Dans cet article, nous formalisons deux critères de décisions qui tentent de rendre compte de deux logiques différentes d'interprétation du Principe de précaution. Le premier critère correspond à la maximisation du minimum de l'espérance d'utilité alors que le second critère correspond...

The aim of this paper is to evaluate to what extent more transparency can reduce the occurrence of speculative attacks. It proposes a survey of the literature about the pros and cons of transparency on the exchange rate market, which is one of the main pillars of the new international financial...

We develop a game-theoretic model of doping which focuses on the economic aspects of competitive sports. According to the model, incentives for athletes to use doping increase when (i) the efficiency of the drug test system is low, (ii) the number of competitions during one season is high, (iii)...

Bien qu'il est généralement admis en économie publique que le fossé qui sépare l'approche positive des choix publics et leur approche normative implique l'existence de possibles pareto améliorations dans les choix en matière de dépense publique, il semble que l'économiste manque...

Le présent papier s'articule autour des problèmes environnementaux globaux, et se propose de lier les négociations internationales au comportement de précaution. Cela nous conduit à montrer que le comportement de précaution peut aussi bien survenir à la suite d'un échec des négociations...

Among non-specialists, the estimates of the HIV/AIDS transmission rate are generally upwardly biased. This overestimation may be perceived as a godsend, as it increases the incentives to have protected sexual relationships. However, a pernicious effect may counterbalance this positive effect....

Voluntary Testing and Counseling (VTC) is a popular method for fighting the epidemic of HIV/AIDS. The purpose of VTC is to reduce the incidence of the virus in a twofold manner. First, testing provides access to health care and antiretroviral therapies (ARV) that diminish the transmission rate...

In this paper we consider a simple model of horizontal differentiation and derive the closed form solutions for the level of the variables in the decentralized economy and in the social planner case. This enables us to analyze consumers’ welfare as a function of the parameter representing...

We reconsider the optimal population size problem in a continuous time economy populated by homogenous cohorts with a fixed life span. Linear production functions in the labor input and standard rearing costs are also considered. First, we study under which conditions the successive cohorts will...

Until now most research in dynamic games focus on models with quadratic objective functions because of practical considerations. But in reality, all problems are not quadratic. In this paper, we solve a differential game where players have non-quadratic preferences. In particular we consider an...