1. School of Economics, Ocean University of China, Qingdao 266100, China
2. Business School, Qingdao University of Technology, Qingdao 266520, China
3. Business School, Nanjing Normal University, Nanjing 210023, China
4. Fujian Provincial Key Laboratory of Coast and Island Management Technology, Fujian Institute of Oceanology, Xiamen 361013, China