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徐衍聪

作者:沈冬杰   点击:2603  发布时间:2012-05-16 12:58:35

姓名

徐衍聪

Yancong Xu

性别

Male

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联系方式

杭州师范大学理学院

Yancongx@163.com

职称

副教授

Associate 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

20109-至今,杭州师范大学数学系,副教授,硕士生导师

20157-20159月,德国不莱梅大学数学学院,Visiting Scientist

    Jens Rademacher教授

20137-20139月,美国布朗大学,应用数学中心, 访问学者, Visiting Scientist, Bjorn Sandstede 教授

20131-20134月,日本京都大学数学科,GCOE资助,访问副教授,Hiroshi Kokubu教授

20111-20121月,美国布朗大学,应用数学中心, 国家留学基金资助, Visiting ScholarBjorn Sandstede教授

20096-20113月,浙江大学,数学博士后流动站,博士后, 汪国昭教授

20087-20108月,杭州师范大学数学系,讲师,硕士生导师

20058-2008年月7月,华东师范大学,数学系,博士,朱德明教授

Employments:

1.   Department of Mathematics, Hangzhou Normal University, Hangzhou. From July 1st, 2010 to the present. Associate Professor

Master Mentor

2. Department of Mathematics, Hangzhou Normal University, Hangzhou. From July 1st, 2008 to Aug. 30th, 2010. Lecturer.

Master Mentor(From 2009)

3.   Department of mathematics, University of Bremen, Germany. From July 2015 to Sept. 2015,Visiting Scientist, Professor Jens Rademacher

4. Division of Applied Mathematics, Brown University, Providence, USA. From July 2013 to Sept. 2013.,Visiting Scientist.

Professor Bjorn Sandstede

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

Professor Hiroshi Kokubu,

6Division of Applied Mathematics, Brown University, Providence, USA. From Jan. 2011 to Jan. 2012. Visiting Scholar.

Professor Bjorn Sandstede

7. Department of Mathematics, Zhejiang University, Hangzhou, China. From June 12th, 2009 to March 15th, 2011. Postdoc.

Professor Wang Guozhao.

8. Department of Mathematics, East China Normal University, Shanghai. From Aug. 30 2005 to Aug. 30th 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30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10余项科研项目。目前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”(11171085)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.

主持及参与各类项目:

1. 主持2016年国家自然科学基金面上项目(2017. 1-2020. 12);

2. 主持2013年浙江省自然科学基金面上项目(2013.1-2015.12);

3. 主持2013年教育部归国留学基金项目一项(2013.9-2014.9);

4. 主持2010年浙江省自然科学基金面上项目(2010.1-2012.12);

5. 主持2009年中国博士后科学基金项目一项(2009.8-2011.3);

6. 主持杭州师范大学本科创一流双语教学项目(2013. 1-2015. 12);

7. 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);

8. 参与国家自然科学基金项目(10801051,2009.1-2011.12);

9. 参与国家自然科学基金项目(11571088,2016.1-2019.12);

曾获荣誉:

2014年杭州市优秀教师;

2009年杭州师范大学优秀班主任;

2014年杭州师范大学十佳优秀班主任;

2014年杭州师范大学优秀班主任;

部分论文( Selected Journal Publications):

[1]Yancong Xu, Yiping Ma, Yu Yang, Local and global bifurcations in a model of HI dynamics, (In Preparation).

[2]Yancong Xu, Rui Xu, Yu Yang, Bifurcation from two equilibria of steady
state solutions for non-reversible amplitude equations,(Submitted).

[3]Yancong Xu, Tonghua Zhang, Xiaohe Chen, Modulational instability of two-dimensional dissipative generalization of Schrodinger equation with cubic-quintic term,(Submitted)

[4]Yu Yang, Yancong Xu, Tonghua Zhang, Jinling Zhou, A delayed virus infection model with cell-to-cell transmission and CTL immune response, (Submitted).

[5] Yancong Xu, Yongli Liu, Localized patterns of the Swift Hohenberg equation with a dissipative term. Annals of Applied Mathematics, 2016 (Accepted).

[6]Yancong Xu, Xingbo Liu, Analysis of a Shil'nikov type homoclinic bifurcation. Acta Mathematica Sinica, English ver. 2016(Accepted)

[7 ] 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.

[8] 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.

[9] Xingbo Liu, Yancong Xu, Sisi Wang, Heterodimensional cycle bifurcation with two orbit flips, Nonlinear Dynamics, 2015,79(4), 2787–2804.

[10] 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.

[11] Yancong Xu*, Minling Zhong, A necessary and sufficient condition for the existence of large solutions for image-Laplacian Schrödinger systems with a convection term, Applied Mathematics Letter, 780-786 (2013).

[12] Bjorn Sandstede,Yancong Xu*, Snakes and isolas in non-reversible conservative systems. Dynamical Systems, 2012, 27(3), 217-329.

[13] Fengjie Geng, Yancong Xu*, Bifurcations of heteroclinic loop accompanied by pitchfork bifurcation. Nonlinear Dynamics (2012) 70:1645-1655.

[14] 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.

[15] Yancong Xu, D. M. Zhu, Bifurcation of heterodimensional cycles with one orbit flip and one inclination flip. Nonlinear Dynamics, 60(2010),1-13.

[16] 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.  

[17] 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.

[18] 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.  

[19] 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.

[20] Yancong Xu, New Kamenev Type Theorems for Super-linear Matrix Differential Equations. Applied Mathematics and Computation, 209(2)(2009), 410-414.

[21] 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.

[22] 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

Office Hours:

Monday: 2:00PM-4:00PM

Friday:1:30PM-4:00PM

Seminar:

ODE & PDE Seminar: Wednesday:2:00PM-4:30PM

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;J. Nathan Kutz;

Martina Chirilus-Bruckner;

Alan R. Champneys;

Yiping Ma;

J. Lamb

David Lloyd;

J. Knobloch