19,989,090 research outputs found
Aportes de la escritura de invención a la formación docente de nivel primario
No full textFil: Gamito, María Teresa. Universidad de Buenos Aires. Facultad de Filosofía y Letras
Techniques for Stochastic ImplicitSurface Modelling and Rendering
No full textImplicit surfaces are a powerful shape primitive for computer graphics. This thesis focuseson a shape modelling approach which generates synthetic shapes by the specification of animplicit surface generating function that has random properties. This type of graphic objectcan be called a stochastic implicit surface because the surface is perceived as the realisationof a stochastic process. The main contributions of this thesis are in the form of new andimproved modelling and rendering algorithms to deal with stochastic implicit surfaces that canbe complex and feature fractal scaling properties.On the modelling side, a new topological correction algorithm is proposed to detect disconnectedsurface parts that arise as a consequence of the implicit surface representation. A surfacedeformation algorithm, based on advection through a vector field, is also presented.On the rendering side, several algorithms are proposed. First, an improved ray casting methodis presented that guarantees correct intersections between view rays and the surface. Second, anew progressive refinement rendering algorithm is proposed that provides a dynamic renderingenvironment where the image quality steadily increases with time. Third, a distributed renderingmechanism is presented to deal with the long computation times involved in the imagesynthesis of stochastic implicit surfaces.An application of the proposed techniques is given in the context of the procedural modellingof a planet. A procedural planet model must be able to generate synthetic planets showing thecorrect range of geological scales. The planet is generated as a stochastic implicit surface. Thisrepresents an improvement over previous models that generated planets as displacement mapsover a sphere. Terrain features that were previously difficult to model can be achieved throughthe implicit surface approach. This approach is a generalisation over those previous modelssince displacement maps over the sphere can be recast as implicit surfaces.EG Graphics Dissertation Onlin
La motivación en la enseñanza de la lengua extranjera (inglés) en el aula de Educación Infantil.
No full textBlázquez Prados, María; director de proyecto: Gamito Moreno, María2020-2021Grado de Maestro en Educación InfantilFacultad de Estudios Sociales y Lenguas Aplicada
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
Variations on the Author
No full text“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
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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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