| Affiliation: | 1. School of Energy and Power Engineering, Dalian University of Technology, Dalian, Liaoning 116024, PR China;2. School of Mathematics and Statistics Science, Ludong University, Yantai, Shandong 264025, PR China;3. School of Mathematical Science, Dalian University of Technology, Dalian, Liaoning 116024, PR China;1. School of Mathematics and Statistics Science, Ludong University, Yantai, Shandong 264025, PR China;2. School of Transportation, Ludong University, Yantai, Shandong 264025, PR China;3. School of Mathematical Science, Dalian University of Technology, Dalian, Liaoning 116024, PR China |
