ISSN 2087-1244 (Printed) ISSN 2476-907X (Online) Vol. 9 No. 2 December 2018 ComTechComTech Computer, Mathematics and Engineering Applications Editor in Chief Ngarap Imanuel Manik Mathematics and Statistics Department, Bina Nusantara University, Indonesia Managing Editors Arta Moro Sundjaja Information System Department, Bina Nusantara University, Indonesia Noerlina Information System Department, Bina Nusantara University, Indonesia International Editor Board Agustinus Oey Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea Dase Hunaefi Free University of Bozen-Bolzano, Italy Kiyota Hashimoto PSU Phuket, Thailand Daniel M. Wonohadidjojo Ciputra University, Indonesia Eddy Wiyanto Krida Wacana Christian University, Indonesia Gisela Nina Sevani Krida Wacana Christian University, Indonesia Humiras Hardi Purba Mercu Buana University, Indonesia Leon Andretti Abdillah Bina Darma University, Indonesia Rino Nugroho Sebelas Maret University, Indonesia Tati Nurhayati Bogor Agricultural Institute, Indonesia Zulkardi Sriwijaya University, Indonesia Fergyanto E. Gunawan Bina Nusantara University, Indonesia Firza Utama Bina Nusantara University, Indonesia Ingrid Suryanti Surono Bina Nusantara University, Indonesia Irpan Hidayat Bina Nusantara University, Indonesia Lukas Siswanto Tanutama Bina Nusantara University, Indonesia Rinda Hedwig Bina Nusantara University, Indonesia Tota Pirdo Kasih Bina Nusantara University, Indonesia Tri Pudjadi Bina Nusantara University, Indonesia Wikaria Gazali Bina Nusantara University, Indonesia Language and Layout Editor Eka Yanti Pangputri Bina Nusantara University, Indonesia Dina Nurfitria Bina Nusantara University, Indonesia Atmawati Bina Nusantara University, Indonesia Holil Bina Nusantara University, Indonesia Secretariat Haryo Sutanto Bina Nusantara University, Indonesia Description COMTECH is a semiannual journal, published in June and December. COMTECH is a forum for lecturers, academics, researchers, practitioners, and students to convey and share knowledge in the form of empirical and theoretical research articles, case studies, and review of the literature. Editors invite professional education, research, entrepreneurs and students to participate in spreading the development of science in the fields of Information Systems, Architecture, Civil Engineering, Computer Engineering, Industrial Engineering, Food Technology, Computer Science, Mathematics, and Statistics through this scientific journal. Currently, ComTech has been indexed by CrossRef, ASEAN Citation Index, Directory of Open Access Journals (DOAJ), Science and Technology Index (SINTA), Microsoft Academic Search, Google Scholar, Academic Resource Index (ResearchBib) and Indonesian Research Repository (Neliti). The journal can be accessed online on http://journal.binus.ac.id/index.php/comtech. Authors should refer to the guidelines when preparing their articles. 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: asundjaja@binus.edu, hsutanto@binus.edu, comtech@binus.edu, Url: http://journal.binus. ac.id/index.php/comtech, FB: https://www.facebook.com/ComTechBinus ISSN 2087-1244 (Printed) ISSN 2476-907X (Online) Vol. 9 No. 2 December 2018 TABLE OF CONTENTS Shelvy Kurniawan and Steven Sanjaya Raphaeli Optimizing Production Process through Production Planning and Inventory Management in Motorcycle Chains Manufacturer ............................................................................................................... 43-50 Ong Alexander Ang and Arta Moro Sundjaja The Development of E-Procurement System for an IT Consultant Company .............................................. 51-58 Veronica E-Commerce Feasibility Analysis and Strategic Planning to Develop a Small-Medium Enterprise Project in Banking Company ................................................................................................................ 59-64 Ikwuoche John David, Osebekwin Ebenezer Asiribo, and Hussaini Garba Dikko Nonlinear Split-Plot Design Model in Parameters Estimation using Estimated Generalized Least Square -Maximum Likelihood Estimation................................................................................. 65-71 Mychael Maoeretz Engel Android Based Thesis Mentoring System Using Google Firebase ............................................................. 73-79 Index .................................................................................................................................. 81-84 ComTechComTech Computer, Mathematics and Engineering Applications