Funding for this research was provided by:
Shandong Provincial Natural Science Foundation, China (ZR2017MG011)
Received: 12 June 2018
Accepted: 30 August 2018
First Online: 10 September 2018
: Shujuan Cui received a M.S. degree from Qingdao University, in 2004. She is an assistant professor in Qingdao University. Her research interests lie in wireless sensor networks (e-mail: firstname.lastname@example.org).Gengxin Sun received a Ph.D. degree from Qingdao University, in 2013. He is an associate professor in Qingdao University, China. His research interests lie in complex network (e-mail: email@example.com).Sheng Bin received a Ph.D. degree from Shandong University of Science and Technology, in 2014. She is an associate professor in Qingdao University, China. Her research interests lie in complex network (e-mail: firstname.lastname@example.org).
: The authors declare that they have no competing interests.
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