1. a Department of Marketing and Distribution Management , National Kaohsiung First University of Science and Technology , Kaohsiung, Taiwan
2. b Department of Information Management , National Kaohsiung University of Applied Sciences , Kaohsiung, Taiwan E-mail:
3. c Department of Information Management , National Kaohsiung University of Applied Science , Kaohsiung, Taiwan E-mail:
4. d Department of Marketing and Distribution Management , National Kaohsiung First University of Science and Technology , Kaohsiung, Taiwan E-mail: