Este trabajo presenta el análisis de deformación de las vigas a través del modelo definido en el intervalo...

Este trabajo presenta el análisis de deformación de las vigas a través del modelo definido en el intervalo...

Computed tomography (CT) is a breakthrough technology used in medicine for diagnostic diseases. The same technique is used in other areas, such as aerospace chemistry, Radio astronomy, etc. The main objective of the CT is to reconstruct the internal part of an object without having to open it as a non-destructive test. To achieve this purpose, the CT uses the attention that X-rays undergo through this object with the information, the inner part of the object is reconstructed, that is to say the CT is an inverse problem.In this article uses the Fourier transform for the reconstruction of the internal part, for it is directly part of a continuous model, representing the density at the point (x, y) of a section, with a function p = p(x, y); and even though p is not required to be continuous, the Fourier method is more efficient and a better, more regular result is obtained p.

La tomografía computarizada (TC) es un gran avance tecnológico utilizado en medicina para diagnósticar enfermedades. La misma técnica es usada en otras áreas, tales como química aeroespacial, radioastronomia, etc. El principal objetivo de la TC es reconstruir la parte interna de un objeto sin tener la necesidad de abrirlo, dicho procedimiento es conocido como un ensayo no destructivo. Para lograr este propósito, la TC usa la atenución que sufren los rayos X al atravesar por el objeto con dicha información, se reconstruye la parte interna del objeto, es decir la TC se trata de un problema inverso.En este artículo se utiliza con la transformada de Fourier para la reconstrucción de la parte interna, para ello se parte directamente de un modelo continuo, representando la densidad en el punto (x, y) de una sección considerada, con una función p = p(x, y); y aunque no se requiera ...

Our purpose is to analyze and to attain result in the classical numerical approximation schemes of the damped wave equation one-dimentional, with relation to exponential decay property of solutions and whether it is uniform with respect to the mesh size. We consider the finite-difference space semi-discretization of a locally damped wave equation. The decay rate of the semi-discrete systems turns out depend on the mesh size h goes to zero. We prove that adding a suitable vanishing numerical viscosity term leads to a uniform exponential decay of the energy of solutions.

Nuestro propósito es analizar y alcanzar resultados en esquemas de aproximación numérica clásica de la ecuación de onda unidimensional amortiguada, con relación a la propiedad de decaimiento exponencial de soluciones y determinar si es uniforme con respecto al tamaño de paso de la correspondiente semidiscretización. Consideramos el espacio de semidiscretización en diferencias finitas de una ecuación de onda localmente amortiguado. La razón de decaimiento del sistema semidiscreto resulta depender del tamaño de paso h de la discretización y tiende a cero cuando h va a cero. Probaremos que adicionando un adecuado término de viscosidad numérica, se puede lograr un decaimiento exponencial uniforme de la energía de las soluciones.

Computed tomography (CT) is one of the major technological advances used in medicine to diagnose diseases, but it is also a technique used in other areas, such as eroespacial chemistry, radio astronomy, etc.. The goal of CT is to reconstruct the inside of an object without the need to open it, this process is known a nondestructive testing. To achieve this purpose, the TC uses suffering atenución X-rays to go through said object with said internal information of the object is reconstructed, this is an inverse problem. We got out of the theory and we focus on the practice showing concretely how the inside of an object using an algebraic method known as algebraic reconstruction for a specific event is reconstructed.

Computed tomography (CT) is one of the major technological advances used in medicine to diagnose diseases, but it is also a technique used in other areas, such as eroespacial chemistry, radio astronomy, etc.. The goal of CT is to reconstruct the inside of an object without the need to open it, this process is known a nondestructive testing. To achieve this purpose, the TC uses suffering atenución X-rays to go through said object with said internal information of the object is reconstructed, this is an inverse problem. We got out of the theory and we focus on the practice showing concretely how the inside of an object using an algebraic method known as algebraic reconstruction for a specific event is reconstructed.