[eng] The present study explores some of the problems encountered by econometricians working with panel data and shows that Paul Douglas view of production functions in his famous article "Are there laws of production?" is difficult to maintain when confronted with such data. We examine first...

[fre] Menée sur de grands échantillons d'entreprises des secteurs industriels et des services et commerces, pour les années 1984 et 1992, l'étude caractérise les savoirs spécifiques des entreprises en matière de recherche et d'informatique, à partir des effectifs de chercheurs, de...

We review the econometric literature on measuring the returns to R&D. The theoretical frameworks that have been used are outlined, followed by an extensive discussion of measurement and econometric issues that arise when estimating the models. We then provide a series of tables summarizing the...

The article examines the determinants of scientific productivity (number of articles and journals' impact factor) for a panel of about 3600 French and Italian academic physicists active in 2004--2005. Endogeneity problems concerning promotion and productivity are addressed by specifying a...

The paper examines the determinants of scientific productivity (number of articles and journals' impact factor) for a panel of about 3600 French and Italian academic physicists active in 2004-05. Endogeneity problems concerning promotion and productivity are addressed by specifying a generalized...

In order to study networks of collaboration between researchers, we propose a simple measure of the intensity of collaboration, which can be easily interpreted in terms of relative probability and directly aggregated at the laboratory level. We use it to characterize the relations of...

This paper presents some works realized under the sponsorship of the CNRS research program: The Economics of innovation: trends and issues [1997-2002]. Four topics are emphasized: The macroeconomic and microeconomic representations of the innovative process and the links between innovation,...

The development and spread of information and communication technologies (ICTs) fuelled by the very rapid and steady improvement in their performance, lead to a sustained increase in productivity gains. These productivity gains are likely to increase the potential output growth, in the medium to...

The lack of individual information on output prices is a major problem of the econometrics of production, which in particular could account for a significant part of the large discrepancies found in panel data studies between the cross-sectional and time series estimates of capital and scale...