1. School of Energy and Power Engineering, Dalian University of Technology, Dalian, People's Republic of China
2. School of Mathematics and Statistics Science, Ludong University, Yantai, People's Republic of China
3. School of Mathematical Science, Dalian University of Technology, Dalian, People's Republic of China
4. School of Mathematics and Information Science, Shandong Institute of Business and Technology, Yantai, People's Republic of China
5. Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian, People's Republic of China