1,720,958 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
Produção e caracterização de farinhas e concentrados proteicos de amaranto (Amaranthus cruentus)
No full textOrientador: Jaime Amaya-FarfanDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de AlimentosResumo: o grão de amaranto, espécie pertencente à classe das Dicotiledôneas, família das Amaranthaceae, possui características morfológicas e nutricionais comuns aos cereais e leguminosas, sendo considerado como "pseudo-cereal". A planta é oriunda das regiões andinas, e é utilizada em outros países da América, como o México e os Estados Unidos. No Brasil, esta cultura está sendo introduzida após processo de adaptação em solo e clima do Cerrado brasileiro pela EMBRAPA(Unidade Cerrados - DF). A fim de estudar as suas características composicionais e possíveis alterações com o processamento, esta pesquisa pretendeu investigar o comportamento físico-químico das proteínas do grão (Amaranthus cruentus variedade Japônica) durante o processo de extração das mesmas, visando a sua máxima extratabilidade. Foram produzidas três farinhas, as quais foram denominadas: farinha-base (FB), farinha desengordurada (FD) e farinha hidrolisada com a-amilase (FH). As farinhas serviram como matéria-prima para a extração da fração protéica
em meio aquoso (solubilização em pH8 e precipitação em pH4,25). A partir de cada uma das farinhas, foi gerado um concentrado protéico (CP): concentrado protéico da farinha-base (CPFB), e os correspondentes CPFD e CPFH. As farinhas e concentrados foram submetidos à análise de composição centesimal, cor e perfil de solubilidade protéica em água e solução de O,lM NaCl, de ácidos graxos, aminoácidos e eletroforese. Os resultados mostraram que a hidrólise amilácea resultou numa farinha com o maior teor protéico ("'30%) porém, com alteração negativa da coloração. Dentre os concentrados, o CPFDfoi o que se apresentou com maior teor protéico ("'80%) e também maior recuperação protéica ("'47%), porém, foram a FB e seu respectivo concentrado os que apresentaram maior solubilidade protéica, independente dos pHs e solventes utilizados. Em relação ao perfil de ácidos graxos, todas as farinhas e concentrados foram semelhantes, com o predomínio ("'60%) de ácido oléico e linoléico. Quanto ao perfil aminoacídico, todas as farinhas e concentrados demonstraram possuir alto teor de sulfurados, enquanto a leucina foi o 10 aminoácido limitante em FB, FD, CPFB, CPFDe CPFH,e lisina em FH. De acordo com o perfil eletroforético das proteínas, as FD e FH apresentaram maior número de bandas identificáveis. Dos resultados obtidos, pode-se concluir que, independente do processo utilizado, desengorduramento ou hidrólise dos amidos, não é possível se produzir isolados protéicos (proteína > 90%) por precipitação isoelétrica simples da farinha do grão de amaranto. Isto
sugere que embora exista uma interação proteína-gordura, a interação
proteína-amido parece ser mais forte que a primeira. Contudo, o concentrado extraído da farinha desengordurada possui excelente composição nutricional, como alto teor protéico e bom perfil aminoacídico, além de alta solubilidade protéica e ausência do atributo negativo na cor. Posteriores pesquisas poderão apontar aplicações para o concentrado poderiam ser apontadas para a formulação de alimentos para uso geral e/ou para fins especiais.Abstract: Grain amaranth is a minute dicotyledonous seed from a plant that belongs to the Amaranthaceae family and is considered a 'pseudo-cereal' because it bears morphological and nutritional characteristics shared by both cereal and leguminous seeds. The grain it is said to have been first described in the high Andes, although it is known in Mexico and the United States. Following an agronomic adaptation program, Embrapa-Cerrados has been responsible for the introduction of this crop in Brazil. The objectives of this work were to study some compositional and physicochemical characteristics of the proteins of Brazilian amaranth (Amaranthus cruentus variedade Japônica) and their possible alteration due to the protein isolation. Three flours were obtained and denominated as basic flour (FB), defatted basic flour (FD) and FB from which the starch was removed with a-amylase (FH). The corresponding protein concentrates (CPFB, CPFD, CPFH) were also obtained by dissolution of the protein in aqueous pH8 and precipitation at pH4.25. Both flours and concentrates had their solubility profiles determined in both water and O.lM NaCI solution and were characterized in terms of proximal, amino acid and fatty acid composition. The color parameters were also determined. Among the concentrates, the CPFD exhibited the highest protein content (80%) and protein yield [47%). Nevertheless, the highest amounts of soluble protein were observed from FBand CPFB, regardless of the solvent. With regard to the fatty acids, both flours and concentrates had similar compositions, showing the predominance of oleic and linoleic acids (60%), independent of fat removal. In terms of amino acids, ali of the products showed to contain high levels of both methionine and cysteine, while leucine was the first limiting in ali, except
for FH, which was limiting in Iysine. The protein elecrophoretic profiles of FB
and FH revealed a greater number of identifiable bands. From these results it
can be concluded that regardless of whether the basic flour is defatted or
starch-hydrolyzed, the protein content of the isolate cannot reach 90% by
simple isoelectric precipitation. This suggests that although the protein of grain amaranth can be interacting with both lipids and carbohydrates, the interaction with the latter seems to be a stronger one. The concentrate obtained from the defatted flour apparently carries a good protein and amino acid content, high solubility and no negative color attributes. Further studies will determine if applications of this product are feasible in foods for special purposes.MestradoMestre em Alimentos e Nutriçã
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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