1. Graduate Institute of Mechanical and Precision EngineeringNational Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan
2. Department of B.A. and International EconomicsLac Hong University, Bien Hoa, Dong Nai, Vietnam
3. Department of Industrial Engineering and ManagementCheng Shiu University, Kaohsiung, Taiwan
4. National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan