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Browsing MIT Open Access Articles by Title

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  • The 2005 Chios Ancient Shipwreck Survey: New Methods for Underwater Archaeology 
    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 ...
  • The 24-Hour Knowledge Factory: Can It Replace the Graveyard Shift? 
    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 ...
  • 2.5D cartoon models 
    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 ...
  • 2D Excitons as Primary Energy Carriers in Organic Crystals: The Case of Oligoacenes 
    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 ...
  • 2D protrusion but not motility predicts growth factor–induced cancer cell migration in 3D collagen 
    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 ...
  • 2MASS J06164006-6407194: THE FIRST OUTER HALO L SUBDWARF 
    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 ...
  • 2-Methylhopanoids are maximally produced in akinetes of Nostoc punctiforme: geobiological implications 
    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 ...
  • 2′-O Methylation of Internal Adenosine by Flavivirus NS[subscript 5] Methyltransferase 
    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 ...
  • 30-nm InAs PHEMTs With f[subscript T] = 644 GHz and f[subscript max] = 681 GHz 
    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 ...
  • 30 nm In[subscript 0.7]Ga[subscript 0.3]As inverted-type HEMTs with reduced gate leakage current for logic applications 
    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 ...
  • 30 to 50 ns liquid-crystal optical switches 
    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 % ...
  • A 32-mu W 1.83-kS/s Carbon Nanotube Chemical Sensor System 
    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 ...
  • A 350 mu W CMOS MSK Transmitter and 400 mu W OOK Super-Regenerative Receiver for Medical Implant Communications 
    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 ...
  • 3D exploitation of large urban photo archives 
    Snavely, Noah; Anderson, Ross W.; Cho, Peter L. (SPIE, 2010-04)
    Recent work in computer vision has demonstrated the potential to automatically recover camera and scene geometry from large collections of uncooperatively-collected photos. At the same time, aerial ladar and Geographic ...
  • 3D Modeling with Silhouettes 
    Rivers, Alec Rothmyer; Durand, Fredo; Igarashi, Takeo (Association for Computing Machinery (ACM), 2010-07)
    We present a new sketch-based modeling approach in which models are interactively designed by drawing their 2D silhouettes from different views. The core idea of our paper is to limit the input to 2D silhouettes, removing ...
  • 3D pose estimation and segmentation using specular cues 
    Raskar, Ramesh; Agrawal, Amit; Chang, Ju Yong (Institute of Electrical and Electronics Engineers, 2009-08)
    We present a system for fast model-based segmentation and 3D pose estimation of specular objects using appearance based specular features. We use observed (a) specular reflection and (b) specular flow as cues, which are ...
  • 3-Ketoacyl thiolase delays aging of Caenorhabditis elegans and is required for lifespan extension mediated by sir-2.1 
    Berdichevsky, Alina; Nedelcu, Simona; Boulias, Konstantinos; Bishop, Nicholas A.; Guarente, Leonard Pershing; Horvitz, H. Robert (National Academy of Sciences, 2010-11)
    Studies of long-lived Caenorhabditis elegans mutants have identified several genes that function to limit lifespan, i.e., loss-of-function mutations in these genes promote longevity. By contrast, little is known about ...
  • A 45nm 0.5V 8T column-interleaved SRAM with on-chip reference selection loop for sense-amplifier 
    Sinangil, Mahmut Ersin; Verma, Naveen; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2009-11)
    8T bit-cells hold great promise for overcoming device variability in deeply scaled SRAMs and enabling aggressive voltage scaling for ultra-low-power. This paper presents an array architecture and circuits with minimal ...
  • A 4Gb/s/ch 356fJ/b 10mm equalized on-chip interconnect with nonlinear charge-injecting transmit filter and transimpedance receiver in 90nm CMOS 
    Stojanovic, Vladimir Marko; Kim, Byungsub (Institute of Electrical and Electronics Engineers, 2009-05)
    This paper presents a transceiver for fast and energy-efficient global on-chip communication, consisting of a nonlinear charge-injecting (CI) 3-tap transmit filter (TX) and a sampling receiver (RX) with transimpedance ...
  • A 4-side tileable back illuminated 3D-integrated Mpixel CMOS image sensor 
    Suntharalingam, Vyshnavi; Berger, Robert; Clark, Stewart; Knecht, Jeffrey M.; Messier, Andrew V.; Newcomb, Kevin L.; Rathman, Dennis D.; Slattery, Richard L.; Soares, Antonio M.; Stevenson, Charles; Warner, Keith; Young, Douglas J.; Ang, Lin Ping; Mansoorian, Barmak; Shaver, David C. (Institute of Electrical and Electronics Engineers, 2009-02)
    The dominant trend with conventional image sensors is toward scaled-down pixel sizes to increase spatial resolution and decrease chip size and cost. While highly capable chips, these monolithic image sensors devote substantial ...
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