1,721,109 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

    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

    Dissimilar friction stir welding of 2024-T3 and 2198-T8 aluminum alloys : influence of process parameters on microstructural properties, mechanical characteristics and corrosion resistance

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    L’industrie des transports cherche constamment à rendre ses structures plus résistantes tout en réduisant leur poids pour minimiser leur empreinte environnementale ou bien dans un but économique. Dans ce contexte, associer les alliages d’aluminium, possédant un excellent ratio poids-résistance mécanique, à des procédés d’assemblage innovants présente un très fort intérêt. Le soudage par friction malaxage (Friction Stir Welding – FSW) est un de ces procédés d’assemblage innovants. Il permet notamment de souder des tôles d’alliage d’aluminium de nuances réputées à faible indice de soudabilité et dans des configurations similaires ou dissimilaires. Plusieurs configurations de soudage FSW ont été investiguées dans la littérature, mais la configuration FSW 2024-T3/2198-T8, très attrayante pour l’industrie aéronautique, n’a jamais été étudiée. Dans cette étude, une analyse expérimentale de cette configuration de soudage est proposée pour la première fois. L’influence de l’évolution des vitesses d’avance Va et de rotation Vr de l’outil sur l’évolution des caractéristiques des soudures est quantifiée. Dans la fenêtre process choisie, l’évolution de la thermique est principalement influencée par celle de la vitesse d’avance Va tandis que le ratio de vitesses R = Va/Vr est un bon indicateur de la physionomie des soudures, de la formation des défauts et des performances en traction. Le champ de dureté, les contraintes résiduelles, les distorsions et la tenue en corrosion des assemblages soudés sont quant à eux peu influencés par l’évolution des vitesses de soudage. Ces travaux ont permis de documenter la formation de défauts internes au sein des soudures, mais aussi de mettre en évidence la relation entre vitesses de soudage et performances en traction et enfin de proposer une hypothèse : la présence d’un phénomène de protection cathodique au sein des soudures.The transportation industry is constantly looking for ways to make its structures stronger while reducing their weight to minimize their environmental footprint or for economic purposes. In this context, combining aluminum alloys, which have an excellent weight-strength ratio, with innovative assembly processes is of great interest. Friction Stir Welding (FSW) is one of these innovative joining processes. In particular, it allows the welding of aluminum alloy sheets with a low weldability index and in similar or dissimilar configurations. Several FSW configurations have been investigated in the literature, but the FSW 2024-T3/2198-T8 configuration, which is very attractive to the aerospace industry, has never been studied. In this study, an experimental analysis of this welding configuration is proposed for the first time. The influence of the evolution of the advancing speed Va and the rotation speed Vr of the tool on the evolution of the welding joint characteristics is quantified. In the chosen process window, the thermal evolution is mainly influenced by the advancing speed Va while the speed ratio R = Va/Vr is a good indicator of the weld appearance, defect formation and tensile performance. The hardness field, the residual stresses, the distortions and the corrosion resistance of the welded assemblies are little influenced by the evolution of the welding speeds. This work has allowed to document the formation of internal defects within the welds, but also to highlight the relationship between welding speeds and tensile performances and finally to propose a hypothesis: the presence of a cathodic protection phenomenon within the welds

    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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