Now showing items 19926-19945 of 32332

    • ¹⁷O NMR Investigation of Water Structure and Dynamics 

      Keeler, Eric George; Michaelis, Vladimir K.; Griffin, Robert Guy (American Chemical Society (ACS), 2016-08)
      The structure and dynamics of the bound water in barium chlorate monohydrate were studied with ¹⁷O nuclear magnetic resonance (NMR) spectroscopy in samples that are stationary and spinning at the magic-angle in magnetic ...
    • O(1)-approximations for maximum movement problems 

      Berman, Piotr; Demaine, Erik D.; Zadimoghaddam, Morteza (Springer Berlin / Heidelberg, 2011-08)
      We develop constant-factor approximation algorithms for minimizing the maximum movement made by pebbles on a graph to reach a configuration in which the pebbles form a connected subgraph (connectivity), or interconnect a ...
    • An O(log n/log log n)-approximation algorithm for the asymmetric traveling salesman problem 

      Asadpour, Arash; Goemans, Michel X.; Madry, Aleksander; Gharan, Shayan Oveis; Saberi, Amin (Society for Industrial and Applied Mathematics, 2010-01)
      We consider the Asymmetric Traveling Salesman problem for costs satisfying the triangle inequality. We derive a randomized algorithm which delivers a solution within a factor O(log n/ log log n) of the optimum with high ...
    • An O(Nm) Time Algorithm for Finding the Min Length Directed Cycle in a Graph 

      Sedeno-Noda, Antonio; Orlin, James B (Society for Industrial and Applied Mathematics, 2016-10)
      In this paper, we introduce an O(nm) time algorithm to determine the minimum length directed cycle (also called the "minimum weight directed cycle") in a directed network with n nodes and m arcs and with no negative length ...
    • O-antigen diversity and lateral transfer of the wbe region among Vibrio splendidus isolates 

      Wildschutte, Hans; Preheim, Sarah Pacocha; Hernandez, Yasiel; Polz, Martin F. (Blackwell Publishing, 2010-11)
      The O-antigen is a highly diverse structure expressed on the outer surface of Gram-negative bacteria. The products responsible for O-antigen synthesis are encoded in the wbe region, which exhibits extensive genetic diversity. ...
    • O-site and T-site Occupation of α-phase PdH[subscript x] and PdD[subscript x] 

      Hagelstein, Peter L (International Society of Condensed Matter Nuclear Scientists (ISCMNS), 2015)
      An important study of the solubility of hydrogen in α-phase PdH[subscript x] and deuterium in α-phase PdH[subscript x] over a wide temperature range was published by Clewley et al. (J. Chem. Soc., Faraday Trans. 1: Phy. ...
    • O3-type Na(Mn[subscript 0.25]Fe[subscript 0.25]Co[subscript 0.25]Ni[subscript 0.25])O[subscript 2]: A quaternary layered cathode compound for rechargeable Na ion batteries 

      Li, Xin; Wu, Di; Zhou, Yong-Ning; Liu, Lei; Yang, Xiao-Qing; e.a. (Elsevier, 2014-10)
      We report a new layered Na(Mn[subscript 0.25]Fe[subscript 0.25]Co[subscript 0.25]Ni[subscript 0.25])O[subscript 2] compound with O3 oxygen stacking. It delivers 180 mAh/g initial discharge capacity and 578 Wh/kg specific ...
    • O[superscript 6]-Methylguanine DNA lesions induce an intra-S-phase arrest from which cells exit into apoptosis governed by early and late multi-pathway signaling network activation 

      Noonan, Ericka M.; Shah, Dharini; Yaffe, Michael B.; Lauffenburger, Douglas A.; Samson, Leona D. (Royal Society of Chemistry, The, 2012-08)
      The O[superscript 6]-methylguanine (O[superscript 6]MeG) DNA lesion is well known for its mutagenic, carcinogenic, and cytotoxic properties, and understanding how a cell processes such damage is of critical importance for ...
    • Obesity accelerates Helicobacter felis-induced gastric carcinogenesis by enhancing immature myeloid cell trafficking and TH17 response 

      Ericksen, Russell E.; Rose, Shannon; Westphalen, Christoph Benedikt; Shibata, Wataru; Muthupalani, Sureshkumar; e.a. (BMJ Publishing Group, 2013-05)
      Objective: To investigate the role of obesity-associated inflammation and immune modulation in gastric carcinogenesis during Helicobacter-induced chronic gastric inflammation. Design: C57BL/6 male mice were infected ...
    • Obesity, Acute Kidney Injury, and Mortality in Critical Illness 

      Danziger, John; Chen, Ken P.; Mukamal, Kenneth J.; Lee, Joonwu; Feng, Mengling; e.a. (Wolters Kluwer - Lippincott Williams & Wilkins, 2016-02)
      Objectives: Although obesity is associated with risk for chronic kidney disease and improved survival, less is known about the associations of obesity with risk of acute kidney injury and post acute kidney injury mortality. ...
    • Obfuscating Conjunctions under Entropic Ring LWE 

      Brakerski, Zvika; Vaikuntanathan, Vinod; Wee, Hoeteck; Wichs, Daniel (Association for Computing Machinery, 2016-01)
      We show how to securely obfuscate conjunctions, which are functions f(x[subscript 1], . . . , x[subscript n]) = ∧[subscript i∈I] y[superscript i] where I ⊆ [n] and each literal y[subscript i] is either just x[subscript ...
    • Obfuscation, Learning, and the Evolution of Investor Sophistication 

      Carlin, Bruce Ian; Manso, Gustavo (Oxford University Press for the Society for Financial Studies, 2010-09)
      Investor sophistication has lagged behind the growing complexity of retail financial markets. To explore this, we develop a dynamic model to study the interaction between obfuscation and investor sophistica- tion in ...
    • Object decoding with attention in inferior temporal cortex 

      Zhang, Ying; Meyers, Ethan M.; Bichot, Narcisse Pascal; Serre, Thomas R.; Poggio, Tomaso A.; e.a. (National Academy of Sciences (U.S.), 2011-05)
      Recognizing objects in cluttered scenes requires attentional mechanisms to filter out distracting information. Previous studies have found several physiological correlates of attention in visual cortex, including larger ...
    • Object detectors emerge in Deep Scene CNNs 

      Zhou, Bolei; Khosla, Aditya; Lapedriza Garcia, Agata; Oliva, Aude; Torralba, Antonio (2015-05)
      With the success of new computational architectures for visual processing, such as convolutional neural networks (CNN) and access to image databases with millions of labeled examples (e.g., ImageNet, Places), the state of ...
    • Object placement as inverse motion planning 

      Holladay, Anne E.; Barry, Jennifer; Kaelbling, Leslie P.; Lozano-Perez, Tomas (Institute of Electrical and Electronics Engineers (IEEE), 2013-05)
      We present an approach to robust placing that uses movable surfaces in the environment to guide a poorly grasped object into a goal pose. This problem is an instance of the inverse motion planning problem, in which we solve ...
    • Object schemas for grounding language in a responsive robot 

      Hsiao, Kai-yuh; Tellex, Stefanie; Vosoughi, Soroush; Kubat, Rony Daniel; Roy, Deb K. (2008-12)
      An approach is introduced for physically grounded natural language interpretation by robots that reacts appropriately to unanticipated physical changes in the environment and dynamically assimilates new information pertinent ...
    • Object schemas for responsive robotic language use 

      Hsiao, Kai-yuh; Vosoughi, Soroush; Tellex, Stefanie; Kubat, Rony Daniel; Roy, Deb K. (Association for Computing Machinery, 2008)
      The use of natural language should be added to a robot system without sacrificing responsiveness to the environment. In this paper, we present a robot that manipulates objects on a tabletop in response to verbal interaction. ...
    • Object spreadsheets: a new computational model for end-user development of data-centric web applications 

      McCutchen, Richard Matthew; Itzhaky, Shachar; Jackson, Daniel (Association for Computing Machinery, 2016-11)
      Spreadsheets offer many advantages as the computational and data-storage engine for applications that are authored by end users. Paradoxically, however, their main failing in this regard is their computational model. Despite ...
    • Objective sequence-based subfamily classifications of mouse homeodomains reflect their in vitro DNA-binding preferences 

      Santos, Miguel A.; Turinsky, Andrei L.; Ong, Serene; Tsai, Jennifer; Berger, Michael F.; e.a. (Oxford University Press (OUP), 2010-08)
      Classifying proteins into subgroups with similar molecular function on the basis of sequence is an important step in deriving reliable functional annotations computationally. So far, however, available classification ...
    • Objective, comparative assessment of the penetration depth of temporal-focusing microscopy for imaging various organs 

      Rowlands, Christopher; Bruns, Oliver Thomas; Bawendi, Moungi G; So, Peter T. C. (SPIE, 2015-04)
      Temporal focusing is a technique for performing axially resolved widefield multiphoton microscopy with a large field of view. Despite significant advantages over conventional point-scanning multiphoton microscopy in terms ...