1,720,953 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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 PDFWe 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 PDFWe 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
Effets périodiques induits dans les condensats de Bose-Einstein : oscillations de Bloch de solitons et fraction superfluide
No full textThis thesis investigates two phenomena in Bose-Einstein condensates related to periodicity: temporal in the first case and spatial in the second. The theory is reviewed and experiments are performed with ultracold atoms. More specifically, our experimental platform consists of a two-dimensional gas of rubidium atoms confined in a flat-bottom boxof adjustable geometry. Our setup provides high control over the gas, allowing us to engineer arbitrary potentials and spin-textures. The first investigation explores solitons, stable wave packets that maintain their shape while propagating. After reviewing theoretical foundations, the thesis presents the experimental realization of magnetic solitons. These appear as a localized spin component immersed in a bath of another component. When subjected to a constant force, these solitons exhibit oscillatory motion. This behavior is similar to an electron in a crystal performing Bloch oscillations, despite the absence of a periodic potential. This remarkable phenomenon stems, in both cases, from the inherent periodicity of the energy-momentum relationship. Experiments in both linear and ring geometries verify these oscillations. In the ring configuration, we demonstrate that the oscillations can generate quantized currents. This represents a novel mechanism for creating persistent currents in quantum fluids. The second study examines how spatial modulation affects superfluidity, the ability to exhibit frictionless flow. The thesis experimentally demonstrates that breaking translational symmetry in a Bose-Einstein condensate reduces the superfluid fraction. This confirms predictions from the pioneering work of Leggett. We use optical lattices to create controlled density modulations. The superfluid fraction is measured using two methods: through sound propagation and compressibility measurements, and via analysis of the density profile of the cloud. The results confirm the expected reduction of superfluid fraction. These findings have particular relevance for supersolids, a state of matter exhibiting superfluid properties coexisting with spontaneous spatial ordering.Cette thèse étudie deux phénomènes dans les condensats de Bose-Einstein liés à la périodicité : temporelle dans le premier cas et spatiale dans le second. La théorie est passée en revue et des expériences sont réalisées avec des atomes ultra-froids. Plus précisément, notre plateforme expérimentale consiste en un gaz bidimensionnel d'atomes de rubidium confinés dans une boîte à fond plat de géométrie ajustable. Notre dispositif offre un contrôle élevé sur le gaz, nous permettant de concevoir des potentiels et des textures de spin arbitraires. La première investigation explore les solitons, des paquets d'ondes stables qui maintiennent leur forme pendant la propagation. Après avoir revu les fondements théoriques, cette thèse présente la réalisation expérimentale de solitons magnétiques. Ceux-ci apparaissent comme une composante de spin localisée immergée dans un bain d'une autre composante. Lorsqu'ils sont soumis à une force constante, ces solitons présentent un mouvement oscillatoire. Ce comportement est similaire à celui d'un électron dans un cristal effectuant des oscillations de Bloch, malgré l'absence de potentiel périodique. Ce phénomène remarquable découle, dans les deux cas, de la périodicité inhérente à la relation énergie-impulsion. Des expériences dans des géométries linéaires et en anneau vérifient ces oscillations. Dans la configuration en anneau, nous démontrons que les oscillations peuvent générer des courants quantifiés. Cela représente un nouveau mécanisme pour créer des courants persistants dans les fluides quantiques. La seconde étude examine comment la modulation spatiale affecte la superfluidité, c'est-à-dire la capacité d'un fluide à s'écouler sans friction. La thèse démontre expérimentalement que briser la symétrie translationnelle dans un condensat de Bose-Einstein réduit la fraction superfluide. Cela confirme les prédictions des travaux pionniers de Leggett. Nous utilisons des réseaux optiques pour créer des modulations de densité contrôlées. La fraction superfluide est mesurée en utilisant deux méthodes :par la propagation du son et les mesures de compressibilité, et via l'analyse du profil de densité du nuage. Les résultats confirment la réduction attendue de la fraction superfluide. Ces découvertes ont une pertinence particulière pour les supersolides, un état de la matière présentant des propriétés superfluides coexistant avec un ordre spatial spontané
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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