1. School of Economics and Management, Huazhong Agricultural University, Wuhan 430070, China
2. Hubei Rural Development Research Center, Wuhan 430070, China
3. College of Business, Benedictine University, Lisle, Illinois 60532, USA
4. School of Economics and Trade, Guangdong University of Foreign Studies, Guangzhou 510420, China
5. Industrial Engineering Department, Technical University of Madrid, Madrid 28006, Spain