3,368 research outputs found
Hyperconvexity and endpoints in T₀-quasi-metric spaces
No full textOver the last decades much progress has been made in the investigation of hyperconvexity in metric spaces. Recently Kemajou and others have published an article concerning hyperconvexity in T₀-quasi-metric spaces. In 1964 Isbell introduced and studied the concept of an endpoint of a metric space. The aim of this dissertation is to begin an investigation into hyperconvexity and endpoints of T₀-quasi-metric spaces. It starts off with basic definitions and some well-known properties of quasi-pseudometric spaces. We conclude by commencing an investigation into hyperconvexity and endpoints of T₀-quasi-metric spaces. In this dissertation several results obtained for hyperconvexity and endpoints in metric spaces are generalized to T₀-quasi-metric spaces, and some original results for hyperconvexity and endpoints of T₀-quasi-metric spaces are presented. We also discuss for a partially ordered set the connection between its Dedekind-MacNeille completion and the q-hyperconvex hull of its natural T₀-quasi-metric space
Compactly Generated Domain Theory
No full textWe propose compactly generated monotone convergence spaces as a well-behaved topological generalisation of directed-complete partial orders (dcpos). The category of such spaces enjoys the usual properties of categories of 'predomains' in denotational semantics. Moreover, such properties are retained if one restricts to spaces with a countable pseudobase in the sense of E. Michael, a fact that permits connections to be made with computability theory, realizability semantics and recent work on the closure properties of topological quotients of countably based spaces (qcb spaces). We compare the standard domain-theoretic constructions of products and function spaces on dcpos with their compactly generated counterparts, showing that these agree in important cases, though not in general
Interview with Lawrence T. Scott on Fragments of fullerenes and carbon nanotubes: designed synthesis, unusual reactions, and coordination chemistry, edited by Marina A. Petrukhina and Lawrence T. Scott
No full textAs discussed in this interview, Fragments of Fullerenes and Carbon Nanotubes brings together international experts in the field to discuss their findings related to all aspects of this fascinating, beautiful and fairly recently discovered form of carbon. Familiarly known as "buckyballs" for their similarity in appearance to the highly symmetrical geodesic domes of Buckminster Fuller (and, also, soccer balls), fullerenes, and the related carbon nanotubes, hold out the tantalizing possibility of offering true superconductivity, with the potential to allow us to more efficiently harness our current electricity supply and to power the photovoltaic devices that could decrease our dependence upon oil and electricity. Professor Scott, widely recognized for his early and continued ground-breaking work in the "rational" synthesis of C60 (a spherical fullerene composed of 60 carbon atoms), serves as co-editor of this volume (and co-author of Chapter 9), along with his colleague, and long-time collaborator in the field, Professor Marina Petrukhina (University of Albany). With a foreword by Sir Harold Kroto, awarded the 1996 Nobel Prize in Chemistry (with Robert F. Curl and Richard E. Smalley, for their discovery of this class of compounds), this volume covers a wide range of topics including current methods of synthesis, molecular geometry, and reactivity with metals, as well as descriptions of newer members of the fullerene family of molecules and related compounds, including open geodesic polyarenes, called fullerene fragments or buckybowls.Title supplied by cataloger
Dr. Scott Allison and Dr. Al Goethals – Faculty Author Interview
No full textDr. Scott Allison, Professor, Department of Psychology and Dr. Al Goethals, Professor, Jepson School of Leadership Studies discuss their recent book, Heroes: What They Do and Why We Need Them. Published by Oxford University Press, the book offers a stimulating tour of the psychology of heroism, shedding light on what heroism and villainy mean to most people and why heroes — both real people and fictional characters — are so vital to our lives. For more information on the book and project, connect to the “Heroes” blog
Scott Urban
No full textPhotograph of Scott Urban.
Scott Howard Urban (1961- ) is a poet, author, and educator in the Wilmington, NC area. He taught English at John T. Hoggard High School, and went to the University of North Carolina Wilmington to earn a Masters in School Administration. His works have been published in print magazines, horror anthologies, and online zines. He belonged to the Wilmington Writer's Forum and the Cape Fear Poetry Society, and currently lives out of state
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
Kraichnan-Leith-Batchelor similarity theory and two-dimensional inverse cascades
No full textWe study the scaling properties and Kraichnan-Leith-Batchelor (KLB) theory of forced inverse cascades in generalized two-dimensional (2D) fluids (-turbulence models) simulated at resolution . We consider (surface quasigeostrophic flow), (2D vorticity dynamics) and . The forcing scale is well-resolved, a direct cascade is present and there is no large-scale dissipation. Coherent vortices spanning a range of sizes, most larger than the forcing scale, are present for both and . The active scalar field for contains comparatively few and small vortices. The energy spectral slopes in the inverse cascade are steeper than the KLB prediction in all three systems. Since we stop the simulations well before the cascades have reached the domain scale, vortex formation and spectral steepening are not due to condensation effects; nor are they caused by large-scale dissipation, which is absent. One- and two-point pdfs, hyperflatness factors and structure functions indicate that the inverse cascades are intermittent and non-Gaussian over much of the inertial range for and , while the inverse cascade is much closer to Gaussian and non-intermittent. For the steep spectrum is close to that associated with enstrophy equipartition. Continuous wavelet analysis shows approximate KLB scaling () and () in the interstitial regions between the coherent vortices. Our results demonstrate that coherent vortex formation ( and ) and non-realizability () cause 2D inverse cascades to deviate from the KLB predictions, but that the flow between the vortices exhibits KLB scaling and non-intermittent statistics for and . The results will appear in \cite{BurgessEA2015}, which has been accepted to the \emph{Journal of Fluid Mechanics}
Birmingham News sleeve BN0015846
No full textCourtroom in Shelby County / "Wacky Wednesday" / Looking for general shot of the many oddballs and weirdos packed into the courtroom. Please don�t' concentrate on any small group of people / Shelby County courthouse / Scott Isbell / [Work order and identification sheet included
DNA fusion gene vaccination mobilizes effective anti-leukemic cytotoxic T lymphocytes from a tolerized repertoire
No full textThe majority of known human tumor-associated antigens derive from non-mutated self proteins. T cell tolerance, essential to prevent autoimmunity, must therefore be cautiously circumvented to generate cytotoxic T cell responses against these targets. Our strategy uses DNA fusion vaccines to activate high levels of peptide-specific CTL. Key foreign sequences from tetanus toxin activate tolerance-breaking CD4+ T cell help. Candidate MHC class Ibinding tumor peptide sequences are fused to the C terminus for optimal processing and presentation. To model performance against a leukemia-associated antigen in a tolerized setting, we constructed a fusion vaccine encoding an immunodominant CTL epitopederived from Friend murine leukemia virus gag protein (FMuLVgag) and vaccinated tolerant FMuLVgag-transgenic (gag-Tg) mice. Vaccination with the construct induced epitopespecificIFN-c-producing CD8+ T cells in normal and gag-Tg mice. The frequency and avidity of activated cells were reduced in gag-Tg mice, and no autoimmune injury resulted. However, these CD8+ T cells did exhibit gag-specific cytotoxicity in vitro and in vivo. Also, epitope-specific CTL killed FBL-3 leukemia cells expressing endogenous FMuLVgag antigen and protected against leukemia challenge in vivo. These results demonstrate a simple strategy to engage anti-microbial T cell help to activate epitope-specific polyclonal CD8+ T cell responses from a residual tolerized repertoire
Newspaper journalism and the changing publics of multimedia cities
No full textThis document is a rendition of the poster that was presented at the ESF conference ‘Cities and Media: Cultural Perspectives on Urban Identities in a Mediatized World’, held 25-29 October 2006 in Vadstena, Sweden. It comprises a brief survey of one major theme of Scott Rodger' doctoral work: the future orientations of editors and managers – the attempts made to project the political (and economic) standing of the Toronto Star into the present and near future ‘multimedia city’
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