个人简介

张永康，betway西汉姆联官网副教授. 主要研究方向:微分方程定性理论，神经网络及其应用.

学术论文

1. Yangkang Zhang, Liqun Zhou. Novel passivity analysis and global polynomial stabilization of complex-valued memristive neural networks with proportional delays for secure image encryption, Computational and Applied Mathematics, 2026, 45: 385.

2. Liqun Zhou, Yongkang Zhang, Xinsong Yang & Jiapeng Han. Global polynomial synchronization of neural networks with bidirectional proportional delays via adaptive pinning control and its application in image encryption, Neural Networks, 2025, 192: 107889.

3. Shiyou Sui, Yongkang Zhang & Baoyi Li. Limit cycles bifurcating from the quasi-homogeneous polynomial centers of weight-degree 2 under non-smooth perturbations, Qualitative Theory of Dynamical Systems, 2025, 24: 168.

4. Yangkang Zhang, Liqun Zhou. State estimation for proportional delayed complex-valued memristive neural networks, Information Sciences, 2024, 680: 121150.

5. Shiyou Sui, Yongkang Zhang & Baoyi Li. Proof of two conjectures for perturbed piecewise linear Hamiltonian systems, Nonlinear Analysis: Real World Applications, 2024, 81: 104195.

6. Shiyou Sui, Weijiao Xu & Yongkang Zhang. Limit cycles bifurcating from planar polynomial quasihomogeneous centers of weight-degree 3 with nonsmooth perturbations, International Journal of Bifurcation and Chaos, 2024, 34(11): 2450141.

7. 张永康, 李龙. 余元公式的一种直接证法. 大学数学, 2024, 40(04): 63-66.

8. Yangkang Zhang, Liqun Zhou. Stabilization and lag synchronization of proportional delayed impulsive complex-valued inertial neural networks, Neurocomputing, 2022, 507: 428-440.

9. Yangkang Zhang, Liqun Zhou. Novel global polynomial stability criteria of impulsive complex-valued neural networks with multi-proportional delays, Neural Computing and Applications, 2022, 34: 2913-2924.

教学成果

1. 2021年获评“全国老员工数学建模竞赛优秀指导教师”

2. 指导员工参加学科竞赛：

    获得全国老员工数学建模竞赛国家一等奖(2014)，国家二等奖(2016, 2017, 2019, 2020, 2021, 2023)

    获得美国老员工数学建模竞赛M奖(2023)，H奖(2019, 2021, 2022, 2023, 2025)

3. 指导员工参加学科实践：

    天津市老员工创新创业训练计划项目市级立项(2014, 2017, 2021, 2023, 2025)

    第七届中国国际“互联网+”老员工创新创业大赛天津赛区高教主赛道银奖

    第十七届“挑战杯”中国银行天津市老员工课外学术科技作品竞赛二等奖

教材编写

周立群，张永康，李龙，郝丽杰. 常微分方程. 北京：高等教育出版社，2026. 3