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Browsing MIT Open Access Articles by Title

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  • Schulz, Andreas S.; Uhan, Nelson A. (INFORMS, 2011-02)
    We consider the problem of minimizing the weighted sum of completion times on a single machine subject to bipartite precedence constraints in which all minimal jobs have unit processing time and zero weight, and all maximal ...
  • Onak, Krzysztof; Ron, Dana; Rosen, Michal; Rubinfeld, Ronitt (Association for Computing Machinery (ACM), 2012)
    We give a nearly optimal sublinear-time algorithm for approximating the size of a minimum vertex cover in a graph G. The algorithm may query the degree deg(v) of any vertex v of its choice, and for each 1 ≤ i ≤ deg(v), it ...
  • Ghaemi, Pouyan; Wilczek, Frank (IOP Publishing, 2012-01)
    Vortices in the simplest superconducting state of graphene contain very-low-energy excitations whose existence is connected to an index theorem that applies strictly to an approximate form of the relevant Bogoliubov–de ...
  • Tan, Vincent Yan Fu; Johnson, Matthew James; Willsky, Alan S. (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    We consider recovering the salient feature subset for distinguishing between two probability models from i.i.d. samples. Identifying the salient set improves discrimination performance and reduces complexity. The focus in ...
  • Fletcher, Alyson K.; Goyal, Vivek K.; Rangan, Sundeep (Institute of Electrical and Electronics Engineers, 2009-11)
    he paper considers the problem of detecting the sparsity pattern of a k -sparse vector in BBR n from m random noisy measurements. A new necessary condition on the number of measurements for asymptotically reliable detection ...
  • Stepp, Cara E.; Heaton, James T.; Rolland, Rebecca G.; Hillman, Robert E. (Institute of Electrical and Electronics Engineers, 2009-04)
    The electrolarynx (EL) is a common rehabilitative speech aid for individuals who have undergone total laryngectomy, but they typically lack pitch control and require the exclusive use of one hand. The viability of using ...
  • Chen, Yuzhi; Neve, Rachael L.; Liu, Helena (John Wiley & Sons, Inc, 2012-11)
    Ubiquitin-dependent proteolysis is a major mechanism that downregulates misfolded proteins or those that have finished a programmed task. In the last two decades, neddylation has emerged as a major regulatory pathway for ...
  • Leveson, Nancy G. (Springer-Verlag, 2009-02)
    The world and technology are changing, but these changes are not reflected in our safety engineering approaches. Many of the underlying assumptions of the traditional techniques no longer hold for the complex, high-tech ...
  • Gibson, Edward A.; Fedorenko, Evelina G. (Taylor & Francis Group, 2010-10)
    The prevalent method in syntax and semantics research involves obtaining a judgement of the acceptability of a sentence/meaning pair, typically by just the author of the paper, sometimes with feedback from colleagues. This ...
  • Aaronson, Scott; Ambainis, Andris (Electronic Colloquium on Computational Complexity, 2009-01)
    Is there a general theorem that tells us when we can hope for exponential speedups from quantum algorithms, and when we cannot? In this paper, we make two advances toward such a theorem, in the black-box model where most ...
  • Iatridou, Sabine; Zeijlstra, Hedde (MIT Press, 2013-10)
    Universal deontic modals may vary with respect to whether they scope over or under negation. For instance, English modals like must and should take wide scope with respect to negation; modals like have to and need to take ...
  • Iatridou, Sabine; Sichel, Ivy (MIT Press, 2011-10)
    Lasnik (1999) has claimed that NegDPs in derived subject position cannot be interpreted in the embedded clause and do not undergo A-chain reconstruction. We show that with a well-defined set of predicates, including deontic ...
  • Xu, Shangzhe; Krieger, Monty; Nieland, Thomas J.; Penman, Marsha L. (American Chemical Society (ACS), 2011-01)
    Scavenger receptor class B, type I (SR-BI), is a high-density lipoprotein (HDL) receptor, which also binds low-density lipoprotein (LDL), and mediates the cellular selective uptake of cholesteryl esters from lipoproteins. ...
  • Bramhavar, Suraj; Prada, Claire; Maznev, Alexei; Every, Arthur G.; Norris, Theodore B.; Murray, Todd W. (American Physical Society, 2011-01)
    We study negative refraction and focusing of elastic waves in a simple mechanical system comprised of a freestanding plate with a step change in thickness. A point-focused and intensity-modulated laser source is used to ...
  • Libova, Irina; Bear, James E.; Loureiro, Joseph J.; Gertler, Frank; Fassler, Reinhard; Wehland, Jurgen (Elsevier, 2000-06)
    Ena/VASP proteins have been implicated in cell motility through regulation of the actin cytoskeleton and are found at focal adhesions and the leading edge. Using overexpression, loss-of-function, and inhibitory approaches, ...
  • Han, Chong; Buchwald, Stephen Leffler (American Chemical Society (ACS), 2009-05)
    An efficient palladium-catalyzed process has been developed for Negishi coupling of secondary alkylzinc halides with a wide range of aryl bromides and activated aryl chlorides. A palladium catalyst composed of a new ...
  • Mizala, Alejandra; Schneider, Ben Ross (John Wiley & Sons, Inc, 2014-01)
    Reforms designed to improve the quality of teaching by reforming personnel practices, such as pay for performance arrangements, usually run into opposition from well-organized teacher unions that can either block reform ...
  • Benmelech, Efraim; Bergman, Nittai; Enriquez, Ricardo J. (Oxford University Press on behalf of The Society for Financial Studies, 2012-02)
    We analyze how firms renegotiate labor contracts to extract concessions from labor. While anecdotal evidence suggests that firms tend to renegotiate wages downward in times of financial distress, there is no empirical ...
  • Viqar, Saira; Welch, Jennifer L.; Cornejo Collado, Alex; Lynch, Nancy Ann (Institute of Electrical and Electronics Engineers, 2010-01)
    We explore the problem of neighbor discovery in a mobile ad hoc network environment. We describe a protocol for learning about neighboring nodes in such an environment. The protocol is used for establishing and tearing ...
  • Shen, Yuan; Luo, Tao; Win, Moe Z. (Institute of Electrical and Electronics Engineers, 2010-07)
    Long term evolution (LTE) is envisioned to be a key technology for the 4G wireless communication. In LTE systems, each user (UE) detects the surrounding base stations by searching the primary and secondary synchronization ...
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