Wang, Xu
Funding for this research was provided by:
sichuan Provincial Department of Education Project (CC15G15)
Zhanjiang General Project of Philosophy and Social Sciences (ZJ17YB08)
Zhanjiang Science and Technology Project (2015B01053)
Article History
Received: 18 December 2017
Revised: 25 February 2018
Accepted: 1 March 2018
First Online: 6 March 2018