At the moment I am an associate professor at the VU amsterdam, where I teach courses in regional and urban economics and some specialed transportation courses for business adminstration students. My research focuses mainly on the relation between commuting, household and firm location, for which I am partly employed at the Netherlands Environmental Assessment Agency (PBL). My current main projects are:- Research & model the spatial interaction between firms and households- Scenario analysis of population and employment dynamics in the Netherlands- The relation between European regional trade and growth- Project X: create a (micro-)simulation model of the socio-economic interaction between neighbourhoodsSpecialties: Spatial econometrics; Regional & Urban Economics; Immigration and ethnic segregation