1,722,235 research outputs found
Lo social instituyente : materiales para una sociología no clásica, de Bergua Amores
No full textFil: Gómez-Quintero, Juan David. Universidad San Jorge; España.Fil: Gómez-Quintero, Juan David. Universidad de Zaragoza; España.Más allá del debate sobre la definición del objeto de estudio de las ciencias sociales, el libro reseñado realiza una minuciosa y renovada reflexión teórica sobre el concepto sociológico de lo social. Discute el carácter hegemónico de las ciencias sociales y la instrumentalización política de los estudios sobre la gente. Propone alternativas poco convencionales para comprender que el dinamismo y el potencial creador de lo social supera las posibilidades técnicas y metodológicas que pretenden su control cognitivo. Desde fuentes teóricas tan diversas como algunas teorías posmodernas, el psicoanálisis y el taoísmo, se entreteje un provocador ensayo enmarcado en lo que el autor denomina sociología no clásica
Users’ Privacy Concerns and Attitudes towards Usage-based Insurance: An Empirical Approach
No full textHarmonizing taxon names in biodiversity data: A review of tools, databases and best practices
No full textGrenié, Matthias, Berti, Emilio, Carvajal-Quintero, Juan, Dädlow, Gala Mona Louise, Sagouis, Alban, Winter, Marten (2021): Harmonizing taxon names in biodiversity data: A review of tools, databases and best practices. Methods in Ecology and Evolution 14 (1): 12-25, DOI: 10.1111/2041-210X.1380
Design of a methodology for the improvement of dental processes based on image processing in digital dentistry
Full text linkfotografías, ilustraciones, tablasThis thesis proposes a methodology for supporting orthodontic treatments through image processing techniques in digital dentistry. Led by Juan David Tamayo Quintero at the Universidad Nacional de Colombia, the research aims to improve orthodontic processes using artificial vision and image processing. The study focuses on developing tools for dental arch shape classification and analysis, employing image processing methods. The methodology integrates data structures for dental models, including various file formats like PLY, STL, OBJ, and PCD. Point cloud data representation is explored, emphasizing neighborhood and curvature estimation techniques.
The document introduces the creation of a database comprising digitized dental models and outlines arch form classification methodologies, including ovoid, tapered, and square forms, along with morphometric templates. Ground truth determination methods and statistical analyses for evaluating model accuracy are also presented.
The data analysis and implementation section details techniques for representing data in a 2.5D space, image projections, and segmentation methods, including watershed segmentation. Two software tools, DentalArch and DentiShape3D, were developed to aid in dental arch analysis, incorporating machine learning and image processing techniques.
The conclusion reflects on achievements in image processing and database construction, highlighting future work areas such as enhancing sample diversity and reducing evaluator biases.
The thesis provides a contribution to the field of digital dentistry, offering methodologies and tools to improve orthodontic processes through image processing techniques (Texto tomado de la fuente).Esta tesis propone una metodología para apoyar los tratamientos de ortodoncia a través de técnicas de procesamiento de imágenes en la odontología digital. Dirigida por Juan David Tamayo Quintero en la Universidad Nacional de Colombia, la investigación tiene como objetivo mejorar los procesos de ortodoncia utilizando visión artificial y procesamiento de imágenes. El estudio se centra en desarrollar herramientas para la clasificación y análisis de la forma del arco dental, empleando métodos de procesamiento de imágenes y técnicas de aprendizaje automático. La metodología integra estructuras de datos para modelos dentales, incluyendo varios formatos de archivo como PLY, STL, OBJ y PCD. Se explora la representación de datos de nube de puntos, haciendo hincapié en técnicas de estimación de vecindario y curvatura.
El documento presenta la creación de una base de datos que comprende modelos dentales digitalizados y describe metodologías de clasificación de forma de arco, incluyendo formas ovoide, cónica y cuadrada, junto con plantillas morfométricas. También se presentan métodos de determinación de la verdad fundamental y análisis estadísticos para evaluar la precisión del modelo.
La sección de análisis de datos e implementación detalla técnicas para representar datos en un espacio 2.5D, proyecciones de imágenes y métodos de segmentación, incluida la segmentación de cuenca hidrográfica. Se desarrollaron dos herramientas de software, DentalArch y DentiShape3D, para ayudar en el análisis del arco dental, incorporando técnicas de aprendizaje automático y procesamiento de imágenes.
La conclusión reflexiona sobre los logros en el procesamiento de imágenes y la construcción de bases de datos, destacando áreas de trabajo futuro como mejorar la diversidad de muestras y reducir los sesgos del evaluador.
La tesis proporciona una contribución al campo de la odontología digital, ofreciendo metodologías y herramientas para mejorar los procesos de ortodoncia a través de técnicas de procesamiento de imágenesDoctoradoDoctor en IngenieríaTratamiento, modelado y visualizacion de datosEléctrica, Electrónica, Automatización Y Telecomunicaciones.Sede Manizale
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
Título: Aurora del peregrino.
No full textEtiqueta marrón.Intérpretes: Intérprete : Juan García, tenor ; orq. direc., Mtro. Juan Quintero -- Juan García, tenor ; al piano, Juan Quintero.Copia digital : BNE.Sistema de grabación "Electric" en etiqueta y "W" (Western Electric System) grabado en el discoFuente de ingreso: César Rodríguez XaixoFecha de publicación tomada de BNE [consulta 22/08/2018
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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