
| 2004.09 | – | Present | Associate Professor and Professor, Department of Applied Statistics, Chung-Ang University |
| 2018.03 | – | 2019.02 | Visiting Scholar, Virginia Tech |
| 2012.01 | – | 2013.12 | Editor-in-Chief of 'Communications for Statistical Applications and Methods' |
| 2010.09 | – | 2011.08 | Visiting Scholar, Virginia Tech |
| 1996.03 | – | 2004.08 | Assistant Professor and Associate Professor, Department of Industrial Information Engineering, Gwangju University |