Funding for this research was provided by:
Natural Sciences Foundation of China (71703051, 71333006, 41501213)
Fundamental Research Funds for the Central Universities (2662017QD009)
Key Program of Philosophy and Social Sciences Research, Ministry of Education of China (15JZD014)
Soft Science Research Project of Technology Innovation in Hubei Province (2018ADC036)
Article History
Received: 21 November 2017
Accepted: 26 April 2018
First Online: 8 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.