This paper develops a one sector, two-input model with endogenous human capital formation. The two inputs are two types of skilled labor: engineering, which exerts a positive externality on total factor productivity, and law, which does not. The paper shows that a marginal prospect of migration...

The analysis of common goods needs to look very carefully at the characteristics of the goods and of the social situations of their provision. Different characteristics lead to different strategic constellations and therefore to different opportunities for institutional solutions to the problems...

Entwicklungsländern wird seit drei Jahrzehnten die Diversifizierung ihrer Exportstruktur empfohlen. Exportdiversifizierung soll nachhaltiges Wachstum ermöglichen und eine Verringerung der wirtschaftlichen Instabilität durch den Abbau wachstumshemmender Einflussfaktoren herbeiführen. Der...

The defense-growth nexus is investigated empirically using longitudinal data for Guatemala and allowing the effect of defense spending on growth to be nonlinear. Using recently developed econometric methods involving threshold regressions, evidence of a level-dependent effect of military...

This paper studies urban sustainability from the perspective ofexternalities. We develop a general spatialequilibrium model of a monocentric city, in which two types ofexternalities occur. On the one hand, pollution inthe industrial centre leads to a spatially differentiateddeterioration of the...

This paper discusses a number of issues centred around the evaluation of the benefits and costs of transport. It is argued that, for various reasons, transport cannot be treated as an ‘ordinary’ economic sector, and in the paper the policy implications of a number of the sector’s...

This discussion paper has resulted in an article in 'Economica', 2002, 69(273), 21-40.

Frequency of services and vehicle size are important policyinstruments of railway companies. Extending Mohring's basic'square root model' for frequencies, we arrive at more generalformulations for frequency, vehicle size and price underalternative regimes of welfare and profit optimisation. It...

This paper is concerned with the economics of urban externalities. We start by reviewing the literature on urban externalities, and observe that although many interesting contributions have been made, there seems to be sufficient scope and need for further research, both theoretically and...