Affiliation: | [1]College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China; [2]School of Traffic and TransportationEngineering, Changsha University of Science and Technology, Changsha 410114, P. R. China; [3]School of Information Technology, Jiangxi University of Finance and Economics, Nanchang 330013, E R. China; [4]Department of Economics and Management, Chuzhou University, Chuzhou 239000, P. R. China |