We derive the characteristics of firm-specific trade policies when industries consist of heterogeneous firms, and show how the informational requirements for policy design are thereby expanded. A consideration of these informational requirements indicates that governments will confront...

En utilisant le modele du Principal-Agent pour decrire la relation qui peut s'etablir entre un trafiquant ou un membre d'une organisation criminelle et un organisme financier, nous montrons qu'il existe des incitations economiques a l'etablissement d'une negociation entre eux pour fixer les...

We present new conditions that guarantee the existence of mechanism with a unique or essentially unique equilibrium in auction and public goods problems with quasi-linear utility functions. These conditions bear only on the information structures of the agents.

We consider an economic system composed of interacting potential adopters of a technology. We build a model of interindividual influence effects in which part of the links can be negative, in a context of bounded rational choice. The article shows how the sole relationships topology on a network...

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...

This paper proposes a model which intends to analyse the alternative between discrimination and mutualisation in insurance. We suppose there exists an observable (but initially hidden)variable, that predicts the level of risk of an individual. This variable can be observed through a testing...

Preorder representation results are applied to a normative valuation theory for dealers setting bid-ask spreads in a dynamic framework. The preorders induced by ask and bid prices of marketed assets should satisfy some axioms in order for prices not to yield arbitrage opportunities to traders...

In real markets, price adjustment and the matching of buyers and sellers involve considerable exchange of information. Previous experience is also important in partner selection and in the decision to accept a transaction. The dynamic processes involved can be described in terms taken from...

Dans un jeu differentiel d'accumulation de capital a deux joueurs avec investissement reversible nous proposons une methode simplificatrice pour calculer l'equilibre de Nash en boucle ouverte. nous calculons aussi la solution centralisee et nous comparons les deux resultats a travers leurs...