The multimedia information systems, in the context of a generalized communication, have to become an effective and relevant tool in the service of the social world. A first modelling of their conception as their realization looked in the daytime to the method of territorial intelligence Catalyse. The hypothesis founder of this research is that it is possible to translate concretely the contribution of the Sciences of information and communication in the process of methodological and technological transfer necessary for the development of Catalyse observatories, by combining them in theories stemming from the other disciplines (didactics, cognitive psychology, sociology, geography...). From the statement of a situation where SIC seem practic...