1. School of Information Technology and Management; University of International Business and Economics; No. 10, Huixin Dongjie, Chaoyang District Beijing 100029 China
2. College of Management; University of Massachusetts Boston; 100 Morrissey Blvd Boston MA 02125 USA
3. School of Business; Renmin University of China; 59 Zhongguancun Street Beijing 100872 China