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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

[en] AUTOMATIC AND ASSISTED NAVIGATION ON BLACK OIL RESERVOIRS BASED ON PROBABILISTIC ROADMAPS / [pt] NAVEGAÇÃO AUTOMÁTICA E ASSISTIDA EM RESERVATÓRIOS NATURAIS DE PETRÓLEO BASEADA EM GRAFOS DE GUIA PROBABILÍSTICOS

ANTONIO LUIZ VITALO CALOMENI 08 July 2005 (has links)
[pt] Há muitas aplicações de realidade virtual que requerem navegação em ambientes 3D. Em geral, esta facilidade é oferecida permitindo que o usuário controle todos os seis graus de liberdade da câmera virtual. No entanto, dessa forma é difícil, mesmo para usuários experientes, chegar a áreas de interesse com movimentos suaves e livres de colisão. Torna-se necessário prover uma navegação assistida, onde o usuário guia a câmera mais facilmente, sem restringir sua exploração do ambiente. Além disso, é interessante prover uma navegação totalmente automática, onde o usuário seleciona um alvo e o sistema calcula um caminho suave e livre de colisões através do ambiente. Este trabalho propõe uma solução específica para navegação em modelos usados para simulação numérica de reservatórios naturais de petróleo, baseada em grafos de guia probabilísticos. Utilizados comumente em aplicações de robótica, grafos de guia probabilísticos visam capturar, através de uma amostragem aleatória, a conectividade das áreas livres da cena, sendo construídos em pré-processamento e consultados em tempo de execução. Este trabalho propõe um algoritmo de construção de grafo de guia específico para reservatórios e duas técnicas para utilizar o grafo obtido como base para prover navegação automática e navegação assistida. / [en] There are many virtual reality applications that require navigation on 3D environments. Usually, this feature is offered by allowing the user to control all the six degrees of freedom of the virtual camera. However, it is difficult in this way, even for experienced users, to reach areas of interest with smooth and collision-free paths. It becomes necessary to provide an assisted navigation, in which the user guides the camera more easily, without restricting the environment exploration. Moreover, it is interesting to provide a fully automatic navigation, in which the user selects a target and the system computes a smooth, collision-free path throughout the environment. This work proposes a specific solution for navigation on models used in numerical simulations of black oil reservoirs, based on probabilistic roadmaps. Commonly used in robotics applications, probabilistic roadmaps tend to capture, by random sampling, the conectivity of the free space of the scene, being constructed in a pre-processing stage and queried in execution time. This work proposes a roadmap construction algorithm specific to reservoirs and two techniques to use the obtained roadmap as the basis to provide assisted and automatic navigation.
2

Desarrollo de un APP basado en modelos predictivos y tecnología GPS para la recomendación y reservas de espacios en playas de estacionamiento

Diaz Mantilla, Francisco Alberto, Ocampo Hidalgo, Alexander 01 June 2021 (has links)
El presente proyecto de tesis reúne la información del proceso y los sub procesos involucrados en la gestión de venta de eventuales Central Parking Systems S.A., así mismo, las nuevas ideas propuestas para la mejora de los procesos en el campo de Acción. En el capítulo 1, se expondrá el marco teórico el cual estará constituido por los fundamentos teóricos del negocio y las tendencias y tecnologías actuales, también se presentará a la organización, su estructura organizacional, sus objetivos estratégicos y sus procesos. Para cerrar el capítulo 1 se expondrá su problemática. En el capítulo 2, se presentará los objetivos del proyecto tanto generales como específicos junto a sus respectivos fundamentos. Se expondrá los distintos beneficios que traerá consigo el proyecto. Para terminar, se presentará la evaluación comparativa de nuestra solución versus 3 otras soluciones y un detallado análisis. En el capítulo 3, se expondrá todo el modelado de negocio, tendremos los distintos artefactos del UML como el diagrama de casos de uso del negocio, los distintos actores y trabajadores de negocio para finalizar se presentará las especificaciones de casos de uso asociadas a sus reglas de negocio y representados por su diagrama de actividades. En el capítulo 4, se abordarán los temas de análisis de sistema, se presentarán los distintos requerimientos funcionales y no funcionales, como estos requerimientos funcionales son agrupados en distintos paquetes y casos de uso de sistema. En el capítulo 5, donde se definirá la arquitectura de software, es en este capítulo donde se plantean las metas y restricciones de la arquitectura, se plantean las distintas mecánicas que darán soporte de la arquitectura, por último, se tiene las distintas vistas (lógica, implementación, despliegue). En el capítulo 6, podremos apreciar la construcción de los patrones de la solución propuesta, así como el diagrama de patrones y el diccionario de datos En el capítulo 7, se definirá la calidad de software como nuestro plan de pruebas. Estos planes son la parte fundamental del software, brindaran los lineamientos a seguir para poder garantizar la calidad y buen funcionamiento de nuestro sistema En el capítulo 8, abordaremos temas de la gestión del proyecto, se presentará a los principales interesados, la EDT y por último el cronograma de trabajo en un Gantt. / This thesis project gathers the information of the process and the sub processes involved in the management of the sale of eventual Central Parking Systems S.A., as well as the new ideas proposed for the improvement of the processes in the field of Action. In chapter 1, the theoretical framework will be exposed, which will be constituted by the theoretical foundations of the business and current trends and technologies, it will also be presented to the organization, its organizational structure, its strategic objectives and its processes. To close chapter 1, its problems will be exposed. In Chapter 2, both general and specific project objectives will be presented along with their respective rationale. The different benefits that the project will bring will be exposed. Finally, the benchmarking of our solution versus 3 other solutions and a detailed analysis will be presented. In chapter 3, all the business modeling will be exposed, we will have the different UML artifacts such as the business use case diagram, the different actors and business workers, to finish, the use case specifications associated with their rules will be presented. of business and represented by its activity diagram. In Chapter 4, the issues of system analysis will be addressed, the different functional and non-functional requirements will be presented, as these functional requirements are grouped into different packages and system use cases. In chapter 5, where the software architecture will be defined, it is in this chapter where the goals and constraints of the architecture are raised, the different mechanics that will support the architecture are raised, finally, the different views (logic, implementation, deployment). In chapter 6, we will be able to appreciate the construction of the patterns of the proposed solution, as well as the pattern diagram and the data dictionary In Chapter 7, we will define software quality as our test plan. These plans are the fundamental part of the software, they will provide the guidelines to follow in order to guarantee the quality and proper functioning of our system. In Chapter 8, we will address project management issues, introduce key stakeholders, the WBS, and finally the work schedule in a Gantt. / Tesis
3

Evaluierung der Übertragungsgenauigkeit des Systems med3D zur navigationsgestützten Platzierung dentaler Implantate mit und ohne Schablonenfixation / Evaluation of the transfer accuracy of med3D system in navigationassisted dental implant placement in a fixed and unfixed approach

Lauer-Saridakis, Dagmar 08 April 2013 (has links)
No description available.

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