Esta dissertação propõe o desenvolvimento de uma rede neural artificial (RNA) direcionada a ambientes foundation fieldbus para realização do cálculo de vazão em dutos fechados. Para tanto, a metodologia proposta utiliza-se de medidas de pressão, temperatura e pressão diferencial, as quais normalmente estão disponíveis em plantas industriais. A principal motivação do emprego das redes neurais reside no seu baixo custo e simplicidade de implementação, o que possibilita o emprego de apenas blocos fieldbus padrões tornando a metodologia independente do fabricante. Foi utilizada uma rede perceptron multicamadas com algoritmo de treinamento backpropagation de Levenberg-Marquardt. O treinamento foi realizado numa programação elaborada para o software Matlab TM. A arquitetura da rede neural foi determinada por métodos empíricos variando-se o número de neurônios e de camadas neurais até se atingir um erro aceitável na prática. Após esses treinamentos foi desenvolvida uma programação para realizar os cálculos de vazão em um ambiente foundation fieldbus utilizando-se para tanto o software DeltaV TM do fabricante Emerson Process Management. Foram obtidos resultados com erro relativo médio de valor de vazão em torno de 1.43% para um primeiro cenário utilizando uma placa de orifício e ar como fluido, e de 0,073% para um segundo cenário utilizando uma placa de orifício e gás natural como fluido, com relação aos valores obtidos através do instrumento multivariável 3095MV TM do fabricante Rosemount. Os valores de erro encontrados validam o método desenvolvido nessa dissertação. / This dissertation proposes the development of an artificial neural network (ANN) directed to foundation fieldbus environment for calculation of flow in closed ducts. The proposed methodology uses measurements of pressure, temperature and differential pressure, which are usually available in industrial plants. The main motivation of the use of neural networks lies in their low cost and simplicity of implementation, which allows the use of standard fieldbus blocks by just making the method independent of the manufacturer. It was used a multilayer perceptron network with backpropagation training and algorithm from Levenberg-Marquardt. The training was programmed in the software Matlab TM. The architecture of the ANN was determined by empirical methods by varying the number of neurons and neural layers until it reaches an acceptable error. After such trainings, it was developed a program to perform the flow calculations in an foundation fieldbus environment using Emerson Process Management\'s DeltaV TM software. The results were obtained with an average relative error of flow rate of 1.43% for the first scenario using an orifice plate and air as a process fluid, and 0.073% for a second scenario using an orifice plate and natural gas as the fluid related to the values obtained from Rosemount 3095MV TM multivariable instrument. The values of error found validate the method developed in this dissertation.

Esta dissertação apresenta um formalismo baseado no Método dos Elementos Finitos (MEF), adequado a análise de descontinuidades coaxiais com simetria axial, entre duas linhas coaxiais quaisquer, incluindo corrugações nos tubos internos e externos. Pelo método de Galerkin-Budnov deduz-se um operador integral bilinear, aplicado ao campo magnético, expandido em todo o domínio da estrutura, coaxial-descontinuidade-coaxial. As portas de entrada e saída da estrutura são posicionadas distantes da descontinuidade, de forma que nelas só haja o modo Transversal Eletromagnético (TEM). O campo magnético procurado e obtido pelo MEF. Os resultados encontrados; perdas de retorno, comportamento do campo magnético e as equi-fases nas portas de entrada e saída da estrutura, foram calculados e confrontados com as do Método de Casamento de Modos (MCM), com um alto grau de concordância. / This paper presents a formalism based on the Finite Element Method (FEM), suitable for analysis of discontinuities with axial symmetry, between any two coaxial lines, including corrugations. The method of Galerkin-Budnov follows a bi-linear integral operator, applied to the magnetic held, expanded in the whole area of the structure, coaxial-discontinuity-coaxial. The input and output ports of the structure are far from of the discontinuity, so that therein there is only the TEM mode. The magnetic held sought is obtained by MEF. The values for the return loss, and the magnetic helds at both ports were calculated and compared with those yielded by Modes Matching Technique, showing good agreement.

Esta dissertação apresenta um formalismo baseado no Método dos Elementos Finitos (MEF), adequado a análise de descontinuidades coaxiais com simetria axial, entre duas linhas coaxiais quaisquer, incluindo corrugações nos tubos internos e externos. Pelo método de Galerkin-Budnov deduz-se um operador integral bilinear, aplicado ao campo magnético, expandido em todo o domínio da estrutura, coaxial-descontinuidade-coaxial. As portas de entrada e saída da estrutura são posicionadas distantes da descontinuidade, de forma que nelas só haja o modo Transversal Eletromagnético (TEM). O campo magnético procurado e obtido pelo MEF. Os resultados encontrados; perdas de retorno, comportamento do campo magnético e as equi-fases nas portas de entrada e saída da estrutura, foram calculados e confrontados com as do Método de Casamento de Modos (MCM), com um alto grau de concordância. / This paper presents a formalism based on the Finite Element Method (FEM), suitable for analysis of discontinuities with axial symmetry, between any two coaxial lines, including corrugations. The method of Galerkin-Budnov follows a bi-linear integral operator, applied to the magnetic held, expanded in the whole area of the structure, coaxial-discontinuity-coaxial. The input and output ports of the structure are far from of the discontinuity, so that therein there is only the TEM mode. The magnetic held sought is obtained by MEF. The values for the return loss, and the magnetic helds at both ports were calculated and compared with those yielded by Modes Matching Technique, showing good agreement.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This work compares the urban growth, between the years of 1995 and 2006, with the population evolution of the demographic censuses, carried through between the years of 2000 and 2010. The delimitation and classification of the urban density, in categories, occurred from interpretation of the satellite images of the Landsat-5 sensor Thematic Mapper . Bands 3, 4 and 5 were used, in false composition color (R5G4B3). The classifications of urban density were defined as: high, average and low density. The demographic data concerning the censuses were extracted from the IBGE census sectors. Both the data from satellite images and census data were indexed in a georreferenced base. The grouping of census sectors leads to the use of samples pertinent to the complaints of taxpayers regarding the urban tax registration, registered and ceded by the Municipality of Cascavel/PR. It was also verified the expansion of urban density ratings in conjunction with population growth and percentage of urban area. It was found that, the greatest population evolution was observed in the class of low urban density. While the middle class urban density got minor population growth and urban expansion. It was also observed that the complaints were present in all urban density classes. Thus, we could relate the percentage of dissatisfactions contained in the classification of low urban density as areas of greater flexibility and expansion activities. This framework has made the data became more easily outdated. The changes in terms of constructions, land divisions, zoning and growth occur with intensity in the peripheries, just by the availability of spaces to be explored. The claims generated by users/contributors distributed by region and specialized in the urban area of Cascavel/PR point to the values attributed to the IPTU, taxes, as garbage collection and public lighting and, mainly, regarding the divergences in the measures of the properties (building, houses), that in some cases are with greater measure in the urban tax registration in relation to the constructed area and this affects the value to be collected for IPTU and taxes. / Este trabalho compara o crescimento urbano, entre os anos de 1995 e 2006, com a evolução populacional dos censos demográficos, realizados entre os anos de 2000 e 2010. A delimitação e classificação da densidade urbana, em categorias, ocorreram a partir de interpretação das imagens do satélite Landsat-5 sensor Thematic Mapper . Foram utilizadas as bandas 3, 4 e 5, em composição falsa-cor (R5G4B3). As classificações de densidade urbana foram assim definidas: alta, média e baixa densidade. Os dados demográficos referentes aos censos foram extraídos dos setores censitários do IBGE. Tanto os dados das imagens de satélite quanto os dados censitários foram indexados em base georreferenciada. O agrupamento dos setores censitários remete a utilização de amostras pertinente às reclamações dos contribuintes referente ao cadastro tributário urbano, registrado e cedido pela Prefeitura Municipal de Cascavel/PR. Foi, ainda, verificada a expansão das classificações de densidade urbana em conjunto com o crescimento populacional e percentual da área urbana. Constatou-se que, a maior evolução populacional foi observada na classe baixa densidade urbana. Enquanto a classe média densidade urbana obteve menor crescimento populacional e expansão urbana. Observou-se, ainda, que as reclamações estiveram presentes em todas as classes de densidade urbana. Dessa forma, pôde-se relacionar o percentual das insatisfações contidas na classificação de baixa densidade urbana como áreas de maior flexibilidade e ações de expansão. Este quadro fez com que os dados se tornassem mais facilmente desatualizados. As mudanças em termos de edificações, loteamentos, zoneamento e crescimento ocorrem com intensidade nas periferias, justamente pela disponibilidade de espaços a serem explorados. As reclamações geradas pelos usuários/contribuintes distribuídos por região e espacializada na área urbana de Cascavel/PR apontam para os valores atribuídos ao IPTU, taxas como coleta de lixo e iluminação pública e, principalmente, quanto às divergências nas medidas dos imóveis (prédios, casas), que em alguns casos se encontram com metragem maior no cadastro tributário urbano em relação ao construído e isto afeta o valor a ser recolhido de IPTU e taxas.

Des anomalies du traitement des informations sensorielles sont observées dans l'autisme, notamment, les signaux dynamiques semblent trop rapides et/ou complexes pour être convenablement traités par les personnes avec TSA. Aussi, ralentir ces signaux (Gepner, 2001, 2005) pourrait les aider à les percevoir et faciliterait leur compréhension aux interactions sociales. Nous avons proposé des enfants avec TSA, âgés de 3 à 8 ans, pendant un an des séances hebdomadaires d'orthophonie impliquant l'utilisation d'un logiciel ralentissant le son et les images des vidéos (Logiral(TM)). Un groupe contrôle d'enfants avec TSA, bénéficiant de séances d'orthophonie mais sans l'utilisation de Logiral(TM), a également été constitué. Nous avons comparé l'évolution des compétences socio-communicatives des deux groupes ainsi que les comportements d'exploration visuelle lors de la présentation du visage d'une narratrice racontant une histoire. Nos résultats montrent une amélioration significative de la capacité à imiter et diminution des comportements inadaptés uniquement pour les enfants du groupe expérimental. Après un an d'utilisation de Logiral(TM), ces enfants regardent davantage le visage et ses caractéristiques internes (yeux et bouche). / Sensory processing abnormalities are observed in autism, in particular dynamic signals involved in interactions seem too fast and/or too complex to be adequately treated by people with ASD. Also, slow down the speed of these signals (Gepner, 2001, 2005; Gepner et al, 2001, 2002, 2005) could help them to perceive informations and could facilitate their understanding in social interactions. We proposed to children with ASD, aged from 3 to 8 years, speech therapy weekly for a year with the use of a software (Logiral(TM)) to slow down sound and pictures. A control group of children with ASD, receiving speech therapy without the use of Logiral (TM) was also set up. We compared the evolution of the social communication skills of the two groups and their visual exploration behavior during the presentation of the face of a narrator telling a story. Our results show a significant improvement in the ability to imitate and a decrease in inappropriate behaviors, and this, only for the children in the experimental group. After a year of using Logiral(TM), these children watch more facial and internal features (eyes and mouth) which is no observed for children in the control group.

No description available.

ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California / The software decommutator was recently fielded at White Sands to address the requirements of a new missile test program. This software decommutator is rewritten as a simple C program Function or Class with a simple interface. The function and an Interface Control Definition (ICD) comprise the SoftDecom Engine (SDE). This paper addresses how an SDE can deliver Enterprise Wide Portability, not only that of the SDE, but more importantly a test program!s Verification & Validation (V&V). The crux of the portability issue is reduced to defining the interface of the SDE. In the simplest manifestation only two interfaces are needed and one is a given. The input structure is defined by the telemeter minor frame with time appended if desired. The output structure is no more than an array containing the parameters required. The ICD could be generalized into a standard for most applications, but that isn!t necessary, as the structures are simple, hence easy to adapt to anyway. This new paradigm!s importance will flourish on industries irreversible migration to faster and more complex telemeters. The paper reviews the relative ease that software exhibits when addressing very complex telemeters. With confidence it may be said “ if the telemeter format can be described in writing, it can be processed real time”. Also discussed are tasks that normally require specialized or customized and expensive equipment for example, merged streams, complex simulations and recording and reproducing PCM (sans recorder). Hopefully, your creativity will be engaged as ours has been.

Se recopiló una base de datos geográfica, con cartografía básica y temática, sobre la provincia de Napo (Ecuador), en la que se destacan los mapas de cobertura del suelo de los años 2002 y 2008. Como primer producto se elaboró un mapa de cobertura del suelo del año 1990 a partir de imágenes del sensor TM, (Landsat 4 y 5). Posteriormente se realizó un modelo de probabilidad de presencia de coberturas de tipo antrópico, usando la técnica de regresión logística multivariada; se evaluó el modelo con la curva ROC (Relative Operating Characteristic) y se determinó un alto poder de predicción en el modelo (AUC 0.89), distinguiendo además, que la distancia a centros poblados y a vías de comunicación son las variables más influyentes para la presencia de coberturas antrópicas. Se utilizó el mapa resultante del modelo de probabilidad como entrada en un modelo de transición de coberturas que combina Autómatas Celulares y Cadenas de Markov, entre otros aspectos, simulando un mapa de tipo de coberturas (natural o antrópico) para el año 2008. Se evaluó este mapa simulado, comparándolo con uno de referencia, a partir de índices kappa, y se obtuvo un porcentaje de concordancia general de 93%, lo cual es un buen indicador. Una vez que se ha contado con un modelo que permitía hacer simulaciones con el grado de confianza necesario, se realizaron simulaciones para los años 2015 y 2020. En estos escenarios de tipo de cobertura, se puede ver una clara presión hacia los bosques de la rivera del Rio Napo en un futuro, y también en aquellos cercanos a los principales centros poblados como Tena especialmente. Sin embargo, las áreas protegidas muestran un estado de conservación “natural” en las simulaciones, y esto se debe a sus condiciones de inaccesibilidad, en cuanto a falta de infraestructura vial, y a sus condiciones ambientales especiales. Por último, se verificó que la tasa de deforestación (cambio de natural hacia antrópico) en el período 1990-2008 fue de 4661 ha/año y en el período 2008-2020 sería de 3550 ha/año, indicando que la tendencia en el tiempo muestra en el mejor de los casos una disminución o por lo menos una estabilización de los procesos de deforestación.

International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / The Central Control Unit (CCU) for a decentralised on-board base-band telemetry system is designed for use in launch vehicle missions of the Indian Space Research Organisation (ISRO). This new design is a highly improved and miniaturised version of an earlier design. The major design highlights are as follows: usage of CMOS Field Programmable Gate Array (FPGA) devices in place of LS TTL devices, high level user programmability of TM format using EEPROMs, usage of high density memory for on-board data storage and delayed data transmission, HMC based pre-modulation filter and final output driver etc. The entire system is realised on a single 6 layer MLB and is packaged on a stackable modular frame. This design has resulted in a 1:4 reduction in weight, 1:4 reduction in volume, 1:5 reduction in power consumption and 1:3 reduction in height in addition to drastic reduction of part diversity and solder joints and thus greatly increased reliability. This paper discusses the design approach, implementation details, tools used, simulations carried out and the results of detailed qualification tests done on the realised qualification model.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.