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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

Conjugação de involuções e suas aplicações / Conjugation of involutions and their applications

Flores, Elizabeth Ruth Salazar 15 May 2013 (has links)
Este trabalho propõe direcionar o estudo de involuções para dois ramos de pesquisa dentro da teoria das Singularidades e de Sistemas Dinâmicos. Mais precisamente, tratamos sua interligação com diagramas divergentes de dobras e seu aparecimento nos sistemas dinâmicos discretos reversíveis. No primeiro, tratamos da importante relação entre a classificação de diagramas divergentes de dobras, digamos de s dobras, e a classificação de s-uplas de involuções associadas a estes diagramas. No segundo contexto, o estudo se volta para a questão sobre condições para a linearização simultânea de uma classe de pares de involuções e a obtenção de formas normais desses pares / This work proposes to address the study of involutions for two branches of research into the theory of Singularities and Dynamical Systems. More precisely, we treat its interconnection with divergent diagrams of folds and their appearance in discrete reversible dynamical systems. First, we treat the important relationship between the classification of divergent diagrams of folds, say s folds, and the classification of s-tuples of involutions associated with these diagrams. In the second context, the study turns to the question of conditions for simultaneous linearization of a class of pairs of involutions and the deduction of the normal forms of these pairs
2

Determinación del esfuerzo de preconsolidación para el cálculo de asentamiento de suelos finos de la zona de Sagari – Cuzco

Alvarado Mejía, Lincoln Yoel, Palomino Benites, Sheylla Anna January 2015 (has links)
El motivo de la presente investigación parte a raíz de cimentar estructuras en un suelo arcilloso, para lo cual nos enfocaremos en el principal problema del suelo que es enfrentar y evitar que se produzcan asentamientos de gran magnitud que puedan dañar la estructura de manera que dificulte o afecte sus funciones. Ante este problema, la presente investigación tiene como propósito identificar y describir las características físicas del suelo fino de la zona de Sagari – Cuzco, con el fin de determinar del suelo en mención, el esfuerzo de Preconsolidación, asentamiento y tiempo de consolidación. Con estos parámetros obtenidos podremos tomar las medidas correctivas antes de cimentar en la zona en mención. Mediante los ensayos de laboratorio pertinentes se pudo obtener las características físicas del suelo en estudio; asimismo mediante método de grafico de Casagrande, se puedo determinar el esfuerzo de Preconsolidación del suelo; por otro lado, mediante el método de Taylor podremos conocer la velocidad que demorará en suelo en estar totalmente consolidado. En resumen mediante los ensayos de compresibilidad realizados se pudo conocer que el suelo evaluado se encuentra en la condición de normalmente consolidado; asimismo, de acuerdo a las 04 muestras obtenidas en los distintos puntos de la zona, pudimos observar que el comportamiento y características de todas las muestras son similares en toda la área de estudio, por tanto podemos concluir que en área estudiada tiene un suelo homogéneo a lo largo de toda su extensión. Por tal motivo, para los asentamientos obtenidos en las muestras ensayadas, se propone una solución económica que consiste en la construcción de un terraplén en el emplazamiento previsto, con el propósito de que el terreno blando pueda llegar su estado de totalmente consolidado. The reason for this investigation partly because of cement structures in clay soil, for which we will focus on the main problem that is confronting soil and prevent large-scale settlements that could damage the structure so that difficult or occur affecting their functions. Faced with this problem, this research aims to identify and describe the physical characteristics of fine soil in the area of Sagari - Cuzco, in order to determine the soil in question, the pre-consolidation effort, settlement and consolidation time. With these parameters obtained we can take corrective action before cementing in the area in question. By appropriate laboratory tests were able to obtain the physical characteristics of the soil under study; also by Casagrande method chart it is I can determine the soil preconsolidation effort; on the other hand, by the method of Taylor we know the speed it will take to be fully consolidated soil. In short compressibility by the tests we conducted it was known that the soil is evaluated in the condition of normally consolidated; Also, according to the 04 samples taken at various points in the area, we found that the behavior and characteristics of all samples are similar throughout the study area, so we can conclude that in the study area has a homogeneous soil along its entire length. Therefore, for the settlements obtained in the samples tested, an economical solution that involves the construction of an embankment on the intended location, in order that the soft ground can reach its fully funded status it is proposed.
3

Conjugação de involuções e suas aplicações / Conjugation of involutions and their applications

Elizabeth Ruth Salazar Flores 15 May 2013 (has links)
Este trabalho propõe direcionar o estudo de involuções para dois ramos de pesquisa dentro da teoria das Singularidades e de Sistemas Dinâmicos. Mais precisamente, tratamos sua interligação com diagramas divergentes de dobras e seu aparecimento nos sistemas dinâmicos discretos reversíveis. No primeiro, tratamos da importante relação entre a classificação de diagramas divergentes de dobras, digamos de s dobras, e a classificação de s-uplas de involuções associadas a estes diagramas. No segundo contexto, o estudo se volta para a questão sobre condições para a linearização simultânea de uma classe de pares de involuções e a obtenção de formas normais desses pares / This work proposes to address the study of involutions for two branches of research into the theory of Singularities and Dynamical Systems. More precisely, we treat its interconnection with divergent diagrams of folds and their appearance in discrete reversible dynamical systems. First, we treat the important relationship between the classification of divergent diagrams of folds, say s folds, and the classification of s-tuples of involutions associated with these diagrams. In the second context, the study turns to the question of conditions for simultaneous linearization of a class of pairs of involutions and the deduction of the normal forms of these pairs

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