903 resultados para Field of power


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L'appropriation culturelle possède une diffusion très large et est un phénomène essentiellement intemporel. L'appropriation culturelle est définie comme «the taking- from a culture that is not one’s own- of intellectual property, cultural expressions or artifacts, history and ways of knowledge» (Ziff et Rao 1997: 1). Cela comprend tous les aspects de la spiritualité, les objets sacrés, des valeurs, des histoires et des rites. L'appropriation est étroitement liée aux relations de pouvoir et à la politique. Avec la montée de la popularité du chamanisme et du néo-chamanisme dans la société occidentale, les peuples amérindiens de l'Amérique du Nord (ou d’Australie) expriment leurs inquiétudes et leur désapprobation en ce qui concerne l’appropriation de leurs cérémonies, rituels et croyances sacrées par les Occidentaux. Par le discours contre l'appropriation, les populations autochtones (re)gagnent et (re)créent une identité qui avait été négligée, supprimée et assimilée au cours de la colonisation. Cette création identitaire s’effectue par l'intermédiaire de l'écriture, dans les milieux universitaires, aussi non-académiques, et le partage des pratiques rituelles avec d'autres autochtones (pan amérindianisme). Les auteurs autochtones contestent le statu quo et désirent contribuer à faire avancer le débat concernant l'appropriation spirituelle, les relations de pouvoir et le néo-colonialisme. Les arguments et les opinions concernant l'appropriation spirituelle présentés ici traitent de génocide culturel, d’abus sexuels, de néo-colonialisme, de non-respect et d'inquiétude face aux dangers liés à une mauvaise utilisation des rituels et autres pratiques sacrées. Ce débat est lié au processus de guérison en contexte amérindien (Episkenew 2009). En participant à ce débat sur l'appropriation spirituelle, les peuples autochtones sont activement engagés dans la (re)définition de leur identité. C'est cet engagement actif qui permet à la guérison d’avoir lieu. Ce mémoire aborde quelques-uns des auteurs autochtones contemporains et examine leurs écrits. L'importance de l'histoire et du mot dans la création identitaire est explorée. L’analyse de certains textes portant sur la médecine, la sociologie, la religion et la culture de consommation rend explicite le lien entre identité et politique.

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Ce mémoire utilise des données qualitatives provenant d’entretiens semi-structurés pour examiner les ressources qu’utilisent les individus qui font face à l’insécurité alimentaire sous l’angle du capital culturel de Pierre Bourdieu. Les participants étaient choisis parmi les usagers des organismes alternatifs qui œuvrent en sécurité alimentaire à Montréal. Tous étaient en situation d’insécurité alimentaire. Des analyses inductives et déductives étaient exécutées. Seize indicateurs de la forme du capital culturel incorporée, et trois indicateurs de chacune des formes institutionnalisées et objectivées ont été trouvés à être reliés aux stratégies qu’utilisaient les répondants pour améliorer leur situation alimentaire. Cette recherche nous indique que le capital culturel individuel joue un rôle dans les stratégies utilisées, incluant la participation dans les organismes communautaires. De plus, un manque de capital approprié peut servir comme barrière à la participation dans certaines stratégies ce qui pourra avancer des réflexions sur la justesse et l’efficacité des stratégies actuelles.

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One major component of power system operation is generation scheduling. The objective of the work is to develop efficient control strategies to the power scheduling problems through Reinforcement Learning approaches. The three important active power scheduling problems are Unit Commitment, Economic Dispatch and Automatic Generation Control. Numerical solution methods proposed for solution of power scheduling are insufficient in handling large and complex systems. Soft Computing methods like Simulated Annealing, Evolutionary Programming etc., are efficient in handling complex cost functions, but find limitation in handling stochastic data existing in a practical system. Also the learning steps are to be repeated for each load demand which increases the computation time.Reinforcement Learning (RL) is a method of learning through interactions with environment. The main advantage of this approach is it does not require a precise mathematical formulation. It can learn either by interacting with the environment or interacting with a simulation model. Several optimization and control problems have been solved through Reinforcement Learning approach. The application of Reinforcement Learning in the field of Power system has been a few. The objective is to introduce and extend Reinforcement Learning approaches for the active power scheduling problems in an implementable manner. The main objectives can be enumerated as:(i) Evolve Reinforcement Learning based solutions to the Unit Commitment Problem.(ii) Find suitable solution strategies through Reinforcement Learning approach for Economic Dispatch. (iii) Extend the Reinforcement Learning solution to Automatic Generation Control with a different perspective. (iv) Check the suitability of the scheduling solutions to one of the existing power systems.First part of the thesis is concerned with the Reinforcement Learning approach to Unit Commitment problem. Unit Commitment Problem is formulated as a multi stage decision process. Q learning solution is developed to obtain the optimwn commitment schedule. Method of state aggregation is used to formulate an efficient solution considering the minimwn up time I down time constraints. The performance of the algorithms are evaluated for different systems and compared with other stochastic methods like Genetic Algorithm.Second stage of the work is concerned with solving Economic Dispatch problem. A simple and straight forward decision making strategy is first proposed in the Learning Automata algorithm. Then to solve the scheduling task of systems with large number of generating units, the problem is formulated as a multi stage decision making task. The solution obtained is extended in order to incorporate the transmission losses in the system. To make the Reinforcement Learning solution more efficient and to handle continuous state space, a fimction approximation strategy is proposed. The performance of the developed algorithms are tested for several standard test cases. Proposed method is compared with other recent methods like Partition Approach Algorithm, Simulated Annealing etc.As the final step of implementing the active power control loops in power system, Automatic Generation Control is also taken into consideration.Reinforcement Learning has already been applied to solve Automatic Generation Control loop. The RL solution is extended to take up the approach of common frequency for all the interconnected areas, more similar to practical systems. Performance of the RL controller is also compared with that of the conventional integral controller.In order to prove the suitability of the proposed methods to practical systems, second plant ofNeyveli Thennal Power Station (NTPS IT) is taken for case study. The perfonnance of the Reinforcement Learning solution is found to be better than the other existing methods, which provide the promising step towards RL based control schemes for practical power industry.Reinforcement Learning is applied to solve the scheduling problems in the power industry and found to give satisfactory perfonnance. Proposed solution provides a scope for getting more profit as the economic schedule is obtained instantaneously. Since Reinforcement Learning method can take the stochastic cost data obtained time to time from a plant, it gives an implementable method. As a further step, with suitable methods to interface with on line data, economic scheduling can be achieved instantaneously in a generation control center. Also power scheduling of systems with different sources such as hydro, thermal etc. can be looked into and Reinforcement Learning solutions can be achieved.

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The Bologna Process defends the adoption of a higher education in teaching-learning methodologies that – in contraposition to the previous model based on the transmission of knowledge, which for being essentially theoretical, gives the student a passive role in the knowledge construction process – allows a (pro) active, autonomous and practical learning, where the student acquires and develops his competences. The personal tutorial guidance sessions are included in the teaching contact hours. This abstract presents a study about the University of Minho (first cycle) Courses Students’ perceptions of the personal tutorial guidance sessions’ relevance in the scope of the learning-teaching process, so as to confirm if the implementation/implantation of the commonly called tutorial (type) education, as an approach to an active, autonomous and practical learning, is sensed by the learners themselves

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Este proyecto de investigación busca usar un sistema de cómputo basado en modelación por agentes para medir la percepción de marca de una organización en una población heterogénea. Se espera proporcionar información que permita dar soluciones a una organización acerca del comportamiento de sus consumidores y la asociada percepción de marca. El propósito de este sistema es el de modelar el proceso de percepción-razonamiento-acción para simular un proceso de razonamiento como el resultado de una acumulación de percepciones que resultan en las acciones del consumidor. Este resultado definirá la aceptación de marca o el rechazo del consumidor hacia la empresa. Se realizó un proceso de recolección información acerca de una organización específica en el campo de marketing. Después de compilar y procesar la información obtenida de la empresa, el análisis de la percepción de marca es aplicado mediante procesos de simulación. Los resultados del experimento son emitidos a la organización mediante un informe basado en conclusiones y recomendaciones a nivel de marketing para mejorar la percepción de marca por parte de los consumidores.

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The physiotherapist professional activities, in the beginning were focused only in the clinical field, nowadays it has many different action fields including Physical Activity. Physical activity can be viewed from two dimensions: one biological, which is defined as any activity which requires energy expenditure involving the combined action of multiple systems; on the other side social, understood as a human activity concerning subjectivity conditions influenced by the environment where the individual and the community are developed. Given these dimensions as well as national and international benchmarks this paper’s objective is to present a series of reflections that the authors have done regarding the physiotherapist professional performance in the field of physical activity and the large possibilities derived from their practice in this field.

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The article aims to make visible some nuances of the 17TH century in Spain and the New Granada with emphasis on articulations and tensions that made up this cultural and social space through the analysis of the letrados and its position in the Hispanic cultural field of the 16th and 17TH centuries. This article also discusses the traditional thesis about the cultural isolation and obscurantism in the American colonies before the eighteenth century through the analysis of the circulation of books and knowledge between mainland Spain and its colonies, and the heterogeneous character of the lawyers that affect the symbolic monopoly of the Catholic Church.