1,720,959 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
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
Preparation and application areas of magnetic mesoporous TiO2 photocatalysts
No full textOrganik boyarmaddelerin neden olduğu su kirliliği insan sağlığı ve doğal çevreyi tehdit eden ciddi bir problem olmuştur. Metilen Mavisi (MM) ve Rodamin B (RB) gibi sıklıkla kullanılan katyonik boyalar, kompleks aromatik yapıya sahiptirler ve zararsız ürünlere parçalanmaları oldukça zordur. Bu çalışmada, MM ve RB boyaları için iyi bir fotokatalitik bozunma performansı gösteren ve manyetik olarak ayrılabilen Fe3O4-SiO2-mezoTiO2 nanokompoziti hazırlanmıştır. Bu amaçla, ilk olarak birlikte çöktürme yöntemi kullanılarak süperparamanyetik Fe3O4 nanoparçacıkları sentezlenmiştir. İkinci olarak bu Fe3O4 nanoparçacıklarının hava ile oksitlenmesini ve TiO2’nin fotokatalitik performansının azalmasını önlemek için Fe3O4 nanoparçacıklarının etrafında Stöber yöntemiyle bazik ortamda SiO2 ara katmanı oluşturulmuştur. Son olarak silika kaplı nanoparçacıklar yüzey aktif madde şablonu kullanılarak sol-jel sentez yöntemiyle mezogözenekli TiO2 tabakası ile kaplanmıştır. Elde edilen Fe3O4, Fe3O4-SiO2 ve Fe3O4-SiO2-mezoTiO2 örnekleri, X-Işını Kırınımı (XRD), Taramalı Elektron Mikroskobu (SEM), Titreşimli Örnek Manyetometresi (VSM), Fourier Transformu Kırmızı Ötesi Spektroskopisi (FT-IR), N2-adsorpsiyon/desorpsiyon teknikleriyle yapısal, morfolojik ve manyetik özellikleri açısından karakterize edilmiştir. Oda sıcaklığında, UV ışıması altında (368 nm), doğal çözelti pH'larında, 50 mg fotokatalizör ilavesi ile MM ve RB organik boyarmaddeleri 120 dk süre sonunda sırasıyla % 97,52 ve % 99,06 fotobozunmaya uğramıştır. Her iki boya için de reaksiyon hız sabitleri belirlenmiş ve yalancı birinci dereceden hız eşitliğine uyduğunu gösteren iyi bir doğrusallık sergilemiştir. Fotokatalizörün reaksiyon mekanizması bir dizi radikal tutucu etkisi incelenerek MM ve RB organik boyarmaddeleri için açıklanmıştır. Ayrıca, mıknatısla ayrılabilen ve geri kazanılabilen manyetik mezogözenekli TiO2 fotokatalizörü, fotokatalitik aktivite kaybı olmaksızın üç kez tekrar kullanılabilmiştir.Water pollution caused by organic dyestuffs has become a serious problem threatening human health and the natural environment. Frequently used cationic dyes such as Methylene Blue (MB) and Rhodamine B (RhB) have complex aromatic structures and are difficult to degrade into harmless products. In this study, a magnetically separable Fe3O4-SiO2-mesoTiO2 nanocomposite with good photocatalytic degradation performance was prepared for MB and RhB dyes. Fort his purpose, firstly, superparamagnetic Fe3O4 nanoparticles were synthesized using the co-precipitation method. Secondly, SiO2 interlayer was formed around the Fe3O4 nanoparticles by the Stober method in basic medium to prevent the oxidation of these Fe3O4 nanoparticles by air and the reduction of the photocatalytic performance of TiO2. Finally, silica coated nanoparticles were coated with mesoporous TiO2 layer by sol-gel synthesis method using surfactant template. The structural, morphological and magnetic properties of the Fe3O4, Fe3O4-SiO2 and Fe3O4-SiO2-mesoTiO2 samples were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Vibrating Sample Magnetometry (VSM), Infrared Fourier Transform Spectroscopy (FT-IR), N2-adsorption/desorption techniques. At room temperature, under UV irradiation (368 nm), at natural solution pH, with the addition of 50 mg of photocatalyst, MB and RhB decomposed to 97,52% and 99,06%, respectively, after 120 min. The reaction rate constants for both dyes were determined and exhibited good linearity, which indicates fitting of the pseudo-first order rate equation. The reaction mechanism of the photocatalyst is explained for MB and RhB organic dyestuffs by examining a series of radical scavenging effects. Moreover, the magnetic mesoporous TiO2 photocatalyst, which can be separated and recovered with an external magnet, could be reused three times without loos of photocatalytic activity
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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