3,784 research outputs found

    Situational-Context: A Unified View of Everything Involved at a Particular Situation

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    As the interest in the Web of Things increases, specially for the general population, the barriers to entry for the use of these technologies should decrease. Current applications can be developed to adapt their behaviour to predefined conditions and users preferences, facilitating their use. In the future,Web of Things software should be able to automatically adjust its behaviour to non-predefined preferences or context of its users. In this vision paper we define the Situational-Context as the combination of the virtual profiles of the entities (things or people) that concur at a particular place and time. The computation of the Situational-Context allow us to predict the expected system behaviour and the required interaction between devices to meet the entities’ goals, achieving a better adjustment of the system to variable contexts.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Forecasting Recharging Demand to Integrate Electric Vehicle Fleets in Smart Grids

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    Electric vehicle fleets and smart grids are two growing technologies. These technologies provided new possibilities to reduce pollution and increase energy efficiency. In this sense, electric vehicles are used as mobile loads in the power grid. A distributed charging prioritization methodology is proposed in this paper. The solution is based on the concept of virtual power plants and the usage of evolutionary computation algorithms. Additionally, the comparison of several evolutionary algorithms, genetic algorithm, genetic algorithm with evolution control, particle swarm optimization, and hybrid solution are shown in order to evaluate the proposed architecture. The proposed solution is presented to prevent the overload of the power grid

    Estudio e implementación de sustituciones y mejoras en Centros de Transformación sobre apoyo y de obra civil en superficie

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    El objeto del presente proyecto es el de especificar las condiciones técnicas, de ejecución y económicas de la reforma y actualización de dos tipos de Centros de Transformación a estudiar: P1: Sustitución de un C.T. sobre poste de 100 kVA para suministro de energía eléctrica a una tensión de 400/230 V, por un Centro de Transformación Intemperie Compacto bajo poste de 250 kVA. P2: Reforma de Centro de Transformación de Obra Civil de Superficie en el cual se proyectará un Transformador de 630 kVA para tensiones de 230/130V y 400/230 V. Ambos Centros de Transformación estarán acondicionados con sus respectivas instalaciones de Puesta a Tierra. Para la realización de este proyecto se ha considerado en todo momento la normativa vigente, así como las prescripciones marcadas por la compañía distribuidora y organismos competentes.Departamento de Ingeniería EléctricaGrado en Ingeniería Eléctric

    Anaerobic co-digestion of municipal sewage sludge and fruit/vegetable waste: effect of different mixtures on digester stability and methane yield

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    There are different options for the management of fruit and vegetable wastes (FVWs), but the most environmental-friendly is the anaerobic digestion, because it allows an optimum recovery of materials and energy from the two by-products: biogas and digestate. Nevertheless, in many cases there are economic and technical problems that cause the selection of other alternatives. Frequently these wastes are produced in large quantities but only during few weeks of the year. In these cases, this is the most important economic problem, because large digesters that would be used only for short time periods every year would be required. In addition, a close control of the pH of the digester is required for this kind of residues, for which the hydrolysis is usually faster than the methanogenesis, so large concentrations of fatty acids should be prevented to maintain the adequate pH value for anaerobic digestion that should be neutral or slightly alkaline. Both problems can be simultaneously overcome by the co-digestion with other residues that are produced throughout the year. Among the benefits of co-digestion, one of the most important is the improvement in the feedstock characteristics, since it may allow a more equilibrate composition resulting in a better performance of the digester in treatment capacity, and a better quality of biogas and digestate. The co-digestion with other substrates with a complementary composition that are produced throughout the year and that are already managed by anaerobic digestion is probably the optimum management option. For these cases, if the existing anaerobic digester is oversized and allows the introduction of additional volumes of wastes, the mean retention time of the digestate should be maintained. Therefore, the anaerobic co-digestion of fruit and vegetable waste (FVW) and municipal sewage sludge (MSS) under mesophilic condition and a constant hydraulic retention time (20 d) is studied. The effects on digester performance of the FVW:MSS ratio and the organic loading rate (OLR) were examined. The OLR is the mass of volatile solids fed per volume of digestate and day.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Coordinating heterogeneous IoT devices by means of the centralized vision of the SDN controller

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    The IoT (Internet of Things) has become a reality during recent years. The desire of having everything connected to the Internet results in clearly identified benefits that will impact on socio economic development. However, the exponential growth in the number of IoT devices and their heterogeneity open new challenges that must be carefully studied. Coordination among devices to adapt them to their users' context usually requires high volumes of data to be exchanged with the cloud. In order to reduce unnecessary communications and network overhead, this paper proposes a novel network architecture based on the Software-Defined Networking paradigm that allows IoT devices coordinate and adapt them within the scope of a particular context.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Estudio de plataformas para la gamificación en el aula

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    Este documento tiene como finalidad la realización de un estudio sobre las plataformas actuales más prometedoras para la implementación de la gamificación en las aulas. Con el objetivo de mejorar la docencia y adaptarse a la actualidad y a las nuevas prácticas educativas, se realizará una introducción de la gamificación como estrategia educativa para fomentar la motivación, participación y el aprendizaje de los alumnos. Para llevar a cabo la implementación de esta estrategia de una forma actual en el aula, se llevará a cabo una investigación exhaustiva sobre una variedad de plataformas, considerando factores clave como la funcionalidad, personalización, integración, gratituidad, facilidad de uso, escalabilidad, recopilación de la información, etc. Por otro lado, también se estudiarán y se reflexionará sobre las posibles dificultades del uso de estas plataformas de gamificación dependiendo de los diferentes contextos educativosThe purpose of this document is to carry out a study on the most promising current platforms for the implementation of gamification in the classroom. With the aim of improving teaching and adapting to current events and new educational practices, gamification will be introduced as an educational strategy to encourage student motivation, participation and learning. In order to carry out the implementation of this strategy in a current way in the classroom, extensive research will be carried out on a variety of platforms, considering key factors such as functionality, customization, integration, free, ease of use, scalability, collection of information, etc. On the other hand, they will also study and reflect on the possible difficulties of using these gamification platforms depending on the different educational contexts.Departamento de Informática (Arquitectura y Tecnología de Computadores, Ciencias de la Computación e Inteligencia Artificial, Lenguajes y Sistemas Informáticos)Máster en Profesor de Educación Secundaria Obligatoria y Bachillerato, Formación Profesional y Enseñanzas de Idioma

    Creación de un treebank de dependencias universales mediante recursos existentes para lenguas próximas: el caso del gallego

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    [Resumen] En este trabajo presentamos una nueva estrategia para crear treebanks de lenguas con pocos recursos para el análisis sintáctico. El método consiste en la adaptación y combinación de diferentes treebanks anotados con dependencias universales de variedades lingüísticas próximas, con el objetivo de entrenar un analizador sintáctico para la lengua elegida, en nuestro caso el gallego. Durante el proceso de selección y adaptación de los treebanks de origen, analizamos el impacto de propiedades de tres niveles diferentes: (i) la distancia entre las lenguas de origen y destino, (ii) la adaptación de características léxico-ortográficas, y (iii) las directrices de anotación entre los treebanks. Usando la estrategia propuesta, entrenamos un analizador sintáctico estadístico para etiquetar, con resultados prometedores y sin datos previos de gallego, un pequeño corpus de esta lengua. La corrección manual de este corpus, usado como gold-standard, nos permitió probar la eficacia del método propuesto.Ministerio de Economía y Competitividad; FFI2014-51978-C2-1-RMinisterio de Economía y Competitividad; FJCI-2014-22853Ministerio de Economía y Competitividad; FFI2014-51978-C2-2-
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