67 resultados para Boundary elements
Resumo:
La comunicació com a mètode per aprendre no és nou, tot i així les noves tecnologies obren la porta a noves oportunitats i nous projectes entorn aquest concepte. No només es tracta de treballar elements curriculars, sinó també actitudinals a través de la opció de connexió entre contextos. L’objectiu d’aquesta recerca és analitzar quina és l’actitud i els aprenentatges i/o retencions dels infants a partir d’una connexió generada entre dos contextos. Per tal de donar resposta a aquest plantejament de la investigació es crea una intervenció entre les aules i s’utilitzen com a instruments de recollida de dades les observacions, els dibuixos i els grups de discussió. Els resultats mostren una actitud oberta i d’interès per part dels infants davant de la metodologia de comunicació a l’aula, però un aprenentatge i/o retenció relacionat amb els continguts dels elements de l’altre context per sobre dels elements TIC. Es conclou doncs que dins l’aula treballant amb les noves tecnologies es genera un incentiu pels infants fent evident que hi ha hagut un aprenentatge compartit.
Resumo:
Las características específicas del colectivo de profesionales de la etapa de Educación infantil proyectan una dinámica muy activa que genera nuevas metodologías, estrategias y recursos para una intervención educativa de calidad, en una etapa de vital importancia para el correcto desarrollo infantil. Estas características han de tenerse en cuenta en la formación de formadores del profesorado de esta etapa educativa, para favorecer su desarrollo profesional. Son necesarios proyectos de formación alternativos que conecten los «ámbitos de educación» a partir de propuestas integradas: escuela, familia, instituciones locales y asociaciones. Conjuntamente han de elaborar modelos desinteresados y democráticos, capaces de canalizar la interacción y la reciprocidad entre la cultura de la escuela y la cultura externa a ella.
Resumo:
It is often assumed that total head losses in a sand filter are solely due to the filtration media and that there are analytical solutions, such as the Ergun equation, to compute them. However, total head losses are also due to auxiliary elements (inlet and outlet pipes and filter nozzles), which produce undesirable head losses because they increase energy requirements without contributing to the filtration process. In this study, ANSYS Fluent version 6.3, a commercial computational fluid dynamics (CFD) software program, was used to compute head losses in different parts of a sand filter. Six different numerical filter models of varying complexities were used to understand the hydraulic behavior of the several filter elements and their importance in total head losses. The simulation results show that 84.6% of these were caused by the sand bed and 15.4% were due to auxiliary elements (4.4% in the outlet and inlet pipes, and 11.0% in the perforated plate and nozzles). Simulation results with different models show the important role of the nozzles in the hydraulic behavior of the sand filter. The relationship between the passing area through the nozzles and the passing area through the perforated plate is an important design parameter for the reduction of total head losses. A reduced relationship caused by nozzle clogging would disproportionately increase the total head losses in the sand filter
Resumo:
In this paper a colour texture segmentation method, which unifies region and boundary information, is proposed. The algorithm uses a coarse detection of the perceptual (colour and texture) edges of the image to adequately place and initialise a set of active regions. Colour texture of regions is modelled by the conjunction of non-parametric techniques of kernel density estimation (which allow to estimate the colour behaviour) and classical co-occurrence matrix based texture features. Therefore, region information is defined and accurate boundary information can be extracted to guide the segmentation process. Regions concurrently compete for the image pixels in order to segment the whole image taking both information sources into account. Furthermore, experimental results are shown which prove the performance of the proposed method
Resumo:
El present treball cerca elements eròtics i sensuals en l'obra dels principals trobadors medievals catalans i compara els resultats amb el llibre de cavalleria més famós de la literatura castellana, l'Amadís de Gaula.
Resumo:
A cohesive element for shell analysis is presented. The element can be used to simulate the initiation and growth of delaminations between stacked, non-coincident layers of shell elements. The procedure to construct the element accounts for the thickness offset by applying the kinematic relations of shell deformation to transform the stiffness and internal force of a zero-thickness cohesive element such that interfacial continuity between the layers is enforced. The procedure is demonstrated by simulating the response and failure of the Mixed Mode Bending test and a skin-stiffener debond specimen. In addition, it is shown that stacks of shell elements can be used to create effective models to predict the inplane and delamination failure modes of thick components. The results indicate that simple shell models can retain many of the necessary predictive attributes of much more complex 3D models while providing the computational efficiency that is necessary for design