Position Estimation
Mostrando 13-24 de 54 artigos, teses e dissertações.
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13. Occurrence and abundance of a mariner-like element in freshwater and terrestrial planarians (Platyhelminthes, Tricladida) from southern Brazil
Transposable elements are DNA sequences present in all the large phylogenetic groups, both capable of changing position within the genome and constituting a significant part of eukaryotic genomes. The mariner family of transposons is one of the few which occurs in a wide variety of taxonomic groups, including freshwater planarians. Nevertheless, so far only
Genetics and Molecular Biology. Publicado em: 04/09/2009
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14. Adaptive complementary filtering algorithm for mobile robot localization
As a mobile robot navigates through an indoor environment, the condition of the floor is of low (or no) relevance to its decisions. In an outdoor environment, however, terrain characteristics play a major role on the robot's motion. Without an adequate assessment of terrain conditions and irregularities, the robot will be prone to major failures, since the e
Journal of the Brazilian Computer Society. Publicado em: 2009-09
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15. Algoritmos de navegação em tempo real para um sistema GPS de posicionamento relativo de precisão / Real time navigation algorithms for a percise GPS relative positioning system
The GPS signal is subject to several error sources in the measurements. The combined effects of these errors in the propagation signal cause a degradation in precision of positioning. However, using carrier phase measurements, it is possible to reduce positioning error up to 100 times, if compared with positioning using code measurernents. However, this type
Publicado em: 2009
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16. Geoestatística no estudo da variabilidade espacial de atributos químicos e físicos do solo e da produtividade da pimenta-do-reino / Geostatistics in the study of the spatial variability of chemical and physical attributes of soil and productivity of the Piper nigrum L.
The culture of Piper nigrum L. is one of the most profitable crops in the north of the Espírito Santo State. In view of the actual situation of nutritional management of culture adopted in the State, allied to the cultivation in regions of low natural fertility and to the high nutritional requirement, new technologies have been aggregated to the production
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2008
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17. Análise de estruturas de rede neocognitron para aplicação no reconhecimento facial
The present work consists in the use of the combination of neocognitron networks for the face recognition tasks integrating a system of face recognition, categorized as holistic method, by the fact of to approach all the face in the extration of the characteristics of the input image. The use of the face as biometric attribute in the recognition of individuo
Publicado em: 2008
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18. Desemprego, trabalho sem proteção social e saúde: Uma análise do indivíduo e do contexto
The social and institutional changes occurring in the last decades due to globalization, employment crisis and erosions in social welfare conquests, are printing new faces to social inequalities, with important repercussions in population health. This thesis investigated health inequalities related to individuals´ labor market position. The labor market sta
Publicado em: 2008
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19. Using augmented state Kalman filter to localize multi autonomous underwater vehicles
The present paper describes a system for the construction of visual maps ("mosaics") and motion estimation for a set of AUVs (Autonomous Underwater Vehicles). Robots are equipped with down-looking camera which is used to estimate their motion with respect to the seafloor and built an online mosaic. As the mosaic increases in size, a systematic bias is introd
Journal of the Brazilian Computer Society. Publicado em: 2007-12
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20. Polymorphism in the promoter region of the mannose-binding lectin gene among human T-cell lymphotropic virus infected subjects
The present study investigated the frequency of the mutations at positions -550 and -221 of the mannose-binding lectin (MBL) gene in a sample of 75 human T-cell lymphotropic virus (HTLV) infected patients and 96 HTLV seronegative controls, in order to evaluate the occurrence of a possible association between the polymorphism and HTLV infection. A sequence sp
Memórias do Instituto Oswaldo Cruz. Publicado em: 2007-12
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21. Estimação de posição e quantificação de erro utilizando geometria epipolar entre imagens. / Position estimation and error quantification using epipolar geometry between images.
Position estimation is the direct result of scene reconstruction, one of computer visions fields. It is also an important information for the control of mechanical systems - specially the autonomous robotic systems. As an engineering application, those systemsperformance must be evaluated in terms of efficiency and effectiveness, measured by processing costs
Publicado em: 2007
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22. Visual servoing system of a pan-tilt camera using region template tracking. / Sistema de controle servo visual de uma câmera pan-tilt com rastreamento de uma região de referência.
A pan-tilt camera can move around two rotational axes (pan and tilt), allowing its lens to be pointed to any point in space. A possible application of the camera is to keep it pointed to a certain moving target, through appropriate angular pan-tilt positioning. This work presents a visual servoing technique, which uses first the images captured by the camera
Publicado em: 2007
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23. Economics and Happiness: a empirical study of the deteminants of happiness in Brazil. / Economia e felicidade: um estudo empírico dos determinantes da felicidade no Brasil
The objective of this work is to analyze the influence of possible empirical determinants on Brazilian happiness. The determinants considered were: marital status age, education, gender, region, religion, ethnic description, income, relative position of income, unemployment, unemployment probability of employed individual, employment probability of unemploye
Publicado em: 2007
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24. Analysis of equations for estimation of stature and body fat percentile for children from 6 to 10 years old / Análise de equações para estimativa de estatura e percentual de gordura corporal em crianças de 6 a 10 anos
The present work analyzed available equations in the literature for height estimate and evaluation of the percentile of children s body fat from 6 to 10 years old. The sample consisted of 404 children from public schools, whose were eutrophic for the Body Mass Index /Age and Stature/Age of the Center for Disease Control and Prevention National Center for Hea
Publicado em: 2007