclude a direct relation between as- tronomical GCs populations and dynamical evolution, except for a very weak increasing of W0 peak value for disk clusters. For this kind of GCs population, the presence of a low massive main body allowed to preserve 237 Marco Merafina, Daniele Vitantoni more informations about primeval distribution features.
- keywords: age; catalogue; clusters; collapse; core; data; disk; distribution; evolution; figure; galactic; gcs; gilmore; globular; harris; king; limit; low; mackey; objects; pcc; peak; population; stability; systems; value
- versions: original; plain text
- app01-2400
- author: Parisi, Pietro
- title: Unveiling the Nature of INTEGRAL Objects: a Review
- date: 2014-12-04
- words: 3858
- flesch: 50
- summary: The most recent INTEGRAL/IBIS surveys are that of Bird et al. Ms of exposure in the 17-60 keV energy range and found 521 sources (12% unidentified); • The 9-year Galactic hard X-ray survey (Krivonos et al. 2012) collected data from December 2002 to January 2011 for 132 Ms of exposure in the 17-60 keV energy range and reported 402 sources (9% unidentified).
- keywords: a&a; accretion; agns; binaries; circles; cvs; distribution; emission; et al; extragalactic; galactic; galaxies; hard; high; hmxbs; ibis; integral; kev; line; low; magnetic; masetti; narrow; new; objects; observations; optical; parisi; plane; ray; regions; seyfert; sky; sources; spectroscopy; star; supergiant; surveys; typical; white
- versions: original; plain text
- app01-2404
- author: De Laurentis, Mariafelicia; De Martino, Ivan
- title: Testing f(R)-Theories by Binary Pulsars
- date: 2014-12-04
- words: 2405
- flesch: 60
- summary: 1 Introduction Astrophysical systems like Neutron Stars (NS), coa- lescing binary systems, Black Holes (BHs), and White Dwarfs (WDs), are the most promising to study the gravitational waves (GWs) emision. (7),we have selected a sample of rela- tivistic binary systems for which the first derivative of the orbital period is observed, we have computed the theoretical quadrupole radiation rate, and finally we have compared it to binary system observations.
- keywords: binary; capozziello; correction; derivative; difference; energy; etgs; f(r; f(r)-theories; field; f′′0; gravitational; laurentis; observed; orbital; period; phys; systems; theory; time; ṫbf(r; ṫbobs; ṫgr; values
- versions: original; plain text
- app01-2407
- author: Milano, Leopoldo; De Rosa, Rosario; De Laurentis, Mariafelicia; Garufi, Fabio
- title: Probing Gravitational Theories with Eccentric Eclipsing Detached Binary Stars
- date: 2014-12-04
- words: 2372
- flesch: 54
- summary: , we compare the effects of different theories of gravitation on the apsidal motion of eccentric eclipsing detached binary stars. 4 Discussion and Conclusion Using data coming from apsidal motion rate of EEDB we compared the variation of the relativistic term of the apsidal motion rate due to different theories of gravi- tation, that accordingly produces variation of classical Newtonian term (see Eq. 5).
- keywords: apsidal; binary; classical; different; f(r; general; gravitational; motion; napoli; newtonian; observations; observed; orbital; parameters; periastron; rate; relativistic; relativity; stars; stellar; systems; terms; test; theories; theory; trend; ω̇gr; ω̇rel
- versions: original; plain text
- app01-2408
- author: Beall, James H.
- title: A Review of Astrophysical Jets
- date: 2014-12-04
- words: 4183
- flesch: 59
- summary: doi:10.1086/444593 [29] Jorstadt, S., Marscher, A., Stevens, J., Smith, P., Forster, J. et al., 2006, in Multifrequency Behavior of High Energy Cosmic Sources, Chin. [3] Beall, J.H. et al., 1978, Ap. J., 219, 836.
- keywords: 3c454.3; agn; associated; astron; astrophysical; beall; beall et; bonning; cen; concurrent; consistent; core; cosmic; data; der; different; energy; et al; figure; flaring; frequencies; galactic; gamma; ghz; high; j.h; jet; jets; laan; launch; microquasars; mojave; moving; multifrequency; observations; optical; paper; radio; ray; region; sources; structures; time; van; variability
- versions: original; plain text
- app01-2411
- author: Perucho, Manel
- title: First Hints of Pressure Waves in a Helical Extragalactic Jet: S5 0836+710
- date: 2014-12-04
- words: 3199
- flesch: 56
- summary: The evidence points towards the peak of emission in helical jets corresponding to pressure- maxima of a wave that is generated within the core region and propagates downstream. 4 Conclusions It is possible to associate the ridge-line of emission of helical jets to wave patterns tracing a (thermal or mag- netic) pressure maximum produced by the growth of instabilities.
- keywords: a&a; amplitude; case; components; core; different; emission; et al; field; flow; frequencies; hardee; helical; instabilities; instability; jet; jets; kink; line; lobanov; magnetic; maximum; nature; observed; oscillation; p.e; perucho; pressure; radio; region; ridge; scale; structure; waves
- versions: original; plain text
- app01-2415
- author: Beall, James H.; Guillory, John; Rose, David V.; Wolff, Michael T.
- title: Multiscale Modeling of Astrophysical Jets
- date: 2014-12-04
- words: 3029
- flesch: 53
- summary: [6] Beall, J. H., Guillory, J., and Rose, D. V., 2003, AGN jet interactions with the intracluster medium, C.J.A.A., 3(Suppl.), 137. 274 Acta Polytechnica CTU Proceedings 1(1): 274–277, 2014 274 doi: 10.14311/APP.2014.01.0274 Multiscale Modeling of Astrophysical Jets James H. Beall1,2,3, John Guillory* 3, David V. Rose4, Michael T. Wolff2 1St.
- keywords: ambient; ambient medium; ap.j; astrophysical; beall; code; cross; deposition; effects; energy; et al; figure; galactic; guillory; hydrodynamic; interactions; jet; jets; loss; medium; momentum; particle; plasma; processes; rate; relativistic; results; scale; section; simulation; transfer; vh-1; wave
- versions: original; plain text
- app01-2416
- author: Meli, Athina; Ciarcelluti, Paolo
- title: Active Galactic Nuclei: Jets as the Source of Hadrons and Neutrinos
- date: 2014-12-04
- words: 3720
- flesch: 51
- summary: (iii) The acceleration in the case of quasi-parallel shocks seems very efficient and compa- rable to single shock acceleration. Γ ψ σ E[GeV] 30 75o 2.7 104.6 30 75o 2.4 105.2 10 75o 2.3 105.9 10 75o 2.2 106.4 Briefly, from the tables above, one notices that (i) the spectra by each shock in every shock-set become gradually flatter, following on one hand the findings of single relativistic shocks discussed in the previous sec- tion, and on the other hand the trends reported in e.g. Melrose and Pope (1993) and Gieseler and Jones (2000) for multiple shocks.
- keywords: 75o; accelerated; acceleration; active; agn; athina; biermann; cases; cosmic; crs; e.g.; energies; energy; field; flux; galactic; gamma; hadronic; high; jets; mechanism; meli; multiple; neutrinos; nuclei; parallel; particle; perpendicular; photon; plasma; power; primary; protons; quasi; quenby; ray; rays; relativistic; scattering; shock; shock acceleration; single; sources; spectra; spectrum; tev
- versions: original; plain text
- app01-2419
- author: Federici, Memmo; Gaibisso, Carlo; Martino, Bruno L.
- title: HAVmS: Highly Available Virtual Machine Computer System Fault Tolerant with Automatic Failback and Close to Zero Downtime
- date: 2014-12-04
- words: 2979
- flesch: 54
- summary: 278 Acta Polytechnica CTU Proceedings 1(1): 278–282, 2014 278 doi: 10.14311/APP.2014.01.0278 HAVmS: Highly Available Virtual Machine Computer System Fault Tolerant with Automatic Failback and Close to Zero Downtime Memmo Federici1, Carlo Gaibisso2, Bruno L. Martino3 1Istituto di Astrofisica e Planetologia Spaziali, INAF IAPS Via fosso del Cavaliere 100, 00133 Roma, Italy 2Istituto di Analisi dei Sistemi ed Informatica ”Antonio Ruberti”, IASI-CNR Viale Manzoni 30, 00185 Roma , Italy 3Associated INAF IAPS Corresponding author: memmo.federici@iaps.inaf.it Abstract In scientific computing, systems often manage computations that require continuous acquisition of of satellite data and the management of large databases, as well as the execution of analysis software and simulation models (e.g. Monte Carlo or molecular dynamics cell simulations) which may require several weeks of continuous run. These servers, to ensure an acceptable level of reliabil- ity, should be equipped by systems for the backup of the status of the provided services and the data they deal with.
- keywords: active; analysis; applications; architecture; automatic; availability; available; case; computer; computing; continuity; cost; data; dormant; drbd; failback; failover; fault; federici; general; havms; high; integral; machine; management; manager; remus; resources; running; server; services; software; solution; storage; synchronization; system; time; use; virtual; xen
- versions: original; plain text
- app01-2420
- author: Tluczykont, M.; Brückner, M.; Budnev, N.; Chvalaev, O.; Dyachok, A.; Epimakhov, S.; Gress, O.; Hampf, D.; Horns, D.; Ivanova, A.; Kalmykov, N.; Konstantinov, E.; Korosteleva, E.; Kozin, V.; Kunnas, M.; Kuzmichev, L.; Lubsandorzhiev, B.; Mirgazov, R.; Monkhoev, R.; Nachtigall, R.; Panasyuk, M.; Pakhorukov, A.; Poleschuk, V.; Porelli, A.; Prosin, V.; Ptuskin, V.; Rubtsov, G. I.; Satunin, P. S.; Semeney, Yu.; Spitschan, D.; Skukhin, A.; Sveshnikova, L.; Wischnewski, R.; Zagorodnikov, A.; Zirakashvili, V.
- title: The HiSCORE Project
- date: 2014-12-04
- words: 2809
- flesch: 53
- summary: [6] Cao, Z., Bi, X. J., Cao, Z., et al.: 2010, 38th COSPAR Scientific Assembly, 38, 2322 [7] Dubus, G., Contreras, J. L., Funk, S., et al.: 2013, APh, 43, 317 [8] Epimakhov, S., Brückner, M., Budnev, N. et al.: 2013, to appear in Proc. of ICRC, Rio de Janeiro, Brazil [9] Gonzalez-Garcia, M. C., Halzen, F., & Mohapatra, S.: 2009, APh, 31, 437 [10] Hampf, D., Tluczykont, M., & Horns, D.: 2013, NIMPA, 712, 137 doi:10.1016/j.nima.2013.02.016 [11] Moskalenko, I.V., Porter, T.A., Strong, A.W.: 2006, ApJL, 640 L155 doi:10.1086/503524 [12] Tluczykont, M., Hampf, D., Horns, D., et al.: 2011, Adv. 285 Martin Tluczykont et al.
- keywords: air; area; array; board; concept; cosmic; detector; energies; energy; engineering; et al; experiment; field; figure; gamma; hadron; hiscore; imaging; inch; level; light; non; origin; pev; pevatrons; physics; pmts; range; ray; rays; readout; sensitivity; shower; standard; stations; tev; threshold; time; tluczykont; trigger; tunka; tunka-133; view
- versions: original; plain text
- app01-2422
- author: Marshall, Herman L.; Schulz, Norbert S.
- title: Soft X-Ray Polarimeter: Potential Instrumentation and Observations
- date: 2014-12-04
- words: 2514
- flesch: 57
- summary: McNamara et al. (2009) recently sug- gested that X-ray polarization data could be used to de- duce the primary emission mechanism at the base, dis- criminating between synchrotron, self-Compton (SSC), and external Compton models. Schnittmann & Krolik (2009) partic- ularly show that the variation of polarization with en- ergy could be used as a probe of the black hole spin and that the polarization position angle would rotate through 90 deg between 1 and 2 keV in some cases, ar- guing that X-ray polarization measurements are needed both below and above 2 keV (fig. 1).
- keywords: 2003; agn; angle; apj; band; coated; components; detectors; energy; et al; fields; gems; gratings; high; instrument; isolated; jet; kev; magnetic; marshall; mirror; mission; multilayer; neutron; observations; optical; optics; polarimeter; polarization; potential; proceedings; ray; rays; scientific; small; soft; stars
- versions: original; plain text
- app01-2423
- author: Gómez de Castro, Ana I.; Shustov, Boris; Sachkov, Mikhail
- title: The World Space Observatory - Ultraviolet (WSO-UV) Space Telescope; Status Update in 2013
- date: 2014-12-04
- words: 2556
- flesch: 58
- summary: GALEX has surveyed about 80% of the sky at UV wavelengths, providing for the first time a nearly complete view of the UV Universe (Mar- tin et al. 2003, Bianchi et al. 2011). WSO- UV has been thought as an observatory-type mission henceforth carrying instrumentation for UV imaging and spectroscopy (Shustov et al. 2009, 2011).
- keywords: 2010; ana; ap&ss; astronomy; castro; et al; expected; figure; galex; gómez; ground; high; hst; imaging; instrument; instrumentation; international; issis; mission; observatory; operations; programs; project; range; resolution; science; scientific; segment; slitless; space; spectroscopy; system; telescope; time; ultraviolet; world; wso; years
- versions: original; plain text
- app01-2425
- author: Beilicke, M.; Cowsik, R.; Dowkontt, P.; Guo, Q.; Kislat, F.; Barthelmy, S.; Okajima, T.; Mitchell, J. W.; Schnittman, J.; Zeiger, B.; De Geronimo, G.; Baring, M. G.; Bodaghee, A.; Miyazawa, T.; Finkelstein, K. D.; Krawczynski, H.
- title: Design and Tests of the Hard X-ray Polarimeter X-Calibur
- date: 2014-12-05
- words: 2895
- flesch: 57
- summary: The hard X-ray polarimeter X-Calibur discussed in this paper has the potential to cover the energy range above 10 keV. In turn, we completed the full assembly and studied the X-Calibur respsonse to incoming X-ray beams.
- keywords: azimuthal; balloon; beam; black; calibur; compton; czt; data; design; detector; emission; energy; field; figure; flight; fraction; gamma; hard; hard x; high; infocus; integral; kev; low; measurements; middle; missions; observations; observed; perpendicular; photons; pixel; plane; polarimeter; polarization; polarized; ray; rays; right; scattering; scintillator; shield; source; space; systematic; telescope; university
- versions: original; plain text
- app01-2427
- author: Blay, Pere; Sabau-Graziati, Lola; Reglero, Víctor; Connell, Paul H.; Rodrigo, Juana M.; Macián, Juan M. Macian; Biosca, José T.; Eyles, Chris
- title: Atmosphere-Space Interactions Monitor (ASIM): State of the Art
- date: 2014-12-05
- words: 2098
- flesch: 56
- summary: Several astrophysical high energy missions, other than BATSE, have detected TGFs: RHESSI (designed to observe high energy emissions from the Sun), FERMI and AGILE (both dedicated to the observations of Gamma-Ray Bursts in the universe). At a global scale, there are approximately 40 lightning flashes per sec- ond, as estimated from data taken by the Optical Tran- sient Detector (OTD, Christian et al. 1996) and Light- ning Imaging Sensor (LIS, Christian et al. 1999), and they are related to changes in the chemistry of the NOx molecules in the atmosphere (very determinant for the Ozone generation) and are thought of being of great in- terest for climate change studies (see for example Reeve and Toumi 2006, and Price and Rind 2012).
- keywords: 2013; asim; atmosphere; cameras; capabilities; columbus; energy; figure; high; imaging; instruments; kev; lightning; luminous; mev; mission; mmia; monitor; mxgs; phenomena; physics; ray; related; resolution; schematic; second; severe; space; tgfs; thunderstorms; time; tles; view
- versions: original; plain text
- app01-2428
- author: Sánchez-Portal, M.; Castillo-Fraile, M.; Almeida, C. Ramos; Esquej, P.; Alonso-Herrero, A.; Pérez García, A. M.; Acosta-Pulido, J.; Altieri, B.; Bongiovanni, A.; Castro Céron, J. M.; Cepa, J.; Coia, D.; Conversi, L.; Fritz, J.; Gonzalez-Serrano, J. I.; Hatziminaoglou, E.; Povic, M.; Rodrguez Espinosa, J. M.; Valtchanov, I.
- title: Recent Results from the SAFIR Project
- date: 2014-12-05
- words: 2949
- flesch: 57
- summary: The quality of the Her- schel data is allowing us to study the spatial distri- bution of dust within the galaxies, thus permitting to characterize the variation of dust properties (tempera- ture, dust mass) and SFR with the nuclear distance. Therefore, dust thermal emission should be made-up of three different contributions: (a) warm dust heated by the AGN (120-170 K); (b) cold dust heated by the star formation (40-70 K, and (c) very cold dust heated by the general interstellar radiation field (15-25 K).
- keywords: activity; agn; cold; components; data; dust; emission; fir; formation; galaxies; galaxy; herschel; high; host; kpc; maps; mass; mir; ngc; nuclear; pacs; project; properties; range; region; resolution; safir; sample; sed; seyfert; sfr; spain; spatial; spiral; spire; star; starburst; temperature; torus
- versions: original; plain text
- app01-2431
- author: Ambrosino, Filippo; Meddi, Franco; Nesci, Roberto; Rossi, Corinne; Sclavi, Silvia; Bruni, Ivan
- title: SiFAP: A New Fast Astronomical Photometer
- date: 2014-12-05
- words: 1698
- flesch: 56
- summary: 3 Conclusions We built a fast photometer able to collect data of pe- riodic signals with high time accuracy integrating in time windows down to 0.1 ms. The built-in electronics of each Hamamatsu mod- ule can generate three types of output: pulse count via USB interface already processed in time windows of 1 ms, analog and discriminated.
- keywords: ambrosino; analysis; astronomical; channel; crab; data; electronics; et al; fast; figure; instrument; meddi; new; ones; p3e0; period; photometer; pps; pulsar; pulse; sifap; signal; spin; target; telescope; time; windows
- versions: original; plain text
- app01-2433
- author: Hudec, René; Hudec, Lukáš
- title: US Astronomical Photographic Data Archives: Hidden Treasures and Importance for High-Energy Astrophysics
- date: 2014-12-05
- words: 2339
- flesch: 52
- summary: 316 Acta Polytechnica CTU Proceedings 1(1): 316–319, 2014 316 doi: 10.14311/APP.2014.01.0316 US Astronomical Photographic Data Archives: Hidden Treasures and Importance for High-Energy Astrophysics René Hudec1,2, Lukáš Hudec2 1Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-25165 Ondřejov, Czech Republic 2Czech Technical University in Prague, Faculty of Electrical Engineering, Prague, Czech Republic Corresponding author: rene.hudec@asu.cas.cz Abstract 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, with emphasis on application in high-energy astrophysics. The list of US plate collections provided by Dr. Wayne Osborn (Robbins and Osborn, 2009) was found to be incomplete.
- keywords: archives; astronomical; astronomy; astrophysics; available; baker; camera; cases; collections; czech; data; device; difficult; digitization; digitized; e.g.; energy; example; figure; high; hudec; images; important; inch; information; large; negatives; number; numerous; nunn; observatories; observatory; osborn; photographic; plate; plate archives; republic; scientific; study; transportable
- versions: original; plain text
- app01-2434
- author: Bisnovatyi-Kogan, Gennady S.
- title: Concluding Remarks
- date: 2014-12-05
- words: 1134
- flesch: 49
- summary: 1 2 Magnetic Field in Astrophysics *Core-collapse SN explosions *CR acceleration in SNR *Accretion disk structure and coronae formation *Jet formation and collimation *Magnetic accretion and cyclotron lines *Magnetars 2.1 X-ray sources Heating of accretion disk corona by magnetic recon- nection (S. Orlando). 2, 191-193 (Sep.- Oct. 1976) and A.A. Galeev, R. Rosner, G.S. Vaiana ”Structured coro- nae of accretion disks”.
- keywords: accretion; astrophysics; cmb; component; corona; cosmology; disk; energy; field; formation; gravitational; hard; heating; hot; jets; like; loops; magnetic; magnetoid; model; paper; ray; reconnection; sgrs; sources; talk
- versions: original; plain text
- app01-2435
- author: Auriemma, Giulio
- title: Final Remarks
- date: 2014-12-05
- words: 2336
- flesch: 59
- summary: [11], it has been speculated that dark energy could be the present manifestation of long lasting relics, with life- time much larger then the Hubble time, produced in the Planck era (tU . arXiv:1105.3470, [10] B. Harmes, Gravitational waves and dark energy, in: theese proceedings, 2013.
- keywords: arxiv; cmbr; collaboration; dark; data; detector; doi:10.1103; energy; events; fit; higgs; hubble; interactions; interesting; lhc; light; mass; matter; model; neutrinos; new; paradigm; particles; physics; planck; proceedings; results; strong; talk; telescope; time; total; universe; value; weak; wmap
- versions: original; plain text
- app01-2437
- author: Colafrancesco, Sergio
- title: Personal Conclusions
- date: 2014-12-05
- words: 1822
- flesch: 47
- summary: 2.2 Observational: big data science It is now becoming clear that the answers to big ques- tions in astrophysics and cosmology requires to address the challenge of dealing with big data quantities, anal- ysis and transport. 2.1 Theoretical challenges: fundamental questions Big theoretical challenges regard two important aspects of the structure and evolution of our universe: the cos- mic origins and the cosmic extremes.
- keywords: astronomical; astrophysics; big; challenges; cmb; cosmic; cosmology; dark; data; decade; discussion; energy; facilities; future; high; large; meeting; multifrequency; nature; objects; observational; personal; physics; questions; science; scientific; single; ska; space; stars; study; theoretical; universe
- versions: original; plain text
- app01-2439
- author: Giovannelli, Franco
- title: Concluding Address
- date: 2014-12-05
- words: 1266
- flesch: 53
- summary: Quasars have been detected at z = 6.419, 6.43 (Fan et al., 2003), and z = 7.085 (Mortlock et al., 2011), and GRBs up to z = 9.4 (Cucchiara et al., 2011). Type–Ia supernovae (SNe Ia) have been detected up to z ≈ 1.7; the future JWST will be able to detect SN Ia in the range 1.7< z < 3 (Aldering et al., 2007).
- keywords: astroparticle; astrophysics; concluding; cosmic; energy; epoch; experiments; future; ground; high; large; loeb; multifrequency; number; physics; problems; quasars; results; sources; space; tev; universe; workshop
- versions: original; plain text
- app01-2440
- author: Foreword, Editorial,
- title: The Tenth International Workshop on MULTIFREQUENCY BEHAVIOUR OF HIGH ENERGY COSMIC SOURCES Palermo, Italy, 2013
- date: 2014-12-05
- words: 1732
- flesch: 0
- summary: The Editors Franco Giovannelli & Lola Sabau-Graziati iv List of participants Amati Lorenzo , INAF–IASF, Bologna, Italy amati@iasfbo.inaf.it Ambrosino Filippo , La Sapeinza University, Roma, Italy filippo.ambrosino@roma1.infn.it Anderson Gemma , University of Southampton, UK gemma.anderson@hotmail.com Arnaud Monique , CEA Service d’Astrophysique, Gif sur Yvette, Saclay, France monique.arnaud@cea.fr Aschenbach Bernd , PRV Vaterstetten, Germany bernd.aschenbach@t-online.de Auriemma Giulio , Universit degli Studi della Basilicata, Italy Giulio.Auriemma@cern.ch Barret Didier , IRAP, Toulouse, France didier.barret@irap.omp.eu Barrière Nicolas , Space Sciences Lab - UC Berkeley, CA, USA barriere@ssl.berkeley.edu Beall James H. , SSD-NRL, Washington DC, USA beall@sjca.edu Behar Ehud , Technion. Haifa, Israel behar@physics.technion.ac.il Beilicke Matthias , Washington University in St.Louis, LA, USA beilicke@physics.wustl.edu Bisnovatyi-Kogan Gennady , Space Research Institute, IKI, Moscow, Russia gkogan@iki.rssi.ru v Blay Pere , GACE–LPI–Universidad de Valencia, Spain pere.blay@uv.es Boller Thomas , MPE, Garching, Germany bol@mpe.mpg.de Bordas Pol , IAAT & ISDC, Tübingen, Germany pol.bordas@uni-tuebingen.de Buckley David , Southern African Large Telescope, Cape Town, South Africa dibnob@saao.ac.za Castellina Antonella , INAF–OATo and INFN, Torino, Italy castelli@to.infn.it Castro Cerón José Maŕıa , Villanueva de la Cañada, Madrid, Spain josemari@alumni.nd.edu Colafrancesco Sergio , School of Physics - Wits University, Johannesburg, South Africa sergio.colafrancesco@wits.ac.za Costamante Luigi , Dipartimento di Fisica, Università di Perugia, Italy luigic2011@gmail.com
- keywords: africa; astrofisica; astronomical; astronomy; behaviour; canarias; cañada; center; cosmic; czech; dipartimento; dpt; energy; franco; germany; giovannelli; graziati; high; high energy; hotel; iaps; inaf; infn; institute; istituto; italy; japan; laguna; lola; madrid; multifrequency; new; nrl; organizing; palermo; physics; planetologia; republic; results; roma; sabau; science; sources; south; space; spain; spaziali; tenth; thanks; tübingen; university; usa; villanueva; workshop
- versions: original; plain text
- app01-2815
- author: Giovannelli, F.; Sabau-Graziati, L.
- title: The Golden Age of Cataclysmic Variables and Related Objects (Old and News)
- date: 2015-02-23
- words: 14359
- flesch: 62
- summary: Therefore the investigation on the magnetic field in- tensities in WDs is crucial in understanding the evolu- tion of CVs systems. Consequently, the investigation on the magnetic field intensities in WDs appears crucial in understanding the evolution of CVs systems, by which it is possible to gen- erate classical novae (e.g., Isern et al., 1997) and type-Ia supernovae (e.g., Isern et al., 1993).
- keywords: a&a; accreting; accretion; age; apj; astrophysics; behaviour; binary; bode; boundary; braking; cambridge; cataclysmic; classes; classical; classification; conf; cordova; cvs; cyg; data; different; disc; distribution; dous; dwarf; e.g.; eds; emission; energy; et al; euv; evolution; field; fundamental; gap; gaudenzi; general; giovannelli; golden; gravitational; graziati; hard; high; important; intermediate; iue; knigge; layer; like; log; long; low; magnetic; martino; mason; mass; material; matter; mauche; mcvs; mnras; models; moment; multifrequency; nature; news; novae; objects; observations; observed; old; optical; orbital; order; outburst; parameters; patterson; pcvs; period; physical; polars; porb; possible; press; problem; progenitors; properties; pspin; radiation; radius; range; rate; ray; rays; recurrent; references; related; review; sabau; scale; secondary; short; smak; sne; soft; sources; space; stars; sub; surface; systems; time; total; transfer; type; variables; verbunt; warner; way; wds; white; woudt; wynn; years
- versions: original; plain text
- app01-2818
- author: Ritter, H.; Kolb, U.
- title: The Ritter-Kolb Catalogue and its Impact on Research into CVs, LMXBs and related Objects
- date: 2015-02-23
- words: 3566
- flesch: 55
- summary: As the absence of a clear period gap in the pe- riod distribution of AM Her systems suggests, the strong magnetic field of the WD interferes with the loss of mass and angular momentum via a stel- lar wind from the companion star with the result that magnetic braking in magnetic CVs is signifi- cantly weaker than in non-magnetic CVs. Regarding Pmin for magnetic CVs, Boris Gaensicke, Retha Pretorius and I have all looked at this a bit and have not seen the expected difference to non-magnetic CVs.
- keywords: applications; available; binaries; cataclysmic; catalogue; common; cvs; data; detached; distribution; dwarf; edition; envelope; evolution; form; future; gap; kolb; lmxbs; low; magnetic; mass; non; number; objects; orbital; period; possible; rate; ray; related; research; ritter; rkcat; systems; time; years
- versions: original; plain text
- app01-2820
- author: Pretorius, M. L.
- title: The Space Density of Magnetic and Non-magnetic Cataclysmic Variables, and Implications for CV Evolution
- date: 2015-02-23
- words: 3905
- flesch: 53
- summary: Fig. 1 shows some reported mea- surements (differing by several orders of magnitude for non-magnetic CVs). Furthermore, mCVs are luminous X-ray sources, while the correlation between the ratio of optical to X-ray flux and the optical lumi- nosity of non-magnetic CVs, implies that an X-ray flux limit does not introduce as strong a bias against short- period CVs as an optical flux limit (e.g. van Teeseling et al. 1996).
- keywords: cvs; densities; density; e.g.; evolution; evolutionary; flux; fraction; galactic; gap; intrinsic; ips; knigge; kolb; long; magnetic; magnetic cvs; mcvs; mnras; non; observed; patterson; pc−3; period; polars; population; pretorius; ray; samples; short; sources; space; systems; undetected; wds
- versions: original; plain text
- app01-2822
- author: Sion, E. M.; Godon, P.
- title: White Dwarfs in Cataclysmic Variables: An Update
- date: 2015-02-23
- words: 3697
- flesch: 70
- summary: Scl NL 3.99 45000 Hamilton & Sion (2008) EM Cyg DN/ZC 6.98 40000 Godon et al. (2012) TT Crt DN 7.30 29000 Sion et al. (2008) RU Peg DN 8.99 70000 Godon et al. (2012) V442 Cen DN 11.04 47000 Sion et al. (2008) 37 E. M. Sion, P. Godon Figure 2: Effective White Dwarf Temperature as a function of the orbital period. [23] Miller-Jones, J. C. A., et al.: 2013, Science, 340, 950 [24] Nelan, E., & Bond, H.E.: 2013, ApJL, 773, L26 [25] Nelson, T. et al. 2012,: Apj, submitted, [astro-Ph arXiv:1211.3112]
- keywords: accretion; apj; araujob; betancor; betancor et; cygni; data; disk; distance; dwarf; e(b; envelope; et al; fuv; gänsicke; godon; godon et; hst; mass; model; nova; period; reddening; sion; sion et; southworth; spectra; stis; surface; szkody; szkody et; teff; temperatures; townsley; value; variables; white
- versions: original; plain text
- app01-2825
- author: Zharikov, S.; Tovmassian, G.
- title: CVs Around the Minimum Orbital Period
- date: 2015-02-23
- words: 2588
- flesch: 67
- summary: [4] Cannizzo, J. K., & Wheeler, J. C. 1984, ApJS, 55, 367 [5] Frank, J., et al. 2002, Accretion Power in Astrophysics, Cambridge University Press doi:10.1017/CBO9781139164245 [6] Hachisu, I. et al. 2004, APJL, 606, L139 doi:10.1086/421295 [7] Howell, S. B., et al. 2003, A&A, 399, 219 [8] Howell, S. B., et al. 2004, ApJL, 602, L49 doi:10.1086/382481 [9] Howell, S. B., et al. 2008, ApJ, 685, 418 doi:10.1086/590491 [10] Kolb, U., & Baraffe, I. 1999, MNRAS, 309, 1034 [11] Kuulkers, E., et al. 2011, A&A, 528, A152 [12] Lin, D. & Papaloizou, J., 1979, MNRAS, 186, 799 doi:10.1093/mnras/186.4.799 [13] Osaki, Y. 1995, PASJ, 47, 47 [14] Mason, E., et al. 2000, MNRAS, 318, 440 [15] Paczynski, B. 1981, Acta Astron., 31, 1 [16] Patterson, J., et al 1998, PASP, 110, 403 [17] Patterson, J., et al. 2002, PASP, 114, 721 [18] Robinson, E. L., et al. 1978, ApJ, 219, 168 [19] Sirotkin, F. & Kim, W. 2010, ApJ, 721, 1356 doi:10.1088/0004-637X/721/2/1356 [20] Skidmore, W., et al. 2000, MNRAS, 318, 429 [21] Smak, J. 1993, Acta Astronomica, 43, 101 [22] Steeghs, D., et al. 2007, ApJ, 667, 442 doi:10.1086/520702 [23] Steele, P. R., et al. 2013, MNRAS, 429, 3492 doi:10.1093/mnras/sts620 [24] Zharikov, S., et al. 2013, A&A, 549, A77 DISCUSSION RAIMONDO BAPTISTA: We also explore conditions and structure of accretion disks in such systems.
- keywords: accretion; bounce; candidates; cataclysmic; curve; cvs; disk; double; dwarf; et al; figure; light; low; mass; minimum; model; orbital; outburst; period; quiescence; ratio; sge; spiral; structure; super; systems; temperature; transfer; type; zharikov
- versions: original; plain text
- app01-2826
- author: Kononov, D. A.; Bisikalo, D. V.; Puzin, V. B.; Zhilkin, A. G.
- title: Transient Processes in a Binary System with a White Dwarf
- date: 2015-02-23
- words: 2679
- flesch: 64
- summary: In Section 3, based on the results of gas dynamic simulations we consider a physical model of the formation of the humps in orbital light curves of WZ Sge stars. This precessional density wave, first described by Bisikalo et al. (2004), occurs due to the retrograde precession (apsidal mo- tion) of elliptic flow lines, caused by the tidal action of the secondary.
- keywords: binary; curves; density; density wave; disk; frame; gas; humps; light; model; number; orbital; outer; period; precessional; regions; sge; shock; shock wave; simulations; stars; system; tidal; velocity; wave
- versions: original; plain text
- app01-2828
- author: Mason, P. A.; Robinson, E. L.; Gomez, S.; Segura, J. V.
- title: Optical Photometry of LMXBs: UW CrB (=MS 1603+260) and V1408 Aql (=4U 1957+115)
- date: 2015-02-23
- words: 2642
- flesch: 72
- summary: By including the newly observed type I bursts with published bursts in our analysis, we find that optical bursts are not observed between orbital phases 0.93 and 0.07, i.e. they are not observable during partial eclipses of the disk. Optical bursts are observed (e.g. Hynes, Robin- son, and Jeffery, 2004) because regions in the accretion disk absorb X-rays and are heated.
- keywords: aql; black; bursts; compact; crb; disk; eclipses; ephemeris; et al; figure; hakala; hole; intensity; low; mason; mass; new; night; optical; orbital; period; phase; photometry; ray; star; v1408
- versions: original; plain text
- app01-2829
- author: Szkody, P.
- title: Cataclysmic Variables from SDSS: A Review and A Look Forward to LSST
- date: 2015-02-23
- words: 3317
- flesch: 63
- summary: Arras et al. (2006) at- tribute this to the existence of a He instability strip as well as hydrogen. Schmidt et al.
- keywords: accreting; apj; cataclysmic; color; current; cvs; data; database; dwarfs; et al; followup; future; gänsicke; iii; known; large; legacy; long; lsst; magnitude; new; objects; period; polars; population; results; schmidt; sdss; segue; sky; sources; spectra; spectroscopic; stars; stripe; survey; systems; szkody; telescope; time; types; university; variables; white; years
- versions: original; plain text
- app01-2831
- author: Bisikalo, D. V.; Zhilkin, A. G.
- title: On the Influence of Magnetic Field on Accretion Processes in CVs
- date: 2015-02-23
- words: 3790
- flesch: 58
- summary: Taking into account that the gas in the stream moves with supersonic velocity we can consider its behavior using the ballistic approach and omitting the effects of pressure and magnetic field [9, 10]. Figure 1: 3D flow structure for the model 1 with Ba = 10 5 G. Iso-surface of density (lgρ = −4.5 in units of ρ(L1)) and magnetic field lines are shown. 1 Introduction Two main classes of CVs where magnetic field signif- icantly influences accretion processes are the interme- diate polars and polars
- keywords: accretion; accretion rate; accretor; cvs; decreases; disk; dwarf; field; flow; influence; intermediate; intermediate polars; magnetic; magnetic field; mass; material; mhd; model; point; polars; processes; propeller; rate; regime; rotation; spin; stream; structure; surface; system; transfer; value; velocity; white
- versions: original; plain text
- app01-2833
- author: Reinsch, K.
- title: Multifrequency Behaviour of Polars
- date: 2015-02-23
- words: 2994
- flesch: 55
- summary: They interprete two bright satellites of the central low-velocity compo- nent in the Hα Doppler map of BL Hyi as prominence- like magnetic loops kept in place by magnetic field in- teractions between the white dwarf and the donor star. [20] Schwarz, R., Reinsch, K., Beuermann, K., Burwitz, V., 2005, A&A 442,271 [21] Schwope, A., Staude, A., Vogel, J., Schwarz, R., 2004, AN, 325, 197 [22] Thomas, H.-C., Beuermann, K., Reinsch, K., Schwope, A.D., Burwitz, V., 2012, A&A 546, A104 [23] Warner, B., 1995, Cataclysmic Variable Stars, Cambridge University Press DISCUSSION DAVID BUCKLEY: Would you care to comment on the fact that a certain fraction of polars have no directly (observed) determined magnetic fields (e.g. from either detection of cyclotron features or spectropolarimetry) and have been suggested to be low-field systems.
- keywords: a&a; accretion; activity; apj; beuermann; binary; components; coupling; different; distribution; dwarf; e.g.; emission; energy; et al; far; field; harrison; high; klaus; long; low; magnetic; mass; observations; optical; polars; rate; ray; region; reinsch; schwarz; secondaries; secondary; soft; spectral; spectroscopy; spectrum; star; state; stellar; stream; structure; systems; type; variations; white; white dwarf
- versions: original; plain text
- app01-2835
- author: Mason, P. A.; Zhilkin, A. G.; Bisikalo, D. V.; Gomez, S.; Morales, J.; Robinson, E. L.
- title: Photometry and Multipolar Magnetic Field Modeling of Polars: BY Camelopardalis and FL Ceti
- date: 2015-02-23
- words: 2410
- flesch: 64
- summary: In an attempt to understand the observed complex changes in accretion flow geometry observed in BY Cam, we performed full 3D MHD simulations assuming a variety of white dwarf magnetic field structures. We describe progress towards understanding the structure of accretion flows in mCVs, obtained through the use of full 3D MHD simulations assuming a variety of magnetic field structures.
- keywords: accretion; band; beat; cam; ceti; curves; dipole; dwarf; eclipse; et al; field; figure; flow; high; light; low; magnetic; mason; mhd; model; modeling; observed; phase; photometry; polars; quadrupole; regions; state; structure; white
- versions: original; plain text
- app01-2836
- author: Traulsen, I.; Reinsch, K.; Schwope, A. D.
- title: Probing the Accretion Processes in Soft X-Ray Selected Polars
- date: 2015-02-23
- words: 2904
- flesch: 58
- summary: As described above, X-ray data are not the sole, but the main source of information on the accretion mechanisms in magnetic CVs. At times of high soft X-ray flux, the optical and soft X-ray data show pronounced short-term variability (“flickering”).
- keywords: a&a; accretion; black; cae; column; components; curves; cyclotron; data; different; dwarf; emission; energy; et al; figure; flux; hard; high; kev; light; models; multi; newton; observations; optical; parameters; polars; processes; ray; rays; soft; spectral; state; system; temperature; traulsen; tri; wavelength; white; xmm
- versions: original; plain text
- app01-2838
- author: Šimon, V.; Henden, A.
- title: Activity of the Polar AM Her (RX J1816.2+4952): A Short Review
- date: 2015-02-23
- words: 2756
- flesch: 65
- summary: Also the changes of the accretion region(s) and/or accretion modes are necessary to explain the re- lation between the optical and X-ray emission in the high states. The properties of the statistical distri- bution of brightness of the high states strongly evolve with time (Fig. 1cd).
- keywords: a&a; accretion; activity; bremsstrahlung; brightness; changes; cycle; dominant; donor; emission; episode; fig; hard; high; high state; intensities; long; low; modes; modulation; optical; orbital; pole; primary; ray; rays; region; short; state; term; time; transitions
- versions: original; plain text
- app01-2841
- author: Meintjes, P. J.; Odendaal, A.; van Heerden, H.
- title: AE Aquarii: A Short Review
- date: 2015-02-23
- words: 2916
- flesch: 60
- summary: Reports of pulsed burst-like VHE and TeV gamma- ray emission in the 1990’s (Bowden et al. 1992; Mein- tjes et al. 1992;1994) sparked interest in AE Aquarii as a non-thermal source of high energy emission. The low accretion rate of the white dwarf in AE Aquarii (Ṁ∗ ∼ 1014 g s−1) compared to the mass transfer rate deduced from the UV emission line spectra (Ṁ2 ∼ 1017 g s−1) implies that the white dwarf in AE Aquarii is in a super-propeller (ejector) state (Bisikalo & Zhilkin 2012; Ikhsanov & Beskrovnaya 2012).
- keywords: accretion; ae aquarii; apj; aquarii; beskrovnaya; cataclysmic; dwarf; e.g.; emission; et al; field; high; horne; ikhsanov; magnetic; mass; meintjes; mnras; non; optical; order; p.j; patterson; period; propeller; rate; ray; secondary; spin; star; system; s−1; thermal; transfer; van; variables; venter; white
- versions: original; plain text
- app01-2842
- author: Latev, G.; Zamanov, R.; Boeva, S.; Stoyanov, K.
- title: Simultaneous UBVRI Observations of the AE Aquarii Blobs
- date: 2015-02-23
- words: 2203
- flesch: 64
- summary: On time-scales of about 10 minutes, the light curve of AE Aqr displays flares with an amplitude up to ≈ 1 mag (see Fig.1 and Fig.2). AE Aqr hosts a rapidly rotating white dwarf.
- keywords: 2012; ae aqr; aqr; august; band; blobs; cataclysmic; curve; emission; expansion; figure; fireball; flares; horne; light; line; mass; observations; optical; orbital; parameters; peak; pearson; period; simultaneous; spin; temperature; time; ubv
- versions: original; plain text
- app01-2844
- author: Odendaal, A.; Meintjes, P. J.; Charles, P. A.; Rajoelimanana, A. F.
- title: Supersoft X-Ray Source CAL 83: A Possible AE Aqr-like System
- date: 2015-02-23
- words: 3344
- flesch: 61
- summary: Therefore, for CAL 83, mass transfer that can sustain nuclear burning is per- haps only possible in the phase when the evolved donor is expanding, with significant angular momentum loss contributing substantially in keeping the Roche lobe in contact with the donor. The short spin period inferred for CAL 83 can be the result of spin-up by accretion disc torques during a long mass transfer history, placing this source on a similar evolutionary track as the cataclysmic variable AE Aqr.
- keywords: accretion; analysis; aqr; associated; cal; close; curve; disc; e.g.; emission; high; light; like; lines; lobe; long; mass; meintjes; mnras; observations; odendaal; optical; orbital; period; periodogram; possible; ray; references; salt; short; source; spectra; spin; supersoft; time; transfer; velocity; ∼67
- versions: original; plain text
- app01-2849
- author: Shaviv, G.; Idan, I.; Shaviv, N. J.
- title: Why a New Code for Novae Evolution and Mass Transfer in Binaries?
- date: 2015-02-23
- words: 6894
- flesch: 72
- summary: However, the behavior of the mass losing star and its response to mass loss are not uniform in time so that the assumption of constant mass loss (and accretion at a constant rate on the WD) is not justified. The thermal relaxation of the donor star in response to the mass loss of mass �m is given by ⌧KHR = GM 2d RLd ✓ �m Md ◆ (3) where Ld is the luminosity of the donor and Md its mass.
- keywords: /yr; = ⌘; @r/@m; accretion; accretion rate; accretion time; change; donor; donor star; equilibrium; m md; mass loss; mass �; radius; rate; rld �; scale; star; thermal; time; ✓ �; � m; � �
- versions: original; plain text
- app01-2850
- author: Scaringi, S.
- title: Broad-Band Variability in Accreting Compact Objects
- date: 2015-02-23
- words: 2784
- flesch: 58
- summary: As a result, X-ray binaries emit most of their radiation at X-ray wavelengths, as opposed to cataclysmic variables which emit mostly at optical/ultraviolet wavelengths. Additionally to displaying the rms-flux relation, Scaringi et al. 2012b have reported that the power spectral density (PSD) of MV Lyrae is also qualita- tively similar to those observed at X-ray wavelengths in XRBs.
- keywords: accretion; aperiodic; apj; band; binaries; broad; compact; cvs; disk; display; et al; flickering; frequency; gravitational; high; inner; lags; lyrae; mnras; model; observed; optical; outer; properties; ray; scaringi; similar; systems; thick; time; uttley; variability; wavelengths; xrbs
- versions: original; plain text
- app01-2853
- author: Baptista, R.
- title: Flickering in CVs and Accretion Disc Viscosity
- date: 2015-02-23
- words: 2528
- flesch: 53
- summary: Flickering maps show an asymmetric source at disc rim (BS-stream flickering) and an extended cen- tral source (disc flickering) several times larger in ra- dius than the WD at disc centre. Abstract I review observational constraints on accretion disc viscosity inferred from changes of disc structure with time and from disc flickering distributions.
- keywords: a&a; accretion; amplitude; baptista; bruch; component; cvs; dim; disc; flickering; large; local; low; mapping; mass; mhd; model; optical; parameter; power; radial; radius; rate; relative; results; source; stream; time; transfer; turbulent; viscosity; αss
- versions: original; plain text
- app01-2854
- author: Balman, S.
- title: Inner Disk Structure of Dwarf Novae in the Light of X-Ray Observations
- date: 2015-02-23
- words: 4927
- flesch: 62
- summary: On the other hand, some DN show increased level of X-ray emission (GW Lib & U Gem: The lags oc- cur such that the UV variations lead X-ray variations which shows that as the accreting material travels onto the WD, the variations are carried from the UV into the X-ray emitting region.
- keywords: accretion; analysis; apj; balman; band; component; curves; cyg; data; detected; disk; dne; dwarf; emission; erg; et al; figure; flow; inner; inner disk; kuulkers; law; light; lines; mauche; meyer; mnras; model; noise; novae; observations; optical; outburst; peak; power; quiescence; ray; rays; revnivtsev; spectra; structure; systems; s−1; thick; time; truncation; uma; variability; variations; wheatley; white
- versions: original; plain text
- app01-2857
- author: Katysheva, N.; Shugarov, S.; Borisov, N.; Gabdeev, M.; Golysheva, P.
- title: Photometric and Spectroscopic Investigation of the Dwarf Nova HS 0218+3229: A Short Review
- date: 2015-02-23
- words: 2313
- flesch: 67
- summary: Golysheva et al. (2012, 2013) noted a large UV- excess in quiescence in 2010. Golysheva et al. (2013) obtained two spectra of HS 0218+3229 on September 17/18, 2010 in the prime focus of the Russian 6-m telescope BTA of the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) at the spectroscopic mode of the SCORPIO multi-mode focal reducer (Afanasiev, Moi- seev, 2005) with the long slit and CCD-camera EEV CCD 42-40 (2048×2048 pixels) with the exposures of 300 sec.
- keywords: aavso; brightness; bvrcic; cataclysmic; data; days; dne; dwarf; ephemeris; et al; fig; figure; golysheva; lcs; mag; mass; minimum; nightly; object; observations; orbital; outburst; passbands; photometric; quiescence; secondary; september; spectroscopic; spectrum; time
- versions: original; plain text
- app01-2859
- author: Kotze, M. M.; Charles, P. A.
- title: Investigating Long-Term Behaviour of X-ray Binaries Using Archival Data
- date: 2015-02-23
- words: 2039
- flesch: 62
- summary: [7] Homer L., Charles P. A., Hakala P., Muhli P., Shih I.-C., Smale A. P., Ramsay G. : 2001, MNRAS, 322, 827 [8] Kotze, M. M., Charles, P. A. : 2012, MNRAS, 420, 1575 doi:10.1111/j.1365-2966.2011.20146.x [9] Lang F. L., et al. : 1981, ApJ, 246, L21 [10] Leahy D. A., Igna C. D. : 2010, ApJ, 713, 318 doi:10.1088/0004-637X/713/1/318 [11] Levine, A. M., Bradt, H., Cui, W., et al. : 1996, ApJL, 469, L33 doi:10.1086/310260 [12] Lomb, N. R. : 1976, ApSS, 39, 447 [13] Margon, B., Anderson, S. F., Aller, L. H., Downes, R. A., & Keyes, C. D. : 1984, ApJ, 281, 313 [14] Ogilvie, G. I., & Dubus, G. :2001, MNRAS, 320, 485 131 http://dx.doi.org/10.1086/324038 http://dx.doi.org/10.1046/j.1365-8711.2003.06761.x http://dx.doi.org/10.1086/157216 http://dx.doi.org/10.1086/183176 http://dx.doi.org/10.1038/290100a0 http://dx.doi.org/10.1111/j.1365-2966.2011.20146.x http://dx.doi.org/10.1088/0004-637X/713/1/318 http://dx.doi.org/10.1086/310260 M. M. Kotze, P. A. Charles [15] Priedhorsky W. C., Terrell J. : 1984, ApJ, 280, 661 [16] Scargle, J. D. : 1982, ApJ, 263, 835 But this is not unexpected, since the 5 day period associated with tidal disc precession in X1916-053 was not determined from X-ray flux variations, but rather from optical variability and changes in the structure of the X-ray dips, which our DPS analysis of RXTE ASM data is unable to detect. 132 http://dx.doi.org/10.1086/181086 http://dx.doi.org/10.1086/184811 http://dx.doi.org/10.1086/183737 Introduction Data Analysis RXTE/ASM archival data Time-dependent period analysis Results Radiation-induced disc warp/tilting Third body Precessing relativistic jets Tidally-induced disc precession Discussion Conclusions
- keywords: analysis; apj; archival; asm; behaviour; binaries; charles; data; disc; dps; figure; kotze; long; mass; mnras; period; periodic; precession; radiation; ray; results; rxte; term; time; warp; xrbs
- versions: original; plain text
- app01-2861
- author: Buckley, David A. H.
- title: Observing CVs and LMXBs with SALT: Updates and Recent Results
- date: 2015-02-23
- words: 3120
- flesch: 56
- summary: � Imaging and spectropolarimetry (linear, circular and all Stokes modes), time resolved modes plus low resolution (R ∼50) wide-field imaging spec- tropolarimetry. These new SALT observations are aimed to address this issue and resolve details of the mass transfer stream through high time resolution emission line spectroscopy.
- keywords: accretion; african; buckley; bvit; ccd; curves; cvs; data; dwarf; eclipse; emission; exposure; field; figure; high; imaging; j12270; large; light; lines; low; magnetic; mode; new; observations; optical; photometry; polars; qpos; ray; region; resolution; rss; saao; salt; salticam; slot; southern; spectra; spectrograph; spectroscopy; speed; studies; system; telescope; time; transfer; white; xss
- versions: original; plain text
- app01-2863
- author: Potter, S. B.
- title: High-Speed Photo-Polarimetry of Magnetic Cataclysmic Variables
- date: 2015-02-23
- words: 1469
- flesch: 53
- summary: Figure reproduced from Potter et al. (2012). Followup photo-polarimetric observations with the HIPPO (Potter et al. 2010) however clearly shows or- bitaly modulated photometry and circularly polariza- tion from ∼ 0 to ∼ 18 per cent, unambiguously identi- fying IGRJ14536-5522 as a polar (Fig.2, left and right upper panels respectively: from Potter et al. 2010).
- keywords: accretion; cataclysmic; et al; high; hippo; igrj14536; intermediate; lup; magnetic; observations; photo; photometry; polarimetry; polarization; potter; qpo; speed; spin; variables; vlt
- versions: original; plain text
- app01-2866
- author: Suleimanov, V. F.; Mauche, C. W.; Zhuchkov, R. Ya.; Werner, K.
- title: Model Atmosphere Spectrum Fit to the Soft X-Ray Outburst Spectrum of SS Cyg
- date: 2015-02-23
- words: 2704
- flesch: 61
- summary: 143 Acta Polytechnica CTU Proceedings 2(1): 143–147, 2015 143 doi: 10.14311/APP.2015.02.0143 Model Atmosphere Spectrum Fit to the Soft X-Ray Outburst Spectrum of SS Cyg V. F. Suleimanov1,2, C. W. Mauche3, R. Ya. Zhuchkov2, K. Werner1 1Institute for Astronomy and Astrophysics, Kepler Center for Astro and Particle Physics, Eberhard Karls University, Sand 1, 72076 Tübingen, Germany 2Kazan (Volga region) Federal University, Kremlevskaya str. 18, 42008 Kazan, Russia 3Lawrence Livermore National Laboratory, L-473, 7000 East Ave., Livermore, CA 94550, USA Corresponding author: suleimanov@astro.uni-tuebingen.de Abstract The X-ray spectrum of SS Cyg in outburst has a very soft component that can be interpreted as the fast-rotating optically thick boundary layer on the white dwarf surface.
- keywords: apj; atmospheres; best; chemical; composition; cyg; edd; effective; fig; fit; g =; gravity; letg; log; log g; model; observed; outburst; panel; radiation; ray; soft; spectra; spectrum; suleimanov; surface; teff; temperature
- versions: original; plain text
- app01-2869
- author: Smith, R. C.; Echevarrıa, J.; Hernandez, J. V.; Szkody, P.
- title: SS Cygni Revisited
- date: 2015-02-23
- words: 2050
- flesch: 62
- summary: The clearest result was for the 3rd night in outburst, where the two methods agreed on a period of 0.353 days. The best period on night 2 was close to the or- bital period, with minimum chi-squared giving 0.2715 d and Lomb-Scargle giving 0.2769 d.
- keywords: 2012; apo; bisikalo; cannizzo; cygni; data; different; dwarf; echelle; figure; long; magnetic; methods; mexican; mexico; night; observatory; orbital; outburst; period; photometry; power; spectra; superhump; telescope; variations; watson
- versions: original; plain text
- app01-2870
- author: Qian, S.-B.; Zhu, L.-Y.; Zhao, E.-G.; Fernández Lajús, E.; Zhang, J.; Shi, G.; Han, Z.-T.
- title: Evolution and Outbursts of Cataclysmic Variables
- date: 2015-02-23
- words: 2677
- flesch: 64
- summary: Both the existences of the accretion stream and the hot spot indicate a high mass accretion rate at high brightness state. Two eclipse profiles at high brightness states are plotted in Fig.
- keywords: accretion; aqr; brightness; cataclysmic; changes; cvs; dwarf; eclipse; evolution; fig; high; hot; light; low; mass; mass transfer; observatories; outbursts; period; polars; profiles; qian; s.-b; secondary; spot; state; stream; telescope; time; transfer; variable; white; yunnan
- versions: original; plain text
- app01-2873
- author: Cannizzo, J. K.
- title: Outburst Properties of V1504 Cyg and V344 Lyr
- date: 2015-02-23
- words: 2921
- flesch: 62
- summary: The panels show the light curve, disk mass, disk radius, and the exact and approximate calculations for νnSH. References [1] Cannizzo, J.K.: 1993a, in Accretion Disks in Compact Stellar Systems ed., J.C. Wheeler (Singapore: World Scientific), 6.
- keywords: accretion; apj; cannizzo; cyg; data; disk; dwarf; instability; kepler; light; long; lyr; mass; model; nos; onset; osaki; outbursts; outer; pdi; period; quiescence; radius; smak; sos; systems; theory; tidal; time; tti; uma; v1504; v344
- versions: original; plain text
- app01-2874
- author: Voloshina, I.; Metlov, V.
- title: Study of Photometric Variability of Selected SU UMa Dwarf Novae
- date: 2015-02-23
- words: 2116
- flesch: 66
- summary: The numer- ous observations obtained for J1915 (about 6000 images at all) permitted us to follow up superhumps evolution in detail beginning from the first night of our observa- tions, June 4. Superhumps were detected in light curves of all the dwarf novae.
- keywords: curves; dwarf; evolution; figure; j1915; j2051; june; light; nights; nova; object; observations; orbital; outburst; period; power; sge; stage; stars; superhumps; superoutbursts; uma; v844
- versions: original; plain text
- app01-2879
- author: Kotze, E. J.; Potter, S. B.
- title: New Insights from Inside-Out Doppler Tomography
- date: 2015-02-23
- words: 1993
- flesch: 56
- summary: Yes, there can be a loss of res- olution at low velocities. Doppler tomography, as introduced by Marsh & Horne (1988), is aimed at rendering the information locked-up in phased-resolved spectra of a CV into a two- dimensional map of the binary components in velocity space (Doppler tomogram).
- keywords: accretion; ballistic; cartesian; disc; doppler; edge; features; frame; inner; inside; line; mass; model; normal; outer; polar; primary; roche; secondary; space; stream; technique; tomogram; tomography; velocity
- versions: original; plain text
- app01-2881
- author: Uemura, M.; Kato, T.; Nogami, D.; Mennickent, R.
- title: Application of Total Variation Minimization to Doppler Tomography
- date: 2015-02-23
- words: 2269
- flesch: 73
- summary: DMITRY BISIKALO: Is it possible to use TVM in 3D Doppler tomography? MAKOTO UEMURA: TVM provides a method to solve ill-posed problems. 174 http://dx.doi.org/10.14311/APP.2015.02.0174 Application of Total Variation Minimization to Doppler Tomography The isotropic total variation ΦTVM,iso is defined as ΦTVM,iso(s) = ∑ i,j √ (si+1,j −si,j)2 + (si,j+1 −si,j)2.
- keywords: cases; data; doppler; dttvm; figure; map; maps; mem; method; minimization; model; residuals; results; sge; spectra; structures; s−1; tomography; total; variation; −1000; −2000
- versions: original; plain text
- app01-2883
- author: Carter, P. J.; Marsh, T. R.; Steeghs, D.; Breedt, E.; Copperwheat, C. M.; Gansicke, B. T.; Groot, P. J.; Nelemans, G.
- title: The Hidden Population of AM CVn Binaries in the Sloan Digital Sky Survey
- date: 2015-02-23
- words: 2926
- flesch: 64
- summary: This provided the first sufficiently complete and homo- geneous sample of AM CVn systems that a study of the population became possible. In the past 10 years, the known population of AM CVns has quadrupled, largely as a result of dedicated surveys using the Sloan Digital Sky Survey (SDSS; York et al. 37), and the Palomar Transient Factory [16, 17].
- keywords: apj; binaries; carter; colour; cvn; cvns; database; density; et al; helium; hidden; lines; low; min; mnras; new; observed; orbital; period; population; roelofs; roelofs et; sample; sbss; sdss; sloan; space; spectroscopic; survey; systems
- versions: original; plain text
- app01-2885
- author: Zhu, L. Y.; Qian, S. B.; Zhao, E.-G.; Fernández Lajús, E.; Han, Z.-T.
- title: Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
- date: 2015-02-23
- words: 2983
- flesch: 63
- summary: 3.2 NY Vir NY Vir (PG 1336-018) was discovered as a HW Vir bi- nary by Kilkenny et al., (1998) which is composed of 2.580 2.585 2.590 2.595 2.600 2.605 0.4 0.2 0.0 -0.2 -0.4 6.750 6.755 6.760 6.765 0.4 0.2 0.0 -0.2 -0.4 Figure 2: Eclipse profiles of NY Vir observed in November 2012 and April 2013 with the 2.15-m ”Jorge Sahade” telescope. Kilkenny et al., (2011) found the orbital period of the binary is decreasing at a rate of Ṗ = −11.2 × 10−13 d per orbit.
- keywords: binaries; binary; change; close; companions; cyclic; effect; et al; formation; giant; light; loss; mass; new; nsvs; orbital; period; planet; presence; qian; red; sdb; star; substellar; system; targets; telescope; time; type; vir; zhu
- versions: original; plain text
- app01-2886
- author: Schmidtobreick, L.; Tappert, C.
- title: SWSex Stars, Old Novae, and the Evolution of Cataclysmic Variables
- date: 2015-02-23
- words: 2627
- flesch: 62
- summary: On the other hand, some old novae in this period range which are expected to show high mass transfer rate instead show photometric and/or spectroscopic resemblance to low mass transfer systems like dwarf novae. Some potential evidence for hi- bernation has been presented in the form of old nova shells around CVs that have previously been known as low mass transfer systems, i.e. Z Cam (Shara et al., 2007) and AT Cnc (Shara et al., 2012).
- keywords: binary; cataclysmic; cvs; dwarf; et al; evolution; gänsicke; high; low; mass; mass transfer; mnras; novae; old; orbital; period; range; rate; schmidtobreick; sex; shara; stars; systems; tappert; transfer; white
- versions: original; plain text
- app01-2888
- author: De Bianchi, S.; Braga, V. F.; Gaudenzi, S.
- title: The Role of Magnetic Field for Quiescence-Outburst Models in CVs
- date: 2015-02-23
- words: 3399
- flesch: 54
- summary: For this process to occur, an intense magnetic field 106−108 G is required; primaries with such fields do exist in Interme- diate polars (IPs) and Polars that owe their properties to the very primary magnetic field (Patterson 1994). In TNR models, outbursts are the product of thermonuclear burning onto the WD surface (Mitro- fanov 1978; 1980).
- keywords: a&a; accretion; apj; bath; behaviour; bisikalo; cnc; cvs; dim; disk; dne; field; gaudenzi; instability; instability model; king; livio; magnetic; magnetic field; mechanism; mnras; model; nova; order; osaki; outburst; presence; present; quiescence; resonance; role; secondary; stochastic; surface; systems; thermonuclear; tnr; value; wynn; zhilkin
- versions: original; plain text
- app01-2893
- author: Kato, M.; Hachisu, I.
- title: Theory of Nova Outbursts and Type Ia Supernovae
- date: 2015-02-23
- words: 4542
- flesch: 65
- summary: Figure 2 shows light curves calculated for various WD masses. 2.3 WD masses estimated by light curve fittings Figures 3 and 4 also show light curves of the classi- cal
- keywords: apj; binary; channel; classical; curves; cyg; decline; different; emission; envelope; evolution; figure; flux; free; hachisu; helium; hydrogen; kato; light; light curves; mass; masses; maximum; model; novae; oph; optical; phase; primary; rate; ray; recurrent; scenario; sco; secondary; star; thick; time; type; wind
- versions: original; plain text
- app01-2895
- author: Nagashima, M.; Arai, A.; Kajikawa, T.; Kawakita, H.; Kitao, E.; Arasaki, T.; Taguchi, G.; Ikeda, Y.
- title: Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph
- date: 2015-02-23
- words: 2698
- flesch: 62
- summary: In these observations, the C2 and CN absorption bands had already disappeared and strong Balmer emission lines and Fe II lines were again prominent. Why was the appearance of both C2 and CN absorption bands so transient that they could be detected on Apr 8 only?
- keywords: aavso; absorption; apr; astronomical; bands; cambridge; days; detection; dust; emission; figure; formation; light; lines; molecular; molecules; nova; observations; observed; oph; optical; outflow; phase; smarts; society; spectra; spectroscopic; spectrum; v2676
- versions: original; plain text
- app01-2897
- author: Naito, H.
- title: The Slow Nova V1280 Sco: A Short Review
- date: 2015-02-23
- words: 2260
- flesch: 66
- summary: Especially we focus on multiple absorption lines detected in high-resolution spectra (see Sadakane et al. 2010, Naito et al. 2012, Naito et al. 2013 for details). V723 Cas entered the nebular phase about 18 months after maximum (Iijima 2006), while V1280 Sco took about 50 months (about three times longer than V723 Cas) to enter the nebular phase (Naito et al. 2012).
- keywords: absorption; cas; chesneau; das; distance; dust; et al; figure; high; light; lines; mass; maximum; metastable; multiple; naito; nebular; nova; observation; phase; resolution; results; sco; shell; slow; v1280; v723
- versions: original; plain text
- app01-2899
- author: Ness, J.-U.
- title: Early Super Soft Source Spectra in RS Oph
- date: 2015-02-23
- words: 3119
- flesch: 60
- summary: The line profiles contained clear signs of emission lines in the red wings (figure 5 of Ness et al. 2007) which could either come from residual shock emission or are part of P Cyg profiles. A similar result has been found by (Schönrich & Ness 2008) who show in their figure 1 the evolution of the volume emission measure for various emission lines as a function of their peak formation temperature assuming collisional equi- librium.
- keywords: brightness; chandra; changes; continuum; curve; day; early; edge; emission; et al; faint; fig; figure; grating; hardness; light; lines; ness; observation; oph; oxygen; panel; phase; ray; soft; spectra; spectrum; sss; time; variability; variations
- versions: original; plain text
- app01-2901
- author: Ederoclite, A.; Tappert, C.; Schmidtobreick, L.; Vogt, N.
- title: When a Nova Becomes Old
- date: 2015-02-23
- words: 2479
- flesch: 61
- summary: The classification is ei- ther from Ritter & Kolb (2003) or from Tappert et al. (2012,2013a). In some cases, time-series photometry is carried out (e.g. Tappert et al., 2013b) but, in general, we perform time-series spectroscopy with R = λ ∆λ ' 2500 in the Hα region.
- keywords: apj; classical; cvs; data; et al; explosion; gap; histogram; magnetic; magnitude; mnras; novae; number; objects; old; period; project; quiescence; results; series; spectroscopy; systems; tappert; targets; time; vogt
- versions: original; plain text
- app01-2902
- author: Tappert, C.; Ederoclite, A.; Schmidtobreick, L.; Vogt, N.
- title: Life After Eruption: Best of 2009–2013
- date: 2015-02-23
- words: 2888
- flesch: 68
- summary: Unfortunately the available spec- tra of V972 Oph by Zwitter & Munari (1996) and Ring- wald et al. (1996) that cover that range have too low S/N to confirm the presence of such lines in V972 Oph. We argue that such line could in principle be more frequent in CVs because it can be easily hidden in the wings of the usually strong Hα emis- sion that is exceptionally weak in V972 Oph.
- keywords: cir; component; data; ederoclite; emission; eruption; et al; fig; heii; high; lines; low; mag; mnras; nova; oph; peaked; post; presence; schmidtobreick; sco; secondary; spectrum; star; state; strong; systems; tappert; time; v728; v972
- versions: original; plain text
- app01-2905
- author: Poggiani, R.
- title: The Nova V5584 Sgr: A Short Review
- date: 2015-02-23
- words: 2133
- flesch: 66
- summary: The optical and infrared observations suggest that V5584 Sgr is a Fe II nova that formed dust. 1 Introduction Nova Sagittarii No. 4 was discovered by Nishiyama and Kabashima (2009) on 2009 October 26 and later desig- nated V5584 Sgr (Samus, 2009).
- keywords: classification; cyg; decline; dust; emission; et al; iauc; infrared; lines; maximum; nova; observations; october; optical; poggiani; proceedings; profiles; ray; rays; sgr; spectrum; telescope; v5584; williams
- versions: original; plain text
- app01-2906
- author: Kajikawa, T.; Nagashima, M.; Kawakita, H.; Arai, A.; Ikeda, Y.; Isogai, M.; Fujii, M.; Ayani, K.
- title: Spectroscopic Monitoring Observations of Nova V1724 Aql in 2012
- date: 2015-02-23
- words: 2275
- flesch: 62
- summary: We observed no evidence of molecule formation in V1724 Aql in contrast with V2676 Oph in which dust formation occurred after the molecular formation in the nova outflow. 1 Introduction Nova Aql 2012 (later named as V1724 Aql) was discovered on 2012 October 20.4 UT (Nishiyama & Kabashima 2012).
- keywords: aql; astronomical; brightness; continuum; curves; cygni; emission; evolution; figure; formation; fujii; later; light; line; maximum; nova; object; observations; observatory; slow; spectra; spectroscopic; v1724; velocity
- versions: original; plain text
- app01-2908
- author: Kajikawa, T.; Arai, A.; Nagashima, M.; Kawakita, H.; Yamanaka, M.; Kawabata, K.; Kiyota, S.
- title: Line Evolution of the Nova V5587 Sgr from Early to Nebula Phase
- date: 2015-02-23
- words: 2101
- flesch: 76
- summary: The light curves of the novae have been revealed in detail, and they can be classified into several classes (Strope et al. 2010). However, the light curves in the “Jitter”and “Oscillation”classes (Strope et al. 2010) could not be reproduced well by the models.
- keywords: abundance; early; figure; helium; iijima; july; light; nebula; nova; observations; observatory; phase; sgr; similar; spectra; spectroscopic; v5587; vul
- versions: original; plain text
- app01-2911
- author: Mukai, K.
- title: Recurrent Novae — A Review
- date: 2015-02-23
- words: 4935
- flesch: 63
- summary: This is in stark con- trast to the studies of X-ray bursts, which are TNRs on accreting neutron stars. Yet, even in the case of X-ray bursts, puzzles remain (Galloway et al. 2008).
- keywords: a&a; accretion; angular; apj; binary; bursts; case; cne; common; cvs; cyg; donor; dwarf; ejecta; ejection; emission; envelope; eruptions; et al; giant; high; irradiation; known; long; loss; magnetic; mass; multi; novae; observations; observed; oph; optical; orbital; order; period; phase; pyx; radio; range; rate; ray; rays; recent; recurrent; results; review; rne; stars; surface; symbiotic; systems; temperature; time; transfer; type; wavelength; white; wind
- versions: original; plain text
- app01-2913
- author: González-Riestra, R.
- title: The Recurrent Eclipsing Nova U Sco: A Short Review
- date: 2015-02-23
- words: 2520
- flesch: 65
- summary: ApJ 745, 43 doi:10.1088/0004-637X/745/1/43 [12] Orio, M., Behar, E., Gallagher, J. et al.: 2013, MNRAS 429, 1342 doi:10.1093/mnras/sts421 [13] Takei, D., Drake, J., Tsujimoto, M. et al.: 2013, ApJ 769, L4 doi:10.1088/2041-8205/769/1/L4 [14] Schaefer, B.: 1990, ApJ 355, L39 [15] Schaefer, B.: 2005, ApJ, 621, L53 doi:10.1086/429145 255 http://dx.doi.org/10.1088/2041-8205/720/2/L195 http://dx.doi.org/10.1111/j.1365-2966.2011.19803.x http://dx.doi.org/10.1088/0004-637X/745/1/43 http://dx.doi.org/10.1093/mnras/sts421 http://dx.doi.org/10.1088/2041-8205/769/1/L4 http://dx.doi.org/10.1086/429145 R. González-Riestra [16] Schaefer, B.: 2010, ApJS 197, 275 doi:10.1088/0067-0049/187/2/275 [17] Schaefer, B., Pagnotta, A., Osborne, J. et al.: 2010, ATEL 2477 The appearance of the supersoft emission roughly coincided with the first extended optical plateau, while the X-ray turn-off started at the time of the second optical decline (Schaefer et al. 2010).
- keywords: apj; curve; data; day; days; disk; eclipse; emission; et al; evolution; high; light; lines; observations; optical; outburst; ray; recurrent; schaefer; sco; spectra; spectrum; system; time; xmm
- versions: original; plain text
- app01-2915
- author: Arai, A.; Isogai, M.; Yamanaka, M.; Akitaya, H.; Uemura, M.
- title: Optical Low Resolution Spectroscopic Observations of T Pyx during the Early Phase of 2011 Outburst
- date: 2015-02-23
- words: 2769
- flesch: 65
- summary: The sixth outburst of T Pyx was discovered at vi- sual magnitude 13.0 on UT 2011 April 14.2931 (= JD 2455665.7931, t = 0 d) by M. Linnolt (Waagan et al. 2011). The study in the early spec- troscopic observations and photometry revealed that T Pyx showed rare hybrid spectral classification types (Williams 1992), He/N - Fe II - He/N transition (e.g. Izzo et al. 2012, Imamura and Tanabe 2012, Surina et al. 2014).
- keywords: 2012; astronomical; early; emission; et al; features; figure; initial; kao; like; lines; novae; observations; observatory; observed; phase; pyx; rayet; spectral; spectroscopic; t pyx; type; university; wolf
- versions: original; plain text
- app01-2917
- author: Tanabe, K.
- title: Properties of Recurrent Nova T Pyxidis Based on 2011 Outburst
- date: 2015-02-23
- words: 1784
- flesch: 58
- summary: 2 Summary of Low-resolution Optical Spectroscopy 2.1 Basic properties of T Pyxidis based on pre-2011 outburst As it is mentioned above, T Pyx is a quite unique RN for its very short orbital period (1.83 hour) compared with other RNe. 263 http://dx.doi.org/10.1088/0067-0049/187/2/275 http://dx.doi.org/10.1111/j.1365-2966.2010.17046.x http://dx.doi.org/10.1088/2041-8205/770/2/L33 http://dx.doi.org/10.1017/CBO9780511586491 Introduction Summary of Low-resolution Optical Spectroscopy Basic properties of T Pyxidis based on pre-2011 outburst Spectral classification of novae Spectral evolution of T Pyxidis in its early stage of 2011 outburst Discussion Missing outburst? Is IM Normae a real member of T Pyx subclass? Conclusions
- keywords: curve; data; evolution; japan; light; member; normae; novae; observations; observers; outburst; phase; photometric; previous; properties; pyx; pyxidis; recurrent; results; schaefer; spectral; spectroscopic; stage; subclass; tanabe; vsolj
- versions: original; plain text
- app01-2918
- author: Izzo, L.; della Valle, M.; Ederoclite, A.; Henze, M.
- title: On the 2011 Outburst of the Recurrent Nova T Pyxidis
- date: 2015-02-23
- words: 2775
- flesch: 67
- summary: We also present some discussions about the binary system configurations and the X-ray emission, showing that the white dwarf mass should be larger than 0.8 M�. Keywords: spectroscopy - X-rays - individual: T Pyx. The distance of T Pyx was determined from light echoes to be 4.8 ± 0.5 kpc
- keywords: apj; binary; ejecta; emission; et al; light; line; mass; nebular; nova; observations; observed; optical; outburst; phase; profiles; pyx; ray; recurrent; results; secondary; sss; system; t pyx; value; work
- versions: original; plain text
- app01-2920
- author: Zemko, P.; Orio, M.
- title: X-Ray Observations of VY Scl-Type Nova-Like Binaries in the High and Low State
- date: 2015-02-23
- words: 2805
- flesch: 66
- summary: In one case, BZ Cam, the X-ray luminosity increases in the low state, and in the others, the decrease in X-ray flux in the low state is smaller than that in the optical and UV. DISCUSSION DMITRY BISIKALO: Could you estimate the im- pact of bow shock to observed X-ray flux? POLINA ZEMKO:
- keywords: aql; ari; burning; cam; data; flux; greiner; high; high state; intermediate; kev; low; low state; lyr; mag; model; nebula; observations; optical; ray; scl; spectra; stars; state; swift; type; v794
- versions: original; plain text
- app01-2923
- author: Hachisu, I.; Kato, M.
- title: The UBV Color Evolution of Classical and Symbiotic Novae
- date: 2015-02-23
- words: 2010
- flesch: 70
- summary: These different trends of nova color evolutions may represent different sides of the true color evolution which we do not yet fully understand observationally or theoretically. The aim of this presentation is to find a general path of nova color evolutions as Duerbeck & Seitter (1979) tried to find about thirty years ago.
- keywords: b−v; color; cyg; diagram; e(b; emission; evolution; fast; figure; free; general; giant; hachisu; kato; light; maximum; novae; observed; optical; sequence; ser; supergiant; vul
- versions: original; plain text
- app01-2924
- author: Skopal, A.; Sekeráš, M.; Tomov, N. A.; Tomova, M. T.; Tarasova, T. N.; Wolf, M.
- title: What Powers the 2006 Outburst of the Symbiotic Star BF Cygni?
- date: 2015-02-23
- words: 2873
- flesch: 63
- summary: During the quiescent phase, the luminosity of the hot component was esti- mated to ∼ 10 000 L� for d = 3.8 kpc (e.g. Mikola- jewska et al., 1989). (1992), Skopal et al. (1997).
- keywords: accretion; active; component; continuum; cyg; disk; e.g.; emission; et al; giant; high; hot; low; luminosity; mass; nebular; observations; optical; outburst; parameters; phase; presence; pseudophotosphere; radiation; resolution; sed; skopal; skopal et; spectrum; star; symbiotic; s−1; type
- versions: original; plain text
- app01-2927
- author: Sekeráš, M.; Skopal, A.
- title: Diagnostic of the Symbiotic Stars Environment by Thomson, Raman and Rayleigh Scattering Processes
- date: 2015-02-23
- words: 2465
- flesch: 57
- summary: Moreover, the evolution of Raman lines during quiescent and ac- tive phases can reveal the ionization structure around the hot star (e.g. Skopal et. al., 2006, Fig. 4 here). Fig. 1 shows a sketch of simplified ionization structure of symbiotic stars with location of scattering processes in their environment.
- keywords: a&a; active; e.g.; emission; environment; giant; hot; hydrogen; line; nebula; neutral; optical; orbital; ovi; phase; processes; radiation; raman; rayleigh; scattered; scattering; schmid; skopal; star; structure; symbiotic; thomson; white; wind
- versions: original; plain text
- app01-2928
- author: Stoyanov, K.; Zamanov, R.
- title: Rotation of the Mass Donors in High-mass X-ray Binaries and Symbiotic Stars
- date: 2015-02-23
- words: 3021
- flesch: 64
- summary: Accretion of matter is different for both types of X-ray binaries. We compare the rotation of mass donors in symbiotics with the projected rotational velocities of field giants and find that the M giants in S-type symbiotics rotate on average 1.5 times faster than the field M giants.
- keywords: 560; binaries; close; donors; giant; high; lifetime; mass; mass x; mwc; orbital; prot; pseudosynchronization; ray; ray binaries; red; rotation; stars; supergiant; symbiotic; synchronization; systems; s−1; tidal; time; type; zamanov; τcirc
- versions: original; plain text
- app01-2930
- author: Martino, B. L.; Federici, M.
- title: Non Relational Models for the Management of Large Amount of Astronomical Data
- date: 2015-02-23
- words: 2521
- flesch: 45
- summary: Almost any application focused on the analysis of astronomical data may read data in FITS format (Wells et al., 1981) FITS format allows to add to a collection of data a set of additional information used to allow their better characterization. The specific context is focused to problems quite different from those related to administrative and managerial environments within which were developed the leading technologies on which are based the modern systems of massive storage of data.
- keywords: access; architecture; astronomical; available; behavior; cassandra; catalog; consistency; data; database; dbms; figure; gsc; hadoop; hbase; high; information; language; large; logical; management; model; mongodb; mysql; non; nosql; operations; order; o’reilly; queries; query; related; relational; set; speed; state; storage; system; test; time; transaction; use
- versions: original; plain text
- app01-2932
- author: Hudec, R.; Šimon, V.
- title: Study of Cataclysmic Variables with the Satellites LOFT and Gaia
- date: 2015-02-23
- words: 4022
- flesch: 57
- summary: 297 Acta Polytechnica CTU Proceedings 2(1): 297–302, 2015 297 doi: 10.14311/APP.2015.02.0297 Study of Cataclysmic Variables with the Satellites LOFT and Gaia R. Hudec1,2, V. Šimon 1,2 1Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-25165 Ondřejov, Czech Republic 2Czech Technical University in Prague, Faculty of Electrical Engineering, Prague, Czech Republic Corresponding author: rene.hudec@asu.cas.cz Abstract The goal of this paper is to discuss the capabilities of ESA satellite missions Gaia (already in space) and LOFT (considered for the ESA M4 slot) for investigation of cataclysmic variables (CVs). LOFT Observa- tory Science is expected to provide important observa- tions for virtually all classes of relatively bright sources, including: X-ray bursters, High-mass X-ray binaries, X- ray transients (all classes), CVs, magnetars, gamma-ray bursts (GRBs), Nearby galaxies (SMC, LMC, M31...), AGN etc.
- keywords: activity; approximated; brightness; cataclysmic; color; cvs; data; different; distribution; dwarf; e.g.; emission; esa; et al; figure; gaia; gaia data; high; hudec; important; indices; large; light; loft; long; low; novae; objects; observations; orbital; outbursts; properties; ray; sampled; sampling; satellite; science; sources; spectra; states; statistical; study; systems; šimon; term; time; types; variables; variations; years
- versions: original; plain text
- app01-2934
- author: Hudec, R.; Šimon, V.
- title: GLORIA and Study of Cataclysmic Variables
- date: 2015-02-23
- words: 3505
- flesch: 50
- summary: GLORIA project will define free standards, proto- cols and methodology for the following purposes: con- trolling Robotic Telescopes and all related instrumenta- tion (i.e. cameras, filter-wheels, domes...); giving Web access to the Network: access to an arbitrary number of robotic telescopes via a web portal; conducting On- line experiments (it will be possible to design specific web environments for controlling telescopes for research on a specific scientific issue; conducting Off-line experi- ments (it will be possible to design specific web environ- ments for analyzing astronomical meta-data produced by GLORIA or other databases). 3.3 Prospects of CV investigation by GLORIA Below we give some examples of CV types suitable for investigation within GLORIA project.
- keywords: access; activity; astronomers; astronomical; astronomy; cataclysmic; community; consortium; cvs; czech; data; dwarf; e.g.; experiments; free; gloria; hudec; large; long; network; novae; object; observations; observing; optical; orbital; outbursts; professional; project; ray; republic; research; robotic; scientific; sge; sky; small; šimon; telescopes; time; university; van; variables; warner; web; world
- versions: original; plain text
- app01-2936
- author: Bisikalo, D. V.
- title: Concluding Remarks
- date: 2015-02-23
- words: 936
- flesch: 57
- summary: Franco Giovannelli & Lola Sabau-Graziati and their team are the main engine of the conference and I hope that they will continue this hard job, the organization of CVs conferences. I would like to stress the very good organization of the conference program, which, in particular, appeared as a balanced number of reviews and contributed talks.
- keywords: concluding; conference; cvs; data; hans; important; like; papers; problems; proceedings; remarks; ritter; scientific; talks; time
- versions: original; plain text
- app01-2940
- author: Giovannelli, F.
- title: The Golden Age of Cataclysmic Variables and Related Objects - II Concluding Address
- date: 2015-02-23
- words: 1715
- flesch: 46
- summary: Consequently, the investigation on the magnetic field intensities in WDs appears crucial in understanding the evolution of CVs systems, by which it is possible to gen- erate classical novae (e.g., Isern et al., 1997) and type-Ia supernovae (e.g., Isern et al., 1993). Figure 1 shows a part of Lipunov’s diagram where polars (PCVs), intermediate polars (IPCVs) and non–magnetic CVs (NMCVs) are situated.
- keywords: accretion; age; astrophysics; bisikalo; cataclysmic; concluding; cvs; evolution; giovannelli; golden; gravimagnetic; importance; isern; italy; like; lipunov; magnetic; mass; new; objects; optical; physical; polars; problems; ray; related; rotators; stars; systems; variables; way; white; workshop
- versions: original; plain text
- app01-3071
- author: Riabova, Kseniia; Collini, Luca; Garziera, Rinaldo
- title: NUMERICAL METHOD FOR ESTIMATION OF TENSILE LOAD IN TIE-RODS
- date: 2016-02-11
- words: 3188
- flesch: 55
- summary: The work introduces a two-phase method for determination of axial loads in tie-rods. [6] introduced a method that enables definition of axial loads in slender beams with unknown boundary conditions, taking into account affects of rotational inertia of the beam and masses of sensors.
- keywords: analysis; ancient; assumed; axial; axial load; beam; bed; boundary; conditions; cross; elastic; error; estimation; experimental; fem; fig; force; frequencies; frequency; function; higher; identification; journal; length; load; masonry; method; model; natural; numerical; optimization; parameters; problem; rods; section; set; sound; stiffness; structural; technique; tensile; tie; unknown; value; vibration; weight
- versions: original; plain text
- app01-3076
- author: Petráňová, Veronika; Valach, Jaroslav; Viani, Alberto; Estébanez, Marta Peréz
- title: DETERMINATION OF THERMAL RESPONSE OF CARRARA AND SNEZNIKOVSKY MARBLE USED AS A BUILDING MATERIALS
- date: 2016-02-11
- words: 2033
- flesch: 54
- summary: As in the Carrara specimen, both perpendicular planes of Sneznikovsky marble contain grains with no shape preferred orientation. Orientation of cuboid specimens, A-a and B-a is Sneznikovsky marble and C-1 and C-4 is Carrara marble.
- keywords: 10−6k−1; anisotropic; c-1; c-4; calcite; carrara; coefficient; crystals; cycle; expansion; extension; fabric; figure; grains; investigated; length; marble; orientation; physical; relative; response; results; shape; sneznikovsky; specimen; stone; temperature; texture; thermal; value; weathering
- versions: original; plain text
- app01-3079
- author: Šamec, Elizabeta; Damjanovic, Domagoj; Krolo, Joško
- title: LOAD BEARING CAPACITY OF THE GLASS RAILING ELEMENT
- date: 2016-02-11
- words: 3398
- flesch: 59
- summary: Taking into account the behaviour of laminated glass and results of experimental and numerical testing, glass railing element can be regarded as safe. Considering the behaviour of laminated glass during the test and results of experimental testing compared to numerical ones, glass railing element can be re- garded as safe.
- keywords: analysis; bearing; behaviour; breakdown; bridge; capacity; construction; design; displacement; elasticity; element; experimental; failure; fig; figure; force; fpok; glass; influence; interlayer; laminated; load; load bearing; material; model; modulus; numerical; points; pvb; qpok; results; sample; strain; test; testing; value; wind; wind load; zagreb
- versions: original; plain text
- app01-3233
- author: Karimi, Navid Zarif; Heidary, Hossein; Kianfar, Parnian; Hasani, Mahmud; Minak, Giangiacomo
- title: THE EFFECT OF SUPPORT PLATE ON DRILLING-INDUCED DELAMINATION
- date: 2016-02-11
- words: 3530
- flesch: 67
- summary: From Figure 5, a significant difference in adjusted delamination factor for supported drilling and unsupported drilling can be observed so that in all drilling tests, the average value of delamination is reduced when applying a back-up plate. Workpiece damping and its effect on delamination damage in drilling thin composite laminates.
- keywords: analysis; area; composite; crack; critical; delamination; drilling; effect; energy; experimental; factor; feed; fiber; figure; force; glass; induced; journal; karimi; level; ln b; materials; parameters; plate; process; rate; reduction; specimen; speed; support; thrust; unsupported; zarif
- versions: original; plain text
- app01-3392
- author: Balyo, Tomáš; Barták, Roman; Trunda, Otakar
- title: REINFORCED ENCODING FOR PLANNING AS SAT
- date: 2015-12-31
- words: 5848
- flesch: 70
- summary: Pφ is a sequence of action sets such that its t-th set contains those actions ai ∈ O for which φ(ati) = True. 4.1. Solving planning problems via translation to satisfiability (SAT) is one of the most successful approaches to automated planning.
- keywords: actions; assignment; binary; clauses; compatible; dom(x; domains; d→e; eff(a; effects; encoding; following; formula; goal; initial; makespan; new; number; parallel; planning; plans; pre(a; prevailing; problems; r2∃-step; reinforced; sas+; sase; sat; satisfiability; semantics; set; solved; state; step; task; time; total; transition; type; value; variables
- versions: original; plain text
- app01-3394
- author: Cížek, Petr; Faigl, Jan
- title: ON FPGA BASED ACCELERATION OF IMAGE PROCESSING IN MOBILE ROBOTICS
- date: 2015-12-31
- words: 5331
- flesch: 52
- summary: Acta Polytechnica CTU Proceedings doi:10.14311/APP.2015.1.0008 Acta Polytechnica CTU Proceedings 2:8–14, 2015 © Czech Technical University in Prague, 2015 available online at http://ojs.cvut.cz/ojs/index.php/app ON FPGA BASED ACCELERATION OF IMAGE PROCESSING IN MOBILE ROBOTICS Petr Čížek∗, Jan Faigl Department of Computer Science, Faculty of Electrical Engineering, CTU in Prague, Technická 2, 166 27 Prague, Czech Republic ∗ corresponding author: petr.cizek@fel.cvut.cz Abstract. FAST feature detection.
- keywords: algorithm; approach; architecture; available; board; brief; camera; chip; computational; computer; consumption; core; cpu; data; dedicated; demanding; descriptor; design; detection; detector; doi:10.1109; efficient; environment; evaluation; extraction; fast; fast feature; feature; figure; fpga; image; image processing; implementation; limited; low; main; matching; method; micro; mobile; module; navigation; odometry; paper; parallel; particular; performance; pixels; platforms; points; power; proceedings; processing; processor; resolution; resources; results; robot; robotic; robust; salient; second; soc; suitable; surf; system; task; time; vision; visual; visual navigation
- versions: original; plain text
- app01-3396
- author: Jelinek, Ales
- title: VECTOR MAPS IN MOBILE ROBOTICS
- date: 2015-12-31
- words: 5323
- flesch: 65
- summary: 2a, new maps are much more usable for navigation as well as environment documentation. Keywords: robotics, SLAM, vector map, point cloud, edge extraction.
- keywords: algorithms; approximation; area; better; certain; cloud; cluster; corresponding; criterion; current; data; edges; end; environment; error; estimation; example; extraction; feature; fig; fitting; good; information; laser; line; localization; lot; main; map; mapping; maps; matching; method; mobile; new; noise; number; objects; outliers; paper; path; point; pose; possible; previous; problem; proceedings; process; processing; real; registration; results; robot; robotics; scan; scanner; segments; sensors; set; similarity; slam; system; vector; working; world
- versions: original; plain text
- app01-3398
- author: Koutný, Michal; Pilát, Ondrej; Černý, Patrik; Kasinec, Maroš; Barták, Roman
- title: X-COPTER STUDIO
- date: 2015-12-31
- words: 3044
- flesch: 56
- summary: Sensor data are filtered with extended Kalman filter (EKF) where we engage physical model based on a similar project [17]. We chose Urbi SDK because of its portability (Linux and Windows systems are supported) and the own 1Google Chrome is strongly recommended, though Mozilla Firefox will also get by (without visualization of video data).
- keywords: acta; api; application; ar.drone; c++; checkpoint; client; communication; component; connection; control; ctu; data; dataflow; extended; figure; graph; implementation; inertial; interface; localization; node; onboard; parrot; path; platform; polytechnica; position; possible; proceedings; project; quadrocopter; robot; robotics; run; runtime; scripting; sdk; sensors; server; software; studio; system; urbi; urbiscript; user; video; visual
- versions: original; plain text
- app01-3400
- author: Mrva, Jakub; Stejskal, Martin; Faigl, Jan
- title: ON TRAVERSABILITY COST EVALUATION FROM PROPRIOCEPTIVE SENSING FOR A CRAWLING ROBOT
- date: 2015-12-31
- words: 4504
- flesch: 56
- summary: Keywords: terrain traversability, proprioceptive sensing, walking robot. Focusing now mainly on legged robots, an early analysis of terrain traversability for legged locomotion using active perception was proposed by Krotkov back in 1990
- keywords: adaptive; approaches; assessment; autonomous; better; camera; classification; conference; consumption; cost; data; different; doi:10.1109; energy; estimation; evaluation; example; exteroceptive; field; gait; general; ground; hexapod; ieee; information; international; legged; measured; modalities; modality; motion; obstacles; path; perception; planning; proceedings; proprioceptive; results; robot; robotics; section; sensing; sensors; servo; shape; small; speed; terrain; torque; traversability; traversability cost; values; walking; work
- versions: original; plain text
- app01-3401
- author: Pire, Taihú; Fischer, Thomas; Faigl, Jan
- title: IMPACT ASSESSMENT OF IMAGE FEATURE EXTRACTORS ON THE PERFORMANCE OF SLAM SYSTEMS
- date: 2015-12-31
- words: 3272
- flesch: 61
- summary: Comparative assessment of point feature detectors in the context of robot navigation. In particular, the S-PTAM (Stereo Parallel Tracking and Mapping) method is considered as the visual SLAM framework for which both the feature detector and feature descriptor are parametrized.
- keywords: binary; brief; brisk; combination; computational; computer; descriptor; detector; doi:10.1109; error; evaluated; evaluation; extractors; fast; feature; figure; gftt; image; impact; localization; map; mapping; method; navigation; orb; particular; performance; points; pose; ptam; results; robot; robust; sift; slam; star; stereo; surf; system; time; tracking; vision; visual; vol; work
- versions: original; plain text
- app01-3405
- author: Štolba, Michal
- title: A CASE FOR DOMAIN-INDEPENDENT DETERMINISTIC MULTIAGENT
- date: 2015-12-31
- words: 5134
- flesch: 60
- summary: Multiagent planning problem is a quadruple Π = 〈L,A,s0,Sg〉, where L is a set of propositions, A is a set of agents α1, . . . In the planning community, extensions of the PDDL language intended to support multiagent planning were introduced as Multiagent Planning Language (MAPL) in [9] and as Multiagent PDDL (MA-PDDL) in [10], but none of the extensions gained wide popu- larity, probably because of their complexity.
- keywords: actions; agents; approach; brafman; case; classical; communication; complexity; computation; cooperative; crosby; data; definition; deterministic; different; dmap; domain; example; factorization; following; formalism; global; goal; heuristic; independent; information; internal; language; multiagent; multiagent planning; multiple; particular; pddl; planners; planning; possible; privacy; problem; proc; proceedings; propositions; public; question; research; set; single; specific; state; strips; systems; time; workshop
- versions: original; plain text
- app01-3407
- author: Váňa, Petr; Faigl, Jan
- title: ON SAMPLING BASED METHODS FOR THE DUBINS TRAVELING SALESMAN PROBLEM WITH NEIGHBORHOODS
- date: 2015-12-31
- words: 3978
- flesch: 64
- summary: 6. Results The performance of the proposed modification of the sampling based algorithm has been evaluated in a series of scenarios. The DTSPN is path planning problem where the Dubins vehicle has to visits each region Ri while sat- isfying the kinodynamic constraints of (1).
- keywords: algorithm; approaches; atsp; authors; computational; constraint; control; convex; decoupled; dtspn; dubins; etsp+lio; evolutionary; figure; generated; instances; methods; modification; neighborhoods; number; optimal; optimization; paper; particular; path; planning; problem; quality; radius; regions; required; results; salesman; samples; sampling; section; sequence; solution; time; vehicle; visits; waypoints
- versions: original; plain text
- app01-3419
- author: Hajdu, István; Károly, Dóra; Pelyhe, Liza
- title: FLEXIBILITY TEST OF THE TOOLS OF ANGIOPLASTY
- date: 2016-02-11
- words: 1769
- flesch: 56
- summary: Keywords: angioplasty, coronary stent, balloon catheter, flexibility. The most important requirements for stent materials are biocompatibil- ity and hemocompatibility.
- keywords: acta; angioplasty; balloon; beam; catheter; coronary; ctu; device; diameter; different; figure; flexibility; help; important; length; loaded; materials; mechanical; model; polytechnica; proceedings; stent; strut; systems; testing; tools; width
- versions: original; plain text
- app01-3422
- author: Lutovinov, Maxim; Papuga, Jan; Růžička, Milan
- title: DATABASE FINLIV – FOCUS ON STAIRCASE METHOD
- date: 2016-02-11
- words: 2102
- flesch: 60
- summary: After selected data are checked by the criteria, Fin- Liv provides the user the list of possible combinations of load levels and corresponding steps to choose from (Figure 3). Data input is realized by filling in the salmon colored cells and by choosing options from the combo boxes.
- keywords: amplitude; application; corresponding; ctu; data; database; experiments; failed; fatigue; figure; finliv; input; levels; limit; load; method; non; number; parameters; regression; specimens; staircase; staircase method; strain; stress
- versions: original; plain text
- app01-3424
- author: Neitzel, Birgit; Aschermayer, Florian; Kracalik, Milan; Hild, Sabine
- title: STRUCTURAL AND MECHANICAL CHARACTERIZATION OF DEFORMED POLYMER USING CONFOCAL RAMAN MICROSCOPY AND DSC
- date: 2016-02-11
- words: 2020
- flesch: 51
- summary: In the present study we compare the results for crystallinity measurements of deformed polymers using both methods in order to characterize the differences in micro-structure due to deformation. Keywords: Raman spectroscopy, DSC, deformed polymers, crystallinity.
- keywords: confocal; crystallinity; deformation; deformed; direction; distribution; dsc; figure; material; measurements; mechanical; microscopy; mod; orientation; peaks; perpendicular; pet; polymer; polypropylene; raman; results; samples; spectra; spectroscopy; structure; study
- versions: original; plain text
- app01-3425
- author: Chung, Chi Nghia; Major, Zoltan
- title: STATISTICAL EVALUATION OF FATIGUE DATA OF COMPONENTS
- date: 2016-02-11
- words: 2736
- flesch: 58
- summary: Keywords: fatigue models, statistical evaluation, reliability, techniques of parameter fitting, JMP. 2. Fatigue Models In general, Fatigue models are quantifications of phys- ical material properties.
- keywords: acta; analysis; basquin; case; components; ctu; custom; cycles; data; distribution; estimate; evaluation; fatigue; figure; fitting; function; jmp; loading; major; material; measured; method; model; parameters; polytechnica; possible; probability; proceedings; reliability; results; squares; statistical; sum; table; values; weibull; work; ∆σ0
- versions: original; plain text
- app01-3722
- author: Burian, Ondrej; Dostal, Vaclav; Vesely, Ladislav
- title: STUDY OF IDENTIFICATION OF TWO-PHASE FLOW PARAMETERS BY PRESSURE FLUCTUATION ANALYSIS
- date: 2016-12-16
- words: 783
- flesch: 45
- summary: This paper deals with an identification of a parameters of simple a pool boiling in a vertical rectangular channel by analysis of pressure fluctuation. A measured pressure data were statistically analysed and compared with goal to find dependencies between parameters of a two-phase flow and statistical properties of pressure fluctuation.
- keywords: boiling; differential; flow; fluctuation; fraction; identification; measured; method; parameters; phase; pressure; steam; void; volume
- versions: original; plain text
- app01-3723
- author: Caha, Vojtěch; Krejčí, Jakub
- title: POST CRITICAL HEAT TRANSFER AND FUEL CLADDING OXIDATION
- date: 2016-12-16
- words: 3102
- flesch: 54
- summary: It includes the wide range of heat transfer correlations for different one phase and two phase flow regimes. A list of chosen post CHF heat transfer correlations and their validity ranges are shown in Table 1.
- keywords: boiling; calculation; chf; cladding; coefficient; coolant; correlation; critical; different; dryout; equilibrium; experimental; figure; film; flow; flux; fuel; groeneveld; heat; heat transfer; heated; layer; liquid; model; nuclear; oxidation; oxide; pdo; post; pressure; profile; program; range; regime; region; results; surface; table; temperature; thermo; transfer; vapour; wall; water
- versions: original; plain text
- app01-3725
- author: Fejt, Filip
- title: THERMAL-HYDRAULIC ANALYSIS OF IRT-4M IN REACTIVITY INSERTION ACCIDENT AT VR-1 REACTOR
- date: 2016-12-16
- words: 2351
- flesch: 56
- summary: Coolant temperatures The temperatures of flow surfaces are shown in Fig. It can be clearly seen that both RELAP5 and TRACE have a very good agreement in coolant temperatures between outside fuel layers.
- keywords: accident; analysis; assembly; codes; coefficient; components; convection; coolant; core; fig; figure; flow; fuel; heat; hydraulic; increase; irt-4; laminar; layer; model; natural; nuclear; pipe; plenum; power; reactivity; reactor; relap5; research; system; temperature; thermal; trace; transfer; velocity; vessel; vr-1; water
- versions: original; plain text
- app01-3727
- author: Olšanský, Václav; Granja, Carlos; Krist, Pavel; Mařík, Radek; Bíla, Jiří; Chvátil, David
- title: PROTON RADIOGRAPHY WITH THE PIXEL DETECTOR TIMEPIX
- date: 2016-12-16
- words: 3550
- flesch: 60
- summary: The average number of protons events per frame was about 10 events per frame. Thus the principle of proton radiography is to determine the energy of each particle after passing through the ana- lyzed sample.
- keywords: accelerators; area; calculated; calculation; calibration; center; coordinates; ctu; czech; data; detector; doi; energy; estimation; event; figure; final; fitting; frame; gaussian; hough; image; imaging; impact; instruments; mean; methods; mode; nuclear; particles; physics; pixel; point; processing; proton; radiography; records; research; results; sample; section; suitable; technical; timepix; tot; transform; university; values
- versions: original; plain text
- app01-3731
- author: Stepanek, Jan; Blaha, Vaclav; Dostal, Vaclav
- title: QUENCH FRONT PROPAGATION IN THE ANNULAR CHANNEL
- date: 2016-12-16
- words: 2425
- flesch: 62
- summary: Quench front velocity on initial wall temperature. But many of these experiments were done for short geometries with limited range of initial wall temperatures [6].
- keywords: cooling; core; drop; experimental; fig; flow; heat; heated; initial; lower; nuclear; pressure; propagation; quench; quenching; range; rate; region; rewetting; section; steam; steel; surface; temperature; test; thermocouples; transfer; tube; velocity; wall; water
- versions: original; plain text
- app01-3732
- author: Lovecky, Martin; Jirickova, Jana; Skoda, Radek
- title: ASSESSMENT OF BURNABLE ABSORBER FUEL DESIGN BY UWB1 DEPLETION CODE
- date: 2016-12-16
- words: 5764
- flesch: 77
- summary: Keywords: burnable absorber, fuel depletion, Monte Carlo. Bateman equations are solved in special de- pletion scheme that relies on nuclide-based predictor- corrector method in both transport and burnup part of fuel depletion.
- keywords: absorbers; burnable; c e; candu; code; content; depletion; e n; e r; e u; earth; factor; fuel; l e; l u; multiplication; n d; n t; nuclear; oxides; p r; pwr; r b; r n; r t; rare; reactivity; sfr; t b; t e; uwb1
- versions: original; plain text
- app01-3734
- author: Rabochová, Michaela; Vinš, Miroslav; Šoltés, Jaroslav; Michalcová, Božena
- title: MEASUREMENT OF NEUTRON SPATIAL DISTRIBUTION OF THE BNCT EPITHERMAL BEAM AT THE REACTOR LVR-15
- date: 2016-12-16
- words: 2297
- flesch: 49
- summary: The measurement using neutron image plates showed that the neutron beam is symmetrical with the highest intensity in the centre of the beam. The main aim was to take a radiography image of thermal neutron beam and its evaluation using neutron imaging plate.
- keywords: 6li; acta; beam; bnct; brain; capture; centre; channel; converter; ctu; czech; data; detector; device; distribution; figure; flux; horizontal; image; intensity; lvr-15; measurement; method; neutron; neutron beam; peak; plate; polytechnica; positioning; positioning device; reactor; republic; research; spatial; special; therapy; values
- versions: original; plain text
- app01-3735
- author: Šturma, Jan; Štefánik, Milan
- title: ACTIVATION ANALYSIS OF HISTORICAL SAMPLES AND NEUTRON SPECTRUM DETERMINATION AT VR-1 TRAINING REACTOR
- date: 2016-12-16
- words: 2735
- flesch: 46
- summary: The pool-type light water training reactor VR-1 of the De- partment of Nuclear Reactors CTU is frequently used for purposes of neutron activation analysis especially due to its experimental equipment such as vertical and horizontal irradiation channels. Other technique of neutron activation analysis is the absolute method, where the amount of material in sample is defined as mSp = ASpM NAφσa , where M is the molar mass of examined material, NA is the Avogadro’s number, φ is the integral neutron flux and σa is the spectrum averaged microscopic activation cross-section. 1.2.
- keywords: 10−16; activation; analysis; analytical; coins; composition; cross; ctu; detectors; determination; determined; energy; figure; flux; gamma; historical; hours; irradiated; irradiation; materials; method; neutron; nuclear; observed; power; rates; reaction; reactor; region; samples; set; spectra; spectrum; table; thermal; time; training; vr-1
- versions: original; plain text
- app01-3736
- author: Darážová, Ľubica; Šagátová, Andrea; Nečas, Vladimír; Fülöp, Marko; Han, Bumsoo
- title: RADIATION DEGRADATION OF PCBS IN SEDIMENTS: COMPARISON OF TWO METHODS
- date: 2016-12-16
- words: 1538
- flesch: 53
- summary: PCB concentration in soil sample as a function of dose irradiated by EB-Tech vs. UCEA Trenčín. of water and water molecules are competitive com- pounds in the process of PCBs irradiation. Radiation degradation with electrons is new and perspective method to dechlorinate PCBs in sediment matrix.
- keywords: acta; beam; biphenyls; chemical; compounds; contaminated; ctu; dechlorination; degradation; dose; electron; fig; h2o; irradiation; kgy; method; methodology; organic; pcbs; polytechnica; pretreatment; proceedings; radicals; samples; sediments; slovakia; soil; strážske; university; water
- versions: original; plain text
- app01-3738
- author: Romsy, Tomas; Zacha, Pavel
- title: CFD SIMULATION OF UPWARD SUBCOOLED BOILING FLOW OF FREON R12
- date: 2016-12-16
- words: 3975
- flesch: 58
- summary: Subcooled flow boiling under forced convection occurs in many industrial applications to maximize heat removal from the heat source by the very high heat transfer coefficient. Subcooled flow boiling is expected to realize the high heat flux cooling for electronic devices [6, 7], or for high heat flux cooling in mi- crogravity [8].
- keywords: ansys; boiling; bubble; calculated; calculation; case; centre; cfd; comparison; computational; conditions; cooling; ctu; data; debora; diameter; experiments; facility; figure; flow; fluent; fluid; flux; fraction; freon; geometry; grid; heat; heated; high; liquid; measured; midstream; model; non; nri; numerical; phase; profile; r12; radial; results; rez; saturation; setting; simulation; subcooled; temperature; transfer; tube; values; vapour; velocity; void; wall; work
- versions: original; plain text
- app01-3740
- author: Cech, Miroslav; Sevecek, Martin
- title: MODELLING OF NUCLEAR FUEL CLADDING TUBES CORROSION
- date: 2016-12-16
- words: 3544
- flesch: 60
- summary: Nuclear fuel cladding alloys developed for usage in PWR reactors During the evolution of the nuclear fuel, fuel ven- dors and research organizations developed dozens of concepts of fuel cladding alloys.
- keywords: accident; acta; alloys; cladding; conditions; coolant; corrosion; ctu; data; development; e110; exp; figure; fuel; growth; heat; high; higher; layer; loca; model; neutron; niobium; nuclear; oxide; phase; place; polytechnica; power; ppm; proceedings; rate; reactors; rod; rods; temperature; thickness; transition; tubes; zirconium; zirlo
- versions: original; plain text
- app01-3741
- author: Vesely, Ladislav; Dostal, Vaclav; Entler, Slavomir
- title: COMPARISON OF S-CO2 POWER CYCLES FOR NUCLEAR ENERGY
- date: 2016-12-16
- words: 2937
- flesch: 68
- summary: Among the first researchers who studied benefits of CO2 power cycles belongs Angelino, Feher, Verhivker and Gokhstein [2]. Keywords: S-CO2, power cycle, fusion.
- keywords: brayton; co2; co2 cycle; compression; compression cycle; cycle; demo2; design; different; efficiency; energy; figure; flow; fusion; gfr; heat; high; inlet; layout; mass; net; nuclear; pinch; point; power; preheating; pressure; reactor; sources; table; temperature; turbine
- versions: original; plain text
- app01-3742
- author: Krejčí, Jakub; Kabátová, Jitka; Kočí, Jan; Weishauptová, Zuzana; Vrtílková, Věra
- title: HYDROGEN CHARGING OF FUEL CLADDING METHODOLOGY
- date: 2016-12-16
- words: 2505
- flesch: 54
- summary: Hydrogen content is a very important parameter for mechanical properties of fuel cladding, especially after LOCA transients. The required value of hydrogen content is possible to reach by a long-term pre-oxidation test or a much shorter hydrogen charging experiment.
- keywords: annealing; charging; cladding; conditions; content; czech; dissolution; evaluation; figure; fuel; gain; hydrides; hydrogen; hydrogen charging; influence; inner; layer; loca; mass; methodology; mpa; pressure; proceedings; process; radial; sample; temperature; time; ujp; uniform; vacuum; value
- versions: original; plain text
- app01-3743
- author: Matlocha, Tomas
- title: ION SOURCE FOR A SINGLE PARTICLE ACCELERATOR
- date: 2016-12-16
- words: 4286
- flesch: 64
- summary: Keywords: single particle accelerator, cyclotron ion source, low beam current, laser ion source, pulsed ion source, U-120M, proton radiography. EBIS/EBIT ion source A principle of operation of an Electron Beam Ion Source (EBIS) and an Electron Beam Ion Trap (EBIT) is very similar.
- keywords: accelerator; anode; approx; beam; bunch; cathode; chamber; charge; cm2; current; cyclotron; discharge; ebit; electron; emission; energy; extraction; field; fig; figure; formation; gas; high; hydrogen; ion; ion source; ions; laser; low; minimal; negative; number; operation; particle; photo; physics; pig; plasma; positive; proceedings; process; production; proton; puller; pulse; radiography; reason; regime; second; single; source; surface; system; temperature; type; u-120; volume; window
- versions: original; plain text
- app01-3745
- author: Osuský, Filip; Vrban, Branislav; Ballo, Peter; Čerba, Štefan; Lüley, Jakub; Farkas, Gabriel
- title: NUMERICAL MULTIGROUP TRANSIENT ANALYSIS OF SLAB NUCLEAR REACTOR WITH THERMAL FEEDBACK
- date: 2016-12-16
- words: 3131
- flesch: 56
- summary: It is necessary to carefully investigate transient states of fast neutron reactors, due to recriticality issues after accident scenarios. [9] E. Lychagin, V. Mityukhlyaev, A. Muzychka, et al. UCN sources at external beams of thermal neutrons.
- keywords: 2hk; boundary; calculation; case; code; condition; crank; cross; dependent; diffusion; distribution; energy; equation; evolution; feedback; figure; flux; fuel; generation; group; g′=1; initial; material; method; neutron; nicholson; nuclear; numerical; power; reactor; section; slab; solution; source; state; stationary; subcritical; system; table; temperature; thermal; time; transient
- versions: original; plain text
- app01-3746
- author: Kecek, Adam
- title: IMPACT OF THE CHEMICAL FORM OF IN-CONTAINMENT SOURCE ON FISSION PRODUCT RELEASE FROM WWER-1000/V-320 TYPE NPP CONTAINMENT DURING LOCA
- date: 2016-12-16
- words: 2249
- flesch: 58
- summary: iodine is one of the main options of iodine mass release into the environment. In addition, whole fission product mass released into the primary circuit is transferred into the containment.
- keywords: accidents; acta; aerosol; behaviour; building; c00; c03; calculations; ch3i; chemical; cocosys; containment; core; csi; description; distribution; environment; fission; form; fraction; impact; iodine; mass; npp; nuclear; power; product; reactor; release; results; source; sump; tab; time; type; v-320
- versions: original; plain text
- app01-3747
- author: Johnová, Kamila
- title: SELF-ABSORPTION CORRECTIONS BASED ON MONTE CARLO SIMULATIONS
- date: 2016-12-16
- words: 3610
- flesch: 58
- summary: For the needs of this paper only seven energies were chosen in order to demonstrate the behaviour of correction factor as a function of density and composition. Correction factor for M600 as a function of density.
- keywords: absorption; attenuation; based; calculated; carlo; composition; correction; cross; curve; data; density; detector; different; efficiency; energies; energy; factor; figure; function; gamma; geometry; kev; laboratory; m280; m600; material; measured; measurement; method; model; monte; number; paper; photon; radionuclide; real; samples; section; self; simulated; simulations; spectrometry; volume
- versions: original; plain text
- app01-3749
- author: Sevecek, Martin; Valach, Mojmir
- title: EVALUATION METRICS APPLIED TO ACCIDENT TOLERANT FUEL CLADDING CONCEPTS FOR VVER REACTORS
- date: 2016-12-16
- words: 5305
- flesch: 43
- summary: The main cur- rent metric for fuel system performance is that the cladding should maintain post-quench ductility by lim- iting the peak cladding temperature to 1204 ◦C and the maximum oxidation level to 17 % of the cladding wall thickness. Keywords: nuclear fuel, accident tolerant fuel, evaluation metrics, LWR, VVER.
- keywords: accident; acta; additional; alloy; atf; attributes; baseline; behavior; burst; chemistry; cladding; common; compatibility; concepts; conditions; constraints; coolant; corrosion; ctu; current; cycle; czech; definition; design; development; different; enhanced; evaluation; failure; figure; fission; fuel; generation; heat; high; higher; hydrogen; illustrative; impact; important; interactions; internal; low; lwrs; material; mechanical; melting; metrics; new; normal; nuclear; operating; operation; oxidation; performance; polytechnica; potential; power; pressure; proceedings; properties; rate; reactor; retention; safety; scenarios; severe; specific; steam; system; temperature; tests; thermal; time; tolerant; uo2; vver
- versions: original; plain text
- app01-3829
- author: Brandejský, Tomáš
- title: PROBLEMS OF EN 50 128:2011 RAILWAY STANDARD
- date: 2016-09-15
- words: 2021
- flesch: 46
- summary: [3] applying standard IEC 61508 Func- tional safety of electrical/electronic/programmable electronic safety-related systems into the specific area of railway systems. Growing complexity of railway systems, especially of such systems as ERTMS, tends to requirement of such SIL.
- keywords: acta; application; assessment; cenelec; chapter; control; ctu; cycle; czech; design; development; different; electronic; en50128; functions; generic; level; polytechnica; problems; proceedings; programmable; railway; related; requirements; safety; sil; software; standard; systems; term; version
- versions: original; plain text
- app01-3830
- author: Drábek, Michal; Janoš, Vít; Michl, Zdeněk
- title: ON OPERATION OF 740 M LONG FREIGHT TRAINS ON CZECH TEN-T RAILWAY NETWORK
- date: 2016-09-15
- words: 3726
- flesch: 62
- summary: Pres- ence or absence of long overtaking tracks is commented for each line group. Because of busy traffic, the actual number of long overtaking tracks is not sufficient at all.
- keywords: available; brno; budějovice; busy; capacity; crossing; czech; departure; desirable; direction; double; european; fast; figure; freight; infrastructure; labem; length; line; long; mainlines; nad; network; operation; overtaking; parliament; particular; passenger; paths; plzeň; praha; presence; railway; regulation; run; sections; single; speed; station; stop; sždc; timetable; track; traffic; trains; transport; české
- versions: original; plain text
- app01-3832
- author: Drábek, Michal
- title: ON EFFICIENT OPERATIONAL CONCEPT OF FUTURE HIGH-SPEED RAILWAY IN THE CZECH REPUBLIC
- date: 2016-09-15
- words: 6047
- flesch: 65
- summary: This aim can be achieved by two means: as little number of PuT lines as reasonable, and as little number of trainsets per PuT line as reasonable. In Figure 2, such PuT lines are marked in blue colour.
- keywords: approach; author; brno; cities; city; concept; conventional; ctu; czech; detailed; economic; economy; efficient; european; fast; future; half; high; hour; hsl; hsls; interval; ipt; jihlava; labem; largest; lines; long; min; nad; network; new; number; operational; ostrava; paper; pardubice; passengers; periodic; possible; potential; praha; railway; rapid; republic; ridership; rolling; segment; services; speed; stock; stop; studies; study; symmetry; system; thanks; time; timetable; trains; transport; travel; ústí
- versions: original; plain text
- app01-3835
- author: Guziur, Petr
- title: DESIGN PARAMETERS OF BUFFER STOPS
- date: 2016-09-15
- words: 2796
- flesch: 66
- summary: Also discusses parameters of buffer stops that enter its design, such as collision speed and kinetic energy absorbing capacity. In Czech Republic it is allowed to use three types of buffer stops (according to national regulation ČD Ž9
- keywords: absorbing; additional; arresting; brakes; braking; buffer; capacity; collision; dead; design; devices; distance; ekin; end; energy; figure; flank; force; friction; higher; hydraulic; kinetic; km.h−1; path; protection; safety; speed; stock; stop; table; track; train; type
- versions: original; plain text
- app01-3836
- author: Janoš, Vít; Kríž, Milan
- title: INFRASTRUCTURE PARAMETERS AFFECTING CAPACITY OF RAILWAYS IN TEN-T
- date: 2016-09-15
- words: 2259
- flesch: 63
- summary: Lost capacity is unusable time space between train paths with different train speeds, where any additional train path cannot be inserted (e.g. because there is no other station). One way is to compare running speeds of individual train (or train paths).
- keywords: active; capacity; cases; freight; heterogeneity; high; journey; labem; length; line; lost; number; overtaking; passenger; paths; railway; regional; section; slower; speed; time; track; train; train paths
- versions: original; plain text
- app01-3838
- author: Kamenický, Dušan
- title: TRAFFIC MANAGEMENT SYSTEM IN TERMS OF DATA EXCHANGE
- date: 2016-09-15
- words: 1780
- flesch: 35
- summary: Automatic train control system, which is designed to eliminate human error, can be supplemented by automatic train operation system or driver advisory system. The aim of dispatching is at close approximation to scheduled state, from which railway system has been deflected by external influences.
- keywords: applications; control; data; description; european; exchange; freight; infrastructure; interoperability; management; operation; parameters; passenger; path; planning; railml; railway; register; requirements; rolling; route; running; specification; stock; subsystem; system; technical; telematics; traffic; train; undertakings
- versions: original; plain text
- app01-3840
- author: Kertis, Tomáš; Procházková, Dana
- title: ASSETS OF MODEL METRO STATION AND THEIR CRITICALITY
- date: 2016-09-15
- words: 5933
- flesch: 52
- summary: They are: • station protection systems (ESA 11 M), • wayside protection systems (AŽD 71, ESA 11 M), • train protection systems (MATRA and on-board units). This procedure is a common part of formation of safety management systems in all sys- tems, i.e. also in railway domain.
- keywords: account; acta; air; assets; case; communication; complex; conditions; control; criticality; czech; data; devices; different; disasters; dispatching; emergency; energetic; equipment; etc; facilities; facility; figure; fire; following; high; human; identification; important; infrastructure; isbn; management; means; measures; metro; metro station; model; necessary; nodes; normal; operation; parts; passengers; people; polytechnica; practice; praha; proceedings; processes; procházková; protection; public; railway; republic; risks; safety; security; services; sms; sources; standard; state; station; subsystems; subway; support; system; table; technological; transport; transportation; water
- versions: original; plain text
- app01-3841
- author: Koutecký, Petr
- title: SELECTED ASPECTS OF ETCS-L3 DEPLOYMENT
- date: 2016-09-15
- words: 1847
- flesch: 45
- summary: This paper focuses on selected problem areas in the implementation of ETCS L3, analyz-es their impacts and offers a number of possible solutions as a basis for pilot testing. Keywords: ERTMS, ETCS L3, odometry, ITS-R. 1.
- keywords: accuracy; connection; control; data; equipment; error; ertms; etcs; etcs l3; factor; handling; human; level; necessary; need; occupancy; odometer; parts; possible; problem; railway; requirements; section; solution; system; technical; track; train
- versions: original; plain text
- app01-3845
- author: Nachtigall, Petr; Škárek, Martin
- title: RAILWAY INFRASTRUCTURE CAPACITY MANAGEMENT FOR AD-HOC TRAINS ON THE SŽDC NETWORK
- date: 2016-09-15
- words: 1473
- flesch: 60
- summary: Each carrier has its own interface called information system KADR with SŽDC for capacity requests management. Without its existence isn’t nowadays possible ride of any train, because KADR secures activation and deactivation of trains and information system ISOŘ on request of KADR establish the route into all other information systems.
- keywords: application; assignment; basic; capacity; carrier; desktop; information; infrastructure; kadr; list; manager; request; route; system; sždc; time; train; web
- versions: original; plain text
- app01-3847
- author: Plasek, Otto
- title: CURRENT CHALLENGES FOR RESEARCH ACTIVITIES IN THE FIELD OF RAILWAY INFRASTRUCTURE
- date: 2016-09-15
- words: 2957
- flesch: 41
- summary: The paper is aimed in the specific technical aspects of rail infrasructure, which emphasize their ability to contribute to an efficient and sustainable transport in Europe and justify motivations for increasing the attractiveness of rail transport. The necessity of transformation of rail transport to become more attractive and to increase its market share of passenger and freight transport for medium distance (up to 300 km) in 2050 is defined in this strategic plan.
- keywords: activities; advanced; construction; costs; current; czech; design; development; efficient; european; field; high; important; increase; increasing; industry; infrastructure; lines; maintenance; measures; national; new; noise; paper; projects; rail; rail transport; railway; railway infrastructure; republic; requirements; research; service; solutions; speed; strategy; substructure; superstructure; sustainable; systems; technical; technological; technology; track; traffic; transport; vibrations; white
- versions: original; plain text
- app01-3849
- author: Procházka, Jan; Procházková, Dana
- title: CRITICALLITY OF TRANSPORTATION INFRASTRUCTURE IN THE CZECH REPUBLIC
- date: 2016-09-15
- words: 6030
- flesch: 47
- summary: 3. Transportation System of the Czech Republic In the Czech Republic a transportation network is in essence created from the following areas: railway transport system; road transport system; air trans- port; and water transport. Important parts of transport system 53 Jan Procházka, Dana Procházková Acta Polytechnica CTU Proceedings systems of systems, i.e. it goes on several mutually penetrating systems of different nature (technical, or- ganizational, financial, human resources, and legal), and therefore, the criticality assessment cannot be performed from a single indicator, but it is neces- sary to use a multicriterial approach and informa- tion from experts [4].
- keywords: accidents; activities; air transport; attacks; bridges; capability; cause; considerable; criticality; criticality rate; czech; damages; defence; development; disasters; economy; emergency; environment; exchange; experts; factor; failure; functions; health; high; human; impact; importance; infrastructure; lives; management; measures; necessary; network; operation; parts; possible; procházková; protection; rail; railway; rate; repair; republic; road; road transport; safety; services; state; stations; system; territory; time; traffic; transport; transport system; transportation; transportation infrastructure; transportation system; tunnels; vulnerability; water
- versions: original; plain text
- app01-3851
- author: Šrámek, Přemysl; Molková, Tatiana
- title: THE PRIORITY OF INTERNATIONAL FREIGHT EXPRESSES IN THE OVERLAPPING SECTION OF RFC 7 AND RFC 9 KOLÍN - CESKA TREBOVA
- date: 2016-09-15
- words: 2768
- flesch: 51
- summary: Overlapping train path line sections [4] rail freight and ensure its full competitiveness, it is necessary to trace freight trains in the fixed periodic routes, which would have removed one of the main rail transport disadvantages against road transport. There were solved conflicts of station tracks, freight trains were allowed to ride before their schedule time (in the case of free capacity).
- keywords: capacity; cargo; category; corridor; czech; deadline; delay; etcs; expresses; fex; freight; high; implementation; infrastructure; international; kolín; lines; mode; passenger; paths; periodic; priority; railway; republic; results; rfc; section; simulation; timetable; total; traffic; trains; transport; třebová; uic; česká
- versions: original; plain text
- app01-3852
- author: Valehrach, Jan; Šmíd, Jaroslav
- title: MONITORING OF TRACK SECTIONS WITH LONG-PITCH CORRUGATION
- date: 2016-09-15
- words: 4368
- flesch: 62
- summary: And there is also the second aspect of the problem, which some say is even more important – that is the influence of the imperfections for the adjacent neighborhood, such as vibrations, noise and quakes, all significantly reducing the quality of life of the people living near tracks. This phenomenon occurs more often these days, since there is an effort of the track designers to maximize the speed limits as much as possible (they tend to ”squeeze out” the most of the infrastructure) and mostly could be found on tracks with very heterogeneous traffic flow, consisting of the various ratios of the passenger and freight trains.
- keywords: brod; cases; comparison; corrugation; curve; curve b; data; defects; deficiency; development; difference; direction; excess; figure; formation; freight; havlíčkův; head; infrastructure; kph; location; long; measured; measurements; measuring; monitored; monitoring; noise; passenger; pitch corrugation; possible; rail; railway; second; sections; sleeper; speed; station; track; traffic; trains; tunnel; weighted
- versions: original; plain text
- app01-3854
- author: Vopava, Jiří; Jánešová, Mária; Kratochvíl, Radek
- title: DEPLOYMENT OF ERTMS IN CZECH REPUBLIC
- date: 2016-09-15
- words: 2189
- flesch: 66
- summary: It can be configured to operate in one of the fol- lowing application levels to enable ETCS equipped vehicles to operate in not ETCS equipped system where the safe movement of the vehicle is controlled by the default national control system: Figure 1. Expected track deployment with GMS-R
- keywords: budějovice; czech; deployment; ertms; etcs; european; figure; gsm; implementation; kolín; labem; level; nad; plzeň; praha; přerov; rail; rakousko; republic; slovensko; system; track; train; vehicles; ústí; české
- versions: original; plain text
- app01-3928
- author: Slyusar, Khilda; Kulich, Miroslav
- title: FRAMEWORK FOR AD HOC NETWORK COMMUNICATION IN MULTI-ROBOT SYSTEMS
- date: 2016-11-23
- words: 7525
- flesch: 62
- summary: Simulations use robot teams of various sizes and display measurement results that are close to the conditions of the real world. Description of the software architecture of a single robot performing distributed exploration and com- municating with other robots making use of AODV follows in the next paragraphs.
- keywords: algorithm; aodv; application; approach; communication; comparison; conference; control; current; data; delay; destination; discovery; doi:10.1109; dsdv; dsr; environment; exploration; fig; framework; goal; ieee; implementation; information; international; laser; library; main; map; means; members; messages; meters; mobile; model; multi; nanomsg; network; new; nodes; number; overhead; packet; path; performance; plan; proactive; problem; proceedings; process; protocol; range; reactive; results; robot; robotics; route; routing; routing protocols; scans; sender; single; size; source; steps; structure; systems; table; tcp; team; terrain; thread; time; value; wireless; zeromq
- versions: original; plain text
- app01-3929
- author: Steininger, M.; Stephan, C.; Böhm, C.; Sauer, F.; Zink, R.
- title: MAPPING THE SURROUNDINGS AS A REQUIREMENT FOR AUTONOMOUS DRIVING
- date: 2016-11-23
- words: 4119
- flesch: 65
- summary: The coordinate system of the returned 3D point cloud (as camera coordinate system in the following; indicated with a car subscript) does not match with the coordinate system of the car (as car coordinate system in the following; indicated with a camera subscript). Today, the recognition of the environment of the car is mostly done by a mix of sensors like LiDAR, RADAR and cameras.
- keywords: approach; autonomous; camera; capturing; car; colour; coordinate; data; depth; detection; dimensional; distance; driving; environment; figure; filtering; frame; gaussian; ground; image; information; infrared; kinect; kinect camera; light; main; mapping; microsoft; model; navigation; new; objects; obstacles; pixel; plane; points; problem; processing; project; projection; range; robot; scaling; sensor; space; spatial; step; surroundings; system; time; value; vehicle
- versions: original; plain text
- app01-3930
- author: Váňa, Petr; Faigl, Jan
- title: THE DUBINS TRAVELING SALESMAN PROBLEM WITH CONSTRAINED COLLECTING MANEUVERS
- date: 2016-11-23
- words: 4890
- flesch: 61
- summary: Further, we con- sidered collecting maneuvers restricted to straight line segments with fixed length and its specified relative position to the target that is denoted as the DTSP with straight collecting maneuvers (DTSP-SCM). An example of the DTSP-CM instance with straight collecting maneuvers in a cargo airdrop mission.
- keywords: airdrop; algorithm; approaches; collecting; collecting maneuvers; dropping; dtsp; dtsp approaches; dubins; evaluation; fig; figure; formulation; heading; instance; length; line; location; maneuvers; method ●; mission; modifications; object; optimization; ordinary; particular; path; planning; position; possible; problem; proceedings; results; salesman; salesman problem; sampling; scm; section; segments; set; solution; solver; straight; target; target location; tour; variant; vehicle; ● aa; ● ●
- versions: original; plain text
- app01-3951
- author: Dirisamer, Florian; Çakmak, Umut D.; Kállai, Imre; Machado, Martín; Major, Zoltán
- title: COMPARISON OF VIRTUAL FIELDS METHOD, PARALLEL NETWORK MATERIAL MODEL AND FINITE ELEMENT UPDATING FOR MATERIAL PARAMETER DETERMINATION
- date: 2016-12-09
- words: 2850
- flesch: 55
- summary: Extracting material parameters from test specimens is very intensive in terms of cost and time, especially for viscoelastic material models, where the parameters are dependent of time (frequency), temperature and environmental conditions. The nonlinear inherent viscoelastic material behaviour of the EPDM Shore A 50 with a maxi- mum elongation of several hundred percent makes it further complicated to extract material parameters for the whole range of time (frequency), temperature and environmental conditions relevant for the appli- cation
- keywords: ajor; biaxial; computational; data; dependent; dic; different; displacement; effort; element; experimental; feu; fields; figure; finite; image; inor; load; material; method; mm s−1; model; network; parallel; parameters; pnmm; procedure; relaxation; results; shear; strain; stress; s−1; temperature; test; time; vfm; virtual; workflow; çakmak; εxx; εyy
- versions: original; plain text
- app01-3953
- author: Gutermann, Marc; Schröder, Carsten
- title: NUMERICAL DISCRETISATION OF BUILT STRUCTURES ASSUMPTION AND REALITY
- date: 2016-12-09
- words: 2190
- flesch: 47
- summary: The results showed, that there was an effective load transfer in the backing and that this influence stays constant even at higher load levels including partial safety factors (see Tab. 1). The modelling of boundary conditions as well as material parameters were calibrated using experimental results and led to a more realistic folded-plate-discretisation (see Fig. 3).
- keywords: acta; analysis; arch; assessment; boundary; bridge; calculation; capacity; carrying; concrete; conditions; discretisation; experimental; fig; figure; foundation; gutermann; higher; influence; load; masonry; material; model; non; numerical; parameters; polytechnica; proceedings; results; simple; static; steel; structures; system; truss
- versions: original; plain text
- app01-3954
- author: Hrbek, Vladimír; Koudelková, Veronika; Padevět, Pavel; Šašek, Petr
- title: MICROSCOPIC FEATURES OF CEMENT PASTE MODIFIED BY FINE PERLITE
- date: 2016-12-09
- words: 2966
- flesch: 53
- summary: The investigation of microstructure with SEM proved the interaction of fine perlite lamella with cement matrix and integration of whole perlite particles. According to Table 2, specimens containing 10% of fine perlite substitution (ModCem 0.10) exhibit low-
- keywords: addition; applied; area; bending; binder; cement; cementitious; chemical; clinker; composite; compressive; concrete; content; csh; different; doi; figure; fine; force; gpa; indentation; individual; instrumented; investigation; lamella; macromechanical; macroscopic; material; maximum; mechanical; modcem; modulus; mpa; particles; paste; perlite; phases; properties; pure; reduced; results; sample; sem; specimen; strength; table; testing
- versions: original; plain text
- app01-3956
- author: Kalteis, Anna; Reiter, Martin; Jerabek, Michael; Major, Zoltán
- title: VALIDATION AND IMPLEMENTATION OF FAILURE PARAMETERS IN INTEGRATED SIMULATIONS FOR SHORT FIBRE REINFORCED POLYPROPYLENE
- date: 2016-12-09
- words: 3880
- flesch: 56
- summary: Simulation model of tensile test As the specimens show a fibre orientation distribu- tion through the thickness this distribution has to be discretised for the simulation model. Simulation model with 4 layers.
- keywords: description; determined; different; digimat; distribution; elastic; engineering; experiment; failure; fibre; figure; glass; hardening; hybrid; layer; linz; low; material; matrix; method; model; modelling; modulus; mpa; orientation; parameters; polymer; rate; results; reverse; short; simulation; simulation model; software; solution; specimens; speed; strain; strength; stress; table; tensile; test; validation; viscoplastic
- versions: original; plain text
- app01-3957
- author: Krčmářová, Nela; Šleichrt, Jan; Fíla, Tomáš; Koudelka, Petr; Kytýř, Daniel
- title: DEFORMATION BEHAVIOUR OF GELLAN GUM BASED ARTIFICIAL BONE STRUCTURES UNDER SIMULATED PHYSIOLOGICAL CONDITIONS
- date: 2016-12-09
- words: 2355
- flesch: 57
- summary: Elastic properties of GG samples with 50 wt% BAG for compression test sample Elastic properties of GG samples with 50 wt% BAG for tensile test sample
- keywords: acta; bag; bioactive; bone; compression; conditions; ctu; czech; deformation; elastic; engineering; experimental; force; gellan; gg00; gg50; gg70; glass; gum; loading; material; mpa; physiological; plain; polytechnica; prague; proceedings; properties; results; samples; scaffold; simulated; strain; stress; table; tensile; test; tissue; wet; wt%
- versions: original; plain text
- app01-3959
- author: Liebold, Christian; Müller, Wolfgang H.
- title: 1D HERMITE ELEMENTS FOR C1-CONTINUOUS SOLUTIONS IN SECOND GRADIENT ELASTICITY
- date: 2016-12-09
- words: 3424
- flesch: 63
- summary: Hermite elements for global c1–continuity Structure of the element stiffness- and system matrix By using Hermite elements as base functions Eq.
- keywords: beam; bending; continuity; continuum; derivative; dimensions; dζ2; dζ3; effect; elasticity; element; energy; engineering; example; fig; figure; finite; functions; global; gradient; hermite; higher; ijk; length; liebold; linear; loads; material; matrix; mechanics; modified; müller; numerical; order; parameters; problem; second; size; solution; strain; system; theory; university; 𝐿 𝐸; 𝑊 𝐿; 𝑥/𝐿
- versions: original; plain text
- app01-3961
- author: Markowski, Jan; Lohaus, Ludger
- title: UHPC SANDWICH STRUCTURES WITH COMPOSITE COATING UNDER COMPRESSIVE LOAD
- date: 2016-12-09
- words: 2757
- flesch: 55
- summary: Mechanical System – Conceptual Approach UHPC sandwich structures with composite coating serve as multipurpose load-bearing elements, predom- inantly for compressive loads. The composite layer fulfills different tasks: Its fibres act as a structural component (as described in para.2.1) and its matrix protects the outer steel tube’s surface from corrosion.
- keywords: area; bearing; behaviour; capacity; coating; composite; compressive; concrete; construction; core; cross; experimental; figure; force; inner; introduction; layer; load; material; maximum; mm2; outer; ratio; residual; results; sandwich; section; series; specimen; steel; structures; table; tube; uhpc; weight
- versions: original; plain text
- app01-3964
- author: Pouran, Omid; Harte, Reinhard; Peter, Carsten
- title: PARAMETERS AFFECTING THE STRUCTURAL ANALYSIS OF A TUNNEL STRUCTURE EXPOSED TO FIRE
- date: 2016-12-09
- words: 3141
- flesch: 53
- summary: Further, the maximum value of thermal strains for PP fibres concretes is lower compared to the EN 1992-1-2 curve. The lower value of maximum thermal strain for PP fibres concrete is due to a smaller crack divisions at PP fibres concrete and composition of less internal stress.
- keywords: account; analysis; behaviour; compressive; concrete; corresponding; cover; curve; design; different; effects; exposure; fibres; figure; fire; germany; influence; ing; material; mechanical; minutes; model; parameters; results; specimen; strain; strength; structural; t,0,d; temperature; tests; thermal; time; transient; tunnel; values; wuppertal; ztv
- versions: original; plain text
- app01-3967
- author: Saubke, Vanessa; Höffer, Rüdiger
- title: EXPERIMENTAL, NUMERICAL AND ANALYTICAL INVESTIGATIONS OF WIND-INDUCED NET PRESSURES FOR INDUSTRIAL BUILDINGS WITH ENVELOPE POROSITIES
- date: 2016-12-09
- words: 3761
- flesch: 61
- summary: Therefore mean val- ues of external pressure coefficients from wind tunnel tests of a building with similar proportional dimen- sions from the TPU Aerodynamic Database In order to detect the reason for the damage the wind-induced loads were studied by i) wind tunnel experiments on the external pressures due to different wind directions, ii) analytical investigations of internal pressure due to envelope porosities and planned openings and iii) numerical analyses for the internal and the external pressure.
- keywords: analytical; area; building; case; coefficients; considered; construction; cpe; cpi; different; direction; distribution; eurocode; external; face; figure; gates; general; internal; internal pressure; investigations; long; method; net; numerical; openings; porosity; position; pressure; pressure coefficients; regulation; results; roof; sheets; table; tests; tunnel; values; velocity; wind; zone
- versions: original; plain text
- app01-3970
- author: Anders, Steffen; Schovenberg, Melanie
- title: PERFORMANCE OF STEEL FIBER REINFORCED CONCRETE – COMPARABILITY OF TESTS ACCORDING TO DAFSTB-GUIDELINE "STAHLFASERBETON" AND EN 14651
- date: 2016-12-09
- words: 1823
- flesch: 60
- summary: Keywords: steel-fiber reinforced concrete, performance classes, post-peak flexural strength. In both guidelines, performance of SFRC is measured in terms of post-peak flexural strengths.
- keywords: concrete; crack; dafstb; deflection; evaluation; fiber; fig; flexural; guideline; mid; peak; performance; point; post; span; stahlfaserbeton; strain; strength; test
- versions: original; plain text
- app01-3972
- author: Louzada, Emilio Luiz Vieira; Guilherme, Carlos Eduardo Marcos; Stumpf, Felipe Tempel
- title: EVALUATION OF THE FATIGUE RESPONSE OF POLYESTER YARNS AFTER THE APPLICATION OF ABRUPT TENSION LOADS
- date: 2016-12-09
- words: 1737
- flesch: 60
- summary: A total of eight ranges of tension loads were used during the cyclic tests: 10-90%YBL, 20- 90%YBL, 30-90%YBL, 40-90%YBL, 50-90%YBL, 60- 90%YBL, 70-90%YBL, 80-90%YBL. Effect of impact load on the fatigue life of PET Figure 3 shows the number of cycles up to failure versus the minimum load of each load range in the case of virgin samples and damaged samples.
- keywords: abrupt; cables; cycles; cyclic; elongation; fatigue; figure; impact; industry; life; load; material; mooring; oil; pet; polyester; proceedings; quasi; rupture; samples; static; tension; tests; virgin; yarns; ybl
- versions: original; plain text
- app01-3975
- author: Zahn, Anna; Balzani, Daniel
- title: MODELING OF ANISOTROPIC GROWTH AND RESIDUAL STRESSES IN ARTERIAL WALLS
- date: 2016-12-09
- words: 4417
- flesch: 57
- summary: In contrast to the circumferential direction, where unloading and slicing are two different operations, the compution af axial residual stresses is tricky and demands further meditation. Computational modeling of arterial wall growth.
- keywords: acta; anisotropic; applied; arterial; axial; balzani; biological; biomechanics; boundary; circumferential; computational; conditions; configuration; ctu; deformation; different; direction; displacement; distributions; elastic; equations; example; factors; fiber; figure; growth; internal; kpa; load; material; modeling; numerical; opening; pressure; proceedings; radial; residual; residual stresses; segment; state; stresses; tensor; tissue; vectors; walls; ϑ(a),k; ∂ce; ∂fg; ∣∣∣∣∣
- versions: original; plain text
- app01-3977
- author: Krčmářová, Nela; Šleichrt, Jan; Doktor, Tomáš; Kytýř, Daniel; Jiroušek, Ondřej
- title: SEMI–AUTOMATED ASSESSMENT OF MICROMECHANICAL PROPERTIES OF THE METAL FOAMS ON THE CELL-WALL LEVEL
- date: 2016-12-09
- words: 2397
- flesch: 48
- summary: Micro-mechanical testing of metal foam cell walls using miniature three- point bending. Therefore hardness was assessed using traditional method by measuring the imprint dimensions and evaluated as Vickers hardness: HV = F A ≈ 0.1819F d2 , (1) where F is indentation load in N, A is resulting indentation area of the imprint of the indenter in mm2 and d is average length of the diagonal of the imprint of the indenter in mm.
- keywords: accuracy; alporas; aluminium; average; camera; cell; czech; data; description; device; evaluation; fig; foam; hardness; imprint; indentation; indents; level; load; materials; measured; measurement; mechanical; metal; method; positioning; prague; properties; sample; software; specimen; surface; testing; value; vickers; wall
- versions: original; plain text
- app01-4004
- author: Abishev, Kairatolla; Mukanov, Ruslan B.; Kasenov, Asylbek Zh.; Baltabekova, Almagul N.
- title: AN ISSUE OF INTELLIGENT ROAD TRANSPORT IN KAZAKHSTAN
- date: 2017-12-15
- words: 1934
- flesch: 39
- summary: Keywords: The Republic of Kazakhstan, automobile transport, Intelligent transport systems, dis- patching system. The introduction of intelligent transport systems will facilitate the organization of international transport, cargo tracking, and reduce the time of delivery, pro- vide high performance and security of transport and logistics processes.
- keywords: acta; automobile; communication; complex; conditions; ctu; development; economic; economy; goods; human; important; improvement; information; intelligent; introduction; kazakhstan; location; modern; navigation; polytechnica; proceedings; process; republic; road; role; safety; sector; systems; technological; technologies; traffic; transport; transportation
- versions: original; plain text
- app01-4006
- author: Bouchner, Karel; Mashko, Alina
- title: MODEL CAR TRANSPORT SYSTEM - MODERN ITS EDUCATION TOOL
- date: 2017-12-15
- words: 2434
- flesch: 54
- summary: Model vehicles are equipped with an electric motor, a steering apparatus, a rechargeable battery, an on/off switch on the bottom of the car to start it and a reed sensor that responds to magnet effect. Physical part of road construction in differ- ent sections (left – four-way highway, right – elevated intersection) and model vehicles. highway.
- keywords: acta; branch; car; cities; city; control; crossing; different; elements; etc; figure; functional; highway; infrastructure; junctions; laboratory; lights; model; motor; operation; parking; physical; polytechnica; prague; proceedings; real; road; sections; sensors; smart; source; speed; stop; system; technical; traffic; transport; transportation; vehicles
- versions: original; plain text
- app01-4009
- author: Deleenheer, William; Jáneš, Lukáš; Jayakumar, Akshaya
- title: DEVELOPMENT OF AN ELECTRIC BICYCLE FOR A SHARING SYSTEM IN PRAGUE
- date: 2017-12-15
- words: 6199
- flesch: 63
- summary: Keywords: e-bike sharing, requirements, e-bike design, motor power, battery capacity. Conclusion It is clear that e-bike sharing is a useful technology which can be a transportation method made ready to fit to a wide range of possible users.
- keywords: 36v; acceleration; acta; available; average; batteries; battery; bicycle; bike; bike sharing; buildings; capacity; cells; centre; certain; comfort; configuration; controller; ctu; current; cycling; data; design; development; different; drive; driving; easy; electric; energy; experiments; figure; general; high; higher; human; input; low; main; market; mass; maximum; means; mid; minimal; motor; necessary; normal; online; pack; polytechnica; possible; power; prague; proceedings; project; rate; requirements; research; resistance; rider; sharing; software; speed; station; students; system; throttle; time; transport; transportation; trip; university; user; values
- versions: original; plain text
- app01-4011
- author: Holub, Martin; Šrutová, Martina; Lhotská, Lenka
- title: MICROSLEEPS AND THEIR DETECTION FROM THE BIOLOGICAL SIGNALS
- date: 2017-12-15
- words: 3807
- flesch: 61
- summary: EEG signal, especially its slow wave activity, considered to be the most predictive and reliable for the level of alertness. In spite of the detection from EEG signal is the most common method, EOG based approaches can also be very efficient and more driver-friendly.
- keywords: acta; activity; alpha; analysis; approaches; automatic; biological; brain; changes; classification; csd; delta; detection; detector; doi:10.1016; driver; drowsiness; ecg; eeg; engineering; eog; et al; events; eye; fatigue; features; frequency; heart; ieee; journal; level; method; microsleeps; movements; neural; performance; power; processing; rate; seconds; signals; sleep; slow; spectral; states; study; system; theta; time; variability; wavelet
- versions: original; plain text
- app01-4012
- author: Chudjaková, Inga; Tobiška, Jaromír
- title: QFD EXAMPLE IN INTERACTION WITH HMI
- date: 2017-12-15
- words: 1603
- flesch: 56
- summary: Thanks to QFD methods, the designers can understand what customers want and it designs the product. For the practical example of using QFD method, we need to optimize the display to ensure safe operation while driving.
- keywords: application; assurance; automotive; contrast; customers; development; display; driving; expectations; figure; hmi; industry; influence; matrix; method; parameters; product; qfd; qfd matrix; qfd method; quality; requirements; technical; use
- versions: original; plain text
- app01-4014
- author: Jirkovsky, Vaclav
- title: ANALYSIS OF STORED DATA HELP TO PROPOSE AND GENERATE NEW TRACKS
- date: 2017-12-15
- words: 2229
- flesch: 65
- summary: These elements of common behavior can be used to create virtual track for experiments. The algorithm for automatic creation of virtual track based on type of experiment is provided.
- keywords: algorithm; analysis; arcs; automatic; behavior; bouchner; car; ctu; data; devices; different; driver; driving; elements; experiments; generation; help; new; point; possible; prague; proceedings; properties; research; road; segment; simulators; testing; track; traffic; type; vehicle; virtual
- versions: original; plain text
- app01-4016
- author: Kalašová, Alica; Kubíková, Simona; Kapusta, Ján
- title: THE RELATION BETWEEN DRIVER BEHAVIOR AND INTELLIGENT TRANSPORT SYSTEM
- date: 2017-12-15
- words: 3116
- flesch: 54
- summary: In this context that regarding the European area of road traffic safety, the European Commission enforces reduction of the number of road traffic fatalities by half in comparison with 2010 as a priority for years 2011 to 2020[1]. In recent years, the Slovak Republic managed to lower the number of traffic accidents. From the perspective of a driver it concerns, in particular, the possibility of using alternative routes when traffic accidents or other obstacles occurs on the route that would significantly affect the continuity and safety of road traffic.
- keywords: accidents; active; analysis; available; destination; driver; european; figure; i/18; important; indicators; information; intelligent; intelligent transport; intensity; kraľovany; necessary; network; number; rate; republic; road; route; safety; section; shows; situation; slovak; survey; systems; table; time; traffic; traffic accidents; transport; transport systems; žilina
- versions: original; plain text
- app01-4018
- author: Mashko, Alina
- title: SUBJECTIVE METHODS FOR ASSESSMENT OF DRIVER DROWSINESS
- date: 2017-12-15
- words: 2770
- flesch: 56
- summary: Another method used in experimental investigation of driver fatigue is observer rated sleepiness (ORS). The method can be used for validation of other measures or as a separate measure of driver fatigue [23]. 4. Subjective evaluation during experiments on driver simulator All observations described in this chapter are related to experiments conducted on a full body (Skoda Superb) fixed driving simulator based on a wide projection angle (210° of driver’s view is provided with 5 screens plus 2 screens for side mirrors.
- keywords: accident; activity; analysis; behavior; blinking; conference; control; ctu; definition; detection; driver; driving; drowsiness; drowsy; evaluation; experiments; eye; fatigue; figure; head; human; individual; lane; measurements; methods; observation; observers; performance; position; possible; rate; rating; real; research; scale; self; simulator; sleepiness; state; steering; subjective; time; traffic; vehicle; wheel
- versions: original; plain text
- app01-4021
- author: Matowicki, Michal; Přibyl, Ondřej
- title: CROSS-STUDY RESEARCH ON UTILITY AND VALIDITY OF DRIVING SIMULATOR FOR DRIVER BEHAVIOR ANALYSIS
- date: 2017-12-15
- words: 4326
- flesch: 50
- summary: Consistently with other researches Bella conducted that simulator speeds were different than in the real world, although in [2] mean speed in simulator was higher than in real world while in [15] it was on the contrary. Nevertheless, the differences in simulator speeds and in the field speeds for each point were not significantly different, demonstrating at minimum, interactive relative validity of static sim- ulator tool for assessing speed.
- keywords: absolute; analysis; authors; behaviour; bella; conclusions; conditions; control; cross; data; different; distance; drivers; driving; experience; experiment; higher; important; lateral; lee; literature; mean; measures; overall; paper; participants; performance; performed; phone; physiological; position; proceedings; real; relative; relative validity; research; results; risk; road; similar; simulator; speed; studies; study; table; tasks; tool; topic; traffic; transportation; validation; validity; vehicle; work; world
- versions: original; plain text
- app01-4022
- author: Mík, Josef; Kadlecová, Jana
- title: CORRELATION ANALYSIS OF VEHICLE FRONTAL IMPACT PARAMETERS
- date: 2017-12-15
- words: 2600
- flesch: 56
- summary: As it can be seen from Table 1 and 2, the constella- tions of test vehicles contain vehicles equipped with different types of passive safety systems. Results of crash tests – characteristic of test vehicles.
- keywords: acceleration; accident; analysis; barrier; body; case; coefficient; collision; correlation; crash; criteria; deformation; dependency; ecall; equation; figure; frontal; function; head; impact; overlap; parameters; regression; results; rigid; system; test; value; vehicle; velocity; škoda
- versions: original; plain text
- app01-4023
- author: Orlický, Adam
- title: AUTOMATIC GENERATION OF ROAD INFRASTRUCTURE IN 3D FOR VEHICLE SIMULATORS
- date: 2017-12-15
- words: 1886
- flesch: 59
- summary: Besides the generation of road infrastructure models, a tool (plug-in) should be able to complete a scene around roads in such a way, that the resulting virtual scenery would be as close to reality as possible. Unlike the TIN models, the NURBS models are more pre- cise, while there is a possibility of transformation of NURBS models into TIN models with setting the quality of created TIN models in Rhinoceros software.
- keywords: created; creation; czech; driver; driving; figure; functions; generation; infrastructure; modeling; models; nurbs; plug; possible; proceedings; representation; road; scenes; simulator; software; tin; track; vehicle; virtual; čsn
- versions: original; plain text
- app01-4027
- author: Rothkrantz, Leon; Toma, Madalina; Popa, Mirela
- title: AN INTELLIGENT CO-DRIVER SURVEILLANCE SYSTEM
- date: 2017-12-15
- words: 6729
- flesch: 62
- summary: There were other car drivers on the road driving both in a low and high speed speed. In driving domain, they have been called advanced driver assistance systems
- keywords: acta; actions; activity; alert; analysis; architecture; basic; behavior; body; car; car driver; cars; case; dangerous; data; detection; device; different; digital; driver; driving; environment; estimation; example; experiments; figure; gaze; hand; head; human; important; information; intelligent; intention; interaction; kinect; lane; left; model; motion; movements; orientation; parts; polytechnica; pose; position; possible; proceedings; radio; regions; related; right; road; rothkrantz; rule; scenarios; section; sensors; sequence; set; signal; simulator; single; situation; speed; state; steering; surveillance; system; table; time; tool; track; traffic; wheel
- versions: original; plain text
- app01-4028
- author: Rozhdestvensky, Dmitry; Fulem, Josef
- title: SIMULATION OF ELECTRIC AND HYBRID VEHICLES IN A VEHICLE SIMULATOR BASED ON A DETAILED PHYSICAL MODEL, FOR THE PURPOSE OF HMI EVALUATION
- date: 2017-12-15
- words: 2253
- flesch: 51
- summary: Possible experiments with detailed consumption model After the vehicle model and simulation environment has been created, an experiment itself should be de- signed. 3. Function mockup interface Functional Mock-up Interface (FMI) is a standard to support both model exchange and co-simulation of dynamic models developed in different independent tools, its primary goal is to support the exchange of simulation models between suppliers and OEMs, providing a possibility to protect product knowledge, which could be recovered from these models.
- keywords: acta; architecture; article; battery; components; control; ctu; czech; data; development; electric; engine; environment; evaluation; experiments; figure; fmi; hev; hmi; hybrid; ignite; integration; interface; language; model; modelica; modeling; physical; polytechnica; powertrain; prague; proceedings; results; simulation; software; system; type; user; validation; vehicle
- versions: original; plain text
- app01-4029
- author: Ruzek, Martin
- title: ARTIFICIAL NEURAL NETWORK FOR MODELS OF HUMAN OPERATOR
- date: 2017-12-15
- words: 3268
- flesch: 59
- summary: On the other hand, the classical paradigms of artificial neural networks are not suitable because they simplify too much the real processes in biological neural network. The search for a compromise between the complexity of biological neural network and the practical feasibility of the artificial network led to a new learning algorithm.
- keywords: algorithm; architecture; artificial; artificial neural; biological; biological neural; change; data; higher; homeostatic; human; idea; information; layer; learning; model; network; neural; neural network; neuron; new; operator; output; point; possible; processes; real; reference; reference neuron; růžek; signal; utility; weights
- versions: original; plain text
- app01-4031
- author: Skolilova, Petra
- title: THE FUTURE OF PASSENGER AIR TRANSPORT – VERY LARGE AIRCRAFT AND OUT KEY HUMAN FACTORS AFFECTING THE OPERATION AND SAFETY OF PASSENGER AIR TRANSPORT
- date: 2017-12-15
- words: 2151
- flesch: 62
- summary: Of this demand for passenger aircraft, 40% will be for the replacement of ageing, less fuel efficient aircraft and 60% of the demand will be for growth[3]. Almost 80% of the world aircraft accidents are caused by human error based on wrong action, reaction or final decision of pilots, the catastrophic failures of aircraft systems, or air traffic control errors are not so frequent.
- keywords: a380; airbus; aircraft; airlines; amcs; aviation; capacity; ctu; demand; error; factors; fatigue; future; haul; human; large; level; long; management; markets; means; middle; new; operation; passenger; people; right; safety; system; today; traffic; training; transport; vla; vlas; world
- versions: original; plain text
- app01-4033
- author: Thöndel, Evžen
- title: INTERACTIVE MOTION PLATFORMS AND VIRTUAL REALITY FOR VEHICLE SIMULATORS
- date: 2017-12-15
- words: 1562
- flesch: 45
- summary: Interactive motion platforms are intended for vehicle simulators, where the direct interaction of the human body is used for controlling the simulated vehicle (e.g. bicycle, motorbike or other sports vehicles). The second use of interactive motion platforms is for entertainment purposes or fitness.
- keywords: degrees; design; direct; dynamic; figure; freedom; human; interactive; mathematical; model; motion; motion platform; new; platform; reality; response; sickness; simulators; system; use; vehicle; virtual
- versions: original; plain text
- app01-4034
- author: Topol, Libor; Drahotský, Ivo
- title: DANGEROUS DRIVER’S BEHAVIOR
- date: 2017-12-15
- words: 1680
- flesch: 62
- summary: Traffic accidents are a major social issue. The table tracks a noticeable increase of fatalities in traffic accidents.
- keywords: accidents; acta; age; aggressive; behavior; bouchner; car; case; ctu; czech; dangerous; driver; driving; fatalities; group; high; indicators; isbn; lack; number; polytechnica; proceedings; republic; road; safety; study; table; traffic; training; vehicle; young
- versions: original; plain text
- app01-4082
- author: Foreword, Editorial,
- title: INTEROPERABILITY OF RAILWAY TRANSPORT IRICoN 2016
- date: 2016-09-15
- words: 994
- flesch: 23
- summary: © Czech Technical University in Prague, 2016. 5/2016 Scientific Student Conference Interoperability of Railway Transport IRICoN 2016 May 4, 2016 Prague, Czech Republic organised by: Faculty of Transportation Sciences Czech Technical University in Prague sponsored by: Internal Grant Agency CTU SVK 46/16/F6 guest editors: Jitka Jírová (Faculty of Transportation Sciences, Czech Technical University in Prague) Jitka Řezníčková (Faculty of Transportation Sciences, Czech Technical University in Prague) local organizing comittee: Vít Fábera Tomáš Brandejský Jitka Jírová Dušan Kamenický Petr Koutecký Jitka Řezníčková Jan Zelenka scientific comittee: Tomáš Brandejský (Faculty of Transportation Sciences, Czech Technical University in Prague)
- keywords: ctu; czech; czech republic; czech technical; dept; engineering; european; faculty; infrastructure; interoperability; prague; project; railway; republic; research; sciences; scientific; technical; transportation; transportation sciences; university
- versions: original; plain text
- app01-4098
- author: Pešlová, Františka; Koštialiková, Daniela; Veselý, Richard; Dubec, Andrej; Puchnin, Maxim
- title: MICROSCOPIC EVALUATION OF THE QUALITY OF DENTAL REPLACEMENT
- date: 2017-06-30
- words: 1311
- flesch: 47
- summary: Based on the microscopic observations, the pene- tration of ceramic material into the irregular areas of metal originating from the manufacturing process has been identified. Figure 4. Penetration of ceramic material.
- keywords: acta; alloy; ceramic; chemical; composition; contact; crown; czech; dental; figure; layer; manufacturing; material; metal; microscopic; microstructure; polytechnica; prague; preparation; proceedings; quality; replacement; technical; tooth; university
- versions: original; plain text
- app01-4105
- author: Mikšovský, Jan; Jelínek, Miroslav; Písařík, Petr; Kocourek, Tomáš; Remsa, Jan; Jurek, Karel
- title: DLC/TI THIN FILMS PROPERTIES PREPARED BY HYBRID LASER TECHNOLOGIES
- date: 2017-06-30
- words: 1906
- flesch: 67
- summary: From left wearability of the Ti6Al4V substrate and samples Ti:DLC7(pure DLC), Ti:DLC10 (5 at.% Ti) and Ti:DLC12(25 at.% Ti).
- keywords: adhesion; at.%; at.% ti; concentration; content; corrosion; czech; deposition; dlc; dual; films; hardness; laser; layers; method; pld; prague; prepared; properties; samples; technique; testing; tests; titanium; wearability
- versions: original; plain text
- app01-4106
- author: Rampichová, Michala; Buzgo, Matej; Lukášová, Věra; Míčková, Andrea; Vocetková, Karolína; Sovková, Věra; Rustichelli, Franco; Amler, Evžen
- title: FUNCTIONALIZATION OF 3D FIBROUS SCAFFOLDS PREPARED USING CENTRIFUGAL SPINNING WITH LIPOSOMES AS A SIMPLE DRUG DELIVERY SYSTEM
- date: 2017-06-30
- words: 1663
- flesch: 51
- summary: 3D materials supporting cell adhesion, infiltration and proliferation are crucial for bone tissue engineering. Cell adhesion, proliferation and osteogenic differentiation were determined.
- keywords: adhesion; cell; centrifugal; czech; delivery; differentiation; drug; effect; engineering; fibers; fibrous; fig; liposomes; materials; molecules; osteogenic; pbs; pcl; pl1; proliferation; release; results; samples; scaffolds; spinning; study; system; tissue
- versions: original; plain text
- app01-4107
- author: Vrbova, Radka; Bradna, Pavel; Bartos, Martin; Himmlova, Lucie; Horazdovsky, Tomas
- title: THE CURRENT VIEW ON THE USE OF RECONSTRUCTION MATERIALS IN DENTISTRY
- date: 2017-06-30
- words: 1453
- flesch: 49
- summary: Keywords: hard dental tissues, tooth decay, erosion, dental materials. The range of dental materials intended for dental tissue reconstruction is extensive.
- keywords: acid; acta; composite; ctu; czech; decay; dental; enamel; erosion; fig; figure; hard; japan; light; materials; mechanical; polymerization; polytechnica; prague; proceedings; properties; reconstruction; substances; surface; tissues; tooth; typical; university
- versions: original; plain text
- app01-4242
- author: Kolegar, Tomas; Matousek, Martin; Vilemova, Monika; Stary, Vladimir
- title: ADHESION OF BIOCOMPATIBLE TiNb COATING
- date: 2017-06-30
- words: 1345
- flesch: 61
- summary: Further experiments will involve changing parameters of the surface roughness, combination of epoxy adhesion and film adhesion. Preparation of a coating with a high quality requires good adhesion of the film to the substrate.
- keywords: 316l; adhesion; aisi; alloys; average; base; biocompatible; body; coating; doi; experiment; high; human; materials; measured; mpa; sample; strength; surface; table; tensile; ti6al4v; tinb; titanium; ultimate; uts
- versions: original; plain text
- app01-4395
- author: Čapek, Jiří; Pitrmuc, Zdeněk; Kolařík, Kamil; Beránek, Libor; Ganev, Nikolaj
- title: COMPARISON OF PARAMETERS OF SURFACE INTEGRITY OF MACHINED DUPLEX AND AUSTENITE STAINLESS STEELS IN RELATION TO TOOL GEOMETRY
- date: 2017-07-28
- words: 3883
- flesch: 61
- summary: On the contrary, for duplex steel, there are clearly differences in RS values depending on side rake angle in both austenite and ferrite phase. With in- creasing positive side rake angle, the amount of strain- induced martensite decreases.
- keywords: +12; analysis; angle; austenite; austenite steel; barkhausen; chip; cutting; deformation; dependence; determination; determined; diffraction; direction; drilling; duplex; feed; ferrite; figs; gradients; high; higher; hole; layers; machined; martensite; material; method; noise; parameters; phase; plastic; positive; presence; properties; rake; rake angle; ratio; ray; reason; residual; stainless; steel; strain; stresses; surface; tangential; tensile; tool; value
- versions: original; plain text
- app01-4396
- author: Dudr, Martin; Šimek, Daniel; Drahokoupil, Jan
- title: PHASE ANALYSIS OF NITI WIRE BASED ON SYNCHROTRON 2D X-RAY DIFFRACTION PATTERN IN MATLAB
- date: 2017-07-28
- words: 3265
- flesch: 61
- summary: Keywords: nitinol spring, combined load, X-Ray diffraction, phase analysis, synchrotron. Phase analysis of NiTi wire based on synchrotron 2D XRD pattern mm 0 1 2 3 4 5 6 7 8 9 10 m m 0 0.5 1 Figure 1.
- keywords: acta; analysis; austenite; correction; ctu; data; diffraction; factor; figure; fit; fitting; images; integrated; integration; intensity; lines; martensite; niti; parameters; pattern; phase; polytechnica; possible; proceedings; profile; quantitative; regions; results; sample; scan; sectors; sum; synchrotron; texture; volume; wire
- versions: original; plain text
- app01-4399
- author: Supinkova, Tatana; Jirka, Ivan; Drahokoupil, Jan; Langmaier, Jan; Fila, Vlastimil; Brabec, Libor; Kocirik, Milan
- title: REMOVAL OF DIQUATERNARY AMMONIUM CATIONS FROM AS-SYNTHESIZED SSZ-16 ZEOLITE
- date: 2017-07-28
- words: 3776
- flesch: 56
- summary: Role of SDA species in synthesis of SSZ-16 Essential components for zeolite synthesis are silica, alumina, source of alkali, SDA and water. Powder X-ray diffraction (XRD) technique was used to determine crystallinity and phase purity of zeolite SSZ-16 particles.
- keywords: acta; adsorption; afx; ammonium; atoms; calcined; catalytic; cations; cavities; chem; concentration; conditions; content; crystalline; crystallization; czech; decomposition; dication; diquat-52; diquaternary; doi:10.1016; et al; et6; figure; framework; mass; mater; materials; membered; mesoporous; microporous; mixtures; molecules; oxygen; particles; phase; polytechnica; pore; prague; proceedings; purity; ray; removal; rings; samples; sda; silica; size; small; solutions; species; ssz-16; structure; synthesis; temperature; thermal; type; zeolite; zeolite ssz-16
- versions: original; plain text
- app01-4401
- author: Trojan, Karel; Hervoches, Charles; Kolařík, Kamil; Ganev, Nikolaj; Mikula, Pavol; Čapek, Jiří
- title: REAL STRUCTURE AND RESIDUAL STRESSES IN ADVANCED WELDS DETERMINED BY X-RAY AND NEUTRON DIFFRACTION
- date: 2017-07-28
- words: 2341
- flesch: 64
- summary: This would suggest that the rapid cooling of laser weld created non-equilibrium hard phases with higher strength [6]. Laser weld (according to the Fig. 4) has a higher tensile residual stresses along the weld, there- fore, redistribution after cutting the sample probably produced the greatest compressive stresses measured by XRD.
- keywords: acta; advanced; comparison; ctu; diffraction; direction; fig; figs; figure; fwhm; high; laser; line; local; mag; measured; measurements; methods; middle; neutron; neutron diffraction; proceedings; real; residual; sample; shrinkage; stresses; structure; surface; tensile; upper; weld; welding; xrd
- versions: original; plain text
- app01-4404
- author: Němeček, Jakub; Kolařík, Kamil; Čapek, Jiří; Ganev, Nikolaj
- title: INFLUENCE OF MACHINING TECHNOLOGIES ON VALUES OF RESIDUAL STRESSES OF OXIDE CUTTING CERAMICS
- date: 2017-07-28
- words: 2702
- flesch: 67
- summary: The values of residual compressive residual stresses increase steadily with increasing pressure in contrast to the samples after air abrasive machining. The influence of the parameters of machining to residual stresses was studied and the resulting values were compared with each other.
- keywords: abrasive; air; al2o3; ceramic; crkα; cutting; diamond; direction; direction rs; disc; fwhm; grinding; influence; laser; machining; materials; mnkα; mpa; parameters; pressure; residual; sample; sample σn; size; stresses; table; thermal; tic; values; σn[mpa
- versions: original; plain text
- app01-4437
- author: Brandejský, Tomáš; Fábera, Vít
- title: COMPARISON OF LANGUAGE SUBSET AND LANGUAGE EXTENSION BY SAFE RELATED INFORMATION APPROACH TO SAFE SYSTEM DEVELOPMENT
- date: 2017-08-28
- words: 3366
- flesch: 55
- summary: In the last chapters we discuss novel approaches based on application of programmable hardware which is described in VHDL language, which is also modification of ADA language. ADA language Origin of ADA language falls into falls into 80’s of previous century.
- keywords: acta; ada; c++; code; comparison; compiler; control; data; description; design; development; different; end; errors; example; extension; gnu; guidelines; hardware; language; list; misra; original; polytechnica; possible; proceedings; process; programmers; programming; rules; safety; sensitivity; signal; simulation; software; spark; standard; structures; subset; support; system; time; type; use; vhdl
- versions: original; plain text
- app01-4439
- author: Bret, Ondřej; Čížková, Petra
- title: DEVELOPMENT OF THE MUNICIPAL NOISE-ABSORBING SCREEN AND TEST SECTION CONSTRUCTION TECHNOLOGY
- date: 2017-08-28
- words: 3666
- flesch: 61
- summary: An atypically chamfered unit preventing the crash of tram units into the front of the screen in case of emergency (e.g. displacement of screen units due to vandalism) was mounted onto the front of the Munic- ipal noise-absorbing screen in the riding direction (i.e. in the direction from Pobřežní cesta Stop) (Figures 89). Immediately after the start of the lockout, the MHS two-way excavator made a groove in the ballast bed for the installation of MNAS units (Figure 5).
- keywords: acoustic; axis; company; conditions; construction; ctu; development; direction; distance; door; effectiveness; engineering; execution; figure; gauge; granulate; height; individual; installation; isbn; low; measures; mnas; modification; municipal; municipal noise; noise; opening; operation; placement; pptc; prague; proceedings; rail; railway; recycled; reduction; rubber; screen; section; segments; shape; snow; structure; t6a5; test; track; traffic; tram; units; vehicle; verification; wheel; width; čížková
- versions: original; plain text
- app01-4441
- author: Guziur, Petr
- title: FRICTION BUFFER STOP DESIGN
- date: 2017-08-28
- words: 2209
- flesch: 64
- summary: Friction buffer stops are the favoured construction of buffer stop, mainly due to its high resistance and variety of layout. This applies even for buffer stops – especially for buffer stops at the dead-end tracks in stations by platforms with pedestrians.
- keywords: additional; braking; buffer; calculation; coefficient; collision; deceleration; design; distance; end; energy; example; figure; force; friction; jaws; kinetic; km.h−1; mass; rate; safety; stop; train; work
- versions: original; plain text
- app01-4442
- author: Hlubuček, Adam
- title: RAILTOPOMODEL AND RAILML 3 IN OVERALL CONTEXT
- date: 2017-08-28
- words: 4132
- flesch: 49
- summary: Track alignment 19 Adam Hlubuček Acta Polytechnica CTU Proceedings In railML 2, the most of these parameters can be ex- pressed in two different ways: through infrastructure attribute groups (to be assigned to a certain track) or as track elements (changes within a track). Although the railway system is based on relatively similar principles across the whole Europe, there are many nationally specific details that should be ad- dressed in a coordinated manner in order to make the constantly evolving railML system universal enough to enable different software application to consistently communicate with each other.
- keywords: 3.0.is4; account; assets; automatic; cases; coordinates; data; different; elements; entities; entity; exchange; figure; format; geometry; infrastructure; instance; level; linear; location; means; needs; net; network; object; operational; order; parameters; particular; platform; positioning; possible; principles; railml; railtopomodel; railway; release; schema; scope; specific; systems; time; topology; track; train; uic; use; version
- versions: original; plain text
- app01-4445
- author: Kamenický, Dušan; Brandejský, Tomáš; Fábera, Vít; Gopak, Valerii
- title: RAILWAY TRAFFIC OPTIMIZATION
- date: 2017-08-28
- words: 2464
- flesch: 52
- summary: 3. Implementation in Railway Laboratory Railway Laboratory was founded at the Faculty of Transportation Sciences which serves as a place to simulate train traffic control and interlocking system. To increase capacity of railway traffic and effectivity by optimization of operative control, it means to solve several partial problems that are very difficult: pre- diction of train paths, conflicts detection and optimal solution of these conflicts.
- keywords: change; conflict; control; criterion; czech; description; different; direct; elements; format; information; infrastructure; laboratory; level; necessary; new; operation; operative; operator; optimization; path; railml; railway; route; running; sections; solution; stations; support; systems; time; timetable; track; traffic; train; xml
- versions: original; plain text
- app01-4449
- author: Leso, Martin
- title: ITS ON RAILWAY
- date: 2017-08-28
- words: 2346
- flesch: 46
- summary: In the area of intelligent transport systems can be seen similar trends as in the Czech Republic, ie. centralizing oper- ations management together with the strong support of information systems for traffic management, but at the European level is already increasingly applied in real operation automatic setting routes, including optimizing traffic management (ie. On this types of tracks, on the corridors main tracks to, it is possible to minimalize investment and services costs by choosing the strategy and type of control of the railway system based on minimalizing of parts of infrastructure technologies with reduction of signals and vehicle detection systems.
- keywords: attractiveness; concept; control; czech; data; efficiency; ertms; etcs; european; implementation; information; infrastructure; intelligent; level; main; management; necessary; new; operation; plan; railway; regional; republic; safety; services; systems; technologies; technology; track; traffic; train; transport; vehicles
- versions: original; plain text
- app01-4450
- author: Michl, Zdeněk; Drábek, Michal; Vávra, Rudolf
- title: NETGRAPH – AN EFFICIENT TOOL FOR PERIODIC TIMETABLING AND CAPACITY PLANNING
- date: 2017-08-28
- words: 3386
- flesch: 66
- summary: Line style can even show public transport lines operated without a fixed interval. Introduction A netgraph, also called interval graphic, is a graphi- cal representation of a periodic (interval) timetable concept of public transport lines in a designated geo- graphical or political territory, for a transport segment or a production unit.
- keywords: alternative; capacity; crossing; ctu; descriptors; direction; edge; figure; freight; hour; interval; line; minute; netgraph; network; nodes; notation; number; odd; opposite; paths; periodic; planning; public; railway; routing; rules; service; single; stations; stops; symmetry; timetable; timetabling; train; transport
- versions: original; plain text
- app01-4451
- author: Novák, Petr; Cempírek, Václav
- title: FACTORS INFLUENCING THE FEE FOR USE OF THE RAILWAY INFRASTRUCTURE
- date: 2017-08-28
- words: 2722
- flesch: 48
- summary: It is necessary to update the current system of levying charges for railway infrastructure to reflect the current market situation, to take into account the new transport strategy established by the European Union, and to reflect legislative changes in relation to Directive 2012/34/EU on creating a single European railway area. The existence of different opinions on the amount and way to charge fees for railway infrastructure have led the authors of this academic paper to create a plan for a system of charges to be derived from the current production factors as well as from a number of specific new factors used in countries neighboring the Czech Republic.
- keywords: account; area; basic; capacity; category; charges; charging; costs; current; czech; european; factor; freight; gross; individual; infrastructure; infrastructure capacity; journey; kilometers; passenger; price; railway; railway infrastructure; specific; system; tracks; train; transport; use; weight
- versions: original; plain text
- app01-4455
- author: Purkart, Pavel; Vodák, David; Hoření, Tomáš; Javořík, Tomáš
- title: POSSIBLE WAYS OF IMPROVING RAILWAY OPERATION AND INFRASTRUCTURE IN AREA BETWEEN DECÍN AND RUMBURK
- date: 2017-08-28
- words: 2987
- flesch: 58
- summary: Děčín – Bad Schandau – Dolní Poustevna – Šluknov – Rumburk, • railway line 084 Rumburk – Panský – Mikulášovice with bypass Panský – Krásná Lípa (– Rumburk), • railway line 086 in the section Benešov nad Ploučnicí – Česká Lípa, • railway line 089 Liberec – Zittau – Rybniště, • railway line Rumburk – Jiříkov – Ebersbach without regular passenger transport. There is a potential of 250 – 300 regular commuters in villages located only near railway lines (with acceptable walking dis- tance from village to railway line), this number is sufficient enough to take this into considera- tion.
- keywords: area; benešov; changes; commuting; conception; connections; dolní; děčín; important; infrastructure; jedlová; line; lípa; mikulášovice; minutes; nad; necessary; new; operation; panský; passenger; possible; prague; railway; regular; researched; rumburk; section; service; station; times; timetable; trains; transport; travel; česká; šluknov
- versions: original; plain text
- app01-4456
- author: Šrámek, Přemysl; Molková, Tatiana
- title: THE DETAILED PRIORITY OF INTERNATIONAL FREIGHT EXPRESSES IN THE OVERLAPPING SECTION OF RFC 7 AND RFC 9 KOLÍN – CHOCEŇ
- date: 2017-08-28
- words: 2208
- flesch: 61
- summary: There were solved conflicts of station tracks, freight trains were allowed to ride before their schedule time (in the case of free capacity) Conclusions It was checked in detail the relation between the im- portance of Fex trains and timetable stability.
- keywords: adi; adif; adil; adir; best; capacity; corridor; curve; czech; delay; fex; figure; freight; importance; international; kolín; lines; linking; min; passenger; priority; rail; relation; republic; rfc; section; simulation; stability; timetable; total; train; transport; value
- versions: original; plain text
- app01-4458
- author: Týfa, Lukáš; Vodák, David
- title: HIGH SPEED RAILWAY LINES – FUTURE PART OF CZECH RAILWAY NETWORK?
- date: 2017-08-28
- words: 4062
- flesch: 59
- summary: High speed railway lines include [2]: newly built lines for speeds up to 250 km/h, up- graded conventional lines for speeds of approximately 200 km/h and upgraded conventional lines with spe- cial attributes. The main advantages of this approach are: the possibility of bypassing sections where demand exceeds capac- ity on the conventional network, the speeding up of conventional trains and/or increasing the usage of high speed railway lines.
- keywords: case; connection; conventional; conventional network; conventional trains; costs; czech; daily; day; different; freight; high; high speed; higher; infrastructure; investment; line; longitudinal; lower; main; max; multiple; network; operational; parameters; praha; railway; railway line; railway network; slab; speed; speed railway; speed trains; study; system; table; time; track; traffic; trains; trainsets; transportation; types; units; use; variant
- versions: original; plain text
- app01-4460
- author: Valehrach, Jan; Říha, Tomáš; Dušek, Erik
- title: CANT EXCESS AND CANT DEFICIENCY EVALUATION IN RELATION TO TRAIN SPEED
- date: 2017-08-28
- words: 3261
- flesch: 65
- summary: Further research should focus on the long-term mon- itoring of train speeds in order to be able to calculate cant deficiency or cant excess more precise. When comparing the weighted cant excess or cant deficiency for train categories with the weighted value for all the trains according to Table 3 it could be stated, that at least for the rough estimate for the purposes of setting curves against each other is this value conclusive enough.
- keywords: acta; average; brno; categories; category; coaches; corrugation; curve; deficiency; evaluation; excess; freight; hereinafter; infrastructure; locations; locomotive; long; masses; measurements; passenger; pitch; polytechnica; proceedings; railway; range; records; results; speed; superstructure; table; track; train; values; vehicles; weighted
- versions: original; plain text
- app01-4462
- author: Vávra, Rudolf; Janoš, Vít
- title: ANALYSIS OF COMPETITIVENESS OF RAILWAY PASSANGER TRANSPORT BETWEEN RAKOVNÍK AND PRAGUE
- date: 2017-08-28
- words: 2688
- flesch: 57
- summary: Current Modal Split. • attendance of the reference point in Prague to the appropriate stop/station of transport mean i , or to the stop of Prague urban transport, • attendance from the bus station in Rakovník, or from the railway station Rakovník to the town cen- tre, • additional reserve of 5 min. Rakovník to Prague does have good bus connection, but due to the existence of the rail- way connection in this session, and the advantages of rail transport through the continuous passage of agglomeration areas should address the issue of the attractiveness of this mode of transport.
- keywords: achievable; analysis; bus; concept; connection; dost; figure; hours; interval; minutes; modal; mode; operational; passenger; phase; prague; praha; public; rail; railway; rakovník; split; time; timetable; trains; transport; travel; value; wčas
- versions: original; plain text
- app01-4464
- author: Vnenk, Petr; Culek, Bohumil
- title: MEASUREMENT METHODS OF INTERNAL STRESS IN CONTINUOUS WELDED RAIL
- date: 2017-08-28
- words: 4453
- flesch: 58
- summary: Vibration measurement of rail stress, 2006. The Calibrated length of rail method for measuring rail temperature stress.
- keywords: acta; application; axial; barkhausen; calibration; case; change; continuous; ctu; cwr; data; dependence; displacement; effect; force; internal; length; long; magnetic; magnetoelastic; measurement; mechanical; method; neutral; polarization; polytechnica; possible; procedure; proceedings; rail; rail stress; railway; rayleigh; research; results; section; sensors; shifting; steel; strain; stress; stress measurement; stresses; surface; temperature; tensile; thermal; time; university; use; verse; vibration; vortok; waves
- versions: original; plain text
- app01-4465
- author: Vukušičová, Daniela
- title: ANALYSIS OF DYNAMIC EFFECTS ACTING ON RAILWAY CROSSINGS
- date: 2017-08-28
- words: 3176
- flesch: 65
- summary: If we put into account all measurement campaigns on turnout no. 3, approxi- mately 24% of dynamic energy is transmitted to the bearer, while on turnout no. 4 it is about 35%. The paper is focused on measurement and analysis of dynamic effects on railway turnouts.
- keywords: 0150hz; acceleration; acta; analysis; area; axis; ballast; bearer; constructions; crossing; ctu; curve; domain; dynamic; effects; energy; evaluation; express; fastening; figure; frequency; impact; leo; measurement; measuring; method; nose; pendolino; proceedings; rail; railway; signal; time; transition; turnout; vibration; wheel; wing; wing rail
- versions: original; plain text
- app01-4492
- author: Kadlíček, Tomáš; Janda, Tomáš; Šejnoha, Michal
- title: CORRELATION RELATIONSHIPS FOR THE HYPOPLASTIC MODEL FOR FINE GRAINED SOILS
- date: 2017-10-15
- words: 2049
- flesch: 52
- summary: The second option assumes a calibration procedure in the form of tables or graphs enabling the determination of model parameters on the basis of specific input data. Apart from model parameters and the Atterberg limits Wl and Wp, the table also offers the percentage content of fine soil particles fwith the diameter d < 0.063mm.
- keywords: acta; available; basis; calibration; characteristics; content; correlation; ctu; distribution; fig; figure; fine; hypoplastic; index; model; model parameters; parameters; particles; polytechnica; proceedings; relationships; samples; size; soil; state; test; triaxial; values
- versions: original; plain text
- app01-4494
- author: Pruška, Jan
- title: MODELLING ROCK MASS IMPROVEMENT USING ROCK BOLTS
- date: 2017-10-15
- words: 2408
- flesch: 56
- summary: Ab rock bolt area, Aj discontinuity interface, τj shear stress at the discontinuity interface at failure, AT total area of the rock with rock bolts (Ab+Aj). Keywords: Rock bolts, modelling, FEM.
- keywords: anchor; area; behaviour; bolting; bolts; cohesion; czech; deformation; different; discontinuity; displacements; effect; element; fem; fig; finite; forces; grouting; internal; length; mass; material; matrix; methods; modelling; nodes; proceedings; rock; rock bolts; rock mass; rod; shear; stiffness; strength; underground; virtual
- versions: original; plain text
- app01-4497
- author: Súlovská, Monika; Turček, Peter; Štefunková, Zuzana
- title: TESTING OF SOIL IMPROVEMENT BELOW A HALL FLOOR
- date: 2017-10-15
- words: 2006
- flesch: 59
- summary: Effects of changes in soil moisture on the oedo- metric modulus are shown in Fig. In- creasing the soil stiffness (higher values of Eoed) was possible by observing a decreasing of soil moisture below 17 %.
- keywords: cement; characteristics; construction; content; deformation; effect; eoed; fig; hall; improved; improvement; kpa; laboratory; modulus; moisture; normal; oedometric; original; quality; samples; soil; stress; tested; testing; tests
- versions: original; plain text
- app01-4500
- author: Vaníček, Martin
- title: LANDSLIDE RECLAMATION IN ŠÁRKA VALLEY
- date: 2017-10-15
- words: 1548
- flesch: 61
- summary: The level difference between existing slope and reclaimed slope towards the planned staircase is proposed as reinforced steep slope (4:1) with MU- RALEX® Green system, which provides vegetated surface. Typical cross section through reclaimed slope is shown in Fig.
- keywords: acta; area; czech; development; facing; fig; figure; geogrids; ground; landslide; main; muralex; nails; polytechnica; proceedings; project; properties; reclamation; slope; soil; structure; surface; system; wall
- versions: original; plain text
- app01-4516
- author: Petkovšek, Ana; Maček, Matej; Smolar, Jasna
- title: TESTING METHODS FOR MECHANICALLY IMPROVED SOILS: RELIABILITY AND VALIDITY
- date: 2017-10-15
- words: 8065
- flesch: 63
- summary: Test fields Results of CPT tests.
- keywords: acta; app; area; brežice; calculated; carman; coal; compaction; conductivity; construction; content; control; cpt; ctu; density; depth; design; different; dike; dmt; dpsh; dynamic; earthquake; effective; efficiency; embankment; engineering; equation; experimental; field; figure; foundation; geotechnical; gravel; ground; higher; horizontal; hpp; hydraulic; impact; improvement; increase; influence; kozeny; laboratory; layer; left; liquefaction; material; maček; measured; methods; mixing; mixture; particles; polytechnica; potential; proceedings; properties; ratio; resistance; results; ric; right; roller; roller compaction; sand; sdmt; shear; silty; site; size; smolar; soil; stiffness; stress; surface; technique; temporary; test; test results; testing; trial; use; values; vertical; vol; water; σ′v
- versions: original; plain text
- app01-4517
- author: Ponomarev, Andrei B.; Kleveko, V.I.; Moiseeva, O.V.; Kashapova, K.R.
- title: FIBER REINFORCED SAND BACKFILL FOR UNDERGROUND PEDESTRIAN CROSSINGS
- date: 2017-10-15
- words: 1840
- flesch: 59
- summary: The diagram of shell displacements for fibre reinforced sand backfill (umax = 20.71 mm) Figure 10. Ordinary sand and sand reinforced with polypropylene fibres have been used as soil backfill.
- keywords: backfill; calculation; characteristics; construction; cost; crossing; deformation; diagram; fibre; figure; kleveko; metal; moment; mpa; pedestrian; results; sand; soil; state; strength; stress; tunnel; use
- versions: original; plain text
- app01-4518
- author: Ponomaryov, Andrey; Zakharov, Aleksandr
- title: TEMPERATURE OF SOIL MONITORED AT EXPERIMENTAL SITES IN PERM REGION (RUSSIA)
- date: 2017-10-15
- words: 1643
- flesch: 54
- summary: The paper presents the monitoring results for soil temperatures in the geological and climatic conditions of the city of Perm (Russia). The summarized moni- toring results (average monthly temperatures for the period from January 2009 to January 2016) are shown in Fig.
- keywords: acta; average; bank; city; conditions; depth; diagram; energy; experimental; fig; geological; ground; mass; monitoring; monthly; perm; results; site; soil; temperature; thickness; zakharov
- versions: original; plain text
- app01-4555
- author: Vaníček, Ivan
- title: STABILIZATION AND SPECIFICATION OF CHARACTERISTIC VALUE OF GEOTECHNICAL PARAMETERS
- date: 2017-10-15
- words: 2788
- flesch: 48
- summary: In the second case soil properties remain the same (on the previous values), as well the parameters of the reinforc- ing element (most often geosynthetics). 7. Conclusion The application of different additives for improvement of soil properties has growing tendency.
- keywords: additives; application; attention; case; cement; characteristic; compaction; content; czech; design; earth; effect; engineering; fill; geotechnical; ground; impact; improvement; increase; lime; limit; parameters; proceedings; properties; soil; specification; stabilization; strength; structures; term; tests; time; values; vaníček; view
- versions: original; plain text
- app01-4618
- author: Bošanský, Michal; Patzák, Bořek
- title: PARALLEL APPROACH TO SOLVE OF THE DIRECT SOLUTION OF LARGE SPARSE SYSTEMS OF LINEAR EQUATIONS
- date: 2017-11-13
- words: 2679
- flesch: 53
- summary: Initialization of data structures for distributed matrix This phase should determine the required size of ar- rays used to store all nonzero entries of the global matrix. The global vector is again distributed among partitions, the distribution corresponds to the distribution of matrix rows.
- keywords: assembly; block; communication; compressed; computing; contributions; corresponding; data; distributed; element; entries; equations; global; individual; large; linear; local; matrix; memory; nodes; nonzero; number; parallel; partitions; problem; processing; row; rows; shared; solution; sparse; stiffness; structure; superlu; system
- versions: original; plain text
- app01-4619
- author: Čada, Petr; Máca, Jiří
- title: COMPARISON OF METHODS USED FOR SEISMIC ANALYSIS OF STRUCTURES
- date: 2017-11-13
- words: 4349
- flesch: 62
- summary: Keywords: seismic response, lateral force method, response spectrum, time-history analysis, pushover analysis. Non-linear methods according to EC8 [1] are the time-history analysis and the pushover analysis.
- keywords: accelerogram; analysis; beams; behaviour; calculated; calculations; comparison; cross; curve; design; displacement; earthquake; eigenmodes; factor; figure; flexible; force; frame; hand; history; horizontal; lateral; linear; load; material; method; modal; necessary; non; plastic; proceedings; programm; pushover; response; results; rigid; sdof; second; seismic; software; spectrum; structure; system; time
- versions: original; plain text
- app01-4623
- author: Ďureje, Jakub; Prošek, Zdeněk
- title: FOAMED CEMENT COMPOSITES: DETECTION OF THE MODULUS OF ELASTICITY USING DIC ANALYSIS AND COMPARISON WITH OTHER METHODS
- date: 2017-11-13
- words: 2322
- flesch: 57
- summary: Half of cement paste beams were tested according to CSN EN 12390-3 Test of hardened concrete - Part 3: Compressive strength of test samples [9]. 7. Results and discussions Samples Ref C and Ref R were references.
- keywords: acta; analysis; correlation; ctu; czech; deformation; dic; displacement; dynamic; elasticity; field; figure; foamed; hydraulic; image; laboratory; loading; measurement; measuring; method; modulus; paste; pattern; polytechnica; prague; press; proceedings; results; samples; software; static; technical; test; university
- versions: original; plain text
- app01-4624
- author: Dvořáková, Edita; Patzák, Bořek
- title: ON DEVELOPMENT OF THE INTERACTIVE DESIGN TOOL BASED ON ISOGEOMETRIC ANALYSIS
- date: 2017-11-13
- words: 2348
- flesch: 57
- summary: Several lock- ing removal techniques have been proposed to unlock isogeometric beam element including reduced inte- gration, B̄-method, DSG method, see [2, 3] for the references. Isogeometric analysis is a new concept of Finite element method which has been proposed to bridge the gap between the CAD systems and the FEM solvers.
- keywords: acta; analysis; approach; basis; beam; cad; control; curved; data; design; developed; element; fem; figure; finite; formulation; functions; geometry; grasshopper; iga; interactive; isogeometric; locking; matrix; method; model; nurbs; oofem; points; polytechnica; results; rhino; shear; splines; strain; system; tool; use
- versions: original; plain text
- app01-4627
- author: Hlůžek, Radim; Prošek, Zdeněk; Trejbal, Jan; Fládr, Josef; Potocký, Štepán
- title: PLASMA TREATMENT IMPACT ON PHYSICAL AND CHEMICAL PROPERTIES OF POLYMERIC FIBERS
- date: 2017-11-13
- words: 2467
- flesch: 56
- summary: An industrial water flush- able sizing is standardly applied onto fiber surfaces as an integral part of their production. An effect on physico-chemical changes on fiber surfaces was examined by wettability measurement, wight loss ratio (fibers were weighed before and after plasma treatment) and finally by fiber tensile strength tests, when the main focus of the re- search was targeted to impact of plasma treatment on fiber mechanical performance.
- keywords: adhesion; angle; approx; changes; chemical; contact; czech; duration; fibers; figure; loss; macro; materials; matrix; measurement; mechanical; modification; oxygen; pet; physical; plasma; polymeric; prague; proceedings; properties; reinforcement; seconds; strength; surface; tensile; time; treatment; trejbal; university; water; weight; wettability
- versions: original; plain text
- app01-4628
- author: Hrbek, Vladimír; Koudelková, Veronika; Prošek, Zdeněk; Tesárek, Pavel
- title: MICRO-MECHANICAL PERFORMANCE OF CONCRETE USED AS RECYCLED RAW MATERIAL IN CEMENTITIOUS COMPOSITE
- date: 2017-11-13
- words: 3574
- flesch: 49
- summary: Micrographs with identified material phases. scanned in BSE mode with high resolution (5×5 se- quence of 250 µm wide images). Quasi-static nano-indentation The technique of nano-indentation (Ti 7500 series, Hysitron Inc.) was selected for evaluation of mi- croscale elastic properties of the material.
- keywords: acta; aggregate; analysis; area; bse; calcium; cement; clinker; concrete; ctu; czech; depth; doi; elastic; electron; engineering; fig; figure; fine; gpa; grid; high; https://doi.org/10.1016; hydrated; indentation; investigation; journal; level; main; material; mechanical; micro; micrographs; micromechanical; microscopy; modulus; nanoindentation; phases; polytechnica; powder; prague; proceedings; properties; railway; raw; recycled; reduced; research; results; scale; sem; sleepers; study; surface; technique; waste
- versions: original; plain text
- app01-4631
- author: Kucíková, Lucie; Hrbek, Vladimír; Vorel, Jan; Šejnoha, Michal
- title: USING HOMOGENIZATION AND NANOINDENTATION FOR MICROFIBRIL ANGLE DETERMINATION OF SPRUCE
- date: 2017-11-13
- words: 2880
- flesch: 54
- summary: Ultrastructure and formation of wood cell wall. The significance of the elastic modulus of wood cell walls obtained from nanoindentation measurements.
- keywords: angle; approach; case; cell; cell wall; data; earlywood; elastic; evaluation; figure; final; homogenization; latewood; layer; load; longitudinal; material; matrix; measured; measurement; mechanical; method; mfa; microfibril; micromechanical; modulus; nanoindentation; paper; phases; properties; results; spruce; step; surface; table; values; variant; wall; wood
- versions: original; plain text
- app01-4632
- author: Maroušková, Aneta; Kubát, Jan
- title: SOLID BURNT BRICKS’ TENSILE STRENGTH
- date: 2017-11-13
- words: 1529
- flesch: 61
- summary: The expected tensile of bricks strength was approx. The obtained working diagrams will be further use for a detailed numerical analysis of whole brick masonry column under concentric compressive load.
- keywords: bricks; diagrams; experimental; failure; figure; force; initial; masonry; modulus; mortar; num; plates; pure; results; specimens; steel; strength; tensile; tension; testing; working; young
- versions: original; plain text
- app01-4634
- author: Mikeš, Karel; Jirásek, Milan
- title: ADAPTIVE QUASICONTINUUM SIMULATION OF ELASTIC-BRITTLE DISORDERED LATTICES
- date: 2017-11-13
- words: 3582
- flesch: 54
- summary: Force-displacement diagrams computed with exact particle approach A0 (black) and with QC approach with local anisotropic homogenization A3 (red). QC approach with interpolation In this approach, only the interpolation rule is used to simplify the full particle model.
- keywords: adaptive; algorithm; approach; area; crack; dofs; elastic; elements; exact; high; high interest; homogenization; interest; interpolation; lattices; links; local; low; material; mesh; method; model; new; number; particles; quasicontinuum; regions; repnodes; simplified; simulation; step; stiffness; update; ↑ ↑
- versions: original; plain text
- app01-4635
- author: Mužíková, Barbora; Otcovská, Tereza; Padevět, Pavel
- title: WATER ABSORPTION CAPACITY COEFFICIENT AND MASS MOISTURE OF RAMMED EARTH MATERIAL
- date: 2017-11-13
- words: 2153
- flesch: 65
- summary: This article presents the development of mass moisture of rammed earth material and determines the water absorption capacity coefficient for rammed earth with illite-kaoline clay. Introduction This article presents earth material as a modern build- ing material based on the long history of using, but in last centuries it was replaced by modern mate- rials.
- keywords: absorption; agl; building; capacity; clay; coefficient; common; ctu; development; earth; figure; gem; illite; kaoline; loam; mass; material; moisture; prescriptions; rammed; rammed earth; specimens; table; water; weight
- versions: original; plain text
- app01-4636
- author: Otcovská, Tereza; Mužíková, Barbora; Padevět, Pavel
- title: DRYING CHARACTERISTIC OF RAMMED EARTH WITH ILLITIC-KAOLINITIC CLAY CONTENT
- date: 2017-11-13
- words: 2046
- flesch: 67
- summary: It was presupposed that amount of used clay in clay mixture has major influence on the speed of drying and a final equilibrium moisture content. And water serves for activation of bonding properties of the clay and for proper processibility of clay mixture [1, 13–15].
- keywords: acta; agent; bodies; bonding; building; clay; coefficient; construction; content; course; drying; earth; equilibrium; figure; humidity; kriii; load; manufacture; material; mixture; moisture; polytechnica; rammed; ratio; sand; set; speed; table; test; testing; time; unburned; water; weight
- versions: original; plain text
- app01-4637
- author: Prošek, Zdeněk; Topič, Jaroslav
- title: LONG-TIME INVESTIGATION OF CEMENT COMPOSITE MATERIAL WITH MICRONIZED WASTE MARBLE POWDER: DYNAMIC MODULES
- date: 2017-11-13
- words: 2197
- flesch: 59
- summary: The resulting output is waste marble powder (WMP) and it has better mechanical properties than marble sludge [14]. Conclusions This work is focused on the mechanical properties of the cement composites composed of Portland cement and different amounts of waste marble powder.
- keywords: cement; concrete; construction; czech; days; dynamic; effect; elasticity; experimental; figure; marble; materials; mechanical; method; micronized; modulus; old; powder; properties; prošek; recycled; samples; shear; sludge; time; topič; vol; waste; wmp
- versions: original; plain text
- app01-4638
- author: Řehounek, Luboš; Denk, František; Jíra, Aleš
- title: GEOMETRICAL OPTIMIZATION OF DENTAL IMPLANTS WITH REGARD TO OSSEOINTEGRATION
- date: 2017-11-13
- words: 2311
- flesch: 54
- summary: © Czech Technical University in Prague, 2017 available online at http://ojs.cvut.cz/ojs/index.php/app GEOMETRICAL OPTIMIZATION OF DENTAL IMPLANTS WITH REGARD TO OSSEOINTEGRATION The variant 0001C (cylindrical part 3.00 mm) has a maximum value of σeqv,max = 73.6 MPa, but the sys- tem of vertical ribs is situated now only in cancellous bone. 99 L. Řehounek, F. Denk, A. Jíra Acta Polytechnica CTU Proceedings Implant type osseointegrated in bone tissue of mandible Displacement of the implant and bone tissue Equivalent von-Mises stress Optimization influence
- keywords: 0001b; analysis; bone; cylindrical; dental; fig; figure; geometrical; human; implant; left; mandible; mechanical; middle; model; mpa; numerical; optimization; osseointegration; reference; right; simulations; stem; stress; structure; trabecular; upper; variant; width; σeqv
- versions: original; plain text
- app01-4642
- author: Schmidt, Jaroslav; Zemanová, Alena; Janda, Tomáš; Zeman, Jan; Šejnoha, Michal
- title: VARIATIONALLY-BASED EFFECTIVE DYNAMIC THICKNESS FOR LAMINATED GLASS BEAMS
- date: 2017-11-13
- words: 3668
- flesch: 63
- summary: This contribution addresses such simplified models for free vibrations of laminated glass beams, with the goal to determine their natural frequencies and modal damping properties. To our best knowledge, only one effective thickness approach for modal analysis of laminated glass beams can be found in literature.
- keywords: analysis; approach; beam; boundary; complex; conditions; damping; det; det eet; dynamic; eet; effective; effective thickness; eigenvalue; engineering; enhanced; error; factors; free; frequencies; frequency; glass; interlayer; laminated; layers; loss; method; modal; mode; modulus; natural; properties; reference; rm det; section; shape; shear; structures; table; thickness; use
- versions: original; plain text
- app01-4644
- author: Šmídová, Eliška; Kabele, Petr
- title: COMPARISON OF FAILURE CRITERIA FOR WOOD IN TENSILE-SHEAR STRESS STATE
- date: 2017-11-13
- words: 3628
- flesch: 66
- summary: The off-axis test has become a widely used experi- ment for validation of failure criteria of non-isotropic materials. The off-axis tensile test has been involved in numerous studies, especially in those related to the complex problem of determining shear strength of wood [6–10] or the applicability of failure criteria for a specific wood species [11, 12].
- keywords: avg; avg'cov; axis; criteria; criterion; curves; data; douglas; experimental; f s; failure; figure; fir; formula; grain; hankinson; hill; hyperbolic; katsura; laminated; lourenco; materials; modified; p s; results; shear; sitka; specimens; spruce; strength; stress; tensile; test; tsai; uncalibrated; upper; veneer; wood
- versions: original; plain text
- app01-4646
- author: Šulc, Stanislav; Šmilauer, Vít; Wald, František
- title: COUPLED SIMULATION FOR FIRE-EXPOSED STRUCTURES USING CFD AND THERMO-MECHANICAL MODELS
- date: 2017-11-13
- words: 1732
- flesch: 62
- summary: Temperature field from FDS was validated previ- OOFEM mesh of both thermal and me- chanical task.
- keywords: analysis; beam; computational; czech; dynamics; fds; field; figure; fire; furnace; mechanical; meshes; model; mupif; oofem; prague; steel; surface; task; temperature; thermal; thermo; time; transfer
- versions: original; plain text
- app01-4648
- author: Topič, Jaroslav; Prošek, Zdeněk
- title: HYDRATION PROCESS AND MECHANICAL PROPERTIES OF CEMENT PASTE WITH RECYCLED CONCRETE POWDER AND SILICA SAND POWDER
- date: 2017-11-13
- words: 2651
- flesch: 62
- summary: However lower density of old cement paste in RCP overweight the mentioned potential of RCP and mechanical properties are decreasing compared with reference cement paste and cement paste SSP. Remaining question is if non-hydrated cement grains in old cement paste can exposed on this level and still fulfills the role of partial binder replacement.
- keywords: area; building; bulk; cem+rcp; cem+ssp6; cement; concrete; construction; density; flow; heat; hydration; influence; lower; materials; mechanical; micro; mixture; old; particles; paste; powder; process; properties; rcp; recycled; results; samples; sand; silica; ssp; st2; st6
- versions: original; plain text
- app01-4650
- author: Antoš, Jakub; Dejdar, Lukáš; Trejbal, Jan; Prošek, Zdeněk
- title: PERFORMANCE OF CEMENT COMPOSITES REINFORCED WITH SURFACE-MODIFIED POLYPROPYLENE MICRO- AND MACRO-FIBERS
- date: 2017-11-13
- words: 2913
- flesch: 53
- summary: Based on these findings, it can be pointed out, that polymer fiber modification via plasma treatment can be assumed as low-cost and very effective method to increase inter-phase interaction and mechanical properties of fiber reinforced cement composites. On the other hand, due to low chemical activity of most polymers (related to cement paste), the chemi- cal interaction (bonding) between fiber surfaces and cement matrix is not ensured.
- keywords: behavior; bending; cement; chemical; composite; concrete; crack; cracking; czech; dic; digital; displacement; doi; equal; fibers; figure; image; increase; interaction; low; materials; matrix; mechanical; micro; modified; paste; phase; plasma; point; polymeric; polypropylene; properties; reference; reinforcement; research; samples; specimens; surface; test; toughness; treatment; types
- versions: original; plain text
- app01-4651
- author: Tyburec, Marek; Zeman, Jan
- title: OPTIMIZATION-BASED APPROACH TO TILING OF FINITE AREAS WITH ARBITRARY SETS OF WANG TILES
- date: 2017-11-13
- words: 5213
- flesch: 71
- summary: As the problem is undecidable, no general algorithm exists, and thus all the algorithms need to exploit the spe- cific structure of each individual (family of) tile sets. Our implementation lacks heuristics, parallelism, and generation of cuts, consequently being inefficient for tile sets with large number of degrees of freedom, such as the Čulík one.
- keywords: algorithm; aperiodic; approach; areas; binary; boundary; branch; colored; colors; conditions; convex; ctu; design; developed; domino; edge; generation; infinite; integer; k[nk; k∈t; k∈t xi; linear; method; non; number; optimization; plane; position; problem; proceedings; programming; rel; relaxation; semidefinite; set; sets; solution; tile k; tiles; tiling; variables; wang; wang tiles; ∈h,∀j
- versions: original; plain text
- app01-4653
- author: Valentová, Soňa; Hrbek, Vladimír; Šejnoha, Michal
- title: EVALUATION OF EFFECTIVE PROPERTIES OF BASALT TEXTILE REINFORCED CERAMIC MATRIX COMPOSITES
- date: 2017-11-13
- words: 3116
- flesch: 56
- summary: 2. Experimental Measurements of the Material Parameters A specimen of basalt fiber ceramic composite was embedded into an epoxy resin and left for 24 hours to harden in a cylindrical mold (25 mm in diameter). Mechanical properties of basalt fiber reinforced composites prepared by partial pyrolysis of a polymer precursor.
- keywords: analysis; applied; attention; average; basalt; ceramic; composite; computational; corresponding; damage; direction; effective; elastic; equivalent; evolution; fiber; fig; figs; figure; gpa; homogenization; indentation; individual; level; longitudinal; macroscopic; material; matrix; measurements; method; model; modulus; parameter; phases; point; properties; sepuc-1; strain; strength; stress; tensile; textile; transverse; yarn
- versions: original; plain text
- app01-4655
- author: Venglar, Michal; Sokol, Milan; Marfoldi, Monika
- title: MODAL ANALYSIS FOR REVISION OF A FEM MODEL OF A STEEL TRUSS BEAM
- date: 2017-11-13
- words: 1654
- flesch: 54
- summary: Keywords: Modal analysis, revision of FEM model, experimental measurements, rivet joint connection. [5] J. Li, H. Hao. Health monitoring of joint conditions in steel truss bridges with relative displacement sensors.
- keywords: analysis; beam; boundary; bridge; calculated; conditions; cross; experimental; fem; figure; frequencies; local; mass; measured; measurements; model; natural; numerical; outcomes; research; revision; section; shape; specimen; steel; truss
- versions: original; plain text
- app01-4656
- author: Verner, Martin
- title: THE OCCURRENCE OF SYNCHRONIZED JUMPING CROWD AT SPORTS STADIUMS
- date: 2017-11-13
- words: 1704
- flesch: 65
- summary: These types of fans behaviours caused the maximal vibration of the grandstand. An experiment focused on fans behaviour and induced grandstand vibrations during a football match.
- keywords: behaviour; crowd; czech; eden; experiment; fans; figure; football; grandstands; hockey; ice; jumping; occurrence; pilsen; prague; praha; stadium; synchronized; table; team; types
- versions: original; plain text
- app01-4658
- author: Zobal, Ondřej; Jára, Robert; Hataj, Martin
- title: METHODOLOGY FOR MEASURING THE SHEAR STRESS OF PLASTERBOARDS
- date: 2017-11-13
- words: 1908
- flesch: 60
- summary: Keywords: Plasterboard, shear strength perpendicular to the plane of the board, EN 789, ASTM D5379. Static scheme of the test of shear strength perpendicular to the plane of the board [6]. Figure 2.
- keywords: astm; board; d5379; direction; elasticity; gypsum; longitudinal; modulus; perpendicular; plane; plasterboard; properties; shear; shear strength; specimen; standard; strength; strength perpendicular; test; transverse; type
- versions: original; plain text
- app01-4660
- author: Zrůbek, Lukáš; Kučerová, Anna; Doškář, Martin
- title: WANG TILES LOCAL TILINGS CREATED BY MERGING EDGE-COMPATIBLE FINITE ELEMENT MESHES
- date: 2017-11-13
- words: 2711
- flesch: 59
- summary: Wang Tiles Method The basic principle of Wang tiles method was intro- duced by Mr. Hao Wang Keywords: Heterogeneous microstructures, Wang tiles, micro-mechanical fields, local tiling, finite element method.
- keywords: algorithm; cell; compatible; cshd; edge; element; engineering; fields; figure; finite; heterogeneous; kučerová; local; materials; mechanical; meshes; method; micro; microstructure; modelling; periodic; position; process; puc; quantities; results; scale; set; statistical; stochastic; tiles; tiling; unit; wang
- versions: original; plain text
- app01-4838
- author: Czakoj, Tomas; Frybort, Jan; Lovecky, Martin
- title: CALCULATION UNCERTAINTIES IN SPENT FUEL INVENTORY DETERMINATION
- date: 2018-05-17
- words: 4145
- flesch: 57
- summary: Al- though fuel temperature change seems to be much low important than the previously mentioned, it is impor- tant to remember that fuel temperature changes are much high than the moderator temperature changes. The impact of fuel radius change is negligible, which is probably caused by modification of fuel density made with the objective of preserva- tion of fuel content.
- keywords: absorber; absorption; assembly; boron; burnable; calculated; calculation; change; cladding; comparison; composition; content; data; days; depletion; determination; determined; effect; enrichment; experimental; factor; figure; fuel; gadolinium; gd-2m+; higher; important; influence; inventory; isotopes; istc; model; moderator; modification; multiplication; nuclear; nuclides; operational; power; radius; results; sequence; shows; table; temperature; time; triton; uncertainties; uncertainty; uranium
- versions: original; plain text
- app01-4843
- author: Osusky, Filip; Cerba, Stefan; Luley, Jakub; Vrban, Branislav; Hascik, Jan
- title: COUPLED SIMULATION OF GAS COOLED FAST REACTOR FUEL ASSEMBLY WITH NESTLE CODE SYSTEM
- date: 2018-05-17
- words: 3982
- flesch: 58
- summary: The processing of fuel assembly homogeneous parametric cross-section library for NESTLE code simulation is made by the sequence TRITON of SCALE code package system. NESTLE code 2.1.
- keywords: assembly; axial; boundary; calculated; calculation; case; cfd; code; code system; condition; coolant; core; cross; direction; distribution; energy; fast; fig; figure; flux; fuel; fuel assembly; gas; gfr; hydraulic; installation; library; macroscopic; material; nestle; nestle calculation; nestle code; neutron; nuclear; power; process; reactor; reference; results; scale; section; sectional; sequence; simulation; study; system; table; temperature; thermal; triton; validation; version
- versions: original; plain text
- app01-4844
- author: Campolina, Daniel; Frybort, Jan
- title: UNCERTAINTY PROPAGATION FOR LWR BURNUP BENCHMARK USING SAMPLING BASED CODE SCALE/SAMPLER
- date: 2018-05-17
- words: 3514
- flesch: 50
- summary: Results showed that the influence of input uncertainties on kinf is more pronounced in the fresh core other than the depleted core and the contribution from studied manufacturing uncertainties is smaller than the contribution of nuclear data uncertainties. Uncertainty analysis from nuclear data In this section, cross-section perturbation using SCALE/SAMPLER is performed for a benchmark proposed by the OECD expert group Uncertainty Analysis in Modeling (UAM)
- keywords: analysis; average; benchmark; burnup; calculated; calculations; case; cell; cladding; covariance; cross; data; density; depletion; deviation; difference; doi; energy; exercise; factor; figure; final; fresh; fuel; fuel_radius; group; gwd; input; kinf; libraries; library; model; mtu; multiplication; neutron; nuclear; order; parameters; perturbation; propagation; radius; reference; relative; results; sampler; sampling; scale; section; standard; study; uam; uncertainties; uncertainty; value; variable
- versions: original; plain text
- app01-4846
- author: Šísl, Václav; Ševeček, Martin
- title: IMITATING NEUTRON IRRADIATION DAMAGE USING A COMBINATION OF ION BEAMS
- date: 2018-05-17
- words: 4291
- flesch: 51
- summary: The goal of cur- rent research is to achieve as comparable irradiation damage profile as possible resulting in imitation of irradiation damage by heavy ions. When using ions or protons imitating irradiation damage inside LWR reactors, the temperature of the target should be increased by 15–40 ◦C compared to the temperature in reactor.
- keywords: algorithm; beams; case; cladding; coating; combination; damage; defects; depth; development; differences; distribution; dpa; effects; energy; figure; fitness; fuel; heavy; individual; ion irradiation; ions; irradiation; layer; materials; method; methodology; mev; multiple; neutron; new; nuclear; optimization; population; process; profile; reactor; research; set; standard; target; temperature; ti2alc; time; value
- versions: original; plain text
- app01-4848
- author: Foreword, Editorial,
- title: ŠIMÁNĚ 2017
- date: 2018-05-17
- words: 558
- flesch: 44
- summary: nyvltseb@fjfi.cvut.cz Daniel Campolina ČVUT FJFI Filip Osuský STU FEI campolina@cdtn.br filip.osusky@stuba.sk Lucie Celbová ČVUT FJFI/KIPL Pavel Suk ČVUT FJFI celboluc@fjfi.cvut.cz sukpave2@fjfi.cvut.cz Martin Cesnek ČVUT FJFI Jakub Svoboda ČVUT FJFI martin.cesnek@fjfi.cvut.cz svoboj68@fjfi.cvut.cz Tomáš Czakoj ČVUT FJFI Martin Ševeček ČVUT FJFI tomas.czakoj@gmail.com martin.sevecek@fjfi.cvut.cz Michal Farník ČVUT FJFI/KF Václav Šísl ČVUT FJFI farnimi1@fjfi.cvut.cz sislvacl@fjfi.cvut.cz Filip Fejt ČVUT FJFI/ Tomáš Matlocha ČVUT FJFI Pavel.Bartl@fjfi.cvut.cz matlocha@ujf.cas.cz Ivana Bonková UK Ba Ondřej Novák ČVUT FJFI ivana.bonkova@gmail.com
- keywords: cesnek; committee; conference; ctu; czech; engineering; fjfi; martin; milan; nuclear; organizing; prague; research; science; student; čvut; ševeček; šimáně; štefánik
- versions: original; plain text
- app01-4947
- author: Černoch, Petr; Košťál, Jiří
- title: PREDICTION OF THE DEVELOPMENT OF GROUNDWATER QUALITY IN A FINISHED SLUDGE LAGOON
- date: 2018-06-19
- words: 3691
- flesch: 45
- summary: This concerns mainly a rise in groundwater level due to superimposed load on the structure Keywords: Transport of contaminants, sludge bed, geotechnical risks.
- keywords: area; ash; bed; beds; boundary; calculated; calculation; coal; conditions; contaminants; course; data; depositing; development; energy; flow; geological; groundwater; groundwater level; groundwater quality; implemented; indicators; interest; košťál; lagoon; level; mixture; model; modelling; monitored; monitoring; numerical; parameters; partial; prediction; proceedings; product; quality; secondary; slag; sludge; sludge bed; sluicing; solved; stabilised; state; structure; surface; time; transport; values; verification; černoch
- versions: original; plain text
- app01-4949
- author: Chalmovský, Juraj; Míča, Lumír
- title: THE LOAD-DISPLACEMENT BEHAVIOUR OF GROUND ANCHORS IN FINE GRAINED SOILS
- date: 2018-06-19
- words: 3514
- flesch: 61
- summary: Based on regression analysis of anchor loading tests performed mainly in London clay and glacial clay, Barley Non-uniform shear stress distribution along the anchor fixed length
- keywords: analysis; anchor; bearing; behaviour; capacity; chalmovský; critical; curves; different; displacement; distributions; element; failure; figure; finite; fixed; force; friction; ground; grout; hsof; investigation; kpa; lcalc; length; load; loading; measured; method; mlsm; model; non; numerical; parameters; peak; point; pre; proceedings; progressive; ratio; shear; skin; softening; soil; standard; stiff; strain; strength; stress; stressing; test; transfer; value
- versions: original; plain text
- app01-4950
- author: Hruštinec, Luboš
- title: ANALYSIS OF THE TIME COURSE OF A BRIDGE ABUTMENTS SETTLEMENT
- date: 2018-06-19
- words: 3321
- flesch: 58
- summary: Over 6 years of geotechnical monitoring after the construction of bridge abutments Keywords: Bridge abutment, geotechnical calculations, settlement, consolidation.
- keywords: abutments; backfill; bridge; bridge abutments; bridge structure; calculated; calculations; causes; clay; comparison; consolidation; course; deformation; depth; embankment; evaluation; figure; final; firm; geotechnical; geotechnical calculations; load; measured; plasticity; results; settlement; soils; structure; subsoil; supports; table; time; total; values
- versions: original; plain text
- app01-4953
- author: Vaníček, Martin
- title: SOIL REINFORCEMENT AND EC7 (202x)
- date: 2018-06-19
- words: 2063
- flesch: 58
- summary: In reinforcing element Total strain (elongation) X X X X X Creep strain (post construction) X X X X X In facing element Differential settlement along the facing due to subsoil deformation X NOTES: X1 - rarely used X2 - Anchors + RVBEs are not considered as soil reinforcements in current Standards but are shown as an aide memoire for hybrid structures Figure 1. X X X X X
- keywords: clauses; comments; current; design; development; different; ec7; elements; end; eurocode; facing; generation; geotechnical; ground; group; limit; nails; project; reinforcement; second; soil; states; steel; strength; structures; team; text
- versions: original; plain text
- app01-4959
- author: Němeček, Jakub; Čapek, Jiří; Ganev, Nikolaj; Kolařík, Kamil
- title: INVESTIGATION OF SURFACE MACROSCOPIC RESIDUAL STRESSES OF CUTTING CERAMICS AFTER MECHANICAL MACHINING
- date: 2018-06-26
- words: 1995
- flesch: 53
- summary: An accuracy of determination of position 2Θ is about 8, 5× smaller than for diffraction lines with higher angles 2Θ. However, the relative dependence for determining the effect of mechanical machining on surface residual stresses is indicative. Therefore, the influence of mechanical machining technologies on the values of macroscopic residual stresses was investigated by X-ray diffraction.
- keywords: aat; abrasive; air; al2o3; ceramics; compressive; cutting; diamond; diffraction; direction; disc; figure; grinding; hexagonal; increase; machining; macroscopic; materials; ray; residual; residual stresses; samples; sic; stresses; structure; surface; time; values; zro2
- versions: original; plain text
- app01-4964
- author: Vertat, Petr; Drahokoupil, Jan
- title: FITEXC – DIFFRACTION PROFILE FITTING PROGRAM RUN IN MS EXCEL
- date: 2018-06-26
- words: 1739
- flesch: 57
- summary: We present our custom made diffraction fitting program FitExc for the basic treatment of the 1D diffraction profiles, in particular, the Intensity(2θ) of X-ray, synchrotron or neutron diffraction measurements. Keywords: X–ray diffraction, diffraction profile fitting, MS Excel.
- keywords: acta; applications; basic; ctu; czech; data; department; determination; diffraction; doi; excel; figure; fitexc; fitting; functions; intensity; interface; lattice; multiple; parameters; peaks; prague; precise; processing; profile; program; ray; republic; run; user; worksheet
- versions: original; plain text
- app01-5079
- author: Rada, Václav; Fíla, Tomáš; Zlámal, Petr; Kytýř, Daniel; Koudelka, Petr
- title: MULTI-CHANNEL CONTROL SYSTEM FOR IN-SITU LABORATORY LOADING DEVICES
- date: 2018-10-23
- words: 2691
- flesch: 52
- summary: All the pipes leading from control software core are connected to GUI core, which handles communi- cation between control software core and GUI process itself. Each experimental device uses its specific LinuxCNC initializing file, which contains data needed for control software startup.
- keywords: = ␣; acta; analog; applications; axes; control; controlling; core; ctu; czech; data; devices; etc; figure; file; gui; initializing; interface; labjack; laboratory; linuxcnc; loading; measurement; multiprocessing; performance; pipes; plugin; polytechnica; proceedings; processes; programming; python; sensors; software; source; specific; stat; system; user; ␣ =; ␣ mm; ␣ x
- versions: original; plain text
- app01-5080
- author: Kytýř, Daniel; Fíla, Tomáš; Koudelka, Petr; Kumpová, Ivana; Vopálenský, Michal; Vavro, Leona; Vavro, Martin
- title: INSTRUMENTATION OF FOUR-POINT BENDING TEST DURING 4D COMPUTED TOMOGRAPHY
- date: 2018-10-23
- words: 2578
- flesch: 47
- summary: In case of bending tests, our background research showed that no commercial solution allowing for reliable investigation of so called fracture process zone in quasi-brittle materials is currently available. Thus, this paper is focused on description of recently developed in-situ four-point bending loading device and its instrumentation for testing of quasi-brittle materials.
- keywords: acta; analysis; area; axis; bending; brittle; concept; crack; czech; damage; deformation; detectors; development; device; doi:10.1016; experimental; fig; flat; fpz; fracture; high; image; imaging; instrumentation; loading; materials; methods; micro; point; polytechnica; procedure; proceedings; processes; propagation; quasi; ray; resolution; sample; scanner; supports; test; tomography; zone
- versions: original; plain text
- app01-5082
- author: Doktor, Tomáš; Kumpová, Ivana; Wroński, Sebastian; Śniechowski, Maciej; Tarasiuk, Jacek; Forte, Giancarlo; Kytýř, Daniel
- title: INFLUENCE OF PRINTING AND LOADING DIRECTION ON MECHANICAL RESPONSE IN 3D PRINTED MODELS OF HUMAN TRABECULAR BONE
- date: 2018-10-23
- words: 2054
- flesch: 54
- summary: Mechanical response was compared in nine different combinations of direction of 3D printing and loading direction. Trabecular bone sample resected from human caput femoris.
- keywords: acta; additive; axis; bone; compression; czech; deformation; direction; displacement; doktor; figure; human; influence; journal; loading; manufacturing; materials; mechanical; models; polytechnica; printing; proceedings; region; resolution; response; samples; setup; strain; stress; structure; tests; tissue; tomographic; trabecular; uniaxial; zlamal
- versions: original; plain text
- app01-5083
- author: Šleichrt, Jan; Kytýř, Daniel; Pithartová, Kateřina; Senck, Sascha; Fürst, David; Schrempf, Andreas
- title: BASIC BIOMECHANICAL CHARACTERIZATION OF POLYURETHANE BASED ARTIFICIAL CANCELLOUS STRUCTURES
- date: 2018-10-23
- words: 2139
- flesch: 56
- summary: Keywords: polyurethane foam, artificial bone, uniaxial loading, digital image correlation. In this case different types of polyurethane foam synthesized as artificial cancellous bone was investigated from biomechanical point of view.
- keywords: acta; applied; artificial; austria; barium; bone; calcium; carbonate; characterization; curves; czech; deformation; digital; effective; figure; filler; foam; force; h2o; high; image; linz; loading; material; mechanical; modulus; mpa; polytechnica; polyurethane; prague; proceedings; results; samples; sciences; stabilizer; strain; stress; structures; sulphate; university; young
- versions: original; plain text
- app01-5088
- author: Doktor, Tomáš; Zlámal, Petr; Šleichrt, Jan; Fíla, Tomáš; Kytýř, Daniel
- title: IMPACT TESTING OF ORDNANCE GELATINE UNDER MODERATE STRAIN RATE CONDITIONS
- date: 2018-10-23
- words: 1890
- flesch: 59
- summary: Acta Polytechnica CTU Proceedings arrangement initial height drop weight impact velocity impact energy [m] Impact tests instrumentation The moderate strain rate compression tests were per- formed by an in-house drop tower developed at CTU FTS
- keywords: acceleration; ballistic; cell; comparison; curves; czech; deformation; density; drop; energy; figure; gelatine; group; impact; loading; material; meshwork; moderate; ordnance; polymeric; quasi; rate; results; samples; static; strain; stress; testing; tests; weight
- versions: original; plain text
- app01-5090
- author: Lehner, Kerstin; Kalteis, Anna; Major, Zoltan
- title: MODELLING AND SIMULATION OF LATTICE STRUCTURES USING VARIOUS MATERIAL MODELS FOR POLYMERIC MATERIALS
- date: 2018-10-23
- words: 3435
- flesch: 55
- summary: The aim of the present work was to characterize and compare var- ious modelled regular open cellular materials defined as lattice structures with applied periodic boundary conditions regarding different material models under various loading conditions. In the next section the simulation approaches and results are presented and in the last section a conclusion for various lattice structures and different material models is drawn.
- keywords: acta; analysis; applied; auxetic; behaviour; change; clte; compression; dependent; different; direction; elastic; elasticity; elasto; expansion; figure; highest; hyper; initial; inner; lattice; linear; lower; material; mechanical; mises; modelling; negative; results; rony; rve; simulations; stiffness; strain; stress; stresses; structure; temperature; tension; thermal; values; visco; von; yield
- versions: original; plain text
- app01-5094
- author: Kiehas, Florian; Kalteis, Anna; Jerabek, Michael; Major, Zoltán
- title: EXPERIMENTAL INVESTIGATION OF THE FAILURE BEHAVIOUR OF POLYPROPYLENE COMPOUNDS FOR INSTRUMENTED PUNCTURE TESTS
- date: 2018-10-23
- words: 3578
- flesch: 63
- summary: Determination of transition temperatures. nomenclature e.g. M3ISOt1: material M3, ISO test standard and 1 mm thick speci- mens.
- keywords: -20; -30; -36; -40; astm; behaviour; brittle; characterization; crack; curve; d3763; data; deflection; determination; different; ductile; ductility; eel; elastic; energy; factors; figure; force; fracture; impact; index; investigation; iso; load; materials; optical; peak; polymer; polypropylene; puncture; ratio; shift; specimen; standard; table; temperature; test; testing; transition; type; values; yielding
- versions: original; plain text
- app01-5096
- author: Adorna, Marcel; Zlámal, Petr; Fíla, Tomáš; Falta, Jan; Felten, Markus; Fries, Michael; Jung, Anne
- title: TESTING OF HYBRID NICKEL-POLYURETHANE FOAMS AT HIGH STRAIN-RATES USING HOPKINSON BAR AND DIGITAL IMAGE CORRELATION
- date: 2018-10-23
- words: 3229
- flesch: 58
- summary: Representative median value of the correla- tion coefficient plotted against strain for three selected experiments (test 270 - short sample at low strain rate, test 285 - short sample at high strain rate, test 317 - long sample at high strain rate) 3.2. Instrumentation The strain wave passing through the incident and transmission bar was measured at two measurement points (MPs) using foil strain gauges (3/120 LY61, HBM, Germany) with 3 mm active length.
- keywords: bar; bars; camera; coefficient; comparison; correlation; curves; deformation; diameter; dic; digital; dynamic; engineering; experimental; fig; figure; foams; gauge; germany; high; hopkinson; hybrid; image; impact; length; loading; long; low; materials; measurement; nickel; pixel; points; polyurethane; pressure; proceedings; rate; results; sample; short; shpb; signal; specimen; speed; strain; stress; structure; test; testing
- versions: original; plain text
- app01-5225
- author: Novák, Ondřej; Frýbort, Jan; Sklenka, Lubomír; Rataj, Jan; Chvála, Ondřej
- title: SCALE AND SERPENT TWO-GROUP CROSS-SECTION DATA GENERATION
- date: 2018-12-14
- words: 3047
- flesch: 60
- summary: [8] T. Lötsch, Fuel assembly burnup calculations for VVER fuel assemblies with the MONTE CARLO code Serpent. In Serpent calculation, B1 correction used 238 group energy structure (scale238
- keywords: absorber; assembly; burnup; calculation; code; coefficient; cross; data; depletion; diameter; difference; diffusion; factor; fast; figure; fission; fuel; generation; group; kgu; macroscopic; memory; multiplication; mwd; nuclear; number; optimization; parameters; pcm; prague; results; scale; section; serpent; similar; study; thermal; total; tube; values
- versions: original; plain text
- app01-5230
- author: Šikl, Matěj; Havlůj, František
- title: UNCERTAINTY EVALUATION IN CRITICALITY CALCULATIONS USING THE TSUNAMI METHODOLOGY
- date: 2018-12-14
- words: 3337
- flesch: 51
- summary: However when code is applicated to spent fuel storage there is not considered effect of disparity between used experiments and newly suggested spent fuel storage. Comparison of irradiated fuel with fresh UO2 and MOX fuel experiments together.
- keywords: applications; approach; bias; burnup; calculations; code; comparison; criticality; different; evaluation; experiments; figure; fresh; fuel; grid; low; mox; nuclear; penalty; pitch; process; results; sensitivity; similarity; storage; systems; table; tsunami; uncertainty; upper; uranium; validation; value
- versions: original; plain text
- app01-5233
- author: Zavadil, Tomáš
- title: SELECTION OF REFERENCE VALUE OF LONGITUDINAL TO TRANSVERSAL ULTRASONIC WAVES VELOCITY RATIO ON PRESSURE PURPOSE STEELS FOR DETECTION OF CREEP
- date: 2018-12-14
- words: 4781
- flesch: 61
- summary: For this experiment, the level of L/T ratio consid- ered as out of standard value range shall be defined as: ∆ cL cT = ∆ cL cT (σ) > Selection of such critical parts or areas is done by comparison with reference benchmark value.
- keywords: article; average; benchmark; c16e; carbon; change; chemical; composition; conventional; creep; degradation; detection; equipment; expected; group; heat; higher; longitudinal; material; max; measurement; p265gh; plastic; poisson; pressure; process; purpose; range; ratio; reference; residual; samples; standard; steel; strain; stress; structural; subject; t ratio; temperature; tempering; transversal; ultrasonic; values; velocity; waves
- versions: original; plain text
- app01-5311
- author: Blažek, Tomáš; Řepka, Jakub; Vlach, Tomáš
- title: BOND CONNECTIONS OF HIGH PERFORMANCE CONCRETE (HPC) AND STEEL: "EXPERIMENTAL VERIFICATION OF SELECTION GLUED FOR TWO DIFFERENT SURFACES OF STEEL"
- date: 2018-12-31
- words: 2801
- flesch: 63
- summary: Compressive strength of used HPC was 113 MPa on cubes with edge length 100 mm according to CSN EN 12 390-3 standard. May be the surface of non-treated steel parts was in- correctly cleaned by technical gasoline or the surface was dusty or wet also in comparison with results of the tensile test.
- keywords: adherence; adherent; adhesives; area; concrete; csn; ctu; curves; czech; design; displacement; elements; epoxy; experiment; facade; force; glued; high; hpc; joint; materials; metal; performance; prague; resin; results; shear; specimens; standard; steel; strength; stress; surface; technical; tensile; test; testing; treatment; types
- versions: original; plain text
- app01-5314
- author: Dohnalová, Lenka; Havlásek, Petr
- title: COMPARISON OF DRYING SHRINKAGE AND DRYING CREEP KINETICS IN CONCRETE
- date: 2018-12-31
- words: 5406
- flesch: 58
- summary: Conclusions The presented study analyzed the time evolution of drying shrinkage εsh,d and drying creep Jd from three different perspectives: the most common design and prediction models, experimental data measured on laboratory concrete specimens, and the finite element simulations. 3 where the normalized drying creep is plotted against normalized drying shrinkage.
- keywords: aci; ambient; autogenous; basic; bryant; case; codes; comparison; compliance; concrete; creep; creep kinetics; data; database; delay; design; different; drying; evolution; experimental; fig; figure; humidity; kinetics; loading; member; model; normalized; paper; parameters; prediction; prediction models; present; relative; relative humidity; results; shrinkage; simulations; size; specimens; strength; structures; study; time; total; ultimate; university; value; εsh
- versions: original; plain text
- app01-5316
- author: Ďureje, Jakub; Prošek, Zdeněk; Hrůza, Jaromír; Tesárek, Pavel
- title: CEMENT MATRIX CONTAINING MICRONIZED RECYCLED CONCRETE AND THE INFLUENCE OF ADDITIVES
- date: 2018-12-31
- words: 2784
- flesch: 58
- summary: For comparison and identification of the influence of recycled concrete, pairs of sample sets were produced, which differed only by replacing part of the cement with micronized recycled concrete. The blocks contains recycled concrete which replacing 40% cement.
- keywords: accelerators; additives; age; cement; compressive; concrete; crp3; ctu; czech; days; dynamic; dynamic modulus; edyn; elasticity; figure; gpa; increase; length; material; measured; method; micronized; mixtures; modulus; recyclate; recycled; recycled concrete; reference; resonance; samples; sets; shear; strength; time; ultrasound; use; values; water
- versions: original; plain text
- app01-5317
- author: Dvořáková, Edita; Patzák, Bořek
- title: ISOGEOMETRIC BEAM ELEMENT EXTENDED FOR GRIDSHELL ANALYSIS
- date: 2018-12-31
- words: 3206
- flesch: 58
- summary: Note, that due to the non-interpolatory nature of NURBS basis functions, the vectors r̄ki and r̄ k j have to be expressed as a linear combination of the control points values using NURBS basis functions evaluated 28 vol. The problem of such a for- mulation is the inability of NURBS basis functions to represent exact solution with discontinuities in strains and internal forces corresponding to concen- trated loadings.
- keywords: acta; analysis; approach; approximation; basis; beam; concentrated; continuity; coordinate; design; element; exact; fem; fig; figure; force; formulation; functions; geometry; gridshell; higher; internal; isogeometric; joints; lath; locking; matrix; modeling; moment; nurbs; order; patch; patches; polytechnica; proceedings; results; shape; shear; single; solution; strains; structure
- versions: original; plain text
- app01-5320
- author: Huttner, Miloš; Fajman, Petr
- title: EFFECT OF VISCOUS DAMPING IN NUMERICAL CALCULATION OF CABLE-MEMBRANE STRUCTURES BY THE METHOD OF DYNAMIC RELAXATION
- date: 2018-12-31
- words: 2775
- flesch: 62
- summary: Comparison of the number of iterations for the damping coefficient determined according to 1 and 2 (red square) with different damping coefficients for Example 3 (SR). Comparison of the number of iterations for the damping coefficient determined according to 1 and 2 (red square) with different damping coefficients for Example 4 (FF).
- keywords: cable; coefficient; critical; damping; different; example; figure; finding; form; frequency; fundamental; iterations; mass; membrane; method; model; number; numerical; oscillation; process; red; response; square; static; structure; vector
- versions: original; plain text
- app01-5324
- author: Klier, Tomáš; Míčka, Tomáš; Polák, Michal; Plachý, Tomáš; Hedvábný, Milan; Jelínek, Roman; Bláha, Filip
- title: APPLICATION OF THE MODIFIED MAGNETOELASTIC METHOD AND AN ANALYSIS OF THE MAGNETIC FIELD
- date: 2018-12-31
- words: 3179
- flesch: 53
- summary: Magnetoelastic stress measurement and material defect detection in prestressed tendons using coil sensors. The magnetic field intensity “H” can be monitored locally, for example, by Hall sensors.
- keywords: application; approach; axial; cable; coil; concrete; configuration; curve; czech; element; em sensor; engineering; evaluation; experiment; field; figure; force; hall; intensity; magnetic; magnetic field; magnetoelastic; measured; measurement; method; new; physical; polák; prague; prestressed; primary; principle; proceedings; secondary; section; sensor; steel; structures; tensile; transverse; wires
- versions: original; plain text
- app01-5329
- author: Mužíková, Barbora; Plaček Otcovská, Tereza; Padevět, Pavel
- title: MODULUS OF ELASCITY OF UNFIRED RAMMED EARTH
- date: 2018-12-31
- words: 3382
- flesch: 68
- summary: More over unfired earth building is a hundred per-cent recyclable. The reason of the trend is mainly the fact that unfired earth is according to the princi- ples of sustainable building development.
- keywords: acta; building; clay; clay ratio; composition; construction; content; ctu; curve; different; earth; elascity; fig; figure; final; gem; iii; illite; kaolinite; kaolinite clay; loam; material; modulus; montmorillionite; mpa; polytechnica; proceedings; product; properties; rammed; rammed earth; ratio; sand; sets; specimens; strain; stress; type; unfired; value; water
- versions: original; plain text
- app01-5331
- author: Němeček, Jiří; Maňák, Jan; Němeček, Jiří
- title: MODELING OF MONOCRYSTALLINE MAGNESIUM MICROBEAM BENDING
- date: 2018-12-31
- words: 2350
- flesch: 59
- summary: Deformed shape and axial stress (X axis) at critical displacement of 2 µm with uninformed wireframe of D cantilever beam. Three dimensional numerical FE model with elastoplastic behavior respecting crystal anisotropy was used to fit experimental load displacement curves.
- keywords: acta; beam; bending; cantilever; constants; critical; crystal; ctu; curves; deformation; different; displacement; elastic; energy; experimental; fib; figure; focused; load; magnesium; material; micro; model; mpa; numerical; orientation; plasticity; polytechnica; prague; prismatic; pure; sem; strain; stress; twinning
- versions: original; plain text
- app01-5332
- author: Pavelcová, Veronika; Poklopová, Tereza; Janda, Tomáš; Šejnoha, Michal
- title: THE INFLUENCE OF BOUNDARY CONDITIONS ON THE RESPONSE OF UNDERGROUND STRUCTURES SUBJECTED TO EARTHQUAKE
- date: 2018-12-31
- words: 3504
- flesch: 53
- summary: Thus to properly represent the results of 1D free field column analysis within a 2D environment calls for other types of boundary conditions that assure, in case of verti- 74 http://dx.doi.org/10.14311/APP.2018.15.0074 http://ojs.cvut.cz/ojs/index.php/app vol. 15/2018 Influence of boundary conditions in earthquake analysis cally propagating shear weaves, the stress state the same along every vertical section in the 2D model as derived from 1D analysis.
- keywords: acta; analysis; boundaries; boundary; boundary conditions; column; conditions; czech; displacement; domain; earthquake; element; engineering; field; fig; figure; finite; free; horizontal; influence; janda; lateral; polytechnica; proceedings; results; section; shear; static; study; surface; time; tunnel; underground; variation; vertical; wave; šejnoha
- versions: original; plain text
- app01-5334
- author: Plaček Otcovská, Tereza; Mužíková, Barbora; Padevět, Pavel
- title: DETERMINATION OF DRYING TIME OF THE RAMMED EARTH WALLS
- date: 2018-12-31
- words: 3101
- flesch: 62
- summary: But at present, unburned earth is minority building material and its properties are not sufficiently investigated. The rammed earth is one of main kind of unburned earth.
- keywords: bodies; building; clay; coefficient; composition; construction; content; decrease; drying; earth; experiment; figure; hour; https://www.scopus.com/term/analyzer.uri?sid=8ee866586b66d91ce67a3f34f5af5efe.wsnaw8kcdt7ipylo0v48ga%3a70&origin=resultslist&src=s&s=title-abs-key%28rammed+clay%29+and+pubyear+%3e+1999&sort=plf-f&sdt=b&sot=b&sl=26&count=70&analyzeresults=analyze+results&txgid=8ee866586b66d91ce67a3f34f5af5efe.wsnaw8kcdt7ipylo0v48ga%3a49; illite; kaolinite; mixture; moisture; moisture content; original; properties; rammed; rammed earth; rate; research; sand; test; test bodies; thickness; time; unburned; unburned earth; value; walls; water; weight
- versions: original; plain text
- app01-5337
- author: Prošek, Zdeněk; Tesárek, Pavel; Trejbal, Jan
- title: MICROSCOPIC AND PHASE ANALYSIS OF CEMENT PASTE CONTAINING WASTE MICRONIZED MARBLE POWDER
- date: 2018-12-31
- words: 3228
- flesch: 64
- summary: Keywords: Micronized marble powder, marble sludge, cement composites, calorimetry, elemental analysis. The image of micronized marble powder, magnified 100×, BSE detector.
- keywords: acta; analysis; calcium; cement; cm2; composition; concrete; czech; density; effect; electron; elemental; figure; flow; gel; grains; grinding; heat; high; hydration; marble; marble powder; marble sludge; materials; micronized; micronized marble; microscopic; mixtures; phase; polytechnica; portland; powder; prague; process; properties; results; samples; second; sludge; speed; technical; university; waste; water
- versions: original; plain text
- app01-5338
- author: Rozsypalová, Iva; Vyhlídal, Michal; Dvořák, Richard; Majda, Tomáš; Topolář, Libor; Pazdera, Luboš; Šimonová, Hana; Keršner, Zbyněk
- title: CHARACTERIZATION OF CEMENT-BASED COMPOSITE EXPOSED TO HIGH TEMPERATURES VIA ULTRASONIC PULSE METHOD
- date: 2018-12-31
- words: 2561
- flesch: 58
- summary: After that, the ultrasonic pulse method was used to determine the degree of damage of temperature loaded specimens. The scope of this paper is to show the results of a pilot study which deals with the characterization of the damage degree of special cement-based composite specimens exposed to high temperatures via ultrasonic pulse method.
- keywords: amplitude; cement; composite; compressive; concrete; correlation; data; figure; high; higher; interfacial; loading; materials; maximum; method; pulse; r21; r31; range; ratio; results; sensor; specimens; strength; surface; table; temperature; test; testing; transition; ultrasonic; zone
- versions: original; plain text
- app01-5341
- author: Šmídová, Eliška; Kabele, Petr
- title: CONSTITUTIVE MODEL FOR TIMBER FRACTURE USED FOR FE SIMULATION OF LVL ARCH
- date: 2018-12-31
- words: 3181
- flesch: 56
- summary: In the end, we can compare the results for Yellow Poplar LVL arch from smeared crack model to the results calculated by interface scheme [22, 24]. Regarding significant variability of timber material parameters, the results show that the model can reproduce the increasing part of the load-displacement response well.
- keywords: analysis; approach; arch; base; behavior; cohesive; constitutive; crack; crit; crown; displacement; element; failure; figure; finite; fracture; grain; input; inverse; laminated; law; linear; load; lvl; material; model; mpa; parameters; poplar; response; results; separation; shear; simulation; specimens; strength; tensile; test; timber; traction; wood; yellow
- versions: original; plain text
- app01-5342
- author: Štěpánek, Jan; Máca, Jiří
- title: RELATION BETWEEN STATIONARY AND MOVING PEDESTRIAN LOAD MODELS
- date: 2018-12-31
- words: 3546
- flesch: 60
- summary: Moving pedestrian load model The moving load models can be used to define the response of the structure to pedestrian load in a very realistic way [5, 7]. Keywords: Footbridges, pedestrian load models, forced vibration, response of structure.
- keywords: acceleration; analysis; basis; beam; coefficient; cross; damping; design; factor; figure; footbridges; force; formula; frequency; functions; harmonic; length; load; locked; mass; maximal; method; model; moving; natural; parameters; pedestrian; pedestrian load; reduction; response; set; single; static; stationary; step; structure; tmd; value; verification; vertical; vibration; walking
- versions: original; plain text
- app01-5345
- author: Trejbal, Jan; Prošek, Zdeněk; Valentová, Tereza
- title: ASSESSMENT OF ADHESION BETWEEN MINERAL AGGREGATE AND BITUMINOUS BINDER USING DIGITAL IMAGE ANALYSIS
- date: 2018-12-31
- words: 3245
- flesch: 54
- summary: Asphalt mixtures composed from grade bitumen 50/70, reference or modified with adhesion promoters based on amines, and aggregate (Brant, Zbraslav, Skuteč – 8-16 mm) were made and then photographed. Keywords: Asphalt mixture, bituminous binder, adhesion promoters, interphase interaction.
- keywords: adhesion; aggregate; analysis; areas; asphalt; assessment; binder; bitumen; bituminous; brant; coated; czech; digital; doi:10.1016; energy; entropy; figure; gray; grey; high; image; level; materials; methods; mineral; mixtures; modified; particles; promoters; properties; rate; reference; results; segmentation; skuteč; software; stripping; surface; technical; thresholding; university; visual; water; zbraslav
- versions: original; plain text
- app01-5346
- author: Valentová, Soňa; Hrbek, Vladimír; Vorel, Jan; Šejnoha, Michal
- title: STRENGTH OF COMPOSITE YARN UNDER BIAXIAL LOADING
- date: 2018-12-31
- words: 2648
- flesch: 57
- summary: Average results of elastic material properties partially taken from the experiment, partially from literature, see [4] and partially set according to the analogy with the carbon fibers, are summarized in Tab. 1. Acta Polytechnica CTU Proceedings doi:10.14311/APP.2018.15.0131 Acta Polytechnica CTU Proceedings 15:131–136, 2018 © Czech Technical University in Prague, 2018 available online at http://ojs.cvut.cz/ojs/index.php/app STRENGTH OF COMPOSITE YARN UNDER BIAXIAL LOADING Soňa Valentováa, ∗, Vladimír Hrbeka, b, Jan Vorela, Michal Šejnohaa a Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic b Institute of Theoretical and Applied Mechanics AS CR, v.v.i., Prosecká 76, 190 00
- keywords: acta; analysis; axis; cell; composite; compressive; ctu; curves; damage; direction; effective; elastic; element; failure; fiber; fig; figure; loading; macroscopic; material; matrix; modulus; numerical; periodic; polytechnica; properties; puc; results; strain; strength; stress; transverse; unit; volume; yarn
- versions: original; plain text
- app01-5355
- author: Balda, Miroslav
- title: BTT & RFLB - THE OPTIMUM SET FOR STEAM TURBINE BLADES MONITORING
- date: 2018-12-31
- words: 2379
- flesch: 64
- summary: BTT, Blade Tip Timing system, is a commercially available system generating files of precise times of blade tips when passing sensors attached in a machine stator. The resulting Fourier spectra are aliased in frequency due to the deep under-sampling of blade tip signals.
- keywords: aliased; analysis; blades; btt; critical; cycle; czech; damage; fatigue; figure; files; frequencies; frequency; function; life; material; modal; monitoring; mpa; nam; natural; operator; reconstructed; relative; residual; rflb; sensors; set; spectra; stress; system; test; time; tip; turbine; wheel
- versions: original; plain text
- app01-5360
- author: Dadáková, Tereza; Kubín, Zdeněk
- title: CALIBRATION OF BTT MEASUREMENT WITH RESPECT TO SENSOR POSITION OVER SHROUDED LSB
- date: 2018-12-31
- words: 3063
- flesch: 63
- summary: The centrifugal force causes untwisting of blades, resulting in force between these contact elements and hence in reduction of blade vibration. New methods of non-contact sensing of blade vibrations and deflections in turbomachinery.
- keywords: amplitude; blade; btt; calibration; coil; current; data; diameter; different; disk; eddy; edge; figure; frequency; gages; magnet; measured; measurement; natural; nodal; optical; position; results; rig; sensor; shape; shroud; shrouded; signal; strain; system; test; tip; use; vibration
- versions: original; plain text
- app01-5365
- author: Jelínek, Tomáš; Němec, Martin; Milčák, Petr
- title: COMPARISON OF TOTAL PRESSURE FLUCTUATIONS IN STEAM TURBINE STAGES WITH DIFFERENT DEGREE OF REACTION
- date: 2018-12-31
- words: 2243
- flesch: 64
- summary: Keywords: Turbine stage, stator-rotor interaction, driving forces. The relative pressure fluctuations are the highest in turbine stage (shown in Fig.
- keywords: absolute; aspect; axial; blade; case; comparison; distribution; excitation; field; fig; figure; flow; half; influence; outlet; potential; pressure; radial; ratio; reaction; rotational; rotor; second; speed; stage; stator; steam; test; total; turbine; unsteady
- versions: original; plain text
- app01-5366
- author: Nesládek, Martin; Jurenka, Josef; Bartošák, Michal; Růžička, Milan; Lutovinov, Maxim; Papuga, Jan; Procházka, Radek; Džugan, Jan; Měšťánek, Petr
- title: THERMO-MECHANICAL FATIGUE ANALYSIS OF A STEAM TURBINE SHAFT
- date: 2018-12-31
- words: 3819
- flesch: 55
- summary: The goal of the work presented in this paper was to provide a computational framework applicable to the thermo-mechanical fatigue (TMF) prediction of steam turbine shafts. The paper describes the approach to prediction of thermo- mechanical fatigue of steam turbine shafts.
- keywords: acta; analysis; approach; axial; conditions; constitutive; creep; ctu; curves; cycle; cyclic; czech; damage; dependent; design; doa; element; energy; experimental; fatigue; fea; fig; figure; finite; histories; loading; material; mechanical; model; operator; order; paper; parameters; plastic; polytechnica; prediction; proceedings; relaxation; response; results; sample; section; shaft; start; steam; steam turbine; strain; stress; temperature; tests; thermal; thermo; time; tmf; turbine; turbine shaft; work
- versions: original; plain text
- app01-5367
- author: Oldřich, Jiří
- title: ISENTROPIC EFFICIENCY OF CENTRIFUGAL COMPRESSOR WORKING WITH REAL GAS
- date: 2018-12-31
- words: 4200
- flesch: 68
- summary: The method is based on numerical solution of basic definitional equation of isentropic process and equation of isentropic efficiency with direct implementation of real gas equation of state (EOS). After every step of the Newton’s method the k-th approximation of the compressibility factor z(k)2a is found from real gas equation of state and then the k-th approximation of the pressure p(k)2a is calculated from equation p (k)
- keywords: actual; c0p; c0v; calculation; case; centrifugal; change; compression; efficiency; enthalpy; eos; equation; figure; gas; heat; ideal; input; isentropic; item; method; molar; p2a; p2s; parameters; pressure; process; real; reversible; solution; state; system; t2a; t2s; table; temperature; work; ρ2a; ρ2s; ∆ha; ∆hs
- versions: original; plain text
- app01-5369
- author: Radnic, Tomáš; Luxa, Martin; Šimurda, David
- title: REGARDING CERTAIN AERODYNAMIC SOURCES OF NON-STATIONARY FORCE LOADS ON TURBINE PROFILES
- date: 2018-12-31
- words: 2790
- flesch: 62
- summary: Keywords: Turbine blade cascade, unstarted supersonic flow, swirl line, off design conditions. Started supersonic flow field.
- keywords: adjacent; blade; cascade; conditions; design; edge; effects; field; figure; flow; flow field; flow separation; force; incidence; inlet; investigation; line; pressure; profile; root; section; separation; shape; shock; supersonic; supersonic flow; swirl; tip; turbine; unstarted; unstarted supersonic; unsteady; wave
- versions: original; plain text
- app01-5454
- author: Ďureje, Jakub; Prošek, Zdeněk; Trejbal, Jan; Tesárek, Pavel
- title: PLASMA MODIFICATION OF POLYVINYL ALCOHOL MICROFIBERS TO IMPROVE COHESION WITH CEMENT MATRIX
- date: 2019-03-21
- words: 2103
- flesch: 57
- summary: Keywords: Plasma fiber modification, fiber surface modification, hydrogen plasma, oxygen plasma, polyvinylalcohol fibers, PVA fibers. Fibers modification.
- keywords: acta; bags; cement; cit; composites; ctu; czech; effect; fibers; figure; gas; hydrogen; matrix; measured; mechanical; microfibers; modification; oxygen; plasma; polytechnica; prague; proceedings; properties; pva; reference; samples; seconds; strength; surface; table; test; time; water; weight
- versions: original; plain text
- app01-5455
- author: Hlůžek, Radim; Trejbal, Jan
- title: USE OF FINELY GROUND RECYCLED CONCRETE FOR IMPROVEMENT OF INTERFACIAL ADHESION IN FIBER-REINFORCED CEMENTITIOUS COMPOSITES
- date: 2019-03-21
- words: 2507
- flesch: 63
- summary: It was shown that the surface roughening of PP fibers was much more intensive than in case of PET fibers. It was assumed that such a treatment had not any effect on physical properties of fiber surfaces. 3.2.
- keywords: acta; adhesion; case; cement; composites; concrete; ctu; czech; doi:10.1016; electron; fibers; figure; ground; interfacial; materials; matrices; matrix; microscopy; mpa; pet; plasma; polytechnica; properties; pull; recycled; reference; shear; stress; surface; tests; types; use; waste
- versions: original; plain text
- app01-5456
- author: Hrbek, Vladimír; Prošek, Zdeněk; Chylík, Roman; Vráblík, Lukáš
- title: MICROSCOPICAL AND MICROMECHANICAL FEATURES OF HIGH PERFORMANCE CONCRETE CONTAINING LOW LEVELS OF FLY ASH
- date: 2019-03-21
- words: 3620
- flesch: 52
- summary: The impact of fly ash on the concrete depend on the level of it content, i.e. in small levels it improves the macro-mechanical properties and durability as well as chemical resistance. Introduction The high performance concrete (HPC) became a com- monly used building material in civil over last years due to increased demands on construction costs reduc- tion, quality of building materials, prolonged service life of constructions, etc. Compare to ordinary con- crete, additional admixtures are added to the mixture, such as fly ash, providing specific features of hardened concrete.
- keywords: addition; aggregate; analysis; ash; building; calcium; cao; ccps; cement; chemical; coal; composite; concrete; construction; csh; czech; data; deconvolution; doi:10.1016; electron; fa20; features; fly; fly ash; high; hydration; image; impact; indentation; individual; journal; levels; low; material; matrix; mechanical; mixture; modulus; oxide; percentage; performance; phases; proceedings; production; products; properties; replacement; representation; republic; research; resistance; sample; spectral; strength; tab; tons; type; volume; water
- versions: original; plain text
- app01-5460
- author: Mariaková, Diana; Vlach, Tomáš; Pavlů, Tereza
- title: GLASS WASTE POWDER UTILIZATION IN HIGH PERFORMANCE CONCRETE
- date: 2019-03-21
- words: 2423
- flesch: 67
- summary: The silica powder was replaced by two types of the waste glass powder, originated from different sources (waste glass powder from grinding jewelry and milling of municipal waste glass). Keywords: Waste glass powder, high performance concrete, durability, mechanical properties.
- keywords: bulk; chemical; concrete; days; density; glass; graph; high; hpc; impact; mechanical; particle; performance; powder; properties; reference; replacement; results; sample; silica; size; strength; tensile; tests; utilization; values; waste; waste glass
- versions: original; plain text
- app01-5462
- author: Řehák, Jakub; Burgetová, Eva; Řehák, Josef; Řehák, Stanislav
- title: RECONSTRUCTION OF THE MONASTERY NEXT TO THE PRAGUE CASTLE
- date: 2019-03-21
- words: 2658
- flesch: 50
- summary: Keywords: Static failures, rising damp, structural survey, historic drainage systems, natural ventilation, sewer, rehabilitation. Historic drainage systems, however by ignorance of their importance and function, were clogged or filled up during reconstruction, possibly walled up as un- necessarily due to amateurish or inadequately carried out surveys or due to ignorance or negligence of geo- logical and hydrogeological conditions.
- keywords: acta; air; building; burgetová; carmel; carmel monastery; castle; complex; czech; drainage; failures; figure; gallery; historic; main; measures; methods; moisture; monastery; nuns; pit; polytechnica; prague; proceedings; radniční; reconstruction; rehabilitation; remedial; stairs; structural; survey; system; time; underground; ventilation; wall; water; řehák
- versions: original; plain text
- app01-5638
- author: Alexa, Martin; Kocáb, Dalibor; Kucharczyková, Barbara; Kotrla, Jan
- title: THE INFLUENCE OF A SHRINKAGE REDUCING ADMIXTURE ON THE LONG-TERM DEVELOPMENT OF DYNAMIC PROPERTIES IN ALKALI-ACTIVATED SLAG
- date: 2019-07-25
- words: 2937
- flesch: 62
- summary: Keywords: Alkali-activated slag, dynamic modulus of elasticity, ultrasonic pulse velocity test, resonance method. Drying and autogenous shrinkage of pastes and mortars with activated slag cement.
- keywords: aas; admixture; alkali; cement; composites; concrete; days; development; doi:10.1016; dynamic; ecrl; ecu; elasticity; figure; glass; influence; materials; method; modulus; mortars; properties; research; resonance; results; shear; shrinkage; slag; specimens; sra; test; time; ultrasonic; values; velocity; water; young
- versions: original; plain text
- app01-5640
- author: Bauerová, Pavla; Reiterman, Pavel; Pavlíková, Milena; Kracík Štorkánová, Magdalena; Keppert, Martin
- title: FRESH STATE PROPERTIES OF LIME MORTARS WITH FLAX OIL ADMIXTURE
- date: 2019-07-25
- words: 2630
- flesch: 54
- summary: Moreover, the introduction of the paper summarizes principal knowledge about action of natural admixtures in lime mortars and plasters on basis of current literature. Animal blood can be also clas- sified as protein admixture, even though its complex composition; it is significantly improving adherence of lime mortar and its durability due to reduction of water absorption and air-entraining effect [10].
- keywords: acids; admixture; air; analysis; behavior; binder; building; cement; concrete; consistency; content; czech; doi:10.1016; dosage; durability; effect; engineering; filler; flax; flow; fresh; ftir; higher; historic; hydraulic; influence; lime; materials; mortar; mosaic; natural; oil; prague; properties; reproduced; republic; results; sample; state; technical; triglycerides; university; value; water
- versions: original; plain text
- app01-5641
- author: Bauerová, Pavla; Prošek, Zdeněk; Krejsová, Jitka; Keppert, Martin
- title: SHORT-TERM CORROSION RESPONSE OF METALS IN LIME MORTAR
- date: 2019-07-25
- words: 1833
- flesch: 57
- summary: Keywords: Metal corrosion, modern mosaics, lime mortar. The present paper is inspired by demand on knowl- edge of corrosion behavior of metallic materials in lime mortar; the demand came from restores deal- ing with mosaics.
- keywords: behavior; brass; carbon; concrete; copper; corroded; corrosion; czech; environment; fig; figure; interface; layer; lead; lime; line; metal; mortar; polytechnica; portlandite; prague; response; results; scan; short; steel; surface; technical; term; university; zinc
- versions: original; plain text
- app01-5646
- author: Hermann, Radek; Drochytka, Rostislav; Kolísko, Jiří; Reiterman, Pavel
- title: OPTIMIZATION OF MIX-DESIGN OF CHEMICALLY RESISTANT SPRAYED CONCRETE
- date: 2019-07-25
- words: 3250
- flesch: 53
- summary: Most frequent glass is soda-lime glass with 50% of silica sand, 10% Na2CO3 (soda), 12% CaCO3 (lime stone), 18% crushed splinters of waste glass and 4% of other substances. In optimized mix-designs, 100% of fine aggre- gate is replaced with waste sand with soluble glass from manufacture of steel (SCSG) and subsequently, combinations were tested with waste glass (Glass), high temperature fly ash (HFA) in the amount of 20- 30% of binder substitution (cement) and slag from deposit yard (SSL) as 100% replacement of coarse aggregate.
- keywords: absorbing; additions; ash; bet; binder; capacity; cement; compressive; concrete; czech; days; deposit; design; fly; glass; high; manufacture; materials; mechanical; mix; optimization; physical; pozzolanic; properties; raw; reference; results; sand; secondary; selected; slag; soluble; specific; sprayed; strength; substitution; temperature; time; university; waste; water
- versions: original; plain text
- app01-5649
- author: Kocáb, Dalibor; Misák, Petr; Jindrová, Barbora; Alexa, Martin; Vymazal, Tomáš
- title: ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY
- date: 2019-07-25
- words: 2097
- flesch: 56
- summary: Keywords: Ultrasonic pulse velocity test, concrete, concrete homogeneity, transducer frequency. [5] ČSN EN 12504-4 - Testing concrete - Part 4: Determination of ultrasonic pulse velocity.
- keywords: analysis; area; concrete; different; experiment; frequency; homogeneity; influence; khz; measurement; measuring; pulse; pundit; results; scanning; setting; slab; standard; test; testing; time; transducers; transit; ultrasonic; values; velocity; vol; čsn
- versions: original; plain text
- app01-5651
- author: Kucharczyková, Barbara; Šimonová, Hana; Halamová, Romana; Kocáb, Dalibor; Alexa, Martin
- title: EXPERIMENTAL ANALYSIS FOCUSED ON THE MATERIAL CHARACTERISTICS OF THE CEMENT-BASED POLYMER-MODIFIED MORTARS
- date: 2019-07-25
- words: 2715
- flesch: 54
- summary: Arrangement of the fracture test (left), compressive strength test (middle) and resonance test (right). Fracture test The fracture characteristics were determined based on the results of the three-point bending test of pris- matic specimens with dimensions of 40 × 40 × 160 mm provided with an initial notch located in the middle of the specimens’ length.
- keywords: ageing; analysis; applications; cement; changes; characteristics; compressive; concrete; days; decrease; development; dynamic; elasticity; engineering; experimental; fig; fracture; increase; length; materials; measurement; modulus; mortars; pcm; pcms; polymer; proceedings; process; results; set; shrinkage; specimens; strength; test; testing; time; values; vii
- versions: original; plain text
- app01-5652
- author: Kuklík, Petr; Velebil, Lukáš; Gregorová, Anna; Svora, Petr
- title: MONITORING AND PROTECTION OF TIMBER-CONCRETE BRIDGES
- date: 2019-07-25
- words: 2789
- flesch: 57
- summary: The majority of timber bridges for ordinary road traffic are often made as timber-concrete composite structures. The reason for decay in timber bridges is nearly always poor detailing for durability, low quality of ma- terials applied and neglected maintenance (a regular check of the whole bridge should be made at intervals not exceeding three to five years).
- keywords: acta; bridges; composite; concrete; czech; data; density; depth; destructive; different; evaluation; fbg; fiber; fig; light; materials; mechanical; methods; monitoring; non; particle; penetration; photocatalytic; planar; polytechnica; proceedings; properties; protection; research; sensors; solution; stress; structural; study; surface; system; timber; tio2; use; water; wood; ρ12
- versions: original; plain text
- app01-5654
- author: Mára, Michal; Říhová, Zdeňka; Kočová, Markéta
- title: INFLUENCE OF CORUNDUM AS COARSE AGGREGATE IN HIGH-PERFORMANCE CONCRETE ON PROJECTILE IMPACT RESISTANCE
- date: 2019-07-25
- words: 2644
- flesch: 61
- summary: In previous experiments, UHPSFRC slabs 50 mm thick without added coarse aggregate stopped this type of projectile, so it is assumed that the plates with coarse aggregate should also resist this type the projectile The table is supplemented with the average values of HPSFRC samples made from a dry prefabricated mixture of multifunctional silicate composite without added coarse aggregate.
- keywords: aggregate; cement; coarse; composite; compressive; concrete; content; corundum; crater; depth; diameter; doi:10.1016; figure; grain; high; hpsfrc; impact; material; mixture; penetration; performance; prefabricated; proceedings; projectile; resistance; samples; size; slabs; steel; strength; structures; surface; table; water
- versions: original; plain text
- app01-5656
- author: Mikulica, Karel; Hájková, Iveta
- title: VERIFICATION OF THE BASIC PROPERTIES OF RECYCLED AND NATURAL AGGREGATES
- date: 2019-07-25
- words: 2524
- flesch: 54
- summary: This leads us to think about how we can use recycled concrete aggregate (RCA) as a substitute for natural aggregate (NA) in concrete mixtures. Keywords: Construction and demolition waste (C&DW), recycled concrete aggregate (RCA), natural aggregate (NA), stone testing.
- keywords: absorption; aggregates; bulk; cement; concrete; construction; density; determination; european; grain; index; material; mechanical; natural; particle; properties; rca; recycled; reference; results; sample; shape; size; standard; table; testing; tests; water
- versions: original; plain text
- app01-5658
- author: Mizerová, Celílie; Kusák, Ivo; Rovnaník, Pavel
- title: ELECTRICAL PROPERTIES OF FLY ASH GEOPOLYMER COMPOSITES WITH GRAPHITE CONDUCTIVE ADMIXTURES
- date: 2019-07-25
- words: 2422
- flesch: 56
- summary: Likewise, the samples with high graphite content exhibited an increase in ca- pacitance. [9, 10], the electrical conductivity of fly ash geopolymer matrix is affected by the NaOH concentration in activator solution, the frequency spectrum and liquid activator/ash ratio (L/A).
- keywords: acta; alkali; ash; binder; capacitance; carbon; changes; composites; composition; compressive; concrete; conductive; conductivity; content; different; electrical; figure; filler; fly; frequency; g10; geopolymer; graphite; higher; increase; materials; matrix; mechanical; microstructure; powder; properties; resistance; samples; strength
- versions: original; plain text
- app01-5660
- author: Pokorný, Jaroslav; Pavlíková, Milena; Pavlík, Zbyšek
- title: THE USE OF LIGHTWEIGHT AGGREGATE IN PREPARATION OF THERMAL INSULATION LIME-BASED RENDERS
- date: 2019-07-25
- words: 3454
- flesch: 59
- summary: Most of buildings are made up of masonry with tra- ditional renders which can be replaced or retrofit by thermal insulation renders made in the same way as those traditional. In fact, the total substitution of silica sand by perlite in tested render mixes resulted in the thermal conductivity even eleven times lower 85 J. Pokorný, M. Pavlíková, Z. Pavlík Acta Polytechnica CTU Proceedings Material Bulk density Apparent density Pozzolanic activity[kg/m3]
- keywords: aggregate; apparent; basic; buildings; bulk; conductivity; data; density; determination; distribution; doi:10.1016; energy; high; hydrated; insulation; lightweight; lime; masonry; material; mechanical; mix; mortar; parameters; particle; pavlíková; perlite; plasters; porosity; pozzolanic; proceedings; properties; reference; renders; samples; sand; silica; size; standard; strength; table; thermal; thermophysical; traditional
- versions: original; plain text
- app01-5662
- author: Prošek, Zdeněk; Tesárek, Pavel; Trejbal, Jan; Horová, Tereza
- title: RECYCLING OF CONSTRUCTION WASTE USING HIGH-SPEED MILLING PROCESS: DETERMINATION OF WASTE CONCRETE
- date: 2019-07-25
- words: 3104
- flesch: 60
- summary: The second column was the column B, which was also made of concrete recyclate fraction 0 Concrete is the most used construction material and therefore sources of concrete recyclate are relatively large and easily accessible.
- keywords: aggregate; analysis; building; c2s; cement; clinker; column; concrete; construction; czech; energy; figure; fraction; grain; ground; gutter; high; individual; materials; mechanical; milling; old; portland; process; production; properties; ray; recyclate; recycled; recycling; reference; results; samples; size; speed; type; university; waste; wt.%; xrf
- versions: original; plain text
- app01-5663
- author: Sedlmajer, Martin; Zach, Jiří; Bubeník, Jan
- title: USING SECONDARY RAW MATERIALS IN LIGHTWEIGHT OPEN-STRUCTURE CONCRETE WITH GOOD UTILITY PROPERTIES
- date: 2019-07-25
- words: 2250
- flesch: 60
- summary: There are several varieties of lightweight foam glass aggregate, depending on manufacturing technology. The paper presents the results of research in lightweight concrete with open structure made using a lightweight porous foam-glass aggregate produced from recycled glass powder.
- keywords: aggregate; bulk; cement; compressive; concrete; conductivity; content; density; european; fibres; figure; foam; fresh; glass; hardened; insulation; lightweight; materials; mechanical; mixtures; pet; properties; recycled; results; standard; state; strength; thermal
- versions: original; plain text
- app01-5666
- author: Šulc, Rostislav; Himmel, Michal; Němeček, Jiří
- title: CHLORIDE RESISTANCE OF NANO-PARTICLE REPAIRED CONCRETE
- date: 2019-07-25
- words: 2520
- flesch: 56
- summary: Figure 2 shows an electrical current waveform pat- tern in accelerated migration of chloride ion samples over a period of 48 hours. Parts of concrete samples were further treated, to increase the resistance of concrete to chloride ion penetration, with a colloidal solution of Nano-silica or solution of Sodium Methyl Siliconate.
- keywords: accelerated; chloride; colloidal; concentration; concrete; diffusion; dispersion; figure; ions; levasil; methyl; migration; nano; natural; němeček; penetration; proceedings; profile; protection; quality; resistance; results; samples; silica; siliconate; sodium; solution; structure; table; test; water
- versions: original; plain text
- app01-5668
- author: Šulc, Rostislav; Krása, Matouš; Formáček, Petr
- title: DURABILITY OF CONCRETE WITH BINDER BASED ON SULFOCALCIC FLY ASH
- date: 2019-07-25
- words: 5774
- flesch: 69
- summary: Deicer salt scaling resistance of high strength concretes made with different cements, p. 185–199. High air content of the series no. 12 resulted in greater waste generation.
- keywords: acta; additive; aeration; aggregate; air; air content; ash; binder; cement; chemical; chemical thaw; coefficient; composition; compressive; concrete; content; cycles; degradation; dependence; different; dose; durability; effect; ele; figure; fluid; fly; fly ash; fpc; greater; high; individual; materials; measured; method; mixture; polytechnica; praha; pressure; requirements; resistance; results; salt; sample; scaling; series; slump; standard; strength; substances; sulfocalcic; surface; table; temperature; thaw; thaw substances; waste; water
- versions: original; plain text
- app01-5670
- author: Trejbal, Jan; Nežerka, Václav; Hlůžek, Radim; Prošek, Zdeněk
- title: MECHANICAL PROPERTIES IMPROVEMENT OF FIBER REINFORCED CONCRETE
- date: 2019-07-25
- words: 3083
- flesch: 57
- summary: It was shown that samples reinforced with modified fibers and contained activating recyclate reached on higher residual bending strength then those with reference fibers. Amount of stress transfered via fibers depends especially on their number and on adhesion between fiber surfaces and the cement matrix [3].
- keywords: acta; adhesion; behavior; bond; cement; composites; concrete; crack; ctu; czech; diameter; displacement; doi:10.1016; fibers; figure; frc; free; improvement; interaction; interfacial; journal; materials; matrix; mechanical; modified; mpa; numerical; p30; plasma; polymeric; polytechnica; prague; proceedings; properties; recyclate; reference; results; seconds; shear; simulations; specimens; strength; stress; surface; tests; treatment
- versions: original; plain text
- app01-5674
- author: Zacharda, Vojtěch; Němeček, Jiří
- title: EXPERIMENTAL STUDIES OF ACCELERATED CHLORIDE TRANSPORT IN CONCRETE
- date: 2019-07-25
- words: 2370
- flesch: 57
- summary: In case of chloride penetration tests, a 3% NaCl solution was used in the compartment with positive electrode and 0.3% NaOH solution in the compartment with neg- ative electrode. After reaching a critical value of chloride concentration on the rebar surface the corrosion of the steel starts [1–3].
- keywords: accelerated; acta; cement; chloride; concentration; concrete; corrosion; ctu; decrease; depth; different; electrode; electromigration; extraction; figure; higher; hours; ions; materials; nacl; němeček; penetration; polytechnica; proceedings; process; profile; samples; solution; steel; surface; tests; transport; types
- versions: original; plain text
- app01-5678
- author: Žižlavský, Tomáš; Vyšvařil, Martin; Rovnaníková, Pavla
- title: PHYSICAL-MECHANICAL PROPERTIES AND DURABILITY OF HYDRAULIC LIME-BASED MORTARS WITH NON-TRADITIONAL BIOPOLYMERS
- date: 2019-07-25
- words: 2744
- flesch: 55
- summary: Alginate biopolymers: Counteracting the impact of superabsorbent polymers on mortar strength. Their use in lime mortars is far less studied, partially due to the amount of production of concrete in comparison with lime for the building purposes.
- keywords: addition; admixtures; aerial; binder; biopolymers; building; cement; coefficient; compressive; concrete; construction; cycles; days; diutan; doi:10.1016; dosage; durability; flexural; flow; gum; hydraulic; lime; materials; mechanical; mortars; physical; properties; reduction; results; rovnaníková; similar; specimens; strength; vyšvařil; water
- versions: original; plain text
- app01-5697
- author: Pruška, Jan
- title: EVALUATION OF UNDERGROUND STRUCTURES SUBJECTED TO SEISMIC LOADS
- date: 2019-07-30
- words: 3170
- flesch: 55
- summary: This may lead to an overestimate of tunnel lining deformations especially in loose rock and soils. Centrifuge modelling techniques allow well for control testing conditions regarding investigations of soil structure interaction in simulated seismic events.
- keywords: acceleration; analysis; analytical; approach; calculation; case; circular; condition; constant; damping; deformation; depth; design; dynamic; earthquake; effects; element; equation; fem; field; figure; finite; forces; free; homogeneous; interaction; layered; lining; loading; loads; mass; maximum; method; model; numerical; ovaling; parameters; proceedings; pseudo; response; rock; seismic; shear; soil; solution; static; strain; structure; tunnel; underground; γmax; γmean
- versions: original; plain text
- app01-5700
- author: Svoboda, Jiří; Hadačová, Dana
- title: A RETAINING WALL RECONSTRUCTION IN KUTNÁ HORA
- date: 2019-07-30
- words: 3061
- flesch: 57
- summary: Keywords: Retaining wall, undermined area, St. Barbara’s church, Kutná Hora. 1. View of the original (top) and new wall (bottom) near St. Barbara’s dome.
- keywords: acta; area; assessment; barbara; basis; board; cave; condition; construction; design; designer; figure; geotechnical; gtm; hora; important; ins; kremnická; kutná; kutná hora; local; mining; monitoring; new; new wall; objects; osel; passport; polytechnica; proceedings; road; rock; safety; shafts; site; static; stone; structure; surrounding; survey; town; traffic; underground; valley; wall; water; work
- versions: original; plain text
- app01-5701
- author: Závacký, Martin
- title: A COMPARISON OF TESTING METHODS FOR DETERMINATION OF SPRAYED CONCRETE TENSILE STRENGTH
- date: 2019-07-30
- words: 1824
- flesch: 59
- summary: Keywords: Tensile strength, sprayed concrete, modified tensile test, splitting tensile test. The tensile strength is usually determined by splitting tensile test in laboratory.
- keywords: average; concrete; diameter; distribution; drilling; dry; figure; material; methods; modified; mtt; proceedings; results; specimen; splitting; sprayed; strength; stt; table; tensile; tension; test; testing; unit; value; weight; σstt
- versions: original; plain text
- app01-6012
- author: Csizér, Tamás; Temesi, Tamás; Molnár, László
- title: MECHANICAL AND OPTICAL INVESTIGATION OF LASER WELDED STRUCTURAL STEEL - POLY(METHYL-METHACRYLATE) HYBRID JOINT STRUCTURES
- date: 2019-12-06
- words: 3221
- flesch: 54
- summary: The latter is usually called laser assisted metal polymer, or LAMP joining for short in publications [14]. Modern welding processes that can easily be automated (such as friction stir welding, laser welding and ultrasonic welding) are gaining popularity in joining metal-polymer hybrid structures.
- keywords: acta; base; beam; cellulose; chemical; direct; doi:10.1016; effect; engineering; failure; fibres; figure; friction; hungary; hybrid; integrated; interface; joined; joining; joints; laser; laser welding; material; mechanical; metal; parameters; pmma; polymer; polytechnica; power; proceedings; process; shear; sitramac; specimens; steel; stir; strength; structures; surface; technology; transmission; transparency; type; ultrasonic; university; unreinforced; values; welding
- versions: original; plain text
- app01-6014
- author: Doktor, Tomáš; Fíla, Tomáš; Koudelka, Petr; Kytýř, Daniel; Jiroušek, Ondřej
- title: COMPRESSIVE PROPERTIES OF AUXETIC STRUCTURES WITH CONTROLLED STIFFNESS OF STRUT JOINTS
- date: 2019-12-06
- words: 2123
- flesch: 60
- summary: µ = − �x �y (3) To exclude values which correspond to both ini- tial settlement and post-yield region after the first plastic collapse, the function of Poisson’s ratio was limited only inside these limit values of strain. More- over, to assess the influence of joints’ stiffness on the mechanical behaviour, ultimate compressive stress of the tested structures was evaluated as well as strain corresponding to the first plastic collapse.
- keywords: acta; auxetic; behaviour; cell; collapse; compressive; curves; deformation; design; figure; group; joints; loading; logarithmic; material; mechanical; parameters; poisson; polytechnica; proceedings; properties; ratio; reinforcement; results; specimens; spheres; stiffness; strain; stress; structures; strut; table; tested
- versions: original; plain text
- app01-6017
- author: Dvořák, Radim; Koudelka, Petr; Fíla, Tomáš
- title: NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT
- date: 2019-12-06
- words: 3201
- flesch: 57
- summary: Length, diameter and impacting velocity were varied parameters and evaluation of their influence on shape of stress pulse was analyzed. The length of the pulse slightly incrreases with longer pulse shaper (see Figure 10).
- keywords: algorithm; apparatus; bar; bars; data; diameter; different; dynamic; elements; equilibrium; experimental; figure; geometries; high; hopkinson; incident; influence; length; mesh; model; numerical; oscillations; parametric; proceedings; pulse; pulse shaper; rate; results; rise; shaper; shpb; size; specimen; strain; stress; striker; study; time; velocity; wave
- versions: original; plain text
- app01-6019
- author: Falta, Jan; Adorna, Marcel; Fíla, Tomáš; Zlámal, Petr
- title: DIRECT MEASUREMENT OF REACTION FORCES DURING FAST DYNAMIC LOADING
- date: 2019-12-06
- words: 2190
- flesch: 58
- summary: Therefore, it is not possible to reach higher precision with load cell than with strain gauges. The overall signal-to- noise ratio with used instrumentation is significantly lower for load cell signal.
- keywords: applied; bar; calibration; cell; coefficient; corresponding; czech; deviation; dynamic; electric; figure; force; gauges; hopkinson; impact; incident; linear; load; load cell; low; measured; measurement; output; piezoelectric; possible; preload; range; sensor; signal; strain; tensile; testing; transducer
- versions: original; plain text
- app01-6031
- author: Říhová, Jitka; Suchý, Tomáš; Vištejnová, Lucie; Horný, Lukáš; Šupová, Monika
- title: MECHANICAL AND STRUCTURAL PROPERTIES OF COLLAGEN NANOFRIBROUS LAYERS UNDER SIMULATED BODY CONDITIONS
- date: 2019-12-06
- words: 4003
- flesch: 59
- summary: For samples exposed in the medium, fibroblast sam- ples and osteoblast samples, a statistically significant increase in the strength limit was recorded, by 12 % (see Fig. 6). day (F21) of fibroblast, 1. (S1) and 21 (S21) of osteoblast samples, * indicates statistically significant differences (Mann-Whitney, 0.05) Figure 6.
- keywords: activity; cells; changes; col; collagen; crosslinking; cultivation; culture; cycle; czech; day; days; dermal; diameter; f21; fiber; fibroblasts; fig; figure; fluorescence; higher; initial; layers; load; m21; materials; measured; mechanical; medium; metabolic; microscopy; modulus; osteoblasts; properties; republic; s21; samples; significant; structural; tensile; test; times; types; usa; values
- versions: original; plain text
- app01-6032
- author: Vinarský, Vladimír; Martino, Fabiana; Forte, Giancarlo; Šleichrt, Jan; Rada, Václav; Kytýř, Daniel
- title: DEFORMATION RESPONSE OF POLYDIMETHYLSILOXANE SUBSTRATES SUBJECTED TO UNIAXIAL QUASI-STATIC LOADING
- date: 2019-12-06
- words: 2453
- flesch: 52
- summary: For further analysis focused on dynamic testing sim- ulating physiological processes new voice coil based loading device will be developed for cyclic loading of proposed materials with frequency Mechanical analysis of soft PDMS require employment of custom designed precise loading device measuring the forces and displacement in millinew- tons and micrometers respectively.
- keywords: acta; analysis; behaviour; cell; components; ctu; czech; data; deformation; device; diameter; dynamic; e0.0; e0.1; e0.3; elastic; experimental; figure; force; height; high; loading; material; mechanical; mixtures; modulus; pdms; physiological; polytechnica; position; precise; procedure; proceedings; properties; range; sample; static; stiffness; strain; stress; substrates; sylgard
- versions: original; plain text
- app01-6089
- author: Kopeć, Marcin; Malá, Martina; Cvrček, Ladislav; Krejčí, Jakub
- title: DEBRIS-FRETTING TEST OF COATED AND UNCOATED ZR-1%NB CLADDING
- date: 2019-12-06
- words: 3169
- flesch: 58
- summary: The percentages of nuclear fuel rod failure causes in U.S. for 2010 The vibration behavior of nuclear fuel under reactor conditions.
- keywords: acta; assembly; chromium; cladding; coated; coated uncoated; coatings; conditions; crn; crn2+cr; ctu; czech; debris; engineering; equipment; failure; figure; fretting; fuel; high; impact; materials; method; min; nuclear; polytechnica; prague; proceedings; reactor; reference; research; resistance; rod; specimens; surface; temperatures; testing; tests; uncoated; way; wear; wire; zr-1%nb
- versions: original; plain text
- app01-6092
- author: Slančík, Tomáš; Števanka, Kamil
- title: EFFECT OF NACL ON NEUTRON FLUX DENSITY IN GRAPHITE BLOCK
- date: 2019-12-06
- words: 3522
- flesch: 55
- summary: It is also planned to measure the effects of other chloride salts, such as LiCl, KCl, CaCl2, MgCl2. As can be seen in the graphs Figure: 6 to 9, the trend of In foils is similar to MCNP simulation results, however most of the reaction rates are higher in the experimental samples than in simulations.
- keywords: acta; activation; air; block; channels; density; detectors; diameter; experiment; figure; flux; foils; graphite; higher; indium; location; mcnp; measurement; measuring; model; molten; nacl; neutron; neutron flux; nuclear; polytechnica; position; r r; rates; reaction; reactor; results; salt; samples; setup; short; simulations; source; table; time; wire
- versions: original; plain text
- app01-6096
- author: Šťastný, Ondřej; Zeman, Miroslav; Král, Dušan; Katovský, Karel; Melyan, Elmira; Adam, Jindřich; Solnyshkin, Alexander Alexandrovich
- title: ANALYSIS OF NEUTRON FIELDS GENERATED IN SPALLATION TARGETS OF B-URAN EXPERIMENTAL ASSEMBLY USING MONTE CARLO METHOD
- date: 2019-12-06
- words: 2829
- flesch: 52
- summary: 24/2019 Analysis of neutron fields generated in spallation targets Figure 1. Spallation targets Several types of spallation target were considered – lead, graphite and bismuth.
- keywords: accelerator; activation; assembly; beam; bismuth; channels; concrete; czech; data; detectors; dose; endf; experimental; fields; figure; flux; gamma; graphite; jinr; lead; length; materials; mcnp; mev; model; nat; neutron; nuclear; proceedings; proton; radiation; radioactive; reactions; research; results; shielding; spallation; target; threshold; university; uran; values
- versions: original; plain text
- app01-6369
- author: Bernardo, Vasco; Krejčí, Tomáš; Koudelka, Tomáš; Šejnoha, Michal
- title: HOMOGENIZATION OF UNREINFORCED OLD MASONRY WALL COMPARISON OF SCALAR ISOTROPIC AND ORTHOTROPIC DAMAGE MODELS
- date: 2020-03-17
- words: 3601
- flesch: 54
- summary: Damage models Generally, damage models distinguish three states of the material - virgin material, damaged material and pseudo-undamaged states. Keywords: Homogenization of unreinforced masonry wall, periodic unit cell, scalar isotropic damage model, orthotropic damage model, “Placa” buildings.
- keywords: acta; applied; bricks; buildings; case; civil; compression; concrete; damage; damage model; direction; effective; elastic; engineering; evolution; fig; figure; homogenization; isotropic; isotropic model; koudelka; loading; local; macroscopic; masonry; material; model; model σ; mortar; numerical; orthotropic; placa; present; principal; proceedings; properties; puc; response; scalar; section; stiffness; strain; strength; stress; tension; unreinforced; wall
- versions: original; plain text
- app01-6370
- author: Bošanský, Michal; Patzák, Bořek
- title: ON TUNING THE DYNAMIC LOAD BALANCING FEM FRAMEWORK
- date: 2020-03-17
- words: 4531
- flesch: 47
- summary: The second source of load imbalance includes external factors, which can change perfor- mance of individual processing nodes or communica- tion network. Parallel algo- rithms should account for load imbalance between particular sub-domains.
- keywords: acta; algorithm; balancing; balancing process; benchmark; communication; computational; computing; cost; ctu; cut; different; distributed; dlb; domain; dynamic; dynamic load; elements; equations; fem; framework; imbalance; individual; intel; linear; load; load balancing; local; memory; micro; model; networks; nodes; nonlinear; number; numerical; overall; paper; parallel; parameter; partitioning; partitions; performance; polytechnica; problem; processing; processor; scalability; set; shared; solution; strategy; system; tests; threads; time; units; weights
- versions: original; plain text
- app01-6372
- author: Dohnalová, Lenka; Havlásek, Petr
- title: SIZE EFFECT ON THE ULTIMATE DRYING SHRINKAGE OF CONCRETE - EXPERIMENTAL EVIDENCE AND ENGINEERING PRACTICE
- date: 2020-03-17
- words: 4445
- flesch: 61
- summary: Size effect on ultimate drying shrinkage evaluated according to selected design codes and pre- diction models. The design and behavior of creep-sensitive structures can be to a large extent dependent on the evolution of drying shrinkage.
- keywords: aci; bryant; characteristic; codes; concrete; creep; data; database; design; different; drying; duration; ec2; effect; effective; eurocode; evolution; experimental; factor; fib; fig; figure; influence; keeton; laboratory; magnitude; member; model; parameters; practice; prediction; shape; shrinkage; size; size effect; specimens; standard; strain; structures; thickness; time; ultimate; ultimate shrinkage; value
- versions: original; plain text
- app01-6374
- author: Ďureje, Jakub; Prošek, Zdeněk
- title: CEMENT PASTE CONTAINING MICRONIZED RECYCLED CONCRETE - INFLUENCE OF HARDENING ACCELERATORS ON THE MODULUS OF ELASTICITY
- date: 2020-03-17
- words: 2456
- flesch: 53
- summary: The blocks contain cement and finely ground recycled concrete in ratio 1:1. Keywords: Finely ground concrete, hardening accelerator, recycled concrete, recycled masonry blocks.
- keywords: accelerator; acta; blocks; building; cement; concrete; construction; ctu; days; dynamic; elasticity; ground; hardening; hours; increase; initial; materials; measured; method; micronized; modulus; oscillation; polytechnica; production; ratio; recycled; reference; resonance; samples; specimens; strength
- versions: original; plain text
- app01-6375
- author: Dvořáková, Edita; Patzák, Bořek
- title: ON EVALUATION OF THE THREE-DIMENSIONAL ISOGEOMETRIC BEAM ELEMENT
- date: 2020-03-17
- words: 3007
- flesch: 62
- summary: The per- formance of the presented element has been compared with standard FEM beam element using benchmark problem of helicoidal spring. The enormous number of nodes, in comparison with beam elements, have to be used in order to obtain sufficiently accu- rate results.
- keywords: acta; analysis; approximation; assumptions; beam; bernoulli; center; control; cross; ctu; dimensional; element; fem; figure; formulation; functions; geometry; iga; isogeometric; knotspans; length; line; nonlinear; nurbs; points; polytechnica; position; proceedings; results; rotation; section; shear; spline; standard; strain; tensor; thin; trihedral; vector; virtual; work; λ(t0
- versions: original; plain text
- app01-6377
- author: Horych, Jan; Tesárek, Pavel; Prošek, Zdeněk
- title: MECHANICAL PROPERTIES OF CEMENT COMPOSITE CONTAINING RECYCLED CONCRETE AND ALKALI ACTIVATED BLAST FURNACE SLAG
- date: 2020-03-17
- words: 2245
- flesch: 64
- summary: Keywords: Composites, waste, blast furnace slag, recycled concrete, cement matrix. Some of these studies are using blast furnace slag or recycled concrete to improve mechanical properties.
- keywords: aggregate; blast; blast furnace; cement; concrete; construction; days; doi:10.1016; dynamic; effect; figure; flexural; furnace; furnace slag; highest; lime; materials; mechanical; modulus; portland; powder; properties; recycled; results; samples; shear; slag; slaked; strength; study; test; young
- versions: original; plain text
- app01-6379
- author: Khmurovska, Yuliia; Štemberk, Petr; Němeček, Jiří; Doleželová, Magdaléna
- title: EXPERIMENTAL AND NUMERICAL INVESTIGATION OF CEMENT PASTE MICROSTRUCTURE AND ITS HYDRATION UNDER SHORT-TERM EXPOSURE TO ACETONE
- date: 2020-03-17
- words: 2907
- flesch: 56
- summary: The immersion of cement samples with the cross-section of 10 × 10 mm in acetone for 24 hours at the sample age of 15 hours does not enable to fully stop the hydration reaction, however, it can slow down the hydration reaction significantly. Conclusions The immersion of cement samples with the cross- section of 10 x 10 mm in acetone for 24 hours at the sample age of 15 hours could not fully stop the hydration reaction, however, it can slow down the hydration reaction significantly.
- keywords: acetone; age; anhydrous; c2s; c3a; c3s; calculated; capillary; cement; clinker; component; concrete; degree; distribution; doi:10.1016/0008; drying; effect; exchange; figure; heat; hours; hydration; investigation; materials; measured; methods; microstructure; nanoindentation; numerical; order; paste; pore; porosity; reaction; research; sample; soaking; solvent; time; volume; water
- versions: original; plain text
- app01-6380
- author: Mikeš, Karel; Bormann, Franz; Rokoš, Ondřej; Peerlings, Ron H.J.
- title: MODELLING OF CRACK PROPAGATION: COMPARISON OF DISCRETE LATTICE SYSTEM AND COHESIVE ZONE MODEL
- date: 2020-03-17
- words: 3406
- flesch: 52
- summary: Keywords: Lattice model, damage, finite element method, cohesive zone model, three-point-bending test, crack propagation. The accuracy and perfor- mance of cohesive zone model predictions are assessed on the example of crack propagation in a three-point- bending test, as shown in Figure 1, by comparison with the exact underlying full lattice model.
- keywords: acta; behaviour; bond; brittle; cohesive; cohesive zone; comparison; considered; corresponding; crack; ctu; damage; discrete; displacement; dissipation; ductile; effective; elastic; element; energy; figure; finite; force; lattice; lattice model; length; loading; material; model; opening; parameter; peak; point; polytechnica; potential; problem; proceedings; process; propagation; results; strain; tensor; test; traction; underlying; zone; zone model; γcz; ψcz
- versions: original; plain text
- app01-6385
- author: Pagani, Claudio; Jirásek, Milan; Horák, Martin
- title: LOCALIZATION ANALYSIS OF AN ORTHOTROPIC MULTI-SURFACE PLASTICITY MODEL UNDER UNIAXIAL STRESS
- date: 2020-03-17
- words: 4431
- flesch: 57
- summary: List of symbols α Parameter that controls the shear stress contribution to tensile failure β Parameter that couples the normal stresses in the compressive failure surface γ Parameter that controls the shear stress contribution to compressive failure le Crack bandwidth H Hardening modulus Hcrit Critical hardening modulus κp Value of the compressive hardening parameter at peak fi,σ Gradient of the i-th yield function with respect to the stress tensor gi,σ Gradient of the i-th plastic potential with respect to the stress tensor n Normal to the discontinuity surface m Polarization vector φ Uniaxial stress angle with respect to the x-axis θ Angle that the generic normal to the discontinuity surface forms with the x-axis θloc Localization angle Acknowledgements In this paper, the localization analysis of the pre- sented macro-model is carried out under the condition of uniaxial stress in tension and in compression.
- keywords: analysis; angle; axes; axis; behavior; case; compression; condition; corresponding; crack; critical; dependence; direction; discontinuity; failure; figure; flow; function; hardening; localization; masonry; material; model; normal; orthotropic; parameters; plane; plastic; plasticity; polarization; respect; shear; softening; strain; stress; structures; surface; tensile; tension; tensor; uniaxial; value; yield; −σt
- versions: original; plain text
- app01-6391
- author: Sekavová, Hana; Herrmann, Jakub; Prošek, Zdeněk; Nyč, Miroslav; Karra’a, George
- title: THE INFLUENCE OF THE USE OF RECYCLED GYPSUM ON THE PROPERTIES OF GYPSUM PRODUCTS IN LABOR CONDITIONS
- date: 2020-03-17
- words: 2368
- flesch: 68
- summary: There is not only concrete in construction and for example gypsum based building materials are very popular for their properties and it is necessary to deal with this issue. There is possibility to replace a part of this stucco with recycled material.
- keywords: blocks; boards; changes; construction; czech; elasticity; fgd; figure; flexural; gypsum; material; milled; module; paper; plaster; production; properties; ratio; recipe; recycled; research; results; samples; slurry; strength; stucco; test; time; volume; waste; water; white
- versions: original; plain text
- app01-6393
- author: Schmidt, Jaroslav; Zemanová, Alena
- title: EULER AND EXPONENTIAL ALGORITHM IN VISCOELASTIC ANALYSES OF LAMINATED GLASS
- date: 2020-03-17
- words: 4673
- flesch: 61
- summary: Scheme of laminated glass sample. Time evolution of deflection of laminated glass sample under uniformly distributed pressure with quadratically increasing intensity according Figure 3 obtained by: Reference – Backward Euler method with ∆t = 0.05 s, Exp – Exponential algorithm, and BE – Backward Euler method.
- keywords: algorithm; analysis; backward; behaviour; cells; comparison; euler; eva; experimental; exponential; field; figure; foil; fracture; generalised; glass; integrators; interlayer; laminated; laminated glass; linear; m ax; material; maxwell; method; model; modulus; numerical; parameters; phase; polymer; pvb; reference; relaxation; response; samples; section; shear; steps; stress; study; temperature; time; validation; viscoelastic; ∆ti
- versions: original; plain text
- app01-6396
- author: Štepánek, Jan; Máca, Jiří
- title: DESIGN OF TUNED MASS DAMPERS FOR LARGE STRUCTURES USING MODAL ANALYSIS
- date: 2020-03-17
- words: 4169
- flesch: 65
- summary: Simplified TMD design method proposed by Den Hartog was compared to numerical optimization. The modal matrix must be mass orthonormal with mode shapes φ arranged as its columns.
- keywords: calculation; coordinates; damping; design; dynamic; equations; evaluation; example; figure; force; freedom; frequencies; frequency; frf; function; highest; load; main; mass; matrix; method; modal; mode; multiple; natural; node; numerical; objective; optimal; optimization; parameters; response; results; section; settings; shapes; simplified; single; structure; system; tmd; tmds; tuned; vibration
- versions: original; plain text
- app01-6397
- author: Šulc, Stanislav; Šmilauer, Vít; Patzák, Bořek
- title: MUPIF WORKFLOW EDITOR AND AUTOMATIC CODE GENERATOR
- date: 2020-03-17
- words: 2129
- flesch: 56
- summary: while time<targetTime: tm.solveStep(...) tf = tm.get(...) mm.set(tf) mm.solveStep(...) ... tm.terminate() mm.terminate() 2. MuPIF workflow generator The concept of MuPIF, especially the unified struc- ture of the APIs allows us to automate generation of the computational steering code when the simulation 107 https://doi.org/10.14311/APP.2020.26.0107 https://ojs.cvut.cz/ojs/index.php/app S. Šulc, V. Šmilauer, B. Patzák Acta Polytechnica CTU Proceedings Figure 1. The execution workflow cannot have such slots because the generated code behaves like a script to be run, not like a module to set some parameters and call its specific functions as in case of class workflow.
- keywords: block; class; code; data; editor; execution; field; fig; figure; generator; input; mechanical; model; mupif; output; property; python; simulation; slots; structure; task; temperature; thermal; thermo; time; workflow
- versions: original; plain text
- app01-6401
- author: Tyburec, Marek; Zeman, Jan; Kružík, Martin; Henrion, Didier
- title: ON OPTIMUM DESIGN OF FRAME STRUCTURES
- date: 2020-03-17
- words: 5664
- flesch: 62
- summary: Polynomial optimization Having introduced three different local approaches to frame structure optimization, it is natural and expected that one asks for a global optimization tech- nique. We show that polynomial optimization solves the frame structure optimization to global optimality by building the (moment-sums-of-squares) hierarchy of convex linear semidefinite programming problems, and it also provides guaranteed lower and upper bounds on optimal design.
- keywords: acta; approaches; areas; asc; beam; column; compliance; convex; criteria; cross; czech; c̃r; degree; design; elements; fig; fmincon; frame; function; general; generalized; global; henrion; k(a; lasserre; linear; local; lower; matrix; methods; non; nsdp; number; optimality; optimization; optimum; order; polynomial; polytechnica; positive; prague; problem; proceedings; programming; relaxation; sectional; semidefinite; solution; stiffness; structures; techniques; topology; upper; variables; vector; volume; ∂ai
- versions: original; plain text
- app01-6403
- author: Vakrčka, Petr; Jíra, Aleš; Hájková, Petra
- title: MECHANICAL TESTING AND NUMERICAL MODELLING OF POROUS STRUCTURES IMPROVING OSEINTEGRATION OF IMPLANTS
- date: 2020-03-17
- words: 4532
- flesch: 62
- summary: Gyroid structures number 1, 2 and 3 fulfilled the criterion for bone ingrowth accord- ing to the literature, gyroid structure number 4 was slightly out of range. The design of 6 types of trabecular and 4 types of gyroid structures is part of the study.
- keywords: acta; additive; bone; compressive; curve; deformation; different; elastic; elastic modulus; figure; force; global; gpa; gradient; gyroid; gyroid structures; implants; loading; lower; manufacturing; material; mechanical; model; modulus; numerical; point; pore; porosity; porous; quasi; size; specimens; stands; strain; strength; stress; structures; study; surface; testing; tests; trabecular; trabecular structures; types
- versions: original; plain text
- app01-6405
- author: Valentová, Soňa; Šejnoha, Michal; Vorel, Jan
- title: COMPARING MORI-TANAKA METHOD AND FIRST-ORDER HOMOGENIZATION SCHEME IN THE VISCOELASTIC MODELING OF UNIDIRECTIONAL FIBROUS COMPOSITES
- date: 2020-03-17
- words: 3772
- flesch: 57
- summary: On the contrary, the contrast in material properties of the fiber and matrix in the transverse plane is relatively small in case of carbon fibers as oppose to basalt fibers. Test of SEPUC applicability: (a-b) creep test - time variation of macroscopic strains due to pre- scribed macroscopic stresses Σxx, Σyy, (c-d) relaxation test - time variation of macroscopic stresses due to prescribed macroscopic strains Exx, Eyy 0 60 120 180 240 300 360 Time
- keywords: acta; analysis; applied; basalt; behavior; carbon; composite; computational; creep; element; engineering; fiber; fibrous; fig; figure; finite; homogenization; increment; loading; local; macroscopic; material; matrix; method; model; mori; phase; polytechnica; prescribed; proceedings; properties; relaxation; response; results; simulations; strain; stress; tanaka; test; time; transformation; unit; viscoelastic; šejnoha
- versions: original; plain text
- app01-6407
- author: Voříšek, Jan; Patzák, Bořek
- title: PRE-PROCESSING OF ADDITIVE MANUFACTURING INPUT FILES FOR NUMERICAL SIMULATION
- date: 2020-03-17
- words: 2646
- flesch: 51
- summary: The first process is the so called horizontal decom- position, where extrusion volume (represented as arbi- trarily oriented rectangle is decomposed to individual voxel column contributions (rasterization). The extruded volume can be calculated as Vin = wihiLi (1) where wi is extrusion width, hi is extrusion volume height and Li is extrusion volume length (see Figure 6).
- keywords: activation; additive; analysis; available; code; commands; deposition; elements; extruded; extrusion; figure; file; finite; geometry; individual; input; intersection; layer; manufacturing; material; mesh; model; moves; numerical; pre; printer; printing; proceedings; process; processing; simulation; software; step; suitable; time; tool; visualization; volume; voxel; width
- versions: original; plain text
- app01-6659
- author: Vokoun, David; Maňák, Jan; Tesař, Karel; Habr, Stanislav
- title: COMPRESSION OF ECAPED TITANIUM MICRO-PILLARS FOR TWO PRINCIPAL ORIENTATIONS
- date: 2020-06-11
- words: 3013
- flesch: 57
- summary: Orientation dependence of compressive and tensile loading of ECAPed titanium samples was demonstrated at macro-scale. In Fig. 3, the stress-strain data belonging to compression loading of ECAPed titanium samples denoted as ID and ED macro-samples and titanium macro-sample with no ECAP treatment denoted as Ti bulk (coarse-grained sample) were taken from our previous study [5].
- keywords: acta; alloys; angle; angular; billet; channel; compression; die; dimensions; direction; doi:10.1016; ecaped; effect; engineering; equal; figure; grain; high; loading; materials; mechanical; micro; pillars; present; pressing; properties; pure; room; samples; science; size; strain; strength; stress; structure; study; temperature; tensile; titanium; true; work
- versions: original; plain text
- app01-6677
- author: Antoš, Jakub; Šulcová, Petra; Lencová, Kateřina; Houdková, Šárka; Duliškovic, Josef; Hajšman, Jan; Burdová, Karolína; Račický, Antonín
- title: LOCAL MECHANICAL PROPERTIES OF ATMOSPHERIC SPRAYED MOLYBDENUM COATINGS DEPOSITED WITH CASCADED PLASMA TORCH
- date: 2020-06-11
- words: 3133
- flesch: 57
- summary: Effect of critical plasma spray parameters on the microstructure, microhardness and wear and corrosion resistance of plasma sprayed alumina coatings. In situ measurement of residual stresses and elastic moduli in thermal sprayed coatings: Part 2: processing effects on properties of mo coatings.
- keywords: arc; atmospheric; coatings; cof; constant; cpsp; critical; current; distance; doi:10.1016; effect; experiment; flow; gas; hardness; jet; layer; main; mechanical; microstructure; modulus; molybdenum; n.4; n.5; nlpm; order; parameters; particles; plasma; powder; primary; process; properties; rate; resistance; results; sets; setup; specimens; spraying; substrate; surface; technology; temperature; test; testing; thermal; torch; wear
- versions: original; plain text
- app01-6678
- author: Daniel, Josef; Grossman, Jan; Buršíková, Vilma; Zábranský, Lukáš; Souček, Pavel; Mirzaei, Saeed; Vašina, Petr
- title: DYNAMIC IMPACT WEAR AND IMPACT RESISTANCE OF W-B-C COATINGS
- date: 2020-06-11
- words: 2669
- flesch: 61
- summary: al. developed FEM simulation of the elastoplastic deformations of material under dynamic impact load [2] or the inclined dynamic impact test - testing of the coated specimens under various angles of inclination [3]. The impact testing was carried out with impact loads of 200 N, 400 N and 600 N. Due to its construction the impact tester is uniquely suitable also for the investigation of the behaviour of the samples under a low number of impacts (≤ 100).
- keywords: adhesion; behaviour; coatings; composition; crater; critical; deformation; different; dynamic; dynamic impact; figure; higher; impact; impact resistance; lifetime; load; mechanical; number; properties; ratio; resistance; results; substrate; test; testing; volume; w ratio; wear
- versions: original; plain text
- app01-6679
- author: Decroos, Franck; Langlade, Cécile; Bourillot, Eric; Darut, Geoffrey; Francois, Manuel
- title: MICRO-SCALE STUDY OF RESIDUAL STRESSES IN CR2O3 COATINGS SPRAYED BY APS
- date: 2020-06-11
- words: 3270
- flesch: 58
- summary: Residual stresses in thermal spray coatings It is today widely-known that residual stresses (RS) have significant implications in both the preparation and the performance of thermally sprayed coatings. Stress variations over centerlines Centerlines stress measurements were performed with Raman spectrometer to be compared to highest fre- quency (11.9 GHz)
- keywords: acta; aps; area; centerlines; chromium; coatings; cr2o3; data; depth; diffraction; field; figure; frequency; ghz; high; investigation; journal; materials; measurements; method; microscopy; microwave; oxide; paper; parameters; polytechnica; raman; residual; results; samples; scale; science; signal; smm; spectroscopy; spray; sprayed; spraying; stress; stresses; study; substrate; surface; table; technology; temperature; thermal; variation; work; xrd
- versions: original; plain text
- app01-6680
- author: Zaoui, Mehdi; Bourceret, Alexandre; Gaillard, Yves; Giljean, Sylvain; Rousselot, Christophe; Pac, Marie-José; Richard, Fabrice
- title: RELATION BETWEEN HARDNESS OF (Ti, Al)N BASED MULTILAYERED COATINGS AND PERIODS OF THEIR STACKING
- date: 2020-06-11
- words: 2269
- flesch: 54
- summary: This result is in very good agreement with the thickness of interfaces observed between TiAl and TiAlN layers evaluated by Electron Energy-Loss Spectroscopy (Figure 5.b). Keywords: Finite element method, hardness, indentation modulus, nanoindentation, TiAl/TiAlN multilayer films.
- keywords: berkovich; coatings; curves; elastoplastic; element; experimental; figure; films; finite; hardness; indentation; interface; mechanical; metal; method; model; monolayer; multilayer; nanoindentation; nanolayers; parameters; perfect; period; properties; results; simulated; stacking; thickness; ti0.54al0.46; tial; tialn)n; transition
- versions: original; plain text
- app01-6682
- author: Houdková, Šárka; Antoš, Jakub; Šulcová, Petra; Lencová, Kateřina; Hajšman, Jan; Burdová, Karolína; Duliškovic, Josef
- title: COMPARISON OF Mo COATING DEPOSITED BY TWAS AND APS SinplexPro THERMAL SPRAY TECHNIQUES
- date: 2020-06-11
- words: 2748
- flesch: 63
- summary: There are no differ- ences in the wear mechanism between APS and TWAS sprayed coating, except the size of delaminated ar- eas. The size of the splats is lower in the case of APS coating, resulting from the fine powder compared to the splats originated from the molten wire tips.
- keywords: aps; astm; coating; coefficient; cof; deposition; differences; doi:10.1016; figure; friction; higher; layer; lower; material; measured; measurements; mechanism; microhardness; microstructure; molybdenum; plasma; process; profile; properties; resistance; sinplexpro; size; splats; spraying; study; surface; technique; test; thermal; twas; value; wear; wire
- versions: original; plain text
- app01-6684
- author: Joska, Zdeněk; Pokorný, Zdeněk; Kadlec, Jaromír; Studený, Zbyněk; Svoboda, Emil
- title: HARDNESS OF NITRIDED LAYERS TREATED BY PLASMA NITRIDING
- date: 2020-06-11
- words: 1716
- flesch: 59
- summary: This paper focuses on the description of the mechanical properties of nitrided layers in the two most widespread austenitic stainless steels AISI 304 and The microstructure and properties of nitrided layers were evaluated by metallography and microhardness measurement.
- keywords: 316l; acta; aisi; austenitic; depth; doi:10.1016; figure; gdoes; hardness; indentation; kadlec; layer; materials; mechanical; microhardness; nitrided; nitriding; plasma; polytechnica; profile; properties; resistance; stainless; steel; surface; thickness
- versions: original; plain text
- app01-6686
- author: Kudělka, Radim; Václavek, Lukáš; Tomáštík, Jan; Malecová, Sabina; Čtvrtlík, Radim
- title: LASER-INDUCED SURFACE ACOUSTIC WAVES FOR THIN FILM CHARACTERIZATION
- date: 2020-06-11
- words: 3577
- flesch: 61
- summary: Knowledge of mechanical properties of thin films is essential for most of their applications. Keywords: Anisotropy, laser-induced surface acoustic waves, nanoindentation, thin films, Young’s modulus.
- keywords: acoustic; anisotropy; c12; characterization; coatings; comparison; czech; density; depth; different; dispersion; doi:10.1016; elastic; evaluation; figure; film; frequency; high; journal; laser; law; material; mechanical; method; modulus; nanoindentation; optical; penetration; phase; poisson; properties; ratio; results; saw; silicon; sio2; substrate; surface; technology; thickness; thin; university; values; velocity; waves; young
- versions: original; plain text
- app01-6687
- author: Lofaj, František; Kabátová, Margita
- title: HARDNESS OF HYBRID PVD-PECVD W-C:H COATINGS VS. SUBSTRATE TYPE
- date: 2020-06-11
- words: 3317
- flesch: 53
- summary: The effects of substrate on the measurement of hardness (and indentation modulus) - penetration depth profiles were investigated on hybrid PVD-PECVD W-C:H coatings made with the additions of C2H2 or CH4 using High Power Impulse Magnetron Sputtering (HiPIMS) method. Load – indentation depth curves from the nanoindentation tests on the HiPIMS W-C:H coatings deposited with 2 sccm C2H2 on Si wafer, 100Cr6 bearing steel and Al 2024 alloy substrates – a) The depth profiles of hardness – b) and indentation modulus – c).
- keywords: acetylene; additions; alloy; coatings; corresponding; depth; differences; different; doi:10.1016; effects; eit; elastic; fig; films; gpa; hardness; hipims; hit; hybrid; hydrogen; indentation; indentation modulus; influence; measurement; modulus; nanoindentation; profiles; properties; pvd; ratio; sccm; steel; substrate; surface; thin; type; wafer
- versions: original; plain text
- app01-6693
- author: Hlobil, Michal
- title: DISTRIBUTION OF HYDRATION PRODUCTS IN THE MICROSTRUCTURE OF CEMENT PASTES
- date: 2020-06-11
- words: 3304
- flesch: 49
- summary: Keywords: Cement paste, hydration products, microstructure, modelling. Distribution of hydrates in the microstructure of cement pastes 0 0.2 0.4 0.6 0.8 1 0 10 20 30 40 50 60 70 80 Bl ai ne fi ne ne ss ≈ 35 0 m 2 /k g W e ig h t fr a c ti o n [ − ] Particle size [µm] ID 133 Figure 1.
- keywords: amorphous; analysis; area; capillary; cement; cement paste; cemhyd3d; clinker; color; composition; compressive; concrete; crystalline; distance; distribution; doi:10.1016; figure; fractions; gel; grains; gypsum; hardened; histogram; hydrates; hydration; image; material; microstructure; model; modeling; nist; particle; particular; paste; phases; pixels; porosity; products; properties; research; results; size; slice; space; spatial; strength; thresholded; tomographic; uniform; volume
- versions: original; plain text
- app01-6695
- author: Hüsken, Götz; Wagner, Lars-Christian; Gluth, Gregor J. G.; Pirskawetz, Stephan; Kühne, Hans-Carsten
- title: APPLICATION OF STEEL FIBRES IN ALKALI-ACTIVATED MORTARS
- date: 2020-06-11
- words: 3865
- flesch: 65
- summary: Load-displacement plots of steel fibres type 1 and 2 embedded in mortar C7a. reaches a stable value or decreases slightly as with increasing fibre pull-out the force transmitting con- tact area between steel fibre and surrounding matrix decreases [17]. Load-displacement plots of steel fibres type 1 embedded in mortar FA5. between steel fibre and surrounding matrix decreases.
- keywords: aam; acoustic; alkali; analysis; application; behaviour; bond; c7a; concrete; crack; dic; different; displacement; emission; fa5; failure; fibre; figure; force; formation; fracture; higher; khz; loading; materials; matrix; mortars; mpa; post; properties; pull; results; second; shows; shrinkage; single; slag; specimen; steel; steel fibres; step; strain; strength; stress; tensile; tests; type; upper
- versions: original; plain text
- app01-6696
- author: Němeček, Jiří; Němeček, Jiří; Lukeš, Jaroslav
- title: NANOINDENTATION AND ACCELERATED PROPERTY MAPPING OF PORTLAND CEMENT PASTE
- date: 2020-06-11
- words: 3058
- flesch: 64
- summary: A very interesting fact was found though: the value of CIT was 6.8 ± 0.3% XPM NI Phase 1.2mN, 2.0mN, 2.0mN, 0.1s,0.2s 3.0s, 3.1s 3.0s, 23.0s LD C-S-H 6.8±0.3% 1.2±0.3% 11.3±3.1% HD C-S-H After parameters were identified, the same set of parameters was used for XPM loading (speed = 20.0 mN/s).
- keywords: cement; creep; czech; effect; fig; gpa; hardness; high; higher; indents; individual; loading; mapping; maps; materials; measurement; mechanical; method; model; modulus; nanoindentation; parameter; paste; period; phases; prague; property; rate; resolution; results; sample; spatial; speed; standard; strain; testing; time; tip; values; xpm; young
- versions: original; plain text
- app01-6699
- author: Guruprasad, Thimmappa Shetty; Keryvin, Vincent; Bourmaud, Alain
- title: ESTIMATION OF ANISOTROPIC ELASTIC PROPERTIES OF CARBON FIBERS USING NANOINDENTATION
- date: 2020-06-11
- words: 3128
- flesch: 47
- summary: Understanding the mechanical behavior of carbon fiber reinforced polymers requires knowledge on the deformation behavior of carbon fibers, they are highly anisotropic and heterogeneous. Nanoindentation experiments are performed on carbon fibers orientated between 0◦ to 90◦ at ten different orientations to the fiber axis.
- keywords: actual; angle; anisotropic; axis; carbon; carbon fibers; constants; cutting; delafargue; direction; elastic; elastic constants; experiments; fibers; figure; glt; gpa; indentation; indentation modulus; longitudinal; material; modulus; nanoindentation; orientation; orientation angle; properties; results; samples; solutions; theoretical; transverse; ulm; vlassak
- versions: original; plain text
- app01-6700
- author: Ovsík, Martin; Staněk, Michal; Dočkal, Adam; Fluxa, Petr
- title: LOCAL NANO-MECHANICAL PROPERTIES OF CROSS-LINKED POLYBUTYLENE
- date: 2020-06-11
- words: 2214
- flesch: 52
- summary: The creation of 3D network caused an increase in nano-mechanical properties values, such as indentation hardness and indentation modulus, in comparison to the virgin material. The effect of cross-linking on nano-mechanical properties of polyamide.
- keywords: 35%gf; beam; chemical; components; creation; creep; cross; crosslinking; depth; doi:10.1016; effect; electrical; electron; engineering; figure; hardness; high; indentation; injection; irradiated; kgy; linking; load; local; material; mechanical; modulus; mpa; nano; network; parameters; pbt; polyamide; polybutylene; polymers; properties; radiation; samples; structural; table; test; time
- versions: original; plain text
- app01-6702
- author: Ovsík, Martin; Staněk, Michal; Dočkal, Adam; Fluxa, Petr
- title: ELECTRON RADIATION EFFECT ON INDENTATION CREEP OF CONSTRUCTION POLYMERS
- date: 2020-06-11
- words: 2384
- flesch: 58
- summary: 27/2020 Electron radiation effect on indentation creep of construction polymers Figure 1. Indentation creep.
- keywords: acta; amounts; beam; behaviour; construction; content; creep; crosslinking; depth; doses; effect; electron; figure; gel; indentation; indentation creep; kgy; material; method; micro; pa6; pa66; polyamide; polymers; polytechnica; process; properties; radiation; results; samples; test; tested; time; value; virgin
- versions: original; plain text
- app01-6706
- author: Kovář, Jaroslav; Fuis, Vladimír; Tomáštík, Jan
- title: INFLUENCING THE INDENTATION CURVES BY THE BLUNTNESS OF THE BERKOVICH INDENTER AT THE FEM MODELLING
- date: 2020-06-11
- words: 2680
- flesch: 64
- summary: The indenters with the rounded tip like spherical, show steeper loading part of the indentation curve than indenters with the sharp tips (Berkovich indenter) Keywords: Berkovich indenter, bluntness, finite element method, nanoindentation.
- keywords: area; berkovich indenter; blunted; bluntness; calculations; case; curve; displacements; fem; fig; indentation; indenter; influence; material; nanoindentation; paper; parameters; plasticity; radius; results; silica; small; specimen; test; tip
- versions: original; plain text
- app01-6707
- author: Materna, Aleš; Haušild, Petr; Ondráček, Jan
- title: COMPARISON OF TWO TECHNIQUES FOR EVALUATING SPHERICAL INDENTATION DATA
- date: 2020-06-11
- words: 2459
- flesch: 57
- summary: New analytical procedure to determine stress-strain curve from spherical indentation data. Two techniques of spherical indentation data evaluation where D is the indenter diameter, and δ is the con- straint factor.
- keywords: 08kh18n10; abi; ball; constraint; contact; curves; data; deformation; depth; diameter; displacement; figure; haggag; higher; indentation; indenter; load; material; method; oliver; pharr; pile; plastic; pressure; reactor; spherical; steel; strain; stress; techniques; tensile; test; testing; true; vessel
- versions: original; plain text
- app01-6709
- author: Haušild, Petr; Čížek, Jakub; Čech, Jaroslav; Zýka, Jiří; Kim, Hyoung Seop
- title: INDENTATION SIZE EFFECT IN HIGH PRESSURE TORSION PROCESSED HIGH ENTROPY ALLOY
- date: 2020-06-11
- words: 2514
- flesch: 57
- summary: High entropy alloy HfNbTaTiZr in as cast conditions and after high pressure torsion straining was characterized by nanoindentation. Keywords: High entropy alloys, high pressure torsion, indentation size effect, nanoindentation.
- keywords: acta; alloy; annealed; cast; characteristic; deformation; dependence; depth; doi:10.1016; effect; entropy; hardness; hfnbtatizr; high; hpt; indentation; infinite; length; limit; mater; material; order; phase; plastic; pressure; properties; range; sample; scale; short; size; solid; solution; strained; straining; temperature; torsion; turn
- versions: original; plain text
- app01-6713
- author: Libera, Ondřej; Halodová, Patricie; Gávelová, Petra; Krejčí, Jakub
- title: NANOINDENTATION OF HYDROGEN ENRICHED Zr-1Nb ZIRCONIUM ALLOY NUCLEAR FUEL CLADDINGS
- date: 2020-06-11
- words: 2507
- flesch: 52
- summary: The 157 O. Libera, P. Halodová, P. Gávelová, J. Krejčí Acta Polytechnica Figure 4. Comparison of average reduced modulus values of reference, 122 ppm and 397 ppm hydrogen enriched E110 samples. 0.5 GPa increase in overall hardness between hydrogen enriched samples in both states.
- keywords: acta; alloy; area; claddings; comparison; e110; figure; fuel; gpa; hardness; hydrides; hydrogen; journal; material; matrix; measured; measurements; mechanical; microhardness; modulus; nanoindentation; nuclear; polishing; ppm; ppm h; preparation; properties; reactors; reduced; reference; research; results; ring; sample; surface; testing; values; water; zirconium; zr-1nb
- versions: original; plain text
- app01-6714
- author: Passilly, Bruno; Molenda, Lara
- title: HOT HARDNESS MEASUREMENTS ON MATERIALS UP TO 600 °C DURING THE FIRST HOUR OF USING
- date: 2020-06-11
- words: 2579
- flesch: 60
- summary: Measuring hardness at high temperature gives important insight of the ther- mophysical properties of the material. Research on micro and nanoindentation at high temperature has increased for the past two decades and many issues remain [3–5].
- keywords: argon; atmosphere; chamber; deviation; duration; effect; figure; following; hardness; high; hot; imprint; indenter; load; materials; maximum; measurements; method; min; oven; overshoot; oxidation; results; sample; series; set; stainless; steel; study; surface; table; temperature; thermal; time
- versions: original; plain text
- app01-6917
- author: Suk, Pavel
- title: METHODS OF XS DATA PREPARATION FOR GEOMETRY WITH FUEL DUMMY
- date: 2020-12-01
- words: 6166
- flesch: 60
- summary: Two group results of the the test case with fuel enrichment 0.7% (reference keff = 0.82853) -50 -25 0 25 50 75 100 125 150 175 200 CASE1 CASE1_COR CASE2 CASE2_COR CASE3 CASE3_COR CASE4_COR CASE5_COR CASE6_COR CASE7_COR CASE8_COR k e ff d if fe re n ce ( p cm ) keff relative difference in each case for 0.7 % enrichment fuel type Figure 2. Relative difference in spectra between SCALE and PARCS calculation for DUM for 0.7% fuel enrichment 4.3.2.
- keywords: 1x10; agreement; approach; approximation; assemblies; assembly; b1 correction; boundary; calculation; case; code; core; correction; critical; cross; data; data preparation; difference; diffusion; dum; eigenvalue; energy; energy group; enrichment; figure; flux; fuel; fuel assemblies; fuel enrichment; geometry; group; higher; keff; lattice; leakage; macroscopic; multigroup; neutron; neutron flux; neutron spectra; parcs; pmaxs; preparation; prepared; process; real; region; relative; results; scale; section; simulation; solution; spectra; table; test; test case; water; xsec
- versions: original; plain text
- app01-6919
- author: Šťastný, Ondřej ; Katovský, Karel ; Král, Dušan ; Krása, Antonín ; Števanka, Kamil
- title: ANALYSIS OF FAST NEUTRON TRANSPORT IN CHLORIDE SALTS USING MONTE CARLO METHOD
- date: 2020-12-01
- words: 2759
- flesch: 54
- summary: One of the project objectives is to investigate chloride salts as potential coolant and a dissolved fuel carrier of advanced nuclear reactor cooled by molten salts and driven by an accelerator. Keywords: Accelerator driven systems, fast neutrons, ADAR, chloride salts, MCNP, molten salt reactors, Monte Carlo simulations.
- keywords: accelerator; activation; assembly; axial; carlo; channel; chloride; data; different; energy; experimental; fast; field; fig; figure; fission; foils; fuel; higher; kcl; material; method; mev; mgcl2; molten; monte; nacl; neutron; non; nuclear; radial; rates; reactions; reactor; results; salt; source; thcl4; threshold; transport; ucl3
- versions: original; plain text
- app01-7030
- author: Barták, Jiří
- title: THE OLDEST UNDERGROUND RAILWAYS IN THE WORLD AND THEIR ANNIVERSARIES
- date: 2021-01-20
- words: 3321
- flesch: 61
- summary: Original Athens metro line after doubling of the track [4] Currently Athens Metro (Aττικó Mετρó ) has 3 lines (see Fig. 4) with an aggregate length of 84.5km. Glasgow orbital metro system [4] In terms of technology, the metro was designed in a very original way.
- keywords: acta; anniversary; athens; budapest; cars; century; construction; continental; ctu; current; development; europe; fig; figure; glasgow; grade; istanbul; length; line; london; london underground; long; metro; new; oldest; operation; polytechnica; proceedings; railway; second; service; single; stations; steam; subsurface; system; technical; terms; track; tunnel; underground; underground railway; urban; work; world; years
- versions: original; plain text
- app01-7034
- author: Vaníček, Ivan ; Pruška, Jan ; Jirásko, Daniel
- title: BIM – AN APPLICATION IN GEOTECHNICAL ENGINEERING
- date: 2021-01-20
- words: 3387
- flesch: 42
- summary: BIM model represents a significant step forward within the frame of the overall process of construction. Ground model is time dependant as geological profile and geotechnical properties are refinement during each phase of ground investigation as well during geotechnical structure construction.
- keywords: 3d model; application; basic; bim; bim model; building; construction; czech; data; design; earth; engineering; execution; expectancy; final; foundation; fragmental; geological; geotechnical; geotechnical engineering; geotechnical structures; ground; individual; information; infrastructure; interaction; investigation; life; main; maintenance; model; modelling; new; phase; process; project; respect; role; significant; standard; step; structures; subsoil; time; transport; underground; valid; working
- versions: original; plain text
- app01-7192
- author: Dohnalová, Lenka ; Havlásek, Petr ; Šmilauer, Vít ; Reiterman, Pavel ; Davidová, Vendula
- title: SIZE EFFECT ON THE ULTIMATE DRYING SHRINKAGE OF CEMENT MORTAR: 1-YEAR EXPERIMENT AND NUMERICAL MODELING
- date: 2021-04-22
- words: 4556
- flesch: 59
- summary: To name a few, the subtle interplay between the development of drying shrinkage and drying creep (investigated e.g. in [1]) can determine whether the durability of con- crete structure will be jeopardized by tensile cracking or the shrinkage-induced tensile stresses are relieved sufficiently fast by increased compliance. A disagree- ment among the different models prevails also in the question of the size-effect on the ultimate value of drying shrinkage [2] which is addressed in this paper.
- keywords: acta; ambient; analysis; bažant; case; changes; concrete; conditions; creep; d ity; data; day; days; design; development; drying; duration; effect; evolution; experiment; fig; frame; havlásek; henv; humidity; left; loss; manual; material; measured; measurements; mm d; model; moisture; mortar; paper; parameters; polytechnica; relative; relative humidity; results; right; shrinkage; simulations; size; size effect; specimens; structures; time; ultimate; value
- versions: original; plain text
- app01-7193
- author: Ďureje, Jakub ; Prošek, Zdeněk ; Trejbal, Jan ; Tesárek, Pavel ; Potocký, Štěpán
- title: PLASMA MODIFICATION OF MICROFIBERS - APPLICATION TO LIGHTWEIGHT CEMENT COMPOSITE CONTAINING RECYCLED CONCRETE
- date: 2021-04-22
- words: 2400
- flesch: 58
- summary: Samples containing plasma modified fibers achieved slightly higher compressive strengths compared to samples without plasma modification. Compressive strength and density of lightweight cementitious composites containing recycled concrete reinforced by plasma modified fibers.
- keywords: agent; cement; cementitious; chamber; cohesion; composite; composition; concrete; czech; fibers; figure; foaming; increase; lightweight; material; matrix; mechanical; microfibers; micronized; modification; oxygen; plasma; plasma modification; polypropylene; prague; process; properties; recycled; reinforcement; samples; surface; table
- versions: original; plain text
- app01-7194
- author: Dvořáková, Edita ; Patzák, Bořek
- title: ON COMPARISON OF 3D ISOGEOMETRIC TIMOSHENKO AND BERNOULLI BEAM FORMULATIONS
- date: 2021-04-22
- words: 2728
- flesch: 63
- summary: Comparison of covergence of Timoshenko beam element and Bernoulli beam element. The error of Bernoulli beam formulation to the Timoshenko reference solution for different cross- sections.
- keywords: analysis; basis; beam; beam element; bernoulli; bernoulli beam; cad; comparison; control; convergence; cross; curved; description; displacement; element; error; fem; figure; formulation; functions; geometry; isogeometric; locking; numerical; nurbs; order; points; position; section; shear; standard; theory; timoshenko; timoshenko beam; treatment; vertical
- versions: original; plain text
- app01-7195
- author: Faltus, Ondřej ; Horák, Martin
- title: FINITE ELEMENT IMPLEMENTATION OF GEOMETRICALLY NONLINEAR CONTACT
- date: 2021-04-22
- words: 3374
- flesch: 61
- summary: Moreover, contact conditions introduce essentially a new set of boundary conditions into the task. Contact conditions are introduced between the lower edge of the beam and the upper edge of the can- tilever below.
- keywords: approach; beam; boundary; cantilever; class; code; computational; conditions; configuration; constraints; contact; deformed; discretization; edge; element; figure; finite; forces; formulation; function; gap; implementation; large; matrix; mechanics; method; new; node; normal; oofem; penalty; point; prague; problems; reference; segment; step; stiffness; strain; structure; vector; x γ; ||n||
- versions: original; plain text
- app01-7196
- author: Horák, Pavel ; Havlásek, Petr
- title: MODELING TIME-DEPENDENT DEFORMATIONS OF CONCRETE MEMBERS SUBJECTED TO SYMMETRIC AND ASYMMETRIC DRYING
- date: 2021-04-22
- words: 4454
- flesch: 57
- summary: Keywords: Concrete, drying shrinkage, finite elements, moisture transport, parameter identification. Conclusions This paper investigated drying shrinkage of concrete slabs exposed to symmetric and asymmetric drying at constant ambient relative humidity.
- keywords: analysis; axial; bažant; behavior; best; calibration; concrete; conditions; constant; creep; curvature; data; days; different; diffusivity; drying; duration; evolution; figure; fits; functions; henv; humidity; material; model; moisture; parameters; reference; relative; relative humidity; set; shrinkage; simulation; slab; structural; symmetric; thick; transport; values
- versions: original; plain text
- app01-7197
- author: Horych, Jan ; Tesárek, Pavel ; Prošek, Zdeněk
- title: MECHANICAL AND CHEMICAL ACTIVATION OF BLAST FURNACE SLAG AND ITS INFLUENCE ON THE MECHANICAL PROPERTIES OF THE RESULTING CEMENT PASTE
- date: 2021-04-22
- words: 3285
- flesch: 66
- summary: Keywords: Activation, blast furnace slag, cement replacement, slaked lime, water-glass. For example, Bellmann F. and Stark J. [1] focused on chemical activation of blast furnace slag by adding calcium hydroxide and soluble calcium salts such as calcium chloride, calcium bromide, calcium nitrate, calcium formate and calcium acetate.
- keywords: a30; activation; av5; blast; blast furnace; calcium; cement; chemical; compressive; concrete; days; dynamic; effect; figure; final; flexural; furnace; furnace slag; glass; lime; materials; mechanical; modulus; portland; properties; samples; shear; slag; slaked; strength; testing; values; water; young
- versions: original; plain text
- app01-7198
- author: Kalmykova, Svitlana
- title: SIMULATION OF T-JOINTS BETWEEN RHS STEEL MEMBERS WITH OFFSET IN ABAQUS CAE
- date: 2021-04-22
- words: 2813
- flesch: 61
- summary: Thus, weld was employed in FE models of offset joints. FE models of joints were composed in compliance with prEN 36 http://dx.doi.org/10.14311/APP.2021.30.0036 http://ojs.cvut.cz/ojs/index.php/app vol.
- keywords: abaqus; analysis; applied; behaviour; brace; chord; connections; czech; element; experimental; figure; finite; hollow; joints; kalmykova; laboratory; material; members; mesh; modelling; models; numerical; offset; plastic; rectangular; results; rhs; seam; sections; shell; simulation; steel; strain; strength; stress; structural; study; tensile; tests; validation; weld
- versions: original; plain text
- app01-7199
- author: Kucíková, Lucie ; Šejnoha, Michal ; Janda, Tomáš ; Padevět, Pavel ; Marseglia, Guido
- title: EVALUATION OF IMPACT OF ELEVATED TEMPERATURES ON YOUNG’S MODULUS OF GLT BEAMS
- date: 2021-04-22
- words: 4619
- flesch: 66
- summary: Keywords: Fire test, GLT beam, tensile test, zero strength layer. [mm] E1 [GPa] E2 [GPa] B A B A B A 4 14.03 17.57 11.46 9.45 9.41 6.69 5 13.85 - 11.55 - 9.54 - 6 13.18 19.36 11.93 8.44 10.06 5.32 7 13.43 - 11.79 - 9.87 - 8 14.16 19.01 11.38 8.64 9.30 5.59 B - before fire test; A - after fire test Table 1.
- keywords: beams; browning; crack; cross; effect; elevated; elimination; failure; fibers; figure; fire; fire test; glt; gpa; indentation; knot; layer; load; lower; mean; measured; median; min; mode; moduli; modulus; num; pilodyn; position; results; samples; section; small; specimens; surface; table; temperatures; tensile; test; type; values; wood; young
- versions: original; plain text
- app01-7200
- author: Mikeš, Karel ; Jirásek, Milan ; Zeman, Jan ; Rokoš, Ondřej ; Peerlings, Ron H. J.
- title: LOCALIZATION ANALYSIS OF DAMAGE FOR ONE-DIMENSIONAL PERIDYNAMIC MODEL
- date: 2021-04-22
- words: 3818
- flesch: 53
- summary: It is obvious that the size of the loading increment to reach link failure or unloading is different in each step. For elastic-brittle links, fail- ure means breaking, i.e., decreasing link stress under constant link strain.
- keywords: bond; broken; case; cell; constant; critical; critical strain; damage; decreasing; diagram; different; dimensional; displacement; elastic; element; failure; figure; final; finite; force; function; horizon; initial; layer; left; length; links; localization; macroscopic; model; nodes; particle; peridynamic; periodic; position; primary; response; results; shortest; size; step; strain; unit
- versions: original; plain text
- app01-7201
- author: Mužíková, Barbora ; Plaček Otcovská, Tereza ; Padevět, Pavel
- title: FRACTURE ENERGY OF ILLITIC RAMMED EARTH WITH HIGH WATER-CLAY RATIO
- date: 2021-04-22
- words: 2060
- flesch: 74
- summary: The article is focused on design of mixture of rammed earth, producing, testing and determination of fracture energy of unfired rammed earth and its stress-strain curve in tensile bending test. The three-point bending test on specimen from rammed earth material.
- keywords: agl; area; bending; binder; building; clay; composition; curve; different; earth; energy; figure; fracture; iii; illite; material; mechanical; mixture; properties; rammed; ratio; sand; set; specimens; strain; stress; test; water
- versions: original; plain text
- app01-7202
- author: Němeček, Jiří ; Němeček, Jiří
- title: NUMERICAL SIMULATION OF SLUMP FLOW TEST OF CEMENT PASTE COMPOSITES
- date: 2021-04-22
- words: 3407
- flesch: 70
- summary: 30/2021 Slump flow test numerical simulation ���PP W� ������V ���PP DLU FHPHQW�S�� W� ��������VW� �����V ���PP ���PP W� ��������VW� �������V ���PP W� ��������VW� ������V W� ��������V ���PP W� ������V W� ������V DLU FHPHQW�S�� ���PP D��QR�PROG E��PROG�OLIWLQJ� ������P�V��QR�VOLS�E�F� W� ������V DLU FHPHQW�S�� ���PP F��PROG�OLIWLQJ� ������P�V��VSHFL¿F�VKHDU�E�F� W� ��������V ���PP ���PP W� ��������V �����PP ���PP �����PP ���PP ���PP ���PP W� ��������V ¿QDO�VSUHDG� �������PP ¿QDO�VSUHDG� �������PP W� ��������V ���PP �����PP ¿QDO�VSUHDG� �������PP Figure 3. 30/2021 Slump flow test numerical simulation PROG��ZDOO����ULJLG�ERG\�PRWLRQ�� YHORFLW\� ����������P�V D��QR�VOLS�E�F� E��VSHFL¿F�VKHDU�E�F� D[LV�RI�V\PPHWU\ FHPHQW�S���� GHIRUPLQJ�PHVK DLU���GHIRUPLQJ�PHVK )J ��PP�JDS E� D[LV�RI�V\PPHWU\ FHPHQW�SDVWH��� VWDWLRQDU\�PHVK DLU���VWDWLRQDU\�PHVK )J D� DLU�FHPHQW�S��� LQWHUIDFH DLU�FHPHQW�S��� LQWHUIDFH �VWDWLRQDU\�ZDOO��QR�VOLS�E�F�� �VWDWLRQDU\�ZDOO��QR�VOLS�E�F�� Figure 1.
- keywords: b.c; calculation; cement; d[lv �; dlu �; fhphqw �; flow; fluid; ghiruplqj �; lifting; lqwhuidfh �; mini; model; mold; numerical; p �; pp �; prog �; prwlrq �; qdo �; results; shear; slump; spread; test; uljlg �; vwdwlrqdu\ �; zdoo �; � e; � erg\; � oliwlqj; � phvk; � qr; � ri; � sdvwh; � v\pphwu\; � vkhdu; � vshfl¿f; � vsuhdg
- versions: original; plain text
- app01-7203
- author: Plaček Otcovská, Tereza ; Mužíková, Barbora ; Padevět, Pavel
- title: INFLUENCE OF EARTH COMPOSITION ON ADSORPTION CAPACITY OF METHYLENE BLUE DYE
- date: 2021-04-22
- words: 2198
- flesch: 69
- summary: 30/2021 Earth Composition and MBD adsorption capacity Kind of Mark of AMM SIO2 AL2O3 FE2O3 TIO2 CAO MGO NA2O K2O clay clay [ml/g] Chemical composition of used clays.
- keywords: adsorption; blue; calculated; capacity; clay; composition; confidence; dye; earth; figure; illite; interval; kaolinite; mark; methylene; methylene blue; montmorillonite; sample; sand; solution; table; test; unfired
- versions: original; plain text
- app01-7204
- author: Poklopová, Tereza ; Pavelcová, Veronika ; Šejnoha, Michal
- title: COMPARING THE HOEK-BROWN AND MOHR-COULOMB FAILURE CRITERIA IN FEM ANALYSIS
- date: 2021-04-22
- words: 3551
- flesch: 68
- summary: This is sup- ported by the possibility of estimating these param- eters through simple empirical formulas on the basis of HB model parameters [1]. One thus has to be extremely careful when specifying the expected range of stresses if adopting just one pair elastic stress path (a) (numerical solution) (b) Figure 6. a) Influence of estimated stress scale, b) evolution of stresses based on HB and MC models. of equivalent shear strength parameters, essentially independent of the actual stress state.
- keywords: analysis; brown; choice; constant; coulomb; criterion; elastic; element; equivalent; factor; failure; fem; fig; figure; function; hoek; mass; model; mohr; mpa; parameters; principal; range; reduction; rock; shear; simple; slope; stability; strength; stress; stresses; yield; σ1,max; σ1n; σci
- versions: original; plain text
- app01-7214
- author: Prošek, Zdeněk ; Sekavová, Hana ; Ryparová, Pavla
- title: INCREASING THE BIOLOGICAL RESISTANCE OF GYPSUM BY MEANS OF SILVER, CALCIUM AND COPPER IONS
- date: 2021-04-22
- words: 2885
- flesch: 59
- summary: For this reason, it is very important to create biological resistance materials that resist the forma- tion of mold on their surface and inside the material. DOI:10.14311/APP.2021.30.0076 Acta Polytechnica CTU Proceedings 30:76–80, 2021 © Czech Technical University in Prague, 2021 available online at http://ojs.cvut.cz/ojs/index.php/app INCREASING THE BIOLOGICAL RESISTANCE OF GYPSUM BY MEANS OF SILVER, CALCIUM AND COPPER IONS Zdeněk Prošeka, b, ∗, Hana Sekavováa, Pavla Ryparováa a Czech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague 6, Czech Republic b Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Třinecká 1024, 273 43 Buštěhrad, Czech Republic ∗ corresponding author: zdenek.prosek@fsv.cvut.cz Abstract.
- keywords: 0.1; acta; addition; antimicrobial; bacteria; biodegradation; biological; building; calcium; composites; copper; ctu; czech; days; doi:10.1016; electron; figure; gypsum; ions; journal; materials; microorganisms; microscope; molds; optical; polytechnica; prague; praha; proceedings; properties; ref; resistance; results; samples; silver; surface; technical; tested; university; use; water
- versions: original; plain text
- app01-7215
- author: Řehounek, Luboš ; Jíra, Aleš ; Javorská, Gabriela ; Bodlák, Daniel
- title: NUMERICAL COMPARISON OF TRANSGINGIVAL AND SUBGINGIVAL DENTAL IMPLANTS IN REGARD TO THEIR STRESS DISTRIBUTIONS
- date: 2021-04-22
- words: 3163
- flesch: 56
- summary: The effect of internal versus external abutment connection modes on crestal bone changes around dental implants: a radiographic analysis. Comparison of placement of the 2 anal- ysed dental implant variants inside the bone.
- keywords: abutment; abutment screw; analysis; area; bone; comparison; concentrations; conditions; connection; ctu; czech; dental; distributions; external; failure; fig; figure; fixation; force; head; hexagon; implant; interface; internal; intraosseous; iso; maximum; mechanical; model; new; old; regard; research; results; screw; shear; specimens; stress; subgingival; tests; transgingival; variant
- versions: original; plain text
- app01-7216
- author: La Malfa Ribolla, Emma ; Jirásek, Milan ; Horák, Martin
- title: BEAM ELEMENT UNDER FINITE ROTATIONS
- date: 2021-04-22
- words: 3810
- flesch: 64
- summary: Kirchoff proposed the first beam for- mulation which includes large three-dimensional de- formations [1, 2], and Reissner completed the theory for both two-dimensional [3] and three-dimensional cases [4] with two additional deformation measures representing the shear distortion of beam segments. Two examples show the capabilities of the element to replicate analytical results in a more accurate way with respect to existing beam finite elements that account for geometric nonlinearities.
- keywords: analytical; approach; arch; beam; centerline; coordinate; cos; displacements; element; end; equations; equilibrium; exact; figure; finite; forces; formulation; integration; large; left; load; mab; method; model; moment; nonlinear; number; numerical; point; present; quoc; respect; rotations; sections; segments; simo; sin; solution; step; strain; theory; values; xab; zab; ϕ(x
- versions: original; plain text
- app01-7217
- author: Sekavová, Hana ; Prošek, Zdeněk ; Ryparová, Pavla
- title: DETECTION OF THE PRESENCE OF MICROORGANISMS DURING PRODUCTION OF PLASTERBOARD
- date: 2021-04-22
- words: 2272
- flesch: 62
- summary: This article is focused on detection microorganisms appearing during production of gypsum plasterboards. This article shows first part of this issue what was detection of the most critical place of production, where is the highest risk of bacterial contamination and it open the area to find suitable modification of production process or recipes of gypsum plasterboards.
- keywords: acta; boards; colonies; construction; cut; czech; days; detection; figure; gypsum; identification; knauf; left; materials; microorganisms; mold; paper; penicillium; plasterboard; polytechnica; prague; praha; presence; process; production; research; resistance; right; sample; slurry; stucco; surface; table; type; water
- versions: original; plain text
- app01-7218
- author: Štěpánek, Jan ; Máca, Jiří
- title: OPTIMIZATION OF TUNED MASS DAMPERS ATTACHED TO DAMPED STRUCTURES - MINIMIZATION OF MAXIMUM DISPLACEMENT AND ACCELERATION
- date: 2021-04-22
- words: 2653
- flesch: 63
- summary: This paper presents an extension of design formulas for the H∞ optimization of tuned mass dampers for damped structures and various frequency response functions. 30/2021 Optimization of tuned mass dampers in damped structures Figure 1. a) Force excitation, b) Support excitation. !
- keywords: acceleration; application; case; d(ω; damping; design; displacement; excitation; figure; force; formulas; frequency; frfs; function; main; mass; optimization; optimum; parameters; point; ratio; response; solution; structure; support; tmd; tuned; vibration
- versions: original; plain text
- app01-7219
- author: Šulc, Stanislav ; Šmilauer, Vít ; Šejna, Jakub ; Wald, František
- title: FIRE PROTECTION OF STEEL ELEMENTS USING LIGHTWEIGHT HYBRID CEMENT MORTAR
- date: 2021-04-22
- words: 1860
- flesch: 56
- summary: We hoped in reaching higher temperatures, but the thicknesses of the mortar and the steel ele- ment were too big and the experiment was stopped after 45 minutes, thus the temperature of the steel el- ement reached only 167 ◦C. But the layer of H-cement was in a state of high temperature, see the simulation results in Figure 11. Material properties of steel structures are significantly reduced at high temperatures, so a fire protection has strong positive impact on the fire resistance of the structure.
- keywords: bulk; cement; conductivity; czech; density; domain; element; experiment; figure; fire; high; hybrid; material; mortar; perlite; prague; properties; protection; resistance; simulation; steel; structures; surface; temperature; thermal
- versions: original; plain text
- app01-7221
- author: Valentová, Soňa ; Šejnoha, Michal ; Vorel, Jan ; Sedláček, Radek ; Padevět, Pavel
- title: APPLICATION OF THE MORI-TANAKA METHOD TO DESCRIBE THE RATE-DEPENDENT BEHAVIOR OF UNIDIRECTIONAL FIBROUS COMPOSITES
- date: 2021-04-22
- words: 3148
- flesch: 58
- summary: Influence of parameters M, N in describ- ing the evolution of ω according to Eq. (14): (a) influ- ence of parameter M , N =1, (b) influence of parame- ter N , M =1. Figure 10. Influence of parameters M, N in describ- ing the evolution of ω according to Eq. (16): (a) in- fluence of parameter M , N =1, T =0; (b) influence of parameter N , M =1, T =0; (c) influence of parameter T , M =N =1. vertically.
- keywords: acta; composites; creep; czech; dependent; evolution; fem; fibers; fibrous; figure; formulation; influence; leonov; macroscopic; material; matrix; method; model; modeling; mori; nonlinear; parameters; phase; polytechnica; predictions; proceedings; properties; rate; response; section; strain; stress; study; tanaka; unidirectional; viscoelastic; vorel; šejnoha; τeq
- versions: original; plain text
- app01-7223
- author: Voříšek, Jan ; Patzák, Bořek ; Dvořáková, Edita ; Rypl, Daniel
- title: AUTOMATED BIM ENTITY RECONSTRUCTION FROM UNSTRUCTURED 3D POINTCLOUDS
- date: 2021-04-22
- words: 2962
- flesch: 64
- summary: While point clouds can be directly rendered and inspected, they do not hold any semantics. Keywords: 3d model, BIM, laser scanning, point cloud.
- keywords: automated; available; bim; building; ceiling; cloud; coordinates; czech; data; detection; doors; downsampling; entities; entity; figure; file; floor; grid; laser; library; local; model; normal; opening; plane; point; project; reconstruction; representation; results; room; scanned; segmentation; set; step; user; vector; vertical; wall
- versions: original; plain text
- app01-7224
- author: Vozáb, Jan; Vorel, Jan
- title: MODELLING OF TIME-DEPENDENT BEHAVIOUR OF PARTICULATE THERMOSET POLYMERS
- date: 2021-04-22
- words: 2605
- flesch: 64
- summary: Fracturing rate effect and creep in microplane model for dynamics. Crack shear in concrete: Crack band microplane model.
- keywords: approach; bažant; behaviour; chain; concrete; creep; dependent; deviatoric; elastic; element; engineering; equation; free; jan; journal; material; maxwell; mechanics; microplane; microplane model; model; nonlinear; normal; numerical; polymers; response; shear; strain; stress; time; viscoelastic; volume
- versions: original; plain text
- app01-7418
- author: Drábek, Michal; Mazel, Dominik ; Pospíšil, Jiří
- title: High-speed rail network and periodic timetable: a comparative analysis of operational concepts
- date: 2021-07-14
- words: 3398
- flesch: 60
- summary: There are two main segments of HS service – AVE, and AVANT with Alvia [14]. This paper compares chosen European high-speed railway (HS) networks in terms of their offer of HS passenger service.
- keywords: acta; analysis; approach; austria; carriers; cities; concept; connections; ctu; degree; germany; high; hour; italy; lines; madrid; network; offer; operational; pairs; paris; passenger; peak; periodic; periodicity; polytechnica; proceedings; public; railjet; railway; regular; routes; service; speed; state; station; tgv; thalys; times; timetable; trains; transfer; transport; trunk; vienna
- versions: original; plain text
- app01-7419
- author: Dybala, Vojtěch
- title: Research tools aplicable in designing of high-speed and high-power rail vehicles
- date: 2021-07-14
- words: 2466
- flesch: 56
- summary: The rollers simulating endless rails can be of two basic design types, as applied for roller rigs at CTU in Prague: • Disc type rollers – Figure 1 left, • Drum type rollers – Figure 1 right, which is a pro- totype roller From the historical point of view roller rigs touches the remote past. The laboratory experiments have been carried out on a specially designed laboratory equipment called roller rigs.
- keywords: acta; adhesion; coefficient; components; contact; ctu; drive; dybala; dynamics; electromagnetic; engineering; faculty; figure; frequency; harmonic; high; laboratory; measurements; mechanical; model; oscillations; polytechnica; power; prague; proceedings; railway; real; research; rig; rigs; roller; simulation; slip; speed; system; torque; torsion; traction; vehicles; wheel
- versions: original; plain text
- app01-7420
- author: Hlubuček, Adam
- title: Possibilities of high-speed railway turnout data description
- date: 2021-07-14
- words: 5325
- flesch: 47
- summary: Possible Representation of Turnouts Using the RailTopoModel and railML® 3.1 Modeling Principles A turnout – as the subject of data description – can be viewed from several different points of view. So- called net elements and net relations are used to create the topology of a network.
- keywords: approach; attributes; branch; branches; case; change; complex; curvature; curves; data; description; detailed; direction; elements; entities; entity; figure; format; functional; geometric; geometry; high; infrastructure; infrastructure model; length; level; linear; modeling; module; multipurpose; net; net elements; net entity; objects; order; point; positioning; possible; principles; radius; railml; railtopomodel; railway; railway infrastructure; relations; specific; speed; switch; systems; topological; topology; track; turnout; type; uic; use; value; view
- versions: original; plain text
- app01-7421
- author: Krupík, Pavel
- title: High-speed rail – highway 2.0?
- date: 2021-07-14
- words: 1730
- flesch: 46
- summary: Keywords: High-speed rail, project management, predictive project life cycle, stakeholders, construc- tion 4.0. Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague HIGH-SPEED RAIL – HIGHWAY 2.0? Pavel Krupík Czech Technical University in Prague, Faculty of Civil Engineering, Department of Construction Management and Economics, Thákurova 7/2077, 166 29 Prague 6 Dejvice, Czech Republic correspondence: pavel.krupik@fsv.cvut.cz Abstract.
- keywords: available; construction; cycle; czech; czech republic; development; figure; government; high; life; main; management; motorways; network; possible; prague; predictive; preparation; project; rail; republic; speed; speed rail; stakeholders; transport; years
- versions: original; plain text
- app01-7422
- author: Nachtigall, Petr; Tischer, Erik
- title: Calculation of the minimal length of the high-speed line
- date: 2021-07-14
- words: 2729
- flesch: 56
- summary: Balancing energy consumption and risk of delay in high speed trains: A three-objective real-time eco-driving algorithm with fuzzy parameters. Most important are the tractive characteristics of trainsets, maximum speed, weight, adhesive weight, and vehicle resistance.
- keywords: -0.6; acceleration; adhesion; authors; characteristics; construction; consumption; czech; distance; energy; etcs; figure; high; important; infrastructure; km·h−1; length; line; long; maximum; minimum; model; m·s−2; nachtigall; network; opentrack; pendolino; proceedings; question; railway; republic; research; simulation; source; speed; time; track; traction; trainsets; transport; units
- versions: original; plain text
- app01-7423
- author: Purkart, Pavel; Vodák, David; Javořík, Tomáš; Jacura, Martin
- title: Possible changes in transport conception of international and long-distance railway connections relating the construction of new high-speed railway lines in the Czech Republic
- date: 2021-07-14
- words: 2418
- flesch: 61
- summary: Another important issue is the organization of rail- way traffic on new RS lines. There are already international lines on the Czech railway network.
- keywords: area; brno; conception; connections; construction; current; czech; distance; graphical; high; hours; hsl; international; issue; lines; long; minutes; network; nodes; ostrava; plzeň; possible; praha; railway; republic; speed; time; timetable; trains; transportation; travel
- versions: original; plain text
- app01-7424
- author: Purkart, Pavel; Kruntorád, Jan; Týfa, Lukáš
- title: The assessment of priorities in the construction of new high-speed railway lines in Czech Republic by using the stem method
- date: 2021-07-14
- words: 2360
- flesch: 58
- summary: There has not been set a limit for individual RS sections as a limitation of financial costs. Then these num- bers were distributed on individual RS sections and the average for these sections were calculated, • number of redirected long-distance lines ex- pressed as an importance: three categories were set for each evaluated section based on the evalua- tion below: 1: up to 10 redirected long-distance routes in both directions per day, 2: up to 30 redirected long-distance routes in both directions per day, 3: over 30 redirected long-distance routes in both directions per day.
- keywords: brno; calculation; construction; criteria; criterion; ctu; czech; evaluation; germany; individual; lines; long; method; network; number; optimalization; plzeň; potential; prague; praha; railway; republic; routing; sections; solution; solver; stem; value; zii
- versions: original; plain text
- app01-7425
- author: Šlapák, Jiří; Michálek, Tomáš
- title: Vehicle/track interaction under the conditions of high speed railway operation
- date: 2021-07-14
- words: 4915
- flesch: 65
- summary: The static values of the wheel forces are given by the relevant axle load; amplitudes of the oscillations are influenced with the unsprung masses, vehicle speed and the track irregularities [1]. In addition to the technical solution of the vehicle, the damaging effect also depends on the operating condi- tions of the vehicle (radii of curves, vehicle speed).
- keywords: body; conditions; curve; deficiency; dynamic; figure; force; high; influence; interaction; model; multi; number; number values; operation; outer; parameters; radius; railway; railway vehicle; running; scenario; simulation; specific; speed railway; speed v; sum; track; values; vehicle; vehicle speed; wear; wear number; wheel
- versions: original; plain text
- app01-7427
- author: Vogl, Jan; Jánešová, Mária
- title: Maintaining the competitiveness of the czech railway industry
- date: 2021-07-14
- words: 1304
- flesch: 45
- summary: Prague 1, Czech Republic ∗ corresponding author: vogljan@fd.cvut.cz Abstract. The largest volume of Czech exports has been realized in the long term within the European Union countries, such as Germany, France, Great Britain and Poland.
- keywords: analysis; available; companies; competitiveness; czech; development; equipment; european; exports; foreign; important; industry; innovation; lcc; products; railway; republic; research; sitc; total; transport; vehicles
- versions: original; plain text
- app01-7850
- author: Herza, Jiří ; Singh, Ryan
- title: CONSIDERATIONS FOR BRITTLENESS IN TAILINGS
- date: 2022-01-19
- words: 6471
- flesch: 52
- summary: In comparison, shear resistance is hereby defined as the ability of a soil to withstand shear stress under a given set of conditions. Because of the major differences between the de- scribed processes leading to the reduction of the soil’s ability to resist shear stress, it is proposed that shear resistance loss caused the irreversible change of the soil’s structure as described by [1] and others be re- ferred to as structural brittleness.
- keywords: behaviour; bishop; brittle failure; brittleness; brittleness index; cemented; change; clay; concept; conditions; contractive; critical; csl; dam; development; effective; effective stress; excess; failure; figure; index; loss; material; mean; normal; parameter; particles; peak; peak shear; pore; potential; pressures; range; rate; ratio; reduction; residual; resistance loss; sands; shear; shear resistance; shear strength; shear stress; shearing; soil; state; strain; strength loss; stress; structural; structural brittleness; tailings; undrained; undrained brittleness; value; void; water
- versions: original; plain text
- app01-7851
- author: Pruška, Jan ; Pavelcová, Veronika
- title: CALCULATION OF SEISMICALLY LOADED EARTH RETAINING STRUCTURES
- date: 2022-01-19
- words: 4315
- flesch: 63
- summary: It is an alternative to the standard M-O equations for seismic earth pressures suffering thus from the same limits as the M-O method. Comparison of methods for calculating the passive coefficient of seismic earth pressure According to the literature, the procedures recom- mended by Eurocode 1998-5 give (δ = 0◦) (which corresponds to its requirements) the most conserva- tive values of all the methods.
- keywords: acceleration; active; angle; backfill; calculation; chen; coefficient; design; earth; earth pressure; equation; eurocode; figure; friction; height; horizontal; inclination; khd; liu; method; mononobe; mylonakis; nchrp; o method; okabe; passive; plane; pressure; retaining; seismic; shear; soil; static; structures; terrain; values; vertical; wall
- versions: original; plain text
- app01-7862
- author: Vaníček, Ivan ; Jirásko, Daniel
- title: THE IMPORTANCE OF A COMBINED 3D MODEL OF GROUND AND GEOTECHNICAL STRUCTURE
- date: 2022-01-19
- words: 3584
- flesch: 46
- summary: The mutual connection of a 3D model of ground with a 3D model of geotechnical structure can help to give a clearer view of the interaction of this structure and ground. Keywords: 3D ground model, 3D model of geotechnical structure, BIM, phases of geotechnical investigation, principles of sustainable construction.
- keywords: 3d model; bim; building; construction; czech; decision; design; different; earth; engineering; eurocode; execution; foundation; geological; geotechnical; geotechnical design; geotechnical investigation; geotechnical structure; ground; important; individual; information; investigation; layer; lithological; model; phase; point; possible; preliminary; process; properties; second; step; structure; subsoil; survey; time; transport; underground; use; view; čsn
- versions: original; plain text
- app01-7865
- author: Vojtasík, Karel
- title: ASSESSMENT OF SHEAR STRENGTH PARAMETERS OF SOIL FROM LOAD MICROPILE TESTS
- date: 2022-01-19
- words: 4060
- flesch: 61
- summary: Keywords: Displacement on load diagram, load test, micropile, Mohr-Coulomb, shear strength, soil. The peak force Fp extracted from diagram of displacement on load by compression test there is derived a peak shear resistance Tp at the tube shape surface of the micropile and this equals the sum of a shear resistance due to cohesion Tc and a shear resistance due to angle of internal friction Tφ.
- keywords: angle; cohesion; compression; compression load; compression test; concrete; concrete prismatic; cube; diagram; displacement; figure; force; friction; ground; internal; laboratory; load; load force; load test; micropile; parameters; peak; prismatic; prismatic cube; residual; shape; shear; shear strength; site; soil; state; steel; strength; stress; surface; test; traction; traction load; tube; value
- versions: original; plain text
- app01-7971
- author: Anderson, Jane ; Moncaster, Alice
- title: Using an analysis of concrete and cement EPD: verification, selection, assessment, benchmarking and target setting
- date: 2022-03-03
- words: 3543
- flesch: 50
- summary: For cement EPD, Figure 1 can be used to check the clinker content and embodied carbon are within the expected region of the graph, especially for CEM I, II, III and IV cements. For concrete EPD for verification, we recommend checking them against Figure 3 which provides the embodied carbon ranges (mean and upper and lower quartile) for different countries and 28-day strengths to see that the embodied carbon is in the expected region of the graph.
- keywords: aggregates; analysis; anderson; assessment; benchmarks; buildings; carbon; cement; coefficients; concrete; construction; data; datapoints; day; emissions; energy; environmental; epd; figure; graph; iea; impact; industry; information; iso; lca; literature; lower; materials; mix; moncaster; production; products; range; ready; results; review; selection; setting; specific; strength; sustainability; sustainable; systematic; use; verification
- versions: original; plain text
- app01-7973
- author: Arrigoni, Alessandro ; Opher, Tamar ; Spatari, Sabrina ; Arosio, Valeria ; MacLean, Heather L. ; Panesar, Daman K. ; Dotelli, Giovanni
- title: Environmental impacts of using desalinated water in concrete production in areas affected by freshwater scarcity
- date: 2022-03-03
- words: 3457
- flesch: 52
- summary: Keywords: Carbon footprint, desalinated water, seawater, water footprint. 33/2022 Concrete Made of Desalinated Water Scenario Unit process Water footprint(L-eq./m3 concrete) Carbon footprint (kg CO2-eq./m3 concrete) Desalinated Desalination 18 0.27 Distribution 4.8 0.071 Mixinga 0.0 Excluded Total 23 0.34 Seawater Transportation 1.8 · x 0.016 · x Mixinga 0.0 Excluded Total 1.8 · x 0.016 · x a The energy intensity of the mixing process, and therefore the greenhouse gas emissions and water footprint associated with the process, is assumed to be independent from the water used (DSW or SW) and therefore excluded from the analysis.
- keywords: assessment; batching; carbon; change; co2; concrete; consequential; consumption; cycle; desalinated; desalination; dsw; emissions; engineering; environmental; footprint; freshwater; gas; greenhouse; grid; impacts; israel; lca; life; marginal; mix; mixing; municipal; plant; potable; process; production; results; scenarios; seawater; study; supply; system; trucks; untreated; water
- versions: original; plain text
- app01-7974
- author: Bencardino, Francesco ; Nisticò, Mattia
- title: Stainless steel-FRCM system for strengthening of RC beams: towards a sustainable strengthening technique
- date: 2022-03-03
- words: 3451
- flesch: 56
- summary: Geometry of control and strengthened beams: a) RC control beam; b) EB technique and c) IRS technique. Mechanical property M beams C beams Diameter !
- keywords: beams; bencardino; cementitious; composites; concrete; cyclic; e �; engineering; experimental; external; failure; figure; flexural; frcm; group; https; innovative; internal; irs; load; loading; materials; matrix; mechanical; members; mpa; process; properties; reinforcement; results; specimens; stainless; steel; strengthened; strengthening; structural; surfaces; system; table; technique; tensile; tested; traditional
- versions: original; plain text
- app01-7975
- author: Brankley, Lee ; Turgul, Ayhan ; Morgan, Lyn ; Camci, Ladin
- title: Conformity assessment model for mechanical coupling devices and anchors for reinforcing steel for use in concrete structure
- date: 2022-03-03
- words: 3274
- flesch: 43
- summary: This CARES digital platform plans to cover all stages in the supply chain from receipt of raw materials, the manufacture and processing of steel products through to delivery to the end user. The essential elements of the quality management system combined with additional requirements on process control, product testing and robust installation methodology are essential and agreed by all relevant sectors of industry.
- keywords: anchors; appropriate; approval; assessment; cares; certification; chain; concrete; conformity; construction; control; couplers; cycle; fatigue; independent; installation; iso; key; management; manufacturing; operations; performance; process; product; quality; rebar; reinforcement; relevant; requirements; schedule; scheme; specification; standard; steel; supply; surveillance; system; ta1; technical; technical approval; tension; testing; use
- versions: original; plain text
- app01-7976
- author: Broukalová, Iva ; Kohoutková, Alena ; Horáková, Anna ; Schreiberová, Hana
- title: Application of high performance concrete for reconstruction
- date: 2022-03-03
- words: 3851
- flesch: 48
- summary: 33/2022 Application of High Performance Concrete for Reconstruction Parameter Units Default settin Multiplication factor Concrete material model Young modulus MPa 32000 0.56 Tension strength MPa 2.9 1.00 Compressive strength MPa −38 0.79 Fracture energy MN/m 0.000073 1.14 Tension stiffening − By using an appropriate finite element software (e.g., ATENA, ABAQUS) and material models, the studies have been generally able to successfully describe the structure behaviour with only little (no more than 13.4%) deviations from the mechanical test results.
- keywords: analysis; application; atena; bars; beams; bending; calibration; cmod; compressive; concrete; curve; destructive; experimental; figure; force; geometry; high; layer; loading; material; measurements; mechanical; model; modelling; new; non; numerical; order; original; panels; parameters; performance; point; possible; reconstruction; specimens; steel; strengthened; strengthening; structures; surface; tensile; test; uhpc; ultra; values
- versions: original; plain text
- app01-7977
- author: Carstens, Stefan ; Pahn, Matthias
- title: Durability of GFRP connectors under sustained compression load for use in sandwich walls
- date: 2022-03-03
- words: 2687
- flesch: 55
- summary: Keywords: Durability, GFRP connector, sandwich wall sustained compression load. Geometry of the test specimens for short- and long-term tests under compression load.
- keywords: anchor; bearing; behaviour; capacity; composite; compression; concrete; connectors; creep; dead; deformation; durability; experimental; facing; failure; fibre; figure; geometry; gfrp; glass; insulation; kaiserslautern; layer; life; load; material; matrix; mit; pahn; products; results; sandwich; service; specimen; support; sustained; system; temperature; term; test; thermal; thickness; von; wall
- versions: original; plain text
- app01-7978
- author: Colombo, Isabella Giorgia ; Colombo, Matteo ; di Prisco, Marco
- title: TRC sandwich solution for energy retrofitting
- date: 2022-03-03
- words: 3668
- flesch: 55
- summary: TRC sandwich panels were proposed about 15 years ago by German researchers [3] and constituted a new idea in the framework of cement-based sandwich elements: TRC thickness (10-15 mm) is smaller than that of traditional R/C external claddings (>40 mm) TRC sandwich panel for energy retrofitting exposed to environmental loading.
- keywords: beams; behaviour; bending; buildings; colombo; compressive; concrete; core; diatomite; direction; displacement; easee; energy; eps; european; experimental; fabric; figure; insulation; layers; load; m. colombo; material; model; mortar; mpa; numerical; p.i.qu.e.r; panel; point; prisco; project; ratio; results; retrofitting; sandwich; scale; size; smart; solution; specimen; strength; stress; tensile; test; textile; trc; yield
- versions: original; plain text
- app01-7979
- author: Crisci, Giovanni ; Ceroni, Francesca ; Lignola, Gian Piero ; Prota, Andrea
- title: RC deck - stiffened arch existing bridges: simulated design and structural analysis
- date: 2022-03-03
- words: 4646
- flesch: 61
- summary: 33/2022 RC Deck - Stiffened Arch Existing Bridges D�� E�� /� ����P I� �� �� P ��P ��P ��P ��P ��P ��P ��P ��P ��P ��P 3� 3� 3� 3� 3� 3� 3� 3� 3� 3�� 3�� D �P �P �P ���P / 0DLQ�EHDPV 6HFRQGDU\�EHDPV Figure 2. a) Longitudinal view of the deck arch bridge assumed as case study; b) Plan view of the deck. point of about 600 MPa and was classified as semi- hard or hard steel. Due to the development of new building tech- niques and high - performance materials, the diffusion of RC arch bridges increased considerably.
- keywords: 0rp �; 1hj �; actions; allowable; analysis; arch; arch bridges; beams; bending; bridge; case; compression; concrete; conditions; cross; deck; deck arch; design; elements; figure; fp �; loading; loads; maillart; main; maximum; model; moment; mpa; order; piers; qj �; reinforcement; schemes; section; shear; simple; simulated; steel; stresses; structural; study; time; type; typology; verifications; working; � ehdpv; � fr
- versions: original; plain text
- app01-7980
- author: Dacić, Amina ; Fenyvesi, Oliver
- title: Limitations of life cycle assessment of green concretes - a state-of-the-art review
- date: 2022-03-03
- words: 5196
- flesch: 53
- summary: [10] J. Turk, Z. Cotič, A. Mladenovič, et al. Environmental evaluation of green concretes versus conventional concrete by means of LCA. Keywords: CO2 uptake, environmental impact, functional unit, green concrete, inventory allocation, life cycle assessment.
- keywords: //doi.org/10.1016; aggregate; allocation; assessment; building; carbonation; case; cdw; cement; co2; concrete; considered; construction; consumption; conventional; countries; cycle; cycle assessment; demolition; development; different; emissions; energy; environmental; functional; green; hand; https; impact; industry; inventory; journal; lca; life; life cycle; management; materials; methods; natural; performance; phase; primary; proceedings; process; production; products; rac; recycled; recycling; researches; resources; results; sense; significant; strength; sustainable; total; transportation; unit; uptake; use; volume; waste
- versions: original; plain text
- app01-7981
- author: Dela Cruz, Rhem Leoric Cantos ; Roriguez, Leah Monica Alaurin ; Tiongco, Emmanuel Josh Yambing; Yulas, Khim Denize Asilo ; Ongpeng, Jason Maximino
- title: Effect of superplasticizer on the strength of fly ash based geopolymer concrete
- date: 2022-03-03
- words: 3374
- flesch: 56
- summary: A research conducted by [9] presented the different properties of a fly ash based geopolymer concrete and concluded that fly ash based geopolymer concrete has a com- pressive strength that is of high quality and can be used for construction purposes, and that its elasticity is similar to that of OPC concrete, has excellent re- sistance against sulfate and acid, and undergoes min- imal creep and drying shrinkage. Keywords: Alkali activators, color detection, fly ash based geopolymer concrete, MATLAB, poly- carboxylate based superplasticizer, ultrasonic pulse velocity test.
- keywords: activator; alkali; ash; calcium; cement; class; color; compressive; concrete; construction; design; development; effect; engineering; figure; fly; fly ash; geopolymer; geopolymer concrete; gpc; high; https; journal; materials; mix; mixture; naoh; production; properties; pulse; research; samples; specimens; strain; strength; study; superplasticizer; table; test; ultrasonic; velocity; water; workability
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- app01-7982
- author: Di Girolamo, Luca ; Ausiello, Gigliola ; Russo, Gianpiero ; Marone, Gabriella
- title: High thermal conductivity concrete for energy piles
- date: 2022-03-03
- words: 5351
- flesch: 53
- summary: In this technology, differently from conven- tional ground heat exchangers made by one or more U-shaped plastic absorber pile inserted in aăborehole, GEPs use thermal conductivity and thermal storage capacity of concrete because high-density polyethy- lene plastic pipes are installed directly in piles struc- tures before concrete casting. The target is to analyse the effects of thermal conductivity increasing of concrete on energy and mechanical performances of GEPs.
- keywords: //doi.org/10.1016; acta; aggregate; axial; building; capacity; case; cement; circuit; compactness; concrete; concrete thermal; conductivity; cooling; density; design; different; effects; energy; engineering; fact; fibers; figure; fluid; foundation; geothermal; geps; greater; ground; heat; heating; high; https; improvement; increase; journal; kim; load; low; materials; mechanical; mechanism; microporosity; mix; performance; pile; pipes; primary; properties; range; ratio; renewable; resistance; russo; scc; soil; steel; structural; systems; technology; temperature; terms; thermal; thermal conductivity; thermo; transfer; use; values; water
- versions: original; plain text
- app01-7988
- author: Dooms, Bram ; Vrijders, Jeroen
- title: Circular concrete: validating new technologies in the lab and on-site
- date: 2022-03-03
- words: 3649
- flesch: 53
- summary: Keywords: Carbonatation, concrete recycling, pilot projects, recycled concrete aggregates (RCA), supplementary cementitious materials. A clear influence can be observed of de total re- placement of natural aggregates with the treated samples.
- keywords: accordance; aggregates; alternative; binders; carbonation; cement; cementitious; combination; concrete; days; fraction; materials; maximum; mechanical; mixtures; mortar; natural; properties; recycled; reference; replacement; resistance; results; sample; sand; strength; supplementary; table; technologies; technology; type; waste; water
- versions: original; plain text
- app01-7989
- author: Falikman, Vyacheslav Ruvimovich ; Ilyin, Dmitry Anatolievich; Stepanova, Valentina Fedorovna
- title: Advanced hybrid nonmetallic composite reinforcement for concrete structures
- date: 2022-03-03
- words: 3840
- flesch: 58
- summary: Concrete beam reinforcement diagram 3.1. HCR can increase the stiffness of concrete beams by 15 % and crack resistance by 12 % in comparison with glass composite reinforcement.
- keywords: acc−k; alkaline; bars; beams; binder; carbon; composite; composite reinforcement; concrete; cracks; durability; elasticity; environment; epoxy; experimental; exposure; fibers; figure; frpr; gfrp; glass; gost; gpa; hcr; high; hybrid; increase; load; material; medium; modulus; mpa; polymer; properties; reinforcement; research; resistance; results; samples; solution; strain; strength; structures; table; tensile; tension; tests; value
- versions: original; plain text
- app01-7990
- author: Falliano, Devid ; Quattrocchi, Salvatore ; De Domenico, Dario ; Ricciardi, Giuseppe ; Gugliandolo, Ernesto
- title: Critical assessment of CO2 emission of different concretes: foamed, lightweight aggregate, recycled and ordinary concrete
- date: 2022-03-03
- words: 4540
- flesch: 52
- summary: Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague CRITICAL ASSESSMENT OF CO2 EMISSION OF DIFFERENT CONCRETES: FOAMED, LIGHTWEIGHT AGGREGATE, RECYCLED AND ORDINARY CONCRETE Devid Fallianoa, ∗, Salvatore Quattrocchib, Dario De Domenicob, Giuseppe Ricciardib, Ernesto Gugliandoloc a Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, Corso Duca degli Abruzzi, 24, Turin 10129, Italy b Department of Engineering, University of Messina, Contrada Di Dio, Messina 98166, Italy c G. Gugliandolo s.r.l., Via Galileo Galilei, Messina 98100, Italy ∗ corresponding author: devid.falliano@polito.it Abstract. Concrete is one of the most widely used construction materials and is thus primarily responsible for CO2 emission.
- keywords: //doi.org/10.1016; aggregates; ash; building; cement; classes; clay; clinker; co2; co2 emission; comparison; compressive; concrete; construction; densities; density; designs; different; domenico; emission; engineering; environmental; experimental; falliano; fcs; figure; fly; foamed; foamed concrete; https; industry; lacs; lightweight; literature; lower; materials; mechanical; mix; mixes; ocs; ordinary; portland; preparation; production; properties; range; recycled; related; special; specimens; strength; study; values
- versions: original; plain text
- app01-7991
- author: Feldrappe, Volkert ; Haufe, Johannes ; Ehrenberg, Andreas ; Vollpracht, Anya ; Matschei, Thomas
- title: A new performance test to evaluate the sulfate resistance of concrete by tensile strength measurements
- date: 2022-03-03
- words: 4070
- flesch: 57
- summary: Influence of sulfate solution concentration on the formation of gypsum in sulfate resistance test specimen. Concrete test specimens acc.
- keywords: ash; astm; attack; beton; binders; cement; ceq; concentration; concrete; conditions; content; damage; days; design; development; different; evaluation; experimental; fib; figure; fine; fly; ftm; germany; high; influencing; method; new; parameters; performance; possible; practical; procedure; project; relative; research; resistance; results; solution; specimens; statistical; storage; strength; sulfate; sulfate resistance; table; tensile; tensile strength; test; testing; values; von; zum
- versions: original; plain text
- app01-7992
- author: Fernandes, Bruno ; Carré, Hélène ; Mindeguia, Jean-Christophe ; Perlot, Céline ; La Borderie, Christian
- title: Fire spalling sensitivity of concrete made with recycled concrete aggregates (RCA)
- date: 2022-03-03
- words: 3853
- flesch: 66
- summary: Inspection after fire spalling test Different analyses were done after the fire spalling tests. To this, uniaxial spalling tests were carried out on of ordinary concrete samples con- taining different RCA (coarse aggregates) replace- ment rates (0%, 10%, 20%, 40%, 70% and 100%).
- keywords: absorption; aggregates; behaviour; concrete; content; curve; depth; different; digital; events; experimental; figure; fire; heating; higher; increase; influence; iso; load; lower; mechanical; mindeguia; mixes; permeability; photogrammetry; presents; rate; rca; recycled; replacement; results; risk; samples; sensibility; spalling; strength; structures; table; temperature; test; thermal; time; volume; water
- versions: original; plain text
- app01-7993
- author: Michelini, Elena ; Ferretti, Daniele; Sirico, Alice ; Cerioni, Roberto
- title: Experimental investigation on the mechanical behaviour of AAC blocks for sustainable concrete masonry
- date: 2022-03-03
- words: 4421
- flesch: 52
- summary: However, minimum mechanical properties should be guaranteed also for lower density blocks, so to ensure adequate structural performances and the compliance with durability requirements (i.e. limiting crack for- mation in infills and claddings). On the contrary, the major advantages of low density blocks are re- lated to energy savings during the use phase of the building life cycle, which should be somehow taken into account.
- keywords: aac; aerated; analytical; autoclaved; available; blocks; buildings; case; cement; collected; compressive; compressive strength; concrete; conductivity; construction; content; corresponding; cubes; curve; data; density; determination; different; dry; energy; engineering; equal; experimental; ferretti; figure; flexural; fracture; literature; load; loading; lower; masonry; materials; mechanical; moisture; nominal; oven; process; production; properties; relation; rilem; samples; specimens; standard; strength; sustainable; table; tensile; tests; thermal; values; work
- versions: original; plain text
- app01-7994
- author: Fu, Qiuni ; Yanb, Libo ; Kasal, Bohumil
- title: Bending behavior of adhesively-bonded engineered wood-concrete composite decks
- date: 2022-03-03
- words: 3470
- flesch: 61
- summary: Specimen preparation When the concrete was cured for 28 days, the con- crete surfaces were cleaned and glued to shaped wood decks with wood decks on the top for the first 3 days. Four-point bending tests were conducted on five medium-sized (i.e., 2300 mm in length and 215 mm in width) engineered timber (laminated veneer lumber (LVL) and cross-laminated timber (CLT)) - concrete (wood chip concrete and plain concrete) composite decks.
- keywords: adhesive; authors; behavior; bending; chip; clt; composite; concrete; connection; construction; decks; deflection; ei)ef; elastic; engineered; epoxy; experimental; failure; figure; flexibility; glued; gpa; higher; https; layers; load; lvl; materials; mechanical; method; modulus; mpa; pur; ref; rigid; section; shear; slip; span; specimens; stiffness; structural; study; table; tcc; timber; wcc; wood
- versions: original; plain text
- app01-7995
- author: Fujiyoshi, Kazuo; Ueda, Takao ; Tsukagoshi, Masayuki
- title: Fundamental properties and durability of slope protection spray mortar reinforced with bamboo fibers
- date: 2022-03-03
- words: 4589
- flesch: 67
- summary: Then, the durabil- ity of bamboo fiber reinforced mortar was tested by spraying on formworks in the actual working spray facilities. The mechanical properties of spray mortar containing bamboo fibers were examined under cyclic wet and dry conditions along with its resistance against freezing and thawing by a spray test.
- keywords: adhesion; air; ash; b+fa; b+v; bamboo; bamboo fibers; compositions; compressive; concrete; conditions; curing; cycles; days; density; dry; exposure; fibers; figure; fine; fly; freeze; freezing; laboratory; material; mixed; mixing; modulus; mortar; porosity; properties; rate; resistance; results; rock; specimens; spray; sprayed; spraying; strength; surfaces; test; thaw; vinylon; water; wet
- versions: original; plain text
- app01-7997
- author: Gruhler, Karin ; Schiller, Georg
- title: Energy flows along the production and use of secondary materials with a special focus on concrete
- date: 2022-03-03
- words: 3817
- flesch: 45
- summary: For all of these, we energeti- cally investigated the paths from demolition material to a new application variant in building construction, civil engineering or landscaping. Demolition materials are quantities that are available in a certain quality after the demolition of a building (e.g. broken concrete without coarse adhesion).
- keywords: account; aggregates; application; approach; building; concrete; conservation; construction; demolition; demolition material; different; energy; energy expenditure; expenditure; foundation; gruhler; high; important; material; new; primary; processing; production; products; quality; recycled; recycling; regard; requirements; resource; results; road; secondary; secondary material; steps; substitute; system; table; terms; type; use; variant; waste; way
- versions: original; plain text
- app01-7999
- author: Hager, Izabela ; Mróz, Katarzyna ; Tracz, Tomasz ; Kočí, Václav ; Fiala, Lukáš
- title: Equivalent thermal diffusivity of natural and recycled aggregate concrete at temperature up to 350 ⁰C
- date: 2022-03-03
- words: 2603
- flesch: 54
- summary: Thermal diffusivity can be determined (Eq. 1) by directly determining these physical properties by experimental methods or by using an inverse method leading to the determination of D. The unit of thermal diffusivity is [J/kgK], but [mm2/s] or [m2/s] are also used in the literature. Thermal diffusivity was evaluated based on the temperature measurements made on cylindrical samples using so-called inverse tech- nique.
- keywords: aggregates; behaviour; cement; coarse; concrete; content; density; diffusivity; engineering; equivalent; figure; fire; heat; heating; high; higher; inverse; materials; method; mm2; natural; permeability; properties; rac; rate; recycled; results; spalling; strength; temperature; thermal; thermal diffusivity; values; water
- versions: original; plain text
- app01-8000
- author: Henry, Michael ; Opon, Joel
- title: The role of conceptualization in the evaluation of sustainable concrete
- date: 2022-03-03
- words: 4071
- flesch: 47
- summary: Correlation coefficients for sustainability scores between analytical scenarios. dard for concrete sustainability evaluation. This paper explores the role conceptualization plays in the evaluation of concrete material sustainability by analyzing its effects using multicriteria analysis and a sustainability indicator framework to quantify sustainability for concrete materials.
- keywords: 'luhfw �; aggregates; aggregation; analysis; analytical; bfs; conceptual; conceptualization; concrete; development; djjuhjdwlrq �; environmental; evaluation; framework; indicators; iru �; jhrphwulf �; materials; mca; mean; methods; mix; mixes; opc; pillars; process; scenarios; scmi; scores; sustainability; sustainable; table; � e; � f; � frqfhswxdo; � g; � hydoxdwlrq; � olqhdu; � ordglqj; � slooduv; � �
- versions: original; plain text
- app01-8001
- author: Horáková, Anna ; Kohoutková, Alena ; Broukalová, Iva
- title: Utilization of recycled and secondary materials in concrete production - LCA
- date: 2022-03-03
- words: 3802
- flesch: 48
- summary: The paper describes an assessment of concrete in terms of environmental impacts in relation to the utilization of recycled materials. The article includes a short summary of the literature search on evaluation methods for environmental impacts and on recycled and secondary materials.
- keywords: aggregate; ash; assessment; blast; category; cement; comparison; concrete; consumption; decrease; emissions; energy; environmental; example; fly; frame; furnace; impacts; life; materials; mixtures; natural; plastic; production; raw; recycled; replacement; results; secondary; significant; slag; strength; structure; studies; study; table; terms; transport; use; utilization; variants; waste
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- app01-8003
- author: Chandeng, Latda ; Meesak, Thanawat ; Tuakta, Chakrapan ; Wisuthseriwong, Tidarut ; Ueda, Tamon ; Jongprateep, Oratai
- title: Natural fiber-reinforced light-weight cement blocks prepared from waste for sustainable development
- date: 2022-03-03
- words: 4250
- flesch: 51
- summary: Production of cement blocks, however, generally requires Ordinary Portland Cement (OPC) which creates harmful environmental impacts. In this study, the mixture containing synthesized cement-like material, OPC, rice husk ash, and jute fibers were mixed with water at the W/B ratios rang- ing from 0.8 to 1.1, and cast into cement blocks.
- keywords: //doi.org/10.1016; addition; aluminate; alumino; ash; binder; blocks; c3a; calcium; carbon; cement; cement blocks; cockleshells; combustion; components; compressive; concrete; construction; content; density; diffraction; eggshells; engineering; ferrite; fiber; figure; high; https; husk; industrial; journal; jute; light; lightweight; like; low; materials; natural; opc; optimal; phase; production; properties; ratio; ray; reinforcement; rha; rice; silicate; strength; study; synthesis; synthesized; technique; thailand; tri; waste; water; weight; weight cement; wt%
- versions: original; plain text
- app01-8005
- author: Charpin, Laurent ; Haelewyn, Jessica ; El Idrissi, Anass Cherki ; Niepceron, Julien; Masson, Benoît ; Toulemonde, Charles ; Boulant, Guillaume; Mathieu, Jean-Philippe ; Hamon, François ; Michel-Ponnelle, Sylvie ; Hénault, Jean-Marie ; Taillade, Frédéric ; Adia, Jean-Luc ; Escoffier, Florian
- title: Predicting leakage of the VERCORS mock-up and concrete containment buildings - a digital twin approach
- date: 2022-03-03
- words: 4039
- flesch: 58
- summary: Keywords: Air leakage, concrete containment building, creep, drying, shrinkage. VERCORS concrete has been thoroughly charac- terized in EDF and national and European partner labs to achieve a consistent knowledge of elastic prop- erties, strength, drying properties, delayed strains at different ages and different temperatures.
- keywords: air; available; behaviour; benchmark; boundary; building; cables; calibration; ccbs; charpin; comparison; computation; concrete; conditions; containment; creep; data; different; digital; drying; edf; figure; france; humidity; leakage; leaks; local; measured; measurements; mechanical; mock; model; moisture; monitoring; parameters; prediction; present; prestress; rate; real; results; saturation; sensors; set; shrinkage; strain; temperature; test; thermal; tightness; twin; vercors; wall; works
- versions: original; plain text
- app01-8007
- author: Chundupalle, Sashidhar ; Seeri, Nirmala ; Veera, Sudarsana Reddy ; Nelluri, Venkata Ramana
- title: Strength and durability characteristics of self compacting concrete (SCC) with recycled aggregate and manufactured sand
- date: 2022-03-03
- words: 3718
- flesch: 58
- summary: Further, it can also be noted that the compressive strength of 100% NCA is maximum and the compressive strength decreases with increasing recycled coarse aggregate at both 7 and 28 days. The investigations on self compacting concrete (SCC) with recycled coarse aggregate and Man- ufactured sand (M-Sand) were performed in this current study.
- keywords: aggregate; characteristics; coarse; coarse aggregate; compressive; compressive strength; concrete; days; decrease; engineering; fine; fine aggregate; materials; mixtures; natural; percentage; permeability; properties; recycled; recycled aggregate; reference; replacement; results; samples; sand; scc; self; split; strength; study; table; tensile; test; value; water
- versions: original; plain text
- app01-8008
- author: Insako, Ryo ; Miyoshi, Yuki ; Huynh, Phat Tan ; Ogawa, Yuko ; Kawai, Kenji
- title: Contribution of fly ash to mortar strength development under steam and internal curing
- date: 2022-03-03
- words: 3249
- flesch: 66
- summary: It may indicate that the cement hydration could be promoted by the incorporation of fly ash and more CH was produced in fly ash cement paste compared to the plain cement paste. In addition, the pozzolanic reaction of fly ash was evaluated from the viewpoint of calcium hydroxide consumption by using thermogravimetry and differential thermal analysis as well as the degree of fly ash reaction by using selective dissolution method.
- keywords: age; ages; aggregate; ash; ash reaction; case; cement; compressive; concrete; consumption; content; curing; days; degree; development; figure; fine; fly; fly ash; internal; mortar; ratio; reaction; replacement; roof; specimens; steam; strength; tile; value; waste; water
- versions: original; plain text
- app01-8009
- author: Iravani, Ahmad ; Feldrappe, Volkert ; Ehrenberg, Andreas ; Anders, Steffen
- title: Stability of concrete containing blast-furnace slag following exposure to cyclic elevated temperature
- date: 2022-03-03
- words: 3568
- flesch: 53
- summary: Residual compressive strength Generally, residual compressive strength depends on the maximum temperature during heating. An- other approach is a possible re-hydration tendency of CEM III/A due to the blast-furnace slag and mois- ture uptake in the air between temperature cycles.
- keywords: aggregates; basalt; basaltic; blast; cem; cement; compressive; concrete; cooling; cracks; cycles; cyclic; days; elevated; exposure; figure; flexural; furnace; heating; higher; iii; loss; mass; maximum; mixtures; number; quarzitic; reduction; residual; results; slag; specimens; stability; strength; temperature; thermal; type; water
- versions: original; plain text
- app01-8010
- author: Irico, Sara ; Mutke, Sabine ; Bertola, Federica ; Gastaldi, Daniela; Capelli, Livio; Canonico, Fulvio
- title: Durability of high belite cement as new technical solution for concrete
- date: 2022-03-03
- words: 2456
- flesch: 56
- summary: The results show that the self-compacting concrete with the high belite cement is able to reach sufficient strengths already after 1 day of hydration, with a low heat development and improved durability properties, compared to CEM I. Keywords: Belitic cement, low heat cement, low heat concrete. Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague DURABILITY OF HIGH BELITE CEMENT AS NEW TECHNICAL SOLUTION FOR CONCRETE Sara Iricoa, ∗, Sabine Mutkea, Federica Bertolab, Daniela Gastaldib, Livio Capellib, Fulvio Canonicoa, b a Wilhelm Dyckerhoff Institut for Building Materials Technology, Dyckerhoff GmbH, Dyckerhoffstraße 7, 65203 Wiesbaden, Germany b Buzzi Unicem Innovation Lab and Technology (Built), Via Restano 3, 13100, Vercelli, Italy ∗ corresponding author: sara.irico@dyckerhoff.com Abstract.
- keywords: attack; belite; carbonation; cem; cement; chloride; co2; compressive; concrete; content; cycles; days; development; durability; figure; freeze; hbc; heat; high; higher; hydration; iii; low; lower; migration; performance; resistance; results; scc; strength; sulfate; technology; thaw
- versions: original; plain text
- app01-8011
- author: Ismail, Ruqayyah ; Muhammad Rashid, Raizal Saifulnaz ; Ahmad Zakwan, Fariz Aswan ; Ahmad, Hazrina; Hejazi, Farzad
- title: Axial behaviour of strengthened circular hollow reinforced concrete column with CFRP partial confinement
- date: 2022-03-03
- words: 3220
- flesch: 61
- summary: The first series is referred to the column specimen without CFRP confinement while the second series referred to the specimen with CFRP partial confinement. Therefore, this study investigates the effect of using partial CFRP confinement in a strengthened circular hollow reinforced concrete column.
- keywords: axial; behaviour; cfrp; cfrp confinement; chrcc; circular; column; concrete; confinement; displacement; engineering; experimental; figure; hollow; load; malaysia; material; mpa; partial; partial cfrp; specimens; strain; strength; stress; study; transverse; unconfined; universiti; vv �; ɛɛ �; ͳ;ϭϳͳ �; � $[ldo; � 'lvsodfhphqw; � yv; � ;d; � �
- versions: original; plain text
- app01-8012
- author: Ito, Shinya ; Iyoda, Takeshi
- title: Chloride ion penetration behaviour in concrete containing an expansive additive and a calcium-aluminate-based additive
- date: 2022-03-03
- words: 3874
- flesch: 57
- summary: The results suggested that the penetration behaviour of chloride ions inside the hardened bodies and the distribution of free chloride ions differed in the con- crete formulations, and that the values calculated with Fick’s diffusion equations may not necessarily reproduce the actual infiltration behaviour of chlo- ride ions, except for the N sample. The effect of the material characteristics on the infiltration behaviour of chloride ions in concrete containing a combination of an expansive additive and a calcium-aluminate-based additive has been investigated.
- keywords: addition; additive; behaviour; ca2; cement; characteristics; chloride; chloride ions; combination; concrete; continuous; depth; diffusion; effect; expansive; expansive additive; fick; figure; friedel; hydrate; immersion; immobilisation; ions; material; n+ca2; network; penetration; permeation; pore; results; salt; sample; surface; table; test; total
- versions: original; plain text
- app01-8014
- author: Iyoda, Takeshi ; Matsuda, Nobuhiro
- title: Study for re-ASR behaviour of recycled concrete using ASR generated concrete and considering countermeasure technology
- date: 2022-03-03
- words: 2832
- flesch: 63
- summary: The use of this concrete block as recycled aggregate is very important in terms of sustainability. Therefore, in this study, recycled aggregate was made from raw concrete where ASR occurred, after that recycled concrete was manufactured using this aggregate.
- keywords: addition; age; aggregate; alkali; asr; carbonation; coarse; compressive; concrete; expansion; figure; harmless; modified; mortar; naoh; raw; reactive; recycled; recycled aggregate; results; specimens; strength; table; test; weeks
- versions: original; plain text
- app01-8015
- author: Ji, Xiangnan; Takasu, Koji ; Koyamada, Hidehiro; Suyama, Hiroki
- title: A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring
- date: 2022-03-03
- words: 3837
- flesch: 67
- summary: In the case of B ash, the compres- sive strength was higher when mixed with D than when mixed with S, and the results were opposite to those of A and C ash. Pore structure Figure 10 shows the change in pore size distribution of A ash 20in, 120out, B ash and C ash 20in with time, divided into four ranges: 0.003µm - 0.05µm, 0.05µm - 0.5µm, 0.5µm - 5µm, 5µm - 100µm.
- keywords: addition; age; ash; change; compressive; concrete; days; dry; evaluation; experiment; figure; fly; materials; mixed; neutralization; pore; range; rate; shrinkage; slump; slurry; strength; sustainability; table; time; value; volume; − −
- versions: original; plain text
- app01-8016
- author: Kanazawa, Takeru
- title: Lower bound analysis for shear assessment of full-scale RC girders subjected to axial tension
- date: 2022-03-03
- words: 3251
- flesch: 61
- summary: V − Vc − Fd − Fw − b ! Axial tension force exerted as a result of a temperature change or shrinkage can cause the collapse of RC structural members.
- keywords: analysis; analytical; assessment; axial; beams; compatibility; concrete; constraints; crack; critical; depth; design; equation; equilibrium; figure; girders; longitudinal; lower; mcft; members; predictions; reinforcement; results; scale; shear; solutions; strain; strength; structural; tension; upper; vana; variables; vexp; web; yield
- versions: original; plain text
- app01-8017
- author: Kelley, Shana
- title: Expansion of sustainability in the ACI 318 building code
- date: 2022-03-03
- words: 2744
- flesch: 39
- summary: Introduction Historically, concrete building codes have focused mainly on provisions related to strength, serviceabil- ity, stability, and durability of the structure. 2. Concrete sustainability at ACI and in the ACI building code As the focus on environmental sustainability of build- ing materials has increased in recent years, the Amer- ican Concrete Institute (ACI) has expanded the committees, standards, and publications related to concrete sustainability.
- keywords: 318; aci; american; building; building code; carbon; cement; code; concrete; construction; cycle; design; environmental; epds; expansion; group; impacts; institute; life; materials; new; product; provisions; section; structure; subcommittee; sustainability; sustainable; task; use
- versions: original; plain text
- app01-8021
- author: Lajevardi, Seyed Mohammad Sadegh ; Lourenço, Paulo B. ; Sousa, Hélder S. ; Matos, José C.
- title: Railway reinforced concrete infrastructure life management and sustainability index
- date: 2022-03-03
- words: 3182
- flesch: 50
- summary: Keywords: Life management, maintenance planing, sustainability index. [3] MCDM PSI Sustainability index for highway construction projects [4] MCDM AHP Development of sustainability assessment index for machine tools [5] MCDM AHP Development of a multidisciplinary approach to compute sustainability index for manufacturing plants -
- keywords: ahp; analysis; approach; assessment; bridge; cities; climate; component; concrete; cost; cycle; data; decision; deck; defect; development; element; engineering; environment; failure; features; follows; framework; index; infrastructure; inspection; life; maintenance; making; management; mcdm; method; model; number; operation; parameters; probability; railway; research; sustainability; sustainability index; sustainable; system; table; track; value
- versions: original; plain text
- app01-8023
- author: Lin, Wei-Ting ; Cheng, An ; Korniejenko, Kinga ; Łach, Michał
- title: Influence on permeability and pore structure of polyolefin fiber reinforced concrete containing slag
- date: 2022-03-03
- words: 4172
- flesch: 57
- summary: Compressive strength development curves of polyolefin fiber concrete without slag. Compressive strength Figures 1 and 2 presents the compressive strength of polyolefin fiber concrete made with and without slag at the age of 7, 28, 56 and 91 days, respec- tively.
- keywords: absorption; addition; age; cement; compressive; compressive strength; concrete; concrete specimens; control; cracks; cumulative; days; effect; fiber; fiber concrete; figure; higher; https; hydration; inclusion; increase; interfacial; intrusion; lower; materials; mechanical; mercury; pastes; permeability; polyolefin; polyolefin fiber; pore; porosity; properties; relationship; results; sem; size; slag; specimens; strength; structures; test; transition; water; zone
- versions: original; plain text
- app01-8024
- author: Lin, Hangwei ; Takasu, Koji ; Koyamada, Hidehiro ; Suyama, Hiroki
- title: Correlation of porosity and properties of recycled fine aggregate concrete with fly ash
- date: 2022-03-03
- words: 3602
- flesch: 64
- summary: Correlation graph of compressive strength and cumulative pore volume might be predicted with given W/B, days and FA of the concrete or none given and drying shrinkage might be predicted with given FA. Figure 5 showed the influence of recycled aggregate replace- ment ratio on cumulative pore volume with water to binder ratio 0.55.
- keywords: aggregate; ash; compressive; compressive strength; concrete; correlation; cumulative; days; diameter; effect; figure; fine; fly; incorporating; interval; mixes; pore; porosity; properties; ratio; recycled; replacement; series; shrinkage; strength; volume
- versions: original; plain text
- app01-8025
- author: Lollini, Federica
- title: Extent of corrosion damage for RC structures exposed to chloride-bearing environment
- date: 2022-03-03
- words: 4196
- flesch: 48
- summary: The probability that corro- sion initiated, pcorr , corresponds to the probability of occurrence that the variable Clth is equal to the con- sidered value of chloride content, Ccl. The inspection should be aimed at estimating if, both at the time of inspection and at the end of the designed lifetime, the reinforcement is still passive, i.e. corrosion has not initiated since carbonation or a critical amount of chlorides has not reached the steel surface, or the reinforcement is cor- roding but the propagation is in the early stages, e.g. concrete cover is not cracked and reduction in cross section of rebars is negligible [6].
- keywords: approaches; bars; chloride; chloride content; concrete; content; corroding; corroding reinforcement; corrosion; cover; critical; damage; depth; design; different; distribution; equal; extent; figure; inspection; life; mass; measurements; parameters; pcorr; probabilistic; probability; profile; reinforcement; repair; results; service; steel; structures; table; time; value
- versions: original; plain text
- app01-8026
- author: Mancinelli, Oscar ; Fantilli, Alessandro Pasquale ; Chiaia, Bernardino
- title: Comparing the environmental performances of new and renovated school buildings
- date: 2022-03-03
- words: 4449
- flesch: 56
- summary: Building materials are aggregated into three categories, namely Skin, Space Plan, and Structure, following the layered division (the so called 352 vol. Embodied carbon of building materials grouped into macro-layers: (a) total amount; (b) amount per unit of gross building area (u.a.); (c) amount per student.
- keywords: analysis; area; assessment; building; carbon; chiaia; co2; components; concrete; construction; cycle; data; design; emissions; energy; envelope; environmental; figure; footprint; global; gross; hand; heating; higher; impact; italian; lca; life; lifespan; lower; materials; modules; needs; new; number; old; overall; performances; possible; production; refurbishment; renovation; results; rules; school; school building; storey; structure; studies; study; sustainability; system; thermal; timber; total; unit; use; waste; wood; years
- versions: original; plain text
- app01-8027
- author: Mariaková, Diana ; Fořtová, Kristina ; Jirkalová, Zuzana ; Pavlů, Tereza ; Hájek, Petr
- title: High-performance concrete containing waste vitrified tiles
- date: 2022-03-03
- words: 3535
- flesch: 64
- summary: The pozzolanic properties of used waste material can have a positive effect on the resulting strength of concrete samples. Amount of cement, nat- ural aggregate, microsilica and water remains same in the mixtures, the variable segment is the amount of used waste vitrified tiles as a silica powder replace- ment.
- keywords: absorption; aggregate; blocks; compressive; compressive strength; concrete; construction; cycles; czech; flexural; fragments; freeze; high; materials; measured; mixture; performance; powder; properties; ref; reference; replacement; resistance; results; samples; silica; specimens; strength; table; tested; testing; thaw; tiles; use; values; vitrified; waste; water; čsn
- versions: original; plain text
- app01-8028
- author: Matsuka, Takeju ; Suzuki, Mariko ; Matsushita, Haruhiko ; Yokota, Hiroshi ; Sakai, Koji
- title: Properties of concrete using crushed stone powder with various specific surface areas
- date: 2022-03-03
- words: 3333
- flesch: 67
- summary: However, a large amount of crushed stone powder is produced as by-products in the manufacturing process. Unless effective utilization of crushed stone powder is considered, it is not a sufficient measure in terms of sustainability.
- keywords: agent; aggregate; area; cm3; co2; concrete; content; crushed; crushed stone; density; emissions; figure; index; input; japan; mix; modulus; powder; properties; ratio; resource; sand; specific; stone; stone powder; strength; study; surface; sustainability; type; unit; virgin; water
- versions: original; plain text
- app01-8029
- author: Monkman, Sean ; Meyer, Vincent
- title: Sustainable concrete production with recycled concrete wash water beneficiated with CO2
- date: 2022-03-03
- words: 4565
- flesch: 62
- summary: Carbon uptake in wash water solids and solution pH with treatment time of wash water slurry treated with CO2. 56 days with the exception of the batches containing increased plasticizer (PCE) which were assessed only at 7 and 28 days. Seven batches of concrete were produced and compared: a reference mix, two batches with untreated wash water and four batches with CO2 treated wash water.
- keywords: addition; admixture; approach; batches; binder; carbon; carbon dioxide; case; cement; clinker; co2; compressive; concrete; concrete wash; content; control; ctp; days; dioxide; dispersant; efficiency; hours; impacts; improved; limestone; mass; mineralized; minutes; mix; mix water; mpa; pce; performance; powder; production; relative; slump; slurry; solids; strength; sustainable; table; time; treatment; untreated; uptake; use; utilization; wash; wash water; water; water slurry; water solids; workability
- versions: original; plain text
- app01-8032
- author: Ralli, Zoi G. ; Pantazopoulou, Stavroula J. ; Papangelakis, Vladimiros G.
- title: Microstructural characterization of high-performance steel fiber reinforced geopolymer concrete
- date: 2022-03-03
- words: 4524
- flesch: 51
- summary: Such materials are geopolymer binders, encompassing a variety of industrial wastes in the role of a binder and filler. Geopolymer concrete is a class of novel advanced and sustainable structural materials that hold promise for the future of infrastructure.
- keywords: alkaline; aluminosilicate; analysis; binders; cao; cement; characterization; chemical; compressive; concrete; content; conventional; diameter; effect; ffa; fiber; fibres; figure; final; fly; fresh; fume; geopolymer; geopolymer concrete; geopolymerization; ggbfs; high; hpfrgc; images; main; materials; microstructure; mineral; mineralogy; minutes; mixing; mixtures; mk-750; pantazopoulou; performance; physical; porosity; precursors; presence; production; properties; qemscan; results; sections; setting; sio2; size; slag; source; specimens; steel; strength; studied; study; table; temperature; testing; viscosity; water
- versions: original; plain text
- app01-8034
- author: Nemati Giv, Ali ; Fu, Qiuni ; Yan, Libo ; Kasal, Bohumil
- title: Interfacial bond behavior of adhesively-bonded timber/cast in situ concrete (wet bond process)
- date: 2022-03-03
- words: 3076
- flesch: 59
- summary: The change of failure mode was observed from concrete failure in dry bond to debonding at interface in wet bond which was an ev- idence in reduction of wet bond shear strength. 402 vol. Keywords: Cast-in-situ concrete, dry bond, shear strength, timber-concrete composite structures, wet bond.
- keywords: adhesive; area; blocks; bond; cast; clt; composite; concrete; construction; curing; days; double; dry; epoxy; failure; figure; fresh; glue; https; interface; interfacial; joint; journal; lap; mpa; polyurethane; shear; situ; specimens; strength; system; table; test; timber; wet; wet bond; wood; yan
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- app01-8036
- author: Redaelli, Dario ; Moix, Jonathan; Muresan, Alex ; Brütting, Jan ; Fivet, Corentin
- title: Prestressed ultra-high performance concrete (UHPC) beams for reusable structural systems: design and testing
- date: 2022-03-03
- words: 3644
- flesch: 54
- summary: 33/2022 Prestressed UHPC Beams VR MR EI Weight [kN] MRd Geometric and mechanical properties of UHPC beams.
- keywords: average; beams; building; concrete; construction; consumption; crack; design; environmental; experimental; failure; figure; force; glue; high; knm; load; materials; measured; mechanical; mm2; modeling; modules; new; openings; performance; prestressed; properties; redaelli; results; shear; slab; strength; structural; swiss; system; table; tensile; test; testing; timber; transversal; uhpc; ultra; values; way; web
- versions: original; plain text
- app01-8037
- author: Roik, Matthias ; Tietze, Matthias ; Kahnt, Alexander
- title: A revival in façades: Textile reinforced concrete panels are light, safe and aesthetically pleasing
- date: 2022-03-03
- words: 4170
- flesch: 58
- summary: Keywords: Building innovation, carbon reinforced concrete façades, fixings, new materials, textile reinforced concrete. Storey-high façade element with new fix- ing system for carbon reinforced concrete.
- keywords: additional; anchorage; anchors; angles; bearing; building; capacity; carbon; carbon concrete; case; components; concrete; cone; construction; corrosion; curtain; depth; design; different; dresden; elements; failure; façade; figure; fixings; germany; influence; large; load; material; minimum; new; panels; proceedings; properties; protection; reinforced; reinforcement; research; resistance; results; shear; slabs; splitting; steel; structures; sufficient; suitable; system; tensile; test; textile; thickness; thin; use; wall
- versions: original; plain text
- app01-8038
- author: Rønning, Anne ; Prestrud, Kjersti ; Saxegård, Simon ; Haave, Simen S. ; Lysberg, Magne
- title: How design concepts influence carbon footprints of load bearing structures
- date: 2022-03-03
- words: 4343
- flesch: 58
- summary: And even when assessing a load-bearing structure and not the whole building, a holistic approach is vital and one need to reflect on how the load-bearing structure will affect other activ- ities’potential GHG emissions during the service life to ensure design for low GHG emissions. GHG emissions were calculated based on the same type of means of transport as stated in the EPD.
- keywords: adaptability; assessment; beams; bearing; buildings; calculations; carbon; climate; clt; columns; concrete; construction; core; cycle; data; design; different; elements; emissions; environmental; epd; fire; fossil; foundation; generator; ghg; ghg emissions; hollow; kristiansand; life; load; materials; mixed; norway; office; performance; pre; products; ready; reinforcement; requirements; slabs; solutions; steel; storeys; structures; study; table; tonne; transport; trondheim; use; wood
- versions: original; plain text
- app01-8040
- author: Scope, Christoph ; Guenther, Edeltraud ; Mielecke, Torsten ; Schuetz, Julia ; Muendecke, Eric ; Schultze, Konstantin
- title: Life cycle assessment of carbon concrete composites: a circular economy path beyond climate mitigation?
- date: 2022-03-03
- words: 4455
- flesch: 61
- summary: 33/2022 LCA of Carbon Concrete Composites ��� �� � � �� �� �� )XOO�OLIH�F\FOH NJ�&2�HT�Pð ¨�9DULDQW�$��%���ZDOO� ¨�9DULDQW�$��%� ¨�9DULDQW�%��%� ¨�6FHQDULR����$��%�� ¨�6FHQDULR����$��%�� ¨�6FHQDULR����$��%�� ¨�6FHQDULR����$��%�� ¨�6HQVLWLYLW\�6WHHO�UHLQI���$��%�� ¨�6HQVLWLYLW\�&DUERQ�ILEHU��$��%�� Figure 5. Sen- sitivity analyses tested for data uncertainty (orange bars): a dataset for steel reinforcement with -50% lower and a dataset for carbon fibers with +50% higher carbon emissions is chosen.
- keywords: assessment; base; building; c25/30; carbon; ccc; ceiling; circular; co2eq; composites; concrete; construction; cradle; cycle; data; depletion; design; e.g.; economy; emissions; energy; environmental; fabric; façade; fiber; figure; german; illustration; impact; iru �; kg co2eq; lca; life; lower; manufacturing; materials; pan; production; qdwxudo �; recycled; recycling; reinforcement; research; results; sandwich; scenario; slab; src; stage; steel; strategies; study; sustainability; sustainable; system; textile; unit; variant; wall; � jdv; � �
- versions: original; plain text
- app01-8043
- author: Xochicale Cortés, Abel Noé
- title: Rational and sustainable procedure in the design of bridges using pre-stressed concrete beams a theoretical practical method
- date: 2022-03-03
- words: 2896
- flesch: 61
- summary: Relationship between optimization and sustainability Recently has emerged the concept of the sustainable design of structures, which by applying it to pre- stressed concrete girder bridges, could be synthesized in the use of 1. minimum number of girders, 2. optimum thickness of slab over girders, 3. minimum number of columns in the case of piers 4. minimum number of spans in the bridge, which is achieved using the girders to its maximum perfor- mance. This formulation perfectly agrees with the results given in Figure 4 for the condition of single spans girder bridges.
- keywords: aashto; beams; bridge; concept; concrete; constant; consumption; cost; design; factor; figure; girders; greater; kxoc; live; materials; maximum; mpa; number; optimal; optimization; optimum; pre; sections; slab; spacing; span; strength; stressed; study; superstructure; sustainability; sustainable; type; use; value; width
- versions: original; plain text
- app01-8044
- author: Vios, Nicole Alexis Kwan ; Henry, Michael Ward ; Opon, Joel Galupo
- title: Quantifying uncertainties in the sustainability evaluation of concrete materials considering regional characteristics in Japan
- date: 2022-03-03
- words: 3850
- flesch: 49
- summary: Conversion of in-cluster mean z-scores to relative intensities for calculation of weights. effect of methodological uncertainties in the regional context of concrete sustainability evaluation was in- vestigated using uncertainty analysis to understand how these uncertainties influence concrete sustain- ability evaluation results. Indicators for concrete sustainability evaluation.
- keywords: analysis; average; capita; characteristics; cluster; co2; concrete; concrete sustainability; construction; consumption; context; data; different; energy; evaluation; figure; henry; high; indicators; japan; level; material; mean; mix; mixes; opon; prefectures; regional; results; scores; set; sustainability; sustainability evaluation; sustainable; table; total; uncertainties; uncertainty; values; variance; weighting; weights
- versions: original; plain text
- app01-8045
- author: Ventanilla, Mary Grace ; Ongpeng, Jason ; Takahiro , Nishida; Kawaai, Keiyu
- title: Reduction of dissolved oxygen in minimizing corrosion
- date: 2022-03-03
- words: 3465
- flesch: 50
- summary: Materials DO diff.(ppm or mg/L) % Candidate materials from different types of agricultural waste, industrial waste, natural minerals, and green inhibitors.
- keywords: //doi.org/10.1016; aggregates; agricultural; aloe; ash; bagasse; bars; building; candidate; cement; concrete; construction; corrosion; engineering; environment; extract; factors; figure; ginger; https; industrial; journal; level; materials; minerals; natural; oxygen; percentage; permeability; plants; powder; products; properties; ratio; reduction; research; rice; slag; steel; structures; study; table; temperature; waste; water
- versions: original; plain text
- app01-8046
- author: Urbina, Oscar Javier ; Teixeira, Elisabete ; Sousa, Hélder ; Matos, José
- title: Breakthrough of the resemblances and correspondences between resilience and sustainability in civil infrastructures
- date: 2022-03-03
- words: 5075
- flesch: 39
- summary: Consequently, there exists a possibility to create a methodology that examines and assesses four categories of civil infrastructure sustainability: Technical, environmental, social, and economical. 33/2022 Resilience and Sustainability in Civil Infrastructures is limited number of previous studies that integrate them with critical infrastructure sustainability.
- keywords: analysis; approach; aspects; assessment; authors; building; categories; chapter; civil; civil infrastructures; comprehensive; construction; cost; countries; critical; cycle; decision; design; developed; development; different; dimension; economic; energy; environmental; european; events; extreme; impacts; infrastructures; integrated; international; journal; level; life; main; making; method; methodologies; methodology; model; new; paper; performance; points; quantitative; research; resilience; risk; social; society; states; studies; study; sustainability; sustainable; system; technical; terms; time; tools; united; water; world
- versions: original; plain text
- app01-8047
- author: Teixeira, Elisabete Rodrigues ; Camões, Aires ; Branco, Fernando G.
- title: Effect of using biomass fly ash on the concrete sustainability
- date: 2022-03-03
- words: 4107
- flesch: 52
- summary: Based both on the abovementioned context and methodological approach, a quantification and comparison of potential environmental impacts resulting from the production of 1 m3 of concrete was made, using different types of binder and quantities of cement substitution. Based both on the abovementioned con- text and methodological approach, a quantification and comparison of potential environmental impacts resulting from the production of 1 m3 of concrete was made, using different types of binder: i) Portland ce- ment; ii) Portland cement and CFA or/and BFA, iii) Portland cement and CFA and HL; and iv) Portland cement, CFA, BFA and HL.
- keywords: allocation; analysis; ash; assessment; bfa; biomass; categories; cement; cfa; co2; coal; concrete; cycle; declaration; different; effect; energy; engineering; environmental; flows; fly; formulations; impact; indicators; inventory; lca; life; materials; method; mixes; necessary; performance; plant; portland; portugal; portuguese; potential; power; production; ref; results; study; superplasticizer; sustainability; table; transportation; values; water
- versions: original; plain text
- app01-8048
- author: Taylor, Andrew Warren
- title: The status of sustainable concrete codes in the United States
- date: 2022-03-03
- words: 3864
- flesch: 40
- summary: A primary focus of the CLF has been embodied carbon of construction materials, in- cluding the promotion of standardized and verified EPDs, which will allow valid comparisons between various materials and between various suppliers of a given material. A major accomplishment of the CLF has been to foster development of computer software that pro- vides a standardized method for calculating the em- bodied carbon in construction materials.
- keywords: aci; act; alternative; american; building; buy; california; carbon; cement; challenge; city; clean; code; concrete; construction; construction materials; county; design; emissions; engineers; environmental; epds; gas; global; government; greenhouse; gwp; impacts; institute; legislation; limits; local; marin; materials; new; ordinance; organizations; portland; potential; project; regulations; report; state; structural; sustainability; sustainable; table; united; warming; washington
- versions: original; plain text
- app01-8050
- author: Stuerwald, Simone ; Meglin, Ronny ; Kytzia, Susanne ; Gilg, Sabrina
- title: Use of recycled concrete fines in cement and as aggregate
- date: 2022-03-03
- words: 3094
- flesch: 62
- summary: Different samples of laboratory and real crushed concrete fines were collected and examined in relation to various possible applications in accordance with the applicable standards. The research project focused on investigating and optimizing the processing and use of recycled crushed sand 0/4 from concrete demolition waste, as an alternative raw material in the cement and concrete industry.
- keywords: aggregate; building; carbonation; cement; chain; co2; concrete; construction; content; crushed; demolition; figure; fines; l-40; l-70; material; natural; paste; possible; processing; production; properties; quality; raw; real; recycled; recycling; reference; results; samples; sand; strength; substitute; substitution; table; use
- versions: original; plain text
- app01-8051
- author: Stoiber, Nadine ; Hammerl, Mathias ; Kromoser, Benjamin
- title: Environmental assessment of non-metallic reinforcement for concrete structures as an alternative to steel reinforcement
- date: 2022-03-03
- words: 3465
- flesch: 46
- summary: Nev- ertheless, an additional consideration of the perfor- mance, more precisely the tensile strength of 2,100 MPa of CFRP reinforcement as well as the yield strength of 550 MPa of steel reinforcement shows re- sults more on favour of CFRP reinforcement than a sole consideration of the masses as illustrated in Fig- ure 5. Here, the performance (tensile and yield strength) as well as the related densities (7,850 kg/m3 for steel reinforcement, 1,500 kg/m3 for CFRP reinforcement) were consid- ered.
- keywords: adpf; assessment; basalt; bridge; building; carbon; cfrp; comparison; components; concrete; considered; construction; conventional; cradle; cycle; data; environmental; epds; fibre; figure; glass; global; gwp; impact; indicators; lca; life; material; matrix; normalized; pedestrian; performance; polymers; potential; process; product; production; reinforcement; results; shows; stage; steel; strength; structures; system; types; unit; values
- versions: original; plain text
- app01-8052
- author: Stocker, Florian ; Zeman, Oliver ; Schwenn, Michael ; Bergmeister, Konrad
- title: Load transfer mechanism of concrete screws
- date: 2022-03-03
- words: 4965
- flesch: 72
- summary: Even though the market and development for concrete screws has been increasingly rising in recent years, the load transfer mechanism of concrete screws has not yet been fully investigated. Therefore, different tests of concrete screws made of galvanized and stainless steel were performed in concrete C20/25 and C50/60.
- keywords: 7\sh; anchors; behaviour; bond; c20/25; c50/60; concrete; concrete screws; depth; diameter; different; elastic; embedment; failure; figure; galvanized; higher; load; load transfer; main; material; maximum; measured; mechanism; model; results; screws; section; steel; strain; strength; tests; thread; threaded; transfer; type; w\sh �; � ordgvwhs
- versions: original; plain text
- app01-8053
- author: Soldado, Eliana ; Antunes, Ana ; Costa, Hugo ; Carmo, Ricardo ; Júlio, Eduardo
- title: Mechanical and durability performance of cementitious matrices with low cement and different additions
- date: 2022-03-03
- words: 4496
- flesch: 57
- summary: ��� � ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� � � �� �� �� �� �� �� �� %7������������������������������������07 ( ��* 3D � %7�UHI %7����)$ %7��� %7����3R] %7����6ODJ 07�UHI 07����)$ 07�����)$ 07����3R] 07����6ODJ Figure 4. � � � � � �� �� �� ���GD\V ���GD\V '��������P��V� %7�UHI %7����)$ %7��� %7����3R] %7����6ODJ 07�UHI 07����)$ 07�����)$ 07����3R] 07����6ODJ ���GD\V���������������������������GD\V� Figure 8.
- keywords: 6odj; additions; ash; carbonation; cement; chloride; concrete; consistency; days; density; durability; effect; figure; fly; gd\v; higher; k �; matrices; mechanical; mixtures; mortar; mt250; packing; performance; present; properties; reduction; reference; results; shrinkage; slag; strengths; test; water; � p; � plq; � uhi
- versions: original; plain text
- app01-8054
- author: Slánský, Bohuslav ; Zelinka, Pavel ; Čermák, Jan
- title: Unique and innovative technology for sustainable and efficient structural concrete made of 100% recycled aggregate from CDW
- date: 2022-03-03
- words: 3209
- flesch: 56
- summary: This confirmed the high potential of RA concrete for commercial use on construction and development projects. Within the testing, consistency using the slump test was deter- mined over a time horizon of sixty minutes on brick recycled concrete to verify the workability and trans- portability of recycled concrete.
- keywords: aggregate; brick; c25/30; cdw; class; concrete; construction; czech; development; environmental; figure; final; industrial; laboratory; mpa; natural; new; prague; process; production; properties; recycled; republic; results; solution; standard; strength; structural; table; technical; tensile; testing; tests; time; use; water
- versions: original; plain text
- app01-8055
- author: Schwoon, Oliver
- title: Concrete admixtures - sustainable concrete
- date: 2022-03-03
- words: 1962
- flesch: 61
- summary: In an extensive research program, the influence of mix design components e.g. different admixture types, water/binder-ratio on hardened concrete properties like chloride resistance (chloride migration coefficient), sulfate resistance and water conductivity have been tested and analyzed. 2. Investigation and experimental set-up In an extensive research program, the influence of mix design components e.g. different admixture types, water/binder-ratio on hardened concrete prop- erties like chloride resistance (chloride migration co- efficient), sulfate resistance and water conductivity have been tested and analyzed. 2.1.
- keywords: admixtures; chloride; concrete; conductivity; crc; design; durability; figure; influence; mix; reduction; reference; resistance; results; sikacontrol; sulfate; table; test; water
- versions: original; plain text
- app01-8056
- author: Schneiderová Heralová, Renáta ; Hromada, Eduard ; Holcman, Jakub ; Vitásek, Stanislav
- title: Methodology for evaluation of the life cycle of buildings with a focus on the private sector
- date: 2022-03-03
- words: 3767
- flesch: 54
- summary: The quantification of life cycle costs based on relevant input data on the technical parameters of the construction, structural elements and equipment, the time period of incurring the related costs should be an important basis for the decision of the investor, designer and future user of the building also with regard to environmental and social aspects, and in particular the long-term economic consequences. Life cycle costs (LCC) mean in- volving all of the costs deriving from the use of build- ings during their entire life span.
- keywords: acquisition; analysis; building; calculation; construction; costing; costs; current; cycle; cycle costs; data; decisions; design; economic; elements; energy; environmental; equipment; evaluation; gas; individual; infrastructure; investment; key; lcc; level; life; life cycle; maintenance; maintenance costs; methodology; model; monolith; operation; options; parameters; period; phase; project; renovation; service; spreadsheet; structural; technical; technologies; time; tool; total; units; user; value; works
- versions: original; plain text
- app01-8057
- author: Schmitt, Lucie ; Jeong, Jena ; Potier, Jean-Marc; Izoret, Laurent ; Mai-Nhu, Jonathan ; Decousser, Nicolas ; Pernin, Thomas
- title: Using an analysis of concrete and cement epd: verification, selection, assessment, benchmarking and target setting
- date: 2022-03-03
- words: 3243
- flesch: 58
- summary: The quantity of stored CO2 is calculated with the carbon- ation depth and the trapezoidal rules. The Figure 4 presents the quantity of stored CO2 for one square meter of the considered concrete.
- keywords: ability; building; carbon dioxide; carbonation; cement; clinker; co2; concrete; considered; construction; depth; different; dioxide; emissions; emitted; environment; equation; figure; footprint; life; material; methodology; model; numerical; parameters; phase; production; quantity; results; sdream; standard; structures; study; table; time; ton; uptake; value
- versions: original; plain text
- app01-8058
- author: Schmidt-Döhl, Frank Michael; Schulenberg, David ; Tralow, Franziska ; Neubauer, Jürgen ; Wolf, Julian Johannes ; Ectors, Dominique
- title: Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy
- date: 2022-03-03
- words: 5029
- flesch: 61
- summary: All specimens were stored in closed contain- ers at 23 ± 2 ◦C and above 95 % r.h. until drying. ATR-IR spectrum including the peak fit of a mortar with quartz aggregate and enrichment of the binder by grinding and sieving, showing the peaks of the Q1 and the Q2 structural units in the C-S-H. Background (logarithm function) subtracted before, leaned on the minima at the end of the displayed range. stored in closed containers at 23 ± 2 ◦C and above 95 % r.h. until drying.
- keywords: absorbance; aggregates; alite; analysis; atr; binders; calibration; cement; chain; cm−1; concrete; content; degree; different; figure; fit; heavy; hydrated; hydration; internal; length; liquid; materials; measured; measurements; method; necessary; peak; phase; possible; quantitative; quartz; range; separation; signals; silicon; specimen; spectroscopy; spectrum; standard; structural; substances; technique; tests; total; units; water; wt.-%
- versions: original; plain text
- app01-8059
- author: Shibuya, Akari ; Matsuda, Nobuhiro ; Iyoda, Takeshi
- title: Improvement mechanism of recycled concrete using C-S-H type accelerator and modifying recycled aggregate by carbonation technology
- date: 2022-03-03
- words: 2922
- flesch: 64
- summary: In concrete using recycled aggregates, it is necessary to take account of insufficient strength, drying shrinkage, freeze-thaw resistance. In previous study, the quality of recycled aggregates was improved by adsorbing carbon dioxide to recycled aggregates, and recycled concrete used the modified aggregates has been confirmed to increase strength and reduce drying shrinkage.
- keywords: acx; addition; aggregate; air; air permeability; bleeding; coefficient; compressive; concrete; effect; figure; interface; mortar; permeability; porosity; quality; recycled; rx10; rxs; rxw; shrinkage; strength; surface; tensile; test; water
- versions: original; plain text
- app01-8060
- author: Neumann, Julia ; Breitenbücher, Rolf
- title: Thin concrete overlays wit carbon reinforcement on deteriorated concrete pavements
- date: 2022-03-03
- words: 3433
- flesch: 56
- summary: To increase the durability of repairs and to save resources concrete overlays with carbon reinforcement are developed. Specimens for flexural tensile tests.
- keywords: addition; beams; behaviour; beton; bond; breaker; carbon; carbon concrete; carbon reinforcement; cases; concrete; contraction; cracking; cracks; ctrc; cycles; cyclic; damage; delamination; figure; flexural; für; hand; joint; large; layers; load; longitudinal; methods; number; order; overlay; pavements; proceedings; project; reinforcement; relative; repair; research; slabs; specimen; stresses; tensile; tests; textile; thin; und; von; young
- versions: original; plain text
- app01-8061
- author: Nomura, Shun ; Kasaya, Takafumi ; Sakoi, Yuki ; Fukada, Hisashi ; Matsumoto, Akira
- title: Physical properties of portland cement based concrete exposed at a depth of 3520 m in the Nankai Trough
- date: 2022-03-03
- words: 2311
- flesch: 57
- summary: Concrete specimens (36) were placed in six plastic baskets (400×272×300 mm; Figure 3). Preparation of concrete specimens The concrete mix used for the specimens is described in Table 1.
- keywords: agent; cement; chemical; compression; concrete; data; days; deep; density; depth; earth; exposure; figure; fresh; high; institute; japan; materials; modulus; nankai; physical; platform; portland; properties; research; results; science; sea; specimens; strength; study; technology; testing; tests; trough; water; young
- versions: original; plain text
- app01-8062
- author: Oberndorfer, Thomas ; Hunger, Frank ; Fischer, Oliver
- title: Glued timber concrete composite walls using ultra-high-performance concrete
- date: 2022-03-03
- words: 3285
- flesch: 57
- summary: Conclusions The completed test program showed that it is pos- sible to bond timber to UHPC using standard glues for CLT production regarding short-term behaviour. This paper gives a short introduction of the development of cross laminated timber (CLT) concrete composite walls with a glued connection.
- keywords: adhesive; bearing; behaviour; bond; calculated; centre; clt; composite; compressive; concrete; connection; cross; deflection; din; elements; experiments; failure; figure; force; glued; ground; high; horizontal; lamellas; laminated; length; line; load; loaded; material; maximum; mm2; performance; polyurethane; production; resin; scale; section; segments; setup; shear; specimen; stiffness; strain; strength; surface; technical; tests; timber; uhpc; ultra; wall
- versions: original; plain text
- app01-8063
- author: Oliveira, Victor Hugo Dalosto de ; Carvalho, Rodolfo Alves ; Neves, Rodolfo Rabelo ; Borges, Luana Ferreira ; Martins, Paulo Chaves de Rezende ; Oliveira, Marcos Honorato de ; Siqueira, João Paulo de Almeida ; Sobral, Rafael de Almeida ; Nazaré, Sidney Luan Teixeira de ; Cunhac, Carlos Henrique de Moura
- title: Structural flexural strengthening through material bonded to the concrete substrate
- date: 2022-03-03
- words: 3366
- flesch: 59
- summary: Reforço de vigas de concreto armado por meio de barras de aço adicionais ou chapas de aço e argamassa de alto desempenho Dissertação de mestrado Universidade de São Paulo, São Carlos, 1998. Dimensionamento de vigas de concreto armado reforçadas com chapas coladas com resina epóxi Dissertação de mestrado Universidade Federal Fluminense, Niterói, 1997.
- keywords: aci; applied; area; axis; calculation; carbon; cm2; concrete; criteria; deformations; design; equation; fck; fiber; figure; iterative; limit; literature; material; method; model; mpa; nbr; necessary; neutral; procedure; section; sheets; state; steel; strengthened; strengthening; stress; stresses; structural; ultimate
- versions: original; plain text
- app01-8064
- author: Oliveira, Victor Hugo Dalosto de ; Carvalho, Rodolfo Alves ; Borges, Luana Ferreira ; Martins, Paulo Chaves de Rezende ; Neves, Rodolfo Rabelo ; Siqueira, João Paulo de Almeida ; Oliveira, Gabriel Yves da Silva ; Anhaia, Cintia Adriana Azevedo de Liz
- title: Comparison between concrete stress diagrams according to the Brazilian standard ABNT NBR 6118: 2014
- date: 2022-03-03
- words: 3565
- flesch: 66
- summary: Strain and stress diagrams of concrete. Results and discussions Initially, it should be emphasized that the use of stress diagrams does not apply to line a and domain 1, since there are no compressive stresses in concrete, and its tensile stresses are neglected at the ultimate limit state.
- keywords: abnt; axis; block; compressed; compression; concrete; constant; diagram; domains; equation; failure; fcd; fck; figure; internal; limit; line; mpa; nbr; neutral; parabola; rectangle; rectangular; results; section; standard; state; strain; strength; stress; stresses; ultimate; εc2; εcu
- versions: original; plain text
- app01-8066
- author: Parcesepe, Eliana ; Lima, Carmine ; Maddaloni, Giuseppe ; Pecce, Maria Rosaria
- title: Engineering properties of geopolymer concrete: a review
- date: 2022-03-03
- words: 4516
- flesch: 47
- summary: Bond strength between blended slag and Class F fly ash geopolymer concrete with steel reinforcement. Geopolymer concrete (GPC) could be a solution that uses a cementless binder and recycled materials for producing concrete, while reducing the carbon dioxide emission and the demand for raw materials.
- keywords: //doi.org/10.1016; alkali; alternative; applications; ash; bar; beams; behaviour; bond; building; cement; characteristics; columns; composition; compression; concrete; conditions; construction; design; elastic; elements; engineering; environmental; experimental; figure; fly; geopolymer; geopolymer concrete; gpc; greater; high; https; increase; journal; lee; materials; mechanical; modulus; nre; opc; performance; production; properties; ratio; reinforcement; research; review; science; slag; steel; strength; structural; studies; table; temperature; tensile; tests; use
- versions: original; plain text
- app01-8067
- author: Paschalis, Spyridon A. ; Lampropoulos, Andreas P.
- title: Dowels effectiveness investigation between ultra high performance fiber reinforced concrete and reinforced concrete
- date: 2022-03-03
- words: 1657
- flesch: 59
- summary: RC beams with a length of 2.2 m strengthened with UHPFRC layers at the tensile side. [7] developed a numerical model that predicts the performance of RC beams which were strengthened with UHPFRC.
- keywords: beams; concrete; dowels; effectiveness; fiber; figure; high; interface; lampropoulos; layers; paschalis; performance; present; results; slips; strengthening; study; tensile; testing; uhpfrc; ultra
- versions: original; plain text
- app01-8069
- author: Pazderka, Jiří ; Hájek, Petr ; Nývlt, Michal ; Žáková, Hana
- title: Parapet structure from special shaped TRC blocks
- date: 2022-03-03
- words: 2111
- flesch: 55
- summary: Figure 4 shows precast parapet block (no. 1) which forms the supporting structure of the parapet shown in Figure 3. Notes: 1 - parapet block, 2 - reinforced concrete ceiling panel, 3 - reinforced concrete beam, 4 - anchoring of parapet block, 5 - horizontal part of parapet block, 6 - monolithic concrete - layer forming a gradient and stabilizes the parapet block, 7 - monolithic concrete - layer forming a gradient, 8 - dilatation, elastic strip, 9 - the upper part of the parapet block, 10 - anchoring of parapet block, 11 - vertical part of parapet block, 12 - lower thermal insulation layer (compensation for reinforced concrete elements), 13 - filling masonry of perimeter wall, 14 - main thermal insulation layer (ETICS), 15 - insulation of parapet extruded polystyrene (XPS), 16 - insulation of parapet block, 17 - conventional roofing layers of flat roof, 18 - reinforcing rib of parapet block 465 J. Pazderka, P. Hájek, M. Nývlt, H. Žáková Acta Polytechnica CTU Proceedings Figure 4.
- keywords: block; buildings; ceiling; concrete; construction; design; form; frame; horizontal; insulation; layer; lower; parapet; parapet block; plate; precast; reinforcement; ribs; shaped; solution; structure; terms; thermal; trc; vertical; wall
- versions: original; plain text
- app01-8070
- author: Pfleger, Marc-Patrick ; Vill, Markus
- title: Forced carbonation of recycled concrete aggregates
- date: 2022-03-03
- words: 3917
- flesch: 55
- summary: Sample concrete aggregates All experiments carried out with crushed concrete ag- gregates were done by using the same concrete mix- ture to achieve ideal comparability. 4. Experimental setup and methods The test setup was designed to investigate forced carbonation of recycled concrete aggregates, which means that no correlation with natural carbonation could be expected.
- keywords: absorption; aggregates; air; atmosphere; binder; carbonated; carbonation; cement; chamber; clinker; co2; concrete; conditions; consumption; contained; dioxide; dry; ecological; emissions; equipment; experiment; figure; forced; fractions; gas; grain; high; main; mass; material; matrix; moisture; natural; parameters; particular; potential; process; production; raw; reaction; recycled; recycling; results; sample; series; setup; share; sink; size; test; time; waste; water; worldwide
- versions: original; plain text
- app01-8071
- author: Breitenbücher, Rolf ; Przondziono, Robin
- title: Sustainability of concrete pavements considering traffic and de-icing agents
- date: 2022-03-03
- words: 3510
- flesch: 56
- summary: In concrete pavements, special conditions, that increase the likeliness of damaging reactions, as for example an alkali-silica reaction (ASR), prevail. Concrete pavements are subjected to cyclic loadings by traffic and climate changes.
- keywords: alkali; asr; average; beams; beton; bochum; breitenbücher; concrete; cracks; cycles; cyclic; damage; degradation; depth; different; dynamic; edyn; effects; fct; figure; influence; load; loading; microcracks; microstructural; modulus; number; pavements; penetration; przondziono; rel; relative; research; restraint; runtime; specimens; stresses; structures; surface; tensile; traffic; transport; ultrasonic; undamaged; university; uptake; von; water
- versions: original; plain text
- app01-8100
- author: Ďureje, Jakub ; Prošek, Zdeněk ; Trejbal, Jan ; Potocký, Štepán ; Tesárek, Pavel
- title: Influence of oxygen and argon plasma treatment on wettability and surface morphology of polypropylene microfibers
- date: 2022-03-24
- words: 2536
- flesch: 60
- summary: Keywords: Oxygen plasma, argon plasma, plasma treatment, plasma modification of microfibers, polypropylene, SEM, wettability. Percentage weight loss of microfibers af- ter argon and oxygen plasma treatment (A, O) and respective time in seconds (30, 60, 120, 240 and 480).
- keywords: acta; argon; changes; container; ctu; czech; effect; increase; mechanical; microfibers; modification; oxygen; oxygen plasma; plasma; plasma modification; polypropylene; polytechnica; power; proceedings; process; results; rie; seconds; sem; surface; system; time; treatment; water; weight; wettability
- versions: original; plain text
- app01-8101
- author: Faltus, Ondřej ; Horák, Martin
- title: A modular extension of a finite element contact implementation
- date: 2022-03-24
- words: 3323
- flesch: 54
- summary: In the case of contact, it is unclear how to introduce contact forces and resulting algorithmic stiffness into this process. Keywords: Contact, large strains, penalty method, 3D contact, node-to-segment, OOFEM.
- keywords: acta; algorithms; approach; boundary; brick; case; class; code; computational; condition; contact; ctu; domain; element; extension; finite; force; formula; formulation; gap; global; implementation; linear; matrix; mechanics; method; necessary; node; normal; object; oofem; penalty; point; polytechnica; possible; problems; proceedings; segment; space; stiffness; surface; tensor; test; universality; vector
- versions: original; plain text
- app01-8103
- author: Krátký, Štepán ; Havlásek, Petr
- title: Benchmark VERCORS 2022: mechanical response of the prestressed concrete containment wall to ambient conditions
- date: 2022-03-24
- words: 4081
- flesch: 55
- summary: Computational models and calibration strategy Computational model of the representative section for the structural sub-problem.
- keywords: ambient; ambient conditions; basic; behavior; benchmark; calibration; ccb; computational; concrete; conditions; containment; creep; cyclic; data; day; days; diffusion; direction; drying; evolution; figure; henv1; hoop; humidity; inner; linear; material; model; moisture; mpa; parameters; pressure; prestressing; relative; relaxation; response; section; shrinkage; steel; stress; structural; table; temperature; tests; thermal; time; vercors; vertical; wall
- versions: original; plain text
- app01-8104
- author: Latka, Kryštof ; Doškář, Martin ; Zeman, Jan
- title: Microstructure reconstruction via artificial neural networks: a combination of causal and non-causal approach
- date: 2022-03-24
- words: 3640
- flesch: 52
- summary: Values of the volume fraction error εφ, depending on the magnitude of artificially introduce noise ξ, neighbourhood radius hs, and the type of pooling layer used (max or average). Values of the two-point probability error εS2 , depending on the magnitude of artificially introduce noise ξ, neighbourhood radius hs, and the type of pooling layer used (max or average). to the original; however, it could not assess how simi- lar the reconstructed pattern is to the original.
- keywords: average; causal; causal neighbourhood; central; data; error; fraction; image; input; layer; local; material; microstructure; model; neighbourhood; neighbourhood radius; network; neural; neurons; noise; non; nrp; number; pattern; phase; pixel; pooling; radius; random; reconstructed; reconstruction; reference; results; sample; size; smoothing; step; values; volume; εs2
- versions: original; plain text
- app01-8106
- author: Lebeda, Martin ; Kabele, Petr
- title: The effect of sampling volume size on the apparent stiffness of jointed rock mass
- date: 2022-03-24
- words: 3597
- flesch: 56
- summary: [1] averaging procedure in conjunction with 3D stochastic DFN has been ex- amined with the aim to determine the dependence of apparent rock mass stiffness on sampling volume size. , the power law variability of fracture size is sufficient to produce anisotropic overall deformation moduli.
- keywords: analysis; anisotropy; apparent; approach; averaging; box; continuum; deformation; dfn; different; distribution; effect; elastic; element; equivalent; fractures; geological; index; larger; law; mass; mean; mechanics; model; moduli; oda; orientation; overall; parameters; power; present; probability; results; rock; rock mass; rve; sampling; sampling volume; size; stiffness; stochastic; strain; stress; uniform; value; volume
- versions: original; plain text
- app01-8108
- author: Mužíková, Barbora ; Plaček Otcovská, Tereza ; Padevět, Pavel
- title: Determination of water absorption coefficient of unfired earth materials different in used clay and ratio of components
- date: 2022-03-24
- words: 2679
- flesch: 65
- summary: 4. Method of Determining Water Absorption Coefficient Specimens of measurement 40×40×160 mm were used for the test of water absorption. Water absorption coefficient w says how quickly can the material absorb the water.
- keywords: absorption; agl; area; capacity; capillary; clay; coefficient; earth; figure; material; maximal; mixture; montmorillonite; prescriptions; rammed; ratio; sand; specimens; time; unfired; values; water; water absorption; weight
- versions: original; plain text
- app01-8111
- author: Pešta, Jan ; Prošek, Zdeněk
- title: Environmental perspectives of fine grounded concrete powder: LCA case study of light-weight concrete block
- date: 2022-03-24
- words: 3481
- flesch: 58
- summary: The environmental performance of considered con- crete block was compared with environmental impacts declared in the EPD of Aerated Autoclaved Concrete. The impact in these categories is also influenced by the contribution of landfilling process, which describes environmental impacts caused by construction inert material disposed on the landfill.
- keywords: assessment; block; categories; category; change; climate; concrete; considered; construction; consumption; contribution; cycle; energy; environmental; fine; frwc; impact; life; lightweight; materials; potential; processes; production; products; recycled; resource; results; study; system; table; total; use; waste; water
- versions: original; plain text
- app01-8114
- author: Richterová, Kristýna ; Heinrich, Pavel ; Bílý, Petr
- title: Adhesion test – testing of selected adhesives on fired clay
- date: 2022-03-24
- words: 3735
- flesch: 64
- summary: The following paper deals with the comparison of adhesion of specimens made of fired clay and selected adhesives. Selected adhesives were applied to ceramic plates according to the usual standards.
- keywords: adhesion; adhesion test; adhesive; age; applied; area; braven; clay; day; den; deviation; failure; fired; foam; force; fti; glue; heluz; joint; masonry; max; measurements; mpa; results; samples; selected; small; stress; tensile; tensile stress; test; thin; type; σti; σtk; σtm
- versions: original; plain text
- app01-8119
- author: Sekavová, Hana ; Prošek, Zdeněk ; Karra’a, George
- title: Detection of the presence of microorganisms during production of plasterboard
- date: 2022-03-24
- words: 2420
- flesch: 67
- summary: The plasterboards only from recycled material was produced in laboratory condition. The target of this research is find the most safe amount of recycled material from gypsum plaster- boards what is possible to use as an inert in plaster- board production.
- keywords: bonding; ctu; czech; energy; fgd; figure; gypsum; inert; influence; knauf; material; milled; paper; plant; plasterboards; počerady; praha; proceedings; process; production; properties; recipe; recycled; recycling; research; scrap; slurry; standard; stucco; trial; use; waste; year
- versions: original; plain text
- app01-8120
- author: Schmidt, Jaroslav ; Janda, Tomáš
- title: Phase-field damage of laminated glass in explicit dynamics
- date: 2022-03-24
- words: 4242
- flesch: 65
- summary: Keywords: Phase field damage model, laminated glass, dynamic damage, glass fracture. 2. Phase-field model We suppose the elastic damageable material occupying space Ω is loaded by external traction forces t on part Ωt and the current body deformation is described by displacement field u(x) and damage field d(x).
- keywords: acta; approach; behavior; case; common; crack; damage; decomposition; deflection; different; displacement; distribution; dynamic; elastic; elements; energy; explicit; field; figure; force; form; fracture; function; g(d; glass; impactor; implementation; kres; laminated; line; material; mesh; model; parameter; phase; plate; polytechnica; proceedings; results; section; setup; shear; stiffness; strain; stress; tensor; thickness; time; triangles; velocity
- versions: original; plain text
- app01-8140
- author: Dybala, Vojtěch
- title: Kalker’s coefficient c11 and its influence on the damping and the retuning of a mechanical drive torsion system of a railway vehicle
- date: 2022-05-10
- words: 2776
- flesch: 61
- summary: Keywords: Kalker, natural frequency, railway vehicle, torsion system, wheel-rail contact. Natural frequencies of torsion system
- keywords: angle; basic; c11; calculation; coefficient; contact; damping; drive; figure; frequencies; frequency; function; influence; kalker; mechanical; model; natural; oscillations; rail; railway; research; rotation; second; set; shaft; system; torsion; traction; value; vehicle; velocity; wheel
- versions: original; plain text
- app01-8141
- author: Hlubuček, Adam
- title: Digital Track Map for the VEXA expert system
- date: 2022-05-10
- words: 3643
- flesch: 48
- summary: Keywords: Digital Track Map, VEXA, autonomous railway vehicle, expert system, GIS. 1. 35/2022 Digital Track Map for the VEXA Expert System Figure 1.
- keywords: ato; automatic; basis; cases; control; coordinate; czech; data; decision; description; digital; digital map; digital track; elements; expert; features; gis; incident; individual; information; infrastructure; inputs; line; linear; location; map; matching; module; necessary; net; objects; operation; order; possible; prague; pro; railtopomodel; railway; segment; system; track; track map; train; use; vehicle; vexa; vexa system
- versions: original; plain text
- app01-8142
- author: Kolář, Josef
- title: Modern railways for the 21st century – a challenge not only for designers
- date: 2022-05-10
- words: 2533
- flesch: 50
- summary: Keywords: Active safety, design vehicles, ETCS, high speed railway, modern railway transport, passive safety, regional railways. The paper outlines the basic goals for modern rail transport in the Czech Republic.
- keywords: acta; active; appropriate; car; category; century; control; ctu; czech; design; electric; etcs; european; figure; freight; high; hsr; increase; kolář; level; light; lines; models; modern; new; operation; passenger; passive; polytechnica; proceedings; railway; regional; republic; requirements; road; rolling; safety; speed; stocks; system; train; transport; units; use; vehicle
- versions: original; plain text
- app01-8143
- author: Krupík, Pavel
- title: Construction 4.0 in the concept of the railway
- date: 2022-05-10
- words: 2408
- flesch: 47
- summary: Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague CONSTRUCTION 4.0 IN THE CONCEPT OF THE RAILWAY Pavel Krupík Czech Technical University in Prague, Faculty of Civil Engineering, Department of Construction Management and Economics, Thákurova 2077/7, 166 29 Prague 6, Czech Republic correspondence: pavel.krupik@fsv.cvut.cz Abstract. The dominant uncertainties are productivity, costs, quality of work, workforce and skills management, and health and safety, which are just some of the opportunities that Construction 4.0 could address.
- keywords: acta; article; bim; concept; construction; czech; data; development; digital; engineering; factor; frmcs; future; human; implementation; important; increase; industry; infrastructure; innovation; issn; maintenance; management; new; operation; polytechnica; prague; proceedings; productivity; programme; railway; research; safety; sector; smartrail; solutions; systems; technical; technology; time; transport; use; worker
- versions: original; plain text
- app01-8146
- author: Kulich, Pavel ; Plášek, Otto
- title: Railway track deflection analysis by using evolutionary algorithms
- date: 2022-05-10
- words: 1737
- flesch: 56
- summary: When solving the problem, we look for a combination of model parameters that leads to the best possible solution. Keywords: Railway track deflection, reverse analysis, evolutionary algorithms.
- keywords: algorithms; analysis; analytical; ctu; data; deflection; ei1; ei2; evolutionary; figure; foundation; layer; methods; model; m−2; parameters; presented; proceedings; rail; railway; reverse; sleeper; track; upper
- versions: original; plain text
- app01-8147
- author: Leso, Martin
- title: The Railway 4.0 Concept – the vision of a digital railway in the Czech Republic (CR)
- date: 2022-05-10
- words: 7656
- flesch: 41
- summary: The vision of ITS-R 2 defined the fundamental vision of railway technology 1The ITS-R vision was added into the strategic materials of the Ministry of Transportation in 2016 within the Implementa- tion Plan of the Action Plan for the Development of Intelligent Transport Systems (ITS) in the Czech Republic by 2020 (with an outlook to 2050) as project No. 63, ZD-20, Pilot verification of ITS-R technology 2http://www.sdt.cz/dokumenty/2015_Pozicni_dokument_ SDT_rozvoj_ITS_na_zeleznici.pdf development. So far, no systematic and comprehensive change of safety technologies has taken place on a larger segment of the off-corridor lines.
- keywords: acta; application; approach; architecture; area; basic; bts; cables; communication; comprehensive; concept; connection; control; controllers; corridor; costs; crossing; current; czech; czech republic; data; devices; digital; elements; entire; equipment; etcs; etcs system; example; frmcs; functions; gsm; implementation; increase; infrastructure; installation; introduction; issue; izz; level; lines; long; modernization; necessary; networks; new; number; object; operation; optical; paper; polytechnica; possible; power; proceedings; radio; railway; railway network; railway system; regional; republic; requirements; routes; safety; safety system; safety technologies; solution; station; supply; system; technological; technologies; technology; time; track; traffic; train; transmission; transport; usability; use; vehicles; vision
- versions: original; plain text
- app01-8149
- author: Šlapák, Jiří ; Michálek, Tomáš
- title: Comparison of selected parameters for evaluation of rail surface damage intensity
- date: 2022-05-10
- words: 4234
- flesch: 63
- summary: The figure further shows that the parameter Tqst values are smaller than the wear number Tγ values in curve radii greater than 700 m. Then for smaller values of the curve radii, the parameter Tqst values are greater then the values of the wear number Tγ . Conversely, the parameter Tqst values are higher than the wear number in the very small curve radii.
- keywords: body; bogie; coefficient; contact; curve; curve radius; damage; difference; figure; friction; guiding; influence; intensity; longitudinal; multi; number; parameter; parameter tqst; radii; rail; range; relative; rsd; simulations; stiffness; tqst; values; vehicle; wear; wear number; wheel
- versions: original; plain text
- app01-8150
- author: Valehrach, Jan ; Říha, Tomáš ; Vendel, Jiří ; Plášek, Otto
- title: The long-pitch corrugation development in small radii curves
- date: 2022-05-10
- words: 2807
- flesch: 64
- summary: Introduction Various technologies to remove rail defects such as the long-pitch corrugation are present. The development prediction, however, could not reflect some minor maintenance works, and also due to not very rich set of measured values, it is burdened with some uncertainty.
- keywords: corrugation; curves; data; defect; development; figure; line; long; maintenance; measuring; monitoring; p2p; pitch; pitch corrugation; place; prediction; progression; radii; rail; railway; range; replacement; rms; section; small; state; table; timeframe; track; values; wavelength; years; čsn
- versions: original; plain text
- app01-8151
- author: Vendel, Jiří ; Plášek, Otto ; Valehrach, Jan ; Říha, Tomáš ; Mach, Václav
- title: Comprehensive verification of the behavior of the continuous welded rail on the bridge
- date: 2022-05-10
- words: 3563
- flesch: 54
- summary: A number of research projects focus on determin- ing the combined response of the bridge structure and continuous welded rail from individual types of additional stresses in the rails, which are: • stress from thermal changes in rails, • stress from thermal changes in bridge structure, • stress from traction and braking forces, • stress from classified vertical traffic loads. This work solves especially the first part of the problem, which is continuous welded rail and its role in the interaction system with a bridge.
- keywords: approximation; ballast; behavior; bridge; bridge structure; changes; continuous; control; cwr; data; displacement; equations; expansion; experimental; figure; functions; geodetic; individual; linear; longitudinal; longitudinal resistance; measured; measurements; monitoring; number; phase; rail; residual; resistance; shear; shear resistance; sleeper; space; state; strain; stress; structure; system; temperature; tensometric; thermal; track; value
- versions: original; plain text
- app01-8236
- author: Pavlů, Tereza; Pešta, Jan; Volf, Martin; Lupíšek, Antonín
- title: Catalogue of construction products containing secondary raw materials from different industries and municipal waste
- date: 2022-12-21
- words: 3358
- flesch: 41
- summary: Also, it contains a list of valid requirements for the use of recycled materials under specific conditions of the Czech Republic. Meanwhile, the main regulation for high rates of recycling materials and their utilization in the construction industry is defined by Regulation (EU) No. 305/2011 of the European Parliament and the Council, which focuses on sustain- able utilization of natural resources [6].
- keywords: andrecycling; ash; buildings; catalogue; circularity; composite; concrete; construction; czech; different; economy; energy; flows; fly; glass; gypsum; high; industry; insufficient; main; materials; municipal; packaging; plastic; possibilities; possible; potential; primary; production; products; raw; recycled; recycling; reuse; risks; secondary; slag; sorting; sources; specification; table; use; utilization; waste; wood
- versions: original; plain text
- app01-8237
- author: Migla, Lana; Lebedeva, Kristina
- title: Optimization model of solar cooling system with latent heat storage
- date: 2022-12-21
- words: 4086
- flesch: 51
- summary: Thermophysical characterization of MgCl2·6H2O, xylitol and erythritol as phase change materials (PCM) for latent heat thermal energy storage (LHTES). Critical review of latent heat storage systems for free cooling in buildings.
- keywords: absorption; acta; additional; buildings; capacity; change; chiller; circular; conductivity; cooling; cop; ctu; cumulative; discharged; efficiency; energy; erythritol; figure; finned; fins; heat; heating; high; impact; ins; latent; materials; melting; methods; model; modified; non; optimization; pcm; performance; phase; polytechnica; power; proceedings; results; scs; simulation; solar; solid; specific; storage; study; system; tank; temperature; thermal; transfer; tube; use; water
- versions: original; plain text
- app01-8240
- author: Henriques Alves FERREIRA , Maria Teresa; AGUIAR COSTA, António; Dinis SILVESTRE, José
- title: Integrated sustainability assessment using BIM
- date: 2022-12-21
- words: 3364
- flesch: 45
- summary: 2.3 Framework for BIM LCA LCC Analysis 3 Results 3.1 Buildings Assessment Information 4 Discussion 5 Conclusion Acknowledgements References LCA methodology analysis and its inte- gration into a BIM Plugin.
- keywords: analysis; assessment; authors; bim; buildings; carbon; category; complete; construction; cost; cycle; data; design; different; economic; end; energy; environmental; figure; framework; functionalities; impact; indicators; information; integrated; lca; lcc; level(s; life; materials; modules; parameters; pdt; performance; plugin; potential; product; project; research; results; stages; streamlined; sustainability; use; user
- versions: original; plain text
- app01-8241
- author: Spurný, Jakub; Kabrhel, Michal
- title: Specifying boundary conditions for the operation of pipe heating systems with impact on the building energy balance
- date: 2022-12-21
- words: 2690
- flesch: 63
- summary: One of the boundary conditions addressed is the effect of heating water temperature on the pressure loss in piping systems commonly known calculation for the total pressure loss is the sum of the pressure loss through the inserted resistances and the frictional 484 vol. Therefore, a comparison of the pressure losses at heating water temperatures from 75 °C to 30 °C at a step of 5 °C was made.
- keywords: boundary; buildings; calculated; conditions; control; design; drop; effect; element; energy; figure; flow; heating; laminar; loss; mass; model; mop; parameters; pipe; pressure; radiator; region; room; smooth; systems; s−1; temperature; var; variants; water
- versions: original; plain text
- app01-8244
- author: Matschi, Christoph; Nemeth, Isabell
- title: Quantifying the impact of external and internal factors and their interactions on thermal load behaviour of a building
- date: 2022-12-21
- words: 3436
- flesch: 54
- summary: For the energy-efficient design of district heating networks, knowledge about the neighborhood heat load behavior, through heating load profiles in high temporal and spatial resolution, is crucial. On the basis of these identified influencing factors, a simple method for the creation of heating load profiles will be developed with the help of a machine learning algorithm.
- keywords: analysis; anovas; behavior; building; building heating; climate; data; demand; der; district; energy; factors; heating; heating load; individual; influence; interactions; load; load behavior; local; method; model; months; networks; parameters; profiles; research; results; series; simulation; size; software; strength; summer; table; thermal; tightness; variables; varied; wind; window; year
- versions: original; plain text
- app01-8248
- author: Bilobran, Dawn
- title: The New Industrial Revolution: Finding life for the buildings left behind
- date: 2022-12-21
- words: 3742
- flesch: 36
- summary: Inspired by expositions and planning movements that encouraged enhance- ment of public buildings and spaces, municipalities commissioned architects with portfolios of museums, libraries, and universities to partner with engineers on the design of new power facilities. Govern- ment agencies must do more to incentivize the reuse of legacy power plant facilities, dissuade the knee- jerk reaction to demolish and encourage thorough site remediation.
- keywords: acta; adaptive; adaptive reuse; agency; architectural; art; buildings; challenges; cities; city; civic; construction; decorative; demolition; design; distribution; energy; engineering; environmental; european; facilities; facility; federal; financial; gas; generation; government; heritage; historic; incentives; industrial; landfills; large; legacy; life; materials; municipal; national; new; partnerships; planning; plants; polytechnica; power; preservation; proceedings; programs; projects; public; redevelopment; rehabilitation; remediation; reuse; seattle; service; site; stakeholders; states; steam; structures; substations; success; sustainable; undertakings; united; utility; washington; waste; world
- versions: original; plain text
- app01-8255
- author: Aguacil , Sergi; Morier, Yvan; Couty, Philippe; Bacher, Jean-Philippe
- title: Building-integrated photovoltaics (BIPV) combined with hydrogen-based electricity storage system at building-scale towards carbon neutrality
- date: 2022-12-21
- words: 4456
- flesch: 64
- summary: Keywords: Building-integrated photovoltaics, building energy analysis, solar hydrogen storage, fuel cell, battery storage system. The building will already be equipped with energy storage in the form of Li-ion batteries but will provide enough space for further research, in our case, a H2 storage system with a co-generation fuel cell allowing to produce heat and electricity for the building.
- keywords: battery; building; carbon; case; cell; consumption; control; demand; design; efficiency; electrical; electricity; electrolyser; emissions; energy; figure; fuel; fuel cell; ghg; grid; h2 storage; heat; higher; hot; hydrogen; mode; order; overall; pack; phase; production; program; ratio; recovery; results; sizing; solar; storage; storage system; study; system; tank; thermal; values; water; year
- versions: original; plain text
- app01-8256
- author: Mahdavi, Ardeshir; Berger, Christiane
- title: Toward a critical assessment of indoor environmental quality standards
- date: 2022-12-21
- words: 3483
- flesch: 41
- summary: Thermal comfort standards typically refer to rele- vant (measureable) physical variables, such as air tem- perature, air speed, and water vapour concentration. Secondly, IEQ standards, in contrast to building con- struction and structure codes, cannot rely only on engineering sciences, but must also take into account findings from human and social sciences such as phys- iology, psychology, and sociology.
- keywords: acta; air; ashrae; assessment; basis; building; codes; comfort; compliance; conditions; constructs; critical; ctu; delivery; design; environmental; evaluations; evidence; explicit; figure; guidelines; health; human; ieq; indoor; instance; limitations; mahdavi; mandates; occupants; parameters; performance; polytechnica; proceedings; process; quality; related; relevant; requirements; scientific; sources; specification; standards; subjective; technical; temperature; thermal; transactions; understanding; values; variables; visual
- versions: original; plain text
- app01-8258
- author: Kugl, Jiří
- title: The potential of unused railway areas
- date: 2022-12-21
- words: 5252
- flesch: 44
- summary: This paper will explore the differences between “standard” brownfields and unused railway areas like the typical ownership structure, particular location within the city and the effect station has on the city structure, composition and topography of the areas or the fact that railway areas are most often never really fully abandoned and they do continue to serve in some, albeit diminished capacity. 2. Specifics of the unused railway areas First, it is necessary to define what we consider to be unused railway areas and what separates them from the usual term – brownfields.
- keywords: acta; areas; average; barrier; brownfields; buildings; cases; central; cities; city; czech; czech republic; development; effect; example; extent; fact; function; high; important; inhabitants; interesting; land; landscape; large; life; local; median; necessary; network; new; number; operation; percent; polytechnica; position; possibilities; possible; potential; proceedings; railway; railway areas; railway stations; republic; research; revitalization; revitalization potential; role; sample; sidings; significant; size; state; stations; structure; technical; tracks; transport; unused; unused areas; unused railway; urban
- versions: original; plain text
- app01-8261
- author: Hernández, Jose L.; Quijano, Ana; Noaille, Pierre; Virtanen, Mikko; García, Rubén
- title: Digitalising cities: A methodology to map evaluation requirements into robust and feasible data collection approaches
- date: 2022-12-21
- words: 4333
- flesch: 44
- summary: [9] A. Quijano, J. L. Hernández, P. Nouaille, et al. Sustainable cities: A KPI-driven sustainable evaluation framework for smart cities. Keywords: Digitalisation, sustainable cities, KPIs-based assessment, monitoring, decision-making, data.
- keywords: acta; actions; analysis; application; assessment; calculation; case; cities; city; collection; current; data; decision; definition; digitalisation; district; economy; energy; evaluation; figure; framework; helsinki; indicators; interventions; kpis; lessons; level; main; making; methodology; mobility; monitoring; mysmartlife; nantes; paper; people; pillars; plans; proceedings; programmes; project; real; requirements; section; sensors; smart; smart cities; smart city; stage; strategic; support; sustainable; transformation; urban
- versions: original; plain text
- app01-8274
- author: Bartko, Marek; Durica, Pavol
- title: Verification of window properties after 10 years of exploitation: results of measurements in the pavilion laboratory and the climate chamber
- date: 2022-12-21
- words: 3180
- flesch: 53
- summary: Window simulation in simulation software In the design and planning process of a building, ther- mal bridges are analyzed for several construction frag- ments, including the window frame detail and the window fitting into the opening. With increasing demands for thermal pro- tection, window constructions are constantly evolving.
- keywords: building; chamber; climate; climate chamber; coefficient; comparison; conditions; difference; energy; engineering; environment; exploitation; figure; glazing; heat; indoor; laboratory; manufacturer; measured; measurements; outdoor; pavilion; pavilion laboratory; plastic; properties; real; results; simulation; software; solar; surface; table; temperature; thermal; transfer; transmittance; values; window; years
- versions: original; plain text
- app01-8276
- author: Francesco, Salamone; Belussi, Lorenzo; Danza, Ludovico; Dobjani, Etleva; Ghellere, Matteo; Meroni, Italo; Shtylla, Arben; Shtylla, Saimir
- title: Bringing students closer to the issues of indoor environmental quality and technology using nEMoS device: an experience in Albania
- date: 2022-12-21
- words: 2930
- flesch: 53
- summary: Finally, the TC analysis confirms the measured data (East classroom warmer than West classroom). Monitored environmental data: a) East classroom; b) West classroom.
- keywords: air; albania; analysis; avg; building; campaign; classroom; co2; comfort; considered; danza; data; device; east; education; environmental; figure; higher; iaq; ieq; indoor; low; mean; monitored; monitoring; monitoring campaign; nemos; new; perception; pupils; quality; research; school; std; students; subjective; survey; technology; thermal; value; visual; west
- versions: original; plain text
- app01-8277
- author: Barton, Michael; Pichlmeier, Franziska; Wolter, Marissa; Schweigler, Christian
- title: Development of a realistic scenario for the thermal energy demand of residential buildings in Bavaria till 2050
- date: 2022-12-21
- words: 3671
- flesch: 36
- summary: Balance heat supply residential buildings in Bavaria 2016. Balance heat demand residential buildings in Bavaria 2016.
- keywords: 2016; 2050; barton; bavarian; bayerisches; bayern; building; building stock; co2; data; demand; der; development; emissions; energy; energy demand; figure; final; final energy; für; germany; goals; gwh; heat; heating; houses; https://www.statistikdaten.bayern.de/genesis/online?operation=abruftabellebearbeiten&levelindex=1&levelid=1677595980361&auswahloperation=abruftabelleauspraegungauswaehlen&auswahlverzeichnis=ordnungsstruktur&auswahlziel=werteabruf&code=12421-001&auswahltext=&nummer=4&variable=4&name=kreise&werteabruf=werteabruf#abreadcrumb; objectives; political; proceedings; rate; realistic; reduction; refurbishment; renewable; renovation; residential; results; scenario; sector; sources; stock; supply; und; use
- versions: original; plain text
- app01-8279
- author: Najaf Khosravi, Shiva; Teufl, Helene; Mahdavi, Ardeshir
- title: Measurement and CFD analysis of a local radiant cooling solution
- date: 2022-12-21
- words: 3726
- flesch: 47
- summary: The main objective of this query was to explore the potential influence of the human presence on the air flow pattern around the radiant cooling panel. 4. Conclusion Using local radiant cooling panels has been suggested to be a potentially promising alternative to tradi- tional air-conditioning system.
- keywords: acta; air; analysis; ashrae; building; ceiling; cfd; change; comfort; computational; cooling; ctu; different; discomfort; energy; environment; experimental; figure; flow; heat; human; indoor; journal; laboratory; local; mahdavi; model; numerical; panel; performance; polytechnica; potential; proceedings; radiant; results; room; simulated; simulation; studies; study; surface; systems; temperature; test; teufl; thermal; transfer; turbulence; velocity; ventilation; vertical; water
- versions: original; plain text
- app01-8291
- author: Fahlstedt, Oskar; Bohne, Rolf Andrè
- title: A theoretical assessment of transport emissions from institutional buildings in a Norwegian municipality
- date: 2022-12-21
- words: 6723
- flesch: 50
- summary: Moreover, in the assessment, the hypoth- esis that transport emissions would be higher than building emissions was not the case. 3. Results The overall results showed that building emissions are always higher than the ones from transport for the first two electricity mixes (i.e., 402 and 136 g CO2eq/kWh).
- keywords: acta; approach; area; assessment; building; building emissions; bærum; carbon; case; children; co2eq; ctu; diesel; distance; electricity; emissions; energy; environment; figure; framework; gasoline; heated; higher; impacts; important; induced; information; kwh; level; life; literature; location; low; lower; m2a; mix; municipality; new; norway; norwegian; operational; operational emissions; polytechnica; potential; proceedings; quality; refurbishment; requirements; results; scale; scenario; school; share; specific; standard; stock; study; sustainable; table; technical; theoretical; total; transport; transport emissions; transportation; travel; urban; use; value; years
- versions: original; plain text
- app01-8297
- author: Kopecký, Pavel
- title: Hygric performance of new building components for vertical green gardens
- date: 2022-12-21
- words: 3701
- flesch: 62
- summary: Test samples differ in shape, arrangement of functional layers, water distribution means and irrigation patterns. The distribution of water along the top edge of test samples was therefore redesigned during spring 2021.
- keywords: acta; air; ambient; building; carpet; components; conditions; daily; distribution; edge; element; energy; evapotranspiration; façade; figure; grass; green; greenery; hygric; irrigation; mean; measured; mineral; new; overflow; patterns; performance; plants; plastic; polytechnica; real; sample nr; samples; season; sensors; site; soil; solution; substrate; surface; system; technical; teeth; temperature; test; test samples; university; vertical; vol; water; watering; wool
- versions: original; plain text
- app01-8298
- author: Mandinec, Jan; Johansson, Pär
- title: Towards an automatized and objective assessment of data from visual inspections of building envelopes
- date: 2022-12-21
- words: 4510
- flesch: 52
- summary: The latter part of the review was exemplified using computer vision based model (Build-Sense model) for detection of missing joints on a wall of Tjolöholms castle, a historical building in Sweden. Selection of renovation measures related to building envelope are often far from optimal as decisions are usually made based on visual inspections.
- keywords: acta; algorithms; analysis; area; assessment; automatized; bounding; boxes; building; building envelope; case; castle; cnn; computer; confidence; construction; cracks; ctu; current; damage; data; detection; different; drones; envelope; figure; flight; framework; high; images; inspection; joints; learning; level; literature; maintenance; masonry; missing; model; neural; number; objective; panoramic; performance; planning; polytechnica; proceedings; process; renovation; review; sense; set; stone; study; subsequent; sweden; tjolöholms; training; uav; uavs; vision; wall
- versions: original; plain text
- app01-8299
- author: Loga, Tobias; Stein, Britta; Behem, Guillaume
- title: Use of energy profile indicators to determine the expected range of heating energy consumption
- date: 2022-12-21
- words: 5866
- flesch: 37
- summary: These “energy profile indicators” are used as input for an energy perfor- mance calculation to determine an expected range of actual energy consumption. However, huge challenges are faced when cross-section and longitudinal analyses are needed to get an overall view of the refurbishment progress and energy consumption of housing stocks.
- keywords: acta; actual; application; area; assessment; available; average; behaviour; behem; building; calculated; calculation; class; climate; companies; comparison; conductance; consumption; darmstadt; data; design; dhw; different; effect; energy; energy consumption; energy performance; energy profile; energy use; envelope; estimation; example; expectation; family; heat; heating; house; housing; indicators; information; input; insulation; iwu; kwh/(m2a; large; loga; method; model; number; occupant; owners; performance; physical; physics; probability; proceedings; profile; profile indicators; quality; range; refurbishment; result; sample; single; site; state; stock; supply; system; table; thermal; thickness; type; uncertainties; uncertainty; unknown; use; values; variables
- versions: original; plain text
- app01-8306
- author: Fahlstedt, Oskar; Ma, Winnie
- title: Investigating the change in preference of living and transport during COVID-19
- date: 2022-12-21
- words: 6843
- flesch: 55
- summary: For all trans- port modes except biking, there was stated a range of increased travel time, see Figure 7. If given the opportunity to work from home at least once a week workers are less in- clined to let the distance to work be a deterministic factor as workers accept increased commuting time (5 % longer) between home and the work place [6].
- keywords: acta; areas; aspects; average; benefits; car; change; city; co2; commute; covid-19; ctu; data; days; demand; distribution; effect; emissions; energy; environmental; figure; higher; home; housing; important; increase; larger; leisure; literature; living; location; longer; maximum; minutes; mode; non; office; pandemic; people; polytechnica; positive; post; potential; preference; primary; proceedings; public; rebound; reduced; reduction; research; residence; respondents; results; sample; scenario; share; size; state; study; survey; telecommuting; teleworking; time; total; transport; travel; trips; urban; use; week; willingness; work; workers; workplace
- versions: original; plain text
- app01-8311
- author: Haase, Matthias; Baer, Daniela
- title: Implementation of positive energy district concepts and energy master plans for decarbonization of districts
- date: 2022-12-21
- words: 4998
- flesch: 41
- summary: https://doi.org/10.14311/APP.2022.38.0417 552 https://www.techstreet.com/ashrae/standards/or-20-020-energy-master-planning-identifying-framing-constraints-that-scope-your-technology-options?product_id=2113219 https://www.techstreet.com/ashrae/standards/or-20-020-energy-master-planning-identifying-framing-constraints-that-scope-your-technology-options?product_id=2113219 https://www.techstreet.com/ashrae/standards/or-20-020-energy-master-planning-identifying-framing-constraints-that-scope-your-technology-options?product_id=2113219 https://www.techstreet.com/ashrae/standards/or-20-020-energy-master-planning-identifying-framing-constraints-that-scope-your-technology-options?product_id=2113219 https://doi.org/10.1016/j.enbuild.2017.08.074 https://doi.org/doi/10.2777/04888 https://jpi-urbaneurope.eu/ped/ https://doi.org/10.1016/j.jclepro.2013.11.039 https://doi.org/10.1016/j.rser.2012.01.072 https://doi.org/10.2172/924651 https://www.wien.gv.at/stadtentwicklung/energie/pdf/energierahmenstrategie-2030-en.pdf https://www.wien.gv.at/stadtentwicklung/energie/pdf/energierahmenstrategie-2030-en.pdf https://doi.org/10.1016/j.rser.2018.10.014 https://doi.org/10.14311/APP.2022.38.0417 Acta Polytechnica CTU Proceedings 38:546–552, 2022 1 Introduction 1.1 Energy master planning (EMP) 1.2 Positive energy districts and EMP 1.3 Issues in energy supply (utility model) 2 Research question 3 Method 4 Results 4.1 Characteristics of new energy supply concepts 4.2 Emerging models 4.3 Therefore, understanding the different dimensions of sustainable development in combination with energy supply and consumption is more important than ever for planning and realizing settlements.
- keywords: acta; analysis; approach; baer; building; business; characteristics; climate; communities; community; concepts; constraints; consumption; control; cooling; costs; ctu; demand; development; different; distribution; district; efficiency; electricity; emp; end; energy; energy supply; gas; generation; goals; grid; haase; heating; implementation; important; investment; level; local; market; master; models; national; needed; neighborhood; options; ownership; peds; planning; polytechnica; positive; power; private; proceedings; production; project; public; renewable; research; results; role; sector; service; stakeholders; storage; supply; sustainable; system; technologies; understanding; users; utilities; utility; value; way
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- app01-8313
- author: Haase, Matthias
- title: A case study of implementing a renovation concept
- date: 2022-12-21
- words: 3179
- flesch: 59
- summary: Scaling up deep energy renovations. The following assumptions were considered as shown in Table 1 (energy costs and emissions), Table 2 (investment costs), Table 3 (maintenance costs) and Table 4 (energy costs).
- keywords: acta; block; boiler; building; case; chf; co2; consumption; costs; ctu; different; district; economic; electricity; emissions; energy; figure; haase; heating; houses; investment; kwh; measure; options; pellets; planning; polytechnica; proceedings; reduction; renewable; renovation; roof; row; savings; study; supply; system; table; type; unit; use; years
- versions: original; plain text
- app01-8314
- author: Haase, Matthias; Motoasca, Emilia
- title: Characteristics of business models for innovation clusters in decarbonation projects
- date: 2022-12-21
- words: 4486
- flesch: 39
- summary: In the energy sector the following characteristics to the business models for energy supply have been identified. There are no specific business models for energy supply applied to renovation of districts.
- keywords: acta; activities; bms; buildings; business; business models; characteristics; clusters; companies; consumers; consumption; control; cost; customer; demand; different; distribution; district; efficiency; electricity; energy; energy supply; europe; financing; flexibility; generation; governance; grid; heat; important; information; infrastructure; innovation; level; local; main; management; market; measures; models; ownership; polytechnica; power; proceedings; production; providers; renewable; renewable energy; res; resources; sector; service; solutions; sources; stakeholders; stock; structure; supply; sustainable; system; technologies; transactions; transformation; use; utilities; value; way
- versions: original; plain text
- app01-8315
- author: Bielek, Boris; Szabó, Daniel; Klem, Josip; Kaniková, Kristína; Danková, Alžbeta
- title: Twin Rooms – new experimental test cells for testing advanced facade elements
- date: 2022-12-21
- words: 4683
- flesch: 45
- summary: Test cells consists of a solar laboratory – two-room for a comparative study of the effect of solar radiation and heat transfer on energy consumption and indoor climate. Twin rooms – new experimental test cells . .
- keywords: acta; advanced; air; building; cells; climate; climatic; conditions; construction; container; control; cooling; design; development; double; elements; energy; environment; equipment; experimental; experimental test; external; facade; facility; flows; heat; indoor; laboratory; materials; measured; measurements; new; outdoor; parameters; period; physical; polytechnica; power; proceedings; radiation; real; renewable; research; rooms; scale; skin; solar; south; space; structures; systems; technology; temperature; test; test cells; testing; thermal; time; transparent; twin; twin rooms; unit; university; ventilation; walls; water
- versions: original; plain text
- app01-8321
- author: Michálková, Daniela; Ďurica, Pavol
- title: Natural materials in building construction - annual evaluation
- date: 2022-12-21
- words: 2703
- flesch: 46
- summary: In this paper, we present values in the middle of structures’ height, apart from the interface between phenolic foam and OSB in S1, bearing in mind that we would have noth- ing to compare these values to in wall S1. According to Figure 8, wall S1 is capable of higher temperature regulation.
- keywords: air; assemblies; assessment; building; case; comparison; construction; energy; environmental; evaluation; exterior; figure; humidity; insulation; interior; log; materials; middle; natural; paper; period; regulation; relative; relative humidity; significant; spring; summer; temperature; terms; thermal; timber; values; wall; winter; wool
- versions: original; plain text
- app01-8326
- author: Santana-Sosa, Aída; Aichholzer, Martin; Mitrenova, Elena; Schachenhofer, Martin
- title: Exploring the State of Knowledge and Gaps Regarding Sustainability within Viennese Construction Industry
- date: 2022-12-21
- words: 5047
- flesch: 42
- summary: However, 43.0 % and 50.6 % of the respondents considered that there is enough expertise, where the 24.4 % and 14.1 % respectively considered there are no need for further knowledge building in this regard. Specific expertise on sustainable planning approaches and confidence on using tools and software for this purpose were reported by 32.5 % and 35.3 % respectively as aspects with high knowledge gaps will- ing to be assessed.
- keywords: analysis; applicable; approaches; areas; aspects; assessment; average; awareness; building; certification; companies; construction; current; cycle; data; definition; design; development; different; discussion; economic; education; energy; exchange; expertise; figure; gaps; group; highest; industry; information; key; knowledge; life; low; main; materials; needs; online; participants; participation; planning; project; public; renewable; respondents; sector; situation; specific; strategies; survey; sustainability; sustainable; tech; tools; topics; training; use; values; work
- versions: original; plain text
- app01-8366
- author: Allahvirdizadeh, Reza ; Andersson, Andreas ; Karoumi, Raid
- title: Estimating running safety factor of ballastless railway bridges using tail modelling
- date: 2022-08-18
- words: 5402
- flesch: 61
- summary: Rail bridges for speeds > 200 km/h. European Rail Research Institute 1999. Dynamics of railway bridges.
- keywords: acceleration; acta; addition; allahvirdizadeh; andersson; approach; article; assessment; ballastless; basic; bridges; calculated; computational; contact; conventional; corresponding; data; deck; design; distribution; engineering; estimated; estimation; factor; failure; figure; form; function; g(x; high; index; karoumi; length; limit; load; maximum; method; minimum; model; modelling; mse; number; polytechnica; probabilistic; probability; proceedings; rail; railway; railway bridges; random; reliability; running; safety; safety factor; samples; sigmoid; simulation; slab; span; speed; standard; state; structural; study; tail; threshold; track; train; values; variables; vertical
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- app01-8381
- author: Holický, Milan
- title: Reliability of a structure stricken by a tornado
- date: 2022-08-18
- words: 3174
- flesch: 59
- summary: Further development of reliability theory of tornado-stricken structures is recommended to be focused on the risk analysis of appropriate systems, of which the considered structures are elements, on the target failure probability, on detailed analysis of the probability distribution of tornado wind speed and their frequency during the required lifetime of the structures. In the case of N tornados during the required life- time the failure probability pf,N is given by the prod- uct: pf,N = pA ×
- keywords: analysis; ator; available; buildings; damage; design; distribution; exceedance; extent; failure; intensity; lifetime; number; probability; reference; reliability; skewness; speed; strike; structure; table; target; territory; tornado; value; wind
- versions: original; plain text
- app01-8384
- author: Jovanović, Balša ; Van Coile, Ruben ; Reynders, Edwin ; Lombaert, Geert ; Caspeele, Robby
- title: Maximizing information obtained from standardized fire tests using a Bayesian framework
- date: 2022-08-18
- words: 3977
- flesch: 57
- summary: Finally, the failure probability is calculated for different values of test failure times and compared. Using the updating procedure and Monte Carlo simulations, the failure probability under a real fire condition was calculated for the range of test failure times from 110 to 150 min and it ranges from 8.35 − 2.03 · 10−3.
- keywords: bayesian; calculated; capacity; case; concrete; curve; different; distributions; exposure; failure; failure probability; failure time; figure; fire; framework; furnace; heat; load; mean; model; natural; parameters; posterior; probabilistic; probability; procedure; properties; real; reinforcement; resistance; results; safety; slab; specific; standardized; standardized fire; strength; structural; temperature; test; thermal; time; uncertainty; updating; value
- versions: original; plain text
- app01-8385
- author: Kinne, Marko ; Farhan, Muhammad ; Schneider, Ronald ; Thöns, Sebastian
- title: Influence of the structural integrity management on the levelized cost of energy of offshore wind: a parametric sensitivity analysis
- date: 2022-08-18
- words: 4957
- flesch: 40
- summary: According to the EU strategy presented by the EU Commission in 2020, €800 billion will be invested in offshore re- newable energy over the next 30 years to increase the capacity of offshore wind energy from 12 GW to 60 GW by 2030 with an aim to reach a total capacity of 300 GW by 2050 As an example, in 2018 the LCoE of offshore wind energy in Germany was still higher than the LCoE of other main energy carrier such as brown coal [4].
- keywords: analysis; availability; average; cap; capacity; capital; costs; cvi; different; discount; dvi; energy; expenditures; exstruc; exturbine; factor; farm; global; index; influence; input; inspection; integrity; lcoe; life; management; model; monitoring; nominal; number; nwt; offshore; offshore wind; operational; operational expenditures; order; output; parameters; random; range; rate; renewable; sensitivity; sensitivity analysis; service; sim; structures; study; support; survey; table; turbine; value; variance; water; wind; wind farm; wind turbine; year
- versions: original; plain text
- app01-8386
- author: Kraus, Michael A. ; Bischof, Rafael ; Kaufmann, Walter ; Thoma, Karel
- title: Artificial intelligence - finite element method - hybrids for efficient nonlinear analysis of concrete structures
- date: 2022-08-18
- words: 5517
- flesch: 53
- summary: For model selection, inspection of the Taylor dia- grams in Fig. 7 suggests that all described AI models possess great approximation quality with slight dif- ferences, where kNN outperforms ResNet and LGBM (in the order of decreasing approximation quality). The performances of different AI models according to the mentioned criteria are reported in Tab. 6 for configuration CF 0 (without reinforcement) and in Tab. 7 for configuration CF 1 (with reinforcement).
- keywords: acta; algorithms; analysis; ansys; bayesian; cmm; component; concrete; data; database; dataset; deep; design; different; efficient; element; features; fem; figure; finite; hybrids; hyperparameters; k11; kaufmann; knn; kraus; learning; lgbm; lightgbm; machine; mae; material; methods; model; networks; neural; non; nonlinear; number; numerical; optimization; paper; performance; phase; polytechnica; predictive; proceedings; project; regression; reinforcement; research; resnet; resp; results; rmse; selection; set; stiffness; strain; stress; structural; surrogate; tab; table; tensor; thoma; training; usermat; values
- versions: original; plain text
- app01-8394
- author: McLeod, Christina Helen
- title: Establishing model uncertainty of SLS reinforced concrete crack models applied to load-induced cracking
- date: 2022-08-18
- words: 5817
- flesch: 57
- summary: Supervisor Prof RI Gilbert, 2010. 134 https://doi.org/10.1016/j.probengmech.2015.09.008 https://doi.org/10.1016/j.probengmech.2015.09.008 https://doi.org/10.1002/suco.201200060 https://doi.org/10.1002/suco.201900036 https://doi.org/10.1002/suco.201700248 https://doi.org/10.1016/j.engstruct.2020.110979 https://doi.org/10.1016/j.engstruct.2020.110979 Acta Polytechnica CTU Proceedings 36:127–134, 2022 1 Introduction 2 Model Uncertainty Treatment 3 Deterministic analysis of predicted crack width 3.1 BS 8007 crack model 3.2 EN 1992 crack model 3.3 MC 2010 crack model 4 Quantification of crack model uncertainty 4.1 Experimental database 5 Discussion on Model Uncertainty Quantification 5.1 Short term Tension 5.2 Long term tension 5.3 Evaluation of crack models - Pearson's correlations 5.4 Comparison to Flexure Model Uncertainty 6 Summary and concluding remarks References In addition, crack models are mostly empirically or semi-empirically derived so have not been assessed to any extent in reliability terms.
- keywords: bars; case; concrete; correlations; crack; crack model; crack width; cracking; data; database; design; distribution; factor; flexural; induced; limit; load; loading; long; maximum; mcleod; mean; model; model uncertainty; parameters; pearson; probabilistic; ratio; reinforcement; reinforcing; reliability; sample; section; short; significant; sls; south; statistical; steel; strain; structures; table; tension; term; term tension; ties; uncertainty; values; variation; water; width; wrs
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- app01-8398
- author: Way, Andrew; de Koker, Nico ; Viljoen, Celeste
- title: Effect of decision parameter efficiency on target reliability
- date: 2022-08-18
- words: 3942
- flesch: 50
- summary: 36/2022 Effect of decision parameter efficiency on target reliability limit states and probabilities of failure for ULS and SLS The various ULS failure mechanisms in Table 1 are chosen to illus- trate the effect of decision parameter efficiency on target reliability, in comparison to that obtained from the generic cost optimization.
- keywords: case; column; considered; cost; decision; decision parameter; design; effect; efficiency; equation; failure; form; generic; high; limit; linear; low; moderate; optimization; parameter; reliability; research; resistance; rod; safety; sls; specific; state; structures; target; target reliability; uls; variation
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- app01-8401
- author: Van Coile, Ruben ; Jovanović, Balša ; Chaudhary, Ranjit Kumar ; Deckers, Xavier ; Lucherini, Andrea
- title: Simplified modelling of the performance of concrete tunnels during fire and post-fire damage classification
- date: 2022-08-18
- words: 3777
- flesch: 57
- summary: The evaluation of concrete fire damage through the 300◦C isotherm (D300) and residual deformations is recommended. Heat release rate measurements in tunnel fires.
- keywords: acta; adopted; assessment; case; ceiling; class; concrete; cooling; cross; damage; data; decay; design; duration; exposure; figure; fire; following; heating; load; modelling; nominal; performance; permanent; phase; polytechnica; post; probabilities; probability; proceedings; rate; reference; reinforcement; repair; residual; results; risk; rws; safety; section; spalling; start; states; strength; structural; surface; table; temperature; thermal; tunnel; wall
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- app01-8402
- author: Thoma, Sebastian ; Fischer, Oliver
- title: Influence of plastic tension chord deformation on the shear capacity of prestressed beam elements
- date: 2022-08-18
- words: 5202
- flesch: 51
- summary: Selected principal compressive strain and longitudinal strain εx are of the same order of magnitude in absolute terms and have an influence on the compression strut angle according to their difference. Since the proportion of longitudinal strain due to shear εx,V is already formulated as a function of the compressive strut angle θ, equation 1 is already part of the constrained nonlinear optimisation.
- keywords: account; analysis; assumption; beam; bearing; bridges; capacity; case; chord; compressive; compressive strength; concrete; concrete compressive; contribution; cross; deformation; effective; elements; equation; evaluation; experimental; factor; field; figure; fischer; forces; gsa; importance; index; individual; influence; input; interaction; load; longitudinal; method; model; moment; numerical; order; parameter; plastic; possible; prestressed; principal; proceedings; ratio; reduction; reinforcement; response; results; section; sensitivity; sequence; shear; shear reinforcement; shear strength; sobol; strain; strength; tendon; tension; total; values; variance; web; εc2
- versions: original; plain text
- app01-8403
- author: Thienpont, Thomas ; Van Coile, Ruben; De Corte, Wouter ; Caspeele, Robby
- title: Structural reliability of hollow core slabs considering compressive membrane action
- date: 2022-08-18
- words: 4083
- flesch: 55
- summary: Compressive membrane action can considerably improve the load bearing capacity of concrete slabs and beams in case of excessive loaded due to an accidental event. The above result highlights the importance of con- sidering the stochastic nature of the concrete tensile strength in a probabilistic assessment of concrete slabs prone to shear failure.
- keywords: action; capacity; case; compressive; concrete; core; curves; displacement; element; experimental; failure; figure; finite; force; hc1; hollow; horizontal; influence; large; load; material; max; membrane; model; mpa; numerical; precast; probabilistic; reliability; restrained; results; setup; slabs; steel; stiffness; strength; structural; table; tensile; test; ultimate
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- app01-8404
- author: Thabethe, Sibongiseni
- title: Probabilistic safety assessment of Koeberg spent fuel pool
- date: 2022-08-18
- words: 3072
- flesch: 57
- summary: Analysis of the inherent response of nuclear spent fuel pools. Introduction Highly radioactive spent fuel assemblies that are un- loaded from the nuclear reactor core are typically stored for a certain period in cooling water pools called spent fuel pools (SFP).
- keywords: accident; analysis; boiling; cooling; damage; diversion; energy; event; failure; figure; flow; fuel; human; inventory; jpp; jps; koeberg; level; loss; model; nuclear; operator; pipe; plant; pool; power; psa; ptr; pumps; quantification; safety; sed; sequence; sfp; suction; system; tree; water
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- app01-8405
- author: Teixeira, Rui ; Martinez-Pastor, Beatriz ; Nogal, Maria ; Micu, Alexandra; O’Connor, Alan
- title: The role of multi-fidelity modelling in adaptation and recovery of engineering systems
- date: 2022-08-18
- words: 4912
- flesch: 48
- summary: While significant research has been di- rected to the need for accurate system models that can 229 R. Teixeira, B. Martinez-Pastor, M. Nogal et al. When the population size of 100 individuals is applied jointly with the convergence of the fitness function for 50 generations, the effective- ness of the HF DM making decreases substantially (decision times increase by more than 3); while in practical terms the MF model is largely unaffected by this.
- keywords: accurate; adaptation; analysis; application; capacity; context; cost; damage; data; decision; different; engineering; fast; fidelity; figure; information; kriging; links; making; model; modelling; multi; n(ld; network; nogal; operation; optimal; optimization; possible; prediction; probability; recovery; research; response; results; role; scenario; scheme; slow; system; teixeira; time; traffic
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- app01-8406
- author: Teichgräber, Max ; Straub, Daniel
- title: A study on the effects of hidden safety when assessing existing structures
- date: 2022-08-18
- words: 4982
- flesch: 63
- summary: However, a relative comparison to the probabilities of failure of the bridges designed or accepted/rejected by advanced traffic load models is valid, since the probabilities of failure are calculated on the same basis. An additional safety factor would be needed if advanced traffic load models were to be used for bridge design.
- keywords: accepted; advanced; advanced traffic; analysis; bridge; bridge structures; case; characteristic; coefficient; design; distribution; effects; estimation; eurocode; factor; failure; figure; finc; following; hidden; load; material; mean; model; modeling; partial; probability; reassessment; safety; standard; structures; study; target; traffic; traffic load; uncertainty; value; variation; θec
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- app01-8407
- author: Sýkora, Miroslav ; Botte, Wouter ; Caspeele, Robby; Diamantidis, Dimitris ; Muttoni, Aurelio ; Steenbergen, Raphaël D.J.M.
- title: Probabilistic models for resistance variables in fib Model Code 2020 for design and assessment
- date: 2022-08-18
- words: 6511
- flesch: 54
- summary: For MC design based on fck, this effect plays no role and Equation 11 reduces to ρc,des = γC,des Ed,des(κ)/[γC,EC Ed,EC (κ)]. For MC design based on dnom, Equation 12 reduces to ρs,des = γS,des Ed,des(κ)/[γS,EC Ed,EC (κ)].
- keywords: area; assessment; background; basic; case; characteristic; code; columns; compressive; concrete; conversion; depth; design; dnom; draft; effective; effects; equation; eurocodes; existing; factors; fib; figure; geometry; information; levels; load; lower; measurements; model; new; normal; partial; partial factors; probabilistic; reference; reinforcement; reliability; requirements; resistance; section; situ; situations; strength; structures; table; target; uncertainties; uncertainty; values; variables
- versions: original; plain text
- app01-8408
- author: Swaalf, Franka E.M. ; Steenbergen, Raphaël D. J. M.
- title: Full probabilistic design of a submerged floating tunnel and format for partial safety factors
- date: 2022-08-18
- words: 4355
- flesch: 65
- summary: The calculated factors from the full probabilistic design are compared with the general recommended partial factors for strength and resistance from Eurocode EN1990. The aim of this paper is to perform a full probabilis- tic calibration of partial factors for most relevant limit states of the SFT.
- keywords: analysis; concrete; cross; design; en1990; eurocode; factors; failure; figure; force; general; limit; load; loading; log; longitudinal; mechanisms; model; norm; parameters; partial; permanent; point; probabilistic; reliability; research; resistance; safety; section; sft; shear; slackening; strength; structure; submerged; system; table; tethers; tube; tunnel; unfavorable; value; variable
- versions: original; plain text
- app01-8409
- author: Simwanda, Lenganji ; De Koker, Nico ; Viljoen, Celeste ; Babafemi, Adewumi John
- title: Structural reliability of existing rc beams strengthened with UHPFRC tensile layers
- date: 2022-08-18
- words: 3808
- flesch: 49
- summary: The first being to assess the viability of the stress-block section analysis in the estimation of nominal bending moment capacity of RC beams strengthened on the tensile side with UHPFRC layers, and the second being to present and apply a statistical methodology for conducting reliability analysis of existing RC beams strengthened with UHPFRC tensile layers. Other conceptual ideas include additional layers on the compression side or even including on the sides (referred to as jackets) to improve the bending resistance of RC beams.
- keywords: analysis; analytical; approach; area; beams; block; capacity; concrete; corrosion; deterioration; engineering; fiber; fibre; figure; high; icorr; index; iso; koker; layer; load; lognormal; methodology; model; moment; mpa; operation; performance; present; rc beams; rebar; reliability; required; resistance; section; steel; stochastic; strengthened; strengthening; stress; structures; tensile; time; uhpfrc; uhpfrc layer; ultra; uncertainty; upgrading; work
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- app01-8423
- author: Thöns, Sebastian
- title: Structural assessment and expected utility gain
- date: 2022-08-18
- words: 5501
- flesch: 48
- summary: This basic distinction leads to the denotation of utility actions and system state actions, respectively. In the context of existing structures, examples for system state actions are e.g., repair, replacement, strengthening and loading actions.
- keywords: action; action value; analysis; assessment; c(ak; condition; consequence; cost; damage; decision; engineering; equation; expected; figure; formulation; function; health; implementation; information; load; management; max; measurement; model; modelling; monitoring; performance; probabilistic; reduction; repair; replacement; resistance; section; state; strengthening; structural; system; system state; threshold; thöns; u(xl; uncertainties; uncertainty; usp; utility; utility action; value
- versions: original; plain text
- app01-8429
- author: Montet, Frédéric; Pongelli, Alessandro; Rial, Jonathan; Schwab, Stefanie; Hennebert, Jean; Jusselme, Thomas
- title: Energy performance estimation for large building portfolios with machine learning-based techniques
- date: 2022-12-21
- words: 4681
- flesch: 61
- summary: In this context, establishing priorities in refurbishment strategies at the scale of a city or a group of buildings is important. This work includes (a) the integration of a knowledge database thanks to the Swiss CECB energy performance certificates, referencing more than 70 000 buildings, (b) the preparation of a training data set through the selection of relevant physical characteristics of buildings (input) and the corresponding energy consumption labels (output), (c) the development of predictive models used in a supervised way, (d) their evaluation on an independent test set.
- keywords: accuracy; acta; available; average; balanced; best; building; catboost; cecb; certificates; class; classes; cleaning; ctu; data; dataset; energy; estimation; example; expert; exploration; figure; fribourg; google; heat; important; learning; machine; method; model; number; online; optimization; order; parameters; performance; polytechnica; possible; prediction; proceedings; regbl; result; samples; score; second; section; selection; switzerland; table; value; variables; work
- versions: original; plain text
- app01-8475
- author: Cucuzza, Marco; Di Stefano, Andrea Giuseppe; Iannaccone, Giuliana; Masera, Gabriele
- title: A guideline to support the use of off-site solutions for façade retrofitting through BIM-enabled processes
- date: 2022-12-21
- words: 4345
- flesch: 40
- summary: The integration of rules and constraints pro- vided by all the actors – including manufacturers, architects, construction site managers and façade de- signers – at the beginning of the process, together with the BIM willingness to increment information across the stages, can be a step ahead in the adop- tion of Knowledge-Based Engineering in the design for manufacture of prefabricated façades. Information flow for panelisation process.
- keywords: acta; activities; adoption; agreement; approach; bim; building; case; chain; column; components; construction; data; design; development; digital; early; end; energy; engineering; european; fabrication; façade; flow; framework; grant; guideline; industry; information; installation; integration; management; manufacturer; masera; mmc; model; panelisation; panels; polytechnica; possible; prefabricated; proceedings; process; production; project; related; renovation; research; retrofit; retrofitting; site; solutions; specific; stage; step; study; supply; support; technical; technological; technology; thermal; time; tools; use
- versions: original; plain text
- app01-8478
- author: Bantová, Sylva; Ostrý, Milan; Struhala, Karel
- title: Durability of latent heat storage systems
- date: 2022-12-21
- words: 3099
- flesch: 56
- summary: Keywords: Phase change materials (PCMs), compatibility of materials, metal corrosion, mass changes, container, latent heat storage systems, durability, energy flexibility. Two organic-based and two inorganic-based phase change materials were selected for tests of compatibility with selected metals (aluminium, copper and brass) and plastics (PP-H, PE-HD, and PVC-U).
- keywords: case; changes; cm−2; compatibility; copper; corrosion; energy; evaluation; experiment; figure; group; heat; immersion; inorganic; latent; loss; mass; materials; metal; method; pcms; phase; plastics; results; rubitherm; samples; selected; sp25; storage; table; test; time; values; weight
- versions: original; plain text
- app01-8479
- author: Řeřicha, Petr; Fajman, Petr; Davis, Lucy
- title: Rescue of a stone bridge with respect to current condition and standards
- date: 2022-12-21
- words: 3318
- flesch: 61
- summary: Finite element bridge models It is difficult to account in a single complex model for the interaction of the spans and piers, the transverse asymmetry of the load and structure and non-linear arch behavior. Full 3D bridge model with two tandem axle forces. displacements).
- keywords: 3d model; acta; application; arch; arch bridges; arches; assessment; available; backfill; bridge; compression; concrete; condition; correction; czech; design; ecological; elastic; elements; factors; fem; figure; finite; limit; linear; load; load model; masonry; masonry arch; material; method; model; non; pavement; piers; polytechnica; ponikla; proceedings; section; span; standards; stone; stone arch; stone bridge; stresses; structure; table; tension
- versions: original; plain text
- app01-8490
- author: Procházka, Michal; Zušťák, Zbyněk; Svoboda, Pavel
- title: Improving the properties of unburned earth to control the interior microclimate
- date: 2022-12-21
- words: 4086
- flesch: 67
- summary: The article concerns the problematics of unburned earth used as material for moulding formwork or clay plaster with lowered contraction, especially about interior unburned earth plaster with the heightened percentage of clay and therefore improved sorption abilities. In the case of the use of unburned earth as clay plasters, the approximate proportion of clay is from 10 to 15 % by weight.
- keywords: acta; binding; building; clay; consistency; ctu; dose; earth; figure; fraction; gravel; material; maximum; microclimate; minerals; mixture; particles; plasters; plasticizer; polytechnica; praha; proceedings; procházka; production; properties; proportion; range; ratio; sand; second; shrinkage; sorption; step; suitable; table; test; total; unburned; unburned earth; unburnt; unfired; use; water; weight; čsn
- versions: original; plain text
- app01-8555
- author: Adámek, Tomáš
- title: SUBSALS: a subchannel thermal-hydraulic code for IRT type fuel analysis
- date: 2022-12-06
- words: 5001
- flesch: 56
- summary: To include a surface roughness ε in the calculation, Zigrang-Sylvester’s approximation [8] to Colebrook-White correlation, is implemented as: 1 √ ft. = −2 log10 { ε 3, 7dh + 2, 51 Re[ 1, 14 − 2 log10 ( ε dh + 21, 25 Re0,9 )]} , (7) which is the same form as implemented in the stan- dard thermal-hydraulic codes, e.g. system code RE- LAP5/MOD3 [9] or subchannel code CTF Results of water velocity, water temperature and cladding temperature distributions calculations were compared from both codes with uniform radially- azimuthal power profile, hence total heat-flux to each subchannel in individual axial nodes was the same.
- keywords: acta; analysis; assemblies; axial; azimuthal; boundary; calculations; cladding; code; coefficient; comparison; computational; conditions; conservation; coolant; correlation; crossflow; ctu; czech; development; difference; distribution; equations; error; factor; figure; friction; fuel; geometry; heat; hydraulic; inlet; irt; irt-4; maximal; m·s−1; nuclear; number; n−1; polytechnica; position; power; pressure; proceedings; profile; program; reactors; relative; research; safety; specific; split; subchanflow; subchannel; subsals; system; temperature; thermal; transfer; tube; turbulent; type; velocity; water
- versions: original; plain text
- app01-8556
- author: Ansorge, Martin; Novák, Jan; Majerle, Mitja; Kozic, Ján
- title: The characterization of the collimated beams of fast neutrons with the clid detection system
- date: 2022-12-06
- words: 3933
- flesch: 56
- summary: Keywords: NPI, collimated fast neutron beams, cyclotron U-120M, CLID, Proton-Recoil-Telescope. Licensed under a CC-BY 4.0 licence Published by the Czech Technical University in Prague THE CHARACTERIZATION OF THE COLLIMATED BEAMS OF FAST NEUTRONS WITH THE CLID DETECTION SYSTEM Martin Ansorgea, b, ∗, Jan Novákb, Mitja Majerleb, Ján Kozica, b a Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, V Holešovičkách 747/2, 180 00 Prague 8, Czech Republic b Nuclear Physics Institute of the Czech Academy of Sciences, 250 68 Řež, Czech Republic ∗ corresponding author: ansorge@ujf.cas.cz Abstract.
- keywords: activation; angle; beam; beryllium; carbon; chamber; clid; collimator; converter; cross; cyclotron; czech; data; detection; detectors; differential; energy; experimental; fast; figure; irradiation; jendl4.0; laboratory; library; light; mcnpx; measured; measurements; method; mev; neutron; new; nuclear; particle; physics; position; production; proton; prt; reactions; sample; section; set; spectra; spectrum; system; table; target; technique; telescope; thick; tof; values
- versions: original; plain text
- app01-8558
- author: Gonzalez, Jheffry; Ševecek, Martin
- title: Modelling of fission gas release in UO2 doped fuel using transuranus code
- date: 2022-12-06
- words: 4108
- flesch: 60
- summary: Rod 1 UO2 doped fuel diffusivity case A (b) . Rod 1 UO2 doped fuel diffusivity case B (c) .
- keywords: 716; average; burnup; case; code; conductivity; cooper; data; difference; diffusion; diffusivity; experiment; fgr; figure; fission; fission gas; fuel; gas; gas release; grain; halden; ifa; l708; measured; model; modelling; nuclear; operation; pressure; reactor; release; results; rod; rods; scip; standard; table; temperature; test; thermal; transuranus; uo2; work
- versions: original; plain text
- app01-8559
- author: Jíška, Pavel; Frýbort, Jan
- title: Proposal of point-wise power reconstruction for IRT-4M fuel assemblies in coupled Monte-Carlo calculations
- date: 2022-12-06
- words: 4239
- flesch: 53
- summary: In the Figure 3, reference values of power density im- balance factors k(i)q for fuel tubes cells in core positions E6 and B6 are depicted. These notations will be used throughout this work for a simplification: (1.) cell-based model where the detailed FA model is utilized and a mesh of cell detectors (MOCD) is directly included in the main universe as individual fuel meat cells, (2.) universe-based model where the simplified FA model is utilized and a mesh of cell detectors (MOCD) is included in a separate universe as mesh of individual detector cells over- lapping the main universe, (3.)
- keywords: assemblies; assembly; basis; carlo; cartesian; cell; center; characteristics; code; computational; coordinates; core; czech; data; density; detailed; detectors; different; distribution; figure; fuel; function; icmd; increase; interpolation; irregular; irt-4; mass; meat; mesh; meshes; method; model; monte; neutron; point; position; power; power reconstruction; radial; rbf; reactor; reconstruction; reference; research; serpent2; simplified; simulation; standard; subsals; table; technical; testing; time; total; tube; universe; values; wise
- versions: original; plain text
- app01-8562
- author: Novotný, Pavel
- title: Determination of radionuclide impurities in pure beta radiation sources by semiconductor spectrometry
- date: 2022-12-06
- words: 3093
- flesch: 53
- summary: The paper presents a technique for the determination of radionuclide impurities in the mixtures of pure beta-emitting nuclides. The proposal of a method for the identification and quantification of radionuclide impurities in the mix- tures of pure beta-emitting nuclides was one of the ob- jectives of the recently completed MetroBeta project, which was supported by the European Metrology Pro- gramme for Innovation and Research (EMPIR)
- keywords: 89sr; 90sr/90y; activity; analysis; beta; beta spectra; carlo; detector; endpoint; energy; figure; higher; impurities; impurity; interest; kev; lower; main; measured; measurement; method; metrology; mixed; mixtures; monte; nuclides; pure; radiation; radioactive; radionuclide; ratio; region; response; results; samples; sources; spectra; spectrum; stripping; table; uncertainty; values; window
- versions: original; plain text
- app01-8564
- author: Pinta, Jan
- title: On the ongoing computation of the LVR-15 reactor fuel burnup
- date: 2022-12-06
- words: 3813
- flesch: 58
- summary: In fact, there is a majority of fuel assemblies with nonzero burnup contained inside the LVR-15 reac- tor core at the beginning of each cycle. Overview of fuel assemblies with this attribute is listed in Table 2 alongside with the in- formation whether any particular fuel assembly was present in the corresponding operation cycle.
- keywords: 239pu; 65c666; 85a710; advanced; approximation; assemblies; atomic; burnup; calculated; calculation; composition; computational; computational process; configuration; considered; control; core; cycle; data; densities; figure; file; fuel; fuel assemblies; infinite; initial; input; isotopic; k216; k229; lattice; library; lvr-15; model; nuclear; nuclides; ongoing; operation; process; reactor; results; scheme; serpent; standard; step; time; type; × ×
- versions: original; plain text
- app01-8565
- author: Šikl, Matěj
- title: Reactor criticals and spent fuel systems similarities
- date: 2022-12-06
- words: 2658
- flesch: 49
- summary: Even though similarities were high enough to stor- age pool only, possibility of validation of code for spent fuel systems calculation was proved when reac- tor criticals were used. Many conservative assumptions for subcriticality assessment calculations have to be made in current calculations of spent fuel storage systems.
- keywords: assessment; available; benchmarks; burnup; calculations; castor; code; comparison; composition; conservative; criticals; data; experiments; fresh; fuel; kef; models; nuclear; paper; pool; reactor; safety; scale; sensitivity; similarities; similarity; states; storage; subcriticality; systems; tests; tsunami; validation
- versions: original; plain text
- app01-8611
- author: Zavřel, Vojtěch; Matuška, Tomáš; Slanina, Petr
- title: Experimental monitoring of autonomous curtain walling facade module
- date: 2022-12-21
- words: 3863
- flesch: 55
- summary: The demonstration façade unit is compounded from three main modules: an opaque module with BIPV and integrated flat-plate batteries, an opaque module with BIPV and façade integrated Peltier AC unit and a transparent module with BIPV and active shading device. Metering definition Unit Metering definition Unit Peltier cells consumption kWh Peltier AC unit inlet – interior °C Fans consumption kWh Peltier AC unit inlet – exterior °C Back-up heating consumption kWh Peltier AC unit outlet – interior °C Back-up cooling – fan consumption kWh Peltier AC unit inlet – exterior °C Monitoring system consumption kWh Back-up cooling – inlet water temperature °C LED lighting consumption kWh Back-up cooling – outlet water temperature °C Total electricity consumption kWh Back-up cooling – water mass flow °C PV production kWh Indoor temperature °C Battery supply kWh Indoor relative humidity % PV surplus metering via electric heater kWh Outdoor temperature °C Outdoor relative humidity % Solar irradiance on façade - exterior W/m2 Table 1.
- keywords: ac unit; active; air; autonomous; autonomy; battery; bipv; building; capacity; cells; conditioning; consumption; cooling; cop; current; curtain; czech; demo; design; eer; efficiency; energy; experimental; exterior; facility; fan; façade; figure; heating; high; integrated; interior; kwh; load; module; monitoring; operation; peltier; performance; power; prague; prototype; self; shading; site; solar; system; table; temperature; testing; unit; winter
- versions: original; plain text
- app01-9159
- author: Ďureje, Jakub; Prošek, Zdeněk; Trejbal, Jan; Potocký, Štěpán; Hlůžek, Radim
- title: Treatment of polypropylene microfibers by atmospheric and low-pressure plasma – application to a reinforced cement composite containing recycled concrete
- date: 2023-07-24
- words: 2400
- flesch: 58
- summary: Polypropylene surface modification by low pressure plasma to increase adhesive bonding: Effect of process parameters. For the same duration, the fibers were modified in atmospheric pressure plasma, where the working was atmospheric air.
- keywords: atmospheric; cement; composite; concrete; czech; dynamic; effect; elasticity; energy; fibers; figure; fracture; low; mechanical; microfibers; modification; modulus; oxygen; plasma; polypropylene; polytechnica; prague; pressure; recycled; samples; sem; specimens; surface; test; treatment; water; weight
- versions: original; plain text
- app01-9211
- author: Hálková, Barbora; Schmidt, Jaroslav
- title: Modelling of laminated glass interlayer by fractional viscoelasticity
- date: 2023-07-24
- words: 3123
- flesch: 58
- summary: Maxwell model. Keywords: Laminated glass, polymer interlayer, theory of viscoelasticity, fractional viscoelasticity, springpot, generalized Maxwell model, fractional calculus, storage modulus. 1.
- keywords: behaviour; cell; chain; complex; data; element; experimental; figure; following; fractional; fractional maxwell; generalized; glass; interlayer; laminated; limit; material; maxwell; maxwell chain; models; modulus; parameters; relaxation; rheological; springpot; standard; storage; strain; theoretical; time; viscoelasticity; viscous
- versions: original; plain text
- app01-9213
- author: Chalupová, Jana; Němeček, Jiří; Hybášek, Vojtěch; Pommer, Vojtěch; Němeček, Jiří
- title: Measurement and evaluation of cement paste porosity by electrochemical impedance spectroscopy
- date: 2023-07-24
- words: 4015
- flesch: 56
- summary: Resistance and capacitance of cement paste samples evaluated with different equivalent circuit models: EC, SEC. 40/2023 Measurement and evaluation of cement paste porosity . .
- keywords: acta; archie; c-14d; c-28d; calculated; capacitance; capillary; cement; cement paste; circuit; concrete; conductive; connected; current; czech; data; different; eis; electric; electrochemical; electrodes; equivalent; evaluation; figure; helium; hydration; impedance; materials; matrix; measurement; methods; model; nyquist; paste; path; pores; porosity; prague; rccp; rcp; research; resistance; results; samples; sec; simplified; spectroscopy; spectrum; university; values; water
- versions: original; plain text
- app01-9215
- author: Pavelcová, Veronika; Janda, Tomáš
- title: Extracting general knowledge of model parameters for clays out of numerous laboratory tests
- date: 2023-07-24
- words: 4044
- flesch: 52
- summary: In comparison to high-plasticity clay, only moderate correlations between Atterberg’s limits and model parameters have been observed for low-plasticity clay. Then a method of how could existing data be used to obtain general knowledge of the prop- erties of these individual parameters was presented in Section 4 and finally, the paper summarized extracted basic statistical data of model parameters with respect to USCS classification in Section 5.
- keywords: acta; advanced; angle; application; basic; calibration; cam; clay; clay model; compression; constitutive; critical; data; excalibre; figure; file; hypoplastic; hypoplastic clay; hypoplastic model; individual; laboratory; limit; line; material; material parameters; mcs; mean; model; model parameters; modified; ncl; normal; parameters; plasticity; preconsolidation; pressure; protocols; shear; slope; soil; state; stress; table; test; value; void; σeffm
- versions: original; plain text
- app01-9216
- author: Tichá, Petra; Domonkos, Mária; Rácová, Zuzana; Demo, Pavel
- title: Application of cold atmospheric plasma for mold inactivation
- date: 2023-07-24
- words: 2822
- flesch: 49
- summary: The aim of this study was to present the new environmentally friendly method (cold atmospheric plasma treatment) for decontamination of indoor environments contaminated by mold spores, with the potential to become an effective replacement for conventional methods, such as ultraviolet-C (UV-C) germicidal irradiation. This study demonstrated that cold atmospheric plasma is a more effective method for reducing mold spores on agar compared with germicidal UV-C irradiation.
- keywords: acta; agar; analysis; area; aspergillus; atmospheric; barrier; brasiliensis; cap; cold; control; czech; days; dcsbd; decontamination; discharge; exposure; extract; figure; germicidal; growth; hours; image; inactivation; indoor; inoculation; irradiation; malt; mold; petri; plasma; plates; power; prague; pressure; results; samples; spores; surface; time; treatment
- versions: original; plain text
- app01-9217
- author: Vozáb, Jan; Vorel, Jan
- title: Generation of LDPM structure formed by Voronoi cells
- date: 2023-07-24
- words: 2668
- flesch: 63
- summary: In the Figure 2 they are shown Figure 4. Structure of circular Voronoi particles before composition. Structure of circular Voronoi particles after composition.
- keywords: acta; apollonius; boundaries; boundary; cells; circle; circular; composition; concrete; diagram; different; discrete; effect; equations; figure; generation; grains; internal; jan; ldpm; materials; method; model; particles; points; polytechnica; proceedings; size; structure; system; use; vorel; voronoi
- versions: original; plain text
- app01-9218
- author: Žalská, Tereza; Šejnoha, Michal
- title: Return mapping scheme for the Hoek-Brown model with tension cut-off
- date: 2023-07-24
- words: 3974
- flesch: 64
- summary: = σ1 − σt, (15) T2(σ2,σt) = σ2 − σt, (16) T3(σ3,σt) = σ3 − σt, (17) where σt ≤ σt is the prescribed tensile strength. − σ3 − σci ( s − mb σ1 σci )a , (4) where σ1 and σ3 are the maximal and minimal ef- fective principal stresses, respectively.
- keywords: algorithm; associated; brown; condition; criterion; figure; function; hoek; increment; mapping; model; non; plastic; plasticity; potential; procedure; rankine; return; rock; sin; space; step; strain; strength; stress; stresses; surface; tensile; trial; triaxial; yield; yield surface; σ pl; σci; σtr1
- versions: original; plain text
- app01-9221
- author: Lebeda, Martin; Kabele, Petr
- title: Analysis of tunnel excavation based on linear DFN-FEM modelling
- date: 2023-07-24
- words: 4600
- flesch: 53
- summary: In the rock mass with vertical fractures, the higher initial horizontal stress results in horizontal convergence, which is signifi- cantly larger than the vertical one (Figure 7). According to the current state of art in the field of rock mechanics, brittle structures (or fractures, in- cluding faults and joints) have the dominant effect on the overall mechanical response of the rock mass
- keywords: acta; analysis; angle; averaging; axis; calculated; convergence; dfn; different; direction; displacement; distribution; element; excavation; fem; figure; finite; fractures; horizontal; incremental; initial; kabele; linear; mass; means; mechanics; model; modelling; network; normal; overall; parameters; perpendicular; polytechnica; pressure; principal; procedure; proceedings; properties; rock; rock mass; rve; section; shape; size; state; stiffness; stress; study; table; tunnel; tunnel excavation; vertical; volume
- versions: original; plain text
- app01-9226
- author: Veselý, Jakub; Šmilauer, Vít
- title: Hygro-mechanical model for concrete pavement with long-term drying analysis
- date: 2023-07-24
- words: 4002
- flesch: 59
- summary: Performance evaluation of concrete pavement slab considering creep effect by finite element analysis. Concrete slab should be able to cope with the resulting fracture process zone since the slab is contin- uously supported and controlled by displacement to a large extent.
- keywords: //doi.org/10.1016; acta; analysis; autogenous; behavior; cem; concrete; conditions; creep; ctu; czech; days; drying; early; elements; engineering; equation; figure; gauges; highway; https; humidity; hygro; interface; international; layer; load; location; long; material; mechanical; model; moisture; monitoring; mpa; mps; parameters; pavement; polytechnica; prague; proceedings; profile; relative; shrinkage; simulation; slab; strain; stress; subsoil; temperature; tensile; term; thermal; thermo; time; transport; years; šmilauer
- versions: original; plain text
- app01-9231
- author: Sekavová, Hana; Prošek, Zdeněk; Tesárek, Pavel
- title: Dependence of mechanical and thermal properties on the composition of lightweight gypsum composites
- date: 2023-07-24
- words: 2778
- flesch: 58
- summary: Another advantage of the whole concept of produc- ing gypsum blocks based on recycled gypsum waste is that waste from the production of gypsum blocks can be incorporated into the mix as a primarily in- ert material. One of the ways to use the treated gypsum waste is in gypsum mixtures for the production of gypsum blocks.
- keywords: acta; additive; average; blocks; building; bulk; coefficient; compressive; construction; ctu; czech; density; figure; foam; gypsum; laboratory; lightweight; materials; mechanical; microfibres; mixtures; new; plasterboard; polytechnica; prague; proceedings; production; properties; recyclate; recycling; samples; sets; situ; strength; terms; thermal; university; use; values; waste; water
- versions: original; plain text