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Browsing MIT Open Access Articles by Title

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  • Adams, Allan; Maloney, Alexander; Sinha, Aninda; Vazquez, Samuel E. (Institute of Physics, 2009-03)
    We argue that higher-curvature terms in the gravitational Lagrangian lead, via non-relativistic gauge-gravity duality, to nite renormalization of the dynamical exponent of the dual conformal eld theory. Our argument ...
  • Belloni, Alexandre; Chernozhukov, Victor V. (Institute of Mathematical Statistics, 2011-02)
    We consider median regression and, more generally, a possibly infinite collection of quantile regressions in high-dimensional sparse models. In these models, the number of regressors p is very large, possibly larger than ...
  • Foley, Brendan; Dellaporta, Katerina; Sakellariou, Dimitris; Bingham, Brian S.; Camilli, Richard; Eustice, Ryan M.; Evagelistis, Dionysis; Ferrini, Vicki Lynn; Katsaros, Kostas; Kourkoumelis, Dimitris; Mallios, Aggelos; Micha, Paraskevi; Mindell, David A.; Roman, Christopher; Singh, Hanumant; Switzer, David S.; Theodoulou, Theotokis (The American School of Classical Studies at Athens, 2009-04)
    In 2005 a Greek and American interdisciplinary team investigated two shipwrecks off the coast of Chios dating to the 4th-century b.c. and the 2nd/1st century. The project pioneered archaeological methods of precision ...
  • Parker, Alex H.; Buie, Marc W.; Osip, David J.; Gwyn, Stephen D. J.; Holman, Matthew J.; Borncamp, David M.; Spencer, John R.; Benecchi, Susan D.; Binzel, Richard P.; DeMeo, Francesca E.; Fuentes, Cesar I.; Gay, Pamela L.; Kavelaars, J. J.; McLeod, Brian A.; Petit, Jean-Marc; Sheppard, Scott S.; Stern, S. Alan; Tholen, David J.; Trilling, David E.; Ragozzine, Darin A.; Wasserman, Lawrence H.; Fabbro, Sebastian; The Ice Hunters (IOP Publishing, 2013-03)
    We present the discovery of a long-term stable L5 (trailing) Neptune Trojan in data acquired to search for candidate trans-Neptunian objects for the New Horizons spacecraft to fly by during an extended post-Pluto mission. ...
  • Gupta, Amar (IEEE Computer Society, 2009-01)
    Collaborating centers in time zones six to eight hours apart can transfer work so that every center is working during the daytime. Although this concept avoids the hazards of night work, it requires careful planning and a ...
  • Rivers, Alec Rothmyer; Igarashi, Takeo; Durand, Fredo (Association for Computing Machinery (ACM), 2010-07)
    We present a way to bring cartoon objects and characters into the third dimension, by giving them the ability to rotate and be viewed from any angle. We show how 2D vector art drawings of a cartoon from different views can ...
  • Godoy, Philip A.; Chung, SungWon; Barton, Taylor W.; Perreault, David J.; Dawson, Joel L.; Perron, J. Taylor (Institute of Electrical and Electronics Engineers (IEEE), 2011-01)
    We present a high-efficiency transmitter based on asymmetric multilevel outphasing (AMO). AMO transmitters improve their efficiency over LINC (linear amplification using nonlinear components) transmitters by switching the ...
  • Emelianova, E.V.; Athanasopoulos, S.; Silbey, Robert J.; Beljonne, D. (American Physical Society, 2010-05)
    A number of organic crystals show anisotropic excitonic couplings, with weak interlayer interactions between molecules that are more strongly coupled within the layers. The resulting energy carriers are intralayer 2D ...
  • Meyer, Aaron Samuel; Hughes-Alford, Shannon Kay; Kay, Jennifer Elizabeth; Castillo, Amalchi; Wells, Alan; Gertler, Frank; Lauffenburger, Douglas A. (Rockefeller University Press, The, 2012-06)
    Growth factor–induced migration is a critical step in the dissemination and metastasis of solid tumors. Although differences in properties characterizing cell migration on two-dimensional (2D) substrata versus within ...
  • Shin, David; Mueller, Peter (International Union of Crystallography (IUCr), 2012-08)
    The structure of ortho-vanillin, C[subscript 8]H[subscript 8]O[subscript 3], has been revisited with modern methods and at low temperature (100 K). The previous structure [Iwasaki et al. (1976). Acta Cryst. B32, 1264-1266] ...
  • Cushing, Michael C.; Looper, Dagny; Burgasser, Adam J.; Kirkpatrick, J. Davy; Faherty, Jacqueline; Cruz, Kelle L.; Sweet, Anne; Sanderson, Robyn Ellyn (American Astronomical Society, 2009-04)
    We present the serendipitous discovery of an L subdwarf in the Two Micron All Sky Survey (2MASS) J06164006–6407194, in a search of the 2MASS for T dwarfs. Its spectrum exhibits features indicative of both a cool and metal ...
  • Gelino, Christopher R.; Burgasser, Adam J. (IOP Publishing, 2010-05)
    We identify the L dwarf 2MASS J20261584–2943124 as an unresolved spectral binary, based on low-resolution, near-infrared spectroscopy from IRTF/SpeX. The data reveal a peculiar absorption feature at 1.6 μm, previously noted ...
  • Doughty, David M.; Hunter, R. C.; Summons, Roger Everett; Newman, Dianne K. (John Wiley & Sons, Inc., 2009-10)
    2-Methylhopanes, molecular fossils of 2-methylbacteriohopanepolyol (2-MeBHP) lipids, have been proposed as biomarkers for cyanobacteria, and by extension, oxygenic photosynthesis. However, the robustness of this interpretation ...
  • Dong, Hongping; Chang, David C.; Ho Chia Hua, Maggie; Lim, Siew Pheng; Chionh, Yok Hian; Hia, Fabian; Lee, Yie Hou; Kukkaro, Petra; Lok, Shee-Mei; Dedon, Peter C.; Shi, Pei-Yong (Public Library of Science, 2012-04)
    RNA modification plays an important role in modulating host-pathogen interaction. Flavivirus NS5 protein encodes N-7 and 2′-O methyltransferase activities that are required for the formation of 5′ type I cap (m[superscript ...
  • Do, Loi H.; Lippard, Stephen J. (American Chemical Society (ACS), 2009-10)
    A series of 2-phenoxypyridyl and 2-phenoxyimino ligands, H[subscript 2]L[superscript R,R′] [2,2′-(5,5′-(1,2-phenylenebis(ethyne-2,1-diyl))bis(pyridine-5,2-diyl))diphenol, where R = H, Me, or t-Bu, and R′ = H or Ph] and ...
  • Kim, Dae-Hyun; del Alamo, Jesus A. (Institute of Electrical and Electronics Engineers, 2010-07)
    We present 30-nm InAs pseudomorphic HEMTs (PHEMTs) on an InP substrate with record fT characteristics and well-balanced fT and f[subscript max] values. This result was obtained by improving short-channel effects through ...
  • Kim, Tae-Woo; Kim, Dae-Hyun; del Alamo, Jesus A. (Institute of Electrical and Electronics Engineers, 2010-03)
    We have fabricated 30 nm In0.7Ga0.3As Inverted-Type HEMTs with outstanding logic performance, scalability and high frequency characteristics. The motivation for this work is the demonstration of reduced gate leakage current ...
  • Osgood, R. M.; Kimball, B. R.; Geis, Michael W.; Turner, George W.; Lyszczarz, Theodore M.; Molnar, Richard J. (SPIE, 2010-02)
    The optical switching times of liquid-crystal cells using 5CB, 5OCB and PCH5 liquid crystal materials have been characterized as a function of applied voltage, V, and temperature, T. The transition time from 90 to 10 % ...
  • Cho, Taeg Sang; Lee, Kyeong-Jae; Kong, Jing; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2009-01)
    This paper presents an energy-efficient chemical sensor system that uses carbon nanotubes (CNT) as the sensing medium. The room-temperature operation of CNT sensors eliminates the need for micro hot-plate arrays, which ...
  • Dawson, Joel L.; Chandrakasan, Anantha P.; Bohorquez, Jose L. (Institute of Electrical and Electronics Engineers, 2009-03)
    Recent advances in the medical field are spurring the need for ultra-low power transceivers for wireless communication with medical implants. To deal with the growing demand for medical telemetry, the FCC commissioned the ...
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