Proceedings of abstract and papers of the 14th Asia Pacific Industrial Engineering and Management Systems Conference 2013, the 17th Asia Pacific Regional Meeting of the International Foundation for Production Research, 13th Philippine Institute of Industrial Engineers National Congress and 6th IE Research Conference, and 2013 Sustainable Energy and Environment Forum - Chiu, Anthony Shun Fung; Matias, Aura C. (Asia Pacific Industrial Engineering and Management Society, 2013)