1,720,969 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
Influence of the crystallization firing process on the adhesion of a glass ceramic after hydrothermal aging
No full textEsse estudo avaliou a a influência do processo de queima de cristalização e degradação hidrotérmica na resistência união entre vitrocerâmicas à base de (di)silicato de lítio e o cimento resinoso. Foram confeccionados 90 blocos cerâmicos: 60 blocos de silicato de lítio reforçado por zircônia – Celtra Duo (Dentisply-Sirona, Bensheim, Alemanha) e 30 em dissilicato de lítio - IPS e.max CAD (Ivoclar Vivadent Ltda, Schaan, Liechtenstein), nas dimensões 13 x 15 x 1,5 mm. As amostras foram divididas em 6 grupos, com e sem envelhecimento, de forma randomizada: Celtra S – Celtra sem queima; Celtra C – Celtra com queima; E – IPS E.max CAD; Celtra SE – Celtra sem queima e com envelhecimento; Celtra CE – Celtra com queima e com envelhecimento; EE – IPS E.max CAD com envelhecimento. A superfície das cerâmicas foram condicionadas com ácido fluorídrico 5% durante 30 segundos (Celtra Duo) e 20 segundos (IPS e.max), em seguida foi feita a aplicação do agente de união silano Monobond-N (Ivoclar Vivadent, Schaan, Liechtenstein). Para cada bloco, foram confeccionados 6 cilindros de 1 mm de diametro e 2 mm de altura de cimento resinoso para o teste de microcisalhamento. O teste de microcisalhamento foi realizado na máquina de ensaio universal DL 1000 (EMIC, São José dos Pinhais, Paraná, Brasil), com célula de carga de 50 kgf e velocidade de 0,5 mm/min. Os tipos de falhas foram analisados atraves do estereomicroscópico (Microscopia óptica ZEISS MC 80 DX) e microscopio eletrônico de varredura (Jeol-JSM-T330A- Scanning Microscope-Japan). Foi realizado o teste de rugosidade (Ra e Rz) e microscopia eletrônica de varredura (MEV) das superfícies cerâmicas. Os valores de resistência de união (n=10) e rugosidade (n=10) foram submetidos à análise estatística descritiva (média e desvio padrão) e inferencial, mediante o teste paramétrico ANOVA 2-fatores, seguido do teste de Tukey (α=0,05). O teste de microcisalhamento indicou que a condição sem cristalização apresentou resultados superiores aos demais grupos onde mostrou diferença estatisticamente significante (p=0,000). O envelhecimento hidrotérmico foi responsável pela diminuição dos valores de resistência de união para todos os grupos estudados. Conclui-se que o processo de queima de cristalização e degradação hidrotérmica geraram dimunição da resistência adesiva entre esses dois substratos.This study evaluated the influence of the crystallization firing process and hydrothermal degradation on the bond strength between lithium (di)silicatebased glass-ceramics and resin cement. Ninety ceramic blocks were made: 60 blocks of lithium silicate reinforced by zirconia – Celtra Duo (Dentisply-Sirona, Bensheim, Germany) and 30 blocks of lithium disilicate - IPS e.max CAD (Ivoclar Vivadent Ltd, Schaan, Liechtenstein), in dimensions 13 x 15 x 1.5 mm. The samples were randomly divided into 6 groups, with and without aging: Celtra S – Celtra without burning; Celtra C – Celtra with firing; E – IPS E.max CAD; Celtra SE – Celtra without burning and with aging; Celtra CE – Celtra with burning and aging; EE – IPS E.max CAD with aging. The ceramic surfaces were etched with 5% hydrofluoric acid for 30 seconds (Celtra Duo) and 20 seconds (IPS e.max), then the application of the Monobond-N silane bonding agent (Ivoclar Vivadent, Schaan, Liechtenstein) . For each block, 6 cylinders of 1 mm in diameter and 2 mm in height of resin cement were made for the microshear test. The microshear test was performed in a universal testing machine DL 1000 (EMIC, São José dos Pinhais, Paraná, Brazil), with a load cell of 50 kgf and a speed of 0.5 mm/min. The types of faults were analyzed through stereomicroscopic (optical microscope ZEISS MC 80 DX) and scanning electron microscope (Jeol-JSM-T330A-Scanning Microscope-Japan). The roughness test (Ra and Rz) and scanning electron microscopy (SEM) of the ceramic surfaces were performed. The bond strength (n=10) and roughness (n=10) values were subjected to descriptive (mean and standard deviation) and inferential statistical analysis using the 2-factor ANOVA parametric test, followed by Tukey's test (α= 0.05). The microshear test indicated that the condition without crystallization presented better results than the other groups, where it showed a statistically significant difference (p=0.000). Hydrothermal aging was responsible for the decrease in bond strength values for all groups studied. It is concluded that the crystallization firing process and hydrothermal degradation generated a decrease in the bond strength between these two substrates
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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