1,720,966 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
Étude des instabilités transverses du faisceau dans le booster synchrotron de SOLEIL II
No full textSOLEIL est une source de lumière synchrotron française de troisième génération ouverte aux utilisateurs en 2008. Malgré ses performances impressionnantes en matière de fiabilité pour la livraison de faisceau de photons stables à haute luminosité au cours des 20 dernières années, elle fait l'objet d'un plan de mise à niveau appelé SOLEIL II vers une source de lumière de quatrième génération (4-GLS) pour répondre aux besoins des nouveaux domaines de recherche des décennies suivantes. L'émittance naturelle du faisceau d'électrons de SOLEIL II sera considérablement réduite à environ 83 pm rad, contre 3.9 pm rad dans la machine actuelle, pour atteindre la limite de diffraction dans le domaine des rayons X-mous et X-tendres.Pour atteindre cette émittance ambitieuse, des quadrupôles puissants doivent être utilisés, ce qui augmentera en conséquence la chromaticité naturelle de la machine. Des sextupôles forts doivent donc être utilisés pour une correction chromatique intense. Les ouvertures des chambres à vide devront alors être réduites afin de diminuer les entrefers magnétiques et de contribuer à la production d'un champ puissant. Une nouvelle conception de maille Multibend Acromat (MBA), qui regroupe un certain nombre d'aimants dans une seule cellule, est généralement optée pour une construction 4-GLS. Pour SOLEIL II, une 16BA et une hybride 7BA-4BA sont choisises respectivement pour le booster et l'anneau de stockage.Pour le booster, la nouvelle maille apportera de nombreux défis en matière d'instabilités collectives. Premièrement, la réduction de la taille de l'ouverture de la chambre à vide augmentera sûrement l'impédance de type paroie résistive, généralement le principal contributeur au budget d'impédance en raison de la longue circonférence de la machine. Une petite chambre à vide signifie également qu'un élément tel que le moniteur de position du faisceau (BPM) sera plus proche du faisceau, augmentant ainsi l'impédance géométrique. De plus, l'effet des sextupôles puissants sur les instabilités du faisceau n'est pas non plus certain. Pour ces raisons, les effets collectifs dans le booster doivent être étudiés en profondeur pour assurer le bon fonctionnement de la nouvelle installation.Cette thèse se concentre sur l'étude des instabilités transverses du faisceau dans le booster SOLEIL II, notamment les instabilités de type couplage des modes transverses, tête-queue, paroie résistive et faisceau-ion. Nous utilisons un modèle de rampe de booster nouvellement conçu qui prend en compte la variation des paramètres d'équilibre le long de la rampe, permettant une simulation approfondie du booster. La chromaticité le long de la rampe du booster SOLEIL actuel a également été mesurée pour la première fois depuis 2009 pour valider le modèle. Un modèle d'impédance préliminaire du booster SOLEIL II a été construit pour la première fois depuis le début du projet au cours de cette thèse. Le taux de croissance et/ou le seuil de chaque instabilité dans diverses situations sont déterminés, et le potentiel d'amortissement Landau est également évalué dans le cadre du nouveau booster. De plus, comme il est prévu d'utiliser le couplage bêtatron lors de l'extraction du booster, une question intéressante quant à la façon dont le couplage affectera les instabilités transverse monopaquet est également étudiée.SOLEIL is a French third-generation synchrotron light source opened to users in 2008. Despite its impressive performance in delivering stable high-brightness photon beams during the past 20 years, it is undergoing an upgrade plan called SOLEIL II towards a fourth-generation light source (4-GLS) to meet the needs of new research domains of the following decades. The SOLEIL II's electron beam natural emittance will be drastically reduced to about 83 pm rad, compared to 3.9 nm rad in the present machine, to reach the diffraction limit in the soft/tender X-ray range.To achieve this ambitious beam emittance, strong focusing magnets must be employed, which will increase the machine's natural chromaticity as a consequence. Strong sextupoles therefore must be used for intense chromatic correction. The vacuum chamber apertures will then have to be reduced in order to decrease the magnetic gaps and help for strong field production. The Multibend Acromat (MBA) lattice design which packs a number of magnets in one cell is usually opted for a 4-GLS construction. For SOLEIL II, a 16BA and a hybrid 7BA-4BA are chosen for the booster and the storage rings, respectively.For the booster, the new lattice is foreseen to bring many challenges regarding collective instabilities. First, the reduction in the vacuum chamber aperture size will surely increase the resistive-wall impedance, usually the largest contributor to the impedance budget due to the long machine circumference. A small vacuum chamber also means that an element like the beam position monitor (BPM) will be closer to the beam, thus increasing the geometric impedance. Moreover, the effect of the strong sextupoles on the beam instabilities is also not certain. For these reasons, the collective effects in the booster must be profoundly studied to ensure the good functioning of the new facility.This thesis focuses on the study of transverse beam instabilities in the SOLEIL II booster including the transverse mode coupling, head-tail, resistive-wall, and beam-ion instabilities. We utilize a newly designed booster ramp model that considers the variation of equilibrium parameters along the ramp, permitting a thorough simulation of the booster. The chromaticity along the current SOLEIL booster's ramp was also measured for the first time since 2009 to validate the model. The preliminary SOLEIL II booster impedance model was constructed for the first time since the beginning of the project during this thesis. The growth rate and/or the threshold of each instability in various situations are determined, and the potential of Landau damping is also assessed in the framework of the new booster. In addition, as the betatron coupling is planned to be employed at the booster's extraction, an interesting question as to how the coupling will affect the transverse single-bunch instabilities is also investigated
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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