Institution: | 1.Department of Operations Research and Information Engineering, Beijing University of Technology, Beijing, 100124, People’s Republic of China ;2.Faculty of Business Administration, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada ;3.School of Mathematics and Statistics Science, Ludong University, 186 Hongqi Middle Road, Zhifu District, Yantai, Shandong, 264025, People’s Republic of China ;4.College of Science, Tianjin University of Technology, NO. 391, Binshui West Street, Xiqing District, Tianjin, People’s Republic of China ; |