1,720,965 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
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
Metrische Regularität und Approximation von verallgemeinerten Gleichungen mit Anwendungen in der optimalen Steuerung
Full text linkZiel dieser Arbeit ist es, Regularitätseigenschaften und Approximationen von verallgemeinerten Gleichungen zu untersuchen und auf optimale Steuerungsprobleme anzuwenden. Die Arbeit ist kumulativ und besteht aus vier veröffentlichten oder zur Veröffentlichung eingereichten Artikeln. Der erste untersucht die Konvergenzeigenschaften von Newton- und Newton-ähnlichen Verfahren zur Lösung verallgemeinerter Gleichungen. Klassische Ergebnisse verwenden die Eigenschaften der metrischen Regularität oder der starken metrischen Regularität der verallgemeinerten Gleichung im Lösungspunkt, um die Konvergenz der Newton-Methode zu zeigen, wenn der Anfangspunkt in einer Umgebung der Lösung liegt. Im Gegensatz dazu verwenden Theoreme vom Kantorovich-Typ Regularitätsbedingungen im Anfangspunkt und nicht im Lösungspunkt und erlauben daher eine a priori Konvergenzanalyse, die für praktische Zwecke nützlicher ist. Ein bekanntes Kantorovich-Theorem für verallgemeinerte Gleichungen erfordert, dass der einwertige Teil der verallgemeinerten Gleichungen differenzierbar mit Lipschitz-stetiger Ableitung ist. Hier wird eine neue, nicht glatte Version dieses Ergebnisses, mit linearer Konvergenzgeschwindigkeit bewiesen. Der zweite Artikel führt uniforme Versionen von metrischer Regularität und starker metrischer Regularität auf kompakten Mengen ein und verwendet diese, um zwei path-following schemes zum Auffinden einer Lösungstrajektorie einer differenziellen verallgemeinerten Gleichung (differential generalized equation), die gleichzeitig die Ideen des Euler/Heun-Verfahrens und des Newton-Verfahrens benutzen, zu analysieren. Der dritte Artikel untersucht die notwendige Optimalitätsbedingung für Lösungen von allgemeinen optimalen Steuerungsproblemen in Bolza-Form, die durch das Pontryagin-Maximum-Prinzip erhalten werden. Diese Bedingung kann als verallgemeinerte Gleichung in geeigneten Sobolev-Räumen umgeschrieben werden. Daher können Ergebnisse über das Newton-Verfahren aus dem ersten Teil zur Lösung dieser Probleme verwendet werden. Bekannte Ergebnisse, die Regularität zeigen, nehmen meist die Stetigkeit der optimalen Steuerung an, die für einige der grundlegendsten Bolza-Probleme nicht erfüllt ist, nämlich jenen, die in der Steuerung linear sind. Üblicherweise haben diese Probleme optimale Steuerungen vom Bang-Bang-Typ, d.h. sie enthalten eine endliche Anzahl von switching points, an denen die Steuerung unstetig ist. Unter schwachen Konvexitätsannahmen werden die metrische Subregularität sowie die starke bimetrische Regularität der verallgemeinerten Gleichungen dieser Probleme bewiesen und verwendet, um ein Ergebnis zur Konvergenz der Newton-Methode für diese Probleme zu zeigen. Der letzte Artikel beschäftigt sich mit der Gradientenprojektionsmethode, die unter anderem dazu verwendet werden kann, die linearisierten Probleme zu lösen, die auftreten, wenn das Newton-Verfahren auf die im letzten Teil erhaltenen verallgemeinerten Gleichungen angewendet wird. Ein neues Ergebnis zur Konvergenzgeschwindigkeit der Gradientenprojektionsmethode im Falle von Bang-Bang-Steuerungen wurde nachgewiesen und einige analytische und numerische Beispiele angegeben.The aim of this thesis is to study regularity properties and approximations of generalized equations and to apply them for optimal control problems. The thesis is cumulative and consists of four published or submitted for publication papers. The first one investigates the convergence properties of Newton-type methods for solving generalized equations. Classical results use the properties of metric regularity or strong metric regularity of the generalized equation at the solution to show convergence of the Newton method when the initial point is in a neighborhood of the solution. In contrast theorems of Kantorovich-type impose regularity conditions on the initial point rather than the solutions and therefore allow an a priori convergence analysis which is more useful for practical purposes. A known result of Kantorovich-type for generalized equations requires the single-valued part of the generalized equations to be differentiable with Lipschitz continuous derivative. A new nonsmooth version of this result showing linear convergence of the Newton method is proved. The second paper introduces uniform versions of metric regularity and strong metric regularity on compact sets and uses them to analyze two path-following schemes for tracking a solution trajectory of a differential generalized equation, which use ideas of the Euler/Heun method and the Newton method simultaneously. The third paper studies the necessary optimality condition for solutions of general optimal control problems in Bolza form obtained by the Pontryagin maximum principle. This condition can be rewritten as a generalized equation in suitable Sobolev spaces. Hence results about Newton-type methods from the first part can be used for solving these problems. Known results showing regularity mostly assume continuity of the optimal control which is not fulfilled for some of the most basic Bolza problems, namely those that are linear in control. Usually these problems have optimal controls of bang-bang type, i.e. they contain a finite number of switching points where the control is discontinuous. Under weak convexity assumptions metric subregularity as well as strong bimetric regularity of the generalized equations associated with these problems are proved and used to show a convergence result about the Newton method applied to such problems. The final paper deals with the gradient projection method which, among other things, can be used to solve the linearized problems which appear when using the Newton method on the generalized equations obtained in the previous part. A new result about the convergence speed of the gradient projection method in case of bang-bang controls is proved and some analytical and numerical examples are given
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
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