姓名
徐衍聪
Yancong Xu
性别
男
Male


联系方式
杭州师范大学理学院
Yancongx@163.com
职称
教授
Professor

研究领域
1.动力系统，ODE & PDE
2.局部斑图动力学研究
3.同宿异宿现象
4.矩阵微分方程

Research Interests
1. Dynamical Systems, ODE & PDE
2. Dynamics of Patterns, Nonlinear Waves
3. Homoclinic and Heteroclinic Phenomena
4. Matrix Differential Equations

个人简历
2019年7月-2019年9月，加拿大约克大学LIAM，访问教授，吴建宏教授
2017年2月-2017年5月，加拿大西安大略大学，访问教授，郁培教授
2016年12月-至今，杭州师范大学数学系，教授，硕士生导师
2016年3月-2016年4月，上海师范大学数学系，副教授，韩茂安教授
2010年9月-2016年12月，杭州师范大学数学系，副教授，硕士生导师
2015年7月-2015年9月，德国不莱梅大学数学学院，Visiting Scientist，
Jens Rademacher教授
2013年7月-2013年9月，美国布朗大学，应用数学中心, 访问****， Visiting Scientist, Bjorn Sandstede 教授
2013年1月-2013年4月，日本京都大学数学科，GCOE资助，访问副教授，Hiroshi Kokubu教授
2011年1月-2012年1月，美国布朗大学，应用数学中心, 国家留学基金资助, Visiting Scholar，Bjorn Sandstede教授
2009年6月-2011年3月，浙江大学，数学博士后流动站，博士后, 汪国昭教授
2008年7月-2010年8月，杭州师范大学数学系，讲师，硕士生导师
2005年8月-2008年月7月，华东师范大学，数学系，博士，朱德明教授


Employments:

1. Center for Disease Modeling, York University, Canada. From July 2019 to Sept. 2019, Professor Jianhong Wu

2. Department of Mathematics, Western University, Canada. From February 2017 to May 2017, Professor Yu Pei

3. Department of Mathematics, Hangzhou Normal University, Hangzhou. From December 2016 to the present. Professor
Master Mentor

4. Department of Mathematics, Shanghai Normal University. From March 2016 to April 2016, Professor Han Maoan

5. Department of Mathematics, Hangzhou Normal University, Hangzhou. From July 2010 to December 2016. Associate Professor
Master Mentor

6. Department of Mathematics, Hangzhou Normal University, Hangzhou. From July, 2010 to December 2016. Associate Professor
Master Mentor

7. Department of Mathematics, Hangzhou Normal University, Hangzhou. From July 1^st, 2008 to Aug. 30th, 2010. Lecturer.
Master Mentor(From 2009)
8. Department of mathematics, University of Bremen, Germany. From July 2015 to Sept. 2015,Visiting Scientist, Professor Jens Rademacher

9. Division of Applied Mathematics, Brown University, Providence, USA. From July 2013 to Sept. 2013.,Visiting Scientist.
Professor Bjorn Sandstede

9. Department of Mathematics, Kyoto University, Japan. From Jan. 2013 to Apr. 2013. Visiting Associated Professor.
Professor Hiroshi Kokubu,

10．Division of Applied Mathematics, Brown University, Providence, USA. From Jan. 2011 to Jan. 2012. Visiting Scholar.
Professor Bjorn Sandstede

11. Department of Mathematics, Zhejiang University, Hangzhou, China. From June 12th, 2009 to March 15th, 2011. Postdoc.
Professor Wang Guozhao.

12. Department of Mathematics, East China Normal University, Shanghai. From Aug. 2005 to Aug. 2008. PH.D,
Professor Zhu Deming


教学情况
1.执教双语ODE课程
2.执教常微分方程，数学分析，动力系统分支理论等课程
3.执教AUTO & Matlab
Teaching:
1. Teach Bilingual ODE: <An introduction to ODE>.
2. Bifurcations in Dynamical Systems, ODEs and Mathematics Analysis, etc.
3. Softwares: AUTO 07P & Matlab

科研情况
科研情况：
　　目前主要从事动力系统分支理论及应用研究，主要包括：同宿异宿分支研究、局部斑图研究及数值模拟等研究工作，主要研究各种不同退化情形下的同宿异宿分支问题及特殊动力系统，包括反转动力系统，Hamiltonian系统及一般动力系统的各类分支问题，局部斑图分支问题等。美国工业与应用数学学会（SIAM）会员，近年来在国内外重要期刊上发表论文40余篇，曾主持和参与各类国家或省基金，国家留学基金，归国留学学基金，杭州师范大学培育项目、双语教改项目20余项科研项目。目前主持2016年国家自然科学基金面上项目（2017.1-2020.12）,主持浙江省自然科学基金面上项目一项（2020.1-2022,12），主持2020省级一流本科课程项目一项，参与国家自然科学基金“几类微分系统定性理论中若干问题的研究”（**）一项，主持浙江省自然科学基金面上项目两项，曾获教育部公派留学基金资助（2011.1-2012.1），先后两次访问布朗大学（美国常青藤盟校之一）应用数学中心Bjorn Sandstede教授（2011.1-2012.1, 2013.7-2013.9），获日本GCOE项目资助， 访问日本京都大学（2013.1-2013.4） Hiroshi Kokubu教授.德国不莱梅大学Jens Rademacher教授，加拿大西安大略大学和约克大学郁培教授和吴建宏教授。学术兼职：美国（SIAM）工业与应用数学会，Mathematical Reviews评论员，国家自然科学基金面上项目评审专家、地区项目评审专家、天元项目评审专家、浙江省自然科学基金评审专家、教育部学位论文评审专家、澳大利亚博士论文通讯评审专家，曾为Discrete and Continuous Dynamical Systems，Nonlinear Dynamics，Math. Meth. Appl. Sci., Inter. J. Bifurcation and Chaos等国内外SCI杂志审稿。

主持及参与各类项目：
1. 主持2020年浙江省自然科学基金面上项目（2020.1-2022.12）；
2. 主持2020年省级一流本科课程项目一项（2020.1-2022.12）。
3. 主持2016年国家自然科学基金面上项目（2017. 1-2020.12）；
4. 主持2013年浙江省自然科学基金面上项目（2013.1-2015.12）；
5. 主持2013年教育部归国留学基金项目一项（2013.9-2014.9）；
6. 主持2010年浙江省自然科学基金面上项目（2010.1-2012.12）；
7. 主持2009年中国博士后科学基金项目一项（2009.8-2011.3）；
8. 主持杭州师范大学本科创一流双语教学项目（2013. 1-2015.12）；
9. 主持杭州师范大学中青年骨干教师支持计划项目(2013.1-2015.12)；
10. 参与国家自然科学基金项目（**，2009.1-2011.12）；
11. 参与国家自然科学基金项目（**，2016.1-2019.12）；
曾获荣誉：
杭州师范大学教学十佳、杭州市优秀教师、杭州师范大学十佳优秀班主任
部分论文( Selected Journal Publications)：[1] Xiao Hu, Huaiping Zhu, Yancong Xu*, Modeling the population dynamics of Empoasca with the leaves of a tea tree, 2020,(Submitted).
[2] Yancong Xu, Yu Yang,Fanwei Meng, Pei Yu, Local and global bifurcations in a model of HIV dynamics,Nonlinear Anal.RWA，54, 2020, 1-28.
[3] Yancong Xu，Zirui Zhu,Vectored immunoprohylaxis and cell-to-cell transmission in HIV dynamics, Inter. J. Bifurcation and Chaos,2020, (Accepted).
[4] Y.Yang, L.Zou, T.H. Zhang, Yancong Xu, Dynamical analysis of a diffusive SIRS model with general incidence rate, Discrete and Continuous Dynamical Systems-B, 2020, doi:10.3934/dcdsb. (Online)
[5] Xiaoyu Jiang,Yu Yang,Fanwei Meng, Yancong Xu,Global dynamics of avian influenza with nonlinear recovery rate and psychological effect,Journal of Applied Analysis and Computation,2020, online.
[6] Jiang Xiaoyu, Zhu Zirui, Meng Fanwei, Xu Yancong*，Analysis of SIRS epidemic models with treatment function and immunity loss rate，Applied Mathematics, 2019.(Accepted)
[7] Yancong Xu, Xiaohe Chen, Modulational instability of two-dimensional dissipative generalization of Schrodinger equation with cubic-quintic term, Applied Mathematics, 2018, 31(2): 257-268.
[8]Yancong Xu, Tianzhu Lan, Zhenxue Wei, Localized patterns of the Swift-Hohenberg equation with two symmetry-breaking terms, Ann. of Appl. Math. 34: 1(2018), 94-110.
[9]Yancong Xu, Xingbo Liu, Analysis of a Shil'nikov type homoclinic bifurcation. Acta Mathematica Sinica, English ver. Acta Mathematica Sinica, English Series, 2018, 34(5), 901-910.
[10]Yancong Xu, Rui Xu, Yu Yang, Bifurcation from two equilibria of steady
state solutions for non-reversible amplitude equations, Journal of Applied Analysis and Computation, 7(4), 2017, 1448–1462.
[11]Yu Yang, Tonghua Zhang, Yancong Xu, Jinling Zhou, A delayed virus infection model with cell-to-cell transmission and CTL immune response, International Journal of Bifurcation and Chaos, Vol. 27, No. 10 (2017) **.
[12] Yancong Xu, Yongli Liu, Localized patterns of the Swift Hohenberg equation with a dissipative term. Annals of Applied Mathematics, Ann. of Appl. Math., 33:1(2017),6-17.
[13] Yancong Xu, Tianzhu Lan, Yongli Liu, New plane wave solutions and their stability of nonlinear Schr$\ddot{o}$dinger equation with weak dissipation. Annals of Applied Mathematics, 2016, 2(32), 183-200.
[14] Yu Yang, Yancong Xu, Global stability of a diffusive and delayed virus dynamics model with Beddington-DeAngelis incidence function and CTL immune response, Computers & Mathematics with Applications, 2016, 71(4): 922-930.
[15] Xingbo Liu, Yancong Xu, Sisi Wang, Heterodimensional cycle bifurcation with two orbit flips, Nonlinear Dynamics, 2015,79(4), 2787–2804.
[16] Yancong Xu*, Fengjie Geng, Existence of the Shift-invariant Curve Sequences on Center Manifolds near Homoclinic Bellows Configuration. Applied Mathematics B, Journal of Chinese Universities，2014, 29(1): 108-118.
[17] Yancong Xu*, Minling Zhong, A necessary and sufficient condition for the existence of large solutions for -Laplacian Schr?dinger systems with a convection term, Applied Mathematics Letter, 780-786 (2013).
[18] Bjorn Sandstede，Yancong Xu*, Snakes and isolas in non-reversible conservative systems. Dynamical Systems, 2012, 27(3), 217-329.
[19] Fengjie Geng, Yancong Xu*, Bifurcations of heteroclinic loop accompanied by pitchfork bifurcation. Nonlinear Dynamics (2012) 70:1645-1655.
[20] Yancong Xu, D. M. Zhu, X. B. Liu, Bifurcations of Multiple Homoclinics in General Dynamical Systems. Discrete and Continuous Dynamical Systems (A), 30(3)(2011), 945-963.
[21] Yancong Xu, D. M. Zhu, Bifurcation of heterodimensional cycles with one orbit flip and one inclination flip. Nonlinear Dynamics, 60(2010),1-13.
[22] X. G. Zhang, Yancong Xu, Multiple positive solutions of singularly perturbed differential systems with different orders. Nonlinear Analysis, Theory, Methods & Applications, 72(5)(2010), 2645-2657.
[23] Yancong Xu, D. M. Zhu, F. J. Geng, Codimension 3 Heteroclinic Bifurcations with Orbit and Inclination Flips in Reversible Systems. Inter. J. of Bifur. and Chaos. 18(12) (2008), 3689-3701.
[24] Yancong Xu*, D. M. Zhu, Guifeng Deng, Codimension 2 Reversible Heteroclinic Bifurcations with Inclination Flips. Science in China，Series, A：Mathematics， 52 (8)(2009),1801-1814.
[25] F. J. Geng, D. M. Zhu, Yancong Xu, Bifurcations of Heterodimensional Cycles with Two Saddle Points. Chaos, Solitons and Fractals, 39(5)(2009), 2063- 2075.
[26] Yancong Xu, New Kamenev Type Theorems for Super-linear Matrix Differential Equations. Applied Mathematics and Computation, 209(2)(2009), 410-414.
[27] F. J. Geng, Yancong Xu, D. M. Zhu, Periodic Boundary Value Problems for First-order Impulsive Dynamic Equations on Time Scales. Nonlinear Analysis, Theory, Methods & Applications. 11(69) (2008), 4074-4087.
[28] 徐衍聪，朱德明，邓桂峰，带有倾斜翻转的余维2反转异宿分支，中国科学，A辑，39(7) (2009), 827-839.

Activities&Links
Links：
1. Department of Mathematics, Zhejiang University,China.
2. Division of Applied Mathematics, Brown Univesity, USA.
3. Department of Mathematics, Brown University, USA
4. Deapartment of Mathematics, East China Normal University, China.
5. Department of Mathematics, Imperial Colleage, London, UK
6. ICERM，Brown University，USA
People:
Bjorn Sandstede;
Martina Chirilus-Bruckner;
Alan R. Champneys;
Yiping Ma;
J. Lamb；
David Lloyd;
J. Knobloch