Funding for this research was provided by:
National Nature Science Foundation of China (61571236)
Macau Science and Technology Fund (FDCT 093/2014/A2,041/2017/A1)
Research Committee of University of Macau (MYRG2015-00011-FST, MYRG2015-00012-FST)
Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX17_0795)
Natural Science Foundation of Jiangsu Province (BK20130873, BK20160910)
Scientific Research Funds of Nanjing University of Posts and Telecommunications (NY214072, NY215151)
Article History
Received: 11 June 2018
Revised: 25 July 2018
Accepted: 10 August 2018
First Online: 17 August 2018