(b) Soccer Ranking (Tsinghua: Cai Dayong) 1994 (a) Opening the way on a mountain (xidian university: He) (b) Locking and packing (Fudan University: Tan Yongji, East China University of Science and Technology: Yu Wen) 1995 (a) Flight Management (Fudan University: Tan Yongji) East China University of Science and Technology: Yu Wen Zi) (b) Operation Scheduling of Crane and Melting Furnace (Zhejiang University: Liu Xiangguan, Li Jiluan) 1996 (a) Optimal Fishing Strategy (a) Parameter design of parts (Tsinghua University: Jiang Qiyuan) (b) Cutting problem (Fudan University: Tan Huadong University of Science and Technology: in Wen Zi) 1998 (a) Income and risk of investment (Zhejiang University:) (b) Disaster patrol route (Shanghai Maritime University: drilling layout (b) Coal gangue accumulation (Taiyuan University of Technology: Jia Xiaofeng). Cavity detection (northeast china institute of electric power: Guanxin) 200 1 (a) three-dimensional reconstruction of blood vessels (Zhejiang University: Wang Guozhao) (b) bus dispatching (Tsinghua University: Tan Zeguang) (c) fund use plan (Southeast University: Chen Enshui) (d) bus dispatching (Tsinghua University: Tan Zeguang) 2002. Optimal design of vehicle light source (Fudan University: Tan Yongji, East China University of Science and Technology: Yu Wen) (b) Mathematical problems in lottery (PLA Information Engineering University: Han Chonggeng) (c) Optimal design of vehicle light source (Fudan University: Tan Yongji, East China University of Science and Technology: in Wen Zi) (d) Schedule (Tsinghua University: Jiang Qiyuan) 2003 (a). The spread of SARS (Organizing Committee) (d Design of temporary supermarket outlets for the Olympic Games (Beijing University of Technology: Meng) (b) Management of transmission congestion in power market (Zhejiang University:) (c) Drunk driving (Tsinghua: Jiang Qiyuan) (d) Recruitment of civil servants (PLA University of Information Engineering: Han Zhonggeng) 2005 (a). Assessment and Prediction of Yangtze River Water Quality (PLA Information Engineering University: Han Zhonggeng) (B) DVD online rental (Tsinghua University: Xie Jinxing, etc. (c) Evaluation of rainfall forecasting methods (Fudan University: Tan Yongji) (D) DVD online rental (Tsinghua University: Xie Jinxing, etc. (2006 press resource allocation (Beijing University of Technology: Meng) (b) AIDS treatment evaluation and curative effect prediction (Tianjin University: Bian Fuping) (c) optimal design of cans (Beijing Institute of Technology: Ye) (d) monitoring and control of gas and coal dust in coal mines (PLA Information Engineering University: Han Zhonggeng) (2007 China population growth prediction (b) by bus and bus. Preferential geometry of mobile phone "package" (2008 physical fitness test schedule (a) digital camera positioning (b) discussion of higher education tuition standard (c) ground search (d) analysis and evaluation (2009 NBA schedule (a) control method analysis of brake test bed (b) reasonable arrangement of ophthalmic beds (c) satellites and spacecraft.