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Browsing MIT Open Access Articles by Title

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  • Johnson, Daniel W; Schmidt, Ulrich H; Bittner, Edward A; Christensen, Benjamin; Levi, Retsef; Pino, Richard M (BioMed Central Ltd, 2013-07)
    Introduction: A paucity of literature exists regarding delays in transfer out of the intensive care unit. We sought to analyze the incidence, causes, and costs of delayed transfer from a surgical intensive care unit ...
  • Kochman, Yuval; Wornell, Gregory W.; Yao, Huan (Institute of Electrical and Electronics Engineers (IEEE), 2011-01)
    We focus on the problem of real-time streaming over a blockage channel with long feedback delay, as arises in real-time satellite communication from a comm-on-the-move (COTM) terminal. For this problem, we introduce a ...
  • Naous, Jad; Stutsman, Ryan; Mazieres, David; McKeown, Nick; Zeldovich, Nickolai (Association for Computing Machinery, 2009-08)
    Network security is gravitating towards more centralized control. Strong centralization places a heavy burden on the administrator who has to manage complex security policies and be able to adapt to users' requests. To be ...
  • Gao, Qing; Steine, Eveline J.; Barrasa, M. Inmaculada; Hockemeyer, Dirk; Pawlak, Mathias; Fu, Dongdong; Reddy, Seshamma; Bell, George W.; Jaenisch, Rudolf (National Academy of Sciences, 2011-10)
    Alterations in DNA methylation have been associated with genome-wide hypomethylation and regional de novo methylation in numerous cancers. De novo methylation is mediated by the de novo methyltransferases Dnmt3a and 3b, ...
  • Sobolevsky, Stanislav; Szell, Michael; Campari, Riccardo; Smoreda, Zbigniew; Ratti, Carlo; Couronne, Thomas (Public Library of Science, 2013-12)
    Large-scale networks of human interaction, in particular country-wide telephone call networks, can be used to redraw geographical maps by applying algorithms of topological community detection. The geographic projections ...
  • Sollins, Karen R.; Sastry, Nishanth; Crowcroft, Jon (Institute of Electrical and Electronics Engineers, 2009-06)
    The recently proposed packet switched network paradigm takes advantage of human social contacts to opportunistically create data paths over time. Our goal is to examine the effect of the human contact process on data ...
  • Nugent, Helen M.; Ng, Yin-Shan; White, Desmond; Groothius, Adam; Kanner, Glenn; Edelman, Elazer R. (Elsevier, 2009-12)
    PURPOSE: High restenosis rates are a major limitation of peripheral interventions. Endothelial cells, grown within gelatin matrices and implanted onto the adventitia of injured vessels, inhibit stenosis in experimental ...
  • Alexandrou, C.; Korzec, T.; Koutsou, G.; Lorce, C.; Negele, John W.; Pascalutsa, V.; Tsapalis, A.; Vanderhaeghen, M. (American Physical Society, 2009-01)
    We develop techniques to calculate the four Δ electromagnetic form factors using lattice QCD, with particular emphasis on the subdominant electric quadrupole form factor that probes deformation of the Δ. Results are presented ...
  • Zhang, Juanjuan; Miklos-Thal, Jeanine (American Marketing Association, 2013-02)
    Savvy consumers attribute a product’s market performance to its intrinsic quality as well as the seller’s marketing push. The authors study how sellers should optimize their marketing decisions in response. They find that ...
  • Cheung, Alvin K.; Thiagarajan, Arvind; Madden, Samuel R. (Association for Computing Machinery (ACM), 2011-11)
    This demo will showcase LifeJoin, a system that collects raw sensor data from phones and laptop computers to generate interesting events. Given the raw sensor data, LifeJoin implements a number of activity recognition ...
  • Del Pozzo, Walter; Li, Tjonnie G. F.; Agathos, Michalis; Van Den Broeck, Chris; Vitale, Salvatore (American Physical Society, 2013-08)
    Fisher matrix and related studies have suggested that, with second-generation gravitational-wave detectors, it may be possible to infer the equation of state of neutron stars using tidal effects in a binary inspiral. Here, ...
  • Madsen, Miriam A.; el Kaliouby, Rana; Eckhardt, Micah Rye; Goodwin, Matthew; Hoque, Mohammed Ehasanul; Picard, Rosalind W. (Institute of Electrical and Electronics Engineers, 2009-12)
    Social communication in autism is significantly hindered by difficulties processing affective cues in realtime face-to-face interaction. The interactive Social-Emotional Toolkit (iSET) allows its users to record and annotate ...
  • Temkin, Richard J.; Sirigiri, Jagadishwar R.; Joye, Colin D.; Shapiro, Michael (Institute of Electrical and Electronics Engineers, 2009-04)
    The theory, design, and experimental results of a wideband 140-GHz 1-kW pulsed gyro-traveling-wave amplifier (gyro-TWA) are presented. The gyro-TWA operates in the HE [subscript 06] mode of an overmoded quasi-optical ...
  • Liu, Dazhi; Hussey, D.; Gubarev, M. V.; Ramsey, B. D.; Jacobson, D.; Arif, M.; Moncton, David E.; Khaykovich, Boris (American Physical Society, 2013-05)
    An achromatic cold-neutron microscope with magnification 4 is demonstrated. The image-forming optics is composed of nested coaxial mirrors of full figures of revolution, so-called Wolter optics. The spatial resolution, ...
  • Chatterjee, Rohit; Yu, Mingbin; Stein, Aaron; Kwong, Dim-Lee; Kimerling, Lionel C.; Wong, Chee Wei (Optical Society of America, 2010-01)
    We demonstrate an optical hitless bypass switch based on nanomechanical proximity perturbation for high-bitrate transparent networks. Embedded in a single-level π-imbalanced Mach-Zehnder interferometer, the two ...
  • Ohia, Obioma O.; Egedal, J.; Lukin, V. S.; Daughton, W. (American Physical Society, 2012-09)
    Collisionless magnetic reconnection in high-temperature plasmas has been widely studied through fluid-based models. Here, we present results of fluid simulation implementing new equations of state for guide-field reconnection. ...
  • Liu, Dazhi; Khaykovich, Boris; Gubarev, Mikhail V.; Lee Robertson, J.; Crow, Lowell; Ramsey, Brian D.; Moncton, David E. (Nature Publishing Group, 2013-09)
    Small-angle neutron scattering (SANS) is the most significant neutron technique in terms of impact on science and engineering. However, the basic design of SANS facilities has not changed since the technique’s inception ...
  • Chuang, Isaac L.; Wang, Shannon Xuanyue; Labaziewicz, Jaroslaw; Ge, Yufei; Shewmon, Ruth (American Physical Society, 2010-06)
    We demonstrate quantum control techniques for a single trapped ion in a cryogenic, surface-electrode trap. A narrow optical transition of Sr[superscript +] along with the ground and first excited motional states of the ...
  • Leibrandt, David R.; Labaziewicz, Jaroslaw; Clark, Robert J.; Chuang, Isaac; Edpstein, R. J.; Ospelkaus, C.; Wesenberg, J. H.; Bollinger, J. J.; Leibfried, D.; Wineland, D. J.; Stick, D.; Sterk, J.; Monroe, C.; Pai, C.-S.; Low, Y.; Frahm, R.; Slusher, R. E. (Rinton Press, 2009-11)
    A scalable, multiplexed ion trap for quantum information processing is fabricated and tested. The trap design and fabrication process are optimized for scalability to small trap size and large numbers of interconnected ...
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