作者机构:[1]School of Computer Science, Northwestern Polytechnical University, Xi' an 710072, China
相关基金:Supported by the National Natural Science Foundation of China (60472072), the Specialized Research Foundation for the Doctoral Program of Higher Education (20040699034), the Aeronautical Science Foundation of China (04150370) and the Natural Science Foundation of Shaan'xi Province (2004K05-G23).
Communication author: Hu Fayuan, born in 1978, male, Ph,D. student. The School of Computer Science, Northwestern Polytechnical University, Xi'an 710072, China. Email: fuyuan_hu@sina.com.