Research Interest

Generalized Finite Element Methods    

Method of Subspace Corrections 

Exact Controllability Technique for the Solution of Highly Indefinite Equations 

Papers

A Multilevel Preconditioning for Generalized Finite Element Method Problems on Unstructured

Simplicial Meshes ( with Ludmil Zikatanov ). [PDF file] Journal of Numerical Mathematics,

15 (2007), no. 3, 163-180.

New Estimates for the Rate of Convergence of the Method of Subspace Corrections

( with Jinchao Xu and Ludmil Zikatanov ) [PDF file] Numer. Math. Theor. Meth. Appl., 1 (2008),

no. 1, 44-56.

A Multilevel Preconditioning for Elasticity based on Generalized Finite Element Method

for Scalar Problems ( with James Brannick, Jinchao Xu and Ludmil Zikatanov ) [PDF file] Preprint

The Exact Controllability Method for the Solution of the Helmholtz equation

with Large Wave Number ( with James Brannick and Ludmil Zikatanov ) [PDF file] Preprint

Honors

Fellowship at the Pennsylvania State University                                       Fall 2001                          

4th place at the 1996 National Mathematics Contest held

by the Korean Mathematical Society

Fellowships from the Korea Scholarship Foundations with                        1993 - 1994

which the Korean Research Foundation merged in 1999