1,720,965 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
Redes ambientales de monitoreo de los recursos hídricos en la cuenca del arroyo Chapaleofú, partido de Tandil
No full textSegún la Organización Mundial de la Salud (2006) el acceso al agua potable segura es esencial para la salud, un derecho humano básico y una política efectiva para la protección sanitaria de la población. El agotamiento y degradación de la calidad de los recursos hídricos es un problema creciente en muchas regiones (Azhar et al., 2015; Tirkey et al., 2017; Singhal et al., 2020). La elaboración de redes monitoras de recursos hídricos y su información generada es vital para el manejo sustentable del recurso (Pessolano et al., 2012; Reyes Gomes et al., 2017; Tian et al., 2019). Esta tesis tuvo como objeto de estudio la cuenca rural del arroyo Chapaleofú, ubicada en el partido de Tandil, provincia de Buenos Aires, Argentina. Su objetivo general fue diseñar, elaborar y evaluar una red ambiental de monitoreo de los recursos hídricos subterráneos y superficiales en la cuenca del arroyo Chapaleofú, incorporando variables del medio natural y socioeconómico. La metodología incluyó un registro de perforaciones; una selección de perforaciones; un censo preliminar en sitios de muestreo de agua subterránea (acuífero libre) y superficial; campañas de muestreo estacionales a lo largo de un año en ambos recursos hídricos y de las características socioeconómicas de su entorno; análisis en laboratorio de las muestras; entrevistas a los productores rurales; uso de sistemas de información geográfica; y uso de herramientas y programas estadísticos.
La evolución del agua subterránea fue de bicarbonatada cálcica a bicarbonatada sódica. Se hallaron concentraciones de nitratos superiores al límite establecido en el Código Alimentario Argentino (CAA) que es de 45mg/l. Las variaciones estacionales de las concentraciones de nitrato estuvieron dadas por fenómenos de dilución. La actividad tambera, la cercanía de pozos ciegos a perforaciones y la acumulación de ganado sobre la zona de la perforación fueron identificadas como las potenciales causas de elevadas cargas de nitratos en cada uno de los sitios. La dirección del flujo subterráneo es hacia el Noreste, acompañando la topografía superficial. No se encontró relación estadísticamente significativa (p-valores=0,3238; 0,6064; 0,4450; 0,4449) entre las variables de manejo analizadas en las perforaciones (mantenimiento, encamisado, uso de suelo en el lote de la perforación y uso de suelo en el establecimiento) y la concentración de nitratos. La hidroquímica del recurso hídrico superficial presentó la misma evolución que en el recurso hídrico subterráneo: de bicarbonatada cálcica a bicarbonatada sódica. Los mayores caudales se encontraron en la zona de llanuras (aguas abajo) donde el arroyo es efluente, al igual que en la zona de piedemonte. En el único sector geomorfológico en el 14 que algunos tramos resultaron ser influentes fue en la zona de serranías donde se presentaron algunos cursos efímeros. Las concentraciones de nitratos no superaron el límite máximo establecido por el CAA en ninguno de los sitios de muestreo en agua superficial. Las variaciones de las concentraciones de este ión estuvieron relacionadas con el fenómeno de dilución. No se encontraron relaciones estadísticamente significativas entre la concentración de nitrato en el recurso hídrico superficial y los usos de suelo adyacentes a los sitios de muestreo (p-valor=0,5871).
El uso de suelo agrícola en la cuenca es predominante en el sector de serranías y se equilibra con el uso ganadero en el sector de piedemonte. En el sector de llanuras predomina el uso de suelo ganadero. Esta distribución se debe a las características edáficas de cada uno de los compartimientos geomorfológicos Durante las entrevistas realizadas se detectó una preocupación en la población con respecto a los agroquímicos y sus efectos. La aplicación de agroquímicos en zonas prohibidas por la legislación ha ocasionado conflictos que llegaron hasta los medios de comunicación e instancias judiciales. Los productores rurales califican de manera negativa la acción de los agroquímicos sobre la salud humana y el ambiente pero reconocen tener que aplicarlos por una cuestión de rendimiento. El principal factor regulador a la hora de realizar aplicaciones es el precio de los agroquímicos, lo que ha llevado a la población a evitar una de las dos fumigadas anuales, recurriendo a trabajar la tierra mediante arado, previo al período de siembra.
Otra problemática detectada fueron las inundaciones, las cuales se relacionan directamente con la morfología de la cuenca. La misma presenta características de una cuenca triangular, con dos vértices en la cabecera, afluentes de similar longitud y sincronismo en la llegada, que pueden provocar crecidas significativas en las zonas de piedemonte y llanura, que presentan una escasa pendiente.
Las entrevistas realizadas evidenciaron las prácticas que se realizan en el arroyo que van desde recreativas hasta volcado de basura y lavado de equipos de fumigación.
Se generó información que se espera sea útil para la elaboración de planes, programas y proyectos que tiendan a una gestión sustentable de los recursos hídricos.Doctorado en Ciencias Aplicadas Mención Ambiente y Salu
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
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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