Cet article se propose de mettre en perspective les théories "traditionnelles" de la croissance régionale avec la théorie de l'entrepreneur. La revue de littérature que nous menons montre que, si la figure de l'entrepreneur n'est que très partiellement mobilisée dans les explications de la...

One answers to an open question of Herings et al. (2008), by proving that their fixed point theorem for discontinuous functions works for mappings defined on convex compact subset of $\R^n$, and not only polytopes. This fixed point theorem can be applied to the problem of Nash equilibrium...

The European Union in its widening movement shows five clusters of Third sector organisations with complex bonds and ties with the surrounding societies and national identities In introduction, we compare briefly the Europe's Third sector features to North America's ones (Historical and...

Using a capital-skill complementarity technology, we analytically show that an increase in the direct redistributivity of Pay-As-You-Go (PAYG) pension systems has a positive impact on wages and on wage inequalities. We also show that life expectancyinequalities play an important role in the...

The paper proposes a methodology called OP-KNN, which builds a one hidden- layer feedforward neural network, using nearest neighbors neurons with extremely small com- putational time. The main strategy is to select the most relevant variables beforehand, then to build the model using KNN...

In this paper we study the macroeconomic impact of a policy which changes the redistributive properties of an unfunded pension system. Using an overlapping generations model with a closed economy and heterogenous agents, we show that a weaker linkbetween contributions and benefits has an impact...

To construct models and to apply quantitative techniques in order to explain the cyclical movements of the economy is one of the main aims of “X-Crise” group (nickname of “Centre Polytechnicien d'Etudes Economiques”) at the “Ecole Polytechnique” in Paris. Indeed, french...

Le diagramme du cobweb est considéré comme l'une des premières formalisations mathématiques permettant de poser le problème de la stabilité d'un processus marchand (Ezekiel [1938]). Moore fut le premier à avoir l'intuition d'un tel diagramme (Stigler [1962]) même s'il faut attendre la...

Coraz czesciej rozwój gospodarczy nie jest pojmowany jedynie jako rezultat wymiany handlowej, lecz jako wypadkowa złożonego zbioru relacji między jednostkami zgrupowanymi na danej przestrzeni geograficznej mającej pewną kulturę i historię. Celem artykułu jest przedstawienie kilku uwag i...

This paper aims to provide a unified theoretical framework of the two hypotheses proposed by Friedman: (i). increased variability of money supply results in the decline of income velocity of money and (ii) high inflation leads high variability of inflation which reduces potential output growth....