Local governments are changing. The state is withdrawing more and more, with maturities listed, and in fact local elected confined so far to sovereign functions, are forced to change with new skills to manage multiple, pointed, with high responsibility and implications. The Elected Representatives of the 21st century is forced to stay, to act as an entrepreneur, and therefore, to surround themselves with new skills, strategic and multifocal spectrum to assist, counsel, the orient, offer alternatives to fulfill the scope of its missions. Sustainable development, renewable energy, energy expenditure control, timing of Grenelle, housing compliance of municipal buildings, are all issues for the mayor, which forces him yet he can not take specific expertise. For this, two alternatives open to him: - Outsourcing this expertise on the outside, with their advantages (cost to the Mission with final additional cost, flexibility) and constraints (lack of responsiveness, little or no global vision ) - In-house, with the creation of clusters or dedicated Directions, with local experts, near, cheapest, drowned in an operating budget and above all flexible. The engineer, therefore can be achieved in his profession, in Local Authorities, as well as engage in private, to use his ingenuity, skill, strength of proposal, its day to facilitate the visibility to the Mayor in choices at different stages of completion of a project commissioned by him and allow him to make the right decision in keeping with its election commitments. This context, briefly described, sets the basic question of my research, namely, what are the scientific tools and techniques best suited to the request of local government decision makers. This implies an interest in the process of conducting operation since plans to build the rest of life works through their use in characterizing the stages of decision making and focusing in particular uncertainties that support the different stages of life and a book that will shape these decisions.
