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Browsing MIT Open Access Articles by Title

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  • Impact of Stoichiometry on the Electronic Structure of PbS Quantum Dots 
    Kim, Donghun; Kim, Dong-Ho; Lee, Joo-Hyoung; Grossman, Jeffrey C. (American Physical Society, 2013-05)
    Although the stoichiometry of bulk lead sulfide (PbS) is exactly 1∶1, that of quantum dots (QDs) can be considerably different from this crystalline limit. Employing first-principles calculations, we show that the impact ...
  • Impact of structured heterogeneities on reactive two-phase porous flow 
    Reeves, Daniel; Rothman, Daniel H. (American Physical Society, 2012-09)
    Two-phase flow through heterogeneous media leads to scale-free distributions of irregularly shaped pockets of one fluid trapped within the other. Although reactions within these fluids are often modeled at the homogeneous ...
  • Impact of the cracks lost in the imaging process on computing linear elastic properties from 3D microtomographic images of Berea sandstone 
    Toksoz, M. Nafi; Zhang, Yang (Society of Exploration Geophysicists, 2012-03)
    With the current developments in imaging/computational techniques and resources, computational rock physics has been emerging as a new field of study. Properties of rocks are examined by carrying out extensive numerical ...
  • The impact of the European Union Emissions Trading Scheme on US aviation 
    Malina, Robert; McConnachie, Dominic; Winchester, Niven Stewart; Wollersheim, Christoph; Paltsev, Sergey; Waitz, Ian A. (Elsevier B.V., 2011-12)
    We estimate the economic impacts on US airlines that may arise from the inclusion of aviation in the European Union Emissions Trading Scheme from 2012 to 2020. We find that the Scheme would only have a small impact on US ...
  • Impact of the latitudinal distribution of tropical cyclones on ocean heat transport 
    Jansen, Malte Friedrich; Ferrari, Raffaele (American Geophysical Union, 2009-03)
    The heavy winds associated with tropical cyclones generate strong upper ocean mixing. Recent studies suggest that this enhanced mixing significantly contributes to the ocean poleward heat transport, mainly due to a ...
  • Impact of traffic symbol directional cues on pilot performance during TCAS events 
    Olson, Wesley A.; Kaliardos, Bill; Zuschlag, Michael; Kendra, Andrew (Institute of Electrical and Electronics Engineers, 2009-12)
    Implementation of Automatic Dependent Surveillance - Broadcast (ADS-B) technology enables aircraft to broadcast, receive and display a number of aircraft parameters that were not previously available to pilots. While ...
  • Impact of transport model errors on the global and regional methane emissions estimated by inverse modelling 
    Locatelli, R.; Bousquet, P.; Chevallier, F.; Fortems-Cheney, A.; Szopa, S.; Saunois, M.; Agusti-Panareda, A.; Bergmann, D.; Bian, H.; Cameron-Smith, P.; Chipperfield, M. P.; Gloor, E.; Houweling, S.; Kawa, S. R.; Krol, M.; Patra, P. K.; Saito, R.; Wilson, C.; Rigby, Matthew; Prinn, Ronald G. (Copernicus GmbH, 2013-10)
    A modelling experiment has been conceived to assess the impact of transport model errors on methane emissions estimated in an atmospheric inversion system. Synthetic methane observations, obtained from 10 different model ...
  • Impact of unit commitment constraints on generation expansion planning with renewables 
    Palmintier, Bryan Stephen; Webster, Mort David (Institute of Electrical and Electronics Engineers, 2011-07)
    Growing use of renewables pushes thermal generators against operating constraints - e.g. ramping, minimum output, and operating reserves - that are traditionally ignored in expansion planning models. We show how including ...
  • The Impact of Weld Metal Creep Strength on the Overall Creep Strength of 9% Cr Steel Weldments 
    Mayr, Peter; Mitsche, Stefan; Cerjak, Horst; Allen, Samuel Miller (ASME International, 2011-03)
    In this work, three joints of a X11CrMoWVNb9-1-1 (P911) pipe were welded with three filler metals by conventional arc welding. The filler metals varied in creep strength level, so that one overmatched, one undermatched, ...
  • Impacts of HONO sources on the photochemistry in Mexico City during the MCMA-2006/MILAGO Campaign 
    Li, Guohui; Lei, Wenfang; Zavala, R.; Volkamer, R.; Dusanter, S.; Stevens, P.; Molina, Luisa Tan (Copernicus Publications on behalf of the European Geosciences Union, 2010-07)
    The contribution of HONO sources to the photochemistry in Mexico City is investigated during the MCMA-2006/MILAGO Campaign using the WRF-CHEM model. Besides the homogeneous reaction of NO with OH, four additional HONO ...
  • The Impacts of the Affordable Care Act: How Reasonable Are the Projections? 
    Gruber, Jonathan (National Bureau of Economic Research, 2011-06)
    The Patient Protection and Affordable Care Act (ACA) is the most comprehensive reform of the U.S. medical system in at least 45 years. The ACA transforms the non-group insurance market in the United States, mandates that ...
  • Impaired Autophagy in the Lipid-Storage Disorder Niemann-Pick Type C1 Disease 
    Sarkar, Sovan; Carroll, Bernadette; Buganim, Yosef; Maetzel, Dorothea; Ng, Alex H.M.; Cassady, John P.; Cohen, Malkiel A.; Chakraborty, Souvik; Wang, Haoyi; Spooner, Eric; Ploegh, Hidde; Gsponer, Joerg; Korolchuk, Viktor I.; Jaenisch, Rudolf (Elsevier, 2013-11)
    Autophagy dysfunction has been implicated in misfolded protein accumulation and cellular toxicity in several diseases. Whether alterations in autophagy also contribute to the pathology of lipid-storage disorders is not ...
  • Impaired SHP2-Mediated Extracellular Signal-Regulated Kinase Activation Contributes to Gefitinib Sensitivity of Lung Cancer Cells with Epidermal Factor Receptor-Activating Mutations 
    Lazzara, Matthew J.; Lane, Keara M.; Chan, Richard; Jasper, Paul J.; Yaffe, Michael B.; Sorger, Peter K.; Jacks, Tyler E.; Neel, Benjamin G.; Lauffenburger, Douglas A. (American Association for Cancer Research, 2010-04)
    Most non–small cell lung cancers (NSCLC) display elevated expression of epidermal growth factor receptor (EGFR), but response to EGFR kinase inhibitors is predominantly limited to NSCLC harboring EGFR-activating mutations. ...
  • Impaired Striatal Akt Signaling Disrupts Dopamine Homeostasis and Increases Feeding 
    Speed, Nicole; Saunders, Christine; Davis, Adeola R.; Owens, W. Anthony; Matthies, Heinrich J. G.; Saadat, Sanaz; Kennedy, Jack P.; Vaughan, Roxanne A.; Neve, Rachael L.; Lindsley, Craig W.; Russo, Scott J.; Daws, Lynette C.; Niswender, Kevin D.; Galli, Aurelio (Public Library of Science, 2011-09)
    The prevalence of obesity has increased dramatically worldwide. The obesity epidemic begs for novel concepts and therapeutic targets that cohesively address “food-abuse” disorders. We demonstrate a molecular link between ...
  • Impaired Striatal Akt Signaling Disrupts Dopamine Homeostasis and Increases Feeding 
    Bonocora, Richard P.; Abel, Ethan V.; Shub, David A.; Zeng, Qinglu (Proceedings of the National Academy of Sciences (PNAS), 2011-09)
    Since its initial description more than two decades ago, the ribosome bypass (or “hop”) sequence of phage T4 stands out as a uniquely extreme example of programmed translational frameshifting. The gene for a DNA topoisomerase ...
  • Impaired Sulfate Metabolism and Epigenetics: Is There a Link in Autism? 
    Hartzell, Samantha R.; Seneff, Stephanie (MDPI AG, 2012-10)
    Autism is a brain disorder involving social, memory, and learning deficits, that normally develops prenatally or early in childhood. Frustratingly, many research dollars have as yet failed to identify the cause of autism. ...
  • Impaired Theory Of Mind for Moral Judgment in High-Functioning Autism 
    Moran, Joseph M.; Young, Liane L.; Saxe, Rebecca R.; Lee, Su Mei; O'Young, Daniel; Mavros, Penelope L.; Gabrieli, John D. E. (Proceedings of the National Academy of Sciences (PNAS), 2011-02)
    High-functioning autism (ASD) is characterized by real-life difficulties in social interaction; however, these individuals often succeed on laboratory tests that require an understanding of another person's beliefs and ...
  • Impeding Hohlraum Plasma Stagnation in Inertial-Confinement Fusion 
    Li, C. K.; Seguin, Fredrick Hampton; Frenje, Johan A.; Rosenberg, Michael Jonathan; Rinderknecht, Hans George; Zylstra, Alex Bennett; Petrasso, Richard D.; Amendt, P. A.; Landen, O. L.; Mackinnon, A. J.; Town, R. P. J.; Wilks, S. C.; Betti, R.; Meyerhofer, D. D.; Soures, J. M. (American Physical Society, 2012-01)
    This Letter reports the first time-gated proton radiography of the spatial structure and temporal evolution of how the fill gas compresses the wall blowoff, inhibits plasma jet formation, and impedes plasma stagnation in ...
  • An imperative extension to Alloy 
    Near, Joseph Paul; Jackson, Daniel (Springer, 2010-02)
    We extend the Alloy language with the standard imperative constructs; we show the mix of declarative and imperative constructs to be useful in modeling dynamic systems. We present a translation from our extended language ...
  • Imperfect information and labor market bias against small and medium-sized enterprises: a Korean case 
    Park, Soonae; Kim, Byung-Yeon; Jang, Wonchang; Nam, Kyung-min (Springer-Verlag, 2014-03)
    We examine the labor market’s bias against small and medium-sized enterprises focusing on the Seoul Digital Industrial Complex case. We adopt Heckman’s approach to control selection bias, and use primary data from questionnaire ...
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