1,720,954 research outputs found
Grado de apropiación de los objetos matemáticas en juego en la resolución de problemas. Un ejemplo habitual sobre la determinación de máximos y mínimos
Get PDFEn este artículo analizamos respuestas de estudiantes universitarios de primer año a un problema, en el cual aparece la función f(x) = x3 usual en textos y cursos de cálculo diferencial. El enunciado lo tomamos del trabajo de Trigueros y Escandón (2008), debido a lo no rutinario del mismo. Un estudio cuantitativo previo de este problema planteado a 90 estudiantes universitarios, arrojó un gran número de respuestas deficientes (Guzmán et al (2010). Por ello decidimos seleccionar algunas respuestas para profundizar su estudio, considerando la teoría de registros de representación de Raymond Duval. El análisis ha dejado en evidencia que los estudiantes no consideran todos los datos del problema y tampoco coordinan los conocimientos representados en los distintos registros de representación: registro simbólico, registro gráfico, de tabla y del lenguaje natural. Según Duval es necesario movilizar la operación de Coordinación entre registros para dejar en evidencia la apropiación de los conocimientos requeridos para trabajar en la solución de un problema
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
Abordagem qualitativa na busca de um contexto para o ensino de matemática em conjunto com a robótica educacional: o Ludobot e suas possibilidades pedagógicas nos anos iniciais do ensino fundamental
Get PDFNeste artigo ocorre uma análise quanto a uma das intencionalidades da pesquisa qualitativa quanto a objetivação do fenômeno, com uma busca por esmiuçar o caminho entre as ações de descrever, compreender e explicar as possibilidades pedagógicas com um determinado kit para o trabalho com a Robótica Educacional (RE), denominado Ludobot, e o ensino de Matemática. Esta pesquisa de abordagem qualitativa, do tipo descritiva, foi realizada com a utilização de análise de dados de um estudo de mestrado profissional, que trata do uso da RE nos anos iniciais do ensino fundamental. Na análise se evidencia a perspectiva de uma pesquisa qualitativa em Educação Matemática, que buscou um aprofundamento de compreensões de fenômenos pesquisados em relação ao contexto em que ocorrem. O caminhar da pesquisa denota a importância da percepção dos embasamentos teóricos subjacentes à prática da RE e do trabalho docente para além das possibilidades dos recursos (ou kits) a serem utilizados. Entende-se que o encaminhamento metodológico apresentado na pesquisa de Santos (2020), foi fundamental para indicar embasamento teórico e científico para a elaboração de um produto educacional e demonstrou que na pesquisa qualitativa o pesquisador precisa ter a sensibilidade de se aproximar de seu objeto de estudo, visando estabelecer relações de pesquisa e, por vezes, distanciar-se dele, para que seja possível a observação em relação a aspectos e enfoques diferentes
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
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