1991, Ph.D. in Mathematics, University of Maryland, College Park. Advisor: Professor Ivo Babuska
1986, M.S. in Mathematics, Chinese Academy of Sciences. Advisor: Professor Hongci Huang
1983, B.S. in Mathematics, Fudan University

Chair of Department of Mathematics, January 2020 - December 2022
Director of AMCS, 2007 - January 2020
Associate Chair and Director of Undergraduate Program, Department of Mathematics, 2005 - 2007
Professor, Department of Mathematics, 1999 - present
Professor, AMCS, 1999 - present
Professor, CCAD, 1999 - present
Associate Professor, Department of Mathematics, 1996 - 1999
Associate Professor, AMCS, 1997 - 1999
Associate Professor, CCAD, 1997 - 1999
Assistant Professor, Department of Mathematics, 1991 - 1996

Fellow of the American Mathematical Society, class of 2023
Honored by the special issue Recent Advances on Inequality Problems: Mathematical Analysis, Numerical Solution, and Applications in Mechanics and Engineering in Nonlinear Analysis: Real World Applications, 2023
Named a Highly Ranked Scholar--Lifetime in the Specialty of Numerical Analysis by ScholarGPS, in recognition of exceptional productivity, noteworthy impact and quality of scholarly work in the top 0.05% of scholars in the Specialty worldwide, 2022 (first edition), 2023 (second edition), 2024 (third edition)
Named a Best Mathematics Scientist in the Research.com ranking of top Mathematics scientists in 2022 (first edition), 2023 (second edition), 2024 (third edition)
Collegiate Fellow, 2010 - 2015, 2015 - 2020, 2020 - present
Simons Fellow, 2012