1. School of Business Administration, Northeastern University, Shenyang 110819, People's Republic of China
2. School of Economics, Northeastern University at Qinhuangdao, Hebei 066004, People's Republic of China
3. School of Computer and Communication Engineering, Northeastern University at Qinhuangdao, Hebei 066004, People's Republic of China
4. School of Economics and Management, University of Chinese Academy of Sciences, Beijing 100190, People's Republic of China