43 resultados para Picabia
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Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal
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Pour respecter les droits d’auteur, la version électronique de cette thèse a été dépouillée de certains documents visuels et audio-visuels. La version intégrale de la thèse a été déposée au Service de la gestion des documents et des archives de l'Université de Montréal
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Demostrar que cuanto mayor sean la habilidad visoconstructiva, la capacidad de percepción y de memoria visuales, mayor será el éxito académico y, en consecuencia, menor el fracaso escolar. 40 niños-as de colegios de EGB (público, privado) de medio rural. 40 niños-as de colegios de EGB (público, privado) de medio urbano. Entrevista inicial con los profesores de los centros seleccionados para que proporcionasen una lista de niños con determinadas condiciones. Pase de test de retención visual de Benton y el test de matrices progresivas de Raven. Los datos fueron tratados estadísticamente con la técnica de grupos apareados e independientes. Test de retención visual de Benton, test de Raven. Técnica de grupos apareados e independientes, técnicas estadísticas. Los niños de medio rural o urbano y éxito escolar, tienen mayor capacidad de memoria visual, percepción visual y capacidades viso-constructivas, que los niños del mismo medio, pero con fracaso escolar. A mayor capacidad de memoria visual, mejor rendimiento escolar tanto en los niños de medio rural como urbano.
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Determinar cuáles son las respuestas que los adolescentes de ambos sexos, estudiantes de Bachillerato, dan a un cuestionario de temores de 122 elementos, basado en Wolpe. Establecer la diferencia estadística que puede existir entre los distintos cursos de Bachillerato, en cada sexo, y entre ambos sexos, en cada curso. Ello con relación a cada uno de los elementos del cuestionario. 323 alumnos de Bachillerato de centro público de Sevilla. Pase del cuestionario para a continuación proceder a la elaboración estadística de los datos. Inventario de miedos FSS-III-122. Técnicas estadísticas. Existen diferencias significativas en las respuestas a los diversos ítems del cuestionario entre los grupos de sujetos. Existen diferencias significativas para determinados ítems del cuestionario al comparar entre sí los distintos grupos de varones, por una parte, y los distintos grupos de mujeres por otra. También se han encontrado diferencias significativas al comparar varones y mujeres en cada uno de los cursos de Bachillerato. Existencia de ítems para los que existía diferencia significativa entre sexos en primer curso, pero no se mantenía en segundo ni tercero. Otras veces las diferencias significativas aparecían en segundo curso, y otras en tercero.
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Se generan una serie de cuestionamientos acerca de cuál campo de acción se enmarca como el óptimo dentro la seguridad y salud ocupacional según el perfil profesional del fisioterapeuta, para ello, este trabajo de grado busca, en primera instancia, reconocer un marco teórico que relacione los distintos escenarios donde el profesional fisioterapeuta actualmente centra su quehacer profesional en el ámbito de Seguridad y Salud Ocupacional, y en segunda plano, pretende establecer diversos parámetros que permitan identificar la situación actual del fisioterapeuta en cuanto al lugar de trabajo, tipo de vinculación laboral, y su relación con el cargo desempeñado en Salud Ocupacional . Con esta investigación se proyecta determinar cómo, dónde y en qué se esta desempeñando el fisioterapeuta en el área de seguridad y salud ocupacional.
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Resumen tomado de publicación
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Se estudió la fiabilidad y validez del Cuestionario de Conductas Problemáticas del Asma con población asmática infanto-juvenil y el resultado obtenido es que sí que es un instrumento fiable y válido para detectar problemas conductuales asociados al asma en niños y jóvenes afectados de esta enfermedad.
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Resumen tomado de la revista
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Resumen tomado de la revista
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Stable isotope and ice-rafted debris records from three core sites in the mid-latitude North Atlantic (IODP Site U1313, MD01-2446, MD03-2699) are combined with records of ODP Sites 1056/1058 and 980 to reconstruct hydrographic conditions during the middle Pleistocene spanning Marine Isotope Stages (MIS) 9-14 (300-540 ka). Core MD03-2699 is the first high-resolution mid-Brunhes record from the North Atlantic's eastern boundary upwelling system covering the complete MIS 11c interval and MIS 13. The array of sites reflect western and eastern basin boundary current as well as north to south transect sampling of subpolar and transitional water masses and allow the reconstruction of transport pathways in the upper limb of the North Atlantic's circulation. Hydrographic conditions in the surface and deep ocean during peak interglacial MIS 9 and 11 were similar among all the sites with relative stable conditions and confirm prolonged warmth during MIS 11c also for the mid-latitudes. Sea surface temperature (SST) reconstructions further reveal that in the mid-latitude North Atlantic MIS 11c is associated with two plateaus, the younger one of which is slightly warmer. Enhanced subsurface northward heat transport in the eastern boundary current system, especially during early MIS 11c, is denoted by the presence of tropical planktic foraminifer species and raises the question how strongly it impacted the Portuguese upwelling system. Deep water ventilation at the onset of MIS 11c significantly preceded surface water ventilation. Although MIS 13 was generally colder and more variable than the younger interglacials the surface water circulation scheme was the same. The greatest differences between the sites existed during the glacial inceptions and glacials. Then a north - south trending hydrographic front separated the nearshore and offshore waters off Portugal. While offshore waters originated from the North Atlantic Current as indicated by the similarities between the records of IODP Site U1313, ODP Site 980 and MD01-2446, nearshore waters as recorded in core MD03-2699 derived from the Azores Current and thus the subtropical gyre. Except for MIS 12, Azores Current influence seems to be related to eastern boundary system dynamics and not to changes in the Atlantic overturning circulation.
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High resolution reconstructions of sea surface temperature (Uk'37-SST), coccolithophore associations and continental input (total organic carbon, higher plant n-alkanes, n-alkan-1-ols) in core D13882 from the shallow Tagus mud patch are compared to SST records from deep-sea core MD03-2699 and other western Iberian Margin cores. Results reveal millennial-scale climate variability over the last deglaciation, in particular during the LGIT. In the Iberian margin, Heinrich event 1 (H1) and the Younger Dryas (YD) represent two extreme episodes of cold sea surface condition separated by a marine warm phase that coincides with the Bølling-Allerød interval (B-A) on the neighboring continent. Following the YD event, an abrupt sea surface warming marks the beginning of the Holocene in this region. SSTs recorded in core D13882 changed, however, faster than those at deep-sea site MD03-2699 and at the other available palaeoclimate sequences from the region. While the SST values from most deep-sea cores reflect the latitudinal gradient detected in the Iberian Peninsula atmospheric temperature proxies during H1 and the B-A, the Tagus mud patch (core D13882) experienced colder SSTs during both events. This is most certainly related to a supplementary input of cold freshwater from the continent to the Tagus mud patch, a hypothesis supported by the high contents of terrigenous biomarkers and total organic carbon as well as by the dominance of tetra-unsaturated alkenone (C37:4) observed at this site. The comparison of all western Iberia SST records suggests that the SST increase that characterizes the B-A event in this region started 1000 yr before meltwater pulse 1A (mwp-1A) and reached its maximum values during or slightly after this episode of substantial sea-level rise. In contrast, during the YD/ Holocene transition, the sharp SST rise in the Tagus mud patch is synchronous with meltwater pulse IB. The decrease of continental input to the mud patch conflrms a sea level rise in the region. Thus, the synchronism between the maximum warming in the mid-latitudes off the western Iberian margin, the adjacent landmasses and Greenland indicates that mwp-lB and the associated sea-level rise probably initiated in the Northern Hemisphere rather than in the South.
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It is well established that orbital scale sea-level changes generated larger transport of sediments into the deep-sea during the last glacial maximum than the Holocene. However, the response of sedimentary processes to abrupt millennial-scale climate variability is rather unknown. Frequency of distal turbidites and amounts of advected detrital carbonate are estimated off the Lisbon-Setúbal canyons, within a chronostratigraphy based on radiometric ages, oxygen isotopes and paleomagnetic key global anomalies. We found that: 1) Higher frequency of turbidites concurred with Northern Hemisphere coldest temperatures (Greenland Stadials [GS], including Heinrich [H] events). But more than that, an escalating frequency of turbidites starts with the onset of global sea-level rising (and warming in Antarctica) and culminates during H events, at the time when rising is still in its early-mid stage, and the Atlantic Meridional Overturning Circulation (AMOC) is re-starting. This short time span coincides with maximum gradients of ocean surface and bottom temperatures between GS and Antarctic warmings (Antarctic Isotope Maximum; AIM 17, 14, 12, 8, 4, 2) and rapid sea-level rises. 2) Trigger of turbidity currents is not the only sedimentary process responding to millennial variability; land-detrital carbonate (with a very negative bulk d18O signature) enters the deep-sea by density-driven slope lateral advection, accordingly during GS. 3) Possible mechanisms to create slope instability on the Portuguese continental margin are sea-level variations as small as 20 m, and slope friction by rapid deep and intermediate re-accommodation of water masses circulation. 4) Common forcing mechanisms appear to drive slope instability at both millennial and orbital scales.