Los ingenios de azúcar en La Habana del siglo XVII (1640-1700): Estructura y mano de obra

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Evaluation of new Electricity Meters

New technologies developed (new ways of energy generation and consumption) are promoting the introduction of improvements at electricity networks. Currently, European legislation is promoting changes in electricity networks of member states. These changes include new technologies to facilitate the introduction of renewable energy sources to the grid and have a more efficient use of energy. Smart grids are able to achieve these objectives. One of the important issues at smart grids is the requirement of having good measures (to be able to control the power grid) and good communication between all the electricity market participants. Smart meters are part of the smart grid technologies and are actually useful to solve this task Smart meters have a lot of features, but the most important is the two-way communication. This really differentiates this meter and electronic meters. This Master Thesis is going to study deeply this communication to understand how it works, by developing an own program able to read the measurements taken by the meter

Esclavos africanos en la Habana: Zonas de procedencia y denominaciónes étnicas. 1570 - 1699.

Sin resume

El verbo en algunos gramáticos latinos: sus accidentes.

Sin resume

Sistema de Decisión Borroso para la aplicación del Análisis Modal de Fallos y Efectos (AMFE).

En este trabajo se presenta una alternativa para la aplicación del Análisis Modal de Fallos y Efectos (AMFE) a cualquier tipo de problema. Se presenta una metodología basada en un sistema de decisión borroso que apoyado en reglas cualitativas permite est

Sindicación de contenidos para la investigación: iniciativas y potenciales usos en España

Versión revisada y corregida, posteriormente a su publicación en las Actas de las 10as Jornadas Españolas de Documentación, Fesabid 2007.La sindicación de contenidos, que en general se presenta como una técnica idónea para mantenerse constantemente informado, ofrece también interesantes posibilidades para la Ciencia. En este estudio se presentan los potenciales usos de la sindicación para la investigación y se lleva a cabo un análisis general de la situación española en cuanto a su implantación. Para ello se identificaron los principales tipos y proveedores de información, se visitaron los sitios web y se localizaron los canales de sindicación existentes. Los resultados obtenidos revelan que esta tecnología está siendo infrautilizada por todos los agentes implicados aunque existen iniciativas aisladas de gran interés

Two-layer particle filter for multiple target detection and tracking

This paper deals with the detection and tracking of an unknown number of targets using a Bayesian hierarchical model with target labels. To approximate the posterior probability density function, we develop a two-layer particle filter. One deals with track initiation, and the other with track maintenance. In addition, the parallel partition method is proposed to sample the states of the surviving targets

An evaluation of categories for tactical actions: A preliminary study of combat analysis in taekwondo

El taekwondo es un deporte de combate que como tal presenta interacción directa de dos competidores, en un espacio compartido y con objetivos opuestos, en el que los aspectos tácticos juegan un papel crucial debido a la corta duración de la práctica y a la rápida interacción entre los oponentes. Debido a las escasas publicaciones que hemos encontrado en torno al análisis táctico de rivales en este deporte, el objetivo del presente estudio es mostrar cómo se puede realizar el análisis del combate en taekwondo de la forma más completa posible. La metodología empleada consta de dos partes: (a) por un lado se analizan y comparan aquellas propuestas teórico-científicas que han utilizado categorías de análisis para la observación en taekwondo, aportando las críticas pertinentes y aglutinando los aspectos positivos de las mismas para dar respuesta con una nueva categorización más completa; y (b) desarrollo de un instrumento de registro basado en nuevas categorías que permiten reflejar lo que acontece a un competidor concreto durante un combate de taekwondo. Por último, se pone en práctica el instrumento para comprobar qué información aporta. Este instrumento permite a entrenadores y deportistas abordar el proceso de análisis de rivales, y utilizar la información obtenida en entrenamientos y competiciónTaekwondo is a combat sport having direct interaction between two competitors, in a shared space and with opposite objectives, in which tactical aspects play a crucial role because of the short duration of the contest and the quick interaction between opponents. Little research has been conducted about the tactical analysis of rivals in this sport; therefore, the objective of this study was to show how to perform a complete taekwondo fight analysis. The methodology consisted of two parts: (a) analysis and comparison of previous research to analyse categories in taekwondo, providing the study with more comprehensive categorizations; and (b) development of a registering tool based on the new categories that enabled the research to show what happens to a competitor during a taekwondo fight. Finally, the instrument was used to validate the tool and new categories. The tool allowed coaches and athletes to approach rivals analysis to use this information obtained in trainings and competition

Identification and characterization of Rhipicephalus (Boophilus) microplus candidate protective antigens for the control of cattle tick infestations

The cattle ticks, Rhipicephalus (Boophilus) spp., affect cattle production in tropical and subtropical regions of the world. Tick vaccines constitute a cost-effective and environmentally friendly alternative to tick control. The recombinant Rhipicephalus microplus Bm86 antigen has been shown to protect cattle against tick infestations. However, variable efficacy of Bm86-based vaccines against geographic tick strains has encouraged the research for additional tick-protective antigens. Herein, we describe the analysis of R. microplus glutathione-S transferase, ubiquitin (UBQ), selenoprotein W, elongation factor-1 alpha, and subolesin (SUB) complementary DNAs (cDNAs) by RNA interference (RNAi) in R. microplus and Rhipicephalus annulatus. Candidate protective antigens were selected for vaccination experiments based on the effect of gene knockdown on tick mortality, feeding, and fertility. Two cDNA clones encoding for UBQ and SUB were used for cattle vaccination and infestation with R. microplus and R. annulatus. Control groups were immunized with recombinant Bm86 or adjuvant/saline. The highest vaccine efficacy for the control of tick infestations was obtained for Bm86. Although with low immunogenic response, the results with the SUB vaccine encourage further investigations on the use of recombinant subolesin alone or in combination with other antigens for the control of cattle tick infestations. The UBQ peptide showed low immunogenicity, and the results of the vaccination trial were inconclusive to assess the protective efficacy of this antigen. These experiments showed that RNAi could be used for the selection of candidate tick-protective antigens. However, vaccination trials are necessary to evaluate the effect of recombinant antigens in the control of tick infestations, a process that requires efficient recombinant protein production and formulation systems

A criação de conteúdos de ficção juvenil em redes sociais.

This research addresses the challenge of analyzing the interactive practices that young people develop in fan communities through different platforms and social networks. For this purpose, a case study based on the 3rd season of the series SKAM Spain is proposed. The theoretical framework defines the importance of fan communities in the media context, the role of social networks as spaces for youth participation and the interaction models that arise from this fiction consumption. As for the methodology, a qualitative analysis based on Digital Anthropology is used through various data collection techniques such as virtual Ethnography and Focus Group, which are analyzed and interpreted according to the theory of discourse analysis, using a multimodal approach. The results of the research involve the reconstruction of the contents generated through social networks, taking into account both the intentionality of their creators and the impact achieved among the social audience. Finally, the discussion allows us to approach the new communicative phenomena and content models elaborated by young people in social networks.Esta investigación aborda el reto de analizar las prácticas interactivas que los jóvenes desarrollan en las comunidades de fans a través de diferentes plataformas y redes sociales. Para ello, se plantea un estudio de caso basado en la 3º temporada de la serie SKAM España. El marco teórico define la importancia de las comunidades de fans en el contexto de los medios, el papel de las redes sociales como espacios para la participación juvenil y los modelos de interacción que surgen a partir de este consumo de ficción. En cuanto a la metodología, se emplea un análisis cualitativo basado en la Antropología Digital a través de varias técnicas de recogida de datos como la Etnografía virtual y Focus Group, que son analizados e interpretados según la teoría de análisis del discurso, utilizando para ello un enfoque multimodal. Los resultados de la investigación suponen la reconstrucción de los contenidos generados a través de las redes sociales, teniendo en cuenta tanto la intencionalidad de sus creadores como el impacto logrado entre la audiencia social. Finalmente, la discusión permite aproximarnos a los nuevos fenómenos comunicativos y modelos de contenidos elaborados por los jóvenes en redes sociales.Esta investigação aborda o desafio de analisar as práticas interactivas que os jovens desenvolvem nas comunidades de fãs através de diferentes plataformas e redes sociais. Para tal, é proposto um estudo de caso baseado na 3ª temporada da série SKAM Espanha. O quadro teórico define a importância das comunidades de fãs no contexto dos meios de comunicação social, o papel das redes sociais como espaços de participação dos jovens e os modelos de interacção que decorrem deste consumo de ficção. Quanto à metodologia, uma análise qualitativa baseada na Antropologia Digital é utilizada através de várias técnicas de recolha de dados como a Etnografia virtual e o Focus Group, que são analisados e interpretados de acordo com a teoria da análise do discurso, utilizando uma abordagem multimodal. Os resultados da investigação envolvem a reconstrução dos conteúdos gerados através de redes sociais, tendo em conta tanto a intencionalidade dos seus criadores como o impacto alcançado entre o público social. Finalmente, a discussão permite-nos abordar os novos fenómenos comunicativos e modelos de conteúdo elaborados pelos jovens nas redes sociais