In this paper we modify a standard quality ladder model by assuming that R&D is driven by outsider firms and the winners of the race sell licenses over their patents, instead of entering directly the intermediate good sector. As a reward they get the aggregate profit of the industry. Moreover,...

Jamendo, est un site de téléchargement légal gratuit de musique. Cette plate-forme de musique " libre " en ligne, la plus grande au monde, fonctionne sur la base de licences Creative Commons. L'enquête que nous présentons ici a été réalisée auprès d'un échantillon de 767 artistes,...

The "General-Self-Control-Preference" model introduced by Noor and Takeoka (2010) allows to take into account non linear costs of Self-Control. In this paper we extend this theory to situations in which a decision-maker faces ambiguity. We focus on the fact that lack of information is a...

Many OECD countries have changed the rules for immigrants in recent decades, generally making harder to enter and to stay. France is one example. This paper studies the immigrants' response to the 2004 reform of the immigration law, which made it harder for foreigners to obtain resident status....

We consider the problem of option hedging in a market with proportional transaction costs. Since super-replication is very costly in such markets, we replace perfect hedging with an expected loss constraint. Asymptotic analysis for small transactions is used to obtain a tractable model. A...

We study optimal sustainable policies in a benchmark logistic world (where both population and technological progress follow logistic laws of motion) subject to a pollution ceiling. The main policy in the hands of the benevolent planner is pollution abatement, ultimately leading to the control...

The literature on the impact of an abundance of natural resources on economic performance remains inconclusive. In this paper we consider the possibility that countries may follow different growth regimes, and test the hypothesis that whether natural resources are a curse or a blessing depends...

Les AMAP ont connu une croissance assez linéaire et même assez forte, puisqu'après leur apparition en 2001, elles étaient déjà de l'ordre de 500 en 2006, et environ 1600 en 2013. Très tôt, dès 2001, le réseau s'est structuré sous la forme d'associations régionales dans certaines...

We derive testable conditions ensuring that the income tax is optimal when agents are ex-ante identical but face idiosyncratic income risk. The optimal tax depends positively on both absolute risk aversion and risk variance and negatively on labor supply elasticity and absolute prudence. The...

We prove that the introduction of endogenous indivisible labor supply into the vintage capital growth model does not rule out the turnpike and optimal permanent regime properties, notably the non- monotonicity properties of optimal paths, inherent in this model.