Chen, XueGang
Duan, Sheng
Wang, Lu-da
Funding for this research was provided by:
youth fund project of the humanities and social sciences of Education Ministry (15YJC870004)
Social Sciences fund project of Hunan Province (13YBA302)
education Science in Hunan province in 12th Five-Year planning project (XJK014CGD081, XJK011BXJ004)
Article History
Received: 13 November 2017
Revised: 8 January 2018
Accepted: 9 January 2018
First Online: 19 January 2018