1,720,967 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Phenanthrolin-Guanidin-Hybride - Synthese und Verwendung als Liganden in der biomimetischen Kupfer-Komplexchemie
No full textIn der bioanorganischen Chemie ist die Synthese von biomimetischen Komplexverbindungen ein faszinierender Forschungsbereich. Auf diesem Gebiet wurde im Rahmen der vorliegenden Arbeit eine Vielzahl an neuen Übergangsmetall-Komplexen mit den entwickelten tetradentaten Phenanthrolin-Guanidin-Hybridliganden synthetisiert und charakterisiert. Ein besonderes Ziel war es, kupferbasierte Elektronentransfer-Modellsysteme nach dem Vorbild des ersten Elektronentransferschrittes von Cytochrom-c zum CuA-Zentrum der Cytochrom-c-Oxidase darzustellen. Der Aufbau von Elektronentransfersystemen erfolgt aus Elektronendonor und -akzeptor, die über einen Linker verknüpft sind. Zunächst stand daher das Design eines geeigneten Linker-Systems im Vordergrund. Dazu wurden die Phenanthrolin-Guanidin-Hybride synthetisiert, welche zwei voneinander differenzierte Stickstoff-Donorgruppen mit biomimetischem Potential aufweisen. Anschließend wurde eine große Anzahl an bisher unbekannten ein-, zwei- und vierkernigen Kupfer-, Nickel- und Zink-Komplexen synthetisiert, um die Koordinationseigenschaften der Linker zu untersuchen. Basierend auf diesen Kenntnissen konnten die Elektronentransfersysteme schrittweise aufgebaut werden. Im ersten Schritt wurde eine Ruthenium- bzw. Iridium-Donoreinheit auf der Phenanthrolin-Seite gebunden, die einen photoinduzierten Elektronentransport ermöglicht. Der zweite Schritt besteht in der Koordination von Kupfer(II)-Ionen auf der Guanidin-Seite. Mit dieser Strategie wurden mehrere Vorstufen ohne Akzeptor-Einheit sowie daraus resultierende heterobinukleare Komplexe synthetisiert. Dabei wurden drei Systeme erhalten, deren intramolekulare Elektronentransfereigenschaften mittels Fluoreszenz-Spektroskopie nachgewiesen werden konnten. Diese grundlegenden Resultate stellen Erkenntnisse zur Modellierung des ersten Schrittes der Elektronentransport-Kaskade innerhalb ...The synthesis of biomimetic coordination compounds is a particularly fascinating area of research in bioinorganic chemistry. Related to this research field, a plethora of new transition metal complexes including the developed tetradentate phenanthroline guanidine hybrid ligands were synthesized and characterized within the present work. Particular aim was the construction of copper based electron transfer model systems that mimic the first electron transfer of cytochrome c to the CuA center of the cytochrome c oxidase. The electron transfer systems consist of an electron donor and an acceptor connected by an organic linker. In order to obtain an appropriate linker system, the phenanthroline guanidine hybrids composed of two differentiated nitrogen donor functions with biomimetic potential were synthesized. A variety of hitherto unknown mono-, bi- and tetranuclear copper, nickel and zinc complexes were synthesized for a thorough investigation of the coordination properties of the linkers. Based on this knowledge, the electron transfer systems were composed step by step. In the first step a ruthenium, respectively an iridium donor unit, which allows a photo induced electron transport, is connected to the phenanthroline side of the linker. The second step comprises the coordination of copper(II) ions at the guanidine side. By this strategy, several precursors without an acceptor unit, as well as the resulting heterobinuclear complexes, were synthesized and fully characterized. Three systems were obtained whose intramolecular electron transfer properties have been verified by fluorescence spectroscopy. These fundamental results are innovative findings for modelling the first step of the electron transport cascade within the cytochrome c oxidase.von Jochen OrtmeyerTag der Verteidigung: 16.12.2016Universität Paderborn, Univ., Dissertation, 201
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
- …
