Gao, Haiyin; Zhu, Tianxiao; Xu, Chunling A new hybrid conjugate gradient method for unconstrained optimization. (Chinese. English summary) Zbl 1265.90272 J. Jilin Univ., Sci. 50, No. 3, 457-461 (2012). MSC: 90C30 65K05 PDFBibTeX XMLCite \textit{H. Gao} et al., J. Jilin Univ., Sci. 50, No. 3, 457--461 (2012; Zbl 1265.90272)
Wang, Xiaoyang; Zhu, Tianxiao; Gao, Haiyin; Gai, Yongjie Existence of positive periodic solutions for a class of predator-prey cubic Kolmogorov impulsive systems. (Chinese. English summary) Zbl 1177.92053 J. Jilin Univ., Sci. 46, No. 2, 229-233 (2008). MSC: 92D40 34A37 34C25 47N60 PDFBibTeX XMLCite \textit{X. Wang} et al., J. Jilin Univ., Sci. 46, No. 2, 229--233 (2008; Zbl 1177.92053)
Gao, Haiyin Existence of solution and optimal harvesting control for nonlinear age-dependent population diffusion system. (Chinese. English summary) Zbl 1150.49333 J. Jilin Univ., Sci. 45, No. 4, 544-554 (2007). MSC: 49N90 93C95 92D25 PDFBibTeX XMLCite \textit{H. Gao}, J. Jilin Univ., Sci. 45, No. 4, 544--554 (2007; Zbl 1150.49333)
Weng, Shiyou; Gao, Haiyin; Zhang, Xiaoying; Jiang, Daqing Existence principles for singular boundary value problems of one-dimension \(p\)-Laplacian. (Chinese. English summary) Zbl 1109.34309 J. Jilin Univ., Sci. 44, No. 3, 351-356 (2006). MSC: 34B16 47H11 PDFBibTeX XMLCite \textit{S. Weng} et al., J. Jilin Univ., Sci. 44, No. 3, 351--356 (2006; Zbl 1109.34309)
Gao, Haiyin; Zhang, Xiaoying; Weng, Shiyou; Wang, Ke Existence of positive periodic solution for predator-prey impulsive differential system with Holling III functional response. (Chinese. English summary) Zbl 1109.34319 J. Jilin Univ., Sci. 44, No. 2, 150-156 (2006). MSC: 34C60 34A37 34C25 PDFBibTeX XMLCite \textit{H. Gao} et al., J. Jilin Univ., Sci. 44, No. 2, 150--156 (2006; Zbl 1109.34319)
Gao, Haiyin; Li, Xiaoyue; Lin, Xiaoning; Jiang, Daqing Single and multiple positive solutions of periodic boundary value problems for second-order singular nonlinear differential equations. (Chinese. English summary) Zbl 1083.34509 J. Jilin Univ., Sci. 43, No. 4, 411-416 (2005). MSC: 34B16 34B18 34B15 PDFBibTeX XMLCite \textit{H. Gao} et al., J. Jilin Univ., Sci. 43, No. 4, 411--416 (2005; Zbl 1083.34509)