Historically the Noce team located its research activities in the field of CSCW (Computer-supported cooperative work) and TEL (Technology Enhanced Learning). Always active in this community, the team opened its research interests to the study of computer mediated interactions to a larger spectrum of use cases than only those attached to the learning domain (e.g. online and situated commerce, social networks, smart cities, etc). Thus, our main theme of research can be expressed by two scientific questions focusing on the computer mediated interactions and on the usages. First, how to model the users’ mediated (individual and collective) behavior from real activities? Then, how to adapt, in an acceptable manner, a computer service to the evolutions of the needs and the activity context of users?