1,721,469 research outputs found
Estimación de la permeabilidad efectiva de medios porosos artificiales utilizando indicadores de conectividad
No full textGrado obtenido: Magíster en Simulación Numérica y Control de la Universidad de Buenos AiresDisciplina: Maestría en Simulación Numérica y ControlFil: Cabrera Castro, Marcelo Alan. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
Arquivos com valores de demandas para a simulação em 12 semanas do modelo original e dados de suprimentos de três níveis para um único produto
No full textValores de demandas para a simulação em 12 semanas do modelo original da simulação do processo de uma cadeia de suprimentos de três níveis para um único produto
Informe final del mope
Full text linkInforme final de la asignatura Metodología y práctica de la enseñanza.Informe final (Profesorado en Matemática)--Universidad Nacional de Córdoba. Facultad de Matemática Astronomía y Física, 2012.Fil: Bono, Gonzalo Daniel. Universidad Nacional de Córdoba. Facultad de Matemática Astronomía y Física; Argentina.Fil: Castro, Marcelo Alejandro. Universidad Nacional de Córdoba. Facultad de Matemática Astronomía y Física; Argentina.El presente informe describe la experiencia de práctica profesional realizada por tres estudiantes de la Facultad de Matemática, Astronomía y Física, en tres divisiones de primer año de un colegio céntrico de la ciudad de Córdoba. El eje de estas prácticas fue el trabajo con modelización. En una primera instancia, se trabajó con una actividad guiada de modelización intramatemática en un contexto geométrico, para luego abordar las etapas del proceso de modelización matemática como contenido. Realizando posteriormente, experiencias de modelización extramatemática, con temas elegidos por los alumnos, mediante el trabajo por proyectos. Por último, considerando diferentes perspectivas teóricas en educación matemática, se presenta una reflexión, sobre el trabajo con modelización extramatemática y nuestra dificultad en reconocer la matemática subyacente en el trabajo de los estudiantes, con la realidad como contexto.Fil: Bono, Gonzalo Daniel. Universidad Nacional de Córdoba. Facultad de Matemática Astronomía y Física; Argentina.Fil: Castro, Marcelo Alejandro. Universidad Nacional de Córdoba. Facultad de Matemática Astronomía y Física; Argentina
Understanding the role of hemodynamics in the initiation, progression, rupture, and treatment outcome of cerebral aneurysm from medical iamge-based computational studies
Full text linkAbout a decade ago, the first image-based computational hemodynamic studies of cerebral aneurysms were presented. Their potential for clinical applications was the results of a right combination of medical image processing, vascular reconstruction, and grid generation techniques used to reconstruct personalziaed domains for computational fluid and solid dynamics solvers and data analysis and visualization techniques. A considerable number of studies have captivated the attention of clinicians, neurosurgeons, and neuroradiologists, who realized the ability of those tools to help in understanding the role played by hemodynamics in the natural history and management of intracranial aneurysms. This paper intends to summarize the most relevant results in the filed reported during the last years.Fil: Castro, Marcelo Adrian. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
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
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
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