Funding for this research was provided by:
National Natural Science Foundation of China (41602295, 41602298, U1704243)
High-level Talents Foundation of the North China University of Water Resources and Electric Power (201501001)
Henan Institution of Higher Education Key Scientific Research Project (16A410004)
Article History
Received: 25 April 2018
Accepted: 29 October 2018
First Online: 1 November 2018