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Browsing MIT Open Access Articles by Title

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  • Baek, Hyoung Su; Demanet, Laurent (IOP Publishing, 2012-04)
    This paper revisits the problem of recovering a smooth, isotropic, layered wave speed profile from surface traveltime information. While it is classic knowledge that the diving (refracted) rays classically determine the ...
  • Holodnak, John T.; Ipsen, Ilse C. F.; Wentworth, Thomas (Society for Industrial and Applied Mathematics, 2015-08)
    The leverage scores of a full-column rank matrix A are the squared row norms of any orthonormal basis for range (A). We show that corresponding leverage scores of two matrices A and A + ΔA are close in the relative sense ...
  • Entekhabi, Dara; Wojcik, Rafal; McLaughlin, Dennis; Konings, Alexandra G. (Institute of Electrical and Electronics Engineers, IEEE Geoscience and Remote Sensing Society, 2009-05)
    Temporally and spatially variable rainfall replicates are frequently required in hydrologic applications of ensemble forecasting and data assimilation. Ensemble methods can be expected to work better when the rainfall ...
  • Guerrero, R.; Aliev, F. G.; Villar, R.; Santos, Tiffany S.; Moodera, Jagadeesh; Dugaev, V. K.; Barnas, J. (American Physical Society, 2010-01)
    We report on dependence of conductance and tunnelling magnetoresistance on bias voltage at different temperatures down to 2 K in Co|Al[subscript 2]O[subscript 3](10 Å)|Si(δ)|Al[subscript 2]O[subscript 3](2 Å)|Permalloy ...
  • Mazzeo, G.; Yablonovitch, E.; Jiang, H. W.; Bai, Yu; Fitzgerald, Eugene A. (American Institute of Physics (AIP), 2010-05)
    Germanium rich heterostructures can constitute a valid alternative to Silicon for the confinement of single electron spins. The conduction band discontinuity in SiGe/Ge heterostructures grown on pure germanium substrate ...
  • Lecoanet, Daniel; Brown, Benjamin P.; Zweibel, Ellen G.; Oishi, Jeffrey S.; Vasil, Geoffrey M.; Burns, Keaton James (IOP Publishing, 2014-12)
    Thermal conduction is an important energy transfer and damping mechanism in astrophysical flows. Fourier's law, in which the heat flux is proportional to the negative temperature gradient, leading to temperature diffusion, ...
  • Brenner, Howard (American Physical Society, 2014-04)
    “Diffuse interface” theories for single-component fluids—dating back to van der Waals, Korteweg, Cahn-Hilliard, and many others—are currently based upon an ad hoc combination of thermodynamic principles (built largely upon ...
  • Liu, Sheng; Liu, Yang; Cebeci, Hulya Geyik; Guzman de Villoria, Roberto; Lin, Jun-Hong; Wardle, Brian L. (SPIE, 2010-04)
    Several generations of ionic polymer metal composite (IPMC) actuators have been developed since 1992. It has been discovered that the composite electrodes which are composed of electronic and ionic conductors, have great ...
  • Ruppel, Carolyn; Scandella, Benjamin; Varadharajan, Charuleka; Hemond, Harold F.; Juanes, Ruben (American Geophysical Union, 2011-03)
    Methane is a potent greenhouse gas, but its effects on Earth's climate remain poorly constrained, in part due to uncertainties in global methane fluxes to the atmosphere. An important source of atmospheric methane is the ...
  • Mancini, Stefano; Braunstein, Samuel L.; Pirandola, Stefano; Lloyd, Seth (Institute of Electrical and Electronics Engineers, 2009-03)
    We consider the problem of privacy in direct communications, showing how quantum mechanics can be useful to guarantee a certain level of confidentiality. In particular, we review a continuous variable approach recently ...
  • Bubis, Roy; Kantor, Yacov; Kardar, Mehran (IOP Publishing, 2009-11)
    We study polymers attached to spherical (circular) or paraboloidal (parabolic) probes in three (two) dimensions. Both self-avoiding and random walks are examined numerically. The behavior of a polymer of size R[subscript ...
  • Gorsky, A.; Shifman, Mikhail; Yung, A. (American Physical Society, 2011-04)
    Non-Abelian strings exist in the color-flavor locked phase of dense QCD. We show that kinks appearing in the world-sheet theory on these strings, in the form of the kink-antikink bound pairs, are the magnetic monopoles—descendants ...
  • Alpichshev, Zhanybek; Mahmood, Fahad; Cao, Gang; Gedik, Nuh (American Physical Society, 2015-01)
    We use ultrafast optical spectroscopy to observe binding of charged single-particle excitations (SE) in the magnetically frustrated Mott insulator Na[subscript 2]IrO[subscript 3]. Above the antiferromagnetic ordering ...
  • Nishida, Yusuke; Tan, Shina (American Physical Society, 2009-06)
    A Fermi-Fermi mixture of 40K and 6Li does not exhibit the Efimov effect in a free space, but the Efimov effect can be induced by confining only 40K in one dimension. Here the Efimov’s three-body parameter is controlled by ...
  • Nishida, Yusuke; Tan, Shina (American Physical Society, 2010-12)
    We show that a purely s-wave interaction in three dimensions (3D) can induce higher partial-wave resonances in mixed dimensions. We develop two-body scattering theories in all three cases of 0D-3D, 1D-3D, and 2D-3D mixtures ...
  • Spokoini, Rachel; Moldavski, Ofer; Nahmias, Yaakov; England, Jeremy L.; Schuldiner, Maya; Kaganovich, Daniel (Elsevier, 2012-09)
    The division of the S. cerevisiae budding yeast, which produces one mother cell and one daughter cell, is asymmetric with respect to aging. Remarkably, the asymmetry of yeast aging coincides with asymmetric inheritance of ...
  • Bellm, Eric C.; Pottschmidt, Katja; Tomsick, John A.; Boggs, Steven E.; Chakrabarty, Deepto; Christensen, Finn E.; Craig, William W.; Hailey, Charles J.; Harrison, Fiona A.; Stern, Daniel; Walton, Dominic J.; Zhang, William W.; Chakrabarty, Deepto; Furst, Felix; Wilms, Jorn (IOP Publishing, 2014-08)
    GRO J1008–57 is a high-mass X-ray binary for which several claims of a cyclotron resonance scattering feature near 80 keV have been reported. We use NuSTAR, Suzaku, and Swift data from its giant outburst of 2012 November ...
  • Bayliss, Daniel D. R.; Winn, Joshua Nathan; Mardling, Rosemary A.; Sackett, Penny D. (Institute of Physics, 2010-10)
    We present high-precision radial velocity observations of WASP-17 throughout the transit of its close-in giant planet, using the MIKE spectrograph on the 6.5 m Magellan Telescope at Las Campanas Observatory. By modeling ...
  • Quintana, Elisa V.; Rowe, Jason F.; Barclay, Thomas; Howell, Steve B.; Ciardi, David R.; Demory, Brice-Olivier; Caldwell, Douglas A.; Borucki, William J.; Christiansen, Jessie L.; Jenkins, Jon M.; Klaus, Todd C.; Fulton, Benjamin J.; Morris, Robert L.; Sanderfer, Dwight T.; Shporer, Avi; Smith, Jeffrey C.; Still, Martin; Thompson, Susan E. (IOP Publishing, 2013-04)
    We present high precision photometry of Kepler-41, a giant planet in a 1.86 day orbit around a G6V star that was recently confirmed through radial velocity measurements. We have developed a new method to confirm giant ...
  • Cappallo, Roger J.; de Oliveira-Costa, Angelica; Dillon, Joshua Shane; Ewall-Wice, Aaron Michael; Feng, Lu; Hewitt, Jacqueline N.; Lonsdale, Colin John; McWhirter, Stephen R.; Morgan, Edward H.; Neben, Abraham Richard; Tegmark, Max Erik; Williams, Christopher Leigh (IOP Publishing, 2015-07)
    We confirm our recent prediction of the "pitchfork" foreground signature in power spectra of high-redshift 21 cm measurements where the interferometer is sensitive to large-scale structure on all baselines. This is due to ...
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