1,720,997 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
Contribuciones al estudio de la competencia trófica entre hembras de Yaguaretés y Pumas machos del Parque Nacional do Iguaçu desde el análisis de su materia fecal
Get PDFTrabajo de Conclusión de Curso presentado al
Instituto Latino Americano de las Ciencias de la
Vida y la Naturaleza de la Universidad Federal de
la Integraión Latino Americana, como requisito
parcial a la obtención del título de Bacharel en
Ciencias Biológicas Ecología y Biodiversidad.
Orientador: Prof. Dr. Alexandre Vogliotti.Los mamíferos carnívoros constituyen una parte esencial entre los componentes del ecosistema. En las regiones neotropicales, este grupo se encuentra representado por los dos grandes subórdenes, Feliformia y Caniformia, a través de las familias Felidae y Canidae, Mustelidae, Procyonidae, Ursidae, respectivamente. En Brasil, coexisten 6 especies de felinos, siendo el Yaguareté (Panthera onca) y el Puma (Puma concolor) los depredadores tope de cadena. Específicamente dentro del bioma Selva Paranaense todas estas especies fueron registradas. De acuerdo a las características del nicho de ambos depredadores, la posibilidad de competir por recursos estaría presente. Ademas, la semejanza de tamaños en hembras P. onca y machos P. concolor, acentúa mas esta posibilidad. El estudio tiene como fin describir ciertos aspectos del nicho trófico de ambas especies (presas, biomasa consumida, y sobreposición de la dieta), en vista de confirmar la competencia interespecifica e intersexual. Se estudiaron 12 muestras de materia fecal, ofrecidas por el proyecto "Carnívoros do Iguaçu" para realizar las inferencias necesarias. La identificación de las especies se realizó a partir de los análisis microscópicos (patrones cuticulares y medulares) de los pelos guarda, y macroscopicos (estructura del pelo guarda, huesos, uñas, garras, dientes) en comparación con el material de colección y literatura específica. Para estimar la biomasa consumida se aplicó el factor de corrección de "Ackerman" al peso promedio de presas (PPP), y se los comparo mediante el test t. La sobreposición de la dieta se calculó mediante el índice de competencia de “Pianka”. Las frecuencias de estructuras corporales fueron obtenidas a través de matrices de presencia y ausencia. Fueron registrados e identificados 10 taxa, mediante ambos análisis (micro y macroscópicos) considerando aspectos ecológicos e históricos de las especies en la región. Se obtuvo un valor común corregido en relación a la dieta (4,1 kg/heces), equivalente a 61,5 kg. para P. onca y 63,1 kg. para P. concolor, y una baja sobreposición (Ov: 0,17) dada por la presencia de Dasyprocta azarae en ambos. Se encontró que la dieta de P. onca esta compuesta por individuos pequeños y de porte medio. El valor crítico t resultó mayor al calculado (ttab: 2,13; tcalc: 0,87) con niveles no significativos (p: 0,39). Se discuten dos escenarios de un ambiente perturbado con falta de competencia y baja abundancia en la comunidad de grandes carnívoros, por efectos de las presiones humanas. Otras variables generales se ajustan a las estrategias anticompetitivas. Se resalta el rol de ambas especies en la estructura de las comunidades, así como mayores esfuerzos de monitoreo, muestreo, y las relaciones con la comunidad académica.Os mamíferos carnívoros são uma parte essencial dos componentes do ecossistema. Nas
regiões neotropicais, este grupo é representado pelas duas subordens principais,
Feliformia e Caniformia através da família Felidae e Canidae, Mustelidae, Procyonidae,
Ursidae, respectivamente. No Brasil 6 espécies de felinos coexistem, e a onça (Panthera
onca) junto com a onça-parda (Puma concolor) são os predadores topo de cadeia.
Especificamente dentro do bioma Mata Atlântica estas espécies foram registradas. De
acordo com as características do nicho de ambos predadores, a capacidade para
competir por recursos estaria presente. Além da semelhança de tamanhos em fêmeas P.
onca e machos P. concolor, acentua-se mais esta possibilidade. O estudo tem como fim
descrever alguns aspectos do nicho trófico das duas espécies (presas, biomassa
consumida, e sobreposição da dieta), tendo em vista confirmar a competição
interespecífica e intersexual. Fóram estudadas 12 amostras de fezes, oferecidas pelo
projeto "Carnívoros do Iguaçu" para fazer as análises necessárias. A identificação das
espécies foi feita a partir da análise microscópica (padrões cuticulares e medulares) dos
pelos guarda, e macroscópico (estrutura do pelo guarda, ossos, unhas, garras, dentes)
em comparação com o material da coleção e literatura específica. O factor de correcção
"Ackerman" foi aplicado ao peso médio das presas (PMP), para estimar a biomassa
consumida foi aplicado, e compara-las pelo teste t. A sobreposição da dieta foi calculada
utilizando o índice de competição de "Pianka". Frequências de estruturas corporais foram
obtidas através das matrizes de presença e ausência. Foram registados e identificados 10
táxons por ambas as análises (micro e macroscópicos) considerando os aspectos
ecológicos e históricos das espécies na região. Obteve-se um valor fixo comum em
relação à dieta (4,1 kg/fezes), equivalente a 61,5 kg. P. onca e 63,1 kg. P. concolor, e uma
baixa sobreposição (Ov: 0,17) dada pela presença de Dasyprocta azarae nas duas
especies. Verificou-se que a dieta de P. onca é composta por indivíduos de pequeno e
médio porte. O valor t crítico foi maior do que o calculado (t tab : 2,13; t calc : 0,87) sem níveis
significativos (p = 0,39). Dois cenários de ambientes perturbados, com a falta de
competição e baixa abundância na comunidade de grandes carnívoros, por efeitos de
pressões humanas são discutidos. Outras variáveis gerais são ajustadas às estratégias
anti-competição. O papel de ambas as espécies na estrutura das comunidades, bem
como o aumento dos esforços de monitoramento, amostragem, e as relações com a
comunidade acadêmica é realçado
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
- …
