1. Department of Management Science and Engineering, School of Business, Qingdao University 1 , Qingdao 266000, Shandong, People's Republic of China
2. Qingdao Zhongkai Construction Engineering Co., LTD 2 ., Qingdao 266000, Shandong, People's Republic of China
3. Department of Management Science and Engineering, School of Information Management and Engineering, Shanghai University of Finance and Economics 3 , Shanghai 200433, People's Republic of China