About
I am a professor emeritus of the Institute of Applied Mathematical Sciences and the Department of Mathematics at National Taiwan University.
My research interests include partial differential equations, scientific computing, fast algorithms, and image sciences.
I have taught many different subjects of analysis and applied mathematics including advanced calculus, applied analysis, ordinary differential equations, partial differential equations, numerical analysis, numerical linear algebra, numerical partial differential equations, scientific computing, wavelets, fast algorithms, computational and applied mathematics, financial mathematics, compressive sensing, medical imaging, image processing,discrete differential geometry, continuum mechanics, etc.
In addition, I am also involved in high school mathematics education. I have chaired the committee of 2010 High School Mathematics Standard (99高中數學課綱). I am also engaged in the development of applied mathematics in Taiwan. I have been the President of the Taiwan Society for Industrial and Applied Mathematics (TWSIAM) 20122018.
Education

Ph.D., Mathematics, New York University, 1983.

M.S., Mathematics, National Taiwan University, 1978.

B.S., Mathematics, National Taiwan University, 1975.
Experience
 Professor Emeritus, Dept. of Math., National Taiwan University (2018)
 Consultant, Moldex3D Software Company, Zhubei City, Taiwan (20182022)
 Chair Professor, Dept. of Math., National Central Univ. (20142015)
 Director, Center of Mathematical Modeling and Scientific Computing, National Chiao Tung
University (20122014)
 Chairman, Dept. of Math., National Taiwan University (19992002)
 Professor, Dept. of Math., National Taiwan University (19912014,20152018)
 Assistant Mathematician, Math & Comput. Sciences, Argonne National Lab. (19891991)
 Research Assistant Professor, Courant Institute, New York Univ. (19871989)
 Associate Research Fellow, Inst. of Math., Academia Sinica (19831989).
Awards
 Fellow, Taiwan Society for Industrial and Applied Mathematics, 2020.
 Society Award, The Mathematical Society of the Republic of China, 2018.
 Chair Professor, National Central Univ. 20142015.
 Distinguished Professor, National Chiao Tung University, 20122014.
 Distinguished Professor, National Taiwan University, 20082011.
 Outstanding Research Award, NSC, 19921993
Professional Services
 President of the Taiwan Society for Industrial and Applied Mathematics, 20152018.
 President of the Taiwan Society for Industrial and Applied Mathematics, 20122015.
 Vice President of the Chinese Mathematical Society, 20022004.
 Executive committee member, Scienti c committee member, Asia section, Society of Industrial
and Applied Mathematics, 2005now.
Ph.D Students
 Yuguo Liu, A majorizationminimization algorithm for electrical impedance tomography, 2018.
 YiCheng Hsu, Mathematical theory and technical designs for magnetization excitation in high field MRI, 2013.
 LiRen Lin, Mass Redistribution and Its Applications to the Ground States of Spin1 BoseEinstein Condensates, 2013.
 YuChen Shu, A Coupling Interface Method for Elliptic Interface Problems, 2007.
 Jengnan Tzeng, Subspace Watermarking Method for Copyright Protection:Symmetric and Asymmetric, 2003.
 ChienChang Yen, Difference Wavelets and Wavelets on Intervals, 1999.
Master Students: 34 (see CV)