Browsing FAS Scholarly Articles by Title
Now showing items 2577-2596 of 18292
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Competition and Innovation: An Inverted-U Relationship
(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
(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 Between Pairing and Ferromagnetic Instabilities in Ultracold Fermi Gases Near Feshbach Resonances
(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
(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 ... -
Competition Between Spin Density Wave Order and Superconductivity in the Underdoped Cuprates
(American Physical Society, 2009)We describe the interplay between \(d\)-wave superconductivity and spin density wave (SDW) order in a theory of the hole-doped cuprates at hole densities below optimal doping. The theory assumes local SDW order, and ... -
Competition between Superconductivity and Nematic Order: Anisotropy of Superconducting Coherence Length
(American Physical Society, 2012)We study the interplay between nematic order and superconductivity, motivated by a recent experiment on FeSe observing strongly distorted vortex shapes [Song et al. Science 332 1410 (2011)]. We show that the nematic order ... -
Competition between Surface Layering and Surface Phase Formation in Dilute Liquid Hg−Au Alloys
(American Chemical Society, 1999)We present temperature-dependent X-ray reflectivity measurements of liquid Hg alloyed with 0.06−0.20 atom % Au. At low Au concentrations, we find temperature-dependent surface-induced layering similar to that observed in ... -
Competition between triplet superconductivity and antiferromagnetism in quasi-one-dimensional electron systems
(American Physical Society (APS), 2004)We investigate the competition between antiferromagnetism and triplet superconductivity in quasi-one-dimensional electron systems. We show that the two order parameters can be unified using a SO(4) symmetry and demonstrate ... -
Competition drives cooperation among closely related sperm of deer mice
(Nature Publishing Group, 2010)Among the extraordinary adaptations driven by sperm competition is the cooperative behaviour of spermatozoa. By forming cooperative groups, sperm can increase their swimming velocity and thereby gain an advantage in intermale ... -
Competition for Attention
(National Bureau of Economic Research, 2013)We present a model of market competition and product differentiation in which consumers' attention is drawn to the products' most salient attributes. Firms compete for consumer attention via their choices of quality and ... -
Competition, Financial Discipline and Growth
(Oxford University Press (OUP), 1999)This paper develops a general equilibrium model of technological adoption in an economy populated by 'satisficing' entrepreneurs whose main objective is to minimise innovative effort while keeping the firm alive. In such ... -
Competition, Imitation and Growth with Step-by-Step Innovation
(Oxford University Press (OUP), 2001)Is more intense product market competition and imitation good or bad for growth? This question is addressed in the context of an endogenous growth model with “step-by-step” innovations, in which technological laggards must ... -
Competition-Colonization Dynamics in an RNA Virus
(National Academy of Sciences, 2010)During replication, RNA viruses rapidly generate diverse mutant progeny which differ in their ability to kill host cells. We report that the progeny of a single RNA viral genome diversified during hundreds of passages in ... -
Compiling Polymorphism Using Intensional Type Analysis
(Association for Computing Machinery, 1995)Traditional techniques for implementing polymorphism use a universal representation for objects of unknown type. Often, this forces a compiler to use universal representations even if the types of objects are known. We ... -
Complementarities between Outsourcing and Foreign Sourcing
(American Economic Association, 2005) -
Complementarity and stability conditions
(Elsevier BV, 2017)We discuss the issue of complementarity between the confining phase and the Higgs phase for gauge theories in which there are no light particles below the scale of confinement or spontaneous symmetry breaking. We show with ... -
Complementary Rather than Contradictory: Diversity and Excellence in Peer Review and Admissions in American Higher Education
(Taylor & Francis, 2009)Diversity is largely accepted as a positive value in American society. Nevertheless, policies to encourage diversity, e.g. affirmative action, language policies and legalising illegal immigrants, are still largely disputed, ... -
Complementary strand relocation may play vital roles in RecA-based homology recognition
(Oxford University Press, 2012)RecA-family proteins mediate homologous recombination and recombinational DNA repair through homology search and strand exchange. Initially, the protein forms a filament with the incoming single-stranded DNA (ssDNA) bound ... -
Complementary targeting of liposomes to IL-1? and TNF-? activated endothelial cells via the transient expression of VCAM1 and E-selectin
(Elsevier BV, 2011)Inflammation is in part defined by the transient upregulation of cell adhesion molecules on the surface of endothelial cells (ECs) in response to cytokines. We hypothesized that liposomes with a complementary surface ... -
A Complete Generic Phylogeny of Malpighiaceae Inferred from Nucleotide Sequence Data and Morphology
(Botanical Society of America, 2010)Premise of the study: The Malpighiaceae include ∼1300 tropical flowering plant species in which generic definitions and intergeneric relationships have long been problematic. The goals of our study were to resolve relationships ...