The Structures group is focusing its efforts at the frontiers of structural engineering, across all application domains including civil, aerospace, biological, and mechanical. Specifically, the Structures group is now concentrating its considerable expertise in materials, computational and probabilistic mechanics, structural health monitoring, and high performance computing to model, analyze, simulate, and design complex systems that are characterized by multi-physics processes that transcend several time and length scales: from picoseconds to decades, from the atomic to the scale of an aircraft carrier. The group also seeks to establish a reciprocal relationship between experimentation and computing by utilizing physical experiments to observe behavior phenomena, to measure properties and mechanisms, and to validate computational models, and computational simulations to inform experimentation.<br>Students in the M.S. or Ph.D. program may select one area of concentration. Each student in the Ph.D. program must take a qualifying examination shortly after receiving the M.S. degree, or, if a student comes to Cornell with an M.S. degree, within nine months after arrival. Additional information on the M.S. and Ph.D. programs is available on request from the graduate field office. <br>Civil Infrastructure Systems aims to augment the traditional education in infrastructure engineering with additional perspectives and systems methods to address new challenges. These new challenges are: understanding how structures behave as a system of components and how individual structures behave together as an infrastructure system and understanding the technical aspects of infrastructure engineering within the social, economic, political and cultural context in which they exist. Further, consideration must be given to long-term maintenance, operation and destruction and uncertainties that affect infrastructure system design and analysis.