Now showing items 8376-8395 of 52701

    • Competing Fe(II)-Induced Mineralization Pathways of Ferrihydrite 

      Hansel, Colleen; Benner, Shawn G.; Fendorf, Scott (American Chemical Society, 2005)
      Owing to its high surface area and intrinsic reactivity, ferrihydrite serves as a dominant sink for numerous metals and nutrients in surface environments and is a potentially important terminal electron acceptor for microbial ...
    • Competing for Capital: The Diffusion of Bilateral Investment Treaties, 1960-2000 

      Elkins, Zachary; Guzman, Andrew T.; Simmons, Beth (Cambridge University Press, 2006)
      Over the past forty-five years, bilateral investment treaties (BITs) have become the most important international legal mechanism for the encouragement and governance of foreign direct investment. The proliferation of BITs ...
    • Competing for Endorsements 

      Grossman, Gene M; Helpman, Elhanan (1998-05)
      Endorsements are a simple language for communication between interest-group leaders and group members. The members, who share policy concerns, may not perfectly understand where their interests lie on certain issues. If ...
    • Competing Globally: Institutional Voids in Emerging Markets 

      Ma, Juan (2016-05-13)
      This dissertation addresses institutional development in emerging economies, as well as its implications on firm strategy. Specifically, as emerging markets are characterized by “institutional voids”, that is, the absence ...
    • Competing Matchmakers: An Experimental Analysis 

      Hossain, Tanjim; Minor, Dylan Blu; Morgan, John (INFORMS, 2011)
      Platform competition is ubiquitous, yet platform market structure is little understood. Theory models typically suffer from equilibrium multiplicity—platforms might coexist or the market might tip to either platform. We ...
    • Competing Mobile Network Game: Embracing antijamming and jamming strategies with reinforcement learning 

      Gwon, Youngjune Lee; Dastangoo, Siamak; Fossa, Carl; Kung, H. T. (IEEE, 2013)
      We introduce Competing Mobile Network Game (CMNG), a stochastic game played by cognitive radio networks that compete for dominating an open spectrum access. Differentiated from existing approaches, we incorporate both ...
    • Competing orders in a magnetic field: Spin and charge order in the cuprate superconductors 

      Zhang, Ying; Demler, Eugene A.; Sachdev, Subir (American Physical Society (APS), 2002)
      We describe two-dimensional quantum spin fluctuations in a superconducting Abrikosov flux lattice induced by a magnetic field applied to a doped Mott insulator. Complete numerical solutions of a self-consistent large- N ...
    • Competing orders in thermally fluctuating superconductors in two dimensions 

      Sachdev, Subir; Demler, Eugene A. (American Physical Society (APS), 2004)
      We extend recent low-temperature analyses of competing orders in the cuprate superconductors to the pseudogap regime where all orders are fluctuating. A universal continuum limit of a classical Ginzburg-Landau functional ...
    • Competing Presumptions About Statutory Coherence 

      Manning, John Francis (Fordham Law Review, 2006)
    • Competing with Privacy 

      Casadesus-Masanell, Ramon; Hervas-Drane, Andres (INFORMS, 2014-10-24)
      We analyze the implications of consumer privacy for competition in the marketplace. We consider a market where firms set prices and disclosure levels for consumer information, and consumers observe both before deciding ...
    • Competition and Coexistence in Yeast Experimental Evolution 

      Frenkel, Evgeni Mikhailovich (2016-05-19)
      Natural selection gives rise to biodiversity by purging the less-fit among variants that are too similar (a principle known as character displacement), but to predict how fit or different an organism needs to be to survive ...
    • Competition and Cooperation Between Multiple Reinforcement Learning Systems 

      Kool, Wouter; Cushman, Fiery; Gershman, Samuel (Elsevier, 2018)
      Most psychological research on reinforcement learning has depicted two systems locked in battle for control of behavior: a flexible but computationally expensive “model-based” system and an inflexible but cheap “model-free” ...
    • Competition and cooperation in one-dimensional stepping-stone models 

      Korolev, K.; Nelson, David R. (American Physical Society, 2011)
      Mutualism is a major force driving evolution and sustaining ecosystems. Although the importance of spatial degrees of freedom and number fluctuations is well known, their effects on mutualism are not fully understood. With ...
    • Competition and Innovation: An Inverted-U Relationship 

      Aghion, Philippe; Bloom, Nick; Blundell, Richard; Griffith, Rachel; Howitt, Peter (MIT Press, 2005)
      This paper investigates the relationship between product market competition and innovation. We find strong evidence of an inverted-U relationship using panel data. We develop a model where competition discourages laggard ...
    • Competition and Productivity Growth in South Africa 

      Aghion, Philippe; Braun, Matias; Fedderke, Johannes (Blackwell Publishing, 2008)
      This article shows that mark-ups are significantly higher in South African manufacturing industries than they are in corresponding industries worldwide. We test for the consequences of this low-level of product market ...
    • Competition and Productivity Growth in South Africa 

      Aghion, Philippe; Braun, Matias; Fedderke, Johannes (Center for International Development at Harvard University, 2006-08)
      Using three different panel data sets, the authors show: (i) that mark-ups are significantly higher in South African manufacturing industries than they are in corresponding industries worldwide; (ii) that competition policy ...
    • Competition and Selection in Health Insurance Markets 

      Pelech, Daria (2015-05-08)
      Competition in US health insurance markets is low and has declined in recent years. Insufficient competition is often assumed to increase plan premiums or decrease benefit quality, but the latter has been difficult to ...
    • Competition Between Pairing and Ferromagnetic Instabilities in Ultracold Fermi Gases Near Feshbach Resonances 

      Pekker, David; Babadi, Mehrtash; Sensarma, Rajdeep; Zinner, Nikolaj; Pollet, Lode; Zwierlein, Martin; Demler, Eugene A. (American Physical Society, 2011)
      We study the quench dynamics of a two-component ultracold Fermi gas from the weak into the strong interaction regime, where the short time dynamics are governed by the exponential growth rate of unstable collective modes. ...
    • The competition between simple and complex evolutionary trajectories in asexual populations 

      Ochs, Ian E; Desai, Michael M (BioMed Central, 2015)
      Background: On rugged fitness landscapes where sign epistasis is common, adaptation can often involve either individually beneficial “uphill” mutations or more complex mutational trajectories involving fitness valleys or ...