1,720,953 research outputs found

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    Distribution of forces on fasteners in light cladding systems under in-plane seismic actions

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    LAUREA MAGISTRALELo studio del comportamento sismico degli elementi non strutturali è un argomento di grande rilevanza e attualità per la ricerca scientifica nell’ambito dell’ingegneria strutturale; tali elementi in passato erano infatti considerati come semplici carichi agenti sulla struttura principale mentre in realtà sono soggetti ad eccitazioni sismiche addirittura superiori rispetto alla struttura principale in quanto risultano essere amplificate da quest’ultima. Grande importanza rivestono dunque gli elementi di fissaggio che devono essere adeguatamente progettati per trasferire le azioni alla struttura principale. Il comportamento dei sistemi di facciate leggere viene studiato attraverso una serie di test in scala reale, dove vengono applicate azioni sismiche simulate per valutare il comportamento globale del sistema, e di test in scala ridotta sui singoli elementi di fissaggio per valutare i meccanismi di trasmissione del carico negli ancoraggi. In particolare, vengono indagati gli effetti associati all’installazione in diversi materiali di base e all’utilizzo di diversi angolari di supporto. Dai risultati sperimentali è stato possibile definire dei modelli analitici semplificati per valutare il comportamento di una sistema di facciate in fase di progetto stimando le azioni agenti sui singoli ancoraggi. I dati sperimentali sono stati dunque confrontati con i risulti ottenuti attraverso i modelli analitici definiti in precedenza e quelli proposti da alcuni testi normativi per la definizione delle azioni sismiche e la progettazione di facciate ed elementi non strutturali. Si è infine valutato come un fattore di comportamento inferiore rispetto a quello proposto dalle normative risulterebbe più adeguato per rappresentare il comportamento di sistemi di facciate.Behavior of non structural elements subjected to seismic action is a great relevance topic in structural engineering research nowadays; in fact, these elements are subjected to the same dynamic excitation of bearing parts of structure. In particular, the connection between structural and non structural parts of the structure plays a critical role on safety of both elements; a safe design of the connections is essential to ensure an adequate level of safety for the expected actions during a seismic event. Cladding systems are analyzed through experimental tests performed both at real scale under simulated seismic loads and at fixing points local level, in order study the load transfer mechanism to the fasteners. In particular, the effects of different fixing points configurations are studied, considering different base materials, commonly used in real building application, and different supporting angle brackets; in addition, resonant behavior of façade system is studied on an specifically design cladding configuration. From experimental results analyses, models are defined in order to predict the behavior of façade system and evaluate seismic forces acting on fixing anchors. Finally, experimental data are compared with analytical results obtained with the defined models and building codes prescription for design of façade system; it is shown that a low behavior factor may be more suitable for represent the façade behavior and evaluate design seismic action

    Variations on the Author

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    “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

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    We 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

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    We 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

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We 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 Under Sail The Imagination of Jack London, 1893-1902

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    In 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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