Professor, Department of Management Sciences, City University of Hong Kong, China, from 2010.

Assistant Professor, Applied Statistics and Operations Research, City University of Hong Kong, China, 1995-1999.

Associate Professor, Department of Management Sciences, City University of Hong Kong, China, 1999-2010.

Visiting Scholar, Graduate School of Economics, Kobe University, Japan, 1997.

Visiting Scholar, Department of Statistics, University of Auckland, New Zealand, 1997.

Visiting Scholar, Institut fur Statistik, Ludwig-Maximilians Universitat Munchen, Germany, 2007-2008.

Adjunct Professor, School of Statistics and Management, Shanghai University of Finance and Economics, China, 2010-2013.

A.R. Bergstrom Prize in Econometrics, New Zealand Association of Economists, 1992.

British Academy Joint Activities Grant, 2003.

Applied Research Excellence Award (Business and Management Category), City University of Hong Kong, China, 2001.

Teaching Excellence Award, Department of Management Sciences, City University of Hong Kong, China, 2013.

Member, Local Organizing Committee, Bernoulli Society East Asian and Pacific Regional Conference, Hong Kong, 2003.

Member, International Organizing Committee, 9th International Conference of Forum for Interdisciplinary Mathematics, Allahabad, India, 2002.

Chair, Publications Committee, Hong Kong Statistical Society, 1999-2001.

Chair, Professional Services Committee, Hong Kong Statistical Society, 1998-1999.

Editor, Bulletin of the Hong Kong Statistical Society, 1999 -2001.

Associate Editor, Communications in Statistics: Theory and Methods, from 2014.

Associate Editor, Communications in Statistics: Simulation and Computation, from 2014.

Member of Editorial Board, Annals of Financial Economics (from 2015).

Member of Editorial Board, Journal of Risk and Financial Management (from 2015).

Member of Editorial Board, Journal of Informatics and Data Mining (from 2015).

Member of Editorial Board, Journal of Health & Medical Economics (from 2015).