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Browsing MIT Open Access Articles by Title

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  • Branham, Matthew S.; Hsu, Wei-Chun; Yerci, Selcuk; Boriskina, Svetlana V.; Hoard, Brittany R.; Han, Sang Eon; Chen, Gang; Loomis III, James (Wiley Blackwell, 2015-02)
    Only ten micrometer thick crystalline silicon solar cells deliver a short-circuit current of 34.5 mA cm[superscript −2] and power conversion efficiency of 15.7%. The record performance for a crystalline silicon solar cell ...
  • Sheh, Alexander; Ge, Zhongming; Parry, Nicola Maria Anne; Muthupalani, Sureshkumar; Rager, Julia E.; Raczynski, Arkadiusz R.; Mobley, Melissa W.; McCabe, Amanda F.; Fry, Rebecca C.; Wang, Timothy C.; Fox, James G. (American Association for Cancer Research, 2011-06)
    Helicobacter pylori infection promotes male predominant gastric adenocarcinoma in humans. Estrogens reduce gastric cancer risk and previous studies showed that prophylactic 17β-estradiol (E2) in INS-GAS mice decreases H. ...
  • Williams, Christopher Leigh; Goeke, Robert F.; Hewitt, Jacqueline N.; Morgan, Edward H.; Remillard, Ronald Alan; Cappallo, Roger J.; Corey, Brian E.; Kincaid, B. B.; Kratzenberg, Eric; Lonsdale, Colin John; McWhirter, Stephen R.; Rogers, Alan E. E.; Salah, J. E.; Whitney, Alan R. (IOP Publishing, 2013-06)
    We present a Stokes I, Q and U survey at 189 MHz with the Murchison Widefield Array 32 element prototype covering 2400 deg[superscript 2]. The survey has a 15.6 arcmin angular resolution and achieves a noise level of 15 ...
  • Henry, Asegun; Chen, Gang; Plimpton, Steven J.; Thompson, Aidan (American Physical Society, 2010-10)
    The thermal conductivity of nanostructures generally decreases with decreasing size because of classical size effects. The axial thermal conductivity of polymer chain lattices, however, can exhibit the opposite trend, ...
  • Kamisli, Fatih; Lim, Jae S. (Institute of Electrical and Electronics Engineers (IEEE), 2011-03)
    Transforms used in image coding are also commonly used to compress prediction residuals in video coding. Prediction residuals have different spatial characteristics from images, and it is useful to develop transforms that ...
  • Yoon, Soon Fatt; Chen, Kah Pin; Ng, Tien Khee; Tan, Kian Hua; Loke, Wan Khai; Wicaksono, Satrio; Lew, Kim Luong; Pitera, Arthur J.; Fitzgerald, Eugene A.; Ringel, Steve A.; Carlin, Andrew M.; Gonzalez, Maria (Institute of Electrical and Electronics Engineers, 2010-02)
    The effect of different arsenic species (As[subscript 2] or As[subscript 4]) on the quality of molecular beam epitaxy (MBE) grown GaNAsSb materials (samples A and B) and GaAs/ GaNAsSb/GaAs p+n-n+ devices (samples C and D) ...
  • Sander, Michelle Yen-Ling; Chang, Guoqing; Byun, Hyunil; Morse, Jonathan Lee; Chao, David; Shen, Hanfei M.; Motamedi, Ali R.; Petrich, Gale S.; Kolodziejski, Leslie A.; Ippen, Erich P.; Kaertner, Franz X. (Optical Society of America, 2010-05)
    Saturable Bragg reflector (SBR) mode-locked Er-doped fiber lasers around 1550nm with a repetition rate of 1GHz are demonstrated. Key steps to obtain stable, femtosecond pulses by avoiding thermal damage of the SBR are ...
  • 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 ...
  • McClintock, Jeffrey E.; Rupen, Michael P.; Torres, M. A. P.; Steeghs, D.; Levine, Alan M.; Orosz, Jerome A.; Remillard, Ronald Alan (IOP Publishing, 2009-06)
    The bright X-ray transient H1743−322 was observed daily by the Rossi X-ray Timing Explorer during most of its eight-month outburst in 2003. We present a detailed spectral analysis and a supporting timing analysis of all ...
  • 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. ...
  • Person, Michael J.; Bosh, Amanda S.; Levine, Stephen E.; Gulbis, Amanda A. S.; Zangari, A. M.; Zuluaga, Carlos Andres; Sallum, S.; Springmann, A. (IOP Publishing, 2013-08)
    On 2011 June 23, stellar occultations by both Pluto (this work) and Charon (future analysis) were observed from numerous ground stations as well as the Stratospheric Observatory for Infrared Astronomy (SOFIA). This first ...
  • Tikekar, Mehul; Huang, Chao-Tsung; Sze, Vivienne; Chandrakasan, Anantha P.; Juvekar, Chiraag Shashikant (Institute of Electrical and Electronics Engineers (IEEE), 2013-10)
    High Efficiency Video Coding, the latest video standard, uses larger and variable-sized coding units and longer interpolation filters than [H.264 over AVC] to better exploit redundancy in video signals. These algorithmic ...
  • Huang, Chao-Tsung; Tikekar, Mehul; Juvekar, Chiraag Shashikant; Sze, Vivienne; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2013-02)
    The latest video coding standard High Efficiency Video Coding (HEVC) provides 50% improvement in coding efficiency compared to H.264/AVC, to meet the rising demand for video streaming, better video quality and higher ...
  • Paidimarri, Arun; Mercier, Patrick P.; Chandrakasan, Anantha P.; Nadeau, Phillip (Institute of Electrical and Electronics Engineers (IEEE), 2013-01)
    A 2.4 GHz TX in 65 nm CMOS defines three channels using three high-Q FBARs and supports OOK, BPSK and MSK. The oscillators have -132 [dBc over Hz] phase noise at 1 MHz offset, and are multiplexed to an efficient resonant ...
  • 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 ...
  • Weinstein, Dana; Popa, Laura Cornelia (Institute of Electrical and Electronics Engineers (IEEE), 2013-07)
    A 2D electron gas (2DEG) interdigitated transducer (IDT) in Gallium Nitride (GaN) resonators is introduced and demonstrated. This metal-free transduction does not suffer from the loss mechanisms associated with more commonly ...
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