Dissertations / Theses on the topic 'Tendons Measurement Data processing'
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Jungner, Andreas. "Ground-Based Synthetic Aperture Radar Data processing for Deformation Measurement." Thesis, KTH, Geodesi och satellitpositionering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199677.
Full textDet här examensarbetet bygger på erfarenheter av arbete med en mark-baserad syntetisk apertur radar (GB-SAR) vid Geomatiska Institutet i Castelldefels (Barcelona, Spanien). SAR tekniken tillåter radar interferometri som är en vanligt förekommande teknik både på satellit och flygburna platformar. Det här arbetet beskriver instrumentets tekniska egenskaper samt behandlingen av data for att uppmäta deformationer. En stor del av arbetet har ägnats åt utveckling av GB-SAR data applikationer som koherens och interferogram beräkning, automatisering av bild matchning med skript, geokodning av GB-SAR data samt anpassning av befintliga SAR program till GB-SAR data. Slutligen har mätningar gjorts i fält for att samla in data nödvändiga for GB-SAR applikations utvecklingen samt få erfarenhet av instrumentets egenskaper och begränsningar. Huvudresultatet av fältmätningarna är att hög koherens nödvändig för interferometriska mätningar går att uppnå med relativ lång tid mellan mätepokerna. Flera faktorer som påverkar resultatet diskuteras, som det observerade områdets reflektivitet, radar bild matchningen och den illuminerande geometrin.
Arshad, Norhashim Mohd. "Real-time data compression for machine vision measurement systems." Thesis, Liverpool John Moores University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285284.
Full textJah, Moriba Kemessia. "Mars aerobraking spacecraft state estimation by processing inertial measurement unit data." Diss., Connect to online resource, 2005. http://wwwlib.umi.com/dissertations/fullcit/3178333.
Full textJohansson, Peter. "Plant Condition Measurement from Spectral Reflectance Data." Thesis, Linköping University, Computer Vision, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-59286.
Full textThe thesis presents an investigation of the potential of measuring plant condition from hyperspectral reflectance data. To do this, some linear methods for embedding the high dimensional hyperspectral data and to perform regression to a plant condition space have been compared. A preprocessing step that aims at normalized illumination intensity in the hyperspectral images has been conducted and some different methods for this purpose have also been compared.A large scale experiment has been conducted where tobacco plants have been grown and treated differently with respect to watering and nutrition. The treatment of the plants has served as ground truth for the plant condition. Four sets of plants have been grown one week apart and the plants have been measured at different ages up to the age of about five weeks. The thesis concludes that there is a relationship between plant treatment and their leaves' spectral reflectance, but the treatment has to be somewhat extreme for enabling a useful treatment approximation from the spectrum. CCA has been the proposed method for calculation of the hyperspectral basis that is used to embed the hyperspectral data to the plant condition (treatment) space. A preprocessing method that uses a weighted normalization of the spectrums for illumination intensity normalization is concluded to be the most powerful of the compared methods.
Jakovljevic, Sasa. "Data collecting and processing for substation integration enhancement." Texas A&M University, 2003. http://hdl.handle.net/1969/93.
Full textTrumstedt, Karl. "Evaluation of methods for loading and processing of measurement data in Oracle." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-181305.
Full textShasha, Ziphozakhe Theophilus. "Measurement of the usability of web-based hotel reservation systems." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2353.
Full textThe aim of this research project was to determine what the degree of usability is of a sample of online reservation systems of Cape Town hotels. The literature has indicated that the main aim of website usability is to make the engagement process with a website a more efficient and enjoyable experience. Researchers noted that well designed, high-quality websites, with grammatically accurate content, create a trustworthy online presence. User-friendly sites also attract far more traffic. Previous research has also shown that a loss of potential sales is possible due to users being unable to find what they want, if poor website design has been implemented. Loss of potential income through repeat visits is also a possibility, due to a negative user experience. The research instrument that was employed in this research is usability testing. It is a technique used to evaluate product development that incorporates user feedback in an attempt to create instruments and products that meet user needs, and to decrease costs. The research focused on Internet-based hotel reservation systems. Only the usability was measured. Both standard approaches were used in this research project, in a combined quantitative and qualitative research design. In conclusion, the purpose of this research was to determine the degree of usability of specified Cape Town hotel online reservation systems. The outcomes of this study indicated interesting patterns in that reservation systems met user requirements more often than expected. However, the figures of acceptability obtained were still below the generally accepted norms for usability. The amount of time spent to complete a booking also decreased, as users worked on more than one reservation system.
Lloyd, Timothy Brian. "Surface extraction from coordinate measurement data to facilitate dimensional inspection." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15815.
Full textZhao, Haiquan. "Measurement and resource allocation problems in data streaming systems." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34785.
Full text蘇植良 and Chek-leung Bassanio So. "A study of decision support system application in productivity measurement by micro-computer." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1985. http://hub.hku.hk/bib/B31263392.
Full textNavabi, Mohammad Jafar 1963. "EVALUATION OF A SYSTEM FOR REAL-TIME MEASUREMENT OF ANESTHETIC UPTAKE." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276582.
Full textPedroza, Albert. "IMPLEMENTATION OF DGPS AS A FLIGHT TEST PERFORMANCE MEASUREMENT TOOL." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/609790.
Full textThe accurate determination of test aircraft position and velocity is a very strong requirement in several certification and development flight test applications. This requirement often requires availability of test ranges properly instrumented with optical or radar tracking systems, precision time for data reduction and dependency on environmental and meteorological conditions. The capabilities of GPS (Global Positioning System) technology, in terms of data accuracy, speed of data availability and reduction of test operating cost, moved Bombardier Flight Test Center to make an investment and integrate a system utilizing GPS for extensive use in flight and ground test activity. Through the use of differential GPS (DGPS) procedures, Bombardier Flight Test Center was able to implement a complete system which could provide real-time data results to a very acceptable output rate and accuracy. Furthermore, the system was capable of providing post-processed data results which greatly exceeded required output rate and accuracy. Regardless of the type of aircraft testing conducted, the real-time or post-processed data could be generated for the same test. After conducting various types of testing, Bombardier Flight Test Center has accepted the DGPS as an acceptable and proper flight and ground test measurement tool for its various aircraft test platforms.
Jiang, Jeng-Shiann. "Measurement, Modeling, and Performance, of Indoor MIMO Channels." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5035.
Full textFreeman, Leopold C. "A computerized system for the detection of ventricular late potentials in the electrocardiogram." Thesis, Queensland University of Technology, 1990. https://eprints.qut.edu.au/35943/1/35943_Freeman_1990.pdf.
Full textClayton, Sarah Elisabeth. "Tracking, analysis and measurement of pedestrian trajectories." Thesis, Edinburgh Napier University, 2016. http://researchrepository.napier.ac.uk/Output/452997.
Full textOrtmanis, Andris. "The development of a microcomputer controlled variable pathlength turbidimeter /." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65460.
Full text湯世傑 and Sai-kit Tong. "A computer-aided measurement system for monopolar high-voltage direct-current coronating lines." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1986. http://hub.hku.hk/bib/B31207467.
Full textBoyle, John K. "Performance Metrics for Depth-based Signal Separation Using Deep Vertical Line Arrays." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2198.
Full textLau, Kai Kwong Gervas. "A new statistical stroke recovery method and measurement for signature verification." HKBU Institutional Repository, 2005. http://repository.hkbu.edu.hk/etd_ra/661.
Full textAllard, Christopher E. "Development of a non-destructive optical method to measure residual stress in thin rectangular samples employing digital image processing." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/20645.
Full textYan, Hongxiang. "From Drought Monitoring to Forecasting: a Combined Dynamical-Statistical Modeling Framework." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3292.
Full textBank, Jason Noah. "Propagation of Electromechanical Disturbances across Large Interconnected Power Systems and Extraction of Associated Modal Content from Measurement Data." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/73008.
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Bottomley, Laura Jones. "The application of IBM PC's and distrometers in a satellite propagation experiment." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/90919.
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Nolte, Ernst Hendrik. "Image compression quality measurement : a comparison of the performance of JPEG and fractal compression on satellite images." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51796.
Full textENGLISH ABSTRACT: The purpose of this thesis is to investigate the nature of digital image compression and the calculation of the quality of the compressed images. The work is focused on greyscale images in the domain of satellite images and aerial photographs. Two compression techniques are studied in detail namely the JPEG and fractal compression methods. Implementations of both these techniques are then applied to a set of test images. The rest of this thesis is dedicated to investigating the measurement of the loss of quality that was introduced by the compression. A general method for quality measurement (signal To Noise Ratio) is discussed as well as a technique that was presented in literature quite recently (Grey Block Distance). Hereafter, a new measure is presented. After this, a means of comparing the performance of these measures is presented. It was found that the new measure for image quality estimation performed marginally better than the SNR algorithm. Lastly, some possible improvements on this technique are mentioned and the validity of the method used for comparing the quality measures is discussed.
AFRIKAANSE OPSOMMING: Die doel van hierdie tesis is om ondersoek in te stel na die aard van digitale beeldsamepersing en die berekening van beeldkwaliteit na samepersing. Daar word gekonsentreer op grysvlak beelde in die spesifieke domein van satellietbeelde en lugfotos. Twee spesifieke samepersingstegnieke word in diepte ondersoek naamlik die JPEG en fraktale samepersingsmetodes. Implementasies van beide hierdie tegnieke word op 'n stel toetsbeelde aangewend. Die res van hierdie tesis word dan gewy aan die ondersoek van die meting van die kwaliteitsverlies van hierdie saamgeperste beelde. Daar word gekyk na 'n metode wat in algemene gebruik in die praktyk is asook na 'n nuwer metode wat onlangs in die literatuur veskyn het. Hierna word 'n nuwe tegniek bekendgestel. Verder word daar 'n vergelyking van hierdie mates en 'n ondersoek na die interpretasie van die 'kwaliteit' van hierdie kwaliteitsmate gedoen. Daar is gevind dat die nuwe maatstaf vir kwaliteit net so goed en selfs beter werk as die algemene maat vir beeldkwaliteit naamlik die Sein tot Ruis Verhouding. Laastens word daar moontlike verbeterings op die maatstaf genoem en daar volg 'n bespreking oor die geldigheid van die metode wat gevolg is om die kwaliteit van die kwaliteitsmate te bepaal
Simonsen, Michael D. "Design and Measurement of a Real-Time Peer-to-Peer Game." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1187.pdf.
Full textVogelsang, Stefan. "Monitoring Tools File Specification." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199034.
Full textYap, Han Lun. "Constrained measurement systems of low-dimensional signals." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/47716.
Full textCunningham, Jock Bernard. "Bulk analysis of lead smelter sinter plant products for sulphur (and Pb, Fe, Zn) using neutron inelastic scatter gamma-rays." Thesis, Queensland University of Technology, 1987.
Find full textPellegrino, Gregory S. "Design of a Low-Cost Data Acquisition System for Rotordynamic Data Collection." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/1978.
Full textNavarrete, Hurtado Hugo Ariel. "Electromagnetic models for ultrasound image processing." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/398235.
Full textEl ruido Speckle aparece cuando se utilizan sistemas de iluminación coherente, como por ejemplo Láser, Radar de Apertura Sintética (SAR), Sonar, Resonancia Magnética, rayos X y ultrasonidos. Los ecos dispersados por los centros dispersores distribuidos al azar en la estructura microscópica del medio son el origen de este fenómeno, que caracteriza las imágenes coherentes con un aspecto granular. Se puede demostrar que el ruido Speckle es de carácter multiplicativo, fuertemente correlacionados y lo más importante, con estadística no Gaussiana. Estas características son muy diferentes de la suposición tradicional de ruido aditivo gaussiano blanco, a menudo asumida en la segmentación de imágenes, filtrado, y en general, en el procesamiento de imágenes; lo cual se traduce en la reducción de la eficacia de los métodos para la extracción de información de la imagen final. La modelización estadística es de particular relevancia cuando se trata con datos Speckle, a fin de obtener algoritmos de procesamiento de imágenes eficientes. Además, el procesamiento no lineal de señales empleado en sistemas clínicos de imágenes por ultrasonido para reducir el rango dinámico de la señal de eco de entrada de manera que coincida con el rango dinámico más pequeño del dispositivo de visualización y resaltar así los objetos con dispersión más débil, modifica radicalmente la estadística de los datos. Esta reducción en el rango dinámico se logra normalmente a través de un amplificador logarítmico es decir, la compresión logarítmica, que comprime selectivamente las señales de entrada y una forma analítica para la expresión de la función de densidad de los datos transformados logarítmicamente es por lo general difícil de derivar. Esta tesis se centra en las distribuciones estadísticas de la amplitud de la señal comprimida logarítmicamente en las imágenes coherentes, y su principal objetivo es el desarrollo de un modelo estadístico general para las imágenes por ultrasonido comprimidas logarítmicamente en modo-B. El modelo desarrollado se adaptó, realizando las analogías físicas relevantes, del modelo multiplicativo en radares de apertura sintética (SAR). El Modelo propuesto puede describir correctamente los datos comprimidos logarítmicamente a partir datos generados con los diferentes modelos propuestos en la literatura especializada en procesamiento de imágenes por ultrasonido. Además, el modelo se aplica con éxito para modelar ecocardiografías en vivo. Se enuncian y demuestran los teoremas necesarios para dar cuenta de una demostración matemática rigurosa de la validez y generalidad del modelo. Además, se da una interpretación física de los parámetros y se establecen las conexiones entre el teorema central del límite generalizado, el modelo multiplicativo y la composición de distribuciones para los diferentes modelos propuestos hasta a la fecha. Se demuestra además que los parámetros del amplificador logarítmico se incluyen dentro de los parámetros del modelo y se estiman usando los métodos estándar de momentos y máxima verosimilitud. Por último, tres aplicaciones se desarrollan: filtrado de ruido Speckle, segmentación de ecocardiografías y un nuevo enfoque para la evaluación de la fracción de eyección cardiaca.
Melius, Matthew Scott. "Identification of Markov Processes within a Wind Turbine Array Boundary Layer." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1422.
Full textCastagno, Thomas A. "The effect of knee pads on gait and comfort." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0426104-174716.
Full textGooding, Linda Wells. "Effects of retinal disparity depth cues on cognitive workload in 3-D displays." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08062007-094403/.
Full textRusson, Ryan K. "Computerized Measurement of Psychological Vital Signs in a Clinical Setting." [Tampa, Fla. : s.n.], 2003. http://purl.fcla.edu/fcla/etd/SFE0000097.
Full textKim, Kye Hyun 1956. "Classification of environmental hydrologic behaviors in Northeastern United States." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277083.
Full textJamal, Sara. "Analyse spectrale des données du sondage Euclid." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0263.
Full textLarge-scale surveys, as Euclid, will produce a large set of data that will require the development of fully automated data-processing pipelines to analyze the data, extract crucial information and ensure that all requirements are met. From a survey, the redshift is an essential quantity to measure. Distinct methods to estimate redshifts exist in the literature but there is no fully-automated definition of a reliability criterion for redshift measurements. In this work, we first explored common techniques of spectral analysis, as filtering and continuum extraction, that could be used as preprocessing to improve the accuracy of spectral features measurements, then focused on developing a new methodology to automate the reliability assessment of spectroscopic redshift measurements by exploiting Machine Learning (ML) algorithms and features of the posterior redshift probability distribution function (PDF). Our idea consists in quantifying, through ML and zPDFs descriptors, the reliability of a redshift measurement into distinct partitions that describe different levels of confidence. For example, a multimodal zPDF refers to multiple (plausible) redshift solutions possibly with similar probabilities, while a strong unimodal zPDF with a low dispersion and a unique and prominent peak depicts of a more "reliable" redshift estimate. We assess that this new methodology could be very promising for next-generation large spectroscopic surveys on the ground and space such as Euclid and WFIRST
Campbell, Castillo Inez. "The effects of physical, biological and anthropogenic noise on the occurrence of dolphins in the Pacific region of the Panama Canal." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/4484.
Full textFouche, Ilse. "Assessing the use of GIS in the poverty alleviation strategy of the West Coast District Municipality." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/21657.
Full textENGLISH ABSTRACT: Poverty is a complex issue and has many causes which are wide-ranging with devastating effects. In order for these effects of poverty to be minimilised and contained, a poverty alleviation strategy has to be implemented in an effective and efficient manner. In order for a poverty alleviation strategy to be effective for the main stakeholders in the decision-making process the various components of poverty have to be fully comprehended. The extent of poverty needs to be determined by employing poverty measurement techniques which will enable the decision-maker to use a (GIS) to store the poverty data. This Geographical Information System (GIS) enables the decision-makers to capture, manage, store and analyse the poverty data. The GIS can be used to map poverty data and allow a visual display of the poverty data to indicate where the greatest needs are and to allow that the relevant stakeholders and policy makers focus scarce resources and efforts to these areas. Therefore poverty mapping can greatly assist government with the implementation process of the policy process specifically in the West Coast region, where a Poverty Alleviation Strategy is currently being implemented. This implementation plan of the West Coast Poverty Alleviation Strategy can be much more effective if used in conjunction with a GIS for poverty mapping. Therefore decision-makers in the West Coast District Municipality will be provided with an opportunity to utilise the poverty data in a more effective manner which will improve their decision-making process thorough the assistance of a decision-support tool such as the visual display of poverty in the West Coast region.
AFRIKAANSE OPSOMMING: Die toestand van armoede is ingewikkeld en kompleks. Armoede het verskeie negatiewe nagevolge. Om hierdie negatiewe nagevolge te bekamp, moet ʼn armoedeverligting strategie in ʼn effektiewe manier geïmplementeer word. Die armoedeverligting strategie kan net vir die hoof rolspelers effektief wees tydens die besluitnemings proses, as die hoof oorsake van armoede in volle konteks beskryf en verstaan word. Die toestand van armoede kan net bepaal word deur om gebruik te maak van verskei armoede meetings tegnieke. Hierdie tegnieke sal die besluitnemer in staat stel om ʼn Geografiese Inligtings Stelsel (GIS) te kan gebruik wat die armoede data kan stoor. GIS kan gebruik word om die toestand van armoede visueel te illustreer. Deur gebruik te maak van ʼn kaart om aan te wys waar die grootste behoefte is i.t.v. die armoede data en waar die rolspelers hulle hulpbronne en kragte moet saamsnoer. Armoede kartering kan daarom ʼn geweldige hulp verleen aan die Owerhede. Veral i.t.v. die beleid implementerings proses in die Weskus Armoedeverligting Strategie, wat ʼn sleutel armoede verligting aksie plan bevat. Die beleid proses sal net verbeter word, deur vir die besluitnemers in die Weskus Distrik Munisipaliteit ʼn geleentheid te skep om die armoede data in ʼn alternatiewe manier te gebruik. Armoede kartering is so alternatiewe manier en sal deur ʼn besluitneming ondersteunings sisteem soos GIS die algehele besluitnemings proses in die Weskus streek verbeter.
Senthilvasan, Jeevanandam. "Dynamic response of curved box girder bridges." Thesis, Queensland University of Technology, 1997.
Find full textСтригун, В. В. "Програмне забезпечення для обробки та відображення інформації про параметри руху, отриманої від засобів відеореєстрації." Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/24987.
Full textОб’єкт дослідження – програмний засіб для обробки інформації отриманої від засобів відеореєстрації та визначення характеристик положення об’єкту в просторі. Мета роботи – підвищення ефективності процесу визначення траєкторних параметрів рухомих об'єктів. Методи дослідження – системний аналіз та синтез організаційно-технічних систем, теорія ефективності та оптимізації, моделювання складних технічних систем. Основні результати, отримані в роботі: проведено аналіз існуючих та перспективних програмних засобів, призначених для обробки інформації, що отримана від засобів відеореєстрації; розроблена загальна структура програмного засобу та алгоритми роботи окремих модулів; розроблено спеціалізоване програмне забезпечення для обробки та відображення інформації, отриманої від засобів відеореєстрації; проведено попередні та приймальні випробування спеціалізованого програмного забезпечення для обробки та відображення інформації, отриманої від засобів відеореєстрації; відпрацьовано технічну документацію на програмний засіб. Результати роботи можуть бути використані для прискорення обробки даних та відображення інформації, отриманої від засобів відеореєстрації під час проведення випробувань. Для реалізації запропонованого сервісу буде використовуватися мова програмування Java та інтегроване середовище розробки IntelliJ IDEA.
Object of research - a software tool for processing information obtained from video recording and determining the characteristics of the position of the object in space. The purpose of the work is to increase the efficiency of the process of determining the trajectory parameters of moving objects. Research methods - system analysis and synthesis of organizational and technical systems, theory of efficiency and optimization, modeling of complex technical systems. The main results obtained in the work: the analysis of the existing and perspective software means intended for processing of the information received from means of video registration is carried out; the general structure of software and algorithms of work of separate modules is developed; developed specialized software for processing and displaying information received from video recording equipment; preliminary and acceptance tests of the specialized software for processing and display of the information received from means of video registration are carried out; the technical documentation for the software has been worked out. The results of the work can be used to speed up data processing and display information obtained from video recording equipment during testing. The Java programming language and the IntelliJ IDEA integrated development environment will be used to implement the proposed service.
Galmiche, Jeanne. "Temps et latitude fournis par la station Astrolabe de Paris : application de l'analyse des correspondances à l'étude de la qualité des mesures." Paris 6, 1986. http://www.theses.fr/1986PA066344.
Full textGrando, Flavio Lori. "Arquitetura para o desenvolvimento de unidades de medição fasorial sincronizada no monitoramento a nível de distribuição." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1762.
Full textEste trabalho tem por objetivo o desenvolvimento de uma arquitetura de baixo custo para construção de unidades de medição fasorial sincronizada (PMU). O dispositivo prevê conexão com a baixa tensão da rede elétrica, de forma que, instalada neste ponto do sistema permita o monitoramento da rede de transmissão e distribuição. Os desenvolvimentos deste projeto contemplam uma arquitetura completa, com módulo de instrumentação para uso na baixa tens˜ao da rede, módulo GPS para fornecer o sinal de sincronismo e etiqueta de tempo das medidas, unidade de processamento com sistema de aquisição, estimação de fasores e formatação dos dados de acordo com a norma e, por fim, módulo de comunicação para transmissão dos dados. Para o desenvolvimento e avaliação do desempenho da arquitetura, desenvolveu-se um conjunto de aplicativos em ambiente LabVIEW com funcionalidades específicas que permitem analisar o comportamento das medidas e identificar as fontes de erro da PMU, além de aplicar todos os testes previstos pela norma IEEE C37.118.1. O primeiro aplicativo, útil para o desenvolvimento da instrumentação, consiste em um gerador de funções integrado com osciloscópio, que permite a geração e aquisição de sinais de forma sincronizada, além da manipulação das amostras. O segundo e principal deles, é a plataforma de testes capaz de gerar todos os ensaios previstos pela norma, permitindo também armazenar os dados ou fazer a análise das medidas em tempo real. Por fim, um terceiro aplicativo foi desenvolvido para avaliar os resultados dos testes e gerar curvas de ajuste para calibração da PMU. Os resultados contemplam todos os testes previstos pela norma e um teste adicional que avalia o impacto de ruído. Além disso, através de dois protótipos conectados à instalação elétrica de consumidores de um mesmo circuito de distribuição, obteve-se registros de monitoramento que permitiram a identificação das cargas no consumidor, análise de qualidade de energia, além da detecção de eventos a nível de distribuição e transmissão.
This work presents a low cost architecture for development of synchronized phasor measurement units (PMU). The device is intended to be connected in the low voltage grid, which allows the monitoring of transmission and distribution networks. Developments of this project include a complete PMU, with instrumentation module for use in low voltage network, GPS module to provide the sync signal and time stamp for the measures, processing unit with the acquisition system, phasor estimation and formatting data according to the standard and finally, communication module for data transmission. For the development and evaluation of the performance of this PMU, it was developed a set of applications in LabVIEW environment with specific features that let analyze the behavior of the measures and identify the sources of error of the PMU, as well as to apply all the tests proposed by the standard. The first application, useful for the development of instrumentation, consists of a function generator integrated with an oscilloscope, which allows the generation and acquisition of signals synchronously, in addition to the handling of samples. The second and main, is the test platform, with capabality of generating all tests provided by the synchronized phasor measurement standard IEEE C37.118.1, allowing store data or make the analysis of the measurements in real time. Finally, a third application was developed to evaluate the results of the tests and generate calibration curves to adjust the PMU. The results include all the tests proposed by synchrophasors standard and an additional test that evaluates the impact of noise. Moreover, through two prototypes connected to the electrical installation of consumers in same distribution circuit, it was obtained monitoring records that allowed the identification of loads in consumer and power quality analysis, beyond the event detection at the distribution and transmission levels.
Johnson, Kevin Robert. "In Vivo Coronary Wall Shear Stress Determination Using CT, MRI, and Computational Fluid Dynamics." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14482.
Full textJavadi, Mohammad Saleh. "Computer Vision Algorithms for Intelligent Transportation Systems Applications." Licentiate thesis, Blekinge Tekniska Högskola, Institutionen för matematik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17166.
Full textLeprettre, Benoit. "Reconnaissance de signaux sismiques d'avalanches par fusion de données estimées dans les domaines temps, temps-fréquence et polarisation." Université Joseph Fourier (Grenoble ; 1971-2015), 1996. http://www.theses.fr/1996GRE10182.
Full textSimioni, Maicon Cezar. "Monitoramento da frequência cardíaca via método de magnificação de vídeo e Euleriana em tempo real." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1373.
Full textMonitoring vital signs in patients is used to obtain relevant data for medical decisions in a fast way. However, this measurement is both inefficient and difficult, if not impossible in certain cases, such as in burnt victims, due to the impossibility of placing the electrodes directly on the skin or in infants, because of the fragility of skin. This study aims to develop of a system for continuous acquisition of photopletismografics (PPG) signals for the telemetry of heart rate in real time in a low cost platform using the OpenCV library and the method developed by MIT called the Eulerian Video Magnification, amplifying variations that are imperceptible to the naked eye. To develop the system were used the hardware platform Raspberry Pi version B with ARM11 700MHz processor and 512MB RAM. The heart rate data collected from the experi- ments were compared with data collected by a finger oximeter model More Fitness MF-425 it was chosen, by using the same working principle "PPG"to effect the measurement. After data collection was estimated the confidence interval to measure system accuracy, which corresponded to 96,5% compared to the oximeter used. It became clear that the developed system used to measure heart rate via magnification method of Eulerian live video is a low-cost technology (approximately R$ 300.00) compared to the multiparameter monitors used for monitoring critically patients, ranging in cost from R$ 8,000.00 to R$ 34,000.00. So also, it contributes to cost reduction in the treatment to the patient in need of constant monitoring, enabling with the savings generated by the acquisition and deployment of this technology makes possible greater investment in other areas of hospitals.
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Galybin, Konstantin A. "P-wave velocity model for the southwest of the Yilgarn Craton, Western Australia and its relation to the local geology and seismicity." University of Western Australia. School of Earth and Geographical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0167.
Full textRomani, Eduardo. "Avaliação de qualidade de vídeo utilizando modelo de atenção visual baseado em saliência." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1169.
Full textVideo quality assessment plays a key role in the video processing and communications applications. An ideal video quality metric shall ensure high correlation between the video distortion prediction and the perception of the Human Visual System. This work proposes the use of visual attention models with bottom-up approach based on saliencies for video qualitty assessment. Three objective metrics are proposed. The first method is a full reference metric based on the structural similarity. The second is a no reference metric based on a sigmoidal model with least squares solution using the Levenberg-Marquardt algorithm and extraction of spatial and temporal features. And, the third is analagous to the last one, but uses the characteristic Blockiness for detecting blocking distortions in the video. The bottom-up approach is used to obtain the salient maps, which are extracted using a multiscale background model based on motion detection. The experimental results show an increase of efficiency in the quality prediction of the proposed metrics using salient model in comparission to the same metrics not using these model, highlighting the no reference proposed metrics that had better results than metrics with reference to some categories of videos.
Vieira, Camila Silva. "Processamento de erros grosseiros através do índice de não-detecção de erros e dos resíduos normalizados." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-22032018-144505/.
Full textThis dissertation deals with the problem of Gross Errors processing based on the use of the so-called Undetectability Index, or just UI. This index was developed recently and it is capable to classify the measurements according to their characteristics of not reflecting their errors into the residuals of the weighted least squares state estimation process. Gross errors in measurements with higher UIs are very difficult to be detected by methods based on the residual analysis, as the errors in those measurements are masked, i.e., they are not reflected in the residuals. Initially, this dissertation demonstrates that a non-detectable gross error (error in a measurement with high UI) may affect more the accuracy of the estimated state variables than a detectable gross error (error in a measurement with low UI). Therefore, justifying the importance of studies that make possible gross errors processing in measurements with high UI. In this dissertation, several computational simulations are carried out to analyze the influence of different weights of measurements in the UI index and also in the accuracy of the estimated state variables. It is chosen a way that stood out as the most appropriate for weighing the measurements. Finally, in this dissertation, the studies referring to the UI is extended for a hybrid weighted least squares state estimator.
Gleissner, Filip. "Koexistence mobilních komunikačních systémů GSM-EDGE a UMTS." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233470.
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