940 resultados para 1042


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Multiple frequency bio-electrical impedance analysis (MFBIA) may be useful for monitoring fluid balance in newborn infants or to provide early prediction of the outcome following perinatal asphyxia. A reference range of data is needed for identification of babies with abnormal impedance values. This was a cross-sectional observational study in 84 term and near-term healthy neonates less than 12 h postpartum. Whole body and cerebral MFBIA measurements were performed at the bedside in the post-natal ward. Gestational age, post-natal age, gender, birthweight, head circumference and foot length measures were recorded. Reference values for impedance at the characteristic frequency (Z(C)) and resistance at zero frequency (R-0) are reported for whole body and cerebral impedance. Significant correlations (p < 0.05) were observed between whole body impedance and birthweight, footlength and head circumference. Females had a significantly higher whole body R0 than males. Cerebral impedance did not correlate significantly with any of the demographic measures and therewere no gender differences observed for cerebral impedance. The reference range for whole body multi-frequency bio-impedance values in term and near-term infants within the first 12 h postpartum can be calculated from the footlength (FL) using the following equations: Z(C) = (942.9 - 4.818* FL) +/- 124.6 Omega; R-0 = (1042 - 4.520(*)FL) +/- 135.5 Omega. For cerebral impedance the reference range is 29.5-48.7 Omega for Z(C) and 33.7-58.0 Omega for R-0.

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O presente estudo investiga repercussões existentes, para as escolas públicas, entre os conteúdos científicos curriculares ministrados e as orientações doutrinárias de denominações religiosas cristãs. Estes impactos ocorrem principalmente em relação a duas temáticas: 1) direitos sexuais e reprodutivos e questões de gênero; 2) criacionismo versus evolucionismo. A metodologia utilizada consistiu em uma pesquisa qualitativa, documental, composta também pela análise de conteúdo e por uma revisão de literatura. A pesquisa documental foi realizada por meio do site de buscas Google, no período de agosto de 2011 a setembro de 2014. Após o levantamento de inúmeros sites e blogs, foram selecionados 28 textos, publicados em 11 sites e 5 blogs de 9 denominações religiosas cristãs: Assembleia de Deus, Igreja Adventista do Sétimo Dia, Igreja Universal do Reino de Deus, Testemunhas de Jeová, Igreja Evangélica de Confissão Luterana no Brasil (IECLB), Igreja Batista Lagoinha, Igreja Evangélica Cristã, Igreja Presbiteriana do Brasil e Igreja Católica Apostólica Romana. O resultado da análise destes textos possibilitou uma visão acerca de pontos de vista e relações doutrinárias em relação às temáticas pesquisadas. As denominações religiosas cristãs que abordaram a temática do Criacionismo e do Evolucionismo apresentaram um posicionamento contrário à Teoria da Evolução de Charles Darwin, pois alegaram que as teorias científicas acerca da origem do mundo e das espécies são conflitantes com o Criacionismo, ou seja, a versão do livro de Gênesis, presente na Bíblia. Em relação aos direitos sexuais e reprodutivos e questões de gêneros, os textos analisados apresentaram, em sua maioria, um posicionamento contrário à homossexualidade, anticoncepção, realização do aborto e de relações sexuais antes do casamento. Concluiu-se que a presença de conteúdos religiosos no currículo e no cotidiano escolar das escolas públicas pode gerar conflitos com os conteúdos científicos propostos pelo Ministério da Educação, comprometendo a qualidade de ensino.

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As tecnologias para automatização de tarefas são ferramentas valiosas para garantir a correta execução de processos bem como a obtenção dos resultados esperados. Este projeto visa desenvolver uma solução para a automatização de tarefas recorrendo à captura de imagens do ecrã, à elaboração de uma sequência de ações/tarefas definidas pelo utilizador de modo a detetar falhas e garantir a obtenção dos resultados esperados no fim da execução da tarefa. Este projeto pretende apoiar a realização de testes de software, servindo de apoio à análise do nível de qualidade e fiabilidade de software, permitindo a redução do tempo despendido por parte dos utilizadores/programadores na realização dos testes ou mesmo em tarefas que se pretendam fazer.

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* This publication is partially supported by the Bulgarian Ministry of Education (contract БОЕ 4-02/2004)

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Background/aims: Retinal screening programmes in England and Scotland have similar photographic grading schemes for background (non-proliferative) and proliferative diabetic retinopathy, but diverge over maculopathy. We looked for the most cost-effective method of identifying diabetic macular oedema from retinal photographs including the role of automated grading and optical coherence tomography, a technology that directly visualises oedema. Methods: Patients from seven UK centres were recruited. The following features in at least one eye were required for enrolment: microaneurysms/dot haemorrhages or blot haemorrhages within one disc diameter, or exudates within one or two disc diameters of the centre of the macula. Subjects had optical coherence tomography and digital photography. Manual and automated grading schemes were evaluated. Costs and QALYs were modelled using microsimulation techniques. Results: 3540 patients were recruited, 3170 were analysed. For diabetic macular oedema, England's scheme had a sensitivity of 72.6% and specificity of 66.8%; Scotland 's had a sensitivity of 59.5% and specificity of 79.0%. When applying a ceiling ratio of £30 000 per quality adjusted life years (QALY) gained, Scotland's scheme was preferred. Assuming automated grading could be implemented without increasing grading costs, automation produced a greater number of QALYS for a lower cost than England's scheme, but was not cost effective, at the study's operating point, compared with Scotland's. The addition of optical coherence tomography, to each scheme, resulted in cost savings without reducing health benefits. Conclusions: Retinal screening programmes in the UK should reconsider the screening pathway to make best use of existing and new technologies.

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A pénzügyi modellek jelentős része feltételezi a piacok hatékony működését. Ennek következtében számos tudományos kutatás központi témája volt a piacok hatékonyságának tesztelése és ennek igazolása, esetleg cáfolata. Ezen próbálkozások azonban mind a mai napig eredménytelenül zárultak. A tesztelések nyomán a kutatások a termékek áralakulásából indultak ki, és a hozamokat ezen keresztül elemezték. Az elmúlt években azonban a fókusz átterelődött az árak alakulásáról egy elemibb tényezőre, az ajánlati könyvre. Ugyanis végső soron az ajánlatvezérelt piacokon az árakat az ajánlati könyvbe benyújtott megbízások alakulása fogja meghatározni. Mivel a tőzsdék jelentős része ajánlatvezérelt piacként működik, ezért érdemesnek tartották a kutatók, hogy inkább az ajánlati könyv alakulásának statisztikai jellemzőit elemezzék, hátha az eredményre vezet, és sikerül közelebb jutni a hatékony piacok elméletének igazolásához vagy cáfolatához. Jelen tanulmány célja az, hogy az eddig megjelent tudományos kutatások alapján ismertesse az ajánlati könyv alapvető statisztikai tulajdonságait, és rávilágítson arra: mindez valójában hozzájárult-e a hatékony piacok elméletének igazolásához? ______ Most of the fi nancial models assume that markets are effi cient. As a result, numerous scientifi c researchers were focused on testing the effi cient market hypothesis, and tried to prove, or deny it. However, all these attempts are still unsuccessful. During these researches, the analyses of the effi cient market hypothesis were based on the price evolution of a certain asset, and through this the returns were examined. In the recent years the research interest has changed, and instead of analyzing the returns, a more primary factor got into focus, namely the limit order book. The reason is that on order driven markets the prices and the order sizes in the limit order book infl uence the price evolution on the market. Since a notable number of stock markets operate as an order driven market, the researchers thought that it worth analyzing the statistical properties of the limit order book, because maybe it will get us closer to the proof of the effi cient market hypothesis. The purpose of this study is to summarize the statistical properties of the limit order book, based on the scientifi c works published so far. The study would like to highlight whether these studies contributed to the proof or disproof of the effi cient market hypothesis.

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Due to the impending shortage of qualified candidates for administrator positions, school districts are faced with the challenge of attracting and preparing candidates for the administrator role. This empirical study focused on leadership succession planning and leadership development in response to meeting the demands of the social preoccupation of accountability.

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Several factors can increase or decrease military-economic involvement in communist regimes. This anomalous form of military behavior, labeled as the Military Business Complex (MBC), emerged in various communist regimes in the 1980s. However, in early 2000s, the communist governments of China and Vietnam began to decrease the number of military-managed industries, while similar industries increased in Cuba. This paper explains why military industries in Cuba have increased over the last two decades, while they decreased in the Chinese and Vietnamese examples. This question is answered by comparatively testing two hypotheses: the Communist Party and the Bureaucratic-Authoritarian (BA) Hypotheses. The Communist Party hypotheses helps explain how the historical and current structures of Party oversight of the military have been lacking in strength and reliability in Cuba, while they traditionally have been more robust in China and Vietnam. The BA hypotheses helps explain how, due to the lack of a strong civilian institutional oversight, the Cuban military has grown into a bureaucratic entity with many political officers holding autonomous positions of power, an outcome that is not prevalent in the Chinese and Vietnamese examples. Thus, with the establishment of a bureaucratic military government and with the absence of a strong party oversight, the Cuban military has been able to protect its economic endeavors while the Chinese and Vietnamese MBC regimes have contracted.

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Photo from the Wolfsonian ArtBasel event on 12/2/2052