1,721,074 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
Las Revoluciones Científicas - ¿Porqué el Premio Nobel 1991? Erwin Neher y el “Patch Clamp”
No full text<p>La Sociedad Colombiana de Historia de la Medicina me ha conferido el alto honor de encargarme el Discurso de Orden, usual en estas ocasiones, con motivo de la recepción como Socio Activo del doctor Fernando Guzmán Mora. El sentimiento de admiración que guardo para con la Sociedad y sus directivas y el afecto que le profeso al doctor Guzmán Mora hacen que el honroso encargo que se me ha conferido sea tomado por mí con la más alta consideración y que lo aprecie en grado sumo.</p><p>Fernando Guzmán Mora es una de las figuras jovenes más brillantes de nuestra medicina en la actualidad. Nació hace 39 años y se graduó de Médico y Cirujano en la Escuela de Medicina del Colegio Mayor de Nuestra Señora del Rosario en 1974. Durante tres años hizo su residencia en Anatomía Patológica en el Hospital San José, lo que había de permitirle adquirir sólidos conocimientos en esa ciencia básica, de inmensa utilidad para su futura carrera quirúrgica.</p><p>Dedicó los siguientes tres años a su entrenamiento como cirujano general en el Hospital de la Samaritana, centro científico de muy alta categoría, fundado por la egregia figura del profesor Jorge E. Cavelier. Posteriormente, viajó a Inglaterra, en donde obtuvo después de cuatro años de entrenamiento, su grado de especialista en Cirugía Cardiotorácica, en el Freeman Hospital de la Universidad de Newcastle Upon Tyne.</p><p>A su regreso al país ha ocupado el cargo de Cirujano de Tórax y Cardiovascular de la Fundación Santa Fé de Bogotá y es Jefe de Transplante Cardiaco en esa misma Institución, en donde llevó a cabo brillantemente el primer transplante de corazón realizado en Bogotá el día 19 de abril de 1990.</p><p>El doctor Guzmán Mora está casado con la doctora María de la Paz Duque de Guzmán, quien a su belleza y clara inteligencia agrega el hecho de ser hija del profesor Luis Duque Gómez, intelectual de gran valia y antropólogo a quien se deben importantes estudios sobre nuestras culturas nativas antiguas y presentes.</p><p>Es además María de la Paz nieta del inolvidable profesor José del Cárm en Acosta, modelo de lo que debe ser el médico en el ejercicio honesto, caritativo y altamente profesional de la Medicina. Siguió en esto el Dr. Guzmán el postulado del Juramento de Hipócrates que aconsejaba a sus discípulos que se casasen con miembros de la cofradía.</p><p>Por todas las razones anteriores, de extensos estudios de medicina, patología y cirugía general y cardiovascular, y por el medio intelectual de su familia, no es de extrañar que el curriculum vitae de Fernando Guzmán sea realmente importante. En efecto, en el curso de su vida profesional ha publicado 76 artículos científicos y es autor o coautor de 7 libros relacionados con su especialidad. Debo por otra parte destacar el hecho de que sus inquietudes intelectuales se extienden más allá de lo puramente relacionado con la cirugía del corazón.</p><p>Ha publicado también estudios diversos sobre nuestra medicina autóctona, se ha inquietado por los trastornos electrolíticos de diversas situaciones patológicas y ha incursionado en temas filosóficos y éticos de tanto interes como lo indican algunos títulos de su producción intelectual: “Muerte, transformación, inmortalidad y cerebro”, “El derecho del médico a saber”, “Los aspectos éticos de la cirugía”, “Los Papas, seres humanos”, “Libertad, necesidad y alienación” y una semblanza del profesor José del Carmen Acosta.</p><p>A las doce sociedades científicas a las que pertenece, agrega otra al ingresar hoy como Socio Activo de la Sociedad Colombiana de Historia de la Medicina, con un espléndido trabajo titulado “Posición y Contribuciones Sociales de los Cirujanos en la Historia”, que habremos de escuchar esta noche.</p><p>En esta sesión solemne he querido disertatasí sea brevemente sobre algunos aspectos de la evolución de la Medicina, que tienen que ver con lo que Thomas S. Kuhn en su clasico libro “Estructura de las Revoluciones Científicas”, publicado en 1962, señalaba como hitos, modelos ó paradigmas de las ciencias...</p><p><strong>RESUMEN </strong></p><p><strong>¿Porqué el Premio Nobel 1991? Erwin Neher y el “Patch Clamp”</strong></p><p><em><strong>(Con autorización especial del autor y de la revista “Consulta” de España).</strong></em></p><p>El profesor Erwin Neher es un científico alemán de cuarenta y cinco años que ideó la técnica conocida con las palabras inglesas “patch clamp”, que en castellano viene él significar “fijación de voltaje en parches de la membrana celular”. A veces, una nueva metodología facilita el avance científico de forma vertiginosa. Tal es el caso del “patch clamp”, que en la última década ha permitido catalogar decenas de canales iónicos de decenas de células excitables y no excitables, y ha hecho posible el análisis exhaustivo de las propiedades cinéticas de su apertura y cierre, de su regulación por neurotransmisores y hormonas, así como la identificación de la subunidades peptídicas implicadas en la estructura y función de muchos de esos canales.</p><p>Recientemente, me comentaba un colega que los que nos dedicamos a este campo estamos encontrando en las células más canales que en Venecia. Dejando aparte ese comentario irónico, lo cierto es que hoy contamos por decenas los subtipos de canales de potasio, se han identificado ya media docena de canales de calcio y se están descubriendo otros nuevos de cloro o de sodio. Unos se activan e inactivan por cambios del potencial de membrana (los denominados canales voltaje-dependientes) y otros por neurotransmisores específicos (los llamados canales operados por receptores).</p><p>Esta variedad de canales abre múltiples caminos para el diseño de fármacos que modulen específicamente uno u otro canal y que, por consiguiente, tienen una notoria potencialidad terapéutica. ¿Cómo se llegó al descubrimiento de las técnicas de “patch clamp”? ¿Cual es su significado?</p>
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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