876 resultados para dS vacua in string theory
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Este estudo teve como objetivo geral analisar a qualidade de vida e suas representações em momentos distintos de diagnóstico entre pessoas que vivem com o HIV/aids, no município de Rio das Ostras, Rio de Janeiro. O estudo foi apoiado na teoria das representações sociais associada ao constructo da qualidade de vida. Realizou-se estudo quali-quantitativo, desenvolvido no Programa de DST, AIDS e Hepatites Virais do município de Rio das Ostras, tendo como sujeitos e amostra 100 pessoas que viviam com HIV/aids. A amostra foi estratificada, contando com 50 pessoas com tempo de diagnóstico de até 6 meses e 50 superior a 6 meses. A coleta de dados se deu através da aplicação de um questionário de caracterização socioeconômica e clínica, instrumento WHOQOL-HIV-Bref e entrevistas semiestruturadas, durante o período compreendido entre os meses de maio de 2013 a janeiro de 2014. Todos os sujeitos responderam aos dois primeiros instrumentos, e para as entrevistas foi constituída uma subamostra de 40 pessoas, igualmente distribuídas em dois grupos de acordo com o tempo de diagnóstico. A análise dos dados foi realizada através de estatística descritiva e inferencial utilizando o software SPSS 17.0. A análise das representações sociais foi apoiada pelo software Alceste 4.10. O grupo estudado caracterizou-se igualitariamente entre os sexos, com orientação religiosa evangélica (36%), média de idade de 37,6 anos, residentes no município de tratamento (89%), escolaridade fundamental e média incompleta (48%), empregados (65%), com renda pessoal média de R$ 1.077,00, com tempo de diagnóstico menor que quatro anos (68%), em uso de terapia antirretroviral (74%) e tempo de uso de terapia antirretroviral menor que quatro anos (52%). Os resultados da análise da qualidade de vida demonstraram que os escores dos domínios espiritualidade/religião/crenças pessoais (14,61) e relações sociais (14,52) apresentaram as maiores médias brutas, dentre aquelas com tendência positiva de avaliação. As médias mais baixas recaíram nos domínios nível de independência (13,77) e meio ambiente (13,29). Observou-se que o tempo de diagnóstico não interferiu nos escores de qualidade de vida da amostra. A representação da qualidade de vida revelou-se constituída por conteúdos associados às expectativas futuras, qualidade de vida frente ao diagnóstico, enfrentamento, uso do antirretroviral, transmissão e prevenção. Nesses conteúdos observou-se que essa representação compartilha significados, apontando para a hipótese de representação não autônoma em relação a representação social da aids. Conclui-se que o grupo possui mecanismos de adaptação à situação vivenciada, revelando percepção da necessidade de autocuidado e manutenção de uma rede de apoio alicerçada na espiritualidade/religiosidade e nas relações sociais, o que faz crer existir um caminhar progressivo para novos sistemas de interpretação, regendo relações mais positivas e objetivadas na representação social da qualidade de vida.
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O controle interno está associado ao contexto da governança das organizações. Na administração pública brasileira, compete aos Poderes Executivo, Legislativo e Judiciário a manutenção de um sistema de controle interno integrado, conforme previsto na Constituição Federal. Os aspectos relacionados à governança são contemplados na Teoria da Agência, em que a relação entre principal e agente é marcada pela assimetria de informações e pelos conflitos de interesse. O objetivo deste estudo é investigar a evidenciação de princípios de governança nos relatórios de auditoria elaborados pelo órgão de controle interno da Marinha do Brasil. Trata-se de pesquisa descritiva, documental e ex post facto, conduzida pelo método de estudo de caso no Centro de Controle Interno da Marinha (CCIMAR). Devido à quantidade de material disponibilizado pelo órgão, o estudo foi limitado à investigação dos relatórios de auditoria de avaliação da gestão de 2012, tendo as unidades auditadas sido previamente selecionadas pelo Tribunal de Contas da União (TCU). Em 2012, o CCIMAR produziu seis relatórios de auditoria de avaliação da gestão, representando, portanto, a amostra de conveniência desta pesquisa. Para orientar a investigação, definiu-se um quadro de referência contemplando e integrando os princípios de governança abordados pelos seguintes estudos: Cadbury Committee (1992); Nolan Committee (1995); Ministério das Finanças da Holanda Timmers (2000); IFAC (2001); ANAO (2003); OECD (2004); e IBGC (2009). Os princípios finalmente selecionados para investigação foram Accountability, Equidade, Integridade e Transparência, associados, respectivamente, às palavras-chave prestação (ões) de contas / prestar contas, tratamento justo, confiabilidade / fidedignidade das informações / dos dados e disponibilidade / divulgação das informações / dos dados, definidas pelos contextos dos significados destacados no quadro de referência. Sendo assim, os princípios e as palavras-chave formaram o referencial de análise para investigar os relatórios de auditoria e receberam tratamento quanti-qualitativo. Após exame das ocorrências dos princípios e das palavras-chave nos relatórios compulsados, os resultados indicaram que: (1) o princípio da Accountability estava associado ao cumprimento de prazos e formalidades legais requeridas nos processos de prestação de contas públicas; (2) o princípio da Equidade foi evidenciado, essencialmente, na perspectiva interna das unidades auditadas, sendo percebido nas recomendações que contemplavam a atuação mais consistente e efetiva dos respectivos conselhos de gestão no gerenciamento das organizações; (3) o princípio da Integridade foi abordado nos relatórios tanto como atributo pessoal (integridade moral) dos agentes públicos, quanto como característica necessária das informações reportadas nos documentos emitidos pelos órgãos públicos; e (4) a Transparência foi mencionada como o princípio que proporciona a diminuição da assimetria informacional entre os stakeholders, permitindo que tenham acesso às informações relevantes, tais como a aplicação dos recursos públicos destinados às organizações da Marinha do Brasil.
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Falar da humanização é retomar a tradição do ocidente de pensar o lugar que o ser humano ocupa no mundo, nas inter-relações com seus semelhantes, na esfera social e também de saúde, em uma ética e solidariedade. Para uma prática de cuidados humanizada, o início destes cuidados deve ocorrer com o acolhimento do usuário em todos os setores, entre eles o Centro Cirúrgico. Este estudo tem como objetivo geral: compreender o processo de acolhimento no cotidiano da assistência de enfermagem no Centro Cirúrgico a partir da diretriz: acolhimento, ambiência e clínica ampliada da Política Nacional de Humanização. E como objetivos específicos: descrever o acolhimento do usuário durante as práticas cotidianas do cuidado de enfermagem no Centro Cirúrgico; analisar as experiências de acolhimento na perspectiva dos usuários no Centro Cirúrgico durante as práticas cotidianas do cuidado de enfermagem e identificar as estratégias utilizadas durante o cuidado de enfermagem no Centro Cirúrgico que concretizam a viabilização da diretriz: acolhimento, ambiência e clínica ampliada. Para dar conta do estudo selecionamos a abordagem etnometodológica, caráter exploratório. O cenário do estudo foi um hospital da rede estadual do Rio de Janeiro e os dados foram coletados por meio de entrevista semiestruturada realizada com 18 usuários em pós-operatório e observação participante no Centro Cirúrgico. Em seguida submetidos à análise de conteúdo de Bardin, emergindo três categorias: A recepção do usuário no Centro Cirúrgico; caracterização da realização do acolhimento na recepção do Centro Cirúrgico na perspectiva do usuário e estratégias de cuidado direcionadas para ambiência, acolhimento e clínica ampliada. Conclui-se que compreender o processo de acolhimento no cotidiano da assistência de enfermagem somente foi possível pelo compartilhamento de experiências de usuários que utilizaram os serviços da unidade. O cuidado de enfermagem neste ambiente foi identificado a partir de duas práxis: na recepção do paciente para cirurgia eletiva e diferentemente para cirurgia de emergência. O ambiente do Centro Cirúrgico gera no usuário uma gama de sentimentos e há um imaginário em torno do evento cirúrgico e deste espaço. No que se refere à diretriz, o cuidado de enfermagem neste setor atende parcialmente ao que esta estabelecido. Um caminho para a viabilização da PNH e da diretriz: acolhimento, ambiência e clínica ampliada é a educação continuada em serviço que deve não somente dispor da política em sua teoria, mas desenvolver métodos para que a torne concreta e palpável promovendo melhoria no cuidado de enfermagem.
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A tese a seguir possui como tema norteador a questão da fundamentação do conhecimento em Edmund Husserl. No interior da fenomenologia husserliana, o questionamento epistemológico é colocado em novos termos, na medida em que ele passará a pressupor uma superação do lapso entre sujeito e objeto, bem como do consequente problema do acesso à realidade, tal como instaurados pelo pensamento moderno. Portanto, todo o nosso trabalho consiste em uma confrontação e reapropriação crítica de conceitos decisivos para a teoria do conhecimento, tais como os de, sentido, objeto, consciência, transcendência, entre outros.
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The purpose of this paper is to highlight the central role that the time asymmetry of stability plays in feedback control. We show that this provides a new perspective on the use of doubly-infinite or semi-infinite time axes for signal spaces in control theory. We then focus on the implication of this time asymmetry in modeling uncertainty, regulation and robust control. We point out that modeling uncertainty and the ease of control depend critically on the direction of time. We finally discuss the relationship of this control-based time arrow with the well-known arrows of time in physics. © 2008 IEEE.
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The Bayesian perspective of designing for the consequences of hazard is discussed. Structural engineers should be educated in Bayesian theory and its underlying philosophy, and about the centrality to the prediction problem of the predictive distribution. The primary contribution that Bayesianism can make to the debate about extreme possibilities is its clarification of the language of and thinking about risk. Frequentist methodologies are the wrong approach to the decisions that engineers need to make, decisions that involve assessments of abstract future possibilities based on incomplete and abstract information.
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The permeability of asphalt concrete has been the subject of much study by pavement engineers over the last decade. The work undertaken has tended to focus on high air voids as the primary indicator of permeable asphalt concrete. This paper presents a simple approach for understanding the parameters that affect permeability. Principles explained by Taylor in 1956 in channel theory work for soils are used to derive a new parameter-representative pore size. Representative pore size is related to the air voids in the compacted mix and the D75 of the asphalt mix grading curve. Collected Superpave permeability data from published literature and data collected by the writers at the Queensland Department of Transport and Main Roads is shown to be better correlated with representative pore size than air voids, reducing the scatter considerably. Using the database of collected field and laboratory permeability values an equation is proposed that pavement engineers can use to estimate the permeability of in-place pavements. © 2011 ASCE.
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A fundamental problem in the analysis of structured relational data like graphs, networks, databases, and matrices is to extract a summary of the common structure underlying relations between individual entities. Relational data are typically encoded in the form of arrays; invariance to the ordering of rows and columns corresponds to exchangeable arrays. Results in probability theory due to Aldous, Hoover and Kallenberg show that exchangeable arrays can be represented in terms of a random measurable function which constitutes the natural model parameter in a Bayesian model. We obtain a flexible yet simple Bayesian nonparametric model by placing a Gaussian process prior on the parameter function. Efficient inference utilises elliptical slice sampling combined with a random sparse approximation to the Gaussian process. We demonstrate applications of the model to network data and clarify its relation to models in the literature, several of which emerge as special cases.
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The reduced divergence angle of the photonic crystal vertical-cavity surface-emitting laser (PC-VCSEL) was investigated in both theory and experiment. The photonic crystal waveguide possessed the weakly guiding waveguide characteristic, which accounted for the reduction of the divergence angle. The three-dimensional finite-difference time-domain method was used to simulate the designed PC-VCSEL, and a calculated divergence angle of 5.2 degrees was obtained. The measured divergence angles of our fabricated PC-VCSEL were between 5.1 degrees and 5.5 degrees over the entire drive current range, consistent with the numerical results. This is the lowest divergence angle of the fabricated PC-VCSEL ever reported.
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We give a general SU(2)(L) x SU(2)(R) x U(1)(EM) sigma model with external sources, dynamical breaking and spontaneous vacuum symmetry breaking, and present the general formulation of the model. It is found that sigma and pi(0) without electric charges have electromagnetic interaction effects coming front the internal structures. A general Lorentz transformation relative to external sources J(gauge) - (J(A mu) J(A mu)(kappa)) derived, using the general Lorentz transformation and the four-dimensional current of nuclear matter of the ground si ate with J(gauge) = 0, we give the four-dimensional general relations between the different currents of nuclear matter systems with J(gauge) not equal 0 and those with J(gauge) = 0. The relation of the density's coupling with external magnetic field is derived, which conforms well to dense nuclear matter in a strong magnetic field. We show different condensed effects in strong interaction about fermions and antifermions, and give the concrete scalar and pseudoscalar condensed expressions of sigma(0) and pi(0) bosons. About different dynamical breaking and spontaneous vacuum symmetry breaking, the concrete expressions of different mass spectra are obtained in field theory. This paper acquires the running spontaneous vacuum breaking value sigma'(0), and obtains the spontaneous vacuum breaking in tenus of the running sigma'(0), which make nucleon, sigma, and pi particles gain effective masses. We achieve both the effect of external sources and nonvanishing value of the condensed scalar and pseudoscalar paticles. It is deduced that the masses of nucleons, sigma and pi generally depend on different external sources.
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Dextran sulfate (DS)/poly-L-lysine (PLL) microcapsules are fabricated by an in situ coacervation method using DS-doped CaCO3 microparticles as templates. Twinned superstructures or spherical CaCO3 microparticles are produced depending on DS concentration in the starting Solution. DS/PLL microcapsules with ellipsoidal or spherical outline are obtained after removal of templates in disodium ethylene diamine tetraacetate dehydrate (EDTA) without PLL. Their shell thickness and negative surface charges increase with the DS weight percentage in the templates. The surface potential of DS/PLL microcapsules.
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The long-term variations in the strength of the geomagnetic field provide important constraints on the chemical-physical processes of the Earth’s interior. Especially, the intensity of the geomagnetic field during the Cretaceous normal superchron (CNS) is crucial to understand the geodynamo. But a paucity of paleointensity further limits to obtain essential knowledge interior process in the deep earth. In order to improve the experimental efficiency, this study tried to apply two new rock magnetic methods (FORC diagram and low-temperature demagnetization technique) to determine the paleointensity. First, some problems in the theory and technique in paleointensity experiments were introduced. A combined palaeomagnetic and geochronologic study was further conducted on a basaltic lava sequence at Jianchang in Liaoning Province, northeastern China. Radiometric 40Ar/39Ar dating indicates that the volcanism occurred at about 119 Ma within the marine anomaly C34n in Cretaceous normal superchron (CNS). Rock magnetic investigations show that pseudo-single domain (PSD) titanium-poor titanomagnetite is dominant in the studied lava flows. Both stepwise thermal and alternating field demagnetizations isolate the well-defined normal characteristic remanent magnetization (ChRM) in three independent lava flows with a mean direction of D/I = 6.0/51.9 degree(a95 = 12.3degree). Palaeointensity was determined using the modified Thellier method with systematic partial thermoremanent magnetization (pTRM) checks on total 72 samples, but only 10 samples exhibit ideal linear behavior on the Arai-plot in the temperature interval of 300-560 C and yield an average paleointensity of (25.8+/-1.4)uT. In addition, slopes of the line defined by the initial and the final points on the Arai-plot for the other 18 samples with characteristic PSD features give an average paleointensity estimation value of (24.8+/-1.9)uT. The consistency of these two approaches confidently demonstrates the fidelity of our results. The overall mean field strength determined using both approaches are thus estimated to be (25.2+/-0.7 )uT. This value corresponds to the virtual dipole magnetic moments (VDM) of (4.5+/-0.1)E22 Am^2, which is about half of the value of present field. This finding suggests that palaeointensity just at the onset of the CNS is characterized by a weak magnetic field.
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Jurassic is an important hydrocarbon-bearing formation in Junggar Basin. Analyzing in strata sequence stratigraphy and hydrocarbon formation has both theoretical and practical values. First of all, strata sequence stratigraphy of continental facies is a new development and supplement in the theory of stratigraphic geology. Stratum of continental facies, unlike sea facies, has rich sup-plements, rapid facies changes, and was influenced slightly by sea level changes. The structural background and sedimentary environment of the basin in west China are greatly different from those of the basins in east China. So it is important to build the patterns of strata sequence stratigraphy in west China basins. Secondly, it is also of significance to find out all kinds of traps, for the dominant types are structural ones so far. After 50 years exploration, the stratigraphic or litholigic traps have become the main concern. This desertation is mainly focused on establishing the isochronal strtaum frame for Junggar Basin to show the evolvement characters of the basin sediment system and the regionalstuctrue background. By analyzing the conditions and patterns of the regional oil and gas bearing formations with typical cross-sections, we have established the patterns of sedimentary conditions for different reserviors. By authur's study, several fruitful results have been obtained in the following: Strata sequence frame and evolvement characteristics of Jurassic: By studing strata sequence, Jurassic has been divided into 2 second rank strata sequences and 3 third rank strata sequences based on the interface unconformities. Only 2 fourth rank strata sequences were grouped in BaDaoWan group. Also different seismic facies and sediment units have been recognized with the establishment of the of sediment system model. The oil-gas system characteristics in Jurassic: We conclude that hydrocar bon resources have the best oil potential. Potential of coal, carbonaceous and dark mudstone were reduced in turn. In this thesis we have made the evaluation of three hydrocarbon sources and the distribution oil-gas resource, and studied the potentials of hydrocarbon and evolvement for each kind of micro-component of the two main resource rocks. Prediction of paleo-temperature: In Junggar basin the evolvement of paleo-ground temperature can be divided into three stages. From Carboniferous to early Permian grads of ancient ground temperature was 8-5 ℃/100m, 5-3 ℃/100m from later period of Permian to end Trias, 3-2 ℃/100m from Jurassic to early Tertiary. Patterns of Jurassic hydrocarbon-bearing reserviors: There were two kinds of hydrocarbon source of Permian and Jurassic. They form different hydrocarbon - bearing systems. Six fundamental hydrocarbon - bearing trap modeS have been established. Directions for later exploration: There were two kinds of regional belts in Jurassic, One is structural belt caused by Yanshan and Ximalaya process, and the other was the stratum one caused by paleostructural rises.
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Oil and gas exploration of marine strata in China's Pre-Cenozoic residual basins is regarded as a worldwide puzzle because of existent problems and cruxes. Objectively speaking, the subsurface geologic structure is complicated, and the surface conditions of some areas are tough. On the other hand, there are still many problems to be solved in oil and gas exploration technologies of Pre-Cenozoic marine fades, and theoretic cognition about petroleum geology is not profound yet. Therefore, it is principal to explore integrated geophysical research ways of Pre-Cenozoic residual basins. Seismic prospecting and geophysical integrated interpretation technologies aimed at middle Paleozoic marine facies with deeper burial and complicated geologic conditions have not formed due to bad quality of deep strata data. Pre-Cenozoic strata, and especially extension, thickness and internal structure of Paleozoic strata can not be recognized from seismic profiles, so it is hard to systematically cognize structural features and oil-gas resources prospect of Pre-Cenozoic basins. To further investigation of fabric and structural features, basin prototype, formation and evolution pattern of Pre-Cenozoic basins, and also their control over formation, migration and aggregation of oil and gas, will play a guiding and promotive role in developing new surveying areas, selecting advantageous zones and predicting oil-gas resources.This paper follows the modem macrocontrol theory of "Region constrains local, deep strata controls shallow ones", and uses the integrated geophysical method of "One guide, two hinges, three combinations and multi feedbacks'*. Based on several years of geological and geophysical results of the Shengli Oilfield, and 14 newly-joint regional seismic profiles, deep structure and oil-gas bearing capacity of the Jiyang area are discussed and new cognitions are drawn as below.Seismic identification marks Tr, Tg, Tgl and Tg2 are established for importantPre-Cenozoic geological interfaces, and promoted to the whole Jiyang area.Through area-wide tracking and clogging of important seismic reflection marker,the isochronic framework of pre-Tertiary basin is set up in the Jiyang area for the firsttime, which is vital for basin research.Integrated with geological and geophysical research results, the Jiyang area isdivided into four first-order tectonic sequences- basement, lower tectonic layer,upper tectonic layer, and top tectonic layer. The basement and lower tectonic sequence which are related to Pre-Cenozoic are studied with emphasis.Through the research of regional seismic profiles, the point of view is given thatthe Kongdian Formation of Jiyang is structural transition period. The top-bottomunconformable interface of the Kongdian Formation is found out for the first time,and the basin model is determined primarily, which lay a basis for prototype basinresearch of the Jiyang Kongdian Formation.The distribution status of Middle-Paleozoic is delineated in the Jiyang area.The maximum thickness of Paleozoic lies in the top of the south declivity of half-graben. The thickness gets thinner towards the center of Mesozoic and Cenozoic half-graben basin, and even disappears. Structural action in the west-north affects the distribution of Paleozoic residual strata.6. The features of second-order tectonic sequence of the Jiyang depression isstudied and its evolution history of is rebuilt.Combined with the 5-stage evolution history of the China continent and structure evolution features of the Jiyang area, the structure sedimentary process since Paleozoic is divided into 5 periods - basement forming , Indosinian orogenic, Yanshan negative reversal, Himalayan extension and Neogene subsidence period.Combined with the research results of gravity, magnetic surveying and regionalprofiles, this paper brings forward the idea for the first time that the western boundaryof the Jiyang depression is the Ningjin-Yangpan fracture zone, and forms aside-column assemblage with the Wudi fracture zone.The opinion that under Middle-Cenozoic basins in the middle Jiyang area theremight superimpose an old residual basin is given for the first time. And if it is provedto be true, a new exploration space will be pioneered for Jiyang and even north China.There exists many types of tectonic-stratigraphic traps formed under piezotropy,extension and compound action in Pre-Cenozoic Jiyang. Therein all kinds of burialhills are the most important oil-gas trap type of Pre-Cenozoic, which should besurveyed layeredly according to the layout of oil sources.As such a new challenging project and field, the paper systematically analyses different geophysical responses of the Jiyang area, frames the deep structure of the area, and preliminarily recognizes the Pre-Cenozoic residual basins. It breaks through to a certain extent in both theory and practice, and is expected to provide new geophysical and geotectonic clues for deep exploration in Shengli.
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Risk perception is one of important subjects in management psychology and cognitive psychology. It is of great value in the theory and practice to investigate the social risk events that the public cares a lot especially in this social transition period. Furthermore, this study explored the factors that influence the risk perception and the results caused by risk perception. A survey including 30 hazards and 8 risk attributes was designed and distributed to about 3, 200 residents of 8 districts, Beijing. The major findings are listed as following: Firstly, combining the methods of system science and psychology, GAE program was used to indentify 7 groups of social risk events, such as national safe, government management, social stability, general mood of society, economic and finance, resources and environment & daily life problems. This study provided substance for the following studies and it was also a new attempt in research method which is of certain reference value for the related researches. Secondly, a scale of societal risk perception was designed and 2 factors were identified (Dread Risk & Unknown Risk). Reliability analysis, EFA and CFA show the reliability and validity of the societal risk questionnaire is good enough. The investigation using this scale showed that older participants and higher socioeconomic status perceived the societal hazards to be more threatening than did younger participants and lower socioeconomic status. However, there is no gender difference. Thirdly, structural equation model was used to analyze the influence factors and mechanism of societal risk perception. Risk taking, government support and social justice could influence societal risk perception directly. Government support moderated the relationship between government trust and societal risk perception. Societal risk perception influenced life satisfaction, public policy preferences and social development belief. Multi-group analysis was used to find out that the participants who have different socioeconomic status express different mechanism. Fourthly, the result of the research was used to explore the risk event of 2008 Olympic game. The results showed that government support and preparation of Olympic game influenced societal risk perception directly. Preparation moderated the relationship between government trust and risk perception. Risk perception influenced worry, effect of Olympic game and belief of successl. This result proved that risk perception could be used as an indicator. The indictor of risk perception was used to identify the characteristics of higher risk perception group. Finally, suggestions to the related decision were provide to the government.