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Browsing MIT Open Access Articles by Title

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  • Gustavsson, Simon; Zwier, Olger; Bylander, Jonas; Yan, Fei; Yoshihara, Fumiki; Nakamur, Yasunobu; Orlando, Terry Philip; Oliver, William D. (American Physical Society, 2013-01)
    We present a new method for determining pulse imperfections and improving the single-gate fidelity in a superconducting qubit. By applying consecutive positive and negative π pulses, we amplify the qubit evolution due to ...
  • Berwick, Robert C.; Malioutov, Igor Mikhailovich (Institute of Electrical and Electronics Engineers (IEEE), 2011-01)
    Statistically-based parsers for large corpora, in particular the Penn Tree Bank (PTB), typically have not used all the linguistic information encoded in the annotated trees on which they are trained. In particular, they ...
  • Johnson, Luke B.; Ponda, Sameera S.; Choi, Han-lim; How, Jonathan P. (American Institute of Aeronautics and Astronautics, 2010-08)
    This work presents a decentralized task allocation algorithm for networked agents communicating through an asynchronous channel. The algorithm extends the Consensus-Based Bundle Algorithm (CBBA) to account for more ...
  • How, Jonathan P.; Michini, Bernard J. (Institute of Electrical and Electronics Engineers (IEEE), 2012-05)
    Inverse reinforcement learning (IRL) is the task of learning the reward function of a Markov Decision Process (MDP) given knowledge of the transition function and a set of expert demonstrations. While many IRL algorithms ...
  • Ayanian, Nora; Sung, Cynthia Rueyi; Rus, Daniela L. (Institute of Electrical and Electronics Engineers (IEEE), 2013-05)
    We consider the problem of task assignment for a multi-robot system where each robot must attend to one or more queues of tasks. We assume that individual robots have no knowledge of tasks in the environment that are not ...
  • Lobez, Jose M.; Andrew, Trisha Lionel; Bulovic, Vladimir; Swager, Timothy Manning (American Chemical Society, 2012-02)
    The motivation of this study is to determine if small amounts of designer additives placed at the polymer–fullerene interface in bulk heterojunction (BHJ) solar cells can influence their performance. A series of AB-alternating ...
  • Sivalingam, Lenin Ravindranth; Newport, Calvin Charles; Balakrishnan, Hari; Madden, Samuel R. (USENIX Association, 2011-03)
    With the proliferation of mobile wireless devices such as smartphones and tablets that are used in a wide range of locations and movement conditions, it has become important for wireless protocols to adapt to different ...
  • Jadidian, Jouya; Zahn, Markus; Lavesson, Nils; Widlund, Ola; Borg, Karl (American Institute of Physics, 2012-05)
    Theoretical images of streamers, revealing the mechanisms behind impulse breakdown in liquid dielectrics, are presented. Streamers lead to electrical breakdown by forming paths, capable of carrying large current amplitudes ...
  • Littleton, J. Troy; Zhang, Sheng; Saraswati, Sudipta; Feany, Mel B.; Perrimon, Norbert (Company of Biologists, 2009-05)
    A polyglutamine expansion in the huntingtin (HTT) gene causes neurodegeneration in Huntington’s disease (HD), but the in vivo function of the native protein (Htt) is largely unknown. Numerous biochemical and in vitro studies ...
  • Lohman, Gregory J. S.; Gerfen, Gary J.; Stubbe, JoAnne (American Chemical Society (ACS), 2010-01)
    Ribonucleotide reductase (RNR, 76 kDa) from Lactobacillus leichmannii is a class II RNR that requires adenosylcobalamin (AdoCbl) as a cofactor. It catalyzes the conversion of nucleoside triphosphates to deoxynucleotides ...
  • Lohman, Gregory J. S.; Stubbe, JoAnne (American Chemical Society (ACS), 2010-02)
    Ribonucleotide reductase (RNR) from Lactobacillus leichmannii, a 76 kDa monomer using adenosylcobalamin (AdoCbl) as a cofactor, catalyzes the conversion of nucleoside triphosphates to deoxynucleotides and is rapidly (<30 ...
  • D’Souza, A. I.; Ionescu, A. C.; Salcido, M.; Robinson, E.; Dawson, L. C.; Okerlund, D. L.; de Lyon, T. J.; Rajavel, R. D.; Sharifi, H.; Yap, D.; Beliciu, M.L.; Mehta, S.; Dai, W.; Chen, Gang; Dhar, N.; Wijewarnasuriya, P. (SPIE--the International Society for Optical Engineering, 2011-05)
    The Photon-Trap Structures for Quantum Advanced Detectors (PT-SQUAD) program requires MWIR detectors at 200 K. One of the ambitious requirements is to obtain high (> 80 %) quantum efficiency over the visible to MWIR spectral ...
  • Allen, Peter M.; Liu, Wenhao; Chauhan, Vikash P.; Lee, Jungmin; Ting, Alice Y.; Fukumura, Dai; Jain, Rakesh K.; Bawendi, Moungi G. (American Chemical Society, 2009-12)
    We present the synthesis of InAs quantum dots (QDs) with a ZnCdS shell with bright and stable emission in the near-infrared (NIR, 700−900 nm) region for biological imaging applications. We demonstrate how NIR QDs can image ...
  • Santer, B. D.; Painter, J. F.; Mears, C. A.; Doutriaux, C.; Caldwell, P.; Arblaster, J. M.; Cameron-Smith, P. J.; Gillett, N. P.; Gleckler, P. J.; Lanzante, J.; Perlwitz, J.; Stott, P. A.; Taylor, K. E.; Terray, L.; Thorne, P. W.; Wehner, M. F.; Wentz, F. J.; Wigley, T. M. L.; Wilcox, L. J.; Zou, C.-Z. (National Academy of Sciences (U.S.), 2012-11)
    We perform a multimodel detection and attribution study with climate model simulation output and satellite-based measurements of tropospheric and stratospheric temperature change. We use simulation output from 20 climate ...
  • Schiller, Peter H. (National Academy of Sciences (U.S.), 2010-08)
    In the retina, several parallel channels originate that extract different attributes from the visual scene. This review describes how these channels arise and what their functions are. Following the introduction four ...
  • Loiseau, Patrick; Schwartz, Galina; Musacchio, John; Amin, Saurabh; Sastry, S. Shankar (Institute of Electrical and Electronics Engineers (IEEE), 2014-04)
    Mobile data traffic has been steadily rising in the past years. This has generated a significant interest in the deployment of incentive mechanisms to reduce peak-time congestion. Typically, the design of these mechanisms ...
  • Pierre, Azoulay; Graff Zivin, Joshua S.; Gustavo, Manso (Rand Corporation, 2011-09)
    Despite its presumed role as an engine of economic growth, we know surprisingly little about the drivers of scientific creativity. We exploit key differences across funding streams within the academic life sciences to ...
  • Angrist, Joshua; Lang, Daniel; Oreopoulos, Philip (American Economic Association, 2009-01)
    Many North American college students have trouble satisfying degree requirements in a timely manner. This paper reports on a randomized field experiment involving two strategies designed to improve academic performance ...
  • Kojima, Fuhito; Pathak, Parag (American Economic Association, 2009-06)
    A number of labor markets and student placement systems can be modeled as many-to-one matching markets. We analyze the scope for manipulation in many-to-one matching markets under the student-optimal stable mechanism when ...
  • Loiseau, Patrick; Schwartz, Galina; Musacchio, John; Amin, Saurabh (Institute of Electrical and Electronics Engineers (IEEE), 2012-01)
    The Internet is plagued with congestion problems of growing severity which are worst at peak periods. In this paper, we compare two schemes that incentivize users to shift part of their usage from the peak-time to the ...
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