We use a French firm-level panel data set over the period 1993-2004 to analyze the relationship between credit constraints and firms' R&D behavior over the business cycle. Our main results can be summarized as follows: (i) the share of R&D investment over total investment is countercyclical...

This paper proposes a model in the spirit of Aghion et al. (2005) that encompasses the magnitude of the impact of competition on R&D according to the cost of the innovation. The effect of competition on R&D is an inverted U-shape. However, the shape is flatter and competition policy is therefore...

The share of retail sales made via distance selling has increased steadily, driven by Internet sales. Meanwhile, a large body of research has been devoted to measuring the impact of online shopping on consumer prices. These studies are based primarily on microeconomic data and they reveal...

We study the adoption of lean production in American manufacturing for the past fifteen years. It is based on an intensification of work and is accompanied by an increase of occupational injuries and illnesses. Thus, for detailed manufacturing industries, we proxy reorganization by an indicator...

Les lois de conservation restent peu utilisees en economie. Cette note offre une nouvelle version du theoreme de Noether adaptee au contrat optimal, methode d'optimisation dynamique la plus souvent retenue en economie theorique. Ce theoreme permet de determiner des quantites invariantes le long...

In this paper we present an optimal growth model with convex-concave technology, for an open developing country. The latter may choose to produce consumption goods by borrowing on capital markets. We prove there exists two non trivial steady states. An optimal path converges either to 0 or to...

Through panel estimates using OECD country-industry statistics, this paper aims to clarify the determinants of rent creation and the mechanisms of rent sharing, and the role of market regulations in these processes. It uses a panel database of 4,136 observations, comprising industry-level data...

Les mesures en faveur de la concurrence pourraient avoir dans les PME un impact contrasté sur leur niveau d’innovation ; cependant, un accompagnement des PME en phase basse de cycle pourrait favoriser leur effort permanent d’innovation.

Advertising and innovation are two engines for firms to escape competition through a better attraction power toward consumers or quality advantage. We propose a model that encompasses both the static and dynamic interactions between R&D, advertising and competitive environment. This model...