En considerant que l'une des caracteristiques des problemes environnementaux est le niveau d'incertitude qui les accompagne, nous proposons d'etudier les effets de ces incertitudes sur les comportements de choix de portefeuille et d'epargne des agents. Nous montrons alors qu'a l'equilibre...

This paper presents an overlapping generations model of environmental externalities with a depollution technology. We show that if an agent is sufficiently risk averse, voluntary contribution is a decreasing function of average efficiency of depollution technology. If on the contrary, the...

Nous proposons d'étudier dans un modèle à deux secteurs de production, les effets d'une incertitude portant sur la qualité de l'environnement sur les comportements de choix de portefeuille et d'épargne des agents. Nous supposons que les individus investissent dans les firmes par...

This paper presents an overlapping generations model of environmental externalities with a depollution technology. Each agent concerned by the environmental degradation can voluntarily contribute in order to reduce it. Contributing to the environmental quality means financing depollution...

This paper presents an overlapping generations model of environmental externalities with a depollution technology. each agent concerned by the environmental degradation can volutary contribute in order to reduce it. Contributing to the environmental quality means financing depollution activities...

En considerant que l'une des caracteristiques des problemes environnementaux est le niveau d'incertitudequi les accompagne, nous proposons d'etudier les effets de ces incertitudes sur les comportements de choix de portefeuille et d'epargne des agents. Nous montrons alors qu'a l'equilibre...

A tanulmány az árak és a koncentráció közötti összefüggéseket vizsgálja a magyar kiskereskedelmi üzemanyagpiacon. Bemutatja, hogy a koncentrációs szintek lokális különbségei csak kis részben magyarázzák az egyes földrajzi területek közötti adott időpontbeli jelentős...

The paper presents in contribution the development of theories and opinions about competition, competitiveness and antimonopoly policy. These topics are treated starting from the oldest time, e.g. from Aristotle, through antique world, early capitalism, A. Smith and the classical Ricardian...

This paper discusses the use of agent-based simulation models for regulatory advice in electricity market regulation. It briefly introduces the necessary procedures and the state-of-the-art of the methodology, and outlines its possible range of application. In a second part, the paper presents...

The aim of this paper is to study the relationship between advertising and sales of French manufacturing firms. First, we use a simple theoretical model compatible with past econometric studies of sales and advertising, and extend it to dynamics. We show that the models that do not account for...