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Browsing MIT Open Access Articles by Title

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  • Tedrake, Russell Louis (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    We present an algorithm that probabilistically covers a bounded region of the state space of a nonlinear system with a sparse tree of feedback stabilized trajectories leading to a goal state. The generated tree serves as ...
  • Gray, Weston L.; Kirtley, James L., Jr.; Chalfant, Julie; Chryssostomidis, Chryssostomos (American Chemical Society (ACS), 2011)
    The design of electric ships requires a tool to evaluate the relative merits of different electrical power distribution configurations; the MIT end-to-end simulator [1] is just such a tool. This paper models one module to ...
  • Barton, T. J.; Field, David M.; Lang, Kevin M.; Chen, C. (American Physical Society, 2012-12)
    Self-consistent particle-in-cell simulations are performed to verify earlier theoretical predictions of adiabatic thermal beams in a periodic solenoidal magnetic focusing field [ K. R. Samokhvalova, J. Zhou and C. Chen ...
  • Doyle, Patrick S.; Trahan, Daniel Warner (American Institute of Physics, 2009-01)
    Recently our group has reported experiments using an obstacle array to precondition the conformations of DNA molecules to facilitate their stretch in a microcontraction. Based upon previous successes simulating electrophoretic ...
  • Dunn, Travis Patrick; Sussman, Joseph M. (Transportation Research Board of the National Academies, 2012-01)
    Decision-making processes for investment in transportation infrastructure and, ultimately, the investment decisions themselves are central to the performance of transportation systems. Perhaps equally important for performance ...
  • Kowalczyk, Timothy Daniel; Wang, Lee-Ping; Van Voorhis, Troy (American Chemical Society, 2011-09)
    Charge separation (CS) and charge recombination (CR) rates in photosynthetic architectures are difficult to control, yet their ratio can make or break photon-to-current conversion efficiencies. A rational design approach ...
  • Molina, Luisa Tan; Li, Guohui; Lei, Wenfang; Zavala, M.; Tsimpidi, A. P.; Karydis, V. A.; Pandis, S. N.; Canagaratna, M. R. (European Geosciences Union, 2011-04)
    Organic aerosol concentrations are simulated using the WRF-CHEM model in Mexico City during the period from 24 to 29 March in association with the MILAGRO-2006 campaign. Two approaches are employed to predict the variation ...
  • del Alamo, Jesus A.; Villanueva, Anita A.; Hisaka, Takayuki; Sasaki, Hajime; Katoh, Takayuki; Kanaya, Ko; Yoshida, Naohito (Institute of Electronics, Information and Communication Engineers, 2010-04)
    In order to meet the demand for mass production of 77 GHz automotive radar systems, a low cost and high performance 38/77 GHz AlGaAs/InGaAs PHEMT MMIC transmit amplifier with a multiplier has been realized. The chip is ...
  • Ashlagi, Itai; Monderer, Dov; Tennenholtz, Moshe (Institute for Operations Research and the Management Sciences (INFORMS), 2011-02)
    We consider a model with two simultaneous VCG ad auctions A and B where each advertiser chooses to participate in a single ad auction. We prove the existence and uniqueness of a symmetric equilibrium in that model. Moreover, ...
  • Waldispuhl, Jerome; O'Donnell, Charles William; Will, Sebastian; Devadas, Srinivas; Backofen, Rolf; Berger, Bonnie (Springer Berlin Heidelberg, 2009-05)
    Accurate comparative analysis tools for low-homology proteins remains a difficult challenge in computational biology, especially sequence alignment and consensus folding problems. We presentpartiFold-Align, the first ...
  • Ching, Shinung; Kabamba, Pierre T.; Meerkov, Semyon M. (Institute of Electrical and Electronics Engineers (IEEE), 2010-01)
    The instrumentation, i.e., sensors and actuators, in feedback control systems often contain nonlinearities, such as saturation, deadzone, quantization, etc. Standard synthesis techniques, however, assume that the actuators ...
  • Purdon, Patrick Lee; Pierce, Eric T.; Bonmassar, Giorgio; Walsh, John; Harrell, P. Grace; Kwo, Jean; Deschler, Daniel; Barlow, Margaret; Merhar, Rebecca C.; Lamus Garcia Herreros, Camilo; Mullaly, Catherine M.; Maginnis, Sharon; Skoniecki, Debra; Higgins, Helen-Anne; Brown, Emery N. (John Wiley & Sons, Inc., 2009-03)
    It has been long appreciated that anesthetic drugs induce stereotyped changes in electroencephalogram (EEG), but the relationships between the EEG and underlying brain function remain poorly understood. Functional imaging ...
  • Sahai, Erik; Wyckoff, Jeffrey; Philippar, Ulrike; Segall, Jeffrey E; Gertler, Frank; Condeelis, John (BioMed Central Ltd, 2005-05)
    Background: The development of multiphoton laser scanning microscopy has greatly facilitated the imaging of living tissues. However, the use of genetically encoded fluorescent proteins to distinguish different cell types ...
  • Wong, Chew Hooi; Iskandar, Kartini Bte; Yadav, Sanjiv Kumar; Hirpara, Jayshree L.; Loh, Thomas; Pervaiz, Shazib (Public Library of Science, 2010-04)
    Background: Chemotherapy-induced reduction in tumor load is a function of apoptotic cell death, orchestrated by intracellular caspases. However, the effectiveness of these therapies is compromised by mutations affecting ...
  • Moore, David C.; Huang, Albert S.; Walter, Matthew R.; Olson, Edwin; Fletcher, Luke Sebastian; Leonard, John Joseph; Teller, Seth (Institute of Electrical and Electronics Engineers, 2009-07)
    Recent applications of robotics often demand two types of spatial awareness: 1) A fine-grained description of the robot's immediate surroundings for obstacle avoidance and planning, and 2) Knowledge of the robot's position ...
  • Adalsteinsson, Elfar; Zelinski, Adam C.; Goyal, Vivek K. (Society for Industrial and Applied Mathematics, 2010-01)
    A problem that arises in slice-selective magnetic resonance imaging (MRI) radio-frequency (RF) excitation pulse design is abstracted as a novel linear inverse problem with a simultaneous sparsity constraint. Multiple unknown ...
  • White, Anne E.; Schmitz, L.; Peebles, W. A.; Rhodes, T. L.; Carter, T. A.; McKee, G. R.; Shafer, M. W.; Staebler, G. M.; Burrell, K. H.; DeBoo, J. C.; Prater, R. (American Institute of Physics, 2010-02)
    New measurements show that long-wavelength (kθρs<0.5)[(k subscript theta p subscript s <o.5)] electron temperature fluctuations can play an important role in determining electron thermal transport in low-confinement mode ...
  • Kurs, Andre; Moffatt, Robert; Soljacic, Marin (American Institute of Physics (AIP), 2010-01)
    Electromagnetic resonators strongly coupled through their near-fields [ A. Karalis, J. D. Joannopoulos, and M. Soljačić, Ann. Phys. 323, 34 (2008) ; A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher, and M. ...
  • Oppenheim, Alan V. (Institute of Electrical and Electronics Engineers (IEEE), 2011-06)
    It is well known that a bandlimited signal can be uniquely recovered from nonuniformly spaced samples under certain conditions on the nonuniform grid and provided that the average sampling rate meets or exceeds the Nyquist ...
  • Dunn, Robert B.; Quatieri, Thomas F.; Malyska, Nicolas (Institute of Electrical and Electronics Engineers, 2009-12)
    Sinewave analysis/synthesis has long been an important tool for audio analysis, modification and synthesis. The recently introduced fan-chirp Transform (FChT) [2,3] has been shown to improve the fidelity of sinewave parameter ...
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