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| 2010.8-2016.7 | Professor and Chair, Department of Industrial Engineering & Management, Yuan-Ze University,Taiwan, R.O.C. |
| 2005.8-2007.8 | Professor, Deputy Dean of Academic Affairs, YZU |
| | Consultant to various companies including TECO Electric & Machineary Co., Far Eastern Textile, Far Eastern International Bank, Chung Hwa Picture Tubes, Unimicron |
| 2001-Present | Six Sigma Consultant:長春、遠紡、敬鵬、欣興 |
| 1999-2002 | Professor, Dean of Life Long Eduaction, YZU |
| 1997.9-1998.6 | Professor, Dean of Academic Affairs, YZU |
| 1996-1997.6 | Professor, Deputy Dean of Academic Affairs, YZU |
| 1996-1997 | Professor, Director of Teaching Center, YZU |
| 1995-1996 | Professor, Director of Registration, YZU |
| 1995-Present | Professor, Department of Industrial Engineering, YZU |
| 1989-1995 | Associate Professor, Department of Industrial Engineering, YZU |
| 1985-1989 | Research/Teaching Assistant, Arizona State University |
| 1982-1983 | Manufacturing Engineer, Electronic & Magnetic Memory Co., Taiwan (EMMT) |