| 2023- |
Professor and Department Chair, University of Miami, Department of Chemical, Environmental and Materials Engineering, Coral Gables, FL
|
| 2020 |
Visiting Professor, Helmholtz Zentrum München, Department of Lung Biology, Munich, Germany |
| 2013-19 |
Department Head, University of Florida, Department of Environmental Engineering, Gainesville, FL. |
| 2012 |
Special International Guest Professor, Osaka Prefecture University, Department of Chemical Engineering, Sakai, Osaka, Japan
|
| 2012 |
Special International Guest Professor, Osaka Prefecture University, Department of Chemical Engineering, Sakai, Osaka, Japan |
| 2012-13 |
Guest Professor, National Cheng-Kung University, Department of Environmental Engineering, Tainan, Taiwan |
| 2012- |
Program Director for Engineering Education Research, University of Florida, Engineering School of Sustainable Infrastructure and Environment, Gainesville, FL. |
| 2009- |
Professor, University of Florida, Department of Environmental Engineering, Gainesville, FL. |
| 2009- |
Guest Professor, East China University of Science and Technology, Shanghai, China |
| 2005-06 |
Visiting Scholar, University of California – Davis, Department of Civil & Environmental Engineering, Davis, CA |
| 2004-2009 |
Associate Professor, University of Florida, Department of Environmental Engineering, Gainesville, FL. |
| 1998-2004 |
Assistant Professor, University of Florida, Department of Environmental Engineering, Gainesville, FL. |
| 1997-98 |
Research Associate, New Jersey Institute of Technology, Particle Processing Research Center, Newark, NJ |
| 1992-96 |
Research Assistant, University of Cincinnati, Cincinnati, OH |
| 1994-96 |
Teaching Assistant, University of Cincinnati, Cincinnati, OH. |
| 1989-91 |
Ordnance Second Lieutenant, Medical Company and Transportation Company in Army, Taiwan. |
