作者机构:[1]Department of Applied Mathematics, Zhengzhou Information Engineering University, Zhengzhou 450002, China
相关基金:Supported by the National Natural Science Foundation of China (No.60673081); the National Grand Foundation Research 863 Program of China (No.2006 AA01Z417).
Communication author: Sun Huihui, born in 1983, female, graduate student. Department of Applied Mathematics, Zhengzhou Information Engineering University, P. O. Box 1001-745, Zhengzhou 450002, China. Email: sunhuihui811@126.com.