1. School of Computer Science and Engineering, Chongqing Three Gorges University,Wanzhou,Chongqing,China,404100
2. University of Ibadan,Department of Mathematics,Ibadan,Nigeria,200284
3. Chongqing Three Gorges University,Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology,Wanzhou,Chongqing,China,404100
4. Chongqing Three Gorges University,Key Laboratory of Intelligent Information Processing and Control,Wanzhou,Chongqing,China,404100