La concentration industrielle n'a cessé d'augmenter ces vingt dernières années. Cette concentration est présente autant chez les producteurs que chez les distributeurs. Par conséquent, analyser le pouvoir de marché est devenu primordial. La mesure du pouvoir de marché nécessite l'analyse...

This paper aims to provide a consistent empirical methodology for investigating the level of Minimum Efficient Scale (MES) in a single product industry, through the assessment of relative productive performance. Two deterministic approaches are used to evaluate firm-level technical efficiency :...

This paper analyzes the demand and cost structure of the french market of academic journals, taking into account its intermediary role between researchers, who are both producers and consumers of knowledge. This two sidedness feature will echoes similar problems already observed in electronic...

The farming profession, as some other professions, is confronted with a crisis of confidence (food scares, environmental concerns...). This present professional crisis corresponds both with an external challenge expressed by the social and public demands and an internal trend of competencies...

Private labels (or own-brand products) play a prominent role for consumers in their perception of retailers' reputation. In a model where products are experience goods, a retailer has the opportunity to introduce his own store brand, or to sell a branded product. However, the retailer does only...

The EU dairy sector is facing a period of significant changes that are due to three major decisions : the EU enlargement, le Luxembourg reform and on-going WTO negotiations. To evaluate the impact of such changes we developed a model of the EU and world dairy industry. The model is composed of...

We propose a structural empirical approach à la Levinsohn and Petrin (2003) to disentangle the effect of experts' grades from the effect of unobserved quality on the pricing of experience goods. Using a panel data set of 108 châteaux selling wine on the Bordeaux "en primeur" market, we provide...

Dans une première partie, l'auteur rappelle brièvement les principes de la certification ISO 14001. La Fédération Nationale des Coopératives d'Utilisation de matériel Agricole (FNCUMA) est engagée depuis 1998 dans une expérimentation visant à adapter la procédure de certification à la...

Bottled water consumption has been steadily growing in the world for the past 30 years, in spite of its excessively high price compared to tap water. The Italian drink more bottled water than anybody else in the world, followed by the French who drink about 130 liters per year per inhabitant. In...

Sharecropping theory generally does not take into account land fertility. We develop a repeated Principal-Agent model under moral hazard where the Principal delegates the use and maintenance of a productive asset. In a multitask framework, we characterize the optimal spot contract focusing on...