In a world characterized by the occurrence of uncontrollable and extreme events investors are often required to make decisions on the basis of the available information. The challenge they face is how to manipulate these information sets in order to get what can lead them to the optimal...

Cet article examine empiriquement les déterminants de l’utilisation des produits dérivés par un échantillon de sociétés non financières françaises. Les résultats des tests font apparaître le levier (le proxy des coûts de la détresse financière), le rendement des dividendes, la...

We study portfolio allocation and characterize contracts issued by firms in the international financial market when investors exhibit ambiguity aversion and perceive ambiguity in assets issued in foreign locations. Increases in the variance of their risky production process cause firms to issue...

We decompose the generalized Lorenz order into a size and a distribution component. The former is represented by stochastic dominance, the latter by the standard Lorenz order. We show that it is always possible, given generalized Lorenz dominance between two distributions F and G, to find...

This paper gives an overview of the way the issue of poverty measurement is typically addressed in economics. After having briefly defined what is meant by poverty in economics, I examine successively the unidimensional approach to poverty based on the income or expenses, and the...

We model the optimal behavior of the public decision-maker of an African country plagued by covid-19, with little fiscal room for maneuver and facing a health-economy dilemma. The model shows that a substantial part of the economic costs of covid-19 is due to a deficit in tropicalization of the...

This papers studies three questions. What do we know about criminals 'preferences ? How should we represent such preferences ? What are the consequences for law enforcement policies ?

À l’origine de cette thèse se trouve la question suivante : « Qu’est-ce qui rend possible et justifie que les licenciements économiques soient de plus en plus nombreux dans les entreprises en bonne santé ? » Autrement dit : « en quoi les décisions de licenciement sont-elles des...

Abstract: The decision theory under risk or uncertainty has for object to describe the behavior of agents facing several uncertainty perspectives, waited that every agent is characterized by preferences that are him clean. As it is difficult to describe these preferences exhaustively, we try to...