About author:ZHANG Qing-xiang(1954-), male, native of Ansai, Shaanxi, a professor of Yan’an University, engages in optimization theory, methods and application; ZHANG Yong-zhan(1985-), male, native of Dingbian, Shaanxi, a graduate of Yan’an University, engages in optimization theory, methods and applications.
Supported by:
Supported by the Science Foundation of Shaanxi Provincial Educational Department Natural Science Foundation of China(06JK152)； Supported by the Graduate Innovation Project of Yanan university(YCX201003)
