1,720,954 research outputs found
Clasificación de granos de lentejas emplenado procesamiento digital de imágenes
No full textSe presenta en este trabajo un clasificador de granos de lenteja que emplea procesamiento digital de imágenes (PDI).Está basado en comparar, a través del coeficiente de correlación, el histograma normalizado de la imagen digital en niveles de gris de granos de una muestra con los correspondientes a granos identificados por su aspecto en normal, ennegrecido, decolorado y partido, considerados como patrones. Para obtener los histogramas patrón, se seleccionaron, manualmente de un paquete comercial, treinta granos de cada categoría y se registraron sus imágenes con un escáner de escritorio. La pertenencia de un grano a una categoría se definió a través de reglas aplicadas a los valores que toma el
coeficiente de Pearson y el cálculo del porcentaje de cada categoría presente en la muestra se realizó a través de un contador. El procedimiento de comparación y conteo es objetivo, sencillo, rápido y eficiente. En este trabajo, no se tuvieron en cuenta granos brotados, descascarados o picados, aspectos que se encuentran en estudio.Fil: Cleva, Mario Sergio. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Sampallo, Guillermo Manuel. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Rodrigues Da Fonseca, Claudio. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Aquino, Dominga Concepción. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Liska, Diego Orlando. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaPeer Reviewe
Diseño y montaje electromecánico de un sistema de control de calidad de granos
Full text linkEn este trabajo se presenta el diseño y desarrollo de una plataforma para analizar la calidad de granos. La plataforma está compuesta por dos componentes principales: un montaje electromecánico y un software. Ambos componentes trabajan en forma sincronizada. En la plataforma se distribuyen los granos sobre una cinta transportadora con un vertedor hasta completar la superficie de la banda superior de la misma, entonces la cinta se detiene y se registra una imagen color de la muestra de granos, este proceso se repite hasta completar la muestra contenida en el vertedor.
El montaje electromecánico consiste de un vertedor de granos calibrado, una cinta transportadora, un sistema de iluminación y una cámara digital, se emplea una placa Arduino para sincronizar los elementos del montaje. El software permite controlar el funcionamiento de la plataforma y procesa las imágenes
empleando técnicas de visión artificial, y un sistema experto identifica y evalúa las características que definen la calidad de los granos. El software se desarrolló en JAVA, permite flexibilidad en el montaje, es amigable y genera dos tipos de informes, uno de tipo individual por grano y otro global de la muestra.Fil: Sampallo, Guillermo Manuel. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Rodrigues Da Fonseca, Claudio. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Aquino, Dominga Concepción. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Liska, Diego Orlando. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaFil: Cleva, Mario Sergio. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Centro de Investigación Aplicada a las TIC; ArgentinaPeer Reviewe
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
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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