Research
Changhui Tan

Changhui Tan

I am a postdoctoral research associate in CSCAMM and Department of Mathematics, University of Maryland. 

Monday, 23 September 2019 09:01

MacOS change keychain password

In the MacOS system, the keychain password has to match the user password in order to use keychain appropriately. In my case, they have to match in order to allow Apple Watch to unlock the Mac.

The official way to change the keychain password can be found HERE. However, in my case, the "Change password for keychain login" option is in gray and can not be selected. One solution is the following:

Open terminal and type in

security set-keychain-password

Then, type in old password and then new password. The password is then changed. This does not require admin access.

Saturday, 30 August 2008 23:26

Honors and Awards

2013-2014 Ann G. Wylie Dissertation Fellowship
  SIAM Student Travel Award
  AMS Graduate Student Travel Grant
  Kaplan Travel Grant
2011-2012 Mark E. Lachtman Graduate Student Award
  Jacob K. Goldhaber Travel Award
2010-2011 Kaplan Travel Grant
2008-2010 Graduate Fellowship in University of Maryland
2007-2008 First Honor Graduates in Beijing
  "Outstanding University Graduates" in Peking University
2006-2007 Triple-Good Student in Peking University
  Chinese Economical Research Scholarship
2005-2006 Triple-Good Student in Peking University
  Baogang Scholarship
2004-2005 Triple-Good Student in Peking University
  Guanghua Scholarship
Saturday, 30 August 2008 22:11

Conference, Workshops and Seminars

 

2019

2019.7.15-19 International Congress on Industrial and Applied Mathematics, Valencia, Spain.
  Talk: Eulerian dynamics with alignment interactions.
2019.7.8-10 2019 TIANFU International Conference on Partial Differential Equations, Southwestern University of Finance and Economics, Chengdu, China.
  Talk: Eulerian dynamics with alignment interactions.
2019.6.20 PDE Seminar, University of Electronic Science and Technology of China, Chengdu, China.
  Talk: Small scale singularity formations in Euler and related equations.
2019.6.12 PDE Seminar, Chongqing University, Chongqing, China.
  Talk: Small scale singularity formations in Euler and related equations.
2019.5.24 Colloquium, Renmin University, Beijing, China.
  Talk: Small scale singularity formations in Euler and related equations.
2019.5.23 Computational and Applied Math Seminar, Peking University, Beijing, China.
  Talk: Asymptotic preserving schemes on kinetic models with singular limits.
2019.5.22 Thematic Reports, Beijing Normal University, Beijing, China.
  Talk: Eulerian dynamics with nonlocal interactions.
2019.5.15 Analysis Seminar, Tsinghua University, Beijing, China.
  Talk: Self-organized dynamics: aggregation and flocking.
2019.5.9-12 Partial Differential Equations and Applications in Physics and Life Sciences, Chongqing, China.
  Talk: Eulerian dynamics with alignment interactions.
2019.3.17-20 DASIV Center Spring School Series: Models and Data.
  Talk: Asymptotic preserving schemes on kinetic models with singular limits.
2019.3.12 PDE Seminar, Georgia Institute of Technology.
  Talk: Eulerian dynamics with alignment interactions.
2019.3.5-6 Mathematical Aspects of Collective Dynamics: Kinetic Description and Fractional Diffusion, University of Maryland, College Park.
  Talk: On Euler Alignment system with weakly singular interactions.
2019.3.1 Graduate Seminar, Department of Civil Engineering, University of South Carolina.
  Talk: The mathematics in continuum mechanics.
2019.2.19 Graduate Colloquium, University of South Carolina.
  Talk: Fluid dynamics: from stirring a cup of coffee to tracking a hurricane.

2018

2018.10.22-26 Young Researchers Workshop: Kinetic Descriptions in Theory and Applications, University of Maryland, College Park.
  Talk: On the Euler-Alignment system.
2018.10.5-7 The 1st Annual Meeting of SIAM Texas-Louisiana Section, Louisiana State University.
  Talk: Global regularity for Burgers equation with density dependent fractional dissipation.
2018.9.29-30 AMS Sectional Meeting: Special Session on Recent Analytic and Numeric Results on Nonlinear Evolution Equations, University of Delaware.
  Talk: Global regularity for Burgers equation with density dependent fractional dissipation.
2018.6.18-22 Nonlocal Differential Equations in Collective Behavior, American Institute of Mathematics, San Jose.
2018.4.23 Computational and Applied Mathematics Seminar, Iowa State University.
  Talk: Self-organized dynamics: aggregation and flocking.
2018.4.21-22 Research Interaction Weekend: Critical Thresholds in Kinetic and Wave Equations, Iowa State University.
  Talk: Recent progress in critical thresholds phenomenon.
2018.3.1 Mathematics Colloquium, University of Akron.
  Talk: Self-organized dynamics: aggregation and flocking.
2018.2.26 Mathematics Colloquium, University of Central Florida.
  Talk: Self-organized dynamics: aggregation and flocking.
2018.2.19-22 Young Researchers Workshop: Kinetic Models in Biology and Social Sciences, Arizona State University.
  Talk: Asymptotic preserving schemes on kinetic models with singular limits.
2018.2.8 Mathematics Colloquium, University of South Carolina.
  Talk: Self-organized dynamics: aggregation and flocking.
2018.1.10-13 Joint Mathematics Meeting: AMS Special Session on Analysis of Nonlinear Partial Differential Equations and Applications, San Diego.
  Talk: Global regularity for Burgers equation with density dependent fractional dissipation.
2018.1.4 Mathematics Colloquium, Baylor University.
  Talk: Self-organized dynamics: aggregation and flocking.

2017

2017.12.9-12 SIAM Conference on Analysis of Partial Differential Equations, Baltimore.
  Talk: Global regularity for Burgers equation with density dependent fractional dissipation.
2017.11.30 Hyperbolic and Mixed Type PDEs Seminar, Pennsylvania State University.
  Talk: Self-organized dynamics: aggregation and flocking.
2017.11.4-5 AMS Sectional Meeting: Special session on Conservation Laws, Nonlinear Waves and Applications, University of California, Riverside.
  Talk: Global regularity for Burgers equation with density dependent fractional dissipation.
2017.11.4-5 AMS Sectional Meeting: Special session on Mathematical Fluid Mechanics, Nonlinear Waves and Applications, University of California, Riverside.
  Talk: Regularity and singularity formations for fractional porous medium flow.
2017.11.3 Special Analysis Seminar, University of Southern California.
  Talk: Self-organized dynamics: aggregation and flocking.
2017.10.26 Differential Equations Seminar, North Carolina State University.
  Talk: Self-organized dynamics: aggregation and flocking.
2017.10.25 Applied Mathematics and Analysis Seminar, Duke University.
  Talk: Self-organized dynamics: aggregation and flocking.
2017.10.20 Applied and Computational Mathematics Seminar, Tulane University.
  Talk: Self-organized dynamics: aggregation and flocking.
2017.10.9-13 Young Researchers Workshop: Current trends in kinetic theory, University of Maryland, College Park.
  Talk: Kinetic swarming models and hydrodynamic limits.
2017.9.9-10 AMS Sectional Meeting: Special session on Nonlocal PDEs in Fluid Dynamics, University of North Texas, Denton. [Co-organizer]
2017.9.9-10 AMS Sectional Meeting: Special session on Recent Progress on Hyperbolic Conservation Laws, University of North Texas, Denton.
  Talk: Global regularity for compressible Euler equations with alignment.
2017.7.10-14 SIAM Annual Meeting, Special Session on Recent Development on Fractional Diffusion Equation: Analysis and Computation, Pittsburgh.
  Talk: Global regularity for the fractional Euler alignment system.
2017.6.5-9 Summer School and Workshop: Mathematical Analysis of Water Waves and Related Models, Bodega Marine Laboratory, Bodega Bay.
2017.4.22-23 AMS Sectional Meeting: Special session on Analysis on the Navier-Stokes Equations and Related PDEs, Washington State University, Pullman.
  Talk: Global regularity for the fractional Euler alignment system.
2017.4.14 Partial Differential Equations Seminar, University of Houston.
  Talk: Self-organized dynamics: aggregation and flocking.
2017.3.23-25 Kinetic Descriptions of Chemical and Biological Systems: Models, Analysis and Numerics, Iowa State University, Ames.
  Talk: Global regularity for the fractional Euler alignment system.
2017.3.4-5 Texas Differential Equations Conference, Texas A&M University, College Station.
  Talk: Global regularity for Burgers equation with density dependent fractional dissipation.
2017.2.13-17 Dynamics of Small Scales in Fluids, Brown University, Providence.

 

 

 

 

 

 

Wednesday, 05 October 2016 17:24

Linearly independency for exponential functions

This is a supplementary notes for MATH211 ODE and Linear Algebra.

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