Now showing items 31231-31250 of 34506

    • Task Allocation in Ant Colonies 

      Cornejo, Alejandro; Dornhaus, Anna; Nagpal, Radhika; Lynch, Nancy Ann (Springer-Verlag, 2014-08)
      In this paper we propose a mathematical model for studying the phenomenon of division of labor in ant colonies. Inside this model we investigate how simple task allocation mechanisms can be used to achieve an optimal ...
    • The “task approach” to labor markets: an overview 

      Autor, David H. (Springer-Verlag Berlin Heidelberg, 2013-02)
      An emerging literature argues that changes in the allocation of workplace “tasks” between capital and labor, and between domestic and foreign workers, has altered the structure of labor demand in industrialized countries ...
    • Task Dependence of Visual and Category Representations in Prefrontal and Inferior Temporal Cortices 

      McKee, Jillian L.; Riesenhuber, Maximilian; Miller, Earl K.; Freedman, David J. (Society for Neuroscience, 2014-11)
      Visual categorization is an essential perceptual and cognitive process for assigning behavioral significance to incoming stimuli. Categorization depends on sensory processing of stimulus features as well as flexible cognitive ...
    • Task search in a human computation market 

      Chilton, Lydia B.; Horton, John J.; Miller, Robert C.; Azenkot, Shiri (Association for Computing Machinery (ACM), 2010-07)
      In order to understand how a labor market for human computation functions, it is important to know how workers search for tasks. This paper uses two complementary methods to gain insight into how workers search for tasks ...
    • A task-based parallelism and vectorized approach to 3D Method of Characteristics (MOC) reactor simulation for high performance computing architectures 

      He, Tim; Siegel, Andrew R.; Tramm, John Robert; Gunow, Geoffrey Alexander; Smith, Kord S.; e.a. (Elsevier, 2016-01)
      In this study we present and analyze a formulation of the 3D Method of Characteristics (MOC) technique applied to the simulation of full core nuclear reactors. Key features of the algorithm include a task-based parallelism ...
    • Task-Dependent Changes in Short-Term Memory in the Prefrontal Cortex 

      Warden, Melissa R.; Miller, Earl K. (Society for Neuroscience, 2010-11)
      The prefrontal cortex (PFC) is important for flexible, context-dependent behavioral control. It also plays a critical role in short-term memory maintenance. Though many studies have investigated these functions independently, ...
    • Task-dependent representations of stimulus and choice in mouse parietal cortex 

      Sur, Mriganka; Pho, Gerald N; Goard, Michael; Woodson, Jonathan; Crawford, Benjamin C (Nature Publishing Group, 2018-07)
      The posterior parietal cortex (PPC) has been implicated in perceptual decisions, but whether its role is specific to sensory processing or sensorimotor transformation is not well understood. Here, we trained mice to perform ...
    • Task-Driven Tactile Exploration 

      Kaelbling, Leslie P.; Lozano-Perez, Tomas; Hsiao, Kaijen (Robotics: Science and Systems Conference, 2010-01)
      This paper presents a decision-theoretic approach to problems that require accurate placement of a robot relative to an object in the world, including grasping and insertion. The decision process is applied to a robot ...
    • Task-space setpoint control of robots with dual task-space information 

      Cheah, C. C.; Slotine, Jean-Jacques E. (Institute of Electrical and Electronics Engineers, 2009-07)
      In conventional task-space control problem of robots, a single task-space information is used for the entire task. When the task-space control problem is formulated in image space, this implies that visual feedback is used ...
    • The Tasmanian Devil Transcriptome Reveals Schwann Cell Origins of a Clonally Transmissible Cancer 

      Murchison, Elizabeth P.; Tovar, Cesar; Hsu, Arthur; Bender, Hannah S.; Kheradpour, Pouya; e.a. (American Association for the Advancement of Science (AAAS), 2009-12)
      The Tasmanian devil, a marsupial carnivore, is endangered because of the emergence of a transmissible cancer known as devil facial tumor disease (DFTD). This fatal cancer is clonally derived and is an allograft transmitted ...
    • Taurine in drinking water recovers learning and memory in the adult APP/PS1 mouse model of Alzheimer's disease 

      Kim, Hye Yun; Kim, Hyunjin V.; Yoon, Jin H.; Kang, Bo Ram; Cho, Soo Min; e.a. (Nature Publishing Group, 2014-12)
      Alzheimer's disease (AD) is a lethal progressive neurological disorder affecting the memory. Recently, US Food and Drug Administration mitigated the standard for drug approval, allowing symptomatic drugs that only improve ...
    • Tautomerism provides a molecular explanation for the mutagenic properties of the anti-HIV nucleoside 5-aza-5,6-dihydro-2'-deoxycytidine 

      Li, Deyu; Fedeles, Bogdan I.; Singh, Vipender; Peng, Chunte Sam; Silvestre, Katherine J.; e.a. (National Academy of Sciences (U.S.), 2014-07)
      Viral lethal mutagenesis is a strategy whereby the innate immune system or mutagenic pool nucleotides increase the error rate of viral replication above the error catastrophe limit. Lethal mutagenesis has been proposed as ...
    • Tax Designs and Tax Attitudes 

      Campbell, Andrea (Walter de Gruyter GmbH, 2018-10)
      The watchword of the policy feedbacks approach to political analysis - that politics shapes policy - suggests that the way in which taxes are designed may influence how the public feels about various levies: their support ...
    • The Tax Exclusion for Employer-Sponsored Health Insurance 

      Gruber, Jonathan (National Tax Association, 2011-06)
      This paper reviews the issues raised by and the impacts of the tax exclusion for employer-sponsored health insurance. After reviewing the arguments for and against this policy, I present evidence from a micro-simulation ...
    • Tax Farming Redux: Experimental Evidence on Performance Pay for Tax Collectors 

      Khan, Adnan Q.; Khwaja, Asim I.; Olken, Benjamin (Oxford University Press, 2015-10)
      Performance pay for tax collectors has the potential to raise revenues, but might come at a cost if it increases the bargaining power of tax collectors vis-à-vis taxpayers. We report the first large-scale field experiment ...
    • Tax Sensitivity and Home State Preferences in Internet Purchasing 

      Ellison, Glenn; Ellison, Sara F. (American Economic Association, 2009-08)
      Data on memory modules sales are used to explore aspects of e-retail demand. Aggregate sales are examined in state-level regressions. Discrete choice techniques are used to examine (incomplete) hourly sales data from a ...
    • The Taxation of Superstars 

      Scheuer, Florian; Werning, Ivan (Oxford University Press, 2016-11)
      How are optimal taxes affected by superstar phenomena? To answer this question, we extend the Mirrlees model to incorporate an assignment problem in the labor market that generates superstar effects. Perhaps surprisingly, ...
    • Taxes and Pensions 

      Diamond, Peter A. (Southern Economic Association, 2009-07)
      Pension benefit rules depend on individual history far more than taxes do, and age plays a much larger role in pension determination than in tax determination. Apart from some simulation studies, theoretical studies of ...
    • Taxi-Aware Map: Identifying and Predicting Vacant Taxis in the City 

      Phithakkitnukoon, Santi; Veloso, Marco; Bento, Carlos; Biderman, Assaf; Ratti, Carlo (Springer-Verlag, 2010)
      Knowing where vacant taxis are and will be at a given time and location helps the users in daily planning and scheduling, as well as the taxi service providers in dispatching. In this paper, we present a predictive model ...
    • The taxman cometh: Does tax uncertainty affect corporate cash holdings? 

      Hanlon, Michelle; Maydew, Edward L.; Saavedra, Daniel (Springer-Verlag, 2017-05)
      We examine whether firms hold more cash in the face of tax uncertainty. Because of gray areas in the tax law and aggressive tax avoidance, the total amount of tax that a firm will pay is uncertain at the time it files its ...