An approach through the complexity of the collaborative process of design, integration and realization:a transactional model of the interface actor and dynamics of exchange spacesAbstractIn large projects such as particle accelerators or detectors, interfaces and boundaries revealthemselves to be both critical and underestimated. The technical manager, an actor among others,finds himself placed at network nodes where he must set up exchanges spaces in order to generatecollaborative behaviours. Starting with case studies from the field of CERN, the thesis follows threeprinciples based on the dialogical, the hologramic and the self-eco-organization principles, asexpanded in the writings on complexity. It puts forward an original methodological matrix constructionleading to a transactional model of the interface actor.The collaborative exchanges spaces builds itself as a place for the dynamic transformation of theinterface actor into a boundary actor. Intermediate objects, created during the design / integrationprocess, are simultaneously transformed into boundary objects. They are instrumental in therealization of the product: this takes place in the framework of the project which has been determinedthrough a recursive process. The interest generated by such a global and combined approach of thisdynamic process leads to the proposal of a “hypercompass”, with the aim of providing the means forthe technical manager to orient his “acting ↔thinking”.
