1,720,997 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Nanomatériaux hybrides. Modulation des propriétés de SPIONs et de nanoplaquettes de CdSe par fonctionnalisation moléculaire de surface
No full textCette thèse est pluridisciplinaire, située à l'interface entre la chimie des nanomatériaux et la chimie moléculaire. Elle vise l’obtention de propriétés physico-chimiques remarquables grâce à la conception de nouveaux nano-objets hybrides construits par greffage de systèmes moléculaires sur des nanoparticules inorganiques. Il s'agit soit d'obtenir une synergie des propriétés de ces briques (molécules et nanoparticules) exprimée par l'hybride, soit d'exprimer une propriété moléculaire à l'échelle du (nano-)matériau. La première partie du sujet concerne la modulation des propriétés magnétiques des nanoparticules de maghémite superparamagnétiques. Ce type de particules est attractif pour des applications potentielles en biomédecine ou dans le stockage de données à ultra haute densité. La surface de ces nanoparticules a été fonctionnalisée par condensation de complexes de Co(II), de Mn(II), de Ni(II) et de Zn(II). Cette fonctionnalisation a été réalisée en conservant la stabilité colloïdale et a induit une importante augmentation de l'anisotropie magnétique des nanoparticules, et donc de leur champ coercitif et de leur température de blocage. Nous avons également mené une série d'études en spectroscopie d’absorption des rayons X (XAS) et dichroïsme magnétique circulaire des rayons X (XMCD) à l’aide du rayonnement synchrotron pour étudier la nature des interactions magnétiques entre les complexes et les nanoparticules. La deuxième partie du sujet concerne la décoration de nanoplaquettes de CdSe luminescentes par des molécules chirales. L’objectif de ce travail d’utiliser des complexes de coordination chiraux pour assembler les nanoplaquettes en empilements de chiralité contrôlée, luminescents et magnétiques. Compte tenu de la nature magnétique du centre métallique et de la coopérativité des propriétés optiques observée dans les empilements de nanoplaquettes, de tels assemblages ouvrent la voie à l’étude des propriétés magnéto-optiques des matériaux hybrides multi-échelles. Dans un premier temps, nous avons utilisé différents types de ligands chiraux afin de déterminer la nature de la liaison particule/molécule et les conditions de fonctionnalisation qui permettent le transfert de chiralité du ligand vers les plaquettes tout en conservant leurs propriétés de luminescence. Grâce à des ligands dérivés de l’acide tartrique, nous avons obtenu des systèmes chiraux et luminescents caractérisés par des facteurs d'anisotropie élevés. Nous avons ensuite assemblé ces nanoplaquettes fonctionnalisées en superstructures. Enfin, des résultats préliminaires ont été obtenus avec différents complexes de coordination et sont également présentés dans le manuscrit.This research subject is multidisciplinary, at the interface between the chemistry of nanomaterials and molecular chemistry. We aim to obtain remarkable physico-chemical properties through the design of new hybrid nano-objects built by grafting molecular systems onto inorganic nanoparticles. It is a question of either obtaining a synergy of the properties of these bricks (molecules and nanoparticles) expressed by the hybrid, or of expressing a molecular property at the scale of the (nano-)material. The first part of the subject concerns the modulation of the magnetic properties of superparamagnetic maghemite nanoparticles. These type of particles are attractive in biomedicine or in ultra-high density data storage applications. The surface of these nanoparticles has been functionalised by condensation of Co(II), Mn(II), Ni(II) and Zn(II) complexes. This functionalisation has been performed while maintaining colloidal stability and it has induced a significant increase of the magnetic anisotropy of the nanoparticles, and therefore of their coercive field and their blocking temperature. We have also conducted a series of studies in X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) using synchrotron radiation to investigate the nature of the magnetic interactions between the complexes and nanoparticles. The second part of the subject deals with the decoration of luminescent CdSe nanoplatelets by chiral molecules. The objective of this work is to use chiral coordination complexes to assemble the nanoplatelets into luminescent and magnetic stacks of controlled chirality. Considering the magnetic nature of the metallic center and the cooperativity of the optical properties observed in stacks of nanoplatelets, such assemblies open the way to the study of the magneto-optical properties of multi-scale hybrid materials. First, we used different types of chiral ligands to determine the nature of the particle/molecule bond and the functionalization conditions that allow the transfer of chirality from the ligand to the platelets while maintaining their luminescence properties. Thanks to tailored ligands derived from tartaric acid, we obtained chiral and luminescent systems characterized by high anisotropy factors. We then assembled these functionalized nanoplatelets into superstructures. Finally, preliminary results have been obtained with different coordination complexes and are also presented in the manuscript
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
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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