The Microsoft Research-CNRS chair ``Optimization for Sustainable Development'' (http://chaire-osd.polytechnique.fr/) at LIX, Ecole Polytechnique (near Paris, France) is inviting applications for two postdoctoral positions in the field of Operations Research applied to Sustainable Development applications. Research at the OSD Chair focuses on the use of optimization techniques to applications in sustainable development, including transportation, scheduling and energy-related topics. Methodology-wise, we pursue interests in: multi-objective optimization, stochastic programming, combinatorial optimization, nonlinear and mixed-integer programming. Current projects carried out by Chair members focus on: - green VRP - multi-modal shortest paths in dynamic road networks - multi-objective shortest paths - solution algorithms for mixed-integer nonlinear programming - graph theory and combinatorial optimization Applicants must hold a Ph.D. in an optimization related field, and have an interest in applications to sustainable development. Applications should include: - a motivation letter - a detailed CV (including a complete list of publications) - two reference letters - a research statement detailing the proposed research field Application material should be sent to Leo Liberti (leoliberti@gmail.com) and carry "OSD chair postdoc" in the subject field. The deadline for applications is **** July 15, 2010 ****, with a view to start around October 2010. One of the two positions concerns the Multiobjective Optimization project described below. The other position is open (preferably within one of the research subjects listed above). Multiobjective optimization (MOO) problems with preferences are MOO problems plus preferences over the objectives. Therefore preferences act as a filter and select the "preferred" solutions among Pareto-optimal ones. Preferences can be incorporated in MOO at different levels: before resolution, during the search process or after the resolution process. On the other hand, representing and reasoning about/with preferences have been extensively developed in Artificial Intelligence over the past decade resulting in robust and successful languages for preferences representation. The aim of this project is to integrate these languages into MOO problems. Applicants to the "MOO&Preferences" project should specify their preference *clearly* in their application. Limited to the MOO applicants, knowledge of theory of preferences, multicriteria optimization, stochastic programming is a plus. Applications specific to the MOO project should be sent to Souhila Kaci (kaci@cril.fr). The deadline for applications is **** July 15, 2010 ****, with a view to start around October 2010.