Part 1: Knowledge Discovery and SharingInternational audienceThis paper puts forward several evolutions in methodological approaches to « project management». Firstly, it aims to bring closer the founding models of different engineering approachesincluding systems engineering and project management recommendations to allow fora greater continuity and enhanced management coherence,from beginning to end of the project. It focuses on operating a generic process, called DECWAYS, based on handling management requirements:(1)analyze the requirements to arrive at a complete inventory of the final product ;(2)associate with each one of these requirements ,an « indicator » setting a target objective for completion, supplemented by a risk function de...