Guo, Hua http://orcid.org/0000-0002-3378-2323
Jing, Guangrui
Dong, Mian
Zhang, Lijian
Zhang, Xiaodan
Funding for this research was provided by:
Natural Science Foundation of Shaanxi Provincial Department of Education (17JK0319)
Shaanxi Provincial Science and Technology Department (2018JQ4016)
Doctoral Scientific Research Foundation of Xi’an Polytechnic University (107020277)
Text and Data Mining valid from 2019-11-21
Version of Record valid from 2019-11-21
Article History
Received: 22 March 2019
Accepted: 10 October 2019
First Online: 21 November 2019
Competing interests
: The authors declare that they have no competing interests.