1. School of Physics and Electronic Information Engineering, Henan Polytechnic University, Jiaozuo, China
2. School of Engineering, University of Mount Union, Alliance, OH, USA
3. Institute of Mining Engineering, Guizhou Institute of Technology, Guiyang, China
4. School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, U.K
5. School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo, China