Publications

Infrastructure projects are increasingly aiming to improve liveability, in particular in urban areas. We analyse a specific case in which an existing highway in an urban area was moved underground in order to improve intercity traffic flows and to reduce traffic externalities. →

Flood prevention policy is of crucial importance to the Netherlands. We assess economical optimal flood prevention where multiple barrier dams and dikes protect the hinterland against sea level rise and peak river discharges. Current optimal flood prevention methods only consider dike rings with no dependencies between dikes. We propose a graph-based model for a cost-benefit analysis to determine optimal dike heights with multiple dependencies between dikes and barrier dams. →

The existence of an urban wage growth premium is a well-established empirical fact. This article challenges the conventional view that faster wage growth for urban workers is caused by human capital spillovers. →

This article argues that the spatial scope of agglomeration economies is much more complex than is often assumed in the agglomeration literature. We provide insight into this issue by analyzing panel data on individual wages with a high level of spatial detail. →

According to the Melitz (2003) model, potential exporters have to be sufficiently productive to overcome the entry costs of foreign markets. Once firms pass this productivity threshold, they all export. However, empirical evidence indicates that a substantial share of high-productive firms do not export. →