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Browsing MIT Open Access Articles by Title

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  • Klein, Arno; Mensh, Brett; Ghosh, Satrajit; Tourville, Jason; Hirsch, Joy (BioMed Central Ltd, 2005-10)
    Background: To make inferences about brain structures or activity across multiple individuals, one first needs to determine the structural correspondences across their image data. We have recently developed Mindboggle as ...
  • Bewley, Kathryn D.; Firer‑Sherwood, Mackenzie A.; Mock, Jee‑Young; Ando, Nozomi; Drennan, Catherine L.; Elliott, Sean J.; Drennan, Catherine L. (Portland Press, 2012-12)
    Shewanella oneidensis MR-1 has the ability to use many external terminal electron acceptors during anaerobic respiration, such as DMSO. The pathway that facilitates this electron transfer includes the decahaem cytochrome ...
  • Muentener, Paul Jason; Bonawitz, Elizabeth; Horowitz, Alexandra; Schulz, Laura E. (Public Library of Science, 2012-04)
    Toddlers readily learn predictive relations between events (e.g., that event A predicts event B). However, they intervene on A to try to cause B only in a few contexts: When a dispositional agent initiates the event or ...
  • Grocholski, Brent; Catalli, Krystle C.; Shim, Sang-Heon; Prakapenka, Vitali (National Academy of Sciences, 2012-02)
    The discovery of a phase transition in Mg-silicate perovskite (Pv) to postperovskite (pPv) at lowermost mantle pressure-temperature (P - T) conditions may provide an explanation for the discontinuous increase in shear wave ...
  • Iida, Fumiya; Tedrake, Russell Louis (Institute of Electrical and Electronics Engineers, 2009-08)
    Although there has been an increasing interest in dynamic bipedal locomotion for significant improvement of energy efficiency and dexterity of mobile robots in the real world, their locomotion capabilities are still mostly ...
  • Iida, Fumiya; Tedrake, Russell Louis (Springer Netherlands, 2010-01)
    Toward our comprehensive understanding of legged locomotion in animals and machines, the compass gait model has been intensively studied for a systematic investigation of complex biped locomotion dynamics. While most of ...
  • Ballinger, Brad; Charlton, David; Demaine, Erik D.; Demaine, Martin L.; Iacono, John; Liu, Ching-Hao; Poon, Sheung-Hung (Springer Berlin / Heidelberg, 2009-07)
    Locked tree linkages have been known to exist in the plane since 1998, but it is still open whether they have a polynomial-time characterization. This paper examines the properties needed for planar trees to lock, with a ...
  • Wang, Liying; Zhang, Lihong; Liu, Zhangzhi; Zhao, Dehua; Liu, Xiaomeng; Zhang, Bo; Xie, Jianbo; Hong, Yuanyuan; Li, Pengfei; Chen, Sanfeng; Dixon, Ray; Li, Jilun (Public Library of Science, 2013-10)
    Most biological nitrogen fixation is catalyzed by molybdenum-dependent nitrogenase, an enzyme complex comprising two component proteins that contains three different metalloclusters. Diazotrophs contain a common core of ...
  • Forney, G. David, Jr. (Institute of Electrical and Electronics Engineers (IEEE), 2011-01)
    Given a discrete-time linear system C, a shortest basis for C is a set of linearly independent generators for C with the least possible lengths. A basis B is a shortest basis if and only if it has the predictable span ...
  • Wang, Qiqi; Moin, Parviz; Iaccarino, Gianluca (Society for Industrial and Applied Mathematics, 2009-06)
    Adjoint equations of differential equations have seen widespread applications in optimization, inverse problems, and uncertainty quantification. A major challenge in solving adjoint equations for time dependent systems has ...
  • Börgers, Christoph; LeBeau, Fiona E. N.; Boyden, Edward Stuart; Kopell, Nancy J.; Franzesi, Giovanni Talei (Public Library of Science, 2012-02)
    In networks of excitatory and inhibitory neurons with mutual synaptic coupling, specific drive to sub-ensembles of cells often leads to gamma-frequency (25–100 Hz) oscillations. When the number of driven cells is too small, ...
  • Minsley, Burke J.; Coles, Darrell A.; Vichabian, Yervant; Morgan, Frank Dale (Society of Exploration Geophysicists, 2008-03)
    Self-potential (SP) surveys often involve many interconnected lines of data along available roads or trails, with the ultimate goal of producing a unique map of electric potentials at each station relative to a single ...
  • Smith, Matthew William; Miller, David W. (SPIE, 2010-07)
    The trend in future space telescopes points toward increased primary mirror diameter, which improves resolution and sensitivity. However, given the constraints on mass and volume deliverable to orbit by current launch ...
  • Demaine, Erik D.; Hajiaghayi, Mohammad; Marx, Daniel (Springer Berlin / Heidelberg, 2009-09)
    We study an extensive class of movement minimization problems which arise from many practical scenarios but so far have little theoretical study. In general, these problems involve planning the coordinated motion of a ...
  • Demaine, Erik D.; Zadimoghaddam, Morteza (Springer, 2010)
    We study the problem of minimizing the diameter of a graph by adding k shortcut edges, for speeding up communication in an existing network design. We develop constant-factor approximation algorithms for different variations ...
  • Ciullo, Delia; Celik, Guner Dincer; Modiano, Eytan H. (Institute of Electrical and Electronics Engineers, 2010-05)
    Energy optimization is a significant component of Wireless Sensor Network (WSN) design. In this paper we consider transmission energy optimization in WSNs where messages are collected by a mobile receiver (collector). The ...
  • Huang, Shurui; Ramamoorthy, Aditya; Medard, Muriel (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    Consider a large file that needs to be multicast over a network to a given set of terminals. Storing the file at a single server may result in server overload. Accordingly, there are distributed storage solutions that ...
  • Medard, Muriel; Huang, Shurui; Ramamoorthy, Aditya (Institute of Electrical and Electronics Engineers (IEEE), 2011-02)
    Content distribution over networks is often achieved by using mirror sites that hold copies of files or portions thereof to avoid congestion and delay issues arising from excessive demands to a single location. Accordingly, ...
  • Polyanskiy, Yury; Poor, H. Vincent; Verdu, Sergio (Institute of Electrical and Electronics Engineers, 2011-08)
    The minimum achievable energy per bit over memoryless Gaussian channels has been previously addressed in the limit when the number of information bits goes to infinity, in which case it is known that the availability of ...
  • Zafer, Murtaza; Modiano, Eytan H. (Institute of Electrical and Electronics Engineers / IEEE Control Systems Society, 2009-11)
    We consider optimal rate-control for energy-efficient transmission of data, over a time-varying channel, with packet-deadline constraints. Specifically, the problem scenario consists of a wireless transmitter with B units ...
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