1,720,956 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
Use of prolonged drying as an alternative to improve the laser fluorescence method to assess activity caries lesions in primary teeth: an in vivo study
No full textO presente trabalho objetivou testar o uso da secagem prolongada (30s) na tentativa de melhorar a habilidade do método de fluorescência a laser em avaliar a atividade de lesões de cárie oclusais em dentes decíduos. Noventa e três crianças, com idade entre 4 e 14 anos, concluíram todas as fases deste estudo. Um examinador, previamente treinado, realizou as medições, após secagem prévia por 3 segundos (controle) e 30 segundos, com o aparelho de fluorescência a laser (Ddpen) nas superfícies oclusais dos molares decíduos selecionados (n=515). Para a validação concorrente, os dentes previamente selecionados foram classificados por dois examinadores quanto à presença e atividade das lesões de cárie através do critério de inspeção visual ICDAS e a avaliação da atividade das lesões foi realizada através da ponderação mental das características clinicas da lesões. Para a validação preditiva, após 1 ano do exame inicial, 19 crianças foram reexaminados pelos métodos descritos acima. Com o intuito de verificar a habilidade do método em diferenciar lesões ativas e inativas, foram consideradas as medições após 3 s e 30 s de secagem, além da diferença entre essas medidas (DIF 30s-3s). Para isso, foram utilizadas análises de regressão linear multinível. Para a validação preditiva, modelos de regressão logística foram usados e o risco relativo com intervalo de confiança de 95% foi calculado. Houve discreta diferença entre os dois tempos de secagem (3s e 30s). Para as lesões clinicamente em esmalte, não houve diferença na magnitude das leituras do DDpen, independentemente do tempo de secagem utilizado. Entretanto, quando foi considerado somente lesões não cavitadas, observaram-se, em média, maiores leituras para as lesões de cárie inativas do que para as ativas, efeito que desapareceu quando a análise foi ajustada pela pigmentação das lesões não cavitadas. A DIF 30s-3s não contribuiu na diferenciação de lesões inativas e ativas, nem considerando lesões clinicamente em esmalte, nem apenas as lesões não cavitadas. As lesões cavitadas ativas tiveram maior leitura de fluorescência a laser que as lesões inativas. Na validação preditiva, as medidas de fluorescência a laser também não foram associadas à progressão das lesões, nem à alteração do status de atividade. Isso foi válido para ambos os tempos de secagem e para a DIF 30s-3s. Conclui-se que a fluorescência a laser é capaz de diferenciar, quanto à atividade, apenas lesões de cárie cavitadas, independente do tempo de secagem utilizado e que a medida da diferença entre as leituras obtidas após secagem de 3s e 30s não auxilia na classificação do status de atividade das lesões de cárie não cavitadas.The aim of the current study was to test the use of an extended drying period (30s), in order to improve the laser fluorescence ability for assessing active and inactive occlusal caries lesions in primary teeth. Ninety-three children, aged 4- 14 yrs-old, were involved in all steps of the study. One examiner, previously trained, performed measurements with laser fluorescence (Ddpen), after 3s and 30 s of previous air-drying, on the occlusal surfaces of selected primary molars (n=515). For the concurrent validation, all previously selected teeth were classified using the ICDAS and the lesion activity assessment was performed through mental weighing of clinical characteristics. For the predictive validation, 19 children were evaluated again following the same criteria mentioned above. Measurements collected after 3 and 30 s of air-drying, and also the difference between them (DIF 30s-3s) were calculated, aiming to verify the ability of the method to differentiate active and inactive lesions. For this, multilevel linear regression analyses were performed. For the predictive validation, logistic regression models were considered and the relative risk with a confidence interval of 95% was also calculated. A slight difference between values was found, for both drying periods (3s and 30s). Concerning the lesions that were clinically classified in enamel, no significant statistical difference was observed on laser fluorescence readings, independently of air-drying time. However, when considering only non-cavitaded lesions, higher mean readings were observed for the inactive lesions than for the active ones. However, this effect disappeared when adjusting the analysis for the stained non-cavitaded lesions. The DIF 30s-3s did not contribute to distinguishing active and inactive lesions. Active cavitated lesions presented higher DDpen readings than inactive cavitated lesions. In the predictive validation, the measurements of laser fluorescence were not also associated to the greatest risk of progression or changes in the status of the activity. It was concluded that the Ddpen is suitable to differentiate cavitated active and inactive lesions independently of the drying period, and that the difference measurement between the obtained readings after 3s and 30s of air-drying does not help in caries activity assessment of noncavitated caries lesions
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
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
- …
