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Coughlin, Michael J., and n/a. "Calibration of Two Dimensional Saccadic Electro-Oculograms Using Artificial Neural Networks." Griffith University. School of Applied Psychology, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030409.110949.
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The electro-oculogram (EOG) is the most widely used technique for recording eye movements in clinical settings. It is inexpensive, practical, and non-invasive. Use of EOG is usually restricted to horizontal recordings as vertical EOG contains eyelid artefact (Oster & Stern, 1980) and blinks. The ability to analyse two dimensional (2D) eye movements may provide additional diagnostic information on pathologies, and further insights into the nature of brain functioning. Simultaneous recording of both horizontal and vertical EOG also introduces other difficulties into calibration of the eye movements, such as different gains in the two signals, and misalignment of electrodes producing crosstalk. These transformations of the signals create problems in relating the two dimensional EOG to actual rotations of the eyes. The application of an artificial neural network (ANN) that could map 2D recordings into 2D eye positions would overcome this problem and improve the utility of EOG. To determine whether ANNs are capable of correctly calibrating the saccadic eye movement data from 2D EOG (i.e. performing the necessary inverse transformation), the ANNs were first tested on data generated from mathematical models of saccadic eye movements. Multi-layer perceptrons (MLPs) with non-linear activation functions and trained with back propagation proved to be capable of calibrating simulated EOG data to a mean accuracy of 0.33° of visual angle (SE = 0.01). Linear perceptrons (LPs) were only nearly half as accurate. For five subjects performing a saccadic eye movement task in the upper right quadrant of the visual field, the mean accuracy provided by the MLPs was 1.07° of visual angle (SE = 0.01) for EOG data, and 0.95° of visual angle (SE = 0.03) for infrared limbus reflection (IRIS®) data. MLPs enabled calibration of 2D saccadic EOG to an accuracy not significantly different to that obtained with the infrared limbus tracking data.
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Coughlin, Michael J. "Calibration of Two Dimensional Saccadic Electro-Oculograms Using Artificial Neural Networks." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/365854.
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The electro-oculogram (EOG) is the most widely used technique for recording eye movements in clinical settings. It is inexpensive, practical, and non-invasive. Use of EOG is usually restricted to horizontal recordings as vertical EOG contains eyelid artefact (Oster & Stern, 1980) and blinks. The ability to analyse two dimensional (2D) eye movements may provide additional diagnostic information on pathologies, and further insights into the nature of brain functioning. Simultaneous recording of both horizontal and vertical EOG also introduces other difficulties into calibration of the eye movements, such as different gains in the two signals, and misalignment of electrodes producing crosstalk. These transformations of the signals create problems in relating the two dimensional EOG to actual rotations of the eyes. The application of an artificial neural network (ANN) that could map 2D recordings into 2D eye positions would overcome this problem and improve the utility of EOG. To determine whether ANNs are capable of correctly calibrating the saccadic eye movement data from 2D EOG (i.e. performing the necessary inverse transformation), the ANNs were first tested on data generated from mathematical models of saccadic eye movements. Multi-layer perceptrons (MLPs) with non-linear activation functions and trained with back propagation proved to be capable of calibrating simulated EOG data to a mean accuracy of 0.33° of visual angle (SE = 0.01). Linear perceptrons (LPs) were only nearly half as accurate. For five subjects performing a saccadic eye movement task in the upper right quadrant of the visual field, the mean accuracy provided by the MLPs was 1.07° of visual angle (SE = 0.01) for EOG data, and 0.95° of visual angle (SE = 0.03) for infrared limbus reflection (IRIS®) data. MLPs enabled calibration of 2D saccadic EOG to an accuracy not significantly different to that obtained with the infrared limbus tracking data.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Applied Psychology
Griffith Health
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Vokůrka, Jan. "Ocenění podniku EOS KSI." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-75470.
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The main goal of my diploma thesis is business valuation of EOS KSI. Whole thesis is divided into four parts. Financial analysis, strategy analysis, analysis and forecast of value drivers and final valuation.
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Mitzenmacher, Diane. "A cross cultural survey of study habits and use of campus services by EOPS and non-EOPS community college students." CSUSB ScholarWorks, 1996. https://scholarworks.lib.csusb.edu/etd-project/1272.
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The following study surveyed 111 community college students to identify patterns in study habits and use of services to examine whether differences exist between ethnic backgrounds or grade point averages, in the utilization of skills or services.
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Yue, Chongshi. "EOG Signals in Drowsiness Research." Thesis, Linköpings universitet, Biomedicinsk instrumentteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-81761.
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Blink waveform in electrooculogram (EOG) data was used to develop and adjust the method of drowsiness detection in drivers. The origins of some other waveforms in EOG signal were not very clearly understood. The purpose of this thesis work is to study the EOG signal and give explanation of different kind of waveforms in EOG signal, and give suggestions to improve the blink detection algorithm. The road driving test video records and synchronized EOG signal were used to build an EOG library. By comparing the video record of the driver’s face and the EOG data, the origin of the unknown waveforms were discovered and related with the driver’s behavior. Literature descriptions were given to explain the EOG signal. The EOG library is the main result of this project. It organized by different types of EOG signal. Description and explanation were given for each type of waveform, as well as some examples. The knowledge gained from the previous research review and the EOG library gives some improvement suggestions for the blink detection algorithm. These suggestions still need to be verified in practical way.
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Bennett, Toby, Kirstin Looney, and Jim Chesney. "EOS High Rate Telemetry Processing Components." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/611854.
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International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe unprecedented volume of earth science data generated by NASA's Earth Observing System (EOS) will require significant advancements in the capability and scale of ground-based data acquisition and processing systems. In order to meet this challenge, NASA's Goddard Space Flight Center (GSFC) has initiated the development of key subsystem components for CCSDS front-end processing at 150 Mbps data rates. This effort is a continuation of the Functional Components Approach (1), an approach applied over the last eight years that uses modular, VMEbus subsystems based on Very Large Scale Integration (VLSI) technology to create pipelined, multi-processor telemetry data systems. The result of this development effort is the creation of four new functional component subsystems incorporating four new VLSI Application Specific Integrated Circuits (ASICs) and the augmentation of two existing subsystems to include elements for frame synchronization, Reed- Solomon error correction, CCSDS Service processing, and simulation at EOS data rates. This paper describes this development effort and provides initial functional and performance expectations.
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Langer, H. J., and M. Shellabear. "Recent e-Manufacturing solutions developed by EOS." Journal for New Generation Sciences, Vol 4, Issue 1: Central University of Technology, Free State, Bloemfontein, 2006. http://hdl.handle.net/11462/492.
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Published Articlee-Manufacturing means the fast, flexible and cost-effective production of parts directly from electronic data, which can include rapid prototyping, rapid tooling, (spare) parts on demand etc. Especially interesting is the direct manufacture of enduse parts. In this paper, recent case studies will be presented showing commercial e-Manufacturing projects including small production batches and mass customized series production from various industrial branches. The paper also discusses the relevance of several recent technological innovations in laser-sintering for e- Manufacturing, especially how increasing the productivity of machines and process chains has increased the range of applications which are cost-effective using lasersintering.
Case studies include:
- small series production (up to a few thousand p.a.) of products
- production of customized (one-off) products
- mass production of customer-specific (mass customized) products
- optimized tooling concepts for production of up to millions of products
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Bucharová, Ivana. "Ocenění podniku EOS KSI Česká republika, s.r.o." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-75082.
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The main goal of the thesis is to establish market value of the company EOS KSI Česká republika, s.r.o. to the date of 28.2.2009. This thesis is divided into 5 parts: strategic analysis, financial analysis, value creators, financial plan and overall evaluation of the company. As a main method is used DCF Entity and as an additional method the capitalised net revenue method. The value of the company is established as an interval range.
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Stephen, Adam Vercingetorix. "POD methods in baroclinic flows." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302401.
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Fogaça, David Augaitis. "Ondas na matéria nuclear." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-05102009-084141/.
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Assumindo que a matéria nuclear seja um fluido perfeito, estudamos a propagação de perturbações na densidade bariônica. A equação de estado é obtida através de um modelo relativístico em campo médio, o qual é uma variante do modelo não-linear de Walecka. A expansão das equações de Euler e da continuidade na hidrodinâmica relativística em torno das configurações de equilíbrio nos levam a equações diferenciais para a perturbação na densidade. Resolvemos tais equações numericamente para perturbações lineares e esféricas mediante pulsos iniciais. Para perturbações lineares econtramos soluções solitônicas de pulsos isolados e soluções com vários solitons seguidas de ``radiação\'\'. Dependendo da equação de estado um forte amortecimento pode ocorrer. Consideramos também a evolução de perturbações em um meio sem efeitos dissipativos. Nesse caso observamos a formação e quebra de ondas de choque. Depois estudamos todo o formalismo na matéria nuclear em temperatura finita. Nossos resultados podem ser relevantes para análise de dados do RHIC. Eles sugerem que ondas de choque formadas na fase de plasma de quarks e gluons podem sobreviver e se propagar na fase hadrônica. Também estudamos a equação de onda não-linear para perturbações na densidade bariônica e densidade de energia no plasma de quarks e gluons (QGP). Sob certas condições solitons podem existir no QGP. Finalmente discutimos métodos alternativos de soluções de equações di-ferenciais não-lineares.Assuming that nuclear matter can be treated as a perfect fluid, we study the propagation of perturbations in the baryon density. The equation of state is derived from a relativistic mean field model, which is a variant of the non-linear Walecka model. The expansion of the Euler and continuity equations of relativistic hydrodynamics around equilibrium configurations leads to differential equations for the density perturbation. We solve them numerically for linear and spherical perturbations and follow the propagation of the initial pulses. For linear perturbations we find single soliton solutions and solutions with one or more solitons followed by ``radiation\'\'. Depending on the equation of state a strong damping may occur. We consider also the evolution of perturbations in a medium without dispersive effects. In this case we observe the formation and breaking of shock waves. We study all these equations also for matter at finite temperature. Our results may be relevant for the analysis of RHIC data. They suggest that the shock waves formed in the quark gluon plasma phase may survive and propagate in the hadronic phase. We also study the non-linear wave equation for pertubations in baryon density and energy density in quark-gluon-plasma (QGP). Under certains conditions solitons may exist in QGP. Finally we discuss alternatives methods for solving non-linear differential equations.
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Ferreira, Ana Rute Marques. "Modelling the carbon dioxide solubility with CPA EOS." Master's thesis, Universidade de Aveiro, 2009. http://hdl.handle.net/10773/3116.
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Mestrado em Engenharia QuímicaAs emissões de dióxido de carbono têm hoje uma grande importância na indústria de engenharia química, pelo que a sua captura e armazenamento são uma importante área de investigação. Os líquidos iónicos têm sido estudados como solventes (“green solvents”) para a separação de gases e captura de dióxido de carbono. Os líquidos iónicos são uma nova classe de solventes orgânicos, que devido aos seus catiões orgânicos assimétricos e aos aniões inorgânicos, não podem constituir uma estrutura cristalina, permanecendo assim no estado líquido à temperatura ambiente ou temperaturas próximas desta. Estes compostos apresentam uma vasta gama de propriedades interessantes, tais como a alta estabilidade térmica; o estado líquido numa grande amplitude térmica; a boa solvatação, tanto para compostos polares como não polares; e uma das mais interessantes, colocando-os como uma alternativa viável para substituir os solventes orgânicos voláteis, a sua pressão de vapor desprezável. Outra grande vantagem destes solventes "neotéricos" é a possibilidade de modelar as suas propriedades, através da infinita combinação de catiões e aniões, permitindo desenhar os líquidos iónicos de acordo com os objectivos específicos de uma operação particular melhorando o seu desempenho. Já foram aplicadas várias equações de estado para descrever a solubilidade do dióxido de carbono nos líquidos iónicos (equilíbrio líquidovapor), tais como a PC-SAFT, soft-SAFT, Peng-Robinson, Krichevsky- Kasarnovsky, entre outras equações de estado. Neste trabalho, dados experimentais para o equilíbrio líquido-vapor do sistema de dióxido de carbono + 1-alquil-3-metilimidazólio bis(trifluorometilsulfonil)imida foram modelados pela primeira vez com a equação do estado Cubic Plus Association (CPA EoS), em que os parâmetros da equação são obtidos através do ajuste de dados experimentais de pressão de vapor e densidade. Com o objectivo de estudar a solubilidade do dióxido de carbono noutros compostos, foram também medidos os equilíbrios líquidovapor dos sistemas dióxido de carbono + dissulfureto de carbono e dióxido de carbono + tetraclorometano, numa célula de alta pressão, e os dados experimentais obtidos foram igualmente modelados com a CPA EoS. A equação de estado CPA já demonstrou ser uma ferramenta termodinamicamente flexível tendo descrito correctamente o equilíbrio líquidovapor de misturas contendo componentes associativos e não associativos distribuídos por diferentes fases fluidas. Mostra-se que este modelo permite uma boa descrição dos dados experimentais disponíveis. ABSTRACT: Carbon dioxide emissions have today a great importance in the chemical engineering industry, so its capture and storage are an important field of research. Ionic liquids have been studied as green solvents in gases separation and for carbon dioxide capture. Ionic liquids are a new class of organic solvents that due to their asymmetric organic cations and organic or inorganic anions cannot form an ordered crystal and therefore remain liquid at or near room temperature. These compounds present a wide range of interesting properties, such as high thermal stability, large liquid temperature range, good solvation both for polar and non polar compounds, and one of the most interesting, putting them as a viable and ambient friendly alternative to replace the volatile organic solvents, is their negligible vapor pressure. Other major advantage of these “neoteric” solvents is the possibility of fine tune their properties through the endless combination of cations and anions. This designer characteristic allows one to build task-specific ionic liquids that have an enhanced performance for specific operations. Several equations of state have been applied to describe the carbon dioxide solubility in ionic liquids (vapor-liquid equilibrium) such PC-SAFT, soft- SAFT, Peng-Robinson EoS, Krichevsky–Kasarnovsky EoS, among others. In this work, the experimental vapour-liquid equilibrium data of the systems carbon dioxide + 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ionic liquids were modelled for the first time with the Cubic plus Association Equation of State (CPA EoS) with the EOS parameters fitted to vapor pressure and densities of the ionic liquids. In addition, it was used a high pressure cell to measure the vapour-liquid equilibrium of the binary systems carbon dioxide + carbon disulphide and carbon dioxide + carbon tetrachloride and the experimental data obtained were also modelled with the CPA EoS. The CPA EoS had already demonstrated to be a flexible thermodynamic tool for correctly modelling the phase equilibrium of mixtures containing both associative and non-associative components distributed by different fluid phases. It is shown that this model allows for a very good description of the experimental data available.
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Dantas, Joana Sócrates. "Priority realloc : a threefold mechanism for route and resources allocation in EONs." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/318370.
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Backbone networks are responsible for long-haul data transport serving many clients with a large volume of data. Since long-haul data transport service must rely on a robust high capacity network the current technology broadly adopted by the industry is Wavelength Division Multiplexing (WDM). WDM networks enable one single fiber to operate with multiple high capacity channels, drastically increasing the fiber capacity. In WDM networks each channel is associated with an individual wavelength. Therefore a whole wavelength capacity is assigned to a connection, causing waste of bandwidth in case the connection bandwidth requirement is less than the channel total capacity.
In the last half decade, Elastic Optical Networks (EON) have been proposed and developed based on the flexible use of the optical spectrum known as the flexigrid. EONs are adaptable to clients requirements and may enhance optical networks performance. For these reasons, research community and data transport providers have been demonstrating increasingly high interest in EONs which are likely to replace WDM as the universally adopted technology in backbone networks in the near future.
EONs have two characteristics that may limit its efficient resources use. The spectrum fragmentation, inherent to the dynamic EON operation, decreases the network capacity to assign resources to connection requests increasing network blocking probability. The spectrum fragmentation also intensifies the denial of service to higher rate request inducing service unfairness.
Due to the fact EONs were just recently developed and proposed, the aforementioned issues were not yet extensively studied and solutions are still being proposed. Furthermore, EONs do not yet provide specific features as differentiated service mechanisms. Differentiated service strategies are important in backbone networks to guarantee client's diverse requirements in case of a network failure or the natural congestion and resources contention that may occur at some periods of time in a network.
Impelled by the foregoing facts, this thesis objective is three-fold. By means of developing and proposing a mechanism for routing and resources assignment in EONs, we intend to provide differentiated service while decreasing fragmentation level and increasing service fairness.
The mechanism proposed and explained in this thesis was tested in an EON simulation environment and performance results indicated that it promotes beneficial performance enhancements when compared to benchmark algorithms.Redes backbone sao responsáveis pelo transporte de dados à longa distância que atendem a uma grande quantidade de clientes com um grande volume de dados. Como redes backbone devem basear-se em uma rede robusta e de alta capacidade, a tecnologia atual amplamente adotada pela indústria é Wavelength Division Multiplexing (WDM). Redes WDM permitem que uma única fibra opere com múltiplos canais de alta largura de banda, aumentando drasticamente a capacidade da fibra. Em redes WDM cada canal está associado a um comprimento de onda particular. Por conseguinte, toda capacidade do comprimento de onda é atribuída a uma única conexão, fazendo com que parte da largura de banda seja desperdiçada no caso em que a requisição de largura de banda da conexão seja menor do que a capacidade total do canal. A partir da metade da última década, as Redes Ópticas Elásticas (Elastic Optical Networks - EON) têm sido propostas e desenvolvidas com base no uso flexível do espectro óptico conhecido como flexigrid. EONs são adaptáveis às requisiçes por banda dos clientes e podem, portanto, melhorar o desempenho das redes ópticas. Por estas razões, EONs têm recebido cada vez mais interesse dos meios de pesquisa e provedores de serviço e provavelmente substituirão WDM como a tecnologia universalmente adotada pela indústria em redes backbone. EONs têm duas características que podem limitar a utilização eficiente de recursos. A fragmentação do espectro, inerente à operação dinâmica das EONs, pode diminuir a capacidade da rede em distribuir recursos ao atender às solicitações por conexões aumentando a probabilidade de bloqueio na rede. A fragmentação do espectro também intensifica a negação de serviço às solicitações por taxa de transmissão mais elevada, gerando injustiça no serviço prestado. Como EONs foram desenvolvidas recentemente, respostas às questões acima mencionadas ainda estão sob estudo e soluções continuam sendo propostas na literatura. Além disso, EONs ainda não fornecem funções específicas como um mecanismo que proveja diferenciação de serviço. Estratégias de diferenciação de serviço são importantes em redes backbone para garantir os diversos requisitos dos clientes em caso de uma falha na rede ou do congestionamento e disputa por recursos que podem ocorrer em alguns períodos em uma rede. Impulsionada pelos fatos anteriormente mencionados, esta tese possui três objetivos. Através do desenvolvimento e proposta de um mecanismo de roteamento e atribuição de recursos para EONs, temos a intenção de disponibilizar diferenciação de serviço, diminuir o nível de fragmentação de espectro e aumentar a justiça na distribuição de serviços. O mecanismo proposto nesta tese foi testado em simulações de EONs. Resultados indicaram que o mecanismo proposto promove benefícios através do aprimoramento da performance de uma rede EON quando comparado com algoritmos de referência.
Les xarxes troncals son responsables per el transport de dades a llarga distància que serveixen a una gran quantitat de clients amb un gran volum de dades. Com les xarxes troncals han d'estar basades en una xarxa robusta i d'alta capacitat, la tecnologia actual àmpliament adoptada per la indústria és el Wavelength Division Multiplexing (WDM). Xarxes WDM permeten operar amb una sola fibra multicanal d'alt ample de banda, el que augmenta molt la capacitat de la fibra. A les xarxes WDM cada canal est a associat amb una longitud d'ona particular. En conseqüència, tota la capacitat del canal es assignada a una sola connexió, fent que part dels recurs siguin perduts en el cas en que l'ample de banda sol licitada sigui menys que la capacitat total del canal. A gairebé deu anys les xarxes òptiques elàstiques (Elastic Optical Networks -EON) son propostes i desenvolupades basades en el ús visible de l'espectre òptic conegut com Flexigrid. EONs són adaptables a les sol·licituds per ample de banda dels clients i per tant poden millorar el rendiment de les xarxes òptiques. Per aquestes raons, EONs han rebut cada vegada més interès en els mitjans d’investigació i de serveis i, probablement, han de reemplaçar el WDM com la tecnologia universalment adoptada en les xarxes troncals. EONs tenen dues característiques que poden limitar l'ús eficient dels recursos seus. La fragmentació de l'espectre inherent al funcionament dinàmic de les EONs, pot disminuir la capacitat de la xarxa en distribuir els recursos augmentant la probabilitat de bloqueig de connexions. La fragmentació de l'espectre també intensifica la denegació de les sol·licituds de servei per connexions amb una major ample de banda, el que genera injustícia en el servei ofert. Com les EONs s'han desenvolupat recentment, solucions als problemes anteriors encara estan en estudi i les solucions segueixen sent proposades en la literatura. D'altra banda, les EONs encara no proporcionen funcions especifiques com mecanisme de diferenciació de provisió de serveis. Estratègies de diferenciació de servei són importants en les xarxes troncals per garantir les diverses necessitats dels clients en cas d'una fallada de la xarxa o de la congestió i la competència pels recursos que es poden produir en alguns períodes. Impulsada pels fets abans esmentats, aquesta tesi te tres objectius. A través del desenvolupament i proposta d'un mecanisme d'enrutament i assignació de recursos per EONs, tenim la intenció d'oferir la diferenciació de serveis, disminuir el nivell de fragmentació de l'espectre i augmentar l'equitat en la distribució dels serveis. El mecanisme proposat en aquesta tesi ha estat provat en simulacions EONs. Els resultats van indicar que el mecanisme promou millores en el rendiment de la EON, en comparació amb els algoritmes de referència.
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Wohner, Wolfgang. "EOS an epistemological ontology-driven system for knowledge processing /." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=97127553X.
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Oliveira, Vera Lúcia Henriques de. "Modelling the aqueous solubility of PAHs with CPA EoS." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/3019.
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Mestrado em Engenharia QuímicaOs hidrocarbonetos aromáticos policíclicos (PAHs) constituem uma família de compostos caracterizada por possuírem dois ou mais anéis aromáticos condensados. São no geral referenciados de contaminantes ambientais porque estão associados à combustão incompleta de materiais orgânicos, como por exemplo, a queima de combustíveis fosseis, incineração de resíduos e derrames de petróleo. O estudo da solubilidade destes compostos em misturas aquosas é de grande importância, devido ao impacto que estes compostos têm na saúde pública e no meio ambiente, dado as suas propriedades cancerígenas. Neste trabalho, a capacidade da equação de estado CPA para modelar a solubilidade em meio aquoso de vários PAHs numa ampla gama de temperatura, foi avaliada. Esta equação de estado combina o termo Soave-Redlich-Kwong (SRK) para descrever as interações físicas com a contribuição de associação proposta por Wertheim, também usada em outras equações de estado, tais como as diferentes versões da SAFT. A CPA EoS já foi aplicada com sucesso a sistemas aquosos com alcanos, compostos aromáticos e álcoois. Os resultados obtidos são muito próximos dos valores encontrados na literatura, sugerindo que a CPA EoS é um modelo adequado para correlacionar soluções aquosas de moléculas complexas de poluentes orgânicos. ABSTRACT: The polycyclic aromatic hydrocarbons (PAHs) are a family of compounds characterized by having two or more aromatic rings condensed. They are referenced in general because they are environmental contaminants associated with the incomplete combustion of organic materials, such as the burning of fossil fuels and incineration of waste, and oil spills. The solubility of these xenobiotics in aqueous mixtures must be monitored due to their impact on public health and the environment, because of their carcinogenic properties and their ubiquity in the environment. In this work, the ability of the Cubic-plus-Association equation of state (CPA EoS) for modelling the aqueous solubility of several PAHs in a wide temperature range was evaluated. This equation of state combines the Soave-Redlich-Kwong (SRK) EoS for describing the physical interactions with the association contribution proposed by Wertheim, also used in other associating equations of state, such as the different versions of SAFT. The CPA EoS had already been successfully applied to aqueous systems with alkanes, aromatics and alcohols. The results obtained are in very close agreement with the literature data, suggesting that the CPA EoS is an adequate model for correlating aqueous solutions of complex molecules of organic pollutants.
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Barringer, Bruce O. "DISCRETE EVENT SIMULATION OF THE EOS-AM1 SCIENCE FORMATTING EQUIPMENT." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/608559.
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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaFairchild is presently developing a high-rate telemetry collection and formatting component for one of NASA’s Mission to Planet Earth’s key missions. Because of the complexity and new technology involved, discrete event simulation tools have played a key role in the development process. This paper serves as a brief introduction to this component and to the model developed with the simulation tools.
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Sizemore, Tom. "Design of a battery charger for the NASA EOS space platform." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10242009-020221/.
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Martin, Petitfrere. "EOS based simulations of thermal and compositional flows in porous media." Thesis, Pau, 2014. http://www.theses.fr/2014PAUU3036/document.
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Les calculs d'équilibres à triphasiques et quadriphasiques sont au cœur des simulations de réservoirs impliquant des processus de récupérations tertiaires. Dans les procédés d'injection de gaz ou de vapeur, le système huile-gaz est enrichi d'une nouvelle phase qui joue un rôle important dans la récupération de l'huile en place. Les calculs d'équilibres représentent la majeure partie des temps de calculs dans les simulations de réservoir compositionnelles où les routines thermodynamiques sont appelées un nombre conséquent de fois. Il est donc important de concevoir des algorithmes qui soient fiables, robustes et rapides. Dans la littérature peu de simulateurs basés sur des équations d'état sont applicables aux procédés de récupération thermique. A notre connaissance, il n'existe pas de simulation thermique complètement compositionnelle de ces procédés pour des cas d'applications aux huiles lourdes. Ces simulations apparaissent essentielles et pourraient offrir des outils améliorés pour l’étude prédictive de certains champs. Dans cette thèse, des algorithmes robustes et efficaces de calculs d’équilibre multiphasiques sont proposés permettant de surmonter les difficultés rencontrés durant les simulations d'injection de vapeur pour des huiles lourdes. La plupart des algorithmes d'équilibre de phases sont basés sur la méthode de Newton et utilisent les variables conventionnelles comme variables indépendantes. Dans un premier temps, des améliorations de ces algorithmes sont proposées. Les variables réduites permettent de réduire la dimensionnalité du système de nc (nombre de composants) dans le cas des variables conventionnelles, à M (M<Three to four phase equilibrium calculations are in the heart of tertiary recovery simulations. In gas/steam injection processes, additional phases emerging from the oil-gas system are added to the set and have a significant impact on the oil recovery. The most important computational effort in many chemical process simulators and in petroleum compositional reservoir simulations is required by phase equilibrium and thermodynamic property calculations. In field scale reservoir simulations, a huge number of phase equilibrium calculations is required. For all these reasons, the algorithms must be robust and time-saving. In the literature, few simulators based on equations of state (EoS) are applicable to thermal recovery processes such as steam injection. To the best of our knowledge, no fully compositional thermal simulation of the steam injection process has been proposed with extra-heavy oils; these simulations are essential and will offer improved tools for predictive studies of the heavy oil fields. Thus, in this thesis different algorithms of improved efficiency and robustness for multiphase equilibrium calculations are proposed, able to handle conditions encountered during the simulation of steam injection for heavy oil mixtures. Most of the phase equilibrium calculations are based on the Newton method and use conventional independent variables. These algorithms are first investigated and different improvements are proposed. Michelsen’s (Fluid Phase Equil. 9 (1982) 21-40) method for multiphase-split problems is modified to take full advantage of symmetry (in the construction of the Jacobian matrix and the resolution of the linear system). The reduction methods enable to reduce the space of study from nc (number of components) for conventional variables to M (M<
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Noone, Estelle S., Kevin Parker, and Janice Swope. "DEVELOPMENT OF PC-BASED SPACECRAFT SIMULATOR FOR EOS GROUND SYSTEM TESTING." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/606810.
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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, NevadaSpacecraft communication simulators are extremely useful for integration and testing of spacecraft control centers and supporting ground systems. To reduce development costs, a Windows NT PC-based simulation system is being developed to support testing for upcoming NASA missions. The spacecraft simulation suite of tools integrates modules within a core infrastructure and is customized to meet mission unique specifications not met by the baseline system.
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Fernandes, Kelly Bomfim da Silva. "Dança no espaço escolar: abordagem a partir da LDB EOS PCN’S." Escola de Dança, 2010. http://repositorio.ufba.br/ri/handle/ri/15824.
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A autora trata da frágil implementação do ensino da Arte/Dança em estabelecimentos de ensino formal da rede estadual de educação, da cidade de Montes Claros /MG em acordo com a Lei de Diretrizes e Bases da Educação, em consonância com os Parâmetros Curriculares Nacionais e na observação dos paradigmas utilizados na discussão da teoria e prática de ensino de dança nessas escolas. Buscou verificar se a Dança tem sido contemplada como uma linguagem da Arte preconizada pela Lei de Diretrizes e Bases da Educação Nacional – LDB nº. 9.394/96 e pelos Parâmetros Curriculares Nacionais/1998, além de demonstrar a importância da instituição formal de ensino, seja ela pública ou privada, seguir esta lei específica, que diz considerar a Arte como área de conhecimento obrigatória no sistema educacional. Torna-se importante também que, seguindo a lei, o conhecimento em Artes proporcione à instituição (diretores, supervisores, professores, alunos e pais) o acesso ao conhecimento da Dança, não sob um entendimento qualquer, mas mediante aquele proposto pelos PCN’s – Arte/Dança que visam a formação do aluno neste universo de conhecimento. Realizou-se um estudo de caráter qualitativo, exploratório e documental a partir do levantamento quantitativo buscando identificar o número existente de escolas públicas estaduais que contemplam a dança nas aulas de Arte, além da visitação e entrevistas semi-estruturadas a essas escolas selecionadas a partir de dados fornecidos pela Secretaria Municipal de Educação da cidade de Montes Claros/MG. Traz um estudo de dança a partir das legislações educacionais, além do entendimento da dança como linguagem artística que constrói conhecimento. Os resultados indicam fatores que prejudicam a presença do ensino da Dança na disciplina Arte em escolas públicas estaduais da cidade de Montes Claros/MG demonstrando que, a falta de profissionais formados em dança na região decorrente a ausência de um curso superior na área presente na universidade que abrange todo o município; a infraestrutura precária das escolas não proporcionando condições necessárias para o ensino da Arte, além da predominância de profissionais da área de Artes Visuais em atuação causam a frágil implementação e inclusão do ensino de Dança proposto pelos Parâmetros Curriculares Nacionais/1998. A partir destes dados, percebe-se que a dança não é valorizada como uma linguagem da Arte e depreendemos que a lei parece não garantir a ação efetiva do ensino da Arte nas escolas, além de tornar confuso o entendimento de qual linguagem específica a ser ensinado nas aulas de Artes.
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Hsu, Shou-Chang. "Adoption of the internet-based Electronic Ordering Systems (EOS)-users' factor analysis." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA387396.
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Thesis (M.S. in Management) Naval Postgraduate School, December 2000."December 2000." Thesis advisor(s): William J. Haga, Kevin R. Gue. Includes bibliographical references (p. 55-57). Also available online.
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Lagacé, Pierre-yves. "Développement et validation d’une méthode d’évaluation destranslations glénohumérales 3d sous EOS(mc)." Thesis, Paris, ENSAM, 2012. http://www.theses.fr/2012ENAM0059/document.
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L'analyse morpho-fonctionnelle précise de l'épaule, notamment au niveau de l'articulation glénohumérale (GH), permettrait d'améliorer notre compréhension des dysfonctions de l'épaule associées aux ruptures de la coiffe des rotateurs. Cependant, des difficultés techniques compliquent l'analyse de la morphologie et du mouvement de l'épaule dans un contexte clinique. Dans le cadre de la présente thèse, une méthode d'analyse 3D des translations GH basée sur l'acquisition de séquences de radiographies biplanes sous EOS™ a été développée. Une étude pilote sur 10 sujets sains a d'abord permis de vérifier la facilité d'application d'un protocole d'acquisition des images et d'évaluer la répétabilité de l'identification des repères anatomiques de l'épaule sur les radiographies. La méthode proposée en dernier lieu permet, suite à l'acquisition de radiographies, de reconstruire un modèle personnalisé morpho-réaliste de la scapula et un modèle simplifié de l'humérus. Ces modèles sont ensuite recalés interactivement sur les images acquises à différentes positions du bras et utilisés pour décrire les translations GH à ces positions. La méthode a été validée en termes de précision et de répétabilité sur des images acquises d'épaules cadavériques et de patients ayant des ruptures de la coiffe des rotateurs. La dernière partie du travail présenté ici consiste à appliquer la méthode développée à 30 sujets (25 patients et 5 sujets sains) pour lesquels l'état de la coiffe des rotateurs et la fonction de l'épaule ont été évalués, puis à étudier les corrélations entre les translations GH et la fonction de l'épaulePrecise morpho-functional analysis of the shoulder, including of the glenohumeral (GH) joint, would allow improving our understanding of shoulder dysfunction associated to rotator cuff tears. However, technical difficulties make analysis of shoulder morphology and motion difficult in a clinical setting. The work carried out during this thesis allowed developing a method for 3D analysis of GH translations relying on the acquisition of sequences of biplanar radiographs with the EOS™ system. A pilot study carried out on 10 healthy subjects allowed verifying the ease of application of an image acquisition protocol and evaluating the repeatability of shoulder landmark identification on the radiographs. The final proposed method allows, following the acquisition of radiographs, obtaining a personalized morphologically realistic reconstruction of the scapula and a simplified model of the humerus. These models are then interactively registered to the images acquired at different arm positions and used to describe GH translations for these positions. The proposed method was validated in terms of precision and repeatability on images acquired of cadaveric shoulders and of patients with rotator cuff tears. The last part of the work presented here consists in applying the developed method to 30 subjects (25 patients and 5 asymptomatic subjects) for whom rotator cuff condition and shoulder function were assessed, and to study correlations between GH translations and shoulder function
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Hu, Rong. "Regulation of osteoclast differentiation by transcription factors MITF, PU.1 and EOS." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1166644761.
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Lagacé, Pierre-Yves. "Développement et validation d’une méthode d’évaluation des translations glénohumérales 3D sous EOS." Mémoire, École de technologie supérieure, 2013. http://espace.etsmtl.ca/1142/1/LAGAC%C3%89_Pierre%2DYves.pdf.
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Les pertes de fonction de l’épaule associées à des pathologies de la coiffe des rotateurs sont très fréquentes et peuvent être très handicapantes pour les gens affectés. Par exemple, des actions de la vie quotidienne aussi simples que se laver les cheveux ou prendre un verre dans une armoire peuvent devenir extrêmement douloureuses ou être même impossibles à réaliser. Bien qu’il existe des outils fiables pour le diagnostic des pathologies aux tissus mous de l’épaule, ceux-ci ne permettent pas d’expliquer adéquatement la gravité des symptômes leur étant associés. En effet, on constate que certains patients présentant des ruptures massives de la coiffe des rotateurs maintiennent une bonne fonction dans la vie de tous les jours, alors que d’autres présentant des blessures mineures, souffrent d’importantes pertes de fonction. Une meilleure compréhension des mécanismes impliqués dans les pertes de fonction de l’épaule permettraient d’améliorer le diagnostic et la prise en charge des patients.
Certaines études suggèrent que le déplacement du centre de la tête humérale par rapport à la glène (les translations gléno-humérales, GH) pourrait être corrélé aux pertes de fonction de l’épaule en présence de ruptures de la coiffe des rotateurs. Cependant, à cause des limitations techniques au niveau des méthodes d’analyse des translations GH, peu d’études se sont penchées sur la question en détail. C’est dans ce contexte que s’inscrit cette thèse : les objectifs principaux sont de développer et de valider une méthode d’analyse des translations GH et de vérifier l’existence d’une corrélation entre les translations GH et la fonction de l’épaule chez un groupe de patients avec rupture de la coiffe des rotateurs.
À cette fin, nous avons développé une méthode d’analyse des translations GH reposant sur l’acquisition de séquences de radiographies biplanes à l’aide du système EOS™. La première partie du travail présentée ici consiste à développer un protocole d’acquisition des radiographies en pseudo-cinématique et à évaluer la répétabilité de l’identification de repères anatomiques de l’épaule sur les radiographies. La méthode d’évaluation des translations GH développée en dernier lieu permet, suite à l’acquisition des radiographies et à la numérisation de repères anatomiques répétables, de reconstruire un modèle personnalisé morpho-réaliste de la scapula du sujet et un modèle simplifié de l’humérus. Ces modèles sont ensuite recalés interactivement à l’ensemble des positions imagées et utilisés pour décrire les translations GH entre ces positions. La validation de la méthode sur 10 scapulas sèches, 5 épaules cadavériques et 5 patients a démontré que les translations GH pouvaient être évaluées avec une précision de l’ordre de 2 mm. L’application de la méthode à 25 patients ayant des ruptures de la coiffe des rotateurs et 5 sujets sains n’a pas permis d’établir de lien clair entre les translations GH et la fonction de l’épaule, mais a tout de même permis d’identifier certaines corrélations entre l’amplitude des translations GH et différents aspects de la fonction de l’épaule, principalement chez les femmes.
Cette thèse aura donc permis de réaliser des avancements majeurs tant d’un point de vue technique que scientifique. Tout d’abord, le travail réalisé a permis de développer une méthode d’analyse morpho-fonctionnelle de l’épaule en 3D, précise, et peu invasive. Celle-ci pourra être exploitée en clinique ou dans le cadre d’études morphologiques de l’épaule ou de la pseudo-cinématique de la scapula. Ensuite, cette thèse propose également un marqueur radiologique de la fonction de l’épaule, les translations GH. Ainsi, le travail réalisé représente un pas de plus dans l’étude morpho-fonctionnelle de l’épaule, qui permettra sans aucun doute d’améliorer notre compréhension de l’épaule pathologique, et à terme, l’amélioration du diagnostic et de la prise en charge des patients souffrant de douleurs à l’épaule, et ainsi à l’amélioration de leur qualité de vie.
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Brown, Barbara, Toby Bennett, and Jose Betancourt. "High Performance CCSDS Processing Systems for EOS-AM Spacecraft Integration and Test." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/611597.
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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaThe Earth Observing System-AM (EOS-AM) spacecraft, the first in a series of spacecraft for the EOS, is scheduled for launch in June of 1998. This spacecraft will carry high resolution instruments capable of generating large volumes of earth science data at rates up to 150 Mbps. Data will be transmitted in a packet format based upon the Consultative Committee for Space Data Systems (CCSDS) Advanced Orbiting Systems (AOS) recommendations. The Data Systems Technology Division (DSTD) at NASA's Goddard Space Flight Center (GSFC) has developed a set of high performance CCSDS return-link processing systems to support testing and verification of the EOS-AM spacecraft. These CCSDS processing systems use Versa Module Eurocard bus (VMEBus) Very Large Scale Integration (VLSI)-based processing modules developed for the EOS ground segment to acquire and handle the high rate EOS data. Functions performed by these systems include frame synchronization, Reed-Solomon error correction, fill frame removal, virtual channel sorting, packet service processing, and data quality accounting. The first of the systems was delivered in October 1994 to support testing of the onboard formatting equipment. The second and third systems, delivered in April 1995, support spacecraft checkout and verification. This paper will describe the function and implementation of these systems.
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GRUBER, OLIVIER. "Eos, un environnement pour applications persistentes et distribuees partageant un espace d'objets." Paris 6, 1992. http://www.theses.fr/1992PA066686.
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Cette dissertation se compose de deux parties. La premiere propose une vue nouvelle des environnements pour les architectures distribuees ayant comme but la transparence a la gestion physique d'objets. Cette gestion inclue les aspects de persistence, distribution, et protection. L'environnement est totalement oriente-objet. Les objets sont definis dans un unique schema et peuplent un unique espace partage par l'ensemble des utilisateurs. La seconde partie presente la conception de l'environnement eos, qui est conforme a notre vue. Nous nous concentrons sur son gestionnaire d'objets persistent et distribue dont la conception repose sur une hypothese de disponibilite a la fois des machines 64 bits et des micronoyaux, et se fonde sur trois techniques fondamentales, a savoir la gestion uniforme d'objets, l'envoi de fonctions et le ramassage de miettes fonde sur le tracage. Meme si notre conception est aggressive et originale, nos contributions majeures sont autres. La premiere est une nouvelle mise en uvre des actions emboitees dans le contexte particulier d'une gestion uniforme d'objets. Ses performances sont meilleures que celles des autres mises en uvre bien que notre support soit plus complet puisqu'il integre l'heritage de verrous tant vers le haut que vers le bas. La seconde est notre modele de placement d'objets qui regroupe a la fois le groupement d'objets sur disques et le groupement d'objets sur nuds. Tout particulierement, ce modele permet aux utilisateurs un controle sur le placement des objets partages, sans pour autant sacrifier la transparence. La derniere de nos contributions est la dynamicite du placement d'objets, c'est-a-dire que celui-ci est periodiquement reevalue et corrige
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Mang, Xuesi. "Hardware and software control for the NASA EOS satellite power system testbed." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-05092009-040507/.
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Saad, Pedro Fernandes. "Empresas eODS: priorizando as ações sustentáveis de maior retorno econômico, social e ambiental para a humanidade." Pontifícia Universidade Católica de São Paulo, 2018. https://tede2.pucsp.br/handle/handle/21547.
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Comprising 8 goals and 21 associated targets, the United Nations Millennium Development Goals (MDGs), which were in forcesincethe beginning of the millennium until2015, have produced good results. Although this success was not entirely due to the MDGs,but also to a number of other global favorable circumstances, such as China's accelerated growth in the period, significant reductions were observed in global indices such as extreme poverty, hunger, out-of-school children and child mortality. The 2030 Agenda, which has succeeded the MDGs since 2016, is composed of 17 Sustainable Development Goals(SDGs) and 169 associated targets, representing a much greater ambition to be achieved in an equalperiod of 15 years. According to the United Nations DevelopmentProgram (UNDP), it is estimated that US$ 5-7 trillion will be needed to meet the SDGs, with a deficit of US$ 2.5 trillion in developing countries, an order of greatness above the assistance they receive from developed countries, in the order of billions. It is a consensus that this difference can only be covered through partnerships involving the UN, governments, Non-Governmental Organizations (NGOs) and the private sector (companies and investors). This idea is advocatedby both market experts and the UN itself. Since the creation of the United Nations Global Compact in 2000, UNhas discussed partnerships every two years in the General Assemblies and has dedicated SDG17 to specifically deal with the partnerships to achieve the other SDGs. In order to stimulate the active participation of companies in SDGs, incorporating sustainability into their value chains, the Global Compact has been active on several fronts, including the provision of Blueprint for Business Leadership in the SDGs (BBL), a guide that presents suggestions for possible actions and guidelines on how to implement them. However, these actions are presented qualitatively, without any kind of expected cost/benefit parameter that can help companies and investors in decision making. This is a matterthat the Copenhagen Consensus Center (CCC) addresses in the Post-2015 Consensus, suggesting the prioritization of SDGtargets based on a return perdollar invested ratio, although the return,in this case,is the benefit to people, the planetand prosperity. The objective of this work is to propose a method to assist companies in decision making regarding thechoice of sustainable actions to be carried out in partnership with governments, NGOs and the UN itself, as recommended by SDG17, taking into account the cost/benefit ratio in terms of return (for mankind) per dollar invested. For this, the actions listed by the CCC in the Post-2015 Consensusare taken as basis and, for those that can be executed by companies, the model proposed in the BBL by the Global Compact is applied. The aim is to enhance the impact of sustainable actions carried out by companies and to help the UN and its specialized agencies, programs and funds to select and prioritize the most impactful partnerships, thereby contributing to achieving the intended targets by 2030
Compostos por oito objetivos e 21 metas associadas, os Objetivos de Desenvolvimento do Milênio (ODM) da Organização das Nações Unidas (ONU), que vigoraram do início do milênio até 2015, produziram bons resultados. Ainda que este sucesso não tenha sido integralmente devido aos ODM, mas também a uma série de outras conjunturas globais favoráveis, como o crescimento acelerado da China no período, foram observadas significativas reduções em índices globais como extrema pobreza, fome, crianças fora da escola e mortalidade infantil. A Agenda 2030, que sucedeu os ODM a partir de 2016, é composta por 17 Objetivos de Desenvolvimento Sustentável (ODS) e 169 metas associadas, representando uma ambição muito maior para ser atingida em igual prazo de 15 anos. De acordo com o Programa das Nações Unidas para o Desenvolvimento (PNUD), estima-se que serão necessários de US$ 5 a 7 trilhões para atingir os ODS, sendo que nos países em desenvolvimento há um déficit de US$ 2.5 trilhões. Trata-se deuma ordem de grandeza acima da assistência que eles recebem dos países desenvolvidos, na casa de bilhões. É consenso que esta diferença só pode ser coberta por meio de parcerias que envolvam a ONU, governos, Organizações Não-Governamentais (ONGs) e o setor privado (empresas e investidores). Esta ideia é defendida tanto por especialistas do mercado, como pela própria ONU, que desde a criação do Pacto Global das Nações Unidas, em 2000, discute o tema das parcerias a cada dois anos nas Assembleias Gerais, além de ter dedicado o ODS 17 para tratar especificamente das parcerias para o atingimento dos demais Objetivos. Para estimular a participação ativa das empresas nos ODS, incorporando a sustentabilidade em suas cadeias de valor, oPacto Global tem atuado em diversas frentes, dentre elas a disponibilização do Blueprint for Business Leadership on the SDGs(BBL), um guia que apresenta sugestões de possíveis ações e orientações de como implementá-las. Entretanto, essas ações são apresentadas qualitativamente, sem nenhum tipo de parâmetro de relação custo/benefícioesperada que possa auxiliar as empresas e investidores na tomada de decisão. Esta é uma questão que o Copenhagen Consensus Center (CCC) endereça no Post-2015 Consensus, sugerindo a priorização das metas dos ODS com base em umarelação de retorno por dólarinvestido, embora o retorno, neste caso, seja o benefício para as pessoas, o planeta e a prosperidade. O trabalho tem por objetivo propor um método para auxiliar as empresas na tomada de decisão em relação à escolha de ações sustentáveis a serem realizadas em parceria com governos, ONGs e a própria ONU, conforme preconiza o ODS 17, levando em consideração o fator custo/benefício em termos de retorno (para a humanidade) por dólar investido. Para isto, tomam-se por base as ações listadas pelo CCC no Post-2015 Consensuse, para aquelas que podem ser executadas por empresas, aplica-se o modelo proposto no BBL pelo Pacto Global. Pretende-se, desta forma, potencializar o impacto das ações sustentáveis executadas pelas empresas e ajudar a ONU e suas agênciasespecializadas,programas e fundos a selecionareme priorizaremas parcerias de maior impacto, contribuindo, desta forma, para o atingimento das metas pretendidas até 2030
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Suh, Jee Kyung. "Examining teacher epistemic orientations toward teaching science (EOTS) and its relationship to instructional practices in science." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/3198.
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The purpose of this study was to identify essential features of Epistemic Orientation toward Teaching Science (EOTS) and to explore the relationships between EOTS and instructional practices. This study proposes a new concept, EOTS: defined as a teacher's set of interrelated beliefs that are developed and used when teaching science, and are shaped by the Nature of Knowing in General, the Nature of Knowing in Science, the Nature of Learning, and the Nature of Teaching. The essential elements of EOTS were identified through a comprehensive literature review and refined through a multiple-case study.
The participants of the study were three exemplary fifth grade teachers who had been implementing an Argument-based Inquiry (ABI) approach, called Science Writing Heuristic (SWH), for more than three years and were highly devoted to encouraging their students to engage in science practices addressed in Next Generation Science Standard. Data were collected from multiple sources including semi-structured interviews, Video-Stimulated Recall interviews, classroom observations, researchers' field notes, and classroom artifacts. Data was systematically coded, and each belief and practice analyzed in-depth.
The results identified eleven interconnected beliefs held in common by all three teachers. Among the eleven elements, How to Learn was the core belief that was most connected to the others and also aligned well with the Source of Knowing, How to Learn, Evidence-based Argument, and How to Teach; this idea established a strong structural foundation for the EOTS. In addition, some elements were explicitly presented when the teachers made instructional decisions, while others were only presented implicitly.
In addition, prominent patterns of instructional practice were evident across the three cases. The teachers did not plan how to teach in advance, rather they made instructional decisions based on their epistemic orientations. In particular, they emphasized a conceptual understanding of the big ideas in science by making connections between students' ideas and the big ideas in science. Constant negotiation (construction and critique) was another pattern observed throughout the lessons. In creating effective learning conditions for conceptual understanding and constant negotiation, teachers used language practices and social, group-work as epistemic tools to help students construct and critique knowledge. Moreover, physical resources, such as physical materials and time, were used in a way that encouraged students to engage in science practice. More importantly, the way in which classroom practices and dialogue were managed relied heavily on the essential elements of ETOS. Specifically, How to Learn and Control of Learning influenced the student-centeredness of their instructional practices.
This study provides several implications for teacher education and research. Teacher-education programs should focus energy on shaping teacher ideas about learning, and address the epistemic foundations of science practices. Further investigation into the essential elements of EOTS, and the relationship between these elements and instructional practices must be pursued with diverse subjects, contexts, and methodologies, to develop a fuller understanding of how these elements work as a whole.
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Piqueras, Pardellans Joaquim. "Assessment of a micro-grid Ionization-chamber (EOS) for low-dose chest radiography." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/378369.
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EOS és una nova tecnologia d'imatge que fa servir un detector de radiació gasós, una cambra d'ionització de micro-reixeta, derivada del Micromegas desenvolupat per Georges Charpak (Premi Nobel 1992) per recerca en física d'altes energies al CERN (Ginebra, CH). Aquests detectors poden obtenir imatges mèdiques a baixa dosi, permetent col·limacions estrictes que eviten la radiació difusa que degrada dosi i qualitat. El prototip EOS, fent servir feixos de raigs-X molt fins (500 µm), va ser pensat per fer radiografia a baixa dosi de l'esquelet en bipedestació. Dissenyat amb dos tubs de raigs-X i dos detectors, realitza una adquisició per escanejat lineal biplanar sincrònica, de dues imatges (a 90º) del cos. Aquest mètode biplanar permet l'extracció automàtica de punts de referència anatòmics que poden ser matemàticament projectats com un model 3D de l'esquelet real del pacient. El programari EOS pot generar models 3D amb baixa dosi, entre 1/10 i 1/100, de les modalitats existents (radiografia computada (CR), radiografia digital (DR), o TC a baixa-dosi). L'objectiu principal de la recerca d'aquest prototip, la imatge de columna, va ser validat, i el seu subseqüent re-disseny industrial ha acabat com un dispositiu mèdic certificat per a estudis de l'esquelet: EOS ('EOS Imaging, Paris, France)'.
Preparant la fase experimental de EOS en columna, un segon objectiu va ser considerat: valorar l'aplicabilitat del prototip EOS a l'exploració radiogràfica més freqüent: radiografia de tòrax. Si EOS fos validat, permetria aplicar-lo a un altre camp del radiodiagnòstic. La radiografia del tòrax és una prova que pot comportar algunes dificultats en un dispositiu voluminós, d'escanejat lineal, biplanar, amb baixa dosi i baixa resolució espacial, com són els detectors de micro-reixeta, a investigar.
Material i mètodes: Es va preparar un estudi prospectiu comparant exploracions repetides entre EOS i un equip radiogràfic estat-de-l'art (DR, detector pla de aSi-Csi), per valorar l'aplicabilitat clínica, problemes tècnics, dosi i qualitat d'imatge. Un grup de 40 adults, amb radiografia de tòrax programada al Hôpital Univ. Erasme (Brussel·les, BE), van ser enrolats per a fer un estudi repetit amb EOS (amb 50% dosi de CR). Les imatges recollides van ser puntuades independentment per quatre radiòlegs seguint els 'European quality criteria in diagnostic imaging', incorporant reptes com valorar estructures anatòmiques fines. Es recolliren dades tècniques, estudis dosimètrics addicionals, comparatius amb CR, i mesura de dades de dosi i de rendiment del detector.
Resultats: 37 dels 40 casos van ser analitzats. La radiografia va ser correcta amb EOS, amb 13,5% d'estudis repetits. La dosi de radiació es superior amb EOS (0.22 mGy) que amb DR (0.05) però menys que la DRL o dosi per CR. Artefactes de soroll i 'arrissat' redueixen la FTM (funció de transferència de la modulació) mesurada a 1-1.5 pl/mm. La puntuació en qualitat d'imatge entre EOS i DR va ser comparable, amb millor puntuació per a EOS en via aèria, mediastí o en cobertura anatòmica.
Conclusió: EOS és una modalitat funcional que compleix les dosis de referència. La dosi és més alta que per DR i més baixa que per CR, per supressió de la radiació difusa. En qualitat d'imatge, EOS no mostra valoracions inferiors significants a la DR, fins i tot en estructures fines; pot atribuir-se a la resolució més gran de densitats i a l'absència de difusa que compensen la seva inferior resolució espacial. Caldrà fer desenvolupaments addicionals per millorar el control de la dosi i per millorar resolució, i caldrà fer recerca dirigida a validar resultats en sèries amb patologies clíniques.The EOS is a new 2D/3D radio-imaging technology that uses a gaseous radiation detector and micro-grid ionization chamber derived from Micromegas, the micro-grid developed by the Nobel Prize winner Georges Charpak and extensively used in high-energy research (eg, CERN, Geneva, Switzerland). The detectors are very efficient and enable low-dose medical imaging by stringent collimation, which avoids the undesired scattered radiation that increases dose and degrades image quality. The EOS prototype uses very thin (500 µm) fan-like x-ray beams and was planned for low-dose standing radiography of the human skeleton. It has two x-ray tubes and two detectors that allow synchronous biplanar linear acquisition of two 90-degree images of the body. The biplanar method was designed for automatic extraction of anatomic reference points that can be mathematically projected as a 3D model of a patient's skeleton. EOS software can build 3D models using lower radiation doses (1/10 to 1/100) than existing systems (computed radiography [CR], digital radiography [DR], or low-dose CT). The main application of the prototype, spine imaging, has been validated, and the subsequent, re-designed industrial EOS (EOS Imaging, Paris, France) has attained certification for skeletal studies. While preparing the experimental phase of EOS for spine imaging, a second objective was considered: to assess applicability of the EOS prototype to another field of imaging, the chest x-ray, the most common radiologic exam. Chest x-rays could pose several difficulties for a large, linear-scanning, biplanar, low-dose and low-spatial-resolution technique, in this case micro-grid detectors, which would have to be investigated. Material and methods: A prospective study was designed to assess the clinical feasibility, technical problems, dose and image quality of EOS as compared to a state-of-the-art DR system, the aSi-CsI flat panel detector. Forty adult patients undergoing scheduled chest x-ray examinations at the Erasme University Hospital (Brussels, BE) were recruited for paired examinations using EOS (at 50% dose) and DR. Paired data and images were compiled. Image data sets were independently scored by 4 radiologists according to the European Quality Criteria in Diagnostic Imaging, with additional challenges, such as scoring of thin anatomical structures. The dosimetry data obtained were also compared to those of CR, and experimental laboratory data were compiled on collimation and detector performance. Results: 37 of 40 cases were available for complete analysis. EOS chest examinations were acquired with a 13,5% repeat rate. Radiation dose (PA) was higher for EOS (0.22 mGy) than with DX (0.05), but less than CR or reference doses (0.3 mGy). Noise and ripple artifacts lowered the MTF (Modulation Transfer Function) to 1-1.5 pl/mm. Image quality scores between EOS and DX were comparable, but with better scores for EOS in several items as air-ways, mediastinum or anatomic coverage. Conclusion: EOS is feasible for chest imaging and is compliant with the chest reference doses. Radiation dose was higher than with DR, but lower than with CR, achieved by suppressing scatter. EOS image quality scores were not significantly inferior from those of DR, even for thin structures, as the extended density resolution and absence of scatter of EOS compensated for the inferior spatial resolution. Further development is needed to reach better dose containment and improve resolution, with validation in patients having various clinical conditions.
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Polak, Katarzyna. "Role of the Eos and Helios transcription factors in regulatory T cell biology." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAJ011/document.
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Les facteurs de transcription Eos et Helios ont été décrits comme étant des modulateurs des fonctions des cellules T régulatrices (Treg). Nos résultats suggèrent qu’Eos et Helios ne sont pas nécessaires, ni pour la différenciation, ni pour les principales fonctions des cellules Treg CD4+. Cependant, les cellules Helios-/- présentent une meilleure activité suppressive et à un profil transcriptomique de cellules Treg activées. Pour tester si Eos et Helios coopèrent pour réguler les fonctions des cellules Treg, nous avons analysé les souris doubles mutantes. Nos découvertes indiquent que la perte combinée d’Eos et d’Helios n’a pas d’effet sur la biologie des cellules Treg. De plus, nous avons montré qu’Eos et Helios sont induits dans les cellules Treg CD8+. Néanmoins, seule la perte d’Helios ou celle combinée d’Eos et d’Helios affectent leur différenciation. Tous ces résultats suggèrent donc qu’Eos et Helios ne sont pas requis pour réguler les fonctions essentielles des cellules TregThe transcription factors Eos and Helios have been described as modulators of regulatory T cell (Treg) functions. Our results suggest that they are not necessary for the differentiation and essential functions of CD4+ Treg cells. However, Helios-/- cells present a superior suppressive activity and a transcriptional profile of activated Treg cells. To test if Eos and Helios can cooperate to regulate Treg cell functions, we then analyzed double null mice. Our findings indicate that loss of both Eos and Helios has no effect on Treg cell biology during homeostasis. In addition, we showed that Eos and Helios are induced in CD8+ Treg cells. However, only loss of Helios, or both Helios and Eos, affect their differentiation. Altogether, these results suggest that Eos and Helios are not required regulate essential CD4+ Treg cell functions, but the absence of Helios may have an impact on their level of activation. Finally, Helios and Eos may play role of in the CD8+ Treg cell compartment
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Noureddin, Borna. "Online removal of eye movement and blink artifacts from EEG signals without EOG." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/27818.
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In this thesis, two novel methods are presented for online removal of ocular artifacts (OA) from EEG without the need for EOG electrodes attached to the face. Both methods are fully automated and can remove the effects of both eye movements and blinks. The first method employs a high speed eye tracker and three frontal EEG electrodes as a reference to any nonlinear adaptive filter to remove OAs without any calibration. For the filters considered, at some frontal electrodes, using the eye tracker-based reference was shown to significantly (p < .05) improve the ability to remove OAs over using either EOG or only frontal EEG as a reference. Using an eye tracker provides the means for recording point-of-gaze and blink dynamics simultaneously with EEG, which is often desired or required in clinical studies and a variety of human computer interface applications. The second method uses a biophysical model of the head and movement of the eyes to remove OAs. It only requires a short once-per-subject calibration and does not require subject-specific MRI. It was compared to four existing methods, and was shown to perform consistently over a variety of tasks. In removing both saccades and blinks, it removed more than 4 times as much OA as the other methods. In terms of distortion, it was the only method that never removed more power than was present in the original EEG. To carry out the above studies, several related original investigations and developments were needed. These included a novel algorithm to extract the blink time course from eye tracker images, a new measure of OA removal distortion, a high speed eye tracker recording system, a study to determine whether frontal EEG could be used to replace EOG for OA removal and studies of the frequency content of blinks, the effects of an electromagnetic sensor on EEG, and the effects of varying mental states on OA removal methods. In summary this thesis has helped pave the way towards a real-time EEG-based human interface that is free of OAs and does not require EOG electrodes in its operation.
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Brentzel, Kelvin, Carol Harris, and Patrick Coronado. "NPP IN-SITU GROUND SYSTEM - BRIDGING TECHNOLOGIES BETWEEN EOS, NPP AND THE FUTURE." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605585.
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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaAs part of the National Polar-orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP), the Direct Readout Laboratory (DRL) of NASA/GSFC Code 935, is developing the prototype NPP In-Situ Ground System (NISGS). The NISGS supports earth remote sensing, and its functions bridge from all EOS satellites to planning for future NASA and interagency launches. The NISGS solution enables the end user to acquire and process NPP and predecessor instrument data, and provide a means to make these technologies and data products available to the Direct Broadcast Community. This document describes the NISGS model, methodology, and system architecture.
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Scorgie, Donald. "A fast forward model for the assimilation of radiances from the EOS-MLS." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/14367.
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In this thesis the idea of using neural networks as a forward model for the EOS-MLS (Earth Observation System – Microwave Limb Sounder) is considered for a direct assimilation scheme. Neural networks are a type of non-linear regression technique that can provide fast, accurate results and are used extensively in many different fields. Here a neural network is constructed to act as a forward model for the EOS-MLS. The neural network uses a temperature profile and tangent pressure levels as inputs and produces the corresponding radiance profile for one channel of the EOS-MLS. The work here primarily concentrates on one band of the EOS-MLS that is centred on an oxygen line and whose radiances are affected only by temperature for the majority of the channels. It shows that a neural network can function as a forward model in this case, producing radiances that are within instrument noise and for most channels, within half the instrument noise. Adding ozone to the forward model affects the radiances in only two channels of this band, increasing the radiances in some minor frames by around ~10K. It was found that this difference could be accounted for in the neural network forward model by adding ozone to the inputs. A second band, which is centred on an ozone line, is briefly considered. It was found that above 150hPa the radiances from this band could be modelled well using a neural network. Below this height, the neural network produced large errors in radiance (of around 1.5K – four times the instrument noise). This is thought to be due to the effects of water vapour. A problem specific to limb sounders that must be faced when doing direct assimilation is determining the tangent pressures of the radiances. During retrieval, these tangent pressures are normally retrieved as part of the state vector and discarded. For an assimilation process, these tangent pressures may be unavailable and have to be deduced in some way. Here, a neural network is used to retrieve tangent pressures outside the assimilation process. These retrieved tangent pressures can then be used by the forward model and assumed to be correct. It was found that tangent pressures could be retrieved with an accuracy of around 50m, much better than required for a forward model. The final problem faced within this thesis is the creation of the Jacobian of the instrument forward model. This is the derivative of the radiances with respect to the state vector and is used by the assimilation process to update the model fields during the assimilation process.
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Palma, André Manuel Moreira. "Predictive methods for the association parameters of multifunctional molecules with the CPA EoS." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22848.
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Doutoramento em Engenharia QuímicaO projeto e otimização de processos envolvendo moléculas associativas multifuncionais é de elevada importância para as indústrias química, petroquímica, farmacêutica, alimentar, energética e de cosméticos. A equação de estado (EoS) Cubic –Plus-Association (CPA) tem demonstrado ser um modelo termodinâmico adequado para a descrição de diversas moléculas associativas. Este modelo é utilizado frequentemente na indústria de gás e petróleo para a descrição, entre outros, de sistemas de água com hidrocarbonetos e de formação e inibição de hidratos de gás. Os seus parâmetros são geralmente obtidos através de um ajuste à pressão de saturação e de densidade do liquido de um composto puro. Contudo, a falta/impossibilidade de medição deste tipo de dados (visto alguns destes compostos não existirem como líquidos puros) dificulta a sua utilização. Desta forma, o uso da CPA em simuladores de processos é limitado, visto não termos acesso a parâmetros para um largo grupo de compostos. Além disto, os engenheiros de processo não têm disponibilidade para parametrizar cada composto não disponível na literatura. Como tal, são necessários métodos preditivos para estes parâmetros para um uso eficaz da CPA em simuladores de processo. O principal objetivo deste trabalho é generalizar o uso da CPA para moléculas multifuncionais. A contribuição do termo associativo foi generalizada para aceitar qualquer número de grupos associativos em cada molécula, com número e carácter (eletrófilo, nucleófilo ou hibrido) dos sítios definidos pelo utilizador. Foram desenvolvidas ferramentas para gerar automaticamente parâmetros da CPA, contudo, em vez de um ajuste geral de todos os parâmetros a dados de pressões de vapor e densidades do líquido, os parâmetros do termo associativo são passiveis de ser transferidos entre grupos similares e/ou de serem calculados por métodos de contribuição de grupo. Após isto, os restantes parâmetros (do termo cubico) podem ser obtidos através do ajuste a correlações de propriedades dos compostos puros. A utilização de outras propriedades que não pressões de vapor e densidades da fase líquida é analisada, especialmente no caso das capacidades calorificas. Uma função alfa, diferente da de Soave, foi aplicada nesta versão da CPA, sendo feita uma análise sobre as implicações desta mudança. A nova versão da CPA incorporando as alterações propostas nesta tese é extensivamente comparada com versões do modelo previamento reportadas na literatura.
Design and optimization of processes dealing with streams containing multifunctional associating molecules is of great importance to the chemical, petrochemical, pharmaceutical, cosmetics, food and energy industries. The Cubic-Plus-Association (CPA) equation of state (EoS) has been shown to be a general and accurate thermodynamic model to deal with a variety of associating molecules. It is widely used in the oil and gas industry to simulate, among others, systems with water and hydrocarbons, and hydrate formation and inhibition. Currently, CPA parameters are obtained by simultaneously fitting pure component vapour pressure and liquid density data. But the lack of such data, or the impossibility to measure them (as some of these compounds do not exist as pure liquids) hampers its use. As a result, its application in process simulators is limited, as there are no pure component parameters for every component we might be interested in. Also, process engineers who want to use the model do not want to have the trouble of fitting a set of CPA parameters for each new component. Thus, predictive methods to generate CPA parameters are needed. The main goal of this work is to generalize the use of the CPA EoS to any associating molecule. The association contribution of the model is generalized to consider any number of associating groups in each molecule with user-defined number of sites and corresponding nature (electrophile, nucleophile or hybrid). Tools are developed to automatically generate CPA parameters, but instead of simultaneously fitting all parameters from pure component vapour pressure and liquid density data, the associating parameters are transferable between similar groups and/or can be generated from a group-contribution approach. Then, the remaining (cubic) parameters can be obtained from pure component property correlations. The use of properties other than vapour pressures and liquid densities, mainly liquid heat capacities is also analysed. An alpha funtion, different from that of Soave, is employed in this version of CPA and an analysis is conducted on the implications of this change. An extensive comparison between the new model and previously reported of CPA is also carried and discussed.
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Miura, Tomoaki. "Evaluation and characterization of vegetation indices with error/uncertainty analysis for EOS-MODIS." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284157.
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A set of error/uncertainty analyses were performed on several "improved" vegetation indices (VIs) planned for operational use in the Moderate Resolution Imaging Spectroradiometer (MODIS) VI products onboard the Terra (EOS AM-1) and Aqua (EOS PM-1) satellite platforms. The objective was to investigate the performance and accuracy of the satellite-derived VI products under improved sensor characteristics and algorithms. These include the "atmospheric resistant" VIs that incorporate the "blue" band for normalization of aerosol effects and the most widely-used, normalized difference vegetation index (NDVI). The analyses were conducted to evaluate specifically: (1) the impact of sensor calibration uncertainties on VI accuracies, (2) the capabilities of the atmospheric resistant VIs and various middle-infrared (MIR) derived VIs to minimize smoke aerosol contamination, and (3) the performances of the atmospheric resistant VIs under "residual" aerosol effects resulting from the assumptions in the MODIS aerosol correction algorithm. The results of these studies showed both the advantages and disadvantages of using the atmospheric resistant VIs for operational vegetation monitoring. The atmospheric resistant VIs successfully minimized optically thin aerosol smoke contamination (aerosol optical thickness (AOT) at 0.67 μm < 1.0) but not optically thick smoke (AOT at 0.67 μm > 1.0). On the other hand, their resistances to "residual" aerosol effects were greater when the effects resulted from the correction of optically-thick aerosol atmosphere. The atmospheric resistant VIs did not successfully minimize the residual aerosol effects from optically-thin aerosol atmosphere (AOT at 0.67 μm ≤ ∼0.15), which was caused mainly by the possible wrong choice of aerosol model used for the AOT estimation and correction. The resultant uncertainties of the atmospheric resistant Vls associated with calibration, which were twice as large as that of the NDVI, increased with increasing AOT. These results suggest that the atmospheric resistant VIs be computed from partially (Rayleigh/O₃) corrected reflectances under normal atmospheric conditions (e.g., visibility > 10 km). Aerosol corrections should only be performed when biomass burning, urban/industrial pollution, and dust storms (larger AOT) are detected.
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Lee, Michael. "Développement de micro-outils pour la biodétection, les micromélangeurs et les microfiltres." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10119.
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Ce travail de thèse est consacré au développement de micro-outils pour des applications dans le domaine biomédical. Il se compose de trois volets: le premier volet est dédié au développement et caractérisation d’un immunocapteur pour la détection d'une cytokine anti-inflammatoire (Interleukine-10 (IL-10)) en utilisant le transistor EOS (Electrolyte-Oxide-Semiconductor) à base d’un nouveau diélectrique à haute constante diélectrique (high-k): l’oxyde d'hafnium (HfO2) utilisé comme transducteur. Le deuxième et le troisième volet sont consacrés respectivement à la conception et réalisation d’une part d’un micro-mélangeur ‘passif’ et d’autre part d’un micro-filtre totalement flexible par des méthodes douces de microfabrication. Des moules souples en poly(diméthylsiloxane) (PDMS) micro-structurés sont préparés à partir d'un moule mère en silicium qui a été préalablement structuré par lithographie électronique et gravure ionique réactive (RIE). Un procédé de collage direct a été mis au point pour fabriquer ces dispositifs «PDMS-sur-Polymère» suffisamment résistants en pression pour permettre des études de mélange de fluides ou pour filtrer des microparticulesThe work in this thesis is devoted to the develoment of micro-tools for the application in the biomedical domain. It is composed of three main chapters. The first chapter is devoted on the development and characterization of an immunosensor for the detection of an anti-inflammatory cytokine (Interleukin-10 (IL-10) and applied as an EOS (Electrolyte-Oxide-Semiconductor) transistor as a base for a new dielectric material with a high dielectric (high-k): hafnium oxide used as a transducer. The second and third main chapters are dedicated respectively to the conception and realization of a passive micromixer and microfilter that are both flexible using soft lithography microfabrication. The flexible micro-structured molds in poly(dimethylsiloxane) (PDMS) were prepared to peel from the master silicon mold which was beforehand structured by electron beam lithography and reactive ion etching (RIE). A process for direct covalent bonding was worked out for the fabrication of devices “PDMS bonded to Polymers” that were sufficiently resistant in pressure and permitted the studies of mixing liquids or to filter microparticles
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Bissoli, A. L. C. "Solução Multimodal para Interação Com Dispositivos de Assistência e Comunicação." Universidade Federal do Espírito Santo, 2016. http://repositorio.ufes.br/handle/10/9549.
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Previous issue date: 2016-07-29Pessoas com deficiência têm dificuldade de interagir com o ambiente onde vivem, devido às próprias limitações inerentes à sua deficiência. Atividades simples como ligar lâmpada, ventilador, televisão ou qualquer outro equipamento, de forma independente, pode ser impossível para esse grupo de pessoas. Este trabalho apresenta um sistema assistivo multimodal para controlar um ambiente inteligente por meio de sinais biológicos. Os usuários em potencial deste sistema são indivíduos com deficiências motoras graves, que desejam adquirir mais autonomia dentro do ambiente doméstico. Os sinais biológicos utilizados são sEMG, EOG e VOG. Isso possibilitou dois tipos de interação: uma empregando gestos faciais e movimento dos olhos, e a outra utilizando o rastreamento das fixações do olhar (eye/gaze tracking). Um diferencial importante deste trabalho é a utilização de dispositivos convencionais de baixo custo, fácil manuseio e de rápida configuração. No primeiro bloco de testes, o objetivo era avaliar o desempenho do sistema utilizando o Emotiv EPOC e o Eye Tracker, comparando a Taxa de Transferência de Informação (ITR) e a Utilidade (U) de ambas as Interfaces Humano-Máquina (IHM) desenvolvidas para controlar o Ambiente Inteligente. Para esses testes foram pré-estabelecidas cinco tarefas, as quais foram realizadas por dez voluntários. No segundo bloco de testes, o objetivo era avaliar a usabilidade (SUS) e o desempenho (GAS) do sistema do ponto de vista do usuário, utilizando o Eye Tracker em três aplicações diferentes: Controle do Ambiente Inteligente (AI), Comunicação Aumentativa e Alternativa (CAA) e Ambiente Virtual (AV). Os testes foram realizados por 17 voluntários (sendo dois com deficiência em todas as aplicações) e foram pré-estabelecidas 5, 5 e 18 tarefas para as três aplicações (AI, CAA e AV, respectivamente). Com relação aos resultados da avaliação de desempenho, observou-se que 15 dos 17 participantes obtiveram resultado esperado ou superior ao esperado logo na primeira utilização. Este resultado ainda pode ser melhorado, à medida que o participante obtiver maior familiaridade com o sistema.
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Landmann, Tobias. "A case study for Skukuza estimating biophysical properties of fires using EOS-MODIS satellite data /." Doctoral thesis, [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=970359403.
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Bertrand, Samuel. "Modélisation géométrique 3D in vivo du tronc humain à partir de l'imageur basse dose EOS." Phd thesis, Paris, ENSAM, 2005. http://pastel.archives-ouvertes.fr/pastel-00001505.
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L'utilisation de modèles en éléments finis du corps humain a été initiée au début des années 90 comme outil d'aide à la conception de dispositifs de sécurité automobile. Obtenir une personnalisation géométrique de tels modèles est une préoccupation récente afin d'en optimiser la biofidélité. Le but de cette étude est donc d'accroître notre compréhension des géométries externes et internes du corps humain, et fournir des outils de personnalisation de modèles numériques. En premier lieu, une base de données géométriques externes (anthropométrie corps entier) et internes(morphométrie du rachis, du bassin et du thorax) collectées sur 85 volontaires a été constituée à l'aide de mesures anthropométriques classiques et des méthodes de reconstruction stéréoradiographiques tridimensionnelles. L'exploitation de cette base de données a abouti à une description détaillée des géométries externes et internes de sujets asymptomatiques. Elle a également permis de développer et évaluer une méthode statistique d'estimation de paramètres anthropométriques (externes) et morphométriques (internes) basée sur près de 200 modèles anthropométriques (i.e. régressions linéaires simples et multiples) externe/externe et externe/interne. Grâce à cette méthode, 10 mesures anthropométriques suffisent pour modéliser la géométrie externe (43 dimensions du corps entier assis et debout) et interne (155 dimensions du bassin, vertèbres C3 à L5, et côtes niveaux 1 à 10) d'un individu (errreur moyenne: 2,3%(2
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Bernabé, Román Carlos Daniel, García Paul Antonio Plate, and Trujillo Javier Zavaleta. "Análisis y propuestas de mejora para una empresa en marcha: caso Instituto Psicopedagógico EOS Perú." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2015. http://tesis.pucp.edu.pe/repositorio/handle/123456789/9380.
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En los últimos años, la psicología y la educación han atravesado un proceso de
revalorización por parte de la sociedad peruana. Pese al crecimiento económico y a las
reformas realizadas en el sistema educativo, se han puesto en evidencia el déficit en la
calidad de la prestación tanto pública como privada, los diversos problemas que afronta la
población escolar y la necesidad de potenciar este aspecto como parte del desarrollo integral
que debiesen tener los niños y jóvenes que serán los futuros actores y conductores de
nuestra sociedad.
Dentro de estos problemas, existe un gran número de casos que escapan al alcance
del docente debido a su complejidad y en la que es necesaria la intervención de un
psicólogo. Es en este contexto en el que se desarrollan los centros e institutos
psicopedagógicos, organizaciones especializadas en resolver los problemas con trasfondos
psicológicos y que afectan el proceso de aprendizaje.
Estas organizaciones apuntan a mejorar no sólo el rendimiento escolar de la
población, sino su calidad de vida a través del diagnóstico y tratamiento de diversos
problemas o trastornos, que pueden abarcar problemas específicos del aprendizaje, del
lenguaje, déficit de atención e hiperactividad, aspectos emocionales y conductuales, entre
otros.
Uno de los principales centros en Lima Metropolitana es el Instituto
Psicopedagógico EOS Perú. Pese a contar con no muchos años en el mercado, EOS Perú ha
registrado un constante crecimiento que le ha permitido consolidar su posición en el
mercado. A través del presente proyecto profesional, y mediante el uso de herramientas de
gestión, se ha realizado un diagnóstico de esta organización con el fin de identificar sus
principales deficiencias y ventajas en el mercado.
Finalmente, se exponen los resultados del análisis y con base en ello, se propone un
plan de desarrollo organizacional, abarcando cada área del negocio. Estas propuestas de
mejora fueron desarrolladas en base a la información cualitativa y cuantitativa recopilada
por el equipo que realiza el presente proyecto y gracias al apoyo de la plana administrativa y
académica de EOS Perú.Trabajo de suficiencia profesional
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Chocos, Ruiz Miguel Edgardo. "Estudo de filtros adaptativos para a remoção de artefatos de EOG em sinais de EEG." Florianópolis, SC, 1999. http://repositorio.ufsc.br/xmlui/handle/123456789/81217.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.Made available in DSpace on 2012-10-19T00:32:09Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-09T03:28:58Z : No. of bitstreams: 1 172499.pdf: 38594896 bytes, checksum: 8eb495de1be467f13160055357a2675e (MD5)
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Göttfert, Joline. "Cointegration among cryptocurrencies : A cointegration analysis of Bitcoin, Bitcoin Cash, EOS, Ethereum, Litecoin and Ripple." Thesis, Umeå universitet, Nationalekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-161079.
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The purpose of this paper is to examine if there is cointegration between the daily closing price of the cryptocurrency Bitcoin and five other cryptocurrencies; Ethereum, Ripple, Bitcoin Cash, EOS and Litecoin in five different time periods, all ending April 9, 2019. To test if there is a long-run relationship between Bitcoin and these mentioned cryptocurrencies, two different tests for cointegration are applied; the Engle-Granger two step approach and Johansen’s cointegration test as well as a Vector Error Correction Model (VECM). The results from both cointegration tests suggest that Bitcoin is cointegrated with Bitcoin Cash, Ethereum, Litecoin and Ripple. The Johansen test and the Engle-Granger method for cointegration demonstrate that Bitcoin and EOS do not have any cointegrating relationship. Another finding is that, based on the results from the VECM estimation, the price of Bitcoin has a statistically significant long-run impact on the prices of Bitcoin Cash, Ethereum, Litecoin and Ripple.
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Quick, Mark Eric. "A biomechanical analysis of growing rods used in the management of early onset scoliosis (EOS)." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/70333/1/Mark_Quick_Thesis.pdf.
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The use of dual growing rods is a fusionless surgical approach to the treatment of early onset scoliosis (EOS) which aims to harness potential growth in order to correct spinal deformity. This study compared through in-vitro experiments the biomechanical response of two different rod designs under axial rotation loading. The study showed that a new design of telescoping growing rod preserved the rotational flexibility of the spine in comparison with rigid rods indicating them to be a more physiological way to improve the spinal deformity.
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Barringer, Bruce O. "A CCSDS Compatible High-Rate Telemetry Formatter for Space Application." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/611600.
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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaOSC is presently developing a high-rate telemetry collection and formatting component for NASA's EOS-AM1 spacecraft. This device, called the Science Formatting Equipment, is capable of collecting data at aggregate rates exceeding 130 Mbps. The collected data is formatted into CCSDS compatible data structures, error coded, and then routed either to a downlink output or to a recording device at data rates up to 150 Mbps. This paper serves as a brief introduction to this component.
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Meyer, Marlies [Verfasser], and Peter H. [Akademischer Betreuer] Hauschildt. "A new EOS module for the atmosphere modelling code PHOENIX / Marlies Meyer ; Betreuer: Peter H. Hauschildt." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/1137624914/34.
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Noon, James P. "Design of a multi-module multi-phase battery charger for the NASA EOS space platform testbed." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-08222009-040443/.
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Thornhill-Miller, Branden. "Creativity and religious experience : the potential contributions of a new 'extraordinary-ordinary-novelty-sensitivity' (EONS) theory of culture-shaping individual differences." Thesis, University of Oxford, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711676.
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Al-Meshari, Ali Abdallah. "New strategic method to tune equation-of-state to match experimental data for compositional simulation." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1388.
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Since the plus fraction of reservoir fluids has some uncertainty in its molecular weight and critical properties, equation-of-state, EOS, are generally not predictive without tuning its parameters to match experimental data. Tuning of the EOS is found to be the best method for improving the predictions of compositional reservoir simulators.
The proposed strategy for tuning EOS consists of seven steps: (1) split the laboratory plus fraction to single carbon number groups, SCN, usually up to SCN 44; the last component will be C45+, (2) use set of correlations to calculate the critical properties and acentric factor for each SCN group, (3) match the saturation pressure at reservoir temperature by altering the measured value of the molecular weight of the plus fraction using the extended composition, (4) group SCN groups to multiple carbon number groups, MCN, (5) assign critical properties and acentric factor for each MCN group, (6) rematch the saturation pressure at reservoir temperature using the grouped composition, and (7) match the volumetric data by regressing on volume shift parameters of all components in grouped composition.
This research shows an accurate method to split the plus fraction to SCN groups. The most accurate set of correlations to calculate the critical properties and acentric factor for each SCN group that will result in a small adjustment for the molecular weight of the plus fraction when saturation pressure is matched using the extended composition. The proposed strategy groups the extended composition to eight pseudocomponents. The binary interaction coefficients between hydrocarbons and between hydrocarbons and non-hydrocarbons are set to zero which dramatically reduces the simulation time.
The strategy proposed in this research for tuning EOS to match experimental data has been tested for a wide range of C7+ mole% (4 25) which covers gas condensate and volatile oil samples. Also, using this strategy to tune EOS at reservoir temperature will accurately predict the fluid properties at separator conditions and saturation pressures at different temperatures.
The scope of this research is to come up with an accurate and systematic technique for tuning an EOS for use in compositional simulation.
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Peiris, Malik Tivanka Rajiv. "Lapses in Responsiveness: Characteristics and Detection from the EEG." Thesis, University of Canterbury. Electrical and Computer Engineering, 2008. http://hdl.handle.net/10092/1261.
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Performance lapses in occupations where public safety is paramount can have disastrous consequences, resulting in accidents with multiple fatalities. Drowsy individuals performing an active task, like driving, often cycle rapidly between periods of wake and sleep, as exhibited by cyclical variation in both EEG power spectra and task performance measures. The aim of this project was to identify reliable physiological cues indicative of lapses, related to behavioural microsleep episodes, from the EEG, which could in turn be used to develop a real-time lapse detection (or better still, prediction) system. Additionally, the project also sought to achieve an increased understanding of the characteristics of lapses in responsiveness in normal subjects. A study was conducted to determine EEG and/or EOG cues (if any) that expert raters use to detect lapses that occur during a psychomotor vigilance task (PVT), with the subsequent goal of using these cues to design an automated system. A previously-collected dataset comprising physiological and performance data of 10 air traffic controllers (ATCs) was used. Analysis showed that the experts were unable to detect the vast majority of lapses based on EEG and EOG cues. This suggested that, unlike automated sleep staging, an automated lapse detection system needed to identify features not generally visible in the EEG. Limitations in the ATC dataset led to a study where more comprehensive physiological and performance data were collected from normal subjects. Fifteen non-sleep-deprived male volunteers aged 18-36 years were recruited. All performed a 1-D continuous pursuit visuomotor tracking task for 1 hour during each of two sessions that occurred between 1 and 7 weeks apart. A video camera was used to record head and facial expressions of the subject. EEG was recorded from electrodes at 16 scalp locations according to the 10-20 system at 256 Hz. Vertical and horizontal EOG was also recorded. All experimental sessions were held between 12:30 and 17:00 hours. Subjects were asked to refrain from consuming stimulants or depressants, for 4 h prior to each session. Rate and duration were estimated for lapses identified by a tracking flat spot and/or video sleep. Fourteen of the 15 subjects had one or more lapses, with an overall rate of 39.3 ± 12.9 lapses per hour (mean ± SE) and a lapse duration of 3.4 ± 0.5 s. The study also showed that lapsing and tracking error increased during the first 30 or so min of a 1-h session, then decreased during the remaining time, despite the absence of external temporal cues. EEG spectral power was found to be higher during lapses in the delta, theta, and alpha bands, and lower in the beta, gamma, and higher bands, but correlations between changes in EEG power and lapses were low. Thus, complete lapses in responsiveness are a frequent phenomenon in normal subjects - even when not sleep-deprived - undertaking an extended, monotonous, continuous visuomotor task. This is the first study to investigate and report on the characteristics of complete lapses of responsiveness during a continuous tracking task in non-sleep-deprived subjects. The extent to which non-sleep-deprived subjects experience complete lapses in responsiveness during normal working hours was unexpected. Such findings will be of major concern to individuals and companies in various transport sectors. Models based on EEG power spectral features, such as power in the traditional bands and ratios between bands, were developed to detect the change of brain state during behavioural microsleeps. Several other techniques including spectral coherence and asymmetry, fractal dimension, approximate entropy, and Lempel-Ziv (LZ) complexity were also used to form detection models. Following the removal of eye blink artifacts from the EEG, the signal was transformed into z-scores relative to the baseline of the signal. An epoch length of 2 s and an overlap of 1 s (50%) between successive epochs were used for all signal processing algorithms. Principal component analysis was used to reduce redundancy in the features extracted from the 16 EEG derivations. Linear discriminant analysis was used to form individual classification models capable of detecting lapses using data from each subject. The overall detection model was formed by combining the outputs of the individual models using stacked generalization with constrained least-squares fitting used to determine the optimal meta-learner weights of the stacked system. The performance of the lapse detector was measured both in terms of its ability to detect lapse state (in 1-s epochs) and lapse events. Best performance in lapse state detection was achieved using the detector based on spectral power (SP) features (mean correlation of φ = 0.39 ± 0.06). Lapse event detection performance using SP features was moderate at best (sensitivity = 73.5%, selectivity = 25.5%). LZ complexity feature-based detector showed the highest performance (φ = 0.28 ± 0.06) out of the 3 non-linear feature-based detectors. The SP+LZ feature-based model had no improvement in performance over the detector based on SP alone, suggesting that LZ features contributed no additional information. Alpha power contributed the most to the overall SP-based detection model. Analysis showed that the lapse detection model was detecting phasic, rather than tonic, changes in the level of drowsiness. The performance of these EEG-based lapse detection systems is modest. Further research is needed to develop more sensitive methods to extract cues from the EEG leading to devices capable of detecting and/or predicting lapses.
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O’Donnell, John. "SOME PRACTICAL CONSIDERATIONS IN THE USE OF PSEUDO-RANDOM SEQUENCES FOR TESTING THE EOS AM-1 RECEIVER." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/609651.
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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, CaliforniaThere are well-known advantages in using pseudo-random sequences for testing of data communication links. The sequences, also called pseudo-noise (PN) sequences, approximate random data very well, especially for sequences thousands of bits long. They are easy to generate and are widely used for bit error rate testing because it is easy to synchronize a slave pattern generator to a received PN stream for bit-by-bit comparison. There are other aspects of PN sequences, however, that are not as widely known or applied. This paper points out how some of the less familiar characteristics of PN sequences can be put to practical use in the design of a Digital Test Set and other specialbuilt test equipment used for checkout of the EOS AM-1 Space Data Receiver. The paper also shows how knowledge of these PN sequence characteristics can simplify troubleshooting the digital sections in the Space Data Receiver. Finally, the paper addresses the sufficiency of PN data testing in characterizing the performance of a receiver/data recovery system.