1978-2009: Amsterdam Police (Uniform, criminal investigation department, Intelligence and Research):
- community policing;
- use of demographics and crime statistics in combination (Socio-demographic factors in crime analysis);
- social network analysis.
- geographic analysis (hotspotting, targetting, profilling)
2009-2013: Dutch Militairy Police (Intelligence and Research)
2013-now: Addwhere Urban Intelligence / UrbanResearch
- urban sociology, police sociology and criminology
- Advice, (knowledge and analysis) to support the public sector in the areas of safety, liveability (in neighborhoods) and social integrity;
- Analysis of Big Data en Open Data with Geographic Information-systems ...