1. School of Industrial Engineering and Engineering Management, Mapúa University, Manila, Philippines, Intramuros, Manila, Philippines
2. School of Graduate Studies, Mapua University, Intramuros, Manila, Philippines
3. Department of Engineering and Technical Services, Pearl Energy Philippines Operating Inc. Barangay Cagsiay 1, Mauban, Quezon Province, Philippines
4. International Bachelor Program in Engineering, Yuan Ze University, Chung-Li, Taiwan
5. Department of Industrial Engineering and Management, Yuan Ze University, Chung-Li, Taiwan
6. Department of Information Systems, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya, Indonesia