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徐衍聪

作者:沈冬杰   点击:1593  发布时间:2012-05-16 12:58:35

姓名

徐衍聪

Yancong Xu

性别

Male



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

20137-20139月,美国布朗大学,应用数学中心, 国家留学基金资助访问学者, 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, 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. Division of Applied Mathematics, Brown University, Providence, USA. From July 2013 to Sept. 2013.,Visiting Scientist.

Professor Bjorn Sandstede

 

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

Professor Hiroshi Kokubu,

 

5Division of Applied Mathematics, Brown University, Providence, USA. From Jan. 2011 to Jan. 2012. Visiting Scholar.  

Professor Bjorn Sandstede

 

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

Professor Wang Guozhao.

 

7. 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,主持归国留学基金项目一项(2013.9-2014.9),主持中国博士后科学基金项目一项(2009.8 - 2011.3),参与2009年、2011年浙江省自然科学基金项目四项。曾参与和完成国家自然科学基金项目(106711052007.1- 2008.12),已结题;参与国家自然科学基金项目(108010512009.1-2011.12)一项,已结题。入选杭州师范大学优秀中青年教师支持计划项目,杭州市优秀教师,杭州师范大学优秀班主任等。

部分论文( Selected Journal Publications)

[1]  Yancong Xu* , Tianzhu Lan, Localized Patterns of the Cubic quintic Swift-Hohenberg Equations with Two Symmetry-breaking Terms. Submitted.

[2]  Lantian Zhu, Yancong Xu*, Instability of equatorial water waves with an underlying current. Submitted.

[3]  Yancong Xu*, Tianzhu Lan, Yongli Liu, New plane wave solutions and their stability of nonlinear  Schr$\ddot{o}$dinger equation with weak dissipation. Submitted.

[4 ] Yancong Xu*, Yongli Liu,  Localized patterns of the Swift Hohenberg equation with a dissipative term. Submitted.

[5] Xingbo Liu, Yancong Xu, Sisi Wang, Heterodimensional cycle bifurcation with two orbit flips, Nonlinear Dynamics, 2014,1-18, DOI 10.1007/s11071-014-1846-7.

[6] Yancong Xu*, Fengjie Geng, Existence of the Shift-invariant Curve Sequences on Center Manifolds near Homoclinic Bellows Configuration. Applied Mathematics B, Journal of Chinese Universities2014, 29(1): 108-118.

[7] 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).

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

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

[10] 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.

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

[12] 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.  

[13] 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. 

[14] Yancong Xu*, D. M. Zhu, Guifeng Deng, Codimension 2 Reversible Heteroclinic Bifurcations with Inclination Flips. Science in ChinaSeries, AMathematics 52 (8)(2009),1801-1814.  

[15] 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. 

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

[17] 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. 

[18] 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 SeminarWednesday2:00PM-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.

5Department 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;

John Burke;

J. Lamb

David Lloyd;

J. Knobloch