1,720,963 research outputs found

    Going Beyond Counting First Authors in Author Co-citation Analysis

    Get PDF
    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

    Get PDF
    “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

    Get PDF
    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

    Get PDF
    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

    No full text
    Nao informado

    Análisis sedimentológico y estratigráfico secuencial del Miembro Pilmatué de la Formación Agrio (Valanginiano superior-Hauteriviano inferior) en el norte de Neuquén : correlación afloramiento-subsuelo

    No full text
    Este trabajo final de licenciatura se centra en el análisis detallado de los depósitos sedimentarios de los Miembros Pilmatué y Avilé de la Formación Agrio en la localidad de Loma La Torre, ubicada 50 km al noroeste de Chos Malal, dentro de la provincia de Neuquén, con el objetivo principal de entender las características sedimentológicas y estratigráficas de la sección relevada y su vinculación con datos del subsuelo. Para ello se contó con un conjunto de datos del bloque Corraleras, aportado por Phoenix Global Resources. Un minucioso análisis de facies permitió identificar 10 litofacies y 10 microfacies, las cuales fueron agrupadas en 5 facies y tres asociaciones de facies (AF-1 a 3). Como resultado se interpretó a la asociación de facies 1 como un ambiente de rampa carbonática, interrumpida por los depósitos prodeltaícos de la asociación de facies 2. Por último, la asociación de facies 3, perteneciente al Miembro Avilé fue interpretada como depósitos fluvio-eólicos. A partir del análisis del apilamiento de facies y la identificación en el campo de superficies de valor estratigráfica secuencial (superficies transgresivas y superficies de máxima inundación) se identificaron tres secuencias depositacionales en el Miembro Pilmatué, caracterizadas por cambios en el ambiente sedimentario y litología, compuestos internamente por cortejos transgresivos y regresivos. Con el fin de comparar con bloques cercanos en el subsuelo, se tomaron mediciones de la radioactividad natural gamma con un escintilómetro espectral. El análisis de los contenidos de torio, potasio y uranio evidenció variaciones en las facies a lo largo del perfil estudiado, permitiendo discriminar entre las facies de rampa carbonática, donde los valores de rayos gamas está condicionada por las variaciones en el uranio, y las facies de prodelta, donde las variaciones del gamma están controladas por fluctuaciones del torio y el potasio, que reflejan variaciones en el aporte clástico. El Miembro Pilmatué fue analizado en el subsuelo (bloque Corraleras) mediante mapas estructurales, con el fin de comprender variaciones de espesores, y se generaron mapas de materia orgánica y reflectancia de vitrinita a nivel local. La correlación de los datos de gamma de los pozos exploratorios con el perfil revelado en el campo permitió proponer intervalos de interés, principalmente asociados a los intervalos transgresivos, donde el Miembro Pilmatué poseen altos valores de uranio y de materia orgánica, que reflejan condiciones de bajo contenido de oxígeno.Fil: Saavedra, Sebastian Erik. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina

    koamabayili/VECTRON-author-checklist: VECTRON author checklist

    No full text
    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

    No full text
    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
    corecore