982 resultados para Key derivation function


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IntroductionThe objective of this study was to analyze the spatial behavior of the occurrence of trachoma cases detected in the City of Bauru, State of São Paulo, Brazil, in 2006 in order to use the information collected to set priority areas for optimization of health resources.Methodsthe trachoma cases identified in 2006 were georeferenced. The data evaluated were: schools where the trachoma cases studied, data from the 2000 Census, census tract, type of housing, water supply conditions, distribution of income and levels of education of household heads. In the Google Earth® software and TerraView® were made descriptive spatial analysis and estimates of the Kernel. Each area was studied by interpolation of the density surfaces exposing events to facilitate to recognize the clusters.ResultsOf the 66 cases detected, only one (1.5%) was not a resident of the city's outskirts. A positive association was detected of trachoma cases and the percentage of heads of household with income below three minimum wages and schooling under eight years of education.ConclusionsThe recognition of the spatial distribution of trachoma cases coincided with the areas of greatest social inequality in Bauru City. The micro-areas identified are those that should be prioritized in the rationalization of health resources. There is the possibility of using the trachoma cases detected as an indicator of performance of micro priority health programs.

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Traditional approaches to evaluate performance in hotels, have mainly used financial measures. Building on Speckbacher et al. (2003), this Work Project aims to design and propose a Balanced Scorecard Type II as a performance measurement/management system for the hospitality industry based on data collected at the Luxury Brand Hotels of Pestana Group. The main contribution is to better align the vision, strategy and financial and non-financial performance measures in this category of hotels, in particular those of Pestana Group, and by doing so, lead their managers to focus on what is really critical and, consequently improve the overall performance.

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The Purpose of this Work Project is to develop a Marketing plan, with a special focus on promotional activities and partnerships’ developments, for the Big Slice, a fast food Pizzeria that is currently operating in Lisbon, where I'm currently working in the marketing and promotion department. The project aims at developing promotions and key partnerships that maximize the opportunity. For that, I have analyzed the major trends in the food sector in Portugal, and I have conducted several qualitative interviews among young individuals. Finally I have developed and implemented various alternative promotions and established important key partnerships.

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Introduction The association between cardiac autonomic and left ventricular (LV) dysfunction in Chagas disease (ChD) is controversial. Methods A standardized protocol that includes the Valsalva maneuver, a respiratory sinus arrhythmia (RSA) test, and an echocardiographic examination was used. Spearman correlation coefficients (rho) were used to investigate associations. Results The study population consisted of 118 ChD patients undergoing current medical treatment, with an average LV ejection fraction of 51.4±2.6%. The LV ejection fraction and diastolic dimension were correlated with the Valsalva index (rho=0.358, p<0.001 and rho=-0.266, p=0.004, respectively) and the RSA (rho=0.391, p<0.001 and rho=-0.311, p<0.001, respectively). Conclusions The impairment of LV function is directly associated with a reduction of cardiac autonomic modulation in ChD.

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Due to external constraints (opposed by the market and legal system) and internal changes nonprofit organizations have been converting to for-profit entities combining commercial revenue and social value creation. To create an understanding of the conversion process considering its challenges, the reasons, the decision-making process and key success factors of a conversion are examined. Therefore, a two-step research procedure is used combining literature research and a multiple case study approach based on expert interviews with known companies. The outcome is a helpful guideline (including a decision matrix) for social entrepreneurs that might face a conversion.

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Os resultados apresentados no capítulo 2 foram incluídos no artigo Dantas JM, Campelo LM, Duke NEC, Salgueiro CA, Pokkuluri PR (2015) "The structure of PccH from Geobacter sulfurreducens – a novel low reduction potential monoheme cytochrome essential for accepting electrons from an electrode", FEBS Journal, 282, 2215-2231.

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Liver function and its correlation with bilirubin and hepatic enzymes were evaluated in 30 male chronic asymptomatic or oligosymptomatic alcoholics admitted into the psychiatric hospital for detoxification and treatment of alcoholism. Hypoalbuminemia, lowered prothrombin activity, hypotransferrinemia and hypofibrinogenemia were detected in 32 %, 32 %, 28 %, and 24 % of patients, respectively. Transferrin was elevated in 8 %. Greater prevalence of hyperbilirubinemia was found in patients with lowered prothrombin activity, hypofibrinogenemia, or hypotransferrinemia. No correlation was found between serum bilirubin or aminotransferase levels and normal or elevated albumin levels, time or activity of prothrombin, and fibrinogen levels. Serum alkaline phosphatase was elevated in normoalbuminemics and gamma-glutamyltransferase in patients with lowered prothrombin activity. Hypoalbuminemia was associated with hypofibrinogenemia, hypotransferrinemia with elevated aspartate aminotransferase or gamma-glutamyltransferase, and hypertransferrinemia with elevation of alanine aminotransferase. These data indicated the occurrence of hepatic dysfunction due to liver damage caused directly by alcohol or by alcoholism-associated nutritional deficiencies.

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Software Product Line (SPL) engineering aims at achieving efficient development of software products in a specific domain. New products are obtained via a process which entails creating a new configuration specifying the desired product’s features. This configuration must necessarily conform to a variability model, that describes the scope of the SPL, or else it is not viable. To ensure this, configuration tools are used that do not allow invalid configurations to be expressed. A different concern, however, is making sure that a product addresses the stakeholders’ needs as best as possible. The stakeholders may not be experts on the domain, so they may have unrealistic expectations. Also, the scope of the SPL is determined not only by the domain but also by limitations of the development platforms. It is therefore possible that the desired set of features goes beyond what is possible to currently create with the SPL. This means that configuration tools should provide support not only for creating valid products, but also for improving satisfaction of user concerns. We address this goal by providing a user-centric configuration process that offers suggestions during the configuration process, based on the use of soft constraints, and identifying and explaining potential conflicts that may arise. Suggestions help mitigating stakeholder uncertainty and poor domain knowledge, by helping them address well known and desirable domain-related concerns. On the other hand, automated conflict identification and explanation helps the stakeholders to understand the trade-offs required for realizing their vision, allowing informed resolution of conflicts. Additionally, we propose a prototype-based approach to configuration, that addresses the order-dependency issues by allowing the complete (or partial) specification of the features in a single step. A subsequent resolution process will then identify possible repairs, or trade-offs, that may be required for viabilization.

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We prospectively studied the effects of the ligation of the inferior thyroid artery (ITA) on postoperative hypoparathyroidism in 48 patients who underwent functional subtotal thyroidectomy. Patients were randomized into two groups: A, with bilateral ligation of the ITA and B, without ligation of the ITA. Parathyroid function was checked preoperatively and after surgery by clinical examination and measurement of total calcium, intact PTH, urinary calcium, and AMPc. RESULTS: A significant incidence of postoperative hypocalcemia occurred: 17% in group A and 13% in B on the 4th postoperative day. Six months later, the incidence was 5% in Group A and 0% in Group B. These differences were not statistically significant between the two groups, and neither were any of the other clinical and laboratory observations. CONCLUSION: The ligation of the ITA was not an important causal factor for the occurrence of postoperative hypocalcemia after subtotal thyroidectomy.

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ABSTRACT - Objectives: We attempted to show how the implementation of the key elements of the World Health Organization Patient Safety Curriculum Guide Multi-professional Edition in an undergraduate curriculum affected the knowledge, skills, and attitudes towards patient safety in a graduate entry Portuguese Medical School. Methods: After receiving formal recognition by the WHO as a Complementary Test Site and approval of the organizational ethics committee , the validated pre-course questionnaires measuring the knowledge, skills, and attitudes to patient safety were administered to the 2nd and3rd year students pursuing a four-year course (N = 46). The key modules of the curriculum were implemented over the academic year by employing a variety of learning strategies including expert lecturers, small group problem-based teaching sessions, and Simulation Laboratory sessions. The identical questionnaires were then administered and the impact was measured. The Curriculum Guide was evaluated as a health education tool in this context. Results: A significant number of the respondents, 47 % (n = 22), reported having received some form of prior patient safety training. The effect on Patient Safety Knowledge was assessed by using the percentage of correct pre- and post-course answers to construct 2 × 2 contingency tables and by applying Fishers’ test (two-tailed). No significant differences were detected (p < 0.05). To assess the effect of the intervention on Patient Safety skills and attitudes, the mean and standard deviation were calculated for the pre and post-course responses, and independent samples were subjected to Mann-Whitney’s test. The attitudinal survey indicated a very high baseline incidence of desirable attitudes and skills toward patient safety. Significant changes were detected (p < 0.05) regarding what should happen if an error is made (p = 0.016), the role of healthcare organizations in error reporting (p = 0.006), and the extent of medical error (p = 0.005). Conclusions: The implementation of selected modules of the WHO Patient Safety Curriculum was associated with a number of positive changes regarding patient safety skills and attitudes, with a baseline incidence of highly desirable patient safety attitudes, but no measureable change on the patient safety knowledge, at the University of Algarve Medical School. The significance of these results is discussed along with implications and suggestions for future research.

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The ligature of the left renal vein is an alternative whenever this vessel is injured. The purpose of this study was to evaluate the capacity of the affluents of the left renal vein, proximal to the ligature, to maintain tissue vitality and function of the left kidney. Fifteen mongrel male dogs were divided in 3 groups of 5 dogs: Group I (control) - a laparotomy was performed, and the abdominal structures were only identified; Group II - the left renal vein was tied, close to vena cava; Group III - the same procedure as for Group II and a right nephrectomy. Blood urea nitrogen and serum creatinine levels were measured before the procedure, and every 3 days during 4 weeks in the postoperative period. Renal arteriography and an excretory urogram were performed on the animals that survived 60 days. Thereafter, or immediately after precocious death, the kidneys were removed for histological examination. All the animals of Group III died before two months (mean = 10.5 +-3.2 days), while the animals of Group II survived during that period. There was a complete exclusion of the left kidney in all dogs that underwent renal vein ligature. In the animals of Group II, the renal cortico-medullary limits could not be identified. At microscopy, the aspect was suggestive of nephrosclerosis. In the animals of Group III, the left kidney was enlarged, and a great amount of intravascular and intrapelvic blood clots were observed. At microscopy, extensive areas of necrosis, inflammatory infiltration, and hemorrhage were identified. In conclusion, the tributaries of the renal vein were not sufficient to maintain the tissue vitality and function of the left kidney after ligature of its main vein.

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The cerebellum floccular complex lobes (FCLs) are housed in the FCL fossa of the periotic complex. There is experimental evidence indicating that the FCLs integrate visual and vestibular information, responsible for the vestibulo-ocular reflex, vestibulo-collic reflex, smooth pursuit and gaze holding. Thus, the behavior of extinct animals has been correlated with FCLs dimension in multiple paleoneuroanatomy studies. Here I analyzed braincase endocasts of a representative sample of Mammalia (48 species) and Aves (59 species) rendered using tomography and image segmentation and tested statistical correlations between the floccular complex volume, ecological and behavioral traits to assess various previously formulated paleobiological speculations. My results demonstrate: 1) there is no significant correlation between relative FCL volume and body mass; 2) there is no significant correlation between relative FCL and optic lobes size in birds; 3) average relative FCL size is larger in diurnal than in nocturnal birds but there is no statistically significant difference in mammals; 4) feeding strategies are related with different FCL size patterns in birds, but not in mammals; 5) locomotion type is not related with relative FCL size in mammals; 6) agility is not significantly correlated with FCL size in mammals. I conclude that, despite the apparent relation between FCL size and ecology in birds, the cerebellum of tetrapods is a highly plastic structure and may be adapted to control different functions across different taxonomic levels. For example, the european mole (Talpa europaea) which is fossorial and practically blind, has a FCL fossae relative size larger than those of bats, which are highly maneuverable. Therefore, variation in FCL size may be better explained by a combination of multiple factors with relation to anatomical and phylogenetic evolutionary constraints.

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Outrora dominado por ameaças provenientes de Estados-nação, o cenário global actual, dominado por uma rápida mudança de poderes que nos apresenta uma interacção complexa entre múltiplos actores, onde inimigos desconhecidos, anteriormente bem identificados, é actualmente controlado por grupos terroristas bem preparados e bem organizados. Hezbollah é reconhecido como um dos grupos terroristas mais capazes, com uma extensa rede fora do Líbano dedicada a tráfico de droga, armas e seres humanos, tal como o branqueamento de capitais para financiar o terrorismo, representando um grande foco de instabilidade à segurança. Como instrumento de Estado, os serviços de informações detêm a capacidade de estar na linha da frente na prevenção e combate ao terrorismo. Todavia, para compreender este fenómeno é necessário analisar os actores desta ameaça. À luz desta conjuntura, esta dissertação está dividida em três capítulos principais que visam responder às seguintes questões fundamentais: O que é o terrorismo? Como opera um grupo terrorista transnacional? Será que os serviços de informações têm as ferramentas necessárias para prevenir e combater estas ameaças?

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PURPOSE: Aerobic capacity and respiratory function may be compromised in obesity, but few studies have been done in highly obese bariatric candidates. In a prospective study, these variables were documented in the preoperative period, aiming to define possible physiologic limitations in a apparently healthy and asymptomatic population. METHOD: Forty-six consecutively enrolled adults (age 39.6 ± 8.4 years, 87.0% females, body mass index /BMI 49.6 ± 6.3 kg/m² ) were analyzed. Ventilatory variables were investigated by automated spirometry, aerobic capacity was estimated by a modified Bruce test in an ergometric treadmill, and body composition was determined by bioimpedance analysis. RESULTS: Total fat was greatly increased (46.4 ± 4.6% of body weight) and body water reduced (47.3 ± 4.6 % body weight), as expected for such obese group. Spirometric findings including forced vital capacity of 3.3 ± 0.8 L and forced expiratory volume-1 second of 2.6 ± 0.6 L were usually acceptable for age and gender, but mild restrictive pulmonary insufficiency was diagnosed in 20.9%. Aerobic capacity was more markedly diminished, as reflected by very modest maximal time (4.5 ± 1.1 min) and distance (322 ±142 m) along with proportionally elevated maximal oxygen consumption (23.4 ± 9.5 mL/kg/min) achieved by these subjects during test exercise. CONCLUSIONS: 1) Cardiopulmonary evaluation was feasible and well-tolerated in this severely obese population; 2) Mean spirometric variables were not diminished in this study, but part of the population displayed mild restrictive changes; 3) Exercise tolerance was very negatively influenced by obesity, resulting in reduced endurance and excessive metabolic cost for the treadmill run; 4) More attention to fitness and aerobic capacity is recommended for seriously obese bariatric candidates;

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Este trabalho de investigação começou por ser estruturado em torno de quatro grandes capítulos (quatro grandes linhas de orientação temática), todos eles amplamente desenvolvidos no sentido de podermos cartografar alguns dos principais territórios e sintomas da arte contemporânea, sendo certo também, que cada um deles assenta precisamente nos princípios de uma estrutura maleável que, para todos os efeitos, se encontra em processo de construção (work in progress), neste caso, graças à plasticidade do corpo, do espaço, da imagem e do uso criativo das tecnologias digitais, no âmbito das quais, aliás, tudo se parece produzir, transformar e disseminar hoje em dia à nossa volta (quase como se de uma autêntica viagem interactiva se tratasse). Por isso, a partir daqui, todo o esforço que se segue procurará ensaiar uma hipótese de trabalho (desenvolver uma investigação) que, porventura, nos permita desbravar alguns caminhos em direcção aos intermináveis túneis do futuro, sempre na expectativa de podermos dar forma, função e sentido a um desejo irreprimível de liberdade criativa, pois, a arte contemporânea tem essa extraordinária capacidade de nos transportar para muitos outros lugares do mundo, tão reais e imaginários como a nossa própria vida. Assim sendo, há que sumariar algumas das principais etapas a desenvolver ao longo desta investigação. Ora, num primeiro momento, começaremos por reflectir sobre o conceito alargado de «crise» (a crise da modernidade), para logo de seguida podermos abordar a questão da crise das antigas categorias estéticas, questionando assim, para todos os efeitos, quer o conceito de «belo» (Platão) e de «gosto» (Kant), quer ainda o conceito de «forma» (Foccilon), não só no sentido de tentarmos compreender algumas das principais razões que terão estado na origem do chamado «fim da arte» (Hegel), mas também algumas daquelas que terão conduzido à estetização generalizada da experiência contemporânea e à sua respectiva disseminação pelas mais variadas plataformas digitais. Num segundo momento, procuraremos reflectir sobre alguns dos principais problemas da inquietante história das imagens, nomeadamente para tentarmos perceber como é que todas estas transformações técnicas (ligadas ao aparecimento da fotografia, do cinema, do vídeo, do computador e da internet) terão contribuído para o processo de instauração e respectivo alargamento daquilo que todos nós ficaríamos a conhecer como a nova «era da imagem», ou a imagem na «era da sua própria reprodutibilidade técnica» (Benjamin), pois, só assim é que conseguiremos interrogar este imparável processo de movimentação, fragmentação, disseminação, simulação e interacção das mais variadas «formas de vida» (Nietzsche, Agamben). Entretanto, chegados ao terceiro grande momento, interessa-nos percepcionar a arte contemporânea como uma espécie de plataforma interactiva que, por sua vez, nos levará a interpelar alguns dos principais dispositivos metafóricos e experimentais da viagem, neste caso, da viagem enquanto linha facilitadora de acesso à arte, à cultura e à vida contemporânea em geral, ou seja, todo um processo de reflexão que nos incitará a cartografar alguns dos mais atractivos sintomas provenientes da estética do flâneur (na perspectiva de Rimbaud, Baudelaire, Long e Benjamin) e, consequentemente, a convocar algumas das principais sensações decorrentes da experiência altamente sedutora daqueles que vivem mergulhados na órbita interactiva do ciberespaço (na condição de ciberflâneurs), quase como se o mundo inteiro, agora, fosse tão somente um espaço poético «inteiramente navegável» (Manovich). Por fim, no quarto e último momento, procuraremos fazer uma profunda reflexão sobre a inquietante história do corpo, principalmente com o objectivo de reforçar a ideia de que apesar das suas inúmeras fragilidades biológicas (um ser que adoece e morre), o corpo continua a ser uma das «categorias mais persistentes de toda a cultura ocidental» (Ieda Tucherman), não só porque ele resistiu a todas as transformações que lhe foram impostas historicamente, mas também porque ele se soube reinventar e readaptar pacientemente face a todas essas transformações históricas. Sinal evidente de que a sua plasticidade lhe iria conferir, principalmente a partir do século XX («o século do corpo») um estatuto teórico e performativo verdadeiramente especial. Tão especial, aliás, que basta termos uma noção, mesmo que breve, da sua inquietante história para percebermos imediatamente a extraordinária importância dalgumas das suas mais variadas transformações, atracções, ligações e exibições ao longo das últimas décadas, nomeadamente sob o efeito criativo das tecnologias digitais (no âmbito das quais se processam algumas das mais interessantes operações de dinamização cultural e artística do nosso tempo). Em suma, esperamos sinceramente que este trabalho de investigação possa vir a contribuir para o processo de alargamento das fronteiras cada vez mais incertas, dinâmicas e interactivas do conhecimento daquilo que parece constituir, hoje em dia, o jogo fundamental da nossa contemporaneidade.