Invited Seminars:

  1. 2nd PIMS-PARC-PRIMA International Workshop on Partial Differential Equations , Aug 25-27,2011, Seoul, Korea (Organizer)

  2. Regularity Theory and Asymtotic Behaviors in Nonlocal Equations of Porous Medium Type Progress in Variational Problems - Variational Methods in the Study of Evolution Equations, June 6-8, 2011, RIMS , Japan

  3. Regularity theory and Asymptotic Behaviors in Integro-differential operators The 11th International Workshop on Differential Equations, May 2-3, 2011 Chonnam University, Korea (Organizer)

  4. Homogenization of the Oscillating Data on a Lower Dimensional Surface Free Boundary Problems, Theory and Applications, March 7-11, 2011, MSRI, USA

  5. Regularity Theory in Elliptic and Parabolic Equations, Korea PDE School, Feb. 22-26, 2011, NIMS, Korea

  6. Regularity theory for Nonlinear Nonlocal equations with non-symmetric kernels PRIMA-PARC-PIMS meeting on PDEs, Dec. 7-8, 2010, Vancouver, Canada

  7. Homogenization of Soft inclusions 2010 CMS Winter meeting, Dec.4 -6, 2010, Vancouver, Canada

  8. Regularity Theory on Nonlocal Fully Nonlinear Equations Nonlocal Operator and its Applications, Nov. 6, 2010, KIAS, Korea

  9. Homogenizations of partial differential equations with oscillating boudary data Viscosity Methods an Nonlinear PDE, July 21 -July 23, 2010, Hokkaido University, Japan

  10. Regularity theory for the nonlocal equations International Workshop on Nonlinear Partial Differential Equations by SJTU and PARC, July 27-30,2010, China (Organizer)

  11. Homogenization with oscillating boundary data Conference On Nonlinear PDE's, 2010 Oct 5 - 8, Postech, Korea

  12. Regularity theory for the nonlocal equations KAIST-NIMS International Workshop on Nonlinear Partial Differential Equations: theory, application \& numerical computation Theme of the year: Nonlinear Conservation Laws , 2010.04.29~2010.05.02, KAIST, Korea

  13. Nonlinear Elliptic and Parabolic Equations: Analysis and Applications Joint Meeting of Korean Mathematical Society and the American Mathematical Society (Plenary Lecture), Dec. 16-20, 2009, Ewha University, Seoul, Korea

  14. Parabolic Method to Eigenvalue Problems for the Fully Nonlinear Equations Conference for Elliptic and Parabolic PDEs, Nov. 05-Nov. 07, 2009, Kaist, Daejeon, Korea

  15. 2nd SNU Workshop on Nonlinear Partial Differential Equations, Seoul, Korea (Organizer)

  16. Viscosity Method in Homogenization Free Boundary Problems, Theory and Applications, June 9--13, 2008, KTH, Stockholm, Sweden.(Focus sessions - Organizer)

  17. Parabolic methods in nonlinear eigenvalue problems Problems in the calculus of variations and related topics, June 23-25, 2008, Kyoto, Japan

  18. Parabolic method in nonlinear eigenvalue problems The 9th International Workshop on Differential Equations May 29-31, 2008 ,Chonnam National University, Kwangju, Korea (Organizer)

  19. Degenerate fully nonlinear equations An international conference in honour of Juan Luis Vazquez on the occasion of his 60th birthday. El Escorial (Spain), June 26-29, 2007

  20. SNU Workshop on Nonlinear Partial Differential Equations June 7-9, 2007, Seoul, Korea (Organizer)

  21. Degenerate Monge Ampre Equations Fabes Lecture 2007 July 3 - 4, Yonsei University

  22. The homogenization problems and the degenerate equations The 8-th Workshop on Dfferential Equations, June 2-3, 2006 Chonnam National University, Kwangju, Korea

  23. Geometric properties in elliptic and parabolic problems BIRS Workshop 06w5039 Nonlinear diffusions: entropies, asymptotic behavior and applications April 15 - April 20, 2006

  24. Parabolic method for nonlinear eigen value problems Free Boundary Problems Theory and Applications International Conference, 7-12 June 2005, Coimbra, Portugal

  25. Homogenization of highly oscillating obstacles Workshop "Global and Geometric Aspects in Nonlinear PDE", October 6 -12, 2004, Yerevan, ARMENIA

  26. Gauss Curvature flows with flat side Geometric Flows: Theory and Computation, February 23 - 27, 2004, IPAM, UCLA, USA

  27. Homogenization in Free boundary problems First Congress RSME-AMS 2003, Sevilla, Spain, on 18-21 June, 2003

  28. H\"older Regularity of Solutions to Degenerate Elliptic and Parabolic Equations A Workshop in Geometric and Global Properties in PDE with Applications, Royal Inst. of Technology, Stockholm, on June 11-14, 2003

  29. Large time behavior of solutions of the degenerate Equations KMS Spring Conference, Sogang University, Korea on April 26,2003.

  30. Geometric Properties on Parabolic flows The Third East Asia PDE Symposium Program, National Chung Cheng University Minghsiung, Taiwan on September 4-7, 2002

  31. Geometric properties in free boundary problems Vienna Workshop on Nonlinear Models and Analysis, Erwin Schroedinger Institute (ESI) Vienna, Austria on May 20-24, 2002

  32. The power-concavity on the nonlinear parabolic flows Symposium on Analysis and PDEs , Purdue University , USA on May 23-26, 2003

  33. Mathematical Investigations of Models in Combustion at IMA on Nov., 1999.

  34. Free-Boundary Regularity on the focusing problem for the Gauss Curvature with flat sides AMS Conference at Austin, Texas on Oct., 1999.