987 resultados para 368.20225


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Monogr??fico con el t??tulo: "Interculturalidad y atenci??n educativa a la poblaci??n inmigrada. Tendencias, modelos y experiencias"

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En la present tesi doctoral es presenta, des d'una perspectiva narrativa i socioconstruccionista, una aproximació a l'estudi de l'experiència de malaltia en càncer a partir del treball amb relats narrats. Es realitza una anàlisi narrativa de la construcció de les històries de malaltia a partir dels relats escrits per les persones "malaltes" i /o els seus familiars. Es cerquen elements per a la reflexió de: a) el paper de la narració en la comprensió de l'experiència de malaltia oncològica i la construcció narrativa d'identitat; b) l'ús del mètode d'anàlisi narrativa dins el camp de la salut/malaltia; i c) implicacions i aplicacions en la pràctica terapèutica. Seguint una orientació metodològica qualitativa, s'analitza la construcció de narratives de malaltia i del self, la construcció i relació amb els personatges de la història, la construcció de la malaltia (càncer), així com les potencialitats i limitacions de l'aproximació narrativa en l'estudi. Finalment, es presenten elements narratius per a la reflexió del seu ús en l'atenció psicològica i la pràctica del professional de la salut en càncer.

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This dissertation examines auditory perception and audio-visual reception in noise for both hearing-impaired and normal hearing persons, with a goal of determining some of the noise conditions under which amplified acoustic cues for speech can be beneficial to hearing-impaired persons.

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El presente volumen da cuenta de las transformaciones físicas, sociales y humanas de la ciudad de Quito impulsadas por los permanentes y aluviales flujos de inmigrantes interioranos durante una época de transición: la primera mitad del siglo XX. La parte medular de esta investigación gira en torno al análisis de los procesos de transfiguración o de mutación étnica y cultural que afectaron tanto a los nuevos como a los viejos residentes de la ciudad, procesos que la historiografía contemporánea y la literatura sociológica han denominado: mestizaje, cholificación y blanqueamiento. La comprensión de los mismos ha sido posible gracias al estudio de dos elementos. En primer lugar, de las etiquetas de carácter estigmatizante: “longo”, “cholo” y “chagra” y de los autoalusivos identificatorios de “chulla” o “gente decente”, que surgieron, se reactivaron y alcanzaron un evidente auge en dicho período. En segundo lugar, del esclarecimiento de las prácticas culturales que constituyeron y definieron a los actores mencionados, y que dan cuenta de las profundas transformaciones culturales acaecidas en la ciudad. En definitiva, el presente estudio destaca el aporte de los inmigrantes interioranos de origen rural y pueblerino a la modernización de la urbe, al mismo tiempo que entrega importantes elementos para esclarecer los problemas fundamentales del mestizaje, a saber: la etnogenesis, la identidad y la cultura de los mestizos.

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Presenta las reseñas de los siguientes libros: Eloy Alfaro. Narraciones históricas. Quito: Universidad Andina Simón Bolívar, Sede Ecuador / Corporación Editora Nacional, 2012, 368 pp . -- Adolfo León Atehortúa Cruz. Germán Colmenares. Una Nueva Historia. Cali: Universidad del Valle, 2013, 161 pp . -- Fernando Chuquimia Bonifaz. Las Sociedades de Socorros Mutuos y Beneficencia en La Paz, 1883-1920. La Paz: Centro de Estudios para la América Andina y Amazónica, 2013, 255 pp . -- Eliga H. Gould. Among the Powers of the Earth. The American Revolution and the Making of a New World Empire. Cambridge: Harvard University Press, 2012, 301 pp.

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A traditional method of validating the performance of a flood model when remotely sensed data of the flood extent are available is to compare the predicted flood extent to that observed. The performance measure employed often uses areal pattern-matching to assess the degree to which the two extents overlap. Recently, remote sensing of flood extents using synthetic aperture radar (SAR) and airborne scanning laser altimetry (LIDAR) has made more straightforward the synoptic measurement of water surface elevations along flood waterlines, and this has emphasised the possibility of using alternative performance measures based on height. This paper considers the advantages that can accrue from using a performance measure based on waterline elevations rather than one based on areal patterns of wet and dry pixels. The two measures were compared for their ability to estimate flood inundation uncertainty maps from a set of model runs carried out to span the acceptable model parameter range in a GLUE-based analysis. A 1 in 5-year flood on the Thames in 1992 was used as a test event. As is typical for UK floods, only a single SAR image of observed flood extent was available for model calibration and validation. A simple implementation of a two-dimensional flood model (LISFLOOD-FP) was used to generate model flood extents for comparison with that observed. The performance measure based on height differences of corresponding points along the observed and modelled waterlines was found to be significantly more sensitive to the channel friction parameter than the measure based on areal patterns of flood extent. The former was able to restrict the parameter range of acceptable model runs and hence reduce the number of runs necessary to generate an inundation uncertainty map. A result of this was that there was less uncertainty in the final flood risk map. The uncertainty analysis included the effects of uncertainties in the observed flood extent as well as in model parameters. The height-based measure was found to be more sensitive when increased heighting accuracy was achieved by requiring that observed waterline heights varied slowly along the reach. The technique allows for the decomposition of the reach into sections, with different effective channel friction parameters used in different sections, which in this case resulted in lower r.m.s. height differences between observed and modelled waterlines than those achieved by runs using a single friction parameter for the whole reach. However, a validation of the modelled inundation uncertainty using the calibration event showed a significant difference between the uncertainty map and the observed flood extent. While this was true for both measures, the difference was especially significant for the height-based one. This is likely to be due to the conceptually simple flood inundation model and the coarse application resolution employed in this case. The increased sensitivity of the height-based measure may lead to an increased onus being placed on the model developer in the production of a valid model

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Bloom-forming and toxin-producing cyanobacteria remain a persistent nuisance across the world. Modelling of cyanobacteria in freshwaters is an important tool for understanding their population dynamics and predicting the location and timing of the bloom events in lakes and rivers. In this article, a new deterministic model is introduced which simulates the growth and movement of cyanobacterial blooms in river systems. The model focuses on the mathematical description of the bloom formation, vertical migration and lateral transport of colonies within river environments by taking into account the four major factors that affect the cyanobacterial bloom formation in freshwaters: light, nutrients, temperature and river flow. The model consists of two sub-models: a vertical migration model with respect to growth of cyanobacteria in relation to light, nutrients and temperature; and a hydraulic model to simulate the horizontal movement of the bloom. This article presents the model algorithms and highlights some important model results. The effects of nutrient limitation, varying illumination and river flow characteristics on cyanobacterial movement are simulated. The results indicate that under high light intensities and in nutrient-rich waters colonies sink further as a result of carbohydrate accumulation in the cells. In turbulent environments, vertical migration is retarded by vertical velocity component generated by turbulent shear stress. (c) 2006 Elsevier B.V. All rights reserved.