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Browsing MIT Open Access Articles by Title

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  • Chandrasekaran, Venkat; Parrilo, Pablo A.; Willsky, Alan S. (Society for Industrial and Applied Mathematics, 2012-08)
    The structural properties of graphs are usually characterized in terms of invariants, which are functions of graphs that do not depend on the labeling of the nodes. In this paper we study convex graph invariants, which are ...
  • Taylor, Joshua A.; Hover, Franz S. (Institute of Electrical and Electronics Engineers (IEEE), 2012-08)
    We derive new mixed-integer quadratic, quadratically constrained, and second-order cone programming models of distribution system reconfiguration, which are to date the first formulations of the ac problem that have convex, ...
  • Tobenkin, Mark M.; Manchester, Ian R.; Wang, Jennifer; Megretski, Alexandre; Tedrake, Russell Louis (Institute of Electrical and Electronics Engineers (IEEE), 2010-12)
    A new framework for nonlinear system identification is presented in terms of optimal fitting of stable nonlinear state space equations to input/output/state data, with a performance objective defined as a measure of ...
  • Majumdar, Anirudha; Vasudevan, Ram; Tobenkin, Mark M.; Tedrake, Russell Louis (2013-06)
    In this paper, we present an approach for designing feedback controllers for polynomial systems that maximize the size of the time-limited backwards reachable set (BRS). We rely on the notion of occupation measures to pose ...
  • DuHadway, Charles; Rosen, David Matthew; Leonard, John J (Institute of Electrical and Electronics Engineers (IEEE), 2015-07)
    Modern approaches to simultaneous localization and mapping (SLAM) formulate the inference problem as a high-dimensional but sparse nonconvex M-estimation, and then apply general first- or second-order smooth optimization ...
  • Slavov, Nikolai; Malioutov, Dmitry M. (Association for Computing Machinery (ACM), 2014-06)
    We study the total least squares (TLS) problem that generalizes least squares regression by allowing measurement errors in both dependent and independent variables. TLS is widely used in applied fields including computer ...
  • Turaga, Srinivas C.; Murray, Joseph F.; Jain, Viren; Roth, Fabian; Helmstaedter, Moritz N.; Briggman, Kevin L.; Denk, Winfried; Seung, H. Sebastian (MIT Press, 2010-01)
    Many image segmentation algorithms first generate an affinity graph and then partition it. We present a machine learning approach to computing an affinity graph using a convolutional network (CN) trained using ground truth ...
  • Wang, Yana; Irvine, Darrell J. (Royal Society of Chemistry, 2013)
    Chemoattractants regulate diverse immunological, developmental, and pathological processes, but how cell migration patterns are shaped by attractant production in tissues remains incompletely understood. Using computational ...
  • Khovanova, Tanya (Springer-Verlag, 2013-12)
    I present and discuss a puzzle about wizards invented by John H. Conway. This column is a place for those bits of contagious mathematics that travel from person to person in the community, because they are so elegant, ...
  • Lin, Henry W.; Benson, Bradford A.; McDonald, Michael A.; Miller, Eric D. (IOP Publishing, 2015-03)
    Sunyaev–Zel'dovich (SZ) surveys find massive clusters of galaxies by measuring the inverse Compton scattering of cosmic microwave background off of intra-cluster gas. The cluster selection function from such surveys is ...
  • Boyle, Edward A (American Geophysical Union (AGU), 1997-02)
    The discrepancy between central Greenland borehole temperatures and the isotopic composition of Last Glacial Maximum ice can be explained by a shift in the δ[superscript 18]O-T relationship for the hydrological cycle linked ...
  • Di Modugno, Francesca; Mottolese, Marcella; DeMonte, Lucia; Trono, Paola; Terrenato, Irene; Belleudi, Francesca; Torrisi, Maria Rosaria; Alessio, Massimo; Santoni, Angela; Nistico, Paola (Public Library of Science, 2010-12)
    hMena and the epithelial specific isoform hMena11a are actin cytoskeleton regulatory proteins belonging to the Ena/VASP family. EGF treatment of breast cancer cell lines upregulates hMena/hMena11a expression and phosphorylates ...
  • Ambrus, Attila; Pathak, Parag (Elsevier B.V., 2010-09)
    This paper shows that the presence of different types of players { those who only care about their own material payoffs and those who reciprocate others' contributions { can explain the robust features of observed ...
  • Schmidt, Henrik; Pastore, Thomas; Benjamin, Michael; Schneider, Toby Edwin (Institute of Electrical and Electronics Engineers (IEEE), 2010-05)
    Autonomous surface and underwater vehicles present a safe and low-cost solution for various contact investigation tasks, such as harbor surveillance for potentially threatening small craft or submarines. Since such a task ...
  • Fallon, Maurice Francis; Papadopoulos, Georgios; Leonard, John Joseph; Patrikalakis, Nicholas M. (Sage Publications, 2010-08)
    In this paper we describe the experimental implementation of an online algorithm for cooperative localization of submerged autonomous underwater vehicles (AUVs) supported by an autonomous surface craft. Maintaining accurate ...
  • Chitre, Mandar; Tan, Yew Teck; Hover, Franz S (Springer US, 2015-10)
    We present a cooperative bathymetry-based localization approach for a team of low-cost autonomous underwater vehicles (AUVs), each equipped only with a single-beam altimeter, a depth sensor and an acoustic modem. The ...
  • Hafner, Michael R.; Cunningham, Drew; Caminiti, Lorenzo; Del Vecchio, Domitilla (Institute of Electrical and Electronics Engineers (IEEE), 2013-08)
    In this paper, we leverage vehicle-to-vehicle (V2V) communication technology to implement computationally efficient decentralized algorithms for two-vehicle cooperative collision avoidance at intersections. Our algorithms ...
  • Ackerman, Joshua; Kenrick, Douglas T. (Sage Publications, 2009-10)
    Do people help each other form romantic relationships? Research on the role of the social environment in relationship formation has traditionally focused on competition, but this article investigates novel patterns of ...
  • Qin, Zhao; Buehler, Markus J. (American Physical Society, 2010-12)
    Beta-sheet protein domains are stabilized by weak hydrogen bonds, yet materials such as silk—whose ultimate tensile strength is controlled primarily by this secondary structure—can exceed the ultimate tensile strength of ...
  • Bahr, Alexander; Leonard, John Joseph; Fallon, Maurice Francis (Sage Publications, 2009-06)
    This paper describes an algorithm for distributed acoustic navigation for Autonomous Underwater Vehicles (AUVs). Whereas typical AUV navigation systems utilize pre-calibrated arrays of static transponders, our work seeks ...
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