professional service activities
- University of Puerto Rico Mayaguez Associate Professor 2007 -
- University of Puerto Rico, Mayagüez Campus Assistant Professor 2003 - 2007
- University of Illinois, Chicago Visiting Lecturer & Visiting Research Specialist 2000 - 2003
- University of Hawaii Postdoctoral Fellow 1999 - 2000
- University of Edinburgh, UK Postdoctoral Fellow 1995 - 1996