About author:FENG Shu-xia(1975-), female, native of Yuanyang, Henan, an associate professor of Henan University, Ph.D., engages in function theory of SCV; LI Hong-jun(1986-), male, native of Fugou, Henan, a graduate student of Henan University.
Supported by:
Supported by the National Natural Science Foundation of China(11001074,11061015,11101124)