of large scale, geographically correlated failures, on network survivability and design. In a related project, recently funded by the National Science Foundation, the group is studying survivability in layered networks; with the goal of preventing failures from propagating across layers. The group also started work on a new Army MURI (Multidisciplinary University Research Initiative) project titled “MAASCOM : Modeling, Analysis, and Algorithms for Stochastic Control of Multi-Scale Networks.” The project deals with control of communication networks at multiple time-scales; and is a collaboration among MIT, Ohio State University, University of Maryland, University of Illinois, Purdue University, and Cornell University. CNRG’s research crosses disciplinary boundaries by combining techniques from network optimization, queueing theory, graph theory, network protocols and algorithms, hardware design, and physical layer communications. Eytan Modiano directs the Communications and Networking Research Group. Visit the Communications and Networking Research Group at http://web.mit.edu/aeroastro/labs/cnrg/
Graduate student Dan Courtney explains the operation of a miniature Hall Thruster ion engine to Space Propulsion Lab visitors during the AeroAstro Department’s June Open House, held as part of the Giant Leaps Apollo anniversary observance.
COMPLEX SYSTEMS RESEARCH LABORATORY
Increasing complexity and coupling, as well as the introduction of new digital technology, are introducing new challenges for engineering, operations, and sustainment. The Complex Systems Research Lab designs system modeling, analysis, and visualization theory and tools to assist in the design and operation of safer systems with greater capability. To accomplish these goals, the lab applies a system’s approach to engineering that includes building technical foundations and knowledge and integrating these with the organizational, political, and cultural aspects of system construction and operation. While CSRL’s main emphasis is aerospace systems and applications, its research results are applicable to complex systems in such domains as transportation, energy, and health. Current research projects include accident
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