• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • 1
  • Tagged with
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 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] SILHOUETTES AND LAPLACIAN LINES OF POINT CLOUDS VIA LOCAL RECONSTRUCTION / [pt] SILHUETAS E LINHAS LAPLACIANAS DE NUVENS DE PONTOS VIA RECONSTRUÇÃO LOCAL

TAIS DE SA PEREIRA 29 September 2014 (has links)
[pt] No presente trabalho propomos uma nova forma de extrair a silhueta de uma nuvem de pontos, via reconstrução local de uma superfície descrita implicitamente por uma função polinomial. Esta reconstrução é baseada nos métodos Gradient one fitting e Ridge regression. A curva silhueta fica definida implicitamente por um sistema de equações não-lineares e sua geração é feita por continuação numérica. Como resultado, verificamos que nosso método se mostrou adequado para tratar dados com ruídos. Além disso, apresentamos um método para a extração local de linhas laplacianas de uma nuvem de pontos baseado na reconstrução local utilizando a triangulação de Delaunay. / [en] In this work we propose a new method for silhouette extraction of a point cloud, via local reconstruction of a surface described implicitly by a polynomial function. This reconstruction is based on the Gradient one fitting and Ridge regression methods. The curve silhouette is implicitly defined by a system of nonlinear equations, and is obtained using numerical continuation. As a result, we observe that our method is suitable to handle noisy data. In addition, we present a method for extracting Laplacian Lines of a point cloud based on local reconstruction using the Delaunay triangulation.
2

Evaluación estructural del Museo de Sitio Bodega y Quadra ante un evento sísmico severo

Anampa Vilcas, Oscar Alonso, Loyola Carranza, Lucia Isabel January 2015 (has links)
El Museo de Sitio Bodega y Quadra es el primer museo de sitio del Centro Histórico que muestra detalles del estilo de vida en la Lima antigua. Declarada Patrimonio Cultural Inmueble Colonial por el INC, actual Ministerio de Cultura; es por ello que consideramos importante realizar la evaluación estructural del mismo ante un evento sísmico severo. Dicha evaluación se ha realizado mediante el programa “VisualFEA”, el cual se basa en la teoría de los elementos finitos, además se ha respetado la norma de diseño peruana y las consideraciones necesarias por ser, la estructura en estudio, un monumento histórico. La presente es una investigación aplicada, cuantitativa, explicativa y descriptiva; de diseño no experimental, transversal y prospectivo. Se concluye que la estructura no cumple los desplazamientos mínimos, según norma, al someterla al sismo severo; por lo que se procede a plantear la propuesta de reforzamiento estructural haciendo uso de las técnicas de reconstrucción local y refuerzo externo, evitando afectar la integridad y la autenticidad de los materiales por tratarse de un patrimonio cultural. The museum of site Bodega y Quadra is the first museum of the historic center which shows the old´s life style of lima citizen. It was named Cultural Heritage Colonial Property by the Ministerio de la Cultura; because of that reason we considered important to realize the structural assessment of this museum to prevent any problem in case of a severe earthquake. This thesis has been done using the “VisualFEA” software which is based on the theory of the finite elements, besides it has been considered the Peruvian regulation of design and the properly considerations since it is a Heritage Property. This is an applied, quantitative, descriptive and explanatory research; design not experimental, transversal and prospective. Concludes that the structure does not meet minimum displacement, as a rule, when subjected to sever earthquake; so it proceeds to raise the proposed structural reinforcement using the local reconstruction technique and external reinforcement, preventing affect the integrity and authenticity of the materials because it is a historical monument.

Page generated in 0.0297 seconds