Funding for this research was provided by:
National Natural Science Foundation of China (41571417, U1604145, 61802111, 61872125)
Science and Technology Department of Henan Province (182102210027, 182102410051)
Postdoctoral Research Foundation of China (2018T110723, 2016M602235)
Key Scientific Research Projects for Colleges and Universities of Henan Province (19A413001)
CERNET NGI Technology Innovation Project (NGII20170902)
the Research Foundation of Henan University (xxjc20140006)
Article History
Received: 17 October 2018
Revised: 23 June 2019
Accepted: 13 September 2019
First Online: 20 December 2019