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Endogenous Technological Change under Uncertainty

de Hek, Paul A. - 2002

How does risk or uncertainty in the productivity of research affect the growth rate of the economy? To answer this question, a model of endogenous technological change is used where sustained growth stems from intentional investments in R&D from profit-maximizing firms. The uncertainty arises...

Persistent link: https://www.econbiz.de/10010324994

Maintenance Costs, Obsolescence, and Endogenous Growth

Berden, Koen G.; van Marrewijk, Charles - 2001

We analyze the impact of obsolescence of economic inventions by incorporating maintenance costsin the endogenous growth model of expanding product varieties. This contrasts with the existingliterature, which ignores maintenance costs and uses the model of quality improvements todescribe...

Persistent link: https://www.econbiz.de/10010325047

Differential Impact of Environmental Policy Instruments on Technological Change: A Review of the Empirical Literature

Vollebergh, Herman R.J. - 2006

recent literature is that there is a clear impact of environmental policy on invention, innovation and diffusion of …

Persistent link: https://www.econbiz.de/10010325490

New Explanatory Models for Analysing Spatial Innovation: A Comparative Investigation

Reggiani, A.; Nijkamp, P.; Sabella, E. - 1999

Innovation research has become an important topic in regional science analysis. Yet the modelling base of much … innovation research is still feeble. This paper aims to map out the research potential of recent approaches in quantitative … space-economy. The urban context of European innovation processes is used as an empirical background. The paper addresses …

Persistent link: https://www.econbiz.de/10010324662

The Right Man for the Job

Teulings, Coen N.; Gautier, Pieter A. - 2000

This paper describes a search model with a continuum of worker and job types, free entry and transferable utility. We apply a second-order Taylor expansion to characterize the equilibrium, derive the cost of search and show that it is decreasing in the substitutability of worker types. This cost...

Persistent link: https://www.econbiz.de/10010324665

Search and the City

Teulings, Coen N.; Gautier, P.A. - 2002

We develop a model of an economy with several regions, which differ in scale. Within each region, workers have to search for a job-type that matches their skill. They face a trade-off between match quality and the cost of extended search. This trade-off differs between regions, because search is...

Persistent link: https://www.econbiz.de/10010325015

The Elasticities of Complementarity and Substitution

Broer, Peter - 2004

This paper argues that the conventional definition of the elasticity of complementarity is not well suited to deal with the case of increasing returns. It proposes a slightly different formula, that uses a distance function formulation instead of a production function. The proposed definition...

Persistent link: https://www.econbiz.de/10010325495

A Monopolist in Public Transport: Undersupply or Oversupply?

Karamychev, Vladimir A.; van Reeven, Peran - 2009

A monopolist in public transport may oversupply frequency relative to the social optimum, as van Reeven (2008) demonstrates with homogeneous consumers. This result generalizes for heterogeneous consumers who know the timetable. Whether a monopolist oversupplies or undersupplies frequency depends...

Persistent link: https://www.econbiz.de/10010325685

Optimal Diversity in Investments with Recombinant Innovation

van den Bergh, Jeroen C.J.M.; Zeppini-Rossi, Paolo - 2008

innovation. We develop a formal model of an innovation arising from the combination of two existing modules with the objective to … innovation) and the benefits associated with returns to scale. We derive conditions for optimal diversity under different regimes …

Persistent link: https://www.econbiz.de/10010325999

Optimal Growth, Coordination and Sustainability in the Spatial Economy

van den Bergh, Jeroen C.J.M.; Nijkamp, Peter - 1997

Until recently, the interaction between environmental quality, economic activity and growth is predominantly considered in an a-spatial context. Traditional neoclassical growth theory following Solow/Swan has mainly addressed questions about environmental and resource limits to growth. Recently,...

Persistent link: https://www.econbiz.de/10010324577

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