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...

In this paper, we consider testing marginal normal distributional assumptions. More precisely, we propose tests based on moment conditions implied by normality. These moment conditions are known as the Stein (1972) equations. They coincide with the first class of moment conditions derived by...

This study develops a hybrid model to integrate climate risks into Côte d'Ivoire’s economic policy, drawing on the work of economists like Keynes, Ostrom, Stiglitz, Sen, and Nordhaus. The model combines decentralized governance, climate risk externalities, and capacity building to address the...

In this paper, we propose to solve the circular packing problem (CPP) whose objective is to pack n different circles C(i) of known radius r(i) , i = 1, …, n into the smallest containing circle C. The objective is to determine the radius r of C as well as the coordinates (x(i) , y(i)) of the...

Le crédit interentreprises est un des canaux de transmission du risque de défaillance des entreprises. Les impayés sur effets de commerce révèlent les interdépendances entre secteurs et leur potentiel de contagion, dès lors que les montants en jeu sont importants.

Nous proposons dans cet article une analyse critique du classement mondial des universités publié chaque année par l’Institut de l’Enseignement supérieur de l’Université Jiao Tong de Shangaï et plus connu sous le nom de « classement de Shangaï ». Après avoir rappelé comment le...

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...