Funding for this research was provided by:
the Social Science Planning Project of Chongqing (2015PY24)
the Chongqing Research Program of Basic Theory and Advanced Technology (cstc2016jcyjA0151)
the Scientific Research Foundation of Chongqing Technology and Business University (2015-56-06)
the Fifth Batch of Excellent Talent Support Program for Chongqing Colleges and University (2017-35-16)
Article History
Received: 20 October 2017
First Online: 9 February 2018