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...

This paper formalizes one mechanism through which diversification in the production of research & development across firms located in a city dampens volatility in the local labor market, improves the incentives to perform research & development and smooths the aggregate business cycle...

The paper models the evolution of regional asymmetries, and the associated intra-distribution mobility, as the outcome of adoption decisions taken by firms at different locations. The following equilibria are characterised: Persistent asymmetry where nobody adopts, Leapfrogging where low-quality...

A very striking change in product selection over the last century has been the increased degree of specialisation of durable goods. To analyse these changes this paper introduces a new form of product differentiation called functional. It is shown that when a homogeneous population demands...

Renewables require support policies to deliver the European 20% target. We discuss the requirements for least cost development and efficient operation and quantify how different schemes (i) allow for the development of a renewable energy technology portfolio; (ii) reduce rent transfers to...

Alterar la tecnología de transacciones es un proceso endógeno motivado por el deseo de los agentes privados de reducir los requerimientos de efectivo para llevar a cabo un monto dado de transacciones en la economía. Generar este cambio en la tecnología de transacciones es costoso y un mayor...

In a duopoly where each firm produces substitute goods, we show that under process innovation, specialization is the equilibrium attained with cross-licensing. Each firm produces only the good for which it has an advantage. Patent pool extension confirms the results.

The modern view of the labor market holds that unemployment is high in economies where unions are strong and the government and other institutions impose on firms obligations that raise the cost of labor. This view is generally correct and yields a clear policy implication: more competition in...

I study the joint determination of market structure and growth in an oligopolistic economy. Firms run in-house R&D programs to produce over time a continuous flow of cost-reducing innovations. In symmetric equilibrium, the relation between market structure and growth has two aspects. First, a...

We generalize the class of growth models in which the scale of the economy has level rather than growth effects, and study the implications of different demographic and research policies when both fertility choice and research effort are endogenous. The model incorporates two dimensions of...