The School of Architecture, Princeton's center for teaching and research in architectural design, history, and theory, offers advanced degrees at both the master's and the doctoral levels. The curriculum for the master's degree, which has both a professional and a post-professional track, emphasizes design expertise in the context of architectural scholarship. Architecture is understood as a cultural practice involving both speculative intelligence and practical know-how. Each student constructs a personal course of study around a core of required courses that represents the knowledge essential to the education of an architect today. The five-year doctoral program focuses on the history, theory, and criticism of architecture, urbanism, landscape, and building technology. The approach is interdisciplinary, covering a broad range of research interests from an architectural perspective. Working closely with the faculty of the school and allied departments in the University, students build individual programs of study involving at least two years of course work, general examinations, and a dissertation. The technology Ph.D. track develops research in the field of embodied computation and new systems for energy and environmental performance. Through associated faculty it is linked to the School of Engineering and Applied Science, particularly with Computer Science and the Andlinger Center for Energy and the Environment. A proseminar for the Ph.D. track supports the initial methods and processes for this research. The applied research component of the track is supported by infrastructure including an industrial robotic arm located in the School of Architecture's Embodied Computation Lab and research facilities in the Andlinger Center.