Affiliation: | 1. School of Mathematical Sciences, Tianjin Polytechnic University, Tianjin 300130, PR China;2. School of Mathematical Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, PR China;3. Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, PR China;4. College of Mathematics and Statistics, Guangxi Normal University, Guilin 541006, PR China;1. Dynamic Systems and Simulation Laboratory, Technical University of Crete, Chania, 73100, Greece;2. Dept. of Mathematics, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece;3. Faculty of Maritime and Transportation, Ningbo University, Ningbo, China |