School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, China.|School of Mathematics, Liaoning University, Shenyang, China.|School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, China.|School of Mathematics, Liaoning University, Shenyang, China.|Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Science, Ürümqi, China.|Research Center for Computer Simulating and Information Processing of Bio-Macromolecules of Liaoning Province, Shenyang, China.