Affiliation: | 1. College of Mathematical and System Science, Shandong University of Science and Technology, Shandong 266510, China;2. College of Information Science and Engineering, Shandong University of Science and Technology, Shandong 266510, China;3. School of Mathematical Science, Dalian University of Technology, Dalian, Liaoning 116024, China;4. Department of Biotechnology, Dalian University of Technology, Dalian, Liaoning 116012, China |