Geographical proximity and analysis of the sectoral externalities in the French economy: Case study

A large number of work theoretical and empirical confirms the geographical dimension of externalities of the research development. However these works suffers from two major weaknesses. On the one hand, they are limited to the American case and generalize the results with other contexts (essentially european). On the other hand, in front of difficulties bound to the modeling, rare are works which includes in the same model the externalities and their geographical dimension. We exploited these gaps related to these two weaknesses works about it on a european country (France) while integrating in the same model the externalities of the research and development and their geographical dimension.