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Browsing MIT Open Access Articles by Title

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  • Mittal, Shashi; Schulz, Andreas S. (Springer-Verlag, 2012-01)
    We present a fully polynomial time approximation scheme (FPTAS) for optimizing a very general class of non-linear functions of low rank over a polytope. Our approximation scheme relies on constructing an approximate ...
  • Wu, Guo-Qiang; Ding, Guang-Hong; Li, Cheng; Poon, Chi-Sang (Institute of Electrical and Electronics Engineers, 2009-11)
    A wide variety of methods based on fractal, entropic or chaotic approaches have been applied to the analysis of complex physiological time series. In this paper, we show that fractal and entropy measures are poor indicators ...
  • Mirny, Leonid A. (Springer-Verlag, 2011-01)
    The fractal globule is a compact polymer state that emerges during polymer condensation as a result of topological constraints which prevent one region of the chain from passing across another one. This long-lived intermediate ...
  • Stojanovic, Vladimir Marko; Song, Sanquan; Kim, Byungsub (Institute of Electrical and Electronics Engineers, 2009-08)
    Based on voltage-to-time conversion technique, a pseudo-differential two-way-interleaved adaptive linear receive equalizer with two 2x-oversampled feed-forward taps has been designed in a 90 nm CMOS process. It integrates ...
  • Levitov, Leonid; Abanin, Dmitry A.; Skachko, I.; Du, X.; Andrei, E. Y. (American Physical Society, 2010-03)
    Recently, fractional-quantized Hall effect was observed in suspended graphene (SG), a free-standing monolayer of carbon, where it was found to persist up to T=10 K. The best results in those experiments were obtained on ...
  • Sim, Min Sub; Wang, David T.; Zane, Grant M.; Wall, Judy D.; Bosak, Tanja; Ono, Shuhei (Frontiers Research Foundation, 2013-06)
    The sulfur isotope effect produced by sulfate reducing microbes is commonly used to trace biogeochemical cycles of sulfur and carbon in aquatic and sedimentary environments. To test the contribution of intracellular coupling ...
  • Bakku, Sudhish Kumar; Fehler, Michael; Burns, Daniel R. (Society of Exploration Geophysicists, 2013-06)
    We tested two models, one for tube-wave generation and the other for tube-wave attenuation at a fracture intersecting a borehole that can be used to estimate fracture compliance, fracture aperture, and lateral extent. In ...
  • Yao, Haimin; Xie, Zhaoqian; He, Chong; Dao, Ming (Nature Publishing Group, 2015-01)
    The excellent mechanical properties of natural biomaterials have attracted intense attention from researchers with focus on the strengthening and toughening mechanisms. Nevertheless, no material is unconquerable under ...
  • Sidorov, Michael Samuel; Auerbach, Benjamin David; Bear, Mark (BioMed Central Ltd, 2013-04)
    Loss of the translational repressor FMRP causes Fragile X syndrome. In healthy neurons, FMRP modulates the local translation of numerous synaptic proteins. Synthesis of these proteins is required for the maintenance and ...
  • Procura, Massimiliano; Stewart, Iain (American Institute of Physics, 2010-08)
    Using Soft‐Collinear Effective Theory (SCET) we derive factorization formulae for semi‐inclusive processes where a light hadron h fragments from a jet whose invariant mass is measured. Our analysis yields a novel “fragmenting ...
  • Ho, Stephen S.; Sarma, Sanjay Emani (Institute of Electrical and Electronics Engineers, 2009-09)
    Warehouse operations typically aggregate identical stock keeping units (SKU) into the same storage bin for easier bookkeeping and organizing of goods. With the emergence of automatic identification and tracking technologies ...
  • Nguyen, Ha Q.; Goyal, Vivek K.; Varshney, Lav Raj (Institute of Electrical and Electronics Engineers, 2010-03)
    Frame permutation quantization (FPQ) is a new vector quantization technique using finite frames. In FPQ, a vector is encoded using a permutation source code to quantize its frame expansion. This means that the encoding is ...
  • Das, Dipanjan; Chen, Desai; Martins, André F. T.; Schneider, Nathan; Smith, Noah A. (MIT Press, 2014-03)
    Frame semantics is a linguistic theory that has been instantiated for English in the FrameNet lexicon. We solve the problem of frame-semantic parsing using a two-stage statistical model that takes lexical targets (i.e., ...
  • Yoshida, Beni; Chuang, Isaac L. (American Physical Society, 2010-05)
    Entanglement, as studied in quantum information science, and nonlocal quantum correlations, as studied in condensed matter physics, are fundamentally akin to each other. However, their relationship is often hard to quantify ...
  • Friedman, Jonathan; Smillie, Chris Scott; Alm, Eric J. (Nature Publishing Group, 2012-06)
    A variety of microbial communities and their genes (the microbiome) exist throughout the human body, with fundamental roles in human health and disease. The National Institutes of Health (NIH)-funded Human Microbiome Project ...
  • Rogers, Leslie Anne; Seager, Sara (Institute of Physics Publishing, 2010-04)
    Several transiting super-Earths are expected to be discovered in the coming few years. While tools to model the interior structure of transiting planets exist, inferences about the composition are fraught with ambiguities. ...
  • Woon, Wei Lee; Henschel, Andreas; Madnick, Stuart E. (Institute of Electrical and Electronics Engineers (IEEE), 2010-04)
    This paper presents a novel framework for supporting the development of well-informed research policies and plans. The proposed methodology is based on the use of bibliometrics; i.e., analysis is conducted using information ...
  • Madnick, Stuart E.; Moulton, Allen; Siegel, Michael D.; Sabbouh, Marwan; Zhu, Hongwei; Gannon, Thomas (Institute of Electrical and Electronics Engineers, 2009-01)
    Technological advances such as Service Oriented Architecture (SOA) have increased the feasibility and importance of effectively integrating information from an ever widening number of systems within and across enterprises. ...
  • Albin, Pierre; Melrose, Richard B. (Clay Mathematics Institute, 2010-01)
    We consider two calculi of pseudodifferential operators on manifolds with fibered boundary: Mazzeo’s edge calculus, which has as local model the operators associated to products of closed manifolds with asymptotically ...
  • Paradiso, Joseph; Zoran, Amit Shlomo; Paradiso, Joseph A. (Association for Computing Machinery (ACM), 2012-10)
    We present an approach to combine digital fabrication and craft that is focused on a new fabrication experience. The FreeD is a hand-held, digitally controlled, milling device. It is guided and monitored by a computer while ...
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