Theory, Method and Control of Singular Systems (Z200622002) Two kinds of problems on periodic solutions of Chen Boshan's delay differential equations, a major project of Hubei Provincial Department of Education; Theoretical research and application of Li Biwen's mathematical model of infectious diseases (2004Z00 1) Li Biwen's generalized system theory (2007ABA 124) Study on the periodic solution of Li Biwen's medical ecological mathematical model (010601kloc) Stability and Application of Fu's Epidemic Model (B20052200 1) Local Embedding and Rough Geometry in Fu's Banach Space, a major project of Hubei Provincial Department of Education (1077175) Fixed Point Theorem in Banach Space (D2005220/KLOC-) Application of Hu's Nonlinear Analysis in Nonlinear Singular Differential Equations (D2005, Outstanding Young and Middle-aged Innovation Team Project of Hubei Provincial Department of Education, Parameter Estimation Method of Graph Model with Missing Data (2003A004), Research on Convergence of Parameter Estimation of Li Kaican's Graph Model (1/3), Stability Theory and Application of Stochastic Differential System with Markov Modulation, a key project of Hubei Provincial Department of Education (1/ 4); A systematic study on the semiparametric estimation theory of Xu Kan (1/4), a key project of Hubei Provincial Department of Education, and its application in modern surveying and mapping; Estimation theory and application of Hu Hongchang (2/6) semiparametric regression model supported by National Natural Science Foundation: Hu Hongchang, Youth Project of Hubei Provincial Education Department (1/4). Theoretical research and application of statistical model Hu Hongchang (1/8), an outstanding young and middle-aged innovation team project of Hubei Normal University, statistical theory and application of nonlinear model, a key project of the Ministry of Education (209078) Hu Hongchang (1/5), theoretical research and application of random censored statistical model, Hu Hongchang (1/5), a key project of Hubei Provincial Education Department.