In this paper, we extend the Romer (1990) model in two ways. First, we include energy consumption of intermediates. Secondly, intermediates become heterogeneous due to endogenous energy saving technical change. However, aggregate effective capital is still subject to endogenous technical change...

In this paper, the effects of uncertainty and of various policy instruments on the lengthand attractiveness of private research projects are studied. Research expenditure can beregained from quasi-rents that are earned by exploiting patents on the fruits of research.The accumulation of knowledge...

The methods by which fuels can be converted into electricity all belong to different “technology families”: the “gas-fired-turbine-family”, the “coal-fired-turbine-family”, etc. Each family consists of different generations of similar technologies, as in a vintage model. Within a...

This paper investigates whether the inherent non-stationarity of macroeconomic time series is entirely due to a random walk or also to non-linear components. Applying the numerical tools of the analysis of dynamical systems to long time series for the United States, we reject the hypothesis that...

Vintage models have been around for a long time now. Since their conception in the late Fifties and early Sixties they have been adopted by economists interested in the connection between technical change and economic growth, because they highlight a number of important insights regarding the...

In this paper we present the outlines of an endogenous growth model that focuses on the labour market- and skill-aspects of economic policy measures that may have an impact on technological change, and hence on the long term effectiveness of the policy measures concerned. The link between skills...

In this paper we present an endogenous growth model based on Lucas (1988). We have extended the Lucas model by incorporating ICT-capital next to human capital. We take account of spillovers from ICT use in human capital formation to final output production. The effects on growth of these...

In this paper we present a model that addresses the issue of the uneven distribution ofemployment opportunities over low- and high-skilled workers in a context of skill-biasedendogenous technical change. In our model, technical change consists in part of productinnovation. There is also process...

The labour market position of low skilled workers has deteriorated dramatically over the 80s and early 90s. Awell-known manifestation of this deterioration is the rise in relative high-skilled wages observed in the UnitedStates. It is a well-documented fact that demand shifts underlie this...

In analysing the impact of education on wage differentials and wage growth, we use next to personal characteristics (e.g. education) also job characteristics (e.g. skills required) to explain wages. We estimate wage equations on individual data for the Netherlands, 1986 – 1998. It turns out...