**Organization of Workshop and Conference**

l CAU-Kyoto University Joint Workshop on Nonlinear PDEs, 2013,
February 15-16, Chung-Ang University (with D. Chae and Y-K. Cho).

l CAU Conference on Partial Differential Equations, 2011,
August 17-19, Chung-Ang University.

l Workshop on PDE: Variational
Methods and Related Topics, 2011, June 28-29, Chung-Ang
University (with Han, Jongmin)**.**

l Harmonic analysis and PDE, 2010, August 18-20, Seoul National
University (with Lee, Sanghyuk).

l The Second Workshop on Partial Differential Equations of
Mathematical Physics, 2010, January
21-22, Hankuk University of Foreign Studies (with
Han, Jongmin).

l Lectures on Partial Differential Equations, 2009, August
20-21, Myongji University.

**Invited talk**

l Workshop on Harmonic Analysis and Dispersive
Equations, Chonbuk National University, Aug 8-10,
2012.

l PDE winter school 2012,
NIMS, Jan 9-13, 2012.

l The 8th East-Asia PDE Conference, Postech, Dec 19-22, 2011.

l PDE winter school 2011,
NIMS, Feb 22-26, 2011.

l The third workshop on Partial Differential
Equations of Mathematical Physics, Chonbuk National
University, Jan 6-7, 2011.

l Korean Mathematical Society
Spring Conference, Chungnam National University,
April 24-25, 2010.

l Seminar Talk, KIAS, Sep 26, 2009.

l Seminar Talk, POSTECH, Sep 18, 2009.

l Seminar Talk, POSTECH, Aug 10-14 , 2009.

l Workshop on Partial Differential Equations
of Mathematical Physics, Chonbuk National University,
Dec 18-19, 2008.

l Workshop on Partial Differential Equations
and Fluid Mechanics, Sungkyunkwan University, Dec
8-10, 2008.

l Seminar Talk, UCLA, Jan 24-Feb 5, 2008.

l Nonlinear Wave and Dispersive Equations,
Kyoto University, Jan 21-23, 2008.

l Seminar Talk, Sungkyunkwan
University, July 23-29, 2007.

l Seminar Talk, Kumamoto University, July 21,
2007.

l Seminar Talk, Tohoku University, March 8,
2007.

l Nonlinear Wave and Dispersive Equations,
Kyoto University, Jan 15-16, 2007.

l Ropponmatsu Seminar in Kyushu University, Fukuoka, Dec
22, 2006.

l Seminar on PDE, KIAS, Dec 1-6, 2006.

l Workshop on PDE and Mathematical Physics,
Seoul National University, Aug 21-22, 2006.

l Seminar Talk, Nagoya University, May 11,
2006.

l Nonlinear Dispersive and Wave Equations,
Kyoto University, Jan 26-27, 2006.

l Asymptotic Analysis and Singularity, Tohoku
University, July 18-23, 2005.