SHAO Ju-ping
1. School of Business , Ludong University , Yantai 264025 , China ;2. School of Management , Shandong University , Jinan 250100 , China;XU Xiang-yi
2. School of Management , Shandong University , Jinan 250100 , China;MENG Xiang-hua
1. School of Business , Ludong University , Yantai 264025 , China ;DONG Shao-hua
3. Department of Logistics Engineering , University of Science and Technology , Beijing 100083 China ;YANG Rui-cheng
School of Mathematics and Information , Ludong University , Yantai 264025 , China