Tesis sobre el tema "Metric mapping"
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Simhon, Shlomo Saul. "Islands of reliability for hybrid topological-metric mapping". Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20864.
Texto completoRuth, Harry Leonard Jr. "Conformal densities and deformations of uniform loewner metric spaces". Cincinnati, Ohio : University of Cincinnati, 2008. http://www.ohiolink.edu/etd/view.cgi?ucin1210203872.
Texto completoCommittee/Advisors: David Herron PhD (Committee Chair), David Minda PhD (Committee Member), Nageswari Shanmugalingam PhD (Committee Member). Title from electronic thesis title page (viewed Sep.3, 2008). Keywords: conformal density; uniform spaces; Loewner; quasisymmetry; quasiconofrmal. Includes abstract. Includes bibliographical references.
Thau, Robert S. (Robert Solomon). "Reliably mapping a robot's enivronment using fast vision and local, but not global, metric data". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10306.
Texto completoSAMMARTANO, GIULIA. "Suitability Of 3D Dense Models For Rapid Mapping Strategies On Cultural Heritage Documentation And Conservation. Validation of metric and non-metric information extraction from integrated solutions". Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2703098.
Texto completoGonzalez, Villasanti Hugo Jose. "Stability of Input/Output Dynamical Systems on Metric Spaces: Theory and Applications". The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu155558269238935.
Texto completoZolfaghari, Reza. "Large Deformation Diffeomorphic Metric Mapping Provides New Insights into the Link Between Human Ear Morphology and the Head-Related Transfer Functions". Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16701.
Texto completoSakamoto, Ryo. "Detection of Time-Varying Structures by Large Deformation Diffeomorphic Metric Mapping to Aid Reading of High-Resolution CT Images of the Lung". Kyoto University, 2014. http://hdl.handle.net/2433/189353.
Texto completoHume, David S. "Embeddings of infinite groups into Banach spaces". Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:e38f58ec-484c-4088-bb44-1556bc647cde.
Texto completoHabib, Yassine. "Monocular SLAM densification for 3D mapping and autonomous drone navigation". Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0390.
Texto completoAerial drones are essential in search and rescue missions as they provide fast reconnaissance of the mission area, such as a collapsed building. Creating a dense and metric 3D map in real-time is crucial to capture the structure of the environment and enable autonomous navigation. The recommended approach for this task is to use Simultaneous Localization and Mapping (SLAM) from a monocular camera synchronized with an Inertial Measurement Unit (IMU). Current state-of-the-art algorithms maximize efficiency by triangulating a minimum number of points, resulting in a sparse 3D point cloud. Few works address monocular SLAM densification, typically by using deep neural networks to predict a dense depth map from a single image. Most are not metric or are too complex for use in embedded applications. In this thesis, we identify and evaluate a state of-the-art monocular SLAM baseline under challenging drone conditions. We present a practical pipeline for densifying monocular SLAM by applying monocular depth prediction to construct a dense and metric 3D voxel map. Using voxels allows the efficient construction and maintenance of the map through raycasting, and allows for volumetric multi-view fusion. Finally, we propose a scale recovery procedure that uses the sparse and metric depth estimates of SLAM to refine the predicted dense depth maps. Our approach has been evaluated on conventional benchmarks and shows promising results for practical applications
TEPPATI, LOSE' LORENZO. "Geomatics support to the metric documentation of the archaeological heritage. Tests and validations on the use of low-cost, rapid, image-based sensors and systems". Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2735515.
Texto completoDanijela, Karaklić. "Prostori sa fazi rastojanjem i primena u obradi slike". Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110710&source=NDLTD&language=en.
Texto completoMeasuring the image quality using a given image quality index does not necessarily reflect the practical quality of the image, that is, it is not based on the HVS (Human Visual System) model. The formation of given functions, which are used in the filtering algorithm for determining the distance between the pixels, can be done in different ways, which can be seen in works in the field of image filtering, provides a wide range of possibilities to examine the effect of fuzzy distance, for example, of the fuzzy T-metric or the fuzzy S-metric can have on the image filtering process itself. The goal is to improve image quality in relation to a vector median filter. Within the theoretical considerations of space with fuzzy distance, results from the fixed point theory have been obtained which provide the possibility of further application of these spaces in the technique.
Abbas, Mujahid. "Soft Set Theory: Generalizations, Fixed Point Theorems, and Applications". Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/48470.
Texto completoAbbas, M. (2014). Soft Set Theory: Generalizations, Fixed Point Theorems, and Applications [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/48470
TESIS
Carré, Maxime. "Interprétation d'images acquises en situation de faible éclairement ou d'éclairement variable". Thesis, Saint-Etienne, 2013. http://www.theses.fr/2013STET4012.
Texto completoThe quality of image acquisitions is crucial in the resolution of imaging problems. Troubles during acquisiton can lead to unstability for image processing algorithms. We propose different methods (thresholding techniques, contour detection, pattern matching) based on new metrics and contrasts in the LIP context. The LIP (Logarithmic Image Processing) model is recognized as an efficient framework to process images acquired in transmitted light and to take into account the human visual system. LIP operations are also useful to simulate varitations of image parameters in situation of reflected light. Finally, we propose new methods of global and local dynamic enhancement in the LIP framework like a real time and realistic local dynamic correction that brings results close to those obtained by certain tone mapping methods
Qu, Zheng. "Théorie de Perron-Frobenius non linéaire et méthodes numériques max-plus pour la résolution d'équations d'Hamilton-Jacobi". Phd thesis, Ecole Polytechnique X, 2013. http://pastel.archives-ouvertes.fr/pastel-00927122.
Texto completoVallvé, Navarro Joan. "Information metrics for localization and mapping". Doctoral thesis, TDX (Tesis Doctorals en Xarxa), 2019. http://hdl.handle.net/10803/668937.
Texto completoDècades de recerca han fet possible l’existència de nombrosos sistemes autònoms que naveguen eficaçment i eficient per varietat d’entorns sota certes condicions. Una de les principals tecnologies que ho han fet possible és la localització i mapeig simultanis (SLAM), el procés de crear una representació de l’entorn mentre es localitza el robot en aquesta. De tota manera, els algoritmes d’SLAM de l’estat de l’art encara basen moltes decisions en heurístiques i opcions a escollir per l’usuari final. Aquesta tesi persegueix solucions fonamentades per a varietat d’aspectes del problema de localització i mappeig amb l’ajuda de mesures d’informació. Un d’aquests aspectes és l’escalabilitat. En SLAM, el problema creix indefinidament a mesura que l’experiment avança fent créixer la demanda de recursos computacionals. Per mantenir el problema tractable, desenvolupem mètodes per construir una aproximació de la xarxa de restriccions original del problema d’SLAM, reduint així el seu tamany a l’hora que es manté la seva naturalesa dispersa. En aquesta tesi, proposem tres métodes per confeccionar la topologia de l’approximació i dos mètodes per calcular l’aproximació pròpiament. A més, l’SLAM és una aplicació passiva. És a dir que no dirigeix el robot. El problema de guiar el robot amb els objectius de localitzar el robot i mapejar l’entorn amb precisió es diu SLAM actiu. En aquest problema, dues forces normalment oposades guien el robot, una cap a llocs nous descobrint regions desconegudes i l’altra a revisitar prèvies configuracions per millorar la localització. En contraposició amb mètodes heurístics, en aquesta tesi plantegem el problema com una minimització de l’incertesa tant en el mapa com en l’estimació de la trajectòria feta i presentem quatre mètodes d’SLAM actiu basats en la reducció de l’entropia. Tots els mètodes presentats en aquesta tesi han estat rigurosament validats tant en sèries de dades sintètiques com en reals.
Polzin, Thomas [Verfasser]. "Large deformation diffeomorphic metric mappings : theory, numerics, and applications / Thomas Polzin". Lübeck : Zentrale Hochschulbibliothek Lübeck, 2018. http://d-nb.info/1168860741/34.
Texto completoNiyitegeka, Jean Marie Vianney. "Generalizations of some fixed point theorems in banach and metric spaces". Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/5265.
Texto completoQu, Zheng. "Nonlinear Perron-Frobenius theory and max-plus numerical methods for Hamilton-Jacobi equations". Palaiseau, Ecole polytechnique, 2013. http://pastel.archives-ouvertes.fr/docs/00/92/71/22/PDF/thesis.pdf.
Texto completoDynamic programming is one of the main approaches to solve optimal control problems. It reduces the latter problems to Hamilton-Jacobi partial differential equations (PDE). Several techniques have been proposed in the literature to solve these PDE. We mention, for example, finite difference schemes, the so-called discrete dynamic programming method or semi-Lagrangian method, or the antidiffusive schemes. All these methods are grid-based, i. E. , they require a discretization of the state space, and thus suffer from the so-called curse of dimensionality. The present thesis focuses on max-plus numerical solutions and convergence analysis for medium to high dimensional deterministic optimal control problems. We develop here max-plus based numerical algorithms for which we establish theoretical complexity estimates. The proof of these estimates is based on results of nonlinear Perron-Frobenius theory. In particular, we study the contraction properties of monotone or non-expansive nonlinear operators, with respect to several classical metrics on cones (Thompson's metric, Hilbert's projective metric), and obtain nonlinear or non-commutative generalizations of the "ergodicity coefficients" arising in the theory of Markov chains. These results have applications in consensus theory and also to the generalized Riccati equations arising in stochastic optimal control
Chia, Vin San. "New metrics for assessing high-quality researchers". Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/205722/1/Vin_Chia_Thesis.pdf.
Texto completoXu, Binbin. "L'identité de Pleijel hyperbolique, la métrique de pression et l'extension centrale du groupe modulaire via quantification de Chekhov-Fock". Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENM068/document.
Texto completoThis thesis consists of three parts corresponding to the three subjects that I have studied during the last three years.The first part contains the study of the chord length distribution associated to a compact (or non-compact) domain in the hyperbolic plane. We prove the hyperbolic Pleijel identity. By using this identity, we find new approaches to the Crofton's formula and the isoperimetric inequality, and then compute the chord length distribution associated to an ideal triangle and that associated to an ideal quadrilateral. Then we prove the analogue results for the simply connected Riemannian surface with constant curvature.The second part of this thesis (Chapter 5) consists of the study of the pressuremetric on the Teichmüller space of one-holed torus. By studying the degeneration of the torus when the boundary length goes to infinity, we find the relation of this metric to the pressure metric on the moduli space of metric graphs. Then we study the entropy function and prove that it is not constant on the symplectic leaf of the Teichmüller space of a bordered surface.Finally, the third part concerns the quantization of the Teichmüller space of a punctured surface. In this chapter, we study the central extension of the mapping class group coming from the quantization and compute its cohomology class which is 12 times the Meyer class plus the Euler classes associated to punctures
Konda, Bhargava Mithra y Kranthi Kiran Mandava. "A Systematic Mapping Study on Software Reuse". Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4305.
Texto completoAndersen, Hans-Erik. "Estimation of critical forest structure metrics through the spatial analysis of airborne laser scanner data /". Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5579.
Texto completoKaravai, Olga. "Mapping local corrosion parameters using SVET and SIET". Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22052.
Texto completoLocalized corrosion, i.e., corrosion confined to local regions, is difficult to predict and control. In general, it appears as a result of heterogeneities, either in the metal or in the corrosive environment. One of the phenomenological features of localised corrosion is the development of specific environments close to active sites. In practice, the micro-environment near the metallic surface is different from that of the bulk medium and varies with time and conditions of the system under study. Localized electrochemical techniques based on the use of microelectrodes are well suited for in situ sensing the distribution of potential, current and chemical species in active zones, pores or defects. Most of the published work dealing with microelectrodes in corrosion is mainly exploratory and their use in a regular basis is still rare in corrosion research. This work presents the development and application of microelectrodes as experimental tools capable to assess local electrochemical reactions on metallic substrates immersed in aggressive solutions. Traditional electrochemical techniques used in corrosion research give the average response of the global activity of the whole surface not discriminating local effects and local chemistry. Therefore they are unable per si to properly characterize localized phenomena and the corresponding corrosion, inhibitive mechanisms and, sometimes, even to select the best protection methods. It is important to know local parameters such as pH, micro-galvanic effects, concentration of oxidizing (like O2) and aggressive (like Cl-) species, and formation of surface films. The Scanning Vibrating Electrode Technique (SVET) was used for local measurements of ionic currents in solution. The technique detects the potential distribution in solution associated to ionic currents in solution. For the analysis of the chemical species involved in the corrosion process, electrochemical microsensors were used in SIET (Scanning Ion Selective Electrode Technique) mode. Microelectrodes sensitive to pH, dissolved oxygen and metal cations (namely, Mg2+, Zn2+ and Cu2+) were developed and characterized. Work was also done with microeloectrodes sensitive to Al3+, but with less success. Then, they were used for investigating the reactivity on defects and corrosion inhibition on coated aluminium and magnesium alloys, detecting the micro-distribution of chemical species in solution close to the corroding surface of Zn, Cu and a Zn- Fe galvanic couple specimens. ix Limitations and difficulties exist for the use of these techniques in corrosion research due to the inherent reactivity of corroding metals, with the formation of corrosion products and sharp changes of pH, O2 and ionic strength along the samples surface. In spite of the difficulties, the results presented here demonstrate that the SVET/SIET mapping gives useful information for the quantification of electrochemical processes at the micro-level. The data are of prime importance for the modelling and simulation of corrosion mechanisms, selection of new corrosion inhibitors and development of ‘‘smart” coatings that suppress the corrosion processes.
A corrosão localizada, i.e., corrosão confinada a locais específicos, é difícil de prever e controlar. Em geral, ocorre como resultado de heterogeneidades tanto no metal como no ambiente corrosivo. Uma das características da corrosão localizada é o desenvolvimento de ambientes específicos junto das zonas activas. Na prática, o micro-ambiente junto da superfície metálica é diferente do do seio da solução, variando com o tempo e com as condições do sistema em estudo. Técnicas electroquímicas localizadas baseadas na utilização de microeléctrodos são convientes para medir a distribuição de potencial, intensidade de corrente e espécies químicas em solução junto de zonas activas, poros ou defeitos. Muito do trabalho que existe publicado sobre microeléctrodos em corrosão refere-se a trabalho exploratório que permanece numa etapa preliminar. A aplicação de microeléctrodos em estudo de corrosão numa base rotineira é ainda rara. Este trabalho apresenta o desenvolvimento e aplicação de microeléctrodos como ferramentas experimentais capazes de aceder a reacções electroquímicas locais em substratos metálicos imersos em soluções agressivas. As técnicas electroquímicas tradicionais usadas no estudo de corrosão dão resposta média do processo global em toda a superfície da amostra sem distinguir efeitos locais e a química local. Não são, portanto, adequadas para a descrição detalhada dos mecanismos de corrosão localizada, de processos de inibição e, por vezes, para a selecção dos métodos de protecção mais adequados. É importante conhecer parâmetros locais, como pH, efeitos micro-galvânicos, concentração de espécies oxidantes (como O2) e agressivas (como Cl-), formação de filmes superficiais. Neste trabalho usou-se a técnica do eléctrodo vibrante de varrimento (SVET) para medições locais de corrente iónica em solução. A técnica detecta a distribuição de potencial em solução, associada à corrente iónica. Para a análise de espécies químicas envolvidas no processo corrosivo, foram usados microsensores electroquímicos no modo SIET (Técnica de Varrimento de Eléctrodo Selectivo de Iões). vii Foram desenvolvidos e caracterizados microeléctrodos sensíveis a pH, oxigénio dissolvido e catiões metálicos (nomeadamente, Mg2+, Zn2+ e Cu2+). Trabalhou-se também no desenvolvimento de microeléctrodos sensíveis a Al3+, embora com menos sucesso. Os microeléctrodos foram utilizados na investigação da corrosão e inibição em defeitos induzidos em revestimentos protectores aplicados sobre ligas de alumínio e de magnésio, e na detecção da micro-distribuição de espécies químicas em solução perto de eléctrodos de zinco, cobre e de um par galvânico Zn-Fe. Este trabalho revela também as limitações e dificuldades na aplicação destas técnicas ao estudo de corrosão devido à inerente reactividade do processo corrosivo, com formação de produtos de corrosão e grandes variações de pH, O2 e força iónica ao longo da superfície de amostra. Apesar das dificuldades, os resultados aqui apresentados demonstram que o mapeamento por SVET/SIET fornece informações muito úteis para a quantificação de processos electroquímicos à micro-escala. Os dados são de primordial importância para a modelação e simulação de mecanismos de corrosão, selecção de novos inibidores de corrosão e desenvolvimento de revestimentos anticorrosivos “inteligentes”.
Yi, Siqi. "Multi-sensor Geo-localisation for Urban Autonomous Driving". Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/28003.
Texto completoStofile, Simfumene. "Fixed points of single-valued and multi-valued mappings with applications". Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1002960.
Texto completoFeyh, Markus. "Lean software development measures : A systematic mapping". Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5537.
Texto completoMedwid, Mark Edward. "Rigidity of Quasiconformal Maps on Carnot Groups". Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1497620176117104.
Texto completoGrift, Jeroen. "Forest Change Mapping in Southwestern Madagascar using Landsat-5 TM Imagery, 1990 –2010". Thesis, Högskolan i Gävle, Samhällsbyggnad, GIS, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22606.
Texto completoBressan, João Paulo 1983. "Aplicações harmonicas, holomorfas e metricas(1,2)-simpleticas em variedades bandeira". [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306776.
Texto completoDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica
Made available in DSpace on 2018-08-08T09:41:20Z (GMT). No. of bitstreams: 1 Bressan_JoaoPaulo_M.pdf: 1270495 bytes, checksum: 690edfeed4929635ff181ad3063aaadb (MD5) Previous issue date: 2007
Resumo: O objetivo deste trabalho é estudar a relação existente entre holomorfia e harmonicidade de aplicações f : M 2 (IF; J; ds2? ), onde M 2 é uma superfície de Riemann compacta, orientável e IF é a variedade bandeira maximal. Para isto, apresentamos parte da teoria geral de aplicações harmônicas e holomorfas, necessária para demonstrar o teorema de Lichnerowicz. Uma de suas conseqüências é uma ferramenta importante neste estudo, pois fornece o seguinte critério: se f é J-holomorfa e ds2? é (1,2)-simplética, então f é harmônica. Portanto, também estamos interessados em descrever as métricas (1,2)-simpléticas nas variedades bandeira. Primeiramente, no caso geométrico, estudamos a variedade bandeira complexa maximal de subespaços encaixados IF(n). Posteriormente, este estudo é generalizado para outras variedades bandeiras maximais IF, definidas através de álgebras de Lie semi-simples complexas. Ainda, demonstramos o teorema de Burstall-Salamon, que fornece propriedades da estrutura quase complexa invariante J através de um torneio ?J associado. Finalmente, exibimos as equações de Cauchy-Riemann e de Euler-Lagrange para estas aplicações, e apresentamos exemplos de famílias de funções equi-harmônicas
Abstract: The goal of this work is to study the relationship bettwen holomorphicity and harmonicity of maps f: M 2 (IF; J; ds2? ), where M 2 is a compact, orientable Riemann surface and IF is the full-flag manifold. With this pourpose, we present part of the general holomorphic/harmonic maps theory, which is necessary to prove the Lichnerowicz theorem.It states like consequence a criterion, which is an important tool in this study: if f is J-holomorphic and ds2? é (1,2)-symplectic, then f is harmonic. Therefore, we are interested in to describe (1,2)-symplectc metrics on the flag manifold.Firstly, in the geometrical case, we study the complex full-flag manifold IF(n). Later, we generalize this study to other full-flag manifolds IF, which is defined through complex semisimple Lie algebras. Also, we prove the Burstall-Salamon theorem, which gives some properties of the almost complex structure J through an associated tournament ?J. Finally, we show-up the Cauchy-Riemann equations and the Euler-Lagrange equations to this maps, and present examples of families of equi-harmonic maps
Mestrado
Mestre em Matemática
Skinner, John R. "Simulation for robot vision". Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/227404/1/John_Skinner_Thesis.pdf.
Texto completoSilva, David Faria da. "Micronutrientes e metais pesados em fosfogesso – acúmulo, mobilidade e fator de transferência em latossolos de cerrado". Universidade Federal de Viçosa, 2009. http://locus.ufv.br/handle/123456789/5441.
Texto completoThe calcium sulphate dihydrate (CaSO4.2H2O), phosphogypsum, also known as agricultural gypsum, is one of the major residues generated in the production of phosphate fertilizers by means of solubilization process of phosphate rock with sulfuric acid. The generation rate is approximately 4.8 t for each ton of phosphoric acid produced, and its main disposal form is the stacking in nearby the factories. However, this type of final disposal can lead to environmental impacts, such as leaching and superficial outflow of toxic elements, such as F- and heavy metals, resulting in contamination of water resources and releasing of aerosols caused by wind erosion in the stacks. One way to minimize such impacts is by recycling this residue would be its use in agriculture. The use of phosphogypsum as a soil conditioner in subsurface has been a viable alternative for the utilization of this residue in agriculture. However, it is necessary to consider the content o some heavy metals as well other toxic elements in this material, which may limit its use. It is important to highlight that the gypsum is classified as Class IIA, that is, it is neither hazardous nor inert, since it presents levels of arsenic, fluoride, aluminum, iron, manganese and sulfates above the maximum limit allowed in solubilization tests according to the ‘Associação Brasileira de Normas Técnicas’ - ABNT. The objective of this work was to evaluate the use of phosphogypsum, from a company which produces phosphoric acid, as well as to evaluate the contamination of plants, soils and drained water. Phosphogypsum samples were collected from an active stack regularly used for direct application in soil. Samples of the 30 collection points were dried in oven at 60 ºC. Afterwards the samples were sieved in 0,250 mm (sieve 60 mesh), and then analyzed. Cultivation of corn and soybeans was performed in pots of 25 dm3 containing soil treated with increasing doses of the conditioner applied to the superficial layer (0-18 cm depth). The samples of soils utilized were of Red-Yellow oxysoil and Yellow Oxisoil, originated from the towns of Sete Lagoas and Três Marias, both in the ‘Cerrado’ region of Minas Gerais. The leaching solutions of the pots of corn and soybeans were periodically collected and analyzed for the determination of heavy metals. With these results it can be concluded that there was no significant contamination of soils, plants and water drainage after the short term use of phosphogypsum. Nevertheless, it is recommended that further reapplication must be carefully evaluated, from an environmental standpoint, particularly in sandy soil with groundwater near the surface.
O sulfato de cálcio dihidratado (CaSO4.2H2O), fosfogesso, também denominado de gesso agrícola, é um dos principais resíduos gerados na produção de fertilizantes fosfatados por meio do processo de solubilização da rocha fosfática com ácido sulfúrico. A taxa de geração é de ,aproximadamente, 4,8 t para cada tonelada de ácido fosfórico produzido, sendo sua principal forma de descarte o empilhamento em áreas ao redor das fábricas. No entanto, esse tipo de disposição final pode gerar impactos ao meio ambiente, como por exemplo, a lixiviação e escoamento superficial de elementos tóxicos, como F־ e metais pesados, resultando na contaminação dos recusrsos hídricos e na liberação de aerossóis causados por erosão eólica nas pilhas. Uma das maneiras de minimizar tais impactos é a reciclagem deste resíduo, utilizando-o, por exemplo, na agricultura. Nesse sentido, o uso de fosfogesso como condicionador de solos tem se mostrado uma alternativa viável para o aproveitamento desse resíduo na agricultura. Entretanto, é necessário considerar os teores de alguns metais pesados e outros elementos tóxicos nesse material, que pode limitar o seu uso. É importante ressaltar que o gesso é classificado como resíduo sólido de classe IIA – não perigoso e não inerte, por apresentar teores de arsênio, fluoretos, alumínio, ferro, manganês e sulfatos acima do limite máximo permitido nos testes de solubilização, de acordo com a Associação Brasileira de Normas Técnicas – ABNT. Em vista do exposto, este trabalho teve como objetivo avaliar a utilização de fofosfogesso, proveniente de uma empresa de produção de ácido fosfórico, bem como avaliar a contaminação das plantas, dos solos e da água de drenagem. Foram coletadas amostras de fosfogesso de uma pilha ativa regularmente utilizada para aplicação direta na agricultura. Amostras dos 30 pontos de coleta foram secas em estufa a 60 ºC, peneiradas em malha de 0,250 mm (60 Mesh) e analisadas. Foram realizados cultivos com milho e soja em vasos de 25 dm3 contendo solos tratados com doses crescentes do condicionador aplicado na camada superficial (0-18 cm de profundidade). Foram utilizadas amostras de um Latossolo Vermelho-Amarelo e um Latossolo Amarelo, provenientes das cidades de Sete Lagoas e Três Marias, ambas regiões do Cerrado do Estado de Minas Gerais. As soluções lixiviadas dos vasos de milho e soja, foram coletadas periodicamente e analisadas para a determinação da concentração de metais pesados. A partir dos resultados obtidos pode-se concluir que não se verificou contaminação expressiva de solos, plantas e águas de drenagem, a curto prazo, em decorrência da utilização do fosfogesso. Não obstante, recomenda-se que as reaplicações devam ser criteriosamente avaliadas, do ponto de vista ambiental, principalmente em solos arenosos e com lençol freático muito próximo à superfície.
Dunn, Shanna K. "Analyzing Spatial Patterns in Reefscape Ecology Via Remote Sensing, Benthic Habitat Mapping, and Morphometrics". NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/234.
Texto completoSchwieder, Marcel. "Landsat derived land surface phenology metrics for the characterization of natural vegetation in the Brazilian savanna". Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19368.
Texto completoThe Brazilian savanna, known as the Cerrado, covers around 24% of Brazil. It is characterized by a unique biodiversity and a strong gradient in vegetation structure. Land-use changes have led to almost half of the Cerrado being converted into cultivated land. The mapping of ecological processes is, therefore, an important prerequisite for supporting nature conservation policies based on spatially explicit information and for deepening our understanding of ecosystem dynamics. New sensors, freely available data, and advances in data processing allow the analysis of large data sets and thus for the first time to capture seasonal vegetation dynamics over large extents with a high spatial detail. This thesis aimed to analyze the benefits of Landsat based land surface phenological (LSP) metrics, for the characterization of Cerrado vegetation, regarding its structural and phenological diversity, and to assess their relation to above ground carbon. The results revealed that LSP metrics enable to capture the seasonal dynamics of photosynthetically active vegetation and are beneficial for the mapping of vegetation physiognomies. However, the results also revealed limitations of hard classification approaches for mapping vegetation gradients in complex ecosystems. Based on similarities in LSP metrics, which were for the first time derived for the whole extent of the Cerrado, LSP archetypes were proposed, which revealed the spatial patterns of LSP diversity at a 30 m spatial resolution and offer potential to enhance current mapping concepts. Further, LSP metrics facilitated the spatially explicit quantification of AGC in three study areas in the central Cerrado and should thus be considered as a valuable variable for future carbon estimations. Overall, the insights highlight that Landsat based LSP metrics are beneficial for ecosystem monitoring approaches, which are crucial to design sustainable land management strategies that maintain key ecosystem functions and services.
Rizzo, July Any Martinez de. "Avaliação de padrões para implementação de modelos de dados orientados a objetos em bancos de dados relacionais". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-19012011-141321/.
Texto completoImplementation of object-oriented data models constitutes in a not fully consolidated subject yet. Thus, this work performs an evaluation about a relational database implementation represented by a class diagram. The main focus of this paper is to present a systematic metric evaluation for the mapping of three relationships types of an object-oriented model, Inheritance, Aggregation / Composition and Association, when applied to a relational database model. For this purpose, seven mapping patterns that transform these relationships into a relational model notation were evaluated, two patterns of Inheritance, two of Aggregation, and two of Association, besides the analysis of empirical studies related to the topic. Both forms of modeling, relational and object-oriented, are considered compatible when their conceptual modeling is analyzed. So this paper evaluates the adequation of the object-oriented models implementation in a relational database after the appliance of the mapping standards. As a result of this work, it is presented an analysis of metrics proposal from the mapping patterns application in a suitable model for implementation in a relational database. Some of the evaluated metrics are denormalization, logical storage method aligned to indexing strategy, high availability and use of replication methods, cost of access to data, disk space and flexibility and maintenance costs.
Matheis, Sebastian. "Preparation of a Class A certification in the field of pharmaceutical packaging through mapping and optimization of business processes and implementation of the Oliver Wight Class A Behaviors for Business Excellence". Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227771.
Texto completoForslund, Emil. "Code Generation in Java : A modular approach for better cohesion". Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-11003.
Texto completoSchetter, Timothy Andrew. "A Multiscale Spatial Analysis of Oak Openings Plant Diversity with Implications for Conservation and Management". Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1334089503.
Texto completoHuang, Hao-Hsiung. "Digital orthophoto mapping using non-metric cameras". 1986. http://catalog.hathitrust.org/api/volumes/oclc/15219501.html.
Texto completoTypescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 122-128).
Kouzoubov, Kirill. "Hybrid topological-metric simultaneous localisation and mapping". Phd thesis, 2008. http://hdl.handle.net/1885/150083.
Texto completoRichards, Whitman y Jan J. Koenderink. "Trajectory Mapping ("TM''): A New Non-Metric Scaling Technique". 1993. http://hdl.handle.net/1721.1/6693.
Texto completo徐泳欽. "A Large Deformation Diffecmorphic Metric Mapping Solution for Diffusion Spectrum Imaging Datasets". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/57155472651017957574.
Texto completoWang, Feng-Liang y 王豐良. "A Study of Vehicle-Based Mobile Mapping System Using GPS and Non-Metric Camera". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/78622338471443009138.
Texto completo國防大學中正理工學院
軍事工程研究所
96
With the development of surveying and mapping technology, realtime moving platforms of surveying and geospatial information collection, referred to as Mobile Mapping System (MMS), were built. In the researches about MMS at present, acquisition of position and orientation of system use the way that Inertial Navigation System (INS) combined with GPS, acquisition of the distance and image use CCD cameras or 3D scanner. Because cost of high-accuracy INS and 3D scanner are expensive, so the construction of MMS is with high costs, and if adopt low cost of INS, it can't meet the precision demand that the system measure. This research develop the MMS that combines three GPS receivers and two digital cameras. The system is used to set up Image Matching in order to reduce the spending of manpower and cost for acquisition of geospatial information. In this studying, observations from three GPS receivers at the same time. Were used to calculate the precision of position the result is 44cm when using DGPS, another using OTF is 1.2cm and using of coordinates to calculate the rotatory angle of three axles up to 0.6∘. The proportionate relationships of the distance between the objects and interval of cameras influence the precision of measurement, in a case that the interval of cameras is 1m, the distance between the objects is 20m and 30m with the precision difference between 20cm and 70cm. In simulation moving tested, that deleted the points of distance between the objects is greater than 30m after, the plane precision reaches 15cm, height precision reaches 60cm, precision obviously superior to MMS that combine GPS and low precision INS. In the road area move tested, the camera shooting time and GPS receiving time that difference is about 0.2 seconds, make position measurement error nearly 2m, and improve measurement precision of MMS, with the technology and method of time moving ahead simultaneously. MMS can be used in collection of GIS data, for instance, road inventory, natural resources inventory, cadastral survey, measurement after the natural calamity, etc. More traditional measurement method, more accurate, more economic, have easier renewing data.
Bu, Jian-Jhong y 卜建中. "Some new existence theorems and convergence theorems for nonlinear cyclic mapping in metric spaces". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/07430471751675345939.
Texto completo國立高雄師範大學
數學系
105
Let A and B be nonempty subsets of a metric space (X,d) and T:A∪B → A∪B be a cyclic mapping. In this paper, we establish some new convergence theorems satisfying (J) there exists an MT-function ϕ:[0,∞)→[0,1) such that d(Tx,Ty) ≤(1/5)ϕ(d(x,y))max{d(x,y)+2d(y,Tx),2d(x,Tx)+d(y,Ty), d(x,Ty)+d(x,Tx)+d(y,Tx)}+(1-ϕ(d(x,y)))dist(A,B) for all x∈A and y∈B.
Wang, Li-Chuan y 王莉琄. "A Numerical Study On Large Deformation Diffeomorphic Metric Mapping With Application On Brain Image Registration". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/92472835935403425056.
Texto completo國立交通大學
應用數學系所
102
Image registration in medical images analysis is to find a corresponding map via landmar- ks, p and q which is prescribed in two given images, respectively. LDDMM is one of the most commonly used methods for non-rigid medical image registration. Computation of LDDMM is an optimization problem. It is important to find a suitable initial for LDDM- M computation. The goal of this thesis is to find the suitable initial. In this thesis, the initial of computing LDDMM is obtained from the thin-plate spline and möbius transformation, instead of original initial path constructed by Marsland and Twining. We use following steps to construct the initial. First, we find p ̂ by applying möbius transformation on p in order to perform the affine registration. Next, we use thin-plate spline method to find a lin- ear path from p ̂ to q. Finally, a diffeomorphic map is constructed by LDDMM based on geodesic spline interpolation. The proceess of computing the initial is also demonstrated. To examine the initial path, the deformation fields obtained by computing the LDDMM with different initial are listed for comparison. At the end of the thesis, we apply the LDD- MM on brain image registration.
Зубко, Микола Валерійович. "Застосування принципу стискуючих відображень до розв’язання рівнянь та їх систем". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/3361.
Texto completoUA : Робота викладена на 59 сторінках друкованого тексту, містить 25 рисунків, 13 джерел. Об’єкт дослідження: принцип стискуючих відображень. Предмет дослідження: розв’язання рівнянь та систем рівнянь за допомогою принципу стискуючих відображень. Мета роботи: встановити максимально зручні умови стискання різноманітних класів відображень, які дозволяють обгрунтовати застосування методу послідовних наближень до пошуку наближеного розв’язку. Метод дослідження: аналітичний. Кваліфікаційна робота присвячена застосуванню принципу стискуючих відображень до розв’язання алгебраїчних, інтегральних рівнянь та систем лінійних та нелінійних рівнянь. Наближені чисельні обчислення виконувалися за допомогою програми Python версії 3.9.0. Результати роботи можуть біти застосовані при вивченні курсу функціонального аналізу, лінійної алгебри, диференціальних та інтегральних рівнянь, а також на факультативах з математики у старших класах загальноосвітніх шкіл.
EN : The work is presented on 59 pages of printed text, 25 figures, 13 references. The object of the study is the principle of compressive mappings. The aim of the study is establishing the most convenient conditions for compression of various classes of mappings, which allow to justify the application of the method of successive approximations to the search for an approximate solution. The methods of research is analytical. The qualification work is devoted to the application of the principle of compressive mappings to the solution of algebraic, integral equations and systems of linear and nonlinear equations. Approximate numerical calculations were performed using Python version 3.9.0. The results of the work can be used in the study of the course of functional analysis, linear algebra, differential and integral equations, as well as in electives in mathematics in senior classes of secondary schools.
RAFFERO, ALBERTO. "Non-integrable special geometric structures in dimensions six and seven". Doctoral thesis, 2016. http://hdl.handle.net/2318/1557510.
Texto completoChang, Chin Hsing y 張進興. "The Baire's Theorem and Contraction Mappings in Probabilistic Metric Spaces". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/91639169260245905243.
Texto completoLins, Brian C. "Asymptotic behavior and Denjoy-Wolff theorems for Hilbert metric nonexpansive maps". 2007. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.16723.
Texto completoLIN, YI-CHI y 林奕錡. "Some new convergence theorems for new nonlinear mappings on metric spaces". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/mwtq98.
Texto completo國立高雄師範大學
數學系
105
Let A and B be nonempty subsets of a metric space (X; d) and T : A [ B ! A [ B be a cyclic mapping. In this paper, we study the following condition: (L) there exists an MT -funtion ' such that d(Tx,Ty)≤φ(d(x,y))max((4d(x₁,x₂)+3d(x₂,x₃))/7),((4d(x₂,x₃)+ 3d(x₁,x₂))/7) +(1-φ(d(x,y)))dist(A,B) 對於所以 x∈A 且 y∈B and establish some convergence theorems related to the best proximity points satisfying condition (L):
LIU, YUAN-LIANG y 劉原良. "Some new convergence theorems for generalized nonlinear cyclic mappings in metric spaces". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/19917770447190661454.
Texto completo國立高雄師範大學
數學系
105
Let A and B be nonempty subsets of a metric space (X,d) and T:A∪B → A∪B be a cyclic mapping. In this paper, we establish some new convergence theorems satisfying the following condition: (G) there exists an MT-funtion ϕ:[0,∞) → [0,1) such that d(Tx,Ty)≤ϕ(d(x,y))max{(1/4)[d(x,Ty)+2d(Tx,Ty)+d(y,Tx)], (1/8)[d(x,Ty)+3d(x,Tx)+3d(y,Ty)+d(y,Tx)]}+[1-ϕ(d(x,y))]dist(A,B) for all x∈A and y∈B.