Funding for this research was provided by:
Natural Science Foundation of China (11571301, 11871065)
Natural Science Foundation of Jiangsu Province (BK20181450)
Distinguished Professor Program of Jiangsu Province
Yangzhou Talent Program LvYangJingFeng
Humanities and Social Science project of the Chinese Ministry of Education
Qing Lan Project of Jiangsu Province
Article History
Received: 4 March 2020
Revised: 6 July 2020
Accepted: 8 July 2020
First Online: 15 July 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Procedures for the estimation of parameters have been stated in the body of the paper or referred to in the reference section. The graphs were produced using MATLAB version 2018a, available from ExternalRef removed.