Scanned data was used to estimate US coffee demand using an AIDS model. The estimated elasticities have the expected …

, according to the returns and the risk level. Differentiation and costs were emphasized because they were the strategic options … maintaining the efforts related to differentiation and to the productivity was pointed out. …

extent by sociological differentiation theory. We suggest a typology of different types of fragmentation. Second …, differentiation theory helps to improve understanding of the different causes of fragmentation. Third, a high level of institutional … differentiation is an important characteristic of modernity at many levels of politics. It is not fragmentation per se, but rather the …

This paper aims at analysing territorial competition through a spatial differentiation model as Hotelling?s. So it … shows that an equilibrium can be found, but also that the famous « minimal differentiation » principle is far from being … verified. On the contrary, in matter of territorial competition, differentiation seems profitable and it does not necessarily …

they have got significant market shares. This is related to the weak differentiation of the new varieties which leads to …