XU Qian-jin(1966-), male, native of Zhengzhou, Henan, a lecturer of Henan Vocational and Technical College of Communications, engages in partial differential equation LI Xin(1981-), female, native of Xinyang, Henan, a lecturer of Xinyang Vocational and Technical College, engages in partial differential equation FENG Yue-hong(1980-), male, native of Xuchang, Henan, a doctor of Beijing University of Technology, engages in partial differential equation.