The purpose of this paper is to explain differences in the productivity of capital across countries taking 84 rich and poor countries over the period 1980-2011, and to test the orthodox neoclassical assumption of diminishing returns to capital. The marginal product of capital is measured as the...

This paper proposes two types of AK-style endogenous growth models to test the physical capital accumulation hypothesis in a ‘typical’ developing country with multiple regimes: a strong version, in which technological progress is fully endogenous to capital accumulation, and a weaker...

In the past Portugal managed to grow at a significant rate, but the pace has getting slower and slower from decade to decade, until becoming practically stagnant in the first decade of the 21st century. This stumpy growth together with the current debt crisis has fed the rhetoric of structural...

It is widely recognized that scientific research has a dramatic impact on economies since it is crucial to foster technological knowledge. Today’s migratory movements and concentration of highly educated population and population with high scientific potential in developed countries play an...

Given a panel of oil producing countries, we show that a higher oil concentration is associated with an increase in economic growth through capital efficiency in: (i) countries with medium and low income per head from East Asia & Pacific and Latin America & the Caribbean, classified as followers...

We examine the behavior of the skill premium in a two-country general equilibrium growth model assuming (i) technological-knowledge diffusion; (ii) internal costly investment in both physical capital and R&D; and (iii) complementarities between intermediate goods in production. We find that these...

We propose a new framework to analyse the wage premium behaviour. Building on Acemoglu and Zilibotti (2001), we introduce physical capital and two assumptions: (i) internal costly investment in both capital and R&D; (ii) complementarities between capital goods in production. We find that, for...

This paper presents capital services estimates for 26 Portuguese industries for the 1977-2003 period. The estimation procedure follows an integrated approach under which the flows of capital services are approximated as a proportion of the capital stock converted into standard efficiency units....

In this study we re-evaluate the impact of natural resources on economic growth. The reassessment is based on a growth model where, using panel-data analysis, natural-resource variables (geographically diffused and concentrated) affect the efficiency gains of labour and capital in production. We...

We summarise Runge-Kutta type methods for the solution of ordinary differential equations in models of economic dynamics. In this work we are going to present explicit Runge-Kutta type methods, a family of methods to solve numerically systems of ordinary differential equations, without the need...