Vol. 11 No. 2 December 2020 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. 11 No. 2 December 2020 TABLE OF CONTENTS Cokorda Pramartha and Ni Putu Sri Harta Mimba Udayana University International Student Management: A Business Process Reengineering Approach................. 57-64 Henny Pramoedyo, Arif Ashari, and Alfi Fadliana Forecasting and Mapping Coffee Borer Beetle Attacks Using GSTAR-SUR Kriging and GSTARX-SUR Kriging Models... 65-73 Masithoh Yessi Rochayani, Umu Sa’adah, and Ani Budi Astuti Finding Biomarkers from a High-Dimensional Imbalanced Dataset Using the Hybrid Method of Random Undersampling and Lasso....................... ................................................................................... 75-81 Desri Kristina Silalahi, Husneni Mukhtar, Sheizi Prista Sari, Eka Afrima Sari, and Dandi Trianta Barus The Effect Analysis of Braden Scale on Pressure Ulcer in Community-Dwelling Older Adults....................... .... 83-88 Juan Andrew Suthendra and Magdalena Ariance Ineke Pakereng Implementation of Microservices Architecture on E-Commerce Web Service.............................................. 89-95 Didit Budi Nugroho, Bintoro Ady Pamungkas, and Hanna Arini Parhusip Volatility Fitting Performance of QGARCH (1,1) Model with Student-t, GED, and SGED Distributions................. 97-104 Index................................................................................................................................... 105-108 ComTechComTech Computer, Mathematics and Engineering Applications P-ISSN: 2087-1244 E-ISSN: 2476-907X