1. College of Engineering, Northeast Agricultural University, Harbin, People’s Republic of China
2. Postdoctoral Station for Agricultural and Forestry Economic Management, Northeast Agricultural University, Harbin, People’s Republic of China
3. School of Economics and Management, Harbin University of Science and Technology, Harbin, People’s Republic of China
4. College of Economics and Management, Northeast Agricultural University, Harbin, People’s Republic of China
5. Department of Applied Mathematics, Harbin University of Science and Technology, Harbin, People’s Republic of China