Vol. 12 No. 1 June 2021 ComTechComTech Computer, Mathematics and Engineering Applications P-ISSN: 2087-1244 E-ISSN: 2476-907X Editor in Chief Evaristus Didik Madyatmadja Bina Nusantara University, Indonesia Managing Editors Nico Surantha Bina Nusantara University, Indonesia Christian Harito Bina Nusantara University, Indonesia International Editor Board Aminul Islam Technical University of Denmark (DTU), Denmark Bernardo Nugroho Yahya Hankuk University of Foreign Studies, South Korea Mahardhika Pratama Nanyang Technological University, Singapore Muhammad Syafrudin Dongguk University, South Korea Natanael Karjanto Sungkyunkwan University, South Korea Nurul Huda Universiti Malaysia Sabah, Malaysia Wahyu Caesarendra Universiti Brunei Darussalam, Brunei Darussalam Yogi Ahmad Erlangga Zayed University, United Arab Emirates Leon A. Abdillah Bina Darma University, Indonesia Fergyanto E. Gunawan Bina Nusantara University, Indonesia Ingrid Suryanti Surono Bina Nusantara University, Indonesia Rinda Hedwig Bina Nusantara University, Indonesia Language and Layout Editor Eka Yanti Pangputri Bina Nusantara University, Indonesia Dina Nurfitria Bina Nusantara University, Indonesia Shavira Sarashita Bina Nusantara University, Indonesia Holil Bina Nusantara University, Indonesia Atmawati Bina Nusantara University, Indonesia Secretariat Dewi Novianti Bina Nusantara University, Indonesia Description ComTech is a semiannual journal, published in June and December. ComTech focuses on various issues spanning in Information Systems, Architecture, Civil Engineering, Computer Engineering, Industrial Engineering, Food Technology, Computer Science, Mathematics, and Statistics. ComTech has been accredited by DIKTI under the decree number 3/E/KPT/2019 (SINTA 2) and indexed by CrossRef, ASEAN Citation Index, Directory of Open Access Journals (DOAJ), Science and Technology Index 2 (SINTA2), Garda Rujukan Digital (Garuda), Microsoft Academic Search, Google Scholar, Academic Resource Index (ResearchBib) and Indonesian Research Repository (Neliti). Research and Technology Transfer Office, Bina Nusantara University, Anggrek Campus, Jl.Kebon Jeruk Raya 27, Kebon Jeruk, Jakarta Barat 11530, Tel. +621-5350660 ext. 1705/1708, Fax.+621-5300244, E-mail: comtech@binus.edu, Website: https://journal.binus.ac.id/index.php/comtech, FB: https:// www.facebook.com/ComTechBinus Vol. 12 No. 1 June 2021 TABLE OF CONTENTS Redemtus Heru Tjahjana and Dhimas Mahardika Mathematical Modeling on the Control of Hunting Problems....................... ......................................... 1-8 Hasbullah and Mohamad Nasir Pricing of Medical Instrument Products for Domestic Production through Investment Feasibility Analysis............ 9-18 Putri Elsari Rahmayana, Humiras Hardi Purba, and Budi Susetyo Improving Ballastless Track Quality Using Project Quality Management and SmartPLS....................... ........... 19-32 Mahaning Indrawaty Wijaya, Suzanna, and Diana Utomo Enterprise Resource Planning Modification: A Literature Review....................... ..................................... 33-43 Edi Kurniadi, Ema Carnia, and Herlina Napitupulu The Existence of Affine Structures on the Borel Subalgebra of Dimension 6....................... ....................... 45-52 Sunadi, Humiras Hardi Purba, and Else Paulina Overall Equipment Effectiveness to Increase Productivity of Injection Molding Machine: A Case Study in Plastic Manufacturing Industry....................... .......................................................... 53-64 ComTechComTech Computer, Mathematics and Engineering Applications P-ISSN: 2087-1244 E-ISSN: 2476-907X