[eng] For the vast majority of professional economists, it is quite natural to think of the elasticity of supply with respect to price as being positive. The same idea is a matter of controversis among agricultural economists. Often, it is alleged that the rationality is radically different for...

[eng] Markets, incomes, expectations : agricultural supply dynamics . In order to justify agricultural income support, current rhetoric insists on equity considerations. Yet, one does not see any reason to be more equitable with respect to farmers than to any other category. By contrast,...

[fre] Voici déjà quelques décennies que des modèles d'équilibre général sont utilisés comme des arguments en faveur de la libéralisation dans les instances internationales qui discutent du commerce, en particulier le commerce des denrées alimentaires. On peut cependant se demander si...

[fre] L'indice de "productivité globale" de Vincent est décrit, et utilisé pour mesurer la productivité des agricoles adhérentes au RICA (Réseau Comptable d'Information Agricole). Il ne semble pas y avoir eu de de productivité pour ces exploitations de 1 971 à 1 978, mais en raison de la...

[eng] Price volatility and protectionism are main features of the world sugar market The assumptions, results and limits of two models of the world sugar market are analyzed. Taking into account the consequences of price volatility on agents decision making may radically change expected results...