477 resultados para trasformata Bargmann discreta
Resumo:
Esta pesquisa busca abordar e analisar os caminhos da mídia televisiva nas igrejas Assembleias de Deus no Brasil, aqui trabalhadas no plural devido às muitas ramificações da denominação, em suas construções das representações simbólicas, imaginárias, culturais e midiáticas. O objetivo é analisar a dimensão simbólica na proibição do uso da televisão na denominação religiosa em questão, e os argumentos para o veto entre os fiéis, a discreta aceitabilidade da TV diante das novas concepções teológicas das ADs ao longo dos anos, investimento em canal aberto (Rede Boas Novas de Televisão) e proposta de um programa televisivo como marca midiática da denominação (Programa Movimento Pentecostal). Para viabilidade desse trabalho, a metodologia adotada consiste em pesquisa bibliográfica histórica, com foco nos temas fundamentais para o desenvolvimento das pesquisas do imaginário, identidade, cultura, nação e televisão, aliada à pesquisa documental, que tem como meta os registros históricos, que melhor elucidarão os caminhos e a ligação da TV com as Assembleias de Deus.
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Este trabalho investigou o efeito das informações dadas ao paciente no período pré-operatório de cirurgia de revascularização do miocárdio sobre a evolução clínica no período pós-operatório imediato, avaliando 15 pacientes do Hospital de ensino da fundação do ABC, em São Bernardo do Campo. A ansiedade no período pré-operatório foi comparada com a do pós-operatório em dois grupos: um tendo recebido informações detalhadas e específicas referentes ap pré-operatório, intra-operatório e pós-operatório, e outro tendo recebido informações gerais sobre o momento em que encontrava. Para tal, foram utilizados questionários semi-estruturados e um informativo completo com informações específicas e outro com informações gerais, além da avaliação do prontuário do paciente. Para a avaliação da ansiedade foi aplicado o Inventário de Ansiedade Traço e Estado (EDATE). Os achados mostram uma discreta tendência à diminuição da ansiedade no período pós-operatório nos pacientes dos dois grupos, indicando que a informação técnica não fez diferença para a população estudada.
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A avaliação e monitorização de sinais vitais é uma ferramenta fundamental utilizada na medicina, principalmente no que se relaciona com o estado físico do indivíduo. A evolução constante da tecnologia assumiu um papel central na evolução de produtos ligados ao contexto médico, que atualmente assumem-se como produtos do quotidiano. Existiu também uma alteração do paradigma, ou seja, produtos anteriormente utilizados exclusivamente na medicina, agora usados em atividades diárias. A preocupação da monitorização de sinais vitais é uma temática emergente, uma vez que uma análise correta destes dados permite intervir precocemente em aspetos que melhoram a qualidade de vida do indivíduo. A prevenção tornou-se um fator essencial, visto que os utilizadores interagem com estes produtos no quotidiano. Esta necessidade leva ao aparecimento de novos produtos, que estejam ligados à atividade diária do indivíduo. É neste paradigma que a solução se apresenta, a interação do produto com o utilizador de forma discreta e menos intrusiva, oferecendo maior conforto e funcionalidade. Assim sendo, o designer deve perceber os princípios de funcionamento dos componentes que permitem recolher informação sobre os sinais vitais e ambientais. O papel do design neste projeto de investigação passou pelo desenvolvimento de uma solução para monitorização da dinâmica corporal no período do sono, de forma a contribuir para a prevenção da apneia do sono. A solução divide-se em três elementos, que interligados, proporcionam ao utilizador um controlo do período de sono. Os elementos são: tapete de mapeamento de pressão, um monitor de sono, e uma aplicação móvel. Os aspetos ergonómicos e funcionais foram tidos em conta na conceção do produto assim como a aplicação de métodos de desenvolvimento de produto, com o intuito de obter uma solução que respeite as necessidades do utilizador. A solução foi validada, do ponto de vista conceptual, através de um protótipo semi-funcional.
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The goal of the power monitoring in electrical power systems is to promote the reliablility as well as the quality of electrical power.Therefore, this dissertation proposes a new theory of power based on wavelet transform for real-time estimation of RMS voltages and currents, and some power amounts, such as active power, reactive power, apparent power, and power factor. The appropriate estimation the of RMS and power values is important for many applications, such as: design and analysis of power systems, compensation devices for improving power quality, and instruments for energy measuring. Simulation and experimental results obtained through the proposed MaximalOverlap Discrete Wavelet Transform-based method were compared with the IEEE Standard 1459-2010 and the commercial oscilloscope, respectively, presenting equivalent results. The proposed method presented good performance for compact mother wavelet, which is in accordance with real-time applications.
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In the oil prospection research seismic data are usually irregular and sparsely sampled along the spatial coordinates due to obstacles in placement of geophones. Fourier methods provide a way to make the regularization of seismic data which are efficient if the input data is sampled on a regular grid. However, when these methods are applied to a set of irregularly sampled data, the orthogonality among the Fourier components is broken and the energy of a Fourier component may "leak" to other components, a phenomenon called "spectral leakage". The objective of this research is to study the spectral representation of irregularly sampled data method. In particular, it will be presented the basic structure of representation of the NDFT (nonuniform discrete Fourier transform), study their properties and demonstrate its potential in the processing of the seismic signal. In this way we study the FFT (fast Fourier transform) and the NFFT (nonuniform fast Fourier transform) which rapidly calculate the DFT (discrete Fourier transform) and NDFT. We compare the recovery of the signal using the FFT, DFT and NFFT. We approach the interpolation of seismic trace using the ALFT (antileakage Fourier transform) to overcome the problem of spectral leakage caused by uneven sampling. Applications to synthetic and real data showed that ALFT method works well on complex geology seismic data and suffers little with irregular spatial sampling of the data and edge effects, in addition it is robust and stable with noisy data. However, it is not as efficient as the FFT and its reconstruction is not as good in the case of irregular filling with large holes in the acquisition.
Resumo:
In the oil prospection research seismic data are usually irregular and sparsely sampled along the spatial coordinates due to obstacles in placement of geophones. Fourier methods provide a way to make the regularization of seismic data which are efficient if the input data is sampled on a regular grid. However, when these methods are applied to a set of irregularly sampled data, the orthogonality among the Fourier components is broken and the energy of a Fourier component may "leak" to other components, a phenomenon called "spectral leakage". The objective of this research is to study the spectral representation of irregularly sampled data method. In particular, it will be presented the basic structure of representation of the NDFT (nonuniform discrete Fourier transform), study their properties and demonstrate its potential in the processing of the seismic signal. In this way we study the FFT (fast Fourier transform) and the NFFT (nonuniform fast Fourier transform) which rapidly calculate the DFT (discrete Fourier transform) and NDFT. We compare the recovery of the signal using the FFT, DFT and NFFT. We approach the interpolation of seismic trace using the ALFT (antileakage Fourier transform) to overcome the problem of spectral leakage caused by uneven sampling. Applications to synthetic and real data showed that ALFT method works well on complex geology seismic data and suffers little with irregular spatial sampling of the data and edge effects, in addition it is robust and stable with noisy data. However, it is not as efficient as the FFT and its reconstruction is not as good in the case of irregular filling with large holes in the acquisition.
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Trace gases are important to our environment even though their presence comes only by ‘traces’, but their concentrations must be monitored, so any necessary interventions can be done at the right time. There are some lower and upper boundaries which produce nice conditions for our lives and then monitoring trace gases comes as an essential task nowadays to be accomplished by many techniques. One of them is the differential optical absorption spectroscopy (DOAS), which consists mathematically on a regression - the classical method uses least-squares - to retrieve the trace gases concentrations. In order to achieve better results, many works have tried out different techniques instead of the classical approach. Some have tried to preprocess the signals to be analyzed by a denoising procedure - e.g. discrete wavelet transform (DWT). This work presents a semi-empirical study to find out the most suitable DWT family to be used in this denoising. The search seeks among many well-known families the one to better remove the noise, keeping the original signal’s main features, then by decreasing the noise, the residual left after the regression is done decreases too. The analysis take account the wavelet decomposition level, the threshold to be applied on the detail coefficients and how to apply them - hard or soft thresholding. The signals used come from an open and online data base which contains characteristic signals from some trace gases usually studied.
Resumo:
Trace gases are important to our environment even though their presence comes only by ‘traces’, but their concentrations must be monitored, so any necessary interventions can be done at the right time. There are some lower and upper boundaries which produce nice conditions for our lives and then monitoring trace gases comes as an essential task nowadays to be accomplished by many techniques. One of them is the differential optical absorption spectroscopy (DOAS), which consists mathematically on a regression - the classical method uses least-squares - to retrieve the trace gases concentrations. In order to achieve better results, many works have tried out different techniques instead of the classical approach. Some have tried to preprocess the signals to be analyzed by a denoising procedure - e.g. discrete wavelet transform (DWT). This work presents a semi-empirical study to find out the most suitable DWT family to be used in this denoising. The search seeks among many well-known families the one to better remove the noise, keeping the original signal’s main features, then by decreasing the noise, the residual left after the regression is done decreases too. The analysis take account the wavelet decomposition level, the threshold to be applied on the detail coefficients and how to apply them - hard or soft thresholding. The signals used come from an open and online data base which contains characteristic signals from some trace gases usually studied.
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Photodynamic therapy (PDT) consists of a non-toxic photosensitizing agent (FS) administration followed by a laser source resulting in a sequence of photochemical and photobiological processes that generate reactive oxygen species (ROS) that damaging cells. The present work evaluated the effects of PDT nanoemulsion-aluminum chloride phthalocyanine (AlClFc) mediated on malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD) and glutathione peroxidase (GPx) levels, which represent indicators involved in oxidative stress and antioxidant defenses. For this purpose, this study used 120 female rats of the Rattus norvegicus species, Wistar race, divided into 5 groups: Healthy (H), with periodontal disease (PD), with periodontal disease and treatment with FS (F), with periodontal disease and treatment with the laser (L); and periodontal disease and treatment with PDT (FL). An experimental model for represent periodontal disease (PD) was induced by ligature (split-mouth). Seven days later the induction of PD, the treatments were instituted according to the groups. In the group treated with PDT was applied 40μl FS (5μM) followed by laser irradiation diode InGaAlP (660nm, 100J / cm2). The rats were sacrificed on the 7th and 28th day after treatment and tissue specimens were removed and subjected to histological, immunohistochemical methods and enzymatic colorimetric measurements with detection by UV / VIS spectroscopy. Inflammatory changes, connective tissue disorganization and alveolar bone loss were displaying in groups with PD induced. The enzyme dosages showed that MDA levels were higher in PD induced groups, with no statistically significant differences (p> 0.05). High levels of GSH were found in groups L (p = 0.028) and FL (p = 0.028) compared with PD group, with statistically significant differences. Immunohistochemistry for SOD showed higher immunostaining in L and FL groups, compared to the PD group without statistically significant differences (p> 0.05). GPx showed lower immunoreactivity in the DP group when compared to the other groups and statistically significant differences were observed between the DPxL groups (p <0.05). TFD administered in this experiment did not induce elevation of MDA levels significantly increased the GSH levels and showed intense immunostaining pada SOD and GPx, showing that this therapy does not accentuated lipid peroxidation, however, it was able to induce effects on the antioxidant defenses processes. The LBI therapy appeared to show photomodulatory promoting effects reduction of the MDA levels, increasing GSH levels and with intense immunostaining for SOD and GPx, demonstrating that laser therapy induced antioxidant effects.
Resumo:
Esta pesquisa busca abordar e analisar os caminhos da mídia televisiva nas igrejas Assembleias de Deus no Brasil, aqui trabalhadas no plural devido às muitas ramificações da denominação, em suas construções das representações simbólicas, imaginárias, culturais e midiáticas. O objetivo é analisar a dimensão simbólica na proibição do uso da televisão na denominação religiosa em questão, e os argumentos para o veto entre os fiéis, a discreta aceitabilidade da TV diante das novas concepções teológicas das ADs ao longo dos anos, investimento em canal aberto (Rede Boas Novas de Televisão) e proposta de um programa televisivo como marca midiática da denominação (Programa Movimento Pentecostal). Para viabilidade desse trabalho, a metodologia adotada consiste em pesquisa bibliográfica histórica, com foco nos temas fundamentais para o desenvolvimento das pesquisas do imaginário, identidade, cultura, nação e televisão, aliada à pesquisa documental, que tem como meta os registros históricos, que melhor elucidarão os caminhos e a ligação da TV com as Assembleias de Deus.
Resumo:
Se presenta aquí la tesis doctoral titulada “Evolución histórica de las investigaciones sobre la morfología del cuerpo vítreo humano en la Edad Contemporánea”. Se trata de un estudio pionero —en la línea del tiempo— sobre los descubrimientos más importantes en la estructura del cuerpo vítreo humano, donde se lleva a cabo una innovadora periodización histórica orientada al desarrollo de las investigaciones. Debido a que el cuerpo vítreo es prácticamente transparente y está basado en una estructura fina y discreta, ha sido una parte del cuerpo humano difícil de estudiar y comprender. Además, al estar incluido dentro del ojo humano, ha habido grandes dificultades para su acceso in vivo. Sin embargo, con el avance en la microscopía y las técnicas histológicas, es a partir de mediados del siglo XIX cuando se comienza a estudiar con interés su morfología. Por otra parte, con la influencia de las primeras observaciones de la patología del vítreo y la retina utilizando el oftalmoscopio, y el desarrollo de la lámpara de hendidura, emergieron nuevas interpretaciones de la morfología in vivo desde el final de la Gran Guerra (1918). En particular, es a partir de 1945 cuando la investigación sobre esa estructura comenzó a ser numerosa, profunda y a dar sus frutos...
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Personality is one of the most controversial and intriguing theme in Psychology. In a general way, it could be understood as a set of rigid patters of feelings, thoughts, and behaviors from an individual. The aim of this investigation was describe how Brazilian researches in Psychology that use cognitive, behavioral, and cognitive-behavioral therapy referential have been approaching the subject Personality in their work. We also intended to determine the frequency of publications on Personality Disorders to compare this data with the bibliographical production on Anxiety and Mood Disorders. Moreover, we tried to describe how the Personality construct - and even Personality Disorders construct - has been addressed in the work on the Anxiety and Mood Disorders chosen for this review. The PePSIC Periódicos Eletrônicos em Psicologia - e SciELO.ORG - Scientific Electronic Library Online - databases were used for research. We investigated 53 journals, including two specific Cognitive Therapies and Behavioral-Cognitive Therapy (TCC) periodicals. Within each journal, we undertook a systematic survey on publications on the themes: Personality, Personality Disorder, Panic Disorder, Social Phobia, Obsessive-Compulsive Disorder (OCD), Generalized Anxiety Disorder, Major Depression, Dysthymia and Bipolar Disorder. A preliminary research has resulted in 218 articles. A second filter has obtained 81 articles in which we the focused on this review. There were found thirty-eight articles on Anxiety Disorders, twenty-five on Mood Disorders and eighteen on Personality Disorders. It was found that 90% of the papers on Anxiety Disorders make no reference to the term Personality or make it in a discrete way. This number rises to 96% to Personality Disorder group. Analyzing the specific journals on TCC we verified that 97% of the articles on Anxiety and Humor disorders do not cite the term Personality or cite but not explore it. This results point to the low rate of studies addressing the Personality and personality disturbs. Then, we can suggest that the difficulty on treating this Axis II disturbs has been worsened by lack of knowledge produced on the subject, either for lack of interest among researchers or because of the methodological obstacles found on this field.
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The aim of this paper is to deepen in the terminology of Records Management established by ISO standards, through a concrete example such as an interlinguistic comparison between UNE ISO 15489-1 and DIN ISO 15489-1, that is, between the Spanish and German versions of the ISO 15489-1. For that, the text is divided into two major and complementary parts, which are similar to both analytical perspectives adopted: the semantic one and the pragmatic one. The first one compares the words per se, taking into account the significant or word form as well as the significance or meaning. In the second part, examples of use from both languages are discussed, concerning the three terms considered essential in the text (Record, Records Management System and Records Management). The main conclusion lies in understanding how important the language is as a discrete tool of work for all information scientists, specially concerning to the standards, where the translators must show their best linguistic strategies to go unnoticed.
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This paper aims to investigate the use of collocations in DELE B1. We select the reading texts from DELE B1 (2010 to 2014) as research data. The investigation includes: First of all, we will study the theory of collocation and the classification as well as its application to the foreign language learning and teaching. Second, we will analyze the types of collocation annotated by Corpus Tool. Third, we tend to calculate the frequency use of each type of collocations written in Spanish reading texts. Next, we will discuss the interrelationship between collocations and text themes. Finally, we would like to compare the differences of results of collocation use between these two corpus tools: Corpus Tool and Corpus del Español in order to understand the native speakers’ preference of use collocations as well as to provide supplementay materials for teaching of Spanish reading. We hope that the expected results of our research will offer useful references for improving students' Spanish reading comprehension to pass DELE B1 examinations.
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Programa de doctorado: Economía: aplicaciones a las finanzas y seguros, a la economía sectorial, al medio ambiente y a las infraestructuras. La fecha de publicación es la fecha de lectura