Funding for this research was provided by:
National Natural Science Foundation of China (51408463)
Special Research Project of the Education Department of the Shaanxi Provincial Government (15JK1413)
Scientific Plan of the Xi’an University of Architecture and Technology (RC1375)
Scientific Project of the Xi’an University of Architecture and Technology (QN1409)
Article History
Received: 26 May 2018
Accepted: 3 October 2018
First Online: 15 October 2018