Дисертації з теми "Local and global matching"
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1
Brazier, Richard Anthony 1967. "Seismic wave propagation stitching: Matching local and global techniques." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282549.
Анотація:
Multiple methods exist for modeling with synthetic seismograms, each with its own characteristic application; local and detailed; global and asymptotic; body and/or surface waves. Events such as the nuclear tests in the Tarim Basin in China, recorded at regional distances require more than one such characteristic. A successful model would need detail close in and a global result. The ability to join two methods can therefore be very powerful. Within this text the exploration is of finite difference and discrete wavenumber integration methods. The basis of the conversion between methods is the idea in Huygen's principle of representing a wave front as multiple sources, then propagated as an alternate method. Modeling detail locally, finite difference eventually becomes computationally intensive or undetailed. Representation theory replaces finite difference with discrete wavenumber integration propagating to the receiver at a regional distance. The requirement for multiple sources means that efficiency and optimization of methods are paramount.
2
Günther, Thomas [Verfasser], and Peter [Akademischer Betreuer] Boschan. "Matching of local and global geometry in our universe / Thomas Günther ; Betreuer: Peter Boschan." Münster : Universitäts- und Landesbibliothek Münster, 2013. http://d-nb.info/1141383489/34.
3
Cremer, Sandra. "Adapting iris feature extraction and matching to the local and global quality of iris image." Thesis, Evry, Institut national des télécommunications, 2012. http://www.theses.fr/2012TELE0026.
Анотація:
La reconnaissance d'iris est un des systèmes biométriques les plus fiables et les plus précis. Cependant sa robustesse aux dégradations des images d'entrées est limitée. Généralement les systèmes basés sur l'iris peuvent être décomposés en quatre étapes : segmentation, normalisation, extraction de caractéristiques et comparaison. Des dégradations de la qualité des images d'entrées peuvent avoir des répercussions sur chacune de ses étapes. Elles compliquent notamment la segmentation, ce qui peut engendrer des images normalisées contenant des distorsions ou des artefacts non détectés. De plus, la quantité d'information disponible pour la comparaison peut être réduite. Dans cette thèse, nous proposons des solutions pour améliorer la robustesse des étapes d'extraction de caractéristiques et de comparaison à la dégradation des images d'entrées. Nous travaillons avec deux algorithmes pour ces deux étapes, basés sur les convolutions avec des filtres de Gabor 2D, mais des processus de comparaison différents. L'objectif de la première partie de notre travail est de contrôler la qualité et la quantité d'information sélectionnée pour la comparaison dans les images d'iris normalisées. Dans ce but nous avons défini des mesures de qualité locale et globale qui mesurent la quantité d'occlusions et la richesse de la texture dans les images d'iris. Nous utilisons ces mesures pour déterminer la position et le nombre de régions à exploiter pour l'extraction. Dans une seconde partie de ce travail, nous étudions le lien entre la qualité des images et les performances de reconnaissance des deux algorithmes de reconnaissance décrits ci-dessus. Nous montrons que le second est plus robuste aux images dégradées contenant des artefacts, des distorsions ou une texture pauvre. Enfin, nous proposons un système complet pour la reconnaissance d'iris, qui combine l'utilisation de nos mesures de qualités locale et globale pour optimiser les performances des algorithmes d'extraction de caractéristiques et de comparaisonIris recognition has become one of the most reliable and accurate biometric systems available. However its robustness to degradations of the input images is limited. Generally iris based systems can be cut into four steps : segmentation, normalization, feature extraction and matching. Degradations of the input image quality can have repercussions on all of these steps. For instance, they make the segmentation more difficult which can result in normalized iris images that contain distortion or undetected artefacts. Moreover the amount of information available for matching can be reduced. In this thesis we propose methods to improve the robustness of the feature extraction and matching steps to degraded input images. We work with two algorithms for these two steps. They are both based on convolution with 2D Gabor filters but use different techniques for matching. The first part of our work is aimed at controlling the quality and quantity of information selected in the normalized iris images for matching. To this end we defined local and global quality metrics that measure the amount of occlusion and the richness of texture in iris images. We use these measures to determine the position and the number of regions to exploit for feature extraction and matching. In the second part, we study the link between image quality and the performance of the two recognition algoritms just described. We show that the second one is more robust to degraded images that contain artefacts, distortion or a poor iris texture. Finally, we propose a complete system for iris recognition that combines the use of our local and global quality metrics to optimize recognition performance
4
Sivri, Erdal. "Shape Descriptors Based On Intersection Consistency And Global Binary Patterns." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614780/index.pdf.
Анотація:
Shape description is an important problem in computer vision because most vision tasks that require comparing or matching visual entities rely on shape descriptors. In this thesis, two novel shape descriptors are proposed, namely Intersection Consistency Histogram (ICH) and Global Binary Patterns (GBP). The former is based on a local regularity measure called Intersection Consistency (IC), which determines whether edge pixels in an image patch point towards the center or not. The second method, called Global Binary Patterns, represents the shape in binary along horizontal, vertical, diagonal or principal directions. These two methods are extensively analyzed on several databases, and retrieval and running time performances are presented. Moreover, these methods are compared with methods such as Shape Context, Histograms of Oriented Gradients, Local Binary Patterns and Fourier Descriptors. We report that our descriptors perform comparable to these methods.
5
Mäkinen, Veli. "Parameterized approximate string matching and local-similarity-based point-pattern matching." Helsinki : University of Helsinki, 2003. http://ethesis.helsinki.fi/julkaisut/mat/tieto/vk/makinen/.
6
Tito, Maria Domenica. "Worker-firm matching in a global economy." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54172.
Анотація:
This thesis investigates the impact of international trade on the sorting patterns of workers across firms and analyzes the implications for welfare.
The first essay builds a model of matching between heterogeneous workers and firms in presence of search frictions. Variation in the worker type at the firm level exists in equilibrium only because of search costs. When firms gain access to foreign markets their revenue potential increases. When stakes are high, matching with the right worker becomes particularly important because deviations from the ideal match quickly reduce the value of the relationship. Hence exporting firms select sets of workers that are less dispersed relative to the average.
The second essay documents the difference in the sorting patterns of workers between exporters and non-exporters in a French matched employer-employee dataset. We proxy the type of each worker using her average wage over her job spells and construct measures of the average type and type dispersion at the firm level. We find that exporting firms tolerate a lower dispersion in the pool of workers they hire. The matching between exporting firms and workers is even tighter in sectors characterized by better exporting opportunities as measured by foreign demand or tariffs. We also confirm the conjecture in the literature that exporters pay higher wages because, among other factors, they employ better workers.
The final chapter explores the implications for wage inequality using the French Employer-Employee Data. We find that the differences in sorting in large part account for the existing differences in the wage structure between exporters and non-exporters. Exporting firms tend to have higher wages but tolerate a lower dispersion. Using an alternative theory-based measure of residual wage inequality, we also find that the unexplained component tends to be smaller in exporting and more productive firms, even when controlling for some differences in workforce composition. This finding suggests that exporters are better able to overcome frictions in the labour market in order to move closer to their ideal worker.Arts, Faculty of
Vancouver School of Economics
Graduate
7
Ntaryamira, Evariste. "Une méthode asynchrone généralisée préservant la qualité des données des systèmes temps réel embarqués : cas de l’autopilote PX4-RT." Thesis, Sorbonne université, 2021. https://tel.archives-ouvertes.fr/tel-03789654.
Анотація:
Les systèmes embarqués en temps réel, malgré leurs ressources limitées, évoluent très rapidement. Pour ces systèmes, il est impératif de garantir que les tâches ne manquent pas leurs échéances, mais aussi la bonne qualité des données transmises de tâche en tâche. Il est obligatoire de trouver des compromis entre les contraintes d'ordonnancement du système et celles appliquées aux données. Pour garantir ces propriétés, nous considérons le mécanisme sans attente. L'accès aux ressources partagées suit le principe d'un seul producteur, plusieurs lecteurs. Pour contenir toutes les particularités de communication apportées par le mécanisme de communication uORB, nous avons modélisé les interactions entre les tâches par un graphe biparti que nous avons appelé graphe de communication et qui est composé d'ensembles de messages dits de domaine. Pour améliorer la prévisibilité de la communication inter-tâches, nous étendons le modèle de Liu & Layland avec le paramètre état de communication utilisé pour contrôler les points d'écriture/lecture.Nous avons considéré deux types de contraintes de données : les contraintes locales de données et les contraintes globales de données. Pour vérifier les contraintes locales des données, nous nous appuyons sur le mécanisme de sous-échantillonnage destiné à vérifier les contraintes locales des données. En ce qui concerne les contraintes globales des données, nous avons introduit deux nouveaux mécanismes : le " dernier lecteur de marque" et le " mécanisme de défilement ou d'écrasement ". Ces 2 mécanismes sont en quelque sorte complémentaires. Le premier fonctionne au début du fuseau tandis que le second fonctionne à la fin du fuseauReal-time embedded systems, despite their limited resources, are evolving very quickly. For such systems, it is not enough to ensure that all jobs do not miss their deadlines, it is also mandatory to ensure the good quality of the data being transmitted from tasks to tasks. Speaking of the data quality constraints, they are expressed by the maintenance of a set of properties that a data sample must exhibit to be considered as relevant. It is mandatory to find trade-offs between the system scheduling constraints and those applied to the data. To ensure such properties, we consider the wait-free mechanism. The size of each communication buffer is based on the lifetime bound method. Access to the shared resources follows the single writer, many readers. To contain all the communication particularities brought by the uORB communication mechanism we modeled the interactions between the tasks by a bipartite graph that we called communication graph which is comprised of sets of so-called domain messages. To enhance the predictability of inter-task communication, we extend Liu and Layland model with the parameter communication state used to control writing/reading points.We considered two types of data constraints: data local constraints and data global constraints. To verify the data local constraints, we rely on the sub-sampling mechanism meant to verify data local constraints. Regarding the data global constraints, we introduced two new mechanism: the last reader tags mechanism and the scroll or overwrite mechanism. These 2 mechanisms are to some extent complementary. The first one works at the beginning of the spindle while the second one works at the end of the spindle
8
Bauman, Zygmunt. "Local Orders, Global Chaos." Universität Potsdam, 1999. http://opus.kobv.de/ubp/volltexte/2008/2378/.
9
Silva, Rogério Silvestre da. "From local to global." Florianópolis, SC, 2008. http://repositorio.ufsc.br/handle/123456789/103219.
Анотація:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-graduação em Letras/Inglês e Literatura CorrespondenteMade available in DSpace on 2013-07-16T03:37:49Z (GMT). No. of bitstreams: 1 252105.pdf: 288002 bytes, checksum: 7be0987660fe3fb5c34a5e8556c2a4d7 (MD5)
This study discusses the trajectory of Dionne Brand's poetry in its political engagement with the issues of diaspora, post-colonialism, the Multiculturalism Act in Canada, and struggles of visible minorities. The poet's political discourse is mainly analyzed in light of the intersections between race, class, gender and sexuality. The analysis shows that Brand explores a multitude of voices, that is, a polyphonic discourse in which the poet articulates her political views in order to represent the experience of otherness. Findings also show that Brand's poetic act of resistance expresses her hybrid language which subverts the dominant discourse. The poet also discusses her experience with racism, her vision about the notion of national identity, and her criticism against the media regarding the manipulation of violence and cultural destruction.
10
Hernandez, Rodrigo, and Andréas Andersson. "Global spirituality - local development." Thesis, Malmö högskola, Fakulteten för lärande och samhälle (LS), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-27836.
Анотація:
The purpose of this study was to examine the dynamics between spirituality and development. The point of departure for the study took place in Rishikesh and Dharamsala, in India. Our main object was to examine the role of the Divine Life Society (DLS), in Rishikesh and the Tibetan government in exile, in Dharamsala, in terms of local development. To achieve a solid platform regarding the theoretical framework, relevant studies were made in Hinduism and Buddhism. The study shows that there is a connection between religion and development. Nevertheless, this connection is not unequivocal, hence, in comparison, the results shows differences between the two objects studied. The conclusion of this study is that although there is a connection between spirituality and local development, spirituality in itself doesn’t mean development.
11
Alves, do Valle Junior Eduardo Philipp-Foliguet Sylvie. "Local-Descriptor Matching for Image Identification Systems." [s.l.] : [s.n.], 2009. http://biblioweb.u-cergy.fr/theses/08CERG0351.pdf.
Анотація:
Reproduction de : Thèse doctorat : Traitement de l'image et du signal : Université de Cergy-Pontoise : 2008.Matériel complémentaire disponible à l'adresse. Titre provenant de l'écran titre. Bibliogr. p. 167-177. Index.
12
Sipiran, Mendoza Iván Anselmo. "Local features for shape matching and retrieval." Tesis, Universidad de Chile, 2014. http://www.repositorio.uchile.cl/handle/2250/115564.
Анотація:
Los modelos tridimensionales son útiles para representar objetos reales en el mundo digital. Su uso se encuentra en muchas aplicaciones tales como medicina, ingeniería, seguridad y otros. Recientemente, la introducción de dispositivos de captura baratos ha incrementado el interés por este tipo de información, generando una gran cantidad de modelos disponibles en diferentes lugares. Por lo tanto, es imperativo proveer algorithmos efectivos y eficientes para procesar y analizar datos 3D.
La evaluación de similitud de modelos 3D es una tarea importante que puede ser útil para procesos de alto nivel tales como recuperación por contenido y reconocimiento. Estos procesos requieren atención ya que los repositorios 3D están en constante crecimiento y es cada vez más necesario realizar búsquedas basadas en contenido. Más aún, la comparación de modelos 3D es una tarea desafiante debido a la dificultad de representar adecuadamente un modelo 3D para una subsecuente comparación.
En esta tesis, abordamos el problema de matching y recuperación por contenido en modelos 3D. Nosotros proponemos nuevas representaciones para modelos 3D basándonos en la habilidad de detectar características locales robustas sobre mallas. De esta forma, este trabajo se enfoca primero en la detección efectiva y eficiente de puntos de interés en mallas 3D. Luego, nosotros proveemos representaciones efectivas para lidiar con problemas como recuperación genérica, recuperación de formas no rígidas y correspondencias entre mallas. Para la recuperación basada en contenido, nosotros desarrollamos representaciones basadas en grupos de puntos de interés. Estas representaciones permiten aprovechar el poder de representación de las características locales mientras reducimos la cantidad de información necesaria. Para computar correspondencias, desarrollamos una representación jerárquica la cual conlleva una descomposición recursiva de un modelo 3D en regiones y puntos de interés. Esta representación es útil para decrementar el error de localización de las correspondencias en formas no rígidas mientras se reduce considerablemente el tiempo de procesamiento.
Nuestros experimentos muestran que nuestros métodos para detectar estructuras locales en mallas son robustos a diferentes transformaciones. Además, nosotros presentamos una detallada evaluación de nuestras representaciones para recuperación genérica por contenido, recuperación de formas no rígidas y correspondencias en mallas. Desde nuestros resultados, es posible concluir que el uso de características locales puede mejorar el proceso de evaluar la similitud entre modelos 3D. Y más aún, nuestras representaciones pueden ayudar a mejorar simultáneamente la efectividad y la eficiencia de la recuperación de modelos 3D basada en contenido y de la búsqueda de correspondencias.
13
Alves, do Valle Junior Eduardo. "Local-Descriptor Matching for Image Identification Systems." Cergy-Pontoise, 2008. http://biblioweb.u-cergy.fr/theses/08CERG0351.pdf.
Анотація:
L'identification d'images (ou la détection des copies) consiste à retrouver l'original d’où est issue une image requête ainsi que les metadonnées associées, telles que titres, auteurs, droits de reproduction, etc. . . La tâche est difficile en raison de la variété des transformations que l'image originale peut avoir subi. Les systèmes d'identification d'images basées sur des descripteurs locaux ont montré une excellente efficacité, mais souffrent souvent des problèmes de rapidité d'exécution car, des centaines, voire des milliers de descripteurs, doivent être appariés afin de trouver une seule image. L'objectif de notre travail est de fournir des méthodes rapides pour l’appariement des descripteurs, basées sur la recherche rapide des k-plus proches voisins dans des espaces de grandes dimensions. De cette façon, nous pouvons gagner les avantages d’efficacité amenés par l'utilisation des descripteurs locaux, pendant qu’on minimise les problèmes d’efficience. Nous proposons trois nouvelles pour la recherche des k-plus proches voisins ; les 3-way trees, qui améliorent les KD-trees travers l’utilisation des noeuds chevauchants redondants ; les projection KD-forests, qui utilisent des multiples KD-trees à dimensionnalité modérée ; et les multicurves, qui utilisent des multiples courbes d’Hilbert remplissantes de l’espace. Ces techniques cherchent à réduire le nombre d’accès aléatoires, pour être bien adaptées à l’implémentation en mémoire secondaireImage identification (or copy detection) consists in retrieving the original from which a query image possibly derives, as well as any related metadata, such as titles, authors, copyright information, etc. The task is challenging because of the variety of transformations that the original image may have suffered. Image identification systems based on local descriptors have shown excellent efficacy, but often suffer from efficiency issues, since hundreds, even thousands of descriptors, have to be matched in order to find a single image. The objective of our work is to provide fast methods for descriptor matching, by creating efficient ways to perform the k-nearest neighbours search in high-dimensional spaces. In this way, we can gain the advantages from the use of local descriptors, while minimising the efficiency issues. We propose three new methods for the k-nearest neighbours search: the 3-way trees — an improvement over the KD-trees using redundant, overlapping nodes; the projection KD-forests — a technique which uses multiple moderate dimensional KD-trees; and the multicurves, which is based on multiple moderate dimensional Hilbert space-filling curves. Those techniques try to reduce the amount of random access to the data, in order to be well adapted to the implementation in secondary memory
14
Yencken, Daniel Egil Ferdinand. "Local uses of global media." Florianópolis, SC, 2008. http://repositorio.ufsc.br/xmlui/handle/123456789/91200.
Анотація:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-Graduação em Letras/Inglês e Literatura CorrespondenteMade available in DSpace on 2012-10-23T19:48:41Z (GMT). No. of bitstreams: 1 251709.pdf: 8526235 bytes, checksum: 89333c6b26dd765f2f5f895e13a870ce (MD5)
Against the backdrop of the increasing accessibility of media production technologies and the growth in the usage of Internet video websites, this thesis investigates the video work published on the activist media website Centro de Mídia Independente (CMI), in order to explore the uses being made of Internet video in a local context. The thesis looks at a number of new paradigms of the global in order to provide a theoretical context from which to consider the technology on which this use of video is based, the new social movements from which the videos are emerging, and how the videos are positioned in relation to the globalized networked environment of the Internet. The context for the textual analysis is provided by a discussion of narrative forms in journalistic texts, documentary and new media, and particularly, of documentary modes, tensions between journalism and documentary, the impact of digital media on documentary, and properties of digital and new media. The analysis takes the video production from Florianópolis posted to the CMI in 2005 as a case study, exploring the range of documentary modes suggested by the videos, additional styles and strategies that they make use of, and the integration of the videos with the hypertext environment in which they are posted. The thesis argues that a significant dimension of the videos is the diversity of styles and perspectives that they represent. It also argues that locality can be considered in the videos through the shared contexts of their subject matter and of the way in which they are posted to the CMI website. The thesis concludes that the multiplicity of forms of expression encountered in the videos and the multiplicity of perspectives that they provide on their subjects points to the democratic potential of websites such as the Centro de Mídia Independente. Tendo com pano de fundo o crescente acesso às tecnologias de produção de mídia e o crescimento no uso de websites relacionados ao uso de vídeo na Internet, esta dissertação investiga os trabalhos em vídeo publicados no website de mídia ativista, Centro de Mídia Independente (CMI), para explorar os usos de vídeo na Internet em um contexto local. A dissertação aborda novos paradigmas 'do global' para oferecer um contexto teórico onde são considerados a tecnologia usada por estes vídeos, os novos movimentos sociais de onde os vídeos estão surgindo e a forma como os vídeos são posicionados em relação ao ambiente globalizado e em rede da Internet. O contexto da análise textual é constituído por uma discussão do discurso jornalístico, do documentário e das novas mídias, e particularmente, de modos documentários, de tensões entre jornalismo e documentário, do impacto de mídia digital no documentário, e das propriedades de mídias novas e digitais. A análise traz como estudo de caso a produção de vídeos em Florianópolis de 2005, disponibilizada no website do CMI, e explora a variedade de modos documentários sugeridos pelos vídeos, estilos e estratégias utilizadas por estes e a integração dos vídeos com o ambiente onde estão disponibilizados. A dissertação argumenta que um aspecto significativo dos vídeos é a diversidade de estilos e perspectivas que eles representam. É argumentado ainda que a questão de localidade pode ser considerada nos vídeos a partir dos contextos compartilhados dos seus assuntos e da maneira que estes estão disponibilizados no website do CMI. Conclui-se que a multiplicidade das formas de expressão encontradas nos vídeos e a multiplicidade de perspectivas que oferecem em relação a seus sujeitos apontam o potencial democrático de websites como o Centro de Mídia Independente.
15
Algeri, Carla. "O Local e o global." Florianópolis, SC, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/95303.
Анотація:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Jornalismo, Florianópolis, 2011Made available in DSpace on 2012-10-25T23:54:29Z (GMT). No. of bitstreams: 1 294490.pdf: 5528678 bytes, checksum: df429fb46dd5b7f503b9889c793ac616 (MD5)
A evolução tecnológica, econômica e cultural vem alterando as dimensões de espaço e tempo na sociedade contemporânea. O desenvolvimento dos meios de comunicação muda as relações sociais básicas, onde a interação não se dá mais somente pela proximidade física, mas também pelas afinidades e interesses dos indivíduos. Em um momento em que a noção de espaço está cada vez mais desvinculada de um território geográfico, torna-se pertinente discutir a importância do jornalismo local frente à globalização dos meios de comunicação. Assim, procurou-se analisar o que é pauta em jornais locais, cuja principal característica é a forte ligação com a territorialidade. Abordou-se o conceito de noticiabilidade, entendido a partir de três níveis: a) nos valores substantivos das notícias, os valores-notícia; b) no tratamento dos fatos, como as características dos meios de comunicação e c) na visão dos fatos, a partir dos critérios éticos e deontológicos que norteiam a atividade jornalística. A análise centrou-se em dois jornais locais do Oeste catarinense, o Diário do Iguaçu, de Chapecó, e o Diário do Oeste Catarinense, de Concórdia. A região foi escolhida por ser a mais distante da capital e apresentar características econômicas e culturais distintas. O desenvolvimento da imprensa em Santa Catarina, bem como as características de formação do Oeste catarinense também foram abordadas. Utilizou-se a metodologia de análise de conteúdo e entrevistas com 14 jornalistas e três proprietários dos jornais pesquisados. Uma imprensa engajada em questões comunitárias e ao mesmo tempo preocupada com as pressões decorrentes da proximidade foi uma das conclusões encontradas na pesquisa.
16
Horna, Carranza Luis Alberto. "Specialised global methods for binocular and trinocular stereo matching." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29017.
Анотація:
The problem of estimating depth from two or more images is a fundamental problem in computer vision, which is commonly referred as to stereo matching. The applications of stereo matching range from 3D reconstruction to autonomous robot navigation. Stereo matching is particularly attractive for applications in real life because of its simplicity and low cost, especially compared to costly laser range finders/scanners, such as for the case of 3D reconstruction. However, stereo matching has its very unique problems like convergence issues in the optimisation methods, and challenges to find matches accurately due to changes in lighting conditions, occluded areas, noisy images, etc. It is precisely because of these challenges that stereo matching continues to be a very active field of research. In this thesis we develop a binocular stereo matching algorithm that works with rectified images (i.e. scan lines in two images are aligned) to find a real valued displacement (i.e. disparity) that best matches two pixels. To accomplish this our research has developed techniques to efficiently explore a 3D space, compare potential matches, and an inference algorithm to assign the optimal disparity to each pixel in the image. The proposed approach is also extended to the trinocular case. In particular, the trinocular extension deals with a binocular set of images captured at the same time and a third image displaced in time. This approach is referred as to t +1 trinocular stereo matching, and poses the challenge of recovering camera motion, which is addressed by a novel technique we call baseline recovery. We have extensively validated our binocular and trinocular algorithms using the well known KITTI and Middlebury data sets. The performance of our algorithms is consistent across different data sets, and its performance is among the top performers in the KITTI and Middlebury datasets.
17
Laadhar, Amir. "Local matching learning of large scale biomedical ontologies." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30126.
Анотація:
Les larges ontologies biomédicales décrivent généralement le même domaine d'intérêt, mais en utilisant des modèles de modélisation et des vocabulaires différents. Aligner ces ontologies qui sont complexes et hétérogènes est une tâche fastidieuse. Les systèmes de matching doivent fournir des résultats de haute qualité en tenant compte de la grande taille de ces ressources. Les systèmes de matching d'ontologies doivent résoudre deux problèmes: (i) intégrer la grande taille d'ontologies, (ii) automatiser le processus d'alignement. Le matching d'ontologies est une tâche difficile en raison de la large taille des ontologies. Les systèmes de matching d'ontologies combinent différents types de matcher pour résoudre ces problèmes. Les principaux problèmes de l'alignement de larges ontologies biomédicales sont: l'hétérogénéité conceptuelle, l'espace de recherche élevé et la qualité réduite des alignements résultants. Les systèmes d'alignement d'ontologies combinent différents matchers afin de réduire l'hétérogénéité. Cette combinaison devrait définir le choix des matchers à combiner et le poids. Différents matchers traitent différents types d'hétérogénéité. Par conséquent, le paramétrage d'un matcher devrait être automatisé par les systèmes d'alignement d'ontologies afin d'obtenir une bonne qualité de correspondance. Nous avons proposé une approche appele "local matching learning" pour faire face à la fois à la grande taille des ontologies et au problème de l'automatisation. Nous divisons un gros problème d'alignement en un ensemble de problèmes d'alignement locaux plus petits. Chaque problème d'alignement local est indépendamment aligné par une approche d'apprentissage automatique. Nous réduisons l'énorme espace de recherche en un ensemble de taches de recherche de corresondances locales plus petites. Nous pouvons aligner efficacement chaque tache de recherche de corresondances locale pour obtenir une meilleure qualité de correspondance. Notre approche de partitionnement se base sur une nouvelle stratégie à découpes multiples générant des partitions non volumineuses et non isolées. Par conséquence, nous pouvons surmonter le problème de l'hétérogénéité conceptuelle. Le nouvel algorithme de partitionnement est basé sur le clustering hiérarchique par agglomération (CHA). Cette approche génère un ensemble de tâches de correspondance locale avec un taux de couverture suffisant avec aucune partition isolée. Chaque tâche d'alignement local est automatiquement alignée en se basant sur les techniques d'apprentissage automatique. Un classificateur local aligne une seule tâche d'alignement local. Les classificateurs locaux sont basés sur des features élémentaires et structurelles. L'attribut class de chaque set de donne d'apprentissage " training set" est automatiquement étiqueté à l'aide d'une base de connaissances externe. Nous avons appliqué une technique de sélection de features pour chaque classificateur local afin de sélectionner les matchers appropriés pour chaque tâche d'alignement local. Cette approche réduit la complexité d'alignement et augmente la précision globale par rapport aux méthodes d'apprentissage traditionnelles. Nous avons prouvé que l'approche de partitionnement est meilleure que les approches actuelles en terme de précision, de taux de couverture et d'absence de partitions isolées. Nous avons évalué l'approche d'apprentissage d'alignement local à l'aide de diverses expériences basées sur des jeux de données d'OAEI 2018. Nous avons déduit qu'il est avantageux de diviser une grande tâche d'alignement d'ontologies en un ensemble de tâches d'alignement locaux. L'espace de recherche est réduit, ce qui réduit le nombre de faux négatifs et de faux positifs. L'application de techniques de sélection de caractéristiques à chaque classificateur local augmente la valeur de rappel pour chaque tâche d'alignement localAlthough a considerable body of research work has addressed the problem of ontology matching, few studies have tackled the large ontologies used in the biomedical domain. We introduce a fully automated local matching learning approach that breaks down a large ontology matching task into a set of independent local sub-matching tasks. This approach integrates a novel partitioning algorithm as well as a set of matching learning techniques. The partitioning method is based on hierarchical clustering and does not generate isolated partitions. The matching learning approach employs different techniques: (i) local matching tasks are independently and automatically aligned using their local classifiers, which are based on local training sets built from element level and structure level features, (ii) resampling techniques are used to balance each local training set, and (iii) feature selection techniques are used to automatically select the appropriate tuning parameters for each local matching context. Our local matching learning approach generates a set of combined alignments from each local matching task, and experiments show that a multiple local classifier approach outperforms conventional, state-of-the-art approaches: these use a single classifier for the whole ontology matching task. In addition, focusing on context-aware local training sets based on local feature selection and resampling techniques significantly enhances the obtained results
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Andersson, Jenny, and Julia Borgvall. "Securing the global brand strategy : – global standardization or local adaptation." Thesis, Linnéuniversitetet, Ekonomihögskolan, ELNU, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-13036.
Анотація:
Master thesis in Business Administration, 15hp, School of Business and Economics, LinnaeusUniversity, Växjö, Marketing, 4FE02E, spring 2011 Authors: Jenny Andersson and Julia Borgvall Tutor: Engelbert Weiss Company contact person: Peter Samuelsson, Gunnebo AB Title: Securing the global brand strategy – global standardization or local adaptation Background: The infrastructure available today provides opportunities for companies allaround the world to transcend national boarders easily and to operate on the global market. During the preceding decades, brand management in the international environment hasbeen frequently discussed. The choice of a clear branding strategy and clear goals of what acompany wants to achieve is of great importance. Furthermore, companies that act in a globalenvironment need to decide upon whether to be standardized across these markets or to adaptto each specific market. Purpose: To reach an understanding of the factors influencing the choice of internationalbranding strategy by global standardization or local adaptation. Methodology: A case study has been used in this research in order to meet the purpose. Sincethis thesis is of a qualitative character the empirical data has been collected through semi-structured interviews within three respondent segments in the case organization: management,communication and sales. Conclusion: A conclusion drawn from this research is the importance of internalcommunication, when it comes to the formulation and implementation of brand strategies. - Factors influencing the decision of a global standardize brand strategy can be; the possibilityto become a strong global player, decreased expenses of marketing, economics of scale. - Factors influencing the decision of a local adaptation strategy can be; cultural differences,history and heritage, better knowledge of the local market. Suggestions for further research: Further research could be to conduct a more thoroughstudy with more respondents from different multinational companies and also to look at thecustomers' point of view.
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Porporino, Mafalda. "Developmental differences in global and local perception : is global perception more attention demanding than local perception." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30796.
Анотація:
The primary purpose of the present study was to examine various aspects of local and global perception in groups of children and young adults with average ages of 6, 8, 10, 12, and 22 years. The aspects examined included developmental differences in RT for local and global visual information, the influence of filtering on global and local perception, and role of distracter congruency and compatibility on processing local and global stimuli. At a general level, the findings revealed that participants processed global faster than local stimuli. With the presence of distracters, 6 and 8-year-old participants demonstrated slower RTs for global targets relative to local targets. Distracter congruency or compatibility did not differentially affect global and local processing. However, congruency did appear to be related to differential performance for 6-year old males versus females. These results indicate that the underlying processes involved in global and local perception may be separate, with global perception relying on attentional mechanisms to a greater extent than local perception.
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Fellner, Gerlinde, and Gabriele K. Lünser. "Cooperation in local and global groups." Inst. für Volkswirtschaftstheorie und -politik, WU Vienna University of Economics and Business, 2008. http://epub.wu.ac.at/256/1/document.pdf.
Анотація:
Multiple group memberships are the rule rather than the exception. Locally operating groups frequently offer the advantage of providing social recognition and higher marginal benefits to the individual, whereas globally operating groups may be more beneficial from a social perspective. Within a voluntary contribution environment we experimentally investigate the tension that arises when subjects belong to a smaller local and a larger global group. When the global public good is more efficient individuals first attempt to cooperate in the global public good. However, this tendency quickly unravels and cooperation in the local public good builds up. (author´s abstract)Series: Department of Economics Working Paper Series
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Godelier, Éric. "Usinor-Arcelor : du local au global /." Paris : Hermes science publications-Lavoisier, 2006. http://catalogue.bnf.fr/ark:/12148/cb40191322w.
22
Acciaro, Vincenzo Carleton University Dissertation Computer Science. "Local global methods in number theory." Ottawa, 1995.
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Schultz, Steven Peter. "Attentional Window and Global/Local Processing." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6383.
Анотація:
How does the focus of attention influence the encoding of information? Research has shown that size and allocation of the attentional window has an influence on what information is attended to or missed. The size-scale of features also effects processing of visual information. Previous research involving hierarchical stimuli suggests precedence for global features. In the present experiment, I investigated the influence of attentional window size on accuracy of encoding hierarchical stimuli at the global and local level. Here I introduce a new method for manipulating the size of the attentional window and for collecting unconstrained responses. At the start of each trial, observers tracked a dashed-line rectangular box, which either broadened or narrowed in size after onset. This sequence was immediately followed by a brief presentation of two hierarchical letters presented simultaneously on the left and right sides of the screen. The box preceding the hierarchical letters either broadened to a size large enough to include both letters at the global level, or narrowed to a size small enough to include a maximum of two letters at the local level at either side of the screen. Observers reported all letters they were able to identify. Results from two experiments indicate an overall precedence of global letters. However, a narrow attentional window reduced global precedence, as would be expected with more focused attention. The narrow windows also produced more same-side identifications of both global and local letters. The second experiment also showed that reducing the processing time decreased the global advantage.
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Dutra, Juliana Noronha [UNESP]. "RAP: identidade local e resistência global." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/95121.
Анотація:
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Poderia a globalização, a maneira do que ocorre com a disseminação da tecnologia, promover uma dissolução das identidades culturais locais em uma única cultura global? No processo mais ou menos avassalador do capitalismo globalizado, alguns vêem como certa a morte das culturas e tradições locais de longa herança histórica e que conseguiram sobreviver alheias aos apelos da cultura moderna. Outros acreditam que as culturas locais tendem a integrar os elementos da cultura globalizada dentro de suas próprias perspectivas e, como resultado, novas formas de hibridismo cultural irão surgir em lugar de uma mera assimilação passiva da cultura dominante. O rap como um fenômeno cultural surgido no contexto da globalização pode servir como referencial para balizar essa discussão. O rap é um gênero musical criado por jovens negros e imigrantes de Nova Iorque que se colocou como uma forma de resistência ao modelo massificador da Indústria Cultural. A partir dos anos 80, o rap, assim como o Hip Hop, tomou uma expressão global se desenvolvendo também no Brasil. Nossa hipótese é que o rap não é simplesmente uma reprodução de um gênero musical, mas que ao ser produzido em determinada localidade adquire particularidades que são expressão de uma identidade local. Nesse trabalho pretendemos analisar a produção do grupo Trovadores criado por jovens da periferia de Diadema e verificar se teria um significado de resistência à globalização a partir da construção de uma identidade local.
Could the globalization, like what it with the dissemination of the technology, to promote a breakup of the local cultural identities in an only global culture? In the most overpowering process of the globalizated capitalism, some see as right the death of the cultures and local traditions of long historical inheritance and that got to survive strange to the appeals of the modern culture. Other people believe that the local cultures tend to integrate the elements of the globalizated culture inside of its own perspectives and, as result, new forms of cultural hybridism will appear instead of a mere passive assimilation of the dominant culture. The rap as a cultural phenomenon appeared in the context of the globalization can be good as reference to beacon that discussion. The rap is a musical gender created by black youths and immigrants from New York that it was placed as a resistance form to the model massificated of the Cultural Industry. Starting from the eighties, the rap, as well as Hip Hop, took a global expression if also developing in Brazil. Our hypothesis is that the rap is not simply a reproduction of a musical gender but that acquires particularities that are expression of a local identity when being produced at certain place. In this work we intended to analyze the production of the group Trovadores created for youths of the periphery of Diadema and to verify if they would have a resistance meaning to the globalization starting from the construction of a local identity.
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Dutra, Juliana Noronha. "RAP : identidade local e resistência global /." São Paulo : [s.n], 2007. http://hdl.handle.net/11449/95121.
Анотація:
Resumo: Poderia a globalização, a maneira do que ocorre com a disseminação da tecnologia, promover uma dissolução das identidades culturais locais em uma única cultura global? No processo "mais ou menos avassalador" do capitalismo globalizado, alguns vêem como certa a morte das culturas e tradições locais de longa herança histórica e que conseguiram sobreviver alheias aos apelos da cultura moderna. Outros acreditam que as culturas locais tendem a integrar os elementos da cultura globalizada dentro de suas próprias perspectivas e, como resultado, novas formas de hibridismo cultural irão surgir em lugar de uma mera assimilação passiva da cultura dominante. O rap como um fenômeno cultural surgido no contexto da globalização pode servir como referencial para balizar essa discussão. O rap é um gênero musical criado por jovens negros e imigrantes de Nova Iorque que se colocou como uma forma de resistência ao modelo massificador da Indústria Cultural. A partir dos anos 80, o rap, assim como o Hip Hop, tomou uma expressão global se desenvolvendo também no Brasil. Nossa hipótese é que o rap não é simplesmente uma reprodução de um gênero musical, mas que ao ser produzido em determinada localidade adquire particularidades que são expressão de uma identidade local. Nesse trabalho pretendemos analisar a produção do grupo Trovadores criado por jovens da periferia de Diadema e verificar se teria um significado de resistência à globalização a partir da construção de uma identidade local.Abstract: Could the globalization, like what it with the dissemination of the technology, to promote a breakup of the local cultural identities in an only global culture? In the most "overpowering process of the globalizated capitalism, some see as right the death of the cultures and local traditions of long historical inheritance and that got to survive strange to the appeals of the modern culture. Other people believe that the local cultures tend to integrate the elements of the globalizated culture inside of its own perspectives and, as result, new forms of cultural hybridism will appear instead of a mere passive assimilation of the dominant culture. The rap as a cultural phenomenon appeared in the context of the globalization can be good as reference to beacon that discussion. The rap is a musical gender created by black youths and immigrants from New York that it was placed as a resistance form to the model massificated of the Cultural Industry. Starting from the eighties, the rap, as well as Hip Hop, took a global expression if also developing in Brazil. Our hypothesis is that the rap is not simply a reproduction of a musical gender but that acquires particularities that are expression of a local identity when being produced at certain place. In this work we intended to analyze the production of the group Trovadores created for youths of the periphery of Diadema and to verify if they would have a resistance meaning to the globalization starting from the construction of a local identity.
Orientador: Marcos Fernandes Pupo Nogueira
Coorientador: Mario Fernando Bolognesi
Mestre
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SANTOS, FILHO Jaime César dos. "Fibrações: do local para o global." Universidade Federal de Pernambuco, 2015. https://repositorio.ufpe.br/handle/123456789/25571.
Анотація:
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CAPES
Fibrações: do Local para o Global coloca toda a teoria das fibrações dentro do contexto de espaços sobre uma base. Isso possibilita desenvolver de forma completa (no sentido de ser autocontida) a teoria tanto do ponto de vista de reobter os resultados principais de forma sistemática, quanto do ponto de vista de generalizá-los. O foco desse trabalho está nos resultados de localização. Para isso é fundamental entender a importância da Propriedade de Extensão de Seção (abreviada do inglês por SEP) e sob quais hipóteses podemos dizer que esta propriedade é local (Localização da SEP). Com a ajuda da SEP provamos que a Propriedade de Levantamento de Homotopias (CHP) é local (Teorema de Uniformização de Hurewicz). Por fim, caracterizamos localmente as fibrações. No capítulo dois introduzimos os nossos objetos de estudos, os espaços sobre uma base, damos vários exemplos e definimos produto fibrado. Definimos também o que chamamos de B-homotopia e B-equivalência homotópica. No capítulo três trabalhamos com a Propriedade de Extensão de Seção (SEP), mostrando que a SEP é uma propriedade local sob certas hipóteses gerais. Mostramos também que essa propriedade é hereditária. No capítulo quatro definimos as fibrações de Hurewicz e a Propriedade de Levantamento de Homotopias (CHP) e mostramos que são propriedades essencialmente equivalentes. Mostramos que estas propriedades são locais. No capítulo cinco definimos uma fibração fraca de modo mais geral que as fibrações de Hurewicz. Reobtemos resultados semelhantes aos obtidos para fibrações, inclusive o análogo ao Teorema da Uniformização de Hurewicz. No fim do capítulo caracterizamos localmente as fibrações fracas.
property is hereditary. In chapter four we define the Hurewicz Fibrations and the Covering Homotopy Property (CHP) and show them to be essentially equivalent properties. We have shown that these properties are local. In chapter five we define a weak fibration more generally than the Hurewicz fibrations. We obtain similar results to those obtained for fiber, including the analogue to the Hurewicz Uniformization Theorem. At the end of the chapter we characterize weak fiber locally. Fibrações: do Local para o Global puts the entire theory of fiber within the context of spaces on a basis. This makes it possible to develop fully (in the sense of being self-contained) the theory both from the point of view of retrieving the main results in a systematic way, and from the point of view of generalizing them. The focus of this work is on localization results. For this it is fundamental to understand the importance of Section Extension Property (SEP) and under what hypotheses we can say that this property is local (SEP localization). With the help of SEP we prove that the Covering Homotopy Property (CHP) is local (Hurewicz Uniformization Theorem). Finally, we characterize the localities. In chapter two we introduce our objects of study, the spaces on a base, we give several examples and define bundled product. We also define what we call B-homotopy and B-homotopic equivalence. In chapter three we work with the Section Extension Property (SEP), showing that the SEP is a local property under certain general assumptions. We also show that this property is hereditary. In chapter four we define the Hurewicz Fibrations and the Covering Homotopy Property (CHP) and show them to be essentially equivalent properties. We have shown that these properties are local. In chapter five we define a weak fibration more generally than the Hurewicz fibrations. We obtain similar results to those obtained for fiber, including the analogue to the Hurewicz Uniformization Theorem. At the end of the chapter we characterize weak fiber locally.
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Makri, Aikaterini, Karolos-Konstantinos Papadas, and Bodo B. Schlegelmilch. "Global-local consumer identities as drivers of global digital brand usage." Emerald Publishing Limited, 2018. http://dx.doi.org/10.1108/IMR-03-2018-0104.
Анотація:
Purpose: The purpose of this paper is to represent the first empirical attempt to explore global-local consumer
identities as drivers of global digital brand usage. Specifically, this study considers a unique category of digital
products, social networking sites (SNS), and develops a set of hypotheses to assess the mechanism through
which location-based identities influence the actual usage of global SNS (Facebook and Instagram).
Moreover, cross-country variations are investigated under the lens of developed vs developing countries.
Design/methodology/Approach: Cross-country surveys in a developed (Austria) and a developing
country (Thailand) were conducted. Data collected from 425 young adults were analyzed using SEM
techniques in order to test a set of hypotheses.
Findings: Results show that in Thailand, users with a global identity enjoy participating in global SNS
more than their counterparts in Austria. In addition, consumers with a local identity in Thailand demonstrate
less pleasure when participating in global SNS than their counterparts in Austria, and consequently are less
inclined to use global SNS.
Practical implications: Findings provide digital marketers with useful insights into important strategic
decisions regarding the selection and potential adaptation of global digital brands according to the country context.
Originality/value: This research is the first to extend the location-based identity research in the context of
global digital brands, explain how global-local identities predict SNS usage through an engagement
mechanism and investigate cross-country variations of this mechanism.
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Genctav, Murat. "Global Skeleton." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612729/index.pdf.
Анотація:
A novel and unconventional shape description scheme is proposed which captures the hierarchy of parts and medial descriptors. Both the parts and the medial descriptors are extracted simultaneously, in a complementary fashion, using a real valued function defined over the shape domain. The function arises out of both global and local interactions within the shape domain and it is related to an extension of a linear elliptic PDE with an integral term. The part hierarchies, extracted via level sets and watersheds of the function, are organized into proper binary trees, and the medial descriptors, extracted via ridges and watersheds of the function, are organized as rooted depth-1 trees. The medial descriptors (we named global skeleton) consist of two distinct medial abstractions. The limbs and prominent boundary features are
captured in the form of conventional skeletons. Secondly, the coarse structure of the shape is captured in the form of a watershed region, which is a powerful tool in respect to both stability and representation of prominent shape properties. Additionally, as an important technical contribution that addresses part matching, the randomized hierarchy tree is introduced that endows the part hierarchy tree with a probabilistic structure.
29
Rubinsson, Sebastian. "Global marketing through collaboration of local marketing agencies : How can local marketing agencies work together for global clients?" Thesis, Södertörns högskola, Institutionen för samhällsvetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-41110.
Анотація:
Background: The world becomes more connected as technology advances and with the internet as a distribution channel more companies internationalises. However, there are still cultural differences around the world that marketers must take into consideration. The marketing industry faces difficult challenges in adaptation to international marketing, as collaboration between local marketing agencies could be a solution. Purpose: The purpose of the study is to contribute with understanding of how local marketing agencies can work together for global clients, and how these agencies can adapt local marketing for these clients. In order to understand how marketing agencies can work together, this study will contribute with understanding of this collaboration between local marketing agencies and how they can help each other grow their businesses. Method: This study uses a qualitative method with unstructured interviews of five people operational within a network of local marketing agencies. Theory: The theoretical framework for this study consists of theories in international marketing, collaboration and learning. Results and conclusions: By collaborating in a network, local marketing agencies get access to international markets and can support global clients. By having multiple local agencies working together for global clients, these agencies all provide local knowledge and create local communication. The collaboration in a network is most effective if the competition is eliminated, which can be done through shared ownership and personal connection within the network.
30
Edwards, Evan B. "Internetworking : automated local and global network monitoring /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA321635.
Анотація:
Thesis (M.S. in Computer Science) Naval Postgraduate School, September 1996.Thesis advisor(s): D.P. Brutzman, Lou Stevens. "September 1996." Includes bibliographical references (p. 229-231). Also available online.
31
Schinck, Amelie. "The local-global principle in number theory." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ64047.pdf.
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Scott, Guy Lindsay. "Local and global interpretation of moving images /." Brighton [East Sussex] : University of Sussex, School of Social Sciences, Cognitive Studies Programme, 1986. http://doi.library.cmu.edu/10.1184/OCLC/17842732.
33
Barra, Aleams. "Equivalence Theorems and the Local-Global Property." UKnowledge, 2012. http://uknowledge.uky.edu/math_etds/5.
Анотація:
In this thesis we revisit some classical results about the MacWilliams equivalence theorems for codes over fields and rings. These theorems deal with the question whether, for a given weight function, weight-preserving isomorphisms between codes can be described explicitly. We will show that a condition, which was already known to be sufficient for the MacWilliams equivalence theorem, is also necessary. Furthermore we will study a local-global property that naturally generalizes the MacWilliams equivalence theorems. Making use of F-partitions, we will prove that for various subgroups of the group of invertible matrices the local-global extension principle is valid.
34
Liang, Yongqi. "Principe local-global pour les zéro-cycles." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00630560.
Анотація:
Dans cette thèse, nous nous intéressons à l'étude de l'arithmétique (le principe de Hasse, l'approximation faible, et l'obstruction de Brauer-Manin) des zéro-cycles sur les variétés algébriques définies sur des corps de nombres. Nous introduisons la notion de sous-ensemble hilbertien généralisé. En utilisant la méthode de fibration, nous démontrons que l'obstruction de Brauer-Manin est la seule au principe de Hasse et à l'approximation faible pour les zéro-cycles de degré 1; et établissons l'exactitude d'une suite de type global-local concernant les groupes de Chow des zéro-cycles, pour certaines variétés qui admettent une structure de fibration au-dessus d'une courbe lisse ou au-dessus de l'espace projectif, où les hypothèses arithmétiques sont posées seulement sur les fibres au-dessus d'un sous-ensemble hilbertien généralisé.De plus, nous relions l'arithmétique des points rationnels et l'arithmétique des zérocycles de degré 1 sur les variétés géométriquement rationnellement connexes. Comme application, nous trouvons que l'obstruction de Brauer-Manin est la seule au principe de Hasse et à l'approximation faible pour les zéro-cycles de degré 1 sur- les espaces homogènes d'un groupe algébrique linéaire à stabilisateur connexe,- certains fibrés en surfaces de Châtelet au-dessus d'une courbe lisse ou au-dessus de l'espace projectif (en particulier, les solides de Poonen).
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Pilotto, Concetta Chandy K. Mani Chandy K. Mani. "Local-to-global in multi-agent systems /." Diss., Pasadena, Calif. : California Institute of Technology, 2007. http://resolver.caltech.edu/CaltechETD:etd-05232007-084106.
36
Scott, G. L. "Local and global interpretation of moving images." Thesis, University of Sussex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373294.
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Paulin, Alexander. "Local to global compatability on the eigencurve." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498427.
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Barbakh, Wesam. "Local versus global interactions in clustering algorithms." Thesis, University of the West of Scotland, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.742762.
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Carvalho, Edson Donizete de. "Estudo local e global de propriedades aritmeticas." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306497.
Анотація:
Orientador: Antonio Jose EnglerDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica
Made available in DSpace on 2018-07-23T04:17:28Z (GMT). No. of bitstreams: 1 Carvalho_EdsonDonizetede_M.pdf: 1652304 bytes, checksum: b1728435cc6db63fbfebbe9103f5eb8f (MD5) Previous issue date: 1997
Resumo: No Capítulo 1, vimos os tipo de valorizações de um corpo (arquimediana e não-arquimediana) com destaques para a valorização exponêncial p-ádica e obtemos os corpos dos racionais p-ádicos através do completamento de Q por sequências de Cauchy p-ádicas. No capítulo 2, mostramos que o conjunto de valores, discriminante, e dimensão são invariantes na classe de equivalência de uma forma quadrática e que toda forma quadrática se decompõe como uma soma de formas quadráticas totalmente isotrópica, hiperbólica e anisotrópica. No capítulo 3 usamos o Símbolo de Legendre e a Lei de Reciprocidade Quadrática para determinarmos quando.um elemento de um corpo finito é um quadrado e mostramos que toda forma quadrática sobre corpos finitos com dimensão maior ou igual a 2 é universal e se a dimensco for maior ou igual a 3 será isotrópica. No capítulo 4 mostramos que toda forma quadrática sobre Qp com dimensão maior ou igual a 5 é isotrópica e vimos que condições devemos ter para que uma forma .quadrática independente de sua dimensão seja isotrópica e represente um elemento qualquer no corpo dos racionais p-ádicos. Já no capítulo 5, vimos que discutir. a isotropia de uma forma quadrática sobre Q equivale a verificar se esta mesma forma quadrática vista sobre os completamentos p-ádicos, para todo p(incluindo p = 8) é isotropia, do mesmo modo para um elemento racional seja representado por uma forma quadrática sobre Q, este elemento terá que ser representado por essa mesma forma quadrática visto nos completamentos p-ádicos. E para que duas formas quadráticas sejam equivalentes nos racionais, estas terão que ser equivalentes em cada completamento dos racionais p-ádicos. Por fim, fizemos algumas aplicações do que vimos em nosso trabalho.
Abstract: Not informed
Mestrado
Mestre em Matemática
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Birnie, Steven James. "Local and global explorations through design research." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/1788c181-878d-4f5b-9de7-2ad099a68e52.
Анотація:
This doctoral thesis is a practice-led and corporate-grounded enquiry into the role of design research methods in a global technology company. The work aims to understand and communicate through a series of case studies how locally conducted participatory action research can be integrated into the processes of an in-house design team at the global NCR Corporation. It questions the current approaches taken in the design and development of consumer transaction technologies in the context of a global organisation and new markets. The thesis starts by introducing the reader to the global corporation in which the study is focused and author employed, the NCR Corporation. The contextual grounding of the corporate environment, its heritage, history and continued evolution will illustrate the dynamic yet traditional role design has played within the corporation. As a senior member of the Consumer Experience Design (Cx Design) team in the corporation the author is well placed to evaluate the role of design and how it can evolve. The immediate contextualisation is then followed by a broad examination of the literature in the field of design in a corporate culture, research methods and socially-led innovation. This will define the boundaries of interest and influence in the thesis. A participatory action research approach was taken to address the research questions. Informed by a series of hyperlocal and global community engagements framed and directed from within the corporate culture, the author defines an understanding of the levels of community engagement through design research. The resulting outputs are then applied within the context of the NCR Corporation where the impact and influence on such engagements can be understood. The author concludes that his contribution to new knowledge, the development of a Participatory Action Based Strategic Design Process, can be applied within a global technology company. The process adapts McNiff’s and Whitehead’s (2011) seven phases of action research reporting and Ravi Chhatpar’s strategic decision-making process. The thesis demonstrates the value and influence of design research methods in the design of consumer transaction technologies. The thesis provides an understanding of how design research methods have been applied in a corporate environment, how the insights are applied, and demonstrates how the research has influenced the author’s practice and therefore the wider Cx Design group.
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FARINAS, MAYTE SUAREZ. "THE LINEAR LOCAL-GLOBAL NEURAL NETWORK MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=3694@1.
Анотація:
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICONesta tese apresenta-se o Modelo de Redes Neurais Globais- Locais (RNGL) dentro do contexto de modelos de séries temporais. Esta formulação abrange alguns modelos não- lineares já existentes e admite também o enfoque de Mistura de Especialistas. Dedica-se especial atenção ao caso de especialistas lineares, e são discutidos extensivamente aspectos teóricos do modelo: condições de estacionariedade, identificabilidade do modelo, existência, consistência e normalidade assintótica dos estimadores dos parâmetros. Considera-se também uma estratégia de construção do modelo e são discutidos os procedimentos numéricos de estimação, apresentando uma solução para o cálculo de valores iniciais. Finalmente, ilustra-se a metodologia apresentada em duas séries temporais reais, amplamente utilizada na literatura de modelos não lineares.
In this thesis, the Local Global Neural Networks model is proposed within the context of time series models. This formulation encompasses some already existing nonlinear models and also admits the Mixture of Experts approach. We place emphasis on the linear expert case and extensively discuss the theoretical aspects of the model: stationary conditions, existence, consistency and asymptotic normality of the parameter estimates, and model identifiability. A model building strategy is also considered and the whole procedure is illustrated with two real time-series.
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Stewart, Chris G. "Incorporating global information into local nonlinear controllers." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41900.
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Zhang, Yue. "Design for Global Markets Balancing Unilateral Global Brands with Local Cultural Values." Cincinnati, Ohio : University of Cincinnati, 2009. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1250534240.
Анотація:
Thesis (Master of Design)--University of Cincinnati, 2009.Advisor: Craig M Vogel. Title from electronic thesis title page (viewed Jan. 15, 2010). Includes abstract. Keywords: product design; culture; brand; international; globalization; localization; markets. Includes bibliographical references.
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Winter, Marylin. "Artificial neural networks and map-matching for GPS navigation." Thesis, University of South Wales, 2006. https://pure.southwales.ac.uk/en/studentthesis/artificial-neural-networks-and-mapmatching-for-gps-navigation(67bf2a4a-fcd2-4a86-8895-0ed296461bc5).html.
Анотація:
Global navigation satellite systems (GNSS), such as the Global Positioning System (GPS) have been increasingly used in navigation and tracking of vehicles. Using GPS, certain positioning errors and limitations, such as multipath effects and the geometric position of the satellites (DOP) or signal obstructions by high buildings, trees and terrain, have to be considered. Generally travel on road or footpath, map-matching algorithms can be used to correlate the computed system location with a digital map network. Map Matched GPS (MMGPS) is a test-bed simulator for researching algorithms and techniques to reduce the error in position provided by a low cost stand-alone GPS receiver. In order to correctly map-match the GPS positions, a decision about the correct road can be difficult, especially at road junctions, slip roads or almost parallel roads. Investigations into the use of artificial neural networks (ANNs) for reliability and accuracy improvement of map-matched GPS positioning was initiated in previous research [Winter, 2002]. However, there are generally strong interference effects that lead to slow learning and poor generalization when a single ANN is trained to perform different subtasks on different occasions [Jacobs et al., 1991], e.g. correct transport network (TN) segment selection considering different TN geometry. Interference can be reduced by training a system composed of several different "expert" ANNs using a TN geometry indicator to decide which of the experts should be used for each training case. An aim of this research was the design, development and implementation of such a modular neural network (MNN). This work uses a new measure for indicating TN geometry, directly derived from GPS positions in MMGPS. An improvement of more than 50% to traditional map-matching techniques was achieved using the proposed MNN approach, when the correct road could not be uniquely identified by map-matching.
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Hlophe, Nthabiseng. "The role of local context in the local strategies of global brands." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/29785.
Анотація:
The greatest task of many international marketing practitioners in host organisations, entails understanding the factors that influence the localisation or standardisation of marketing programmes. The purpose of this paper is to gain insight into the role of local context in the local strategies of global brands. This paper uses a qualitative case study design of two global brands.Findings – The findings show that the role that emerging macro-level factors of local context play in the local strategies of global brands is in determining the levels at which marketing programs will be standardised or localised.Micro-level factors of local context play the role of a) setting the preconditions for product development and b) determining the extant of productivity that can be achieved in the local contextThe strategic implications that must be considered at the local level when applying a global brand include brand identity standards as well as making specific choices about global or local consumer culture positioning.Practical implications- For practitioners, the practical implications encompass strategic considerations in the course of making decisions to standardise or localise marketing programs.Originality/value – This paper highlights new variations in contextual factors within-countries. It also provides an international perspective that is rooted in local context regarding global marketing intermediaries. Lastly, it explores the strategic implications considered when applying a global brand.Dissertation (MBA)--University of Pretoria, 2012.
Gordon Institute of Business Science (GIBS)
unrestricted
46
Sanromà, Güell Gerard. "Graph matching using position coordinates and local features for image analysis." Doctoral thesis, Universitat Rovira i Virgili, 2012. http://hdl.handle.net/10803/79148.
Анотація:
Encontrar las correspondencias entre dos imágenes es un problema crucial en el campo de la visión por ordenador i el reconocimiento de patrones. Es relevante para un amplio rango de propósitos des de aplicaciones de reconocimiento de objetos en las áreas de biometría, análisis de documentos i análisis de formas hasta aplicaciones relacionadas con la geometría desde múltiples puntos de vista tales cómo la recuperación de la pose, estructura desde el movimiento y localización y mapeo.
La mayoría de las técnicas existentes enfocan este problema o bien usando características locales en la imagen o bien usando métodos de registro de conjuntos de puntos (o bien una mezcla de ambos). En las primeras, un conjunto disperso de características es primeramente extraído de las imágenes y luego caracterizado en la forma de vectores descriptores usando evidencias locales de la imagen. Las características son asociadas según la similitud entre sus descriptores. En las segundas, los conjuntos de características son considerados cómo conjuntos de puntos los cuales son asociados usando técnicas de optimización no lineal. Estos son procedimientos iterativos que estiman los parámetros de correspondencia y de alineamiento en pasos alternados.
Los grafos son representaciones que contemplan relaciones binarias entre las características. Tener en cuenta relaciones binarias al problema de la correspondencia a menudo lleva al llamado problema del emparejamiento de grafos. Existe cierta cantidad de métodos en la literatura destinados a encontrar soluciones aproximadas a diferentes instancias del problema de emparejamiento de grafos, que en la mayoría de casos es del tipo "NP-hard".
El cuerpo de trabajo principal de esta tesis está dedicado a formular ambos problemas de asociación de características de imagen y registro de conjunto de puntos como instancias del problema de emparejamiento de grafos. En todos los casos proponemos algoritmos aproximados para solucionar estos problemas y nos comparamos con un número de métodos existentes pertenecientes a diferentes áreas como eliminadores de "outliers", métodos de registro de conjuntos de puntos y otros métodos de emparejamiento de grafos.
Los experimentos muestran que en la mayoría de casos los métodos propuestos superan al resto. En ocasiones los métodos propuestos o bien comparten el mejor rendimiento con algún método competidor o bien obtienen resultados ligeramente peores. En estos casos, los métodos propuestos normalmente presentan tiempos computacionales inferiores.Trobar les correspondències entre dues imatges és un problema crucial en el camp de la visió per ordinador i el reconeixement de patrons. És rellevant per un ampli ventall de propòsits des d’aplicacions de reconeixement d’objectes en les àrees de biometria, anàlisi de documents i anàlisi de formes fins aplicacions relacionades amb geometria des de múltiples punts de vista tals com recuperació de pose, estructura des del moviment i localització i mapeig. La majoria de les tècniques existents enfoquen aquest problema o bé usant característiques locals a la imatge o bé usant mètodes de registre de conjunts de punts (o bé una mescla d’ambdós). En les primeres, un conjunt dispers de característiques és primerament extret de les imatges i després caracteritzat en la forma de vectors descriptors usant evidències locals de la imatge. Les característiques son associades segons la similitud entre els seus descriptors. En les segones, els conjunts de característiques son considerats com conjunts de punts els quals son associats usant tècniques d’optimització no lineal. Aquests son procediments iteratius que estimen els paràmetres de correspondència i d’alineament en passos alternats. Els grafs son representacions que contemplen relacions binaries entre les característiques. Tenir en compte relacions binàries al problema de la correspondència sovint porta a l’anomenat problema de l’emparellament de grafs. Existeix certa quantitat de mètodes a la literatura destinats a trobar solucions aproximades a diferents instàncies del problema d’emparellament de grafs, el qual en la majoria de casos és del tipus “NP-hard”. Una part del nostre treball està dedicat a investigar els beneficis de les mesures de ``bins'' creuats per a la comparació de característiques locals de les imatges. La resta està dedicat a formular ambdós problemes d’associació de característiques d’imatge i registre de conjunt de punts com a instàncies del problema d’emparellament de grafs. En tots els casos proposem algoritmes aproximats per solucionar aquests problemes i ens comparem amb un nombre de mètodes existents pertanyents a diferents àrees com eliminadors d’“outliers”, mètodes de registre de conjunts de punts i altres mètodes d’emparellament de grafs. Els experiments mostren que en la majoria de casos els mètodes proposats superen a la resta. En ocasions els mètodes proposats o bé comparteixen el millor rendiment amb algun mètode competidor o bé obtenen resultats lleugerament pitjors. En aquests casos, els mètodes proposats normalment presenten temps computacionals inferiors.
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Zhou, Dan. "Stereo Matching Based on Edge-Aware T-MST." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35538.
Анотація:
Dense stereo matching is one of the most extensively investigated topics in computer vision, since it plays an important role in many applications such as 3D scene reconstruction.
In this thesis, a novel dense stereo matching method is proposed based on edge-aware truncated minimum spanning tree (T-MST). Instead of employing non-local cost aggregation on traditional MST which is only generated from color differences of neighbouring pixels, a new tree structure, "Edge-Aware T-MST", is proposed to aggregate the cost according to the image texture. Specifically, cost aggregations are strongly enforced in large planar textureless regions due to the truncated edge weights. Meanwhile, the "edge fatten" effect is suppressed by employing a novel hybrid edge-prior which combines edge-prior and superpixel-prior to locate the potential disparity edges. Then a widely used Winner-Takes-All (WTA) strategy is performed to establish initial disparity map. An adaptive non-local refinement is also performed based on the stability of initial disparity estimation.
Given the stereo images from Middlebury benchmark, we estimate the disparity maps by using our proposed method and other five state-of-the-art tree-based non-local matching methods. The experimental results show that the proposed method successfully produced reliable disparity values within large planar textureless regions and around object disparity boundaries. Performance comparisons demonstrate that our proposed non-local stereo matching method based on edge-aware T-MST outperforms current non-local tree-based state-of-the-art stereo matching methods in most cases, especially in large textureless planar regions and around disparity bounaries.
48
Ahlbert, Gabriella. "Method Evaluation of Global-Local Finite Element Analysis." Thesis, Linköpings universitet, Hållfasthetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78103.
Анотація:
When doing finite element analysis upon the structure of Saab’s aeroplanes a coarse global model of mainly shell elements is used to determine the load distribution for sizing the structure. At some parts of the aeroplane it is however desirable to implement a more detailed analysis. These areas are usually modelled with solid elements; the problem of connecting the fine local solid elements to the coarse global model will shell elements then arises. This master thesis is preformed to investigate possible Global-Local methods to use for the structural analysis on Gripen. First a literature study of current methods on the market is made, thereafter a few methods are implemented on a generic test structure and later on also tested on a real detail of Gripen VU. The methods tested in this thesis are Mesh refinement in HyperWorks, RBE3 in HyperWorks, Glue in MSC Patran/Nastran and DMIG in MSC Nastran. The software is however not evaluated in this thesis, and a further investigation is recommended to find the most fitting software for this purpose. All analysis are performed with linear assumptions. Mesh refinement is an integrated technique where the elements are gradually decreasing in size. Per definition, this technique cannot handle gaps, but it has almost identical results to the fine reference model. RBE3 is a type of rigid body elements with zero stiffness, and is used as an interface element. RBE3 is possible to use to connect both Shell-To-Shell and Shell-To-Solid, and can handle offsets and gaps in the boundary between the global and local model. Glue is a contact definition and is also available in other software under other names. The global respectively the local model is defined as contact bodies and a contact table is used to control the coupling. Glue works for both Shell-To-Shell and Shell-To-Solid couplings, but has problem dealing with offsets and gaps in the boundary between the global and local model. DMIG is a superelement technique where the global model is divided into smaller sub-models which are mathematically connected. DMIG is only possible to use when the nodes on the boundary on the local model have the same position as the nodes at the boundary of the global model. Thus, it is not possible to only use DMIG as a Global-Local method, but can advantageously be combined with other methods. The results indicate that the preferable method to use for Global-Local analysis is RBE3. To decrease the size of the files and demand of computational power, RBE3 can be combined with a superelement technique, for example DMIG. Finally, it is important to consider the size of the local model. There will inevitably be boundary effect when performing a Global-Local analysis of the suggested type, and it is therefore important to make the local model big enough so that the boundary effects have faded before reaching the area of interest.
49
Ding, Baoyan. "A parametric solution for local and global optimization." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21341.pdf.
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Kube, Claus Ronald. "Collective robotics, from local perception to global action." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21586.pdf.