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Browsing MIT Open Access Articles by Title

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  • Rinnerbauer, Veronika; Senkevich, Jay; Joannopoulos, John D.; Soljacic, Marin; Celanovic, Ivan (American Vacuum Society (AVS), 2012-11)
    The authors study the use of thin ( ∼ 230 nm) tantalum (Ta) layers on silicon (Si) as a low emissivity (high reflectivity) coating for high-temperature Si devices. Such coatings are critical to reduce parasitic radiation ...
  • Fisher, Matthew; Tang, Evelyn May Yin; Lee, Patrick A. (American Physical Society, 2013-01)
    We calculate the electron spectral function for a spin liquid with a spinon Fermi surface and a Dirac spin liquid. Calculations are based upon the slave-rotor mean-field theory. We consider the effect of gauge fluctuations ...
  • Monroe, Jocelyn; Formaggio, Joseph A.; Miller, M. L.; Monreal, B.; Ott, Richard A.; Sonley, T. J. (American Physical Society, 2010-05)
    Results are reported from a joint analysis of Phase I and Phase II data from the Sudbury Neutrino Observatory. The effective electron kinetic energy threshold used is Teff=3.5 MeV, the lowest analysis threshold yet achieved ...
  • Choi, Sung-Soon; Jung, Kyomin; Moon, Byung-Ro (Institute of Electrical and Electronics Engineers, 2009-02)
    For a real-valued function f defined on {0,1}n , the linkage graph of f is a hypergraph that represents the interactions among the input variables with respect to f . In this paper, lower and upper bounds for the number ...
  • Tsitsiklis, John N.; Olshevsky, Alexander (Institute of Electrical and Electronics Engineers (IEEE), 2011-02)
    We derive lower bounds on the convergence speed of a widely used class of distributed averaging algorithms. In particular, we prove that any distributed averaging algorithm whose state consists of a single real number and ...
  • Colding, Tobias; Minicozzi, William (Springer-Verlag, 2011-03)
    We prove lower bounds for the Hausdorff measure of nodal sets of eigenfunctions.
  • Attiya, Hagit; Censor-Hillel, Keren (Society for Industrial and Applied Mathematics, 2010-12)
    This paper studies the inherent trade-off between termination probability and total step complexity of randomized consensus algorithms. It shows that for every integer $k$, the probability that an $f$-resilient randomized ...
  • Indyk, Piotr; Do Ba, Khanh; Price, Eric C.; Woodruff, David P. (Society for Industrial and Applied Mathematics, 2010-01)
    We consider the following k-sparse recovery problem: design an m x n matrix A, such that for any signal x, given Ax we can efficiently recover ^x satisfying x|| ^x||1 [less than or equal to] C min[subscript k]-sparse ...
  • Como, Giacomo; Dahleh, Munther A. (Institute of Electrical and Electronics Engineers, 2009-02)
    Information-theoretic lower bounds on the estimation error are derived for problems of distributed computation. These bounds hold for a network attempting to compute a real-vector-valued function of the global information, ...
  • Osqui, Mitra; Megretski, Alexandre; Roozbehani, Mardavij (Institute of Electrical and Electronics Engineers (IEEE), 2012-03)
    This paper deals with the task of finding certified lower bounds for the performance of Analog to Digital Converters (ADCs). A general ADC is modeled as a causal, discrete-time dynamical system with outputs taking values ...
  • Ozdaglar, Asuman E.; Acemoglu, Daron; Lobel, Inna; Dahleh, Munther A. (Institute of Electrical and Electronics Engineers, 2009-07)
    e study the rate of convergence of Bayesian learning in social networks. Each individual receives a signal about the underlying state of the world, observes a subset of past actions and chooses one of two possible actions. ...
  • Gasarch, William; Haeupler, Bernhard (Electronic Journal of Combinatorics, 2011-03)
    The van der Waerden number W(k,2) is the smallest integer n such that every 2-coloring of 1 to n has a monochromatic arithmetic progression of length k. The existence of such an n for any k is due to van der Waerden but ...
  • Harvey, R.W.; Meneghini, O.; Schmidt, A.E.; Smirnov, A.P.; Wilson, J.R.; Wallace, Gregory Marriner; Hubbard, Amanda E.; Bonoli, Paul T.; Faust, Ian Charles; Hughes, Jerry W.; Labombard, Brian; Parker, Ronald R.; Shiraiwa, Shunichi; Whyte, Dennis G.; Wright, John C.; Wukitch, Stephen James (IOP Publishing, 2011-07)
    Experimental observations of lower hybrid current drive (LHCD) at high density on the Alcator C-Mod tokamak are presented in this paper. Bremsstrahlung emission from relativistic fast electrons in the core plasma drops ...
  • Meneghini, O.; Lau, C.; Ma, Y.; Harvey, R. W.; Schmidt, A. E.; Smirnov, A. P.; Wilson, J. R.; Wallace, Gregory Marriner; Faust, Ian Charles; Parker, Ronald R.; Shiraiwa, Shunichi; Baek, Seung Gyou; Bonoli, Paul T.; Hubbard, Amanda E.; Hughes, Jerry W.; Labombard, Brian; Reinke, Matthew Logan; Terry, James L.; Whyte, Dennis G.; Wright, John C.; Wukitch, Stephen James (American Institute of Physics (AIP), 2012-06)
    Assessing the performance of lower hybrid current drive (LHCD) at high density is critical for developing non-inductive current drive systems on future steady-state experiments. Excellent LHCD efficiency has been observed ...
  • Goeke, Robert F.; Hewitt, Jacqueline N.; Morgan, Edward H.; Williams, Christopher Leigh (Institute of Physics/American Astronomical Society, 2014-08)
    We report on the detection of the millisecond pulsar PSR J0437–4715 with the Murchison Wide-field Array (MWA) at a frequency of 192 MHz. Our observations show rapid modulations of pulse intensity in time and frequency that ...
  • Frank, William B.; Shapiro, Nikolaï M.; Kostoglodov, Vladimir; Husker, Allen L.; Campillo, Michel; Payero, Juan S.; Prieto Gomez, German A. (American Geophysical Union, 2013-06)
    We use data from the Meso-America Subduction Experiment to detect and locate low-frequency earthquakes (LFEs) in the Mexican subduction zone. We use visually-identified templates to perform a network waveform correlation ...
  • Williams, Christopher Leigh; Hewitt, Jacqueline N.; Levine, Alan M. (IOP Publishing, 2012-07)
    The Murchison Widefield Array (MWA) is a new low-frequency, wide-field-of-view radio interferometer under development at the Murchison Radio-astronomy Observatory in Western Australia. We have used a 32 element MWA prototype ...
  • Cappallo, Roger J.; Corey, Brian E.; Goeke, Robert F.; Hewitt, Jacqueline N.; Kincaid, B. B.; Kratzenberg, E.; Lonsdale, Colin John; McWhirter, Stephen R.; Morgan, Edward H.; Remillard, Ronald Alan; Rogers, Alan E. E.; Salah, J. E.; Whitney, Alan R.; Williams, Christopher Leigh (IOP Publishing, 2012-12)
    A new generation of low-frequency radio telescopes is seeking to observe the redshifted 21 cm signal from the epoch of reionization (EoR), requiring innovative methods of calibration and imaging to overcome the difficulties ...
  • Altamirano, D.; Ingram, A.; van der Klis, M.; Wijnands, R.; Linares Alegret, Manuel; Homan, Jeroen (IOP Publishing, 2012-10)
    We report on six RXTE observations taken during the 2010 outburst of the 11 Hz accreting pulsar IGR J17480–2446 located in the globular cluster Terzan 5. During these observations we find power spectra which resemble those ...
  • Polat, Baris E.; Blankschtein, Daniel; Langer, Robert (Informa Healthcare, 2010-12)
    Importance of the field: Transdermal delivery of macromolecules provides an attractive alternative route of drug administration when compared to oral delivery and hypodermic injection because of its ability to bypass the ...
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