When bidders are not substitutes, we show that there is no standard ascend-ing auction that implements a bidder-optimal competitive equilibrium under truthful bidding. Such an impossibility holds also in environments where the Vickrey payoff vector is a competitive equilibrium payoff and is thus...

In the symmetric independent private value model, we revisit auctions with entry by adding two additional ingredients: difficulties to commit to the announced mechanism, in particular not to update the reserve price after bidders took their entry decisions, and seller's ex ante uncertainty on...

This paper considers the implementation of an economic outcome under complete information when the strategic and informational details of the participation game are partially-specified. This means that full participation is required to be a subgame-perfect equilibrium for a large variety of...

We consider standard auction models when bidders' identities are not observed by the econometrician. First, we adapt the definition of identifiability to a framework with anonymous bids and we explore the extent to which anonymity reduces the possibility to identify private value auction models....

In this paper, we shed light on the selection of the benefi ciaries from the French competitiveness cluster policy which was launched in 2005 and extended to 2012. We disentangle the selection and self-selection eff ects, as emphasized in the theoretical literature on regional and industrial...

Will employment instability be the employment pattern tomorrow? Many studies support this view which is first discussed on the basis of various statistical studies already carried out. A general trend of employment instability is not proved to be true by statistical data. These data show that...

Analyse de l'accaparation d'actifs (asset grabbing) lors des privatisations, sur les marchés financiers et dans le "shadow banking"par des oligarques comme émergence d'une économie où le "gagnant rafle tout" (winner take all) formant un secteur "cupidaliste". Son apparition dans l'économie...

In 1998 the Fifty-first World Health Assembly passed the "health-for-all policy for the twenty-first century". During this assembly the Member States of the World Health Organization (WHO) reaffirmed their commitment to the principle that "the enjoyment of the highest attainable standard of...

A government agency delegates to a provider (hospital, medical gatekeeper, school, social worker) the decision to supply a service or treatment to individual recipients. The agency does not perfectly know the distribution of individual treatment costs in the population. The single-crossing...

This paper intends to analyze some macroeconomic aspects in the framework of the Optimal Taxation Theory. First of all Optimal Taxation filiation will be considered in studying the three functions of the state described in Musgrave's work. The collective book published in 1994, and entitled...