1. a Industrial Engineering & Management Department , St John's University , Tamsui, Taipei 25135, Taiwan, ROC
2. b Industrial Engineering Department , Chung Yuan Christian University , Chungli 32023, Taiwan, ROC
3. c Marketing and Logistics Department , St John's University , Tamsui, Tapai 25135, Taiwan, ROC
4. d Aeronautical Engineering Department , Chung Cheng Institute of Technology, National Defense University , Taoyuan, Taiwan 335, ROC
5. e 15B Wingate Ave., Eastwood , Sydney 2122, NSW, Australia