1. Tourism College, Sichuan University, Chengdu, Sichuan 610064, China
2. The Engineering & Technical College of Chengdu University of Technology, Leshan, Sichuan 614000, China
3. Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, Zhejiang 315201, China
4. College of Art and Design, Changchun University of Technology, Changchun, Jilin 130000, China
5. College of Management, Shih Chien University, Taibei 10462, Taiwan