2009 – 2011

• Visiting Professor, Department of Transportation and Communication Management, National Cheng-Kung University, Taiwan

• Visiting Professor, Chang'an University, Xi'an, China

2006 - present

• Professor, Dept. of Civil and Environment Engineering, NJIT, NJ

2001-2006

• Associate Professor, Dept. of Civil and Environment Engineering, NJIT, NJ

1996-2001

• Assistant Professor, Dept. of Civil and Environment Engineering, NJIT, NJ