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https://purl.org/pe-repo/ocde/ford#5.02.04
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1
artículo
Study the behavior of an elliptical problem is often very difficult due to the geometry of the domain and the boundary conditions, so it is necessary to use numerical methods to find a solution. The finiteelement method has proven to be efficient to treat problems of non-regular geometry and complicated parameters. This research has taken as reference the Poisson problem with mixed boundary conditions. It has proved the existence and uniqueness of a weak solution verifying the hypothesis Lax-Milgram theorem.The domain is discretized into triangular elements with three nodes and a degree of freedom per node and to discretize the differential equation has been used Galerkin method.
2
artículo
Study the behavior of an elliptical problem is often very difficult due to the geometry of the domain and the boundary conditions, so it is necessary to use numerical methods to find a solution. The finiteelement method has proven to be efficient to treat problems of non-regular geometry and complicated parameters. This research has taken as reference the Poisson problem with mixed boundary conditions. It has proved the existence and uniqueness of a weak solution verifying the hypothesis Lax-Milgram theorem.The domain is discretized into triangular elements with three nodes and a degree of freedom per node and to discretize the differential equation has been used Galerkin method.
3
artículo
Publicado 2021
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In this work, we propose the nonmonotone projected spectral gradient method to solve the problem of minimizing compliance of a static structure, classic problem in topology optimization. The present method has proof of global convergence and is easy to implement. The performance of the proposed method is studied through numerical examples in two dimensions.
4
tesis de maestría
Presenta aplicaciones de optimización topológica para problemas de valor propio, como frecuencia natural o carga de pandeo linealizada utilizando elementos finitos-poligonales en dominios bidimensionales. En este trabajo se presentan algunos aplicaciones de optimización de topología para problemas de valores propios donde el objetivo principal es maximizar un valor propio especificado, como una frecuencia natural o una carga de pandeo linealizada utilizando elementos finitos poligonales en dominios bidimensionales arbitrarios. La idea es obtener la distribución óptima del material para maximizar la frecuencia natural fundamental (por ejemplo, para mantenerla alejada de una frecuencia de excitación externa o para maximizar la frecuencia más baja) o maximizar la carga crítica de pandeo (por ejemplo, para asegurar un mayor nivel de estabilidad de las estructuras) sometiendo a una r...
5
artículo
Publicado 2005
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The behavior of the pressure of a fluid that filters through the wall of a dike, which is supposed to be made of a porous material, leads to the approach of a boundary problem that involves equations in partial derivatives under Dirichlet and Newman type conditions. ; at some borders while at another it is unknown, that is, it leads to a free border problem. For the case that the Irasversal section of the rectangular wall is considered, the problem is associated with a variational inequality and for non-rectangular flat sections, there is a free form problem associated with a quasivariational inequality. The study of the first case is resolved in reference [4]. In the present work we have considered the numerical study of the second case. To solve this problem, a mathematical treatment is made using the theory of duality. later; by calculating fixed-point iterations, such that in each it...
6
tesis doctoral
Publicado 2020
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También puede descargar la tesis en el repositorio institucional de la Pontifícia Universidade Católica do Rio de Janeiro: https://doi.org/10.17771/PUCRio.acad.49171
7
artículo
Publicado 2021
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Numerical methods are useful for solving differential equations that model physical problems, for example, heat transfer, fluid dynamics, wave propagation, among others; especially when these cannot be solved by means of exact analysis techniques, since such problems present complex geometries, boundary or initial conditions, or involve non-linear differential equations. Currently, the number of problems that are modeled with partial differential equations are diverse and these must be addressed numerically, so that the results obtained are more in line with reality. In this work, a comparison of the classical numerical methods such as: the finite difference method (FDM) and the finite element method (FEM), with a modern technique of discretization called the mimetic method (MIM), or mimetic finite difference method or compatible method, is approac...
8
artículo
Publicado 2002
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El presente trabajo desarrolla el Método de Elementos Finitos (MEE) mediante un programa en código MATLAB para la solución de problemas de guía de ondas. La ecuación diferencial de Helmholtz se resuelve mediante un sistema de eigenvalores de una forma simple con MATLAB. Los resultados numéricos son comparados con la solución analítica de guía de ondas rectangulares, obteniéndose resultados satisfactorios.
9
artículo
Publicado 2010
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The Knowledge, from the perspective of the Greeks, it has four types: Empeiria, tekhne, episteme and nous. These types have different characteristics, as they target the source dimension (facts and concepts), or the purpose dimension (contemplation or domain). On the basis of these dimensions is presented a tool kit to collect, develop and build personal strengths, arising from the disposition of knowledge itself. This tool allows to outline the productive potential of staff, from the perspective that the knowledge acquired, determines the disposition and development of ability to make decisions and solve problems. In the sample studied, it was noted that professionals have different susceptibility to the dimensions of knowledge, which leads to a different personal profi le for the resolution of problems. According to the predominant profi le, professionals are more focused on the analys...
10
artículo
Publicado 2010
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The Knowledge, from the perspective of the Greeks, it has four types: Empeiria, tekhne, episteme and nous. These types have different characteristics, as they target the source dimension (facts and concepts), or the purpose dimension (contemplation or domain). On the basis of these dimensions is presented a tool kit to collect, develop and build personal strengths, arising from the disposition of knowledge itself. This tool allows to outline the productive potential of staff, from the perspective that the knowledge acquired, determines the disposition and development of ability to make decisions and solve problems. In the sample studied, it was noted that professionals have different susceptibility to the dimensions of knowledge, which leads to a different personal profi le for the resolution of problems. According to the predominant profi le, professionals are more focused on the analys...
11
artículo
Publicado 2003
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The flow of a laminar fluid that filters through a porous medium is considered. This behavior leads to the formulation of a mathematical model that, through the Baiocchi transformation, allows it to be expressed as a free boundary problem. In this we wish to evaluate the pressure gradient of the fluid in the medium. The present work consists of the following: i) variational formulation of the problem il) study ofthe existence and uniqueness of the solution and iii) numerical resolution of the problem ofgenerated convex minimization. To find the numerical solution of the variational inequality, the Finite Element method and the Uzawa algorithm have been used.In the numerical simulation of the dam problem, the domain has been consideredof computational calculation, a rectangular IR geometry, assuming as known boundaries, the impermeable zone, the one in contact with the air and the one tha...
12
artículo
La Investigación en el área de la Ciencias de la Salud ha sido siempre un problema tabú, debido a su complejidad y al desconocimiento de sus métodos, lo cual Produce gran dificultad en su realización. Este articulo pretende brindar una orientación general en los Puntos básicos de la Investigación tales como la elección del Problema, el título, el marco teórico, la recolección y análisis de datos, resultados, discusión y publicación. Esperamos así incrementar la accesibilidad al tema, contribuyendo así a un mayor desarrollo académico en la investigación entre los médicos y otros Profesionales de la Salud.
13
artículo
Publicado 2021
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In order to investigate the conception of the Andean people about gnoseological problems, conceived from these categories: possibility of knowledge, elements that intervene in knowledge, process of knowledge, telos of knowledge and conception of truth. An ethnographic-hermeneutical method was used in the town of Rosaspata, Ayacucho District, Huamanga Province, Peru. The key informants were the yachaq (people who preserve the knowledge of the original peoples) authorities and elderly residents. It was evidenced that Andean people conceive knowledge as a process that begins in the sensory phase with the rikuy (see), the uyary (listen), accompanied by the ruray (praxis). It passes to the second phase of rational operations such as yachay (knowing), musyay (intuiting), and hamutay (reflection), in which true knowledge (chiqap) is acquired, as a correspondence between the knowable objec...
14
artículo
Publicado 2021
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In order to investigate the conception of the Andean people about gnoseological problems, conceived from these categories: possibility of knowledge, elements that intervene in knowledge, process of knowledge, telos of knowledge and conception of truth. An ethnographic-hermeneutical method was used in the town of Rosaspata, Ayacucho District, Huamanga Province, Peru. The key informants were the yachaq (people who preserve the knowledge of the original peoples) authorities and elderly residents. It was evidenced that Andean people conceive knowledge as a process that begins in the sensory phase with the rikuy (see), the uyary (listen), accompanied by the ruray (praxis). It passes to the second phase of rational operations such as yachay (knowing), musyay (intuiting), and hamutay (reflection), in which true knowledge (chiqap) is acquired, as a correspondence between the knowable objec...
15
artículo
Publicado 2023
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La tecnología, ahora convertida en mediación cultural, se ha vuelto transversal a la vida de las personas, configurando verdaderos “ecosistemas comunicativos” de la sociedad que posibilitan nuevos espacios de lucha y resistencia cultural y mediática. Es debido al auge de estas nuevas espacialidades que este trabajo se propone un acercamiento a las problemáticas que giran en torno al ejercicio de las nuevas ciudadanías digitales, haciendo especial énfasis en la apropiación tecnológica y las prácticas de activismo mediático como formas de resistencia; para, a partir de ello, presentar un repertorio de herramientas epistemológicas que contribuyan a describir y comprender acciones y experiencias del ejercicio ciudadano en entornos digitales.
16
artículo
Publicado 2020
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“The Part about the Crimes”, one of the five sections of Roberto Bolaño’s novel 2666, is the pretext to investigate on topics such as doubt and certainty, hand and industrial mechanization, corpses as real or spectral presences, or corpses as performatic elements, far from mimetic realism and novels of social protest. The specialized criticism only reads horror, fear, abjection, bodies as commodities and savage capitalism in this novel. On the contrary, I propose a reading that attempts to reconstruct a dialogue with the avant-garde and especially with the ready-mades by Marcel Duchamp.
17
Publicado 2021
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El objetivo de este trabajo es dar a conocer la presente investigación científica titulada: “Elementos de la psicolingüística”, nos brinda un decálogo sustancioso sobre la importancia de la adquisición, producción y comprensión del lenguaje y la gramática en la lengua castellana que sirve de base para los estudiantes del nivel inicial, primaria y secundaria. La mira del estudio de la lingüística es el idioma, haciendo referencia al estudio psíquico y social de la persona. Por ello, es una ciencia enfocada al estudio de todos los idiomas del mundo. Se difieren por dos planos muy significativos dentro del idioma: lengua y habla. El primero de los nombrados, se refiere a las aptitudes que tienen el individuo para comunicarse con su audiencia o interlocutores; el segundo, están conformados por signos lingüísticos proporcionados de un pueblo lingüístico. Así pues, el len...
18
Publicado 2021
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El objetivo de este trabajo de investigación es dar a conocer las teorías de los axiólogos más importantes a nivel mundial y el impacto de sus teorías. Así mismo y lo más inquietante, procuramos ingresar en la vanguardia de los personajes que guardan gran valor en su vida, y que además ha trascendido por los tiempos, tanto en el periodo clásico como el actual. Siendo necesario conocer a los filósofos a fin de conocer cuál es el enfoque de estudio más adecuado, consulté libros de primera fuente para recoger la información directa, precisa y detallada del mismo autor. Les presento el siguiente esquema a modo de introducción. En el primer capítulo consideramos a los axiólogos que presentaron su escala de valoración y otros aspectos: Max Scheler, Nicolai Hartmann, Risieri Frondizi, considerando sus aportes axiológicos. lose cuales están registrados en sus obras. En esta s...
19
artículo
The present work develops the Finite Element Method (FEM) as a program written in MATLAB code and its application for the numerical simulation of waveguides. The Helmholtz equationdiferential is determined by solving as the generalized eigenvalue problem and with MATLAB is simples. The numerical results is compared with the solution analitical of the rectangular waveguides, we obtained good results.
20
artículo
Publicado 2016
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It is often said that any activation of the constituent power, preceded by certain elements and conditions, is always a free activity limits or constraints, because it is so required by the democratic nature of the sovereign people that holds it. However, recent events show that the use of constitutionalism may be due, in some cases, a “non-constitutional” or “anti- democratic” interests or mobile, against which the classical theory of constituent power is usually warmly support the establishment of certain “internal” or “natural” limits. This article argues that an adequate defense of constitutionalism as a control to power might require the definition of other “controls” that are an expression of what people understand, at any given time, as a “exercised proper” constituent power, as well as the forecast of the agents who would be best placed to guarantee ...
