Vol. 12 No. 2 December 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 Nurlina 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 Irwanda Laory University of Warwick, UK 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 Nico Surantha 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. 2 December 2021 TABLE OF CONTENTS Yohannes Dhimas Mahardika Dynamical Modeling of COVID-19 and Use of Optimal Control to Reduce the Infected Population and Minimize the Cost of Vaccination and Treatment....................... .................................................. 65-73 Dino Caesaron, Jessie Makapedua, and Rio Prasetyo Lukodono Evaluation of Online-Based Ride-Hailing Services Using Service Quality (Servqual) Method, Refined Kano Model, Importance Performance Analysis (IPA), and Quality Function Deployment (QFD): A Case Study of Grab Bike Indonesia............ ................................................................................. 75-88 Natalia Limantara, Renaldi, and Cynthia Filicia Redesign of E-Commerce Mobile Application with Design Thinking Method: A Case Study of RP2, Online Household Retailer....................... ........................................................ 89-98 Adi Permana, Humiras Hardi Purba, and Sawarni Hasibuan Design of Experiment (DOE) Analysis with Response Surface Method (RSM) to Optimize the Electroplating Parameter....................... ............................................................... 99-109 Khusnia Nurul Khikmah and A’yunin Sofro Clustering Regency and City in East Java Based on Population Density and Cumulative Confirmed COVID-19 Cases....................... ............................................................. 111-121 Hengki Tamando Sihotang Determination of the Shortest Path Using the Ant Colony Optimization (ACO) Algorithm Approach................... 123-133 Index................... ............................................................................................................... 135-138 ComTechComTech Computer, Mathematics and Engineering Applications P-ISSN: 2087-1244 E-ISSN: 2476-907X