Affiliation: | 1. School of Computer Science and Information Engineering, Contemporary Business and Trade Research Center, Zhejiang Gongshang University, Hangzhou, P.R. China;2. Department of Logistics and Maritime Studies, The Hong Kong Polytechnic University, Kowloon, Hong Kong;3. School of Information Science and Engineering, Shenyang University of Technology, Shenyang, P.R. China |