994 resultados para Pizarro, Francisco, approximately 1475-1541
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Sedimentologic and AMS 14C age data are reported for calcareous hemipelagic mud samples taken from gravity cores collected at sites within, or adjacent to five submarine landslides identified with multibeam bathymetry data on the Nerrang Plateau segment and surrounding canyons of eastern Australia's continental slope (Bribie Bowl, Coolangatta-2, Coolangatta-1, Cudgen and Byron). Sediments are comprised of mixtures of calcareous and terrigenous clay (10-20%), silt (50-65%) and sand (15-40%) and are generally uniform in appearance. Their carbonate contents vary between and 17% and 22% by weight while organic carbon contents are less than 10% by weight. Dating of conformably deposited material identified in ten of the twelve cores indicates a range of sediment accumulation rates between 0.017mka-1 and 0.2 mka-1 which are consistent with previous estimates reported for this area. One slide-adjacent core, and four within-landslide cores present depositional hiatus surfaces located at depths of 0.8 to 2.2 meters below the present-day seafloor and identified by a sharp, colour-change boundary; discernable but small increases in sediment stiffness; and a slight increase in sediment bulk density of 0.1 gcm-3. Distinct gaps in AMS 14C age of at least 20ka are recorded across these boundary surfaces. Examination of sub-bottom profiler records of transects through three of the within-slide core-sites and their nearby landslide scarps available for the Coolangatta-1 and Cudgen slides indicate that: 1) the youngest identifiable sediment layer reflectors upslope of these slides, terminate on and are truncated by slide rupture surfaces; and 2) there is no obvious evidence in the sub-bottom profiles for a post-slide sediment layer draped over or otherwise burying slide ruptures or exposed slide detachment surfaces. This suggests that both these submarine landslides are geologically recent and suggests that the hiatus surfaces identified in Coolangatta-1's and Cudgen's within-slide cores are either: a) erosional features that developed after the occurrence of the landslide in which case the hiatus surface age provides a minimum age for landslide occurrence or b) detachment surfaces from which slabs of near-surface sediment were removed during landsliding in which case the post-hiatus sediment dates indicates approximately when landsliding occurred. In either case, it is reasonable to suggest that these two spatially adjacent slides occurred penecontemporaneously approximately 20,000 years ago.
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Energy efficiency is an essential requirement for all contemporary computing systems. We thus need tools to measure the energy consumption of computing systems and to understand how workloads affect it. Significant recent research effort has targeted direct power measurements on production computing systems using on-board sensors or external instruments. These direct methods have in turn guided studies of software techniques to reduce energy consumption via workload allocation and scaling. Unfortunately, direct energy measurements are hampered by the low power sampling frequency of power sensors. The coarse granularity of power sensing limits our understanding of how power is allocated in systems and our ability to optimize energy efficiency via workload allocation.
We present ALEA, a tool to measure power and energy consumption at the granularity of basic blocks, using a probabilistic approach. ALEA provides fine-grained energy profiling via sta- tistical sampling, which overcomes the limitations of power sens- ing instruments. Compared to state-of-the-art energy measurement tools, ALEA provides finer granularity without sacrificing accuracy. ALEA achieves low overhead energy measurements with mean error rates between 1.4% and 3.5% in 14 sequential and paral- lel benchmarks tested on both Intel and ARM platforms. The sampling method caps execution time overhead at approximately 1%. ALEA is thus suitable for online energy monitoring and optimization. Finally, ALEA is a user-space tool with a portable, machine-independent sampling method. We demonstrate two use cases of ALEA, where we reduce the energy consumption of a k-means computational kernel by 37% and an ocean modelling code by 33%, compared to high-performance execution baselines, by varying the power optimization strategy between basic blocks.
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The electrochemical promotion of a platinum catalyst for ethylene oxidation on a dual chamber membrane reactor was studied. The catalyst was supported on a La0.6Sr0.4Co0.2Fe0.803 membrane. Due the supporting membrane's electronic conductivity it is possible to promote the reaction by controlling the oxygen chemical potential difference across the membrane. Upon establishment of an oxygen potential difference across the membrane, oxygen species can migrate and spillover onto the catalyst surface, modifying the catalytic activity. Initial experiments showed an overall promotion of approximately one order of magnitude of the reaction rate of ethylene, under an oxygen atmosphere on the sweep side of the membrane reactor, as compared with the rate under an inert sweep gas. The reaction rate can keep its promoted state even after the flow of oxygen on the sweep side was interrupted. This behavior caused further promotion with every experiment cycle. The causes of permanent promotion and on demonstrating controllable promotion of the catalytic activity are presented. This is an abstract of a paper presented at the AIChE Annual Meeting (San Francisco, CA 11/12-17/2006).
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Com a presente investigação pretendemos conhecer a vivência das emoções dos enfermeiros nos cenários da prestação de cuidados ao doente oncológico e simultaneamente contribuir para uma melhoria das práticas de intervenção e de gestão emocional em enfermagem nos contextos de trabalho em Oncologia, procurando dar resposta à pergunta inicial de investigação: Qual a vivência emocional dos enfermeiros nos cenários da prestação de cuidados ao doente oncológico? Nas opções metodológicas optámos pelo paradigma qualitativo, onde a entrevista narrativa foi a técnica privilegiada de recolha de informação, tendo permitido compreender com profundidade a forma como os enfermeiros vivem a prestação de cuidados ao doente oncológico. As experiências emocionais consideradas mais marcantes foram na generalidade aquelas que mais penosas se constituíram para os entrevistados, relacionadas com uma relação mais próxima e profunda com o doente e com situações de morte e sofrimento. Consequentemente os sentimentos e emoções referidos foram na sua maioria negativa. Na prática de cuidar do doente oncológico verificou-se a influência marcada dos mitos sociais e pessoais associados à doença cancro, tendo sido reconhecida de forma global a complexidade e especificidade inerentes a esta prestação de cuidados, tão gratificante, quanto desgastante. O uso de mecanismos de gestão das experiências emocionais refletiu-se no recurso a estratégias pessoais e externas, usadas na sua maioria com o objetivo de o desgaste emocional. Foram sugeridas várias medidas de intervenção organizacional no reconhecer uníssono da necessidade de acompanhamento e suporte por parte da organização de saúde. Os resultados desta investigação acrescentam assim todo um conjunto de novos dados que ajudam na compreensão da problemática da vivência emocional dos enfermeiros, na certeza de que esta melhorará a prestação de cuidados ao doente oncológico, com consequente otimização organizacional. /ABSTRACT - With this present investigation we intend to study the emocional life of nurses while providing health care to oncological patients and simultaneously contribute to an improvement of the intervention and emotional management practices in nursing in the contexts of working in Oncology, trying to answer the initial question of the inquiry: What is the emotional life of nurses in health care scenerjy to oncological patients? As far as the methodology is concerned we chose the qualitative paradigm, in which the narrative interview was the privileged technique to gather information. That allowed us to deeply understand the way nurses live the providing of health care to the oncological patient, their emotional experiences, what they feel and express, what moves and consumes them, as well as the forms of emotional management. The most striking emotional experiences have, in general, been those considered most painful by the interviewed nurses, usually related to a closer and deeper relation with the patient and situations of death and suffering. The consequent feelings and emotions have been mostly negative. Health care provided to oncologic patients is strongly influenced by social and personal myths related to cancer and both the complexity and specificity inherent to this kind of health care has been acknowledged as rewarding, as consuming. The use of means of emotional management is visible in the resource to personal and external strategies, used to diminish the emotional consumption. They have also suggested some measures of organizational intervention in the unison recognition of the need of accompaniment and support from the health care institution. The results of this investigation, thus add whole a set of new data that helps in the understanding of the problematic of the emotional life of nurses, in the certainty that this will improve the providing of care to the oncolologically sick person, with consequent organizational optimization.
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Background The findings of international studies suggest high rates of interpersonal violence and posttraumatic stress disorder (PTSD) among patients with schizophrenia spectrum disorders. Only few studies, however, have so far been conducted in the German-speaking countries. Objectives The aim of our study was to determine the prevalence of lifetime experiences of interpersonal violence and comorbid PTSD among inpatients in a German university hospital. Method In N = 145 consecutively admitted patients with schizophrenia spectrum disorders (67 % male) the structured trauma interview (STI) was used to assess experiences of interpersonal violence and the structured clinical interview for DSM-IV (SCID) to assess comorbid PTSD. Results Sexual violence under the age of 16 years was reported by 17 % of the patients (women 27 %, men 12 %). Approximately one third (32 %) reported physical violence by parental figures (women 38 %, men 29 %). At least one form of early violence (sexual or physical) was reported by half of the women (48 %) and one third of the men (34 %). Negative sexual experiences later in life were reported by 17 %, physical violence by 38 % and at least one of these forms by 48 % of the patients. In total two thirds of all patients (66 %) reported experiences of violence during their lifetime. The prevalence of acute PTSD was 12 %. Another 9 % of patients had a subsyndromal PTSD. Conclusion The present study confirmed the high rates of experiences of interpersonal violence and comorbid PTSD in a German sample of patients with schizophrenia spectrum disorders. Violence and it’s consequences should therefore be routinely assessed and the full spectrum of trauma-specific therapies should be integrated into the treatment of this group of patients.
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Este artigo debruça-se sobre o período histórico do pós revolução de abril de 1974, a abril de 1976, usando como quadro concetual a noção de educação popular e como contexto empírico a fábrica de conservas “S. Francisco” da empresa Júdice Fialho, localizada na cidade de Portimão. Pretende abrir algumas ideias para perceber de que forma o operariado se organizou em comissões de base, para lutar em defesa de melhores condições de vida e de trabalho. Pretende, ainda, compreender os mecanismos usados para desenvolver um processo educativo de aprendizagem autónoma e emancipatória relativa ao trabalho e à vida social.
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O objetivo deste trabalho teve como principal finalidade incluir a interpretação das obras de arte, nas suas diferentes dimensões, como componentes integradoras do conhecimento nas artes visuais. O contacto com a arte é um dos propósitos implícitos nesta proposta. A convicção da importância do contacto dos alunos com a obra de arte. Da educação estética na formação integral do ser humano e na apetência pelo prazer das artes no seu contexto, assim como a constatação da ausência do diálogo com a obra de arte no programa da disciplina, conduziu-nos à elaboração, experimentação e reflexão sobre um conjunto de atividades de apreciação estética que envolveram a análise e interpretação de obras de arte, bem como com a transmissão de conhecimentos de história de arte, à execução de trabalhos de expressão plástica. As obras de arte, prestam-se a uma pluralidade de interpretações, desenvolvem a sensibilidade e a imaginação, desempenhando por isso um papel importante na experiência pessoal dos indivíduos. O convívio com a arte é um dos modos mais eficazes para a formação da personalidade e para a integração do indivíduo nos valores superiores da humanidade. É hoje quase lugar-comum a referência à importância das atividades expressivos-artísticas no desenvolvimento “harmonioso” da pessoa humana. Dada a natureza prática das atividades de desenho, de pintura e de criatividade, envolvem os alunos e criam um ambiente propício para a aprendizagem. Após a análise e reflexão dos resultados desta experiência, o estudo permite concluir que os alunos estão recetivos a este tipo de experiências e aprendizagens. O diálogo com a obra de arte, associado à transmissão de conhecimentos de história de arte e à realização de trabalhos de expressão plástica, contribui para o aumento do entusiasmo e motivação nos alunos, para o desenvolvimento das suas capacidades de perceção e interpretação de significados, para a superação de dificuldades nas suas produções plásticas e para o aumento da confiança e autoestima face às suas capacidades de expressão, o que torna fundamental a introdução deste tipo de atividades nas nossas atuais práticas letivas.
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São ainda muito incipientes os estudos sobre a vida e obra do médico olhanense Francisco Fernandes Lopes (1884-1969), uma das figuras mais interessantes do quadro cultural português da primeira metade do século XX. Na verdade, dificilmente poderemos caracterizá-lo apenas como “médico”, pois era um intelectual multifacetado e interessado nas mais diversas áreas do saber, assim como também é impossível descrevê-lo apenas como “olhanense”, pois a sua actividade intelectual extravasou largamente o âmbito local, regional e mesmo nacional. A presente dissertação, intitulada Francisco Fernandes Lopes (1884-1969), historiador do Algarve: contributo para a historiografia henriquina, tem dois objectivos principais, patentes no próprio título: compreender o homem, ou seja, elaborar um estudo biográfico sobre Fernandes Lopes, e analisar uma das suas facetas, a de historiador, mais concretamente no que concerne à sua obra acerca do Infante D. Henrique e a sua relação ao Algarve. No que respeita à biografia, pretende-se compreender a vida e obra de Francisco Fernandes Lopes através de uma análise concertada do seu percurso de vida, dos seus principais interesses e da sua actividade cultural e intelectual. Neste âmbito, é essencial ter em consideração que a vida de Fernandes Lopes se desenrolou mormente em Olhão, vila algarvia singular devido ao seu panorama arquitectónico único de açoteias, e que ele tanto se empenhou em divulgar, procurando que Olhão ocupasse um lugar de destaque no mapa do Algarve e, também, de Portugal. Relativamente à produção historiográfica tem particular destaque a temática henriquina, que foi a que mais ocupou Francisco Fernandes Lopes entre as décadas de 30 a 60 do século XX. Os seus estudos devem ser entendidos no âmbito de um período histórico muito específico – o Estado Novo – e tendo por base a evolução do pensamento historiográfico, assim como outros estudos similares e coetâneos que permitam formular uma comparação.
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Tese de mestrado. Biologia (Microbiologia Aplicada). Universidade de Lisboa, Faculdade de Ciências, 2014
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An evaluation of the change in perceived image contrast with changes in displayed image size was carried out. This was achieved using data from four psychophysical investigations, which employed techniques to match the perceived contrast of displayed images of five different sizes. A total of twenty-four S-shape polynomial functions were created and applied to every original test image to produce images with different contrast levels. The objective contrast related to each function was evaluated from the gradient of the mid-section of the curve (gamma). The manipulation technique took into account published gamma differences that produced a just-noticeable-difference (JND) in perceived contrast. The filters were designed to achieve approximately half a JND, whilst keeping the mean image luminance unaltered. The processed images were then used as test series in a contrast matching experiment. Sixty-four natural scenes, with varying scene content acquired under various illumination conditions, were selected from a larger set captured for the purpose. Results showed that the degree of change in contrast between images of different sizes varied with scene content but was not as important as equivalent perceived changes in sharpness.
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Different heating systems have been used in pultrusion, where the most widely used heaters are planar resistances. The primary objective of this study was to develop an improved heating system and compare its performance with that of a system with planar resistances. In this study, thermography was used to better understand the temperature profile along the die. Finite element analysis was performed to determine the amount of energy consumed by the heating systems. Improvements were made to the die to test the new heating system, and it was found that the new system reduced the setup time and energy consumption by approximately 57%.
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Cultura Moderna e Contemporânea, n.4
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Dissertação apresentada à Associação de Politécnicos do Norte para obtenção do Grau de Mestre em Gestão das Organizações, Ramo de Gestão de Empresas Orientação: Prof. Doutor Jorge Ferreira Dias de Figueiredo Co-Orientação: Mestre Luís Francisco de Oliveira Marques Metello
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Dissertação apresentada à Escola Superior de Educação de Lisboa para obtenção do grau de Mestre em Educação Especial – ramo de Problemas de Cognição e Multideficiência
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Thesis submitted to the Instituto Superior de Estatística e Gestão de Informação da Universidade Nova de Lisboa in partial fulfillment of the requirements for the Degree of Doctor of Philosophy in Information Management – Geographic Information Systems