Journal of the Philippine Institute of Industrial Engineers Editors Anthony SF Chiu, De La Salle University Tapan Bagchi, Indian Institute of Technology, Editor-in-Chief Kanpur, India Jose Mutuc, De La Salle University Rajendran Chandrasekharan, Indian Institute of Managing Editor Technology, Chennai, India Mitsuo Gen, Waseda University, Japan Kazuyoshi Ishii, Kanazawa Institute of Technology, Japan Editorial Board Hirokazu Kono, Keio University, Japan Hark Hwang, Korea Advanced Institute of Venusmar Quevedo, Adamson University, Science & Technology, Korea Manila Mooyoung Jung, Pohang University of Science Miriam Necesito, Mapua Institute of & Technology, Korea Technology, Manila Jin-Woo Park, Seoul National University, Korea Virginia Jose Soriano, University of the Aura C. Matias, University of the Philippines, Philippines Diliman Philippines Rene Domingo, Asian Institute of Management, Anna Bella Siriban-Manalang, De La Salle Manila University, Philippines Alfonso Aliga, SGV, Manila Federico Gonzalez, PIIE Founding President Nestor Japis, Rizal Technological University, Rumel Atienza, editor-in-chief of Journal of Manila AMIEP, Philippines Ruby Henson, Holy Angel University, Angeles Jackie Ming-Lang, Tseng, Ming Dao University, Phyllis Sia, San Carlos University, Cebu Taiwan Normybelle Saldua-Cruz, Kryzl Condominium David M.C. Wu, National Chiao Tung Cagayan de Oro University, Taiwan Vimilou Divinagracia, Lapanday, Davao Bernard Jiang, Yuan Ze University, Taiwan Renee Porras Parcon, Lapanday, Davao Kuo-Ming Wang, National Tsing Hua Anthony Halog, AIST, Japan University, Taiwan Zita Diez, Union Cement, Cagayan de Oro Nagen Nagarur, Asian Institute of Technology, Thailand International Advisory Board Suebsak Nanthavanij, Thammasat University, Thailand E. Shayan, Swinburne University of Technology, Yiming Wei, Chinese Academy of Sciences, Australia China Krishnamurthy Ramanathan, University of Takashi Oyabu, Kanazawa Seiryo University, Western Sydney, Australia Japan Erhan Kozan, Queensland University of Yasuhiro Hirakawa, Tokyo University of Technology, Australia Science, Japan Yong Geng, Dalian University of Technology, Toyokazu Nose, Osaka Institute of Technology, China Japan Weixuan Xu, Chinese Academy of Sciences, Kwang-Jae Kim, Pohang University of Science China and Technology,Korea Jifa Gu, Institute of Systems Science, Chinese Chi-Hyuck Jun, Pohang University of Science Academy of Sciences, China and Technology, Korea Kin Keung Lai, City University of Hong Kong, Mao-Jiun J. Wang, National Tsing Hua University, Taiwan Hong Kong Edwin T. C. Cheng, Hong Kong Polytechnic Yon-Chun Chou, National Taiwan University, University, Hong Kong Taiwan K L. Mak, Hong Kong University, Hong Kong HeungSuk Hwang, Dongeui University, Korea Arun P Sinha, Indian Institute of Technology, Tae-Eog Lee, Korea Advanced Institute of Kanpur, India Science and Technology, Korea .