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Listar por palabra clave "Differential equations"

Mostrando ítems 1-20 de 28

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A comparative study to the numerical approximation of random Airy differential equation

Cortés López, Juan Carlos; Jódar Sánchez, Lucas Antonio; Romero Bauset, José Vicente; Roselló Ferragud, María Dolores (Elsevier, 2011-11)

The aim of this paper is twofold. First, we deal with the extension to the random framework of the piecewise Fröbenius method to solve Airy differential equations. This extension is based on mean square stochastic calculus. ...
A Lyapunov inequality for a second order nonlinear differential equation

Almenar, P.; Jódar Sánchez, Lucas Antonio (Elsevier, 2011-04)

This paper presents a Lyapunov-type inequality for the second order nonlinear equation (r(x)y')' + p(x)f(y(x)) = 0, with r(x), p(x) > 0 and f(y) odd and positive for y > O. It also compares it with similar results. (C) ...
Analysis of Oscillations in a Cableway: Wind Load Effects

Gustincic, Jan; Garcia-Raffi, Lluís M. (Universitat Politècnica de València, 2013-06-02)

[EN] The purpose of this paper is to develop and investigate a non-linear model for analysing the reaction of a self-detachable cabin monocable ropeway exposed to a sudden deceleration and wind forces. The First and Second ...
Analytic-numerical solution of random boundary value heat problems in a semi-infinite bar

Casabán Bartual, Mª Consuelo; Cortés López, Juan Carlos; García Mora, María Belén; Jódar Sánchez, Lucas Antonio (Hindawi Publishing Corporation, 2013)

[EN] This paper deals with the analytic-numerical solution of random heat problems for the temperature distribution in a semi-infinite bar with different boundary value conditions. We apply a random Fourier sine and cosine ...
Aprovechamiento del paralelismo de tareas en factorizaciones de matrices jerárquicas sobre procesadores multinúcleo

Carratalá Sáez, Rocío (Universitat Politècnica de València, 2016-09-02)

[EN] Hierarchical matrices are a numerical tool for representing, in a sparse way and in a linear-logarithmic storage cost, dense problems that arise in integral and partial differential equations. For some basic linear ...
Asymptotic behaviour of the solutions of second order functional differential equations

Almenar, Pedro; Jódar Sánchez, Lucas Antonio (Elsevier, 2011-07)

This paper presents integral criteria to determine the asymptotic behaviour of the solutions of second order nonlinear differential equations of the type y¿(x)+q(x)f(y(x))=0, with q(x)>0 and f(y) odd and positive for y>0, ...
Autumn School Mathematical Modeling – a cooperation between ZFM and TUDa

Kiehl, Martin (Universitat Politècnica de València, 2022-01-29)

[EN] Since 2000 the Zentrum f¨ur Mathematik in Bensheim (ZFM) and the Technical University Darmstadt (TUDa) have organized an annual autumn school for mathematically highly talented pupils in their last year of school. For ...
Conjunto de alcanzabilidad de un sistema mecánico controlable y condiciones de estabilidad robusta

Temoltzi-Ávila, R.; Ávila-Pozos, R (Universitat Politècnica de València, 2020-07-01)

[ES] Como aplicación de la solución del problema sobre la variación máxima de las amplitudes de oscilación de las soluciones de un sistema de ecuaciones diferenciales con una perturbación externa, el cual describe la ...
Dealing with dependent uncertainty in modelling : a comparative study case through the airy equation

Cortés López, Juan Carlos; Romero Bauset, José Vicente; Roselló Ferragud, María Dolores; Villanueva Micó, Rafael Jacinto (Hindawi Publishing Corporation, 2013)

The consideration of uncertainty in differential equations leads to the emergent area of random differential equations. Under this approach, inputs become random variables and/or stochastic processes. Often one assumes ...
Desarrollo de un propagador orbital para estudiar la puesta en órbita de un satélite en el punto de Lagrange 5 del sistema Sol-Tierra

Clavijo Domínguez, Daniel (Universitat Politècnica de València, 2024-07-17)

[ES] En este proyecto, se emplean métodos numéricos para resolver las ecuaciones diferenciales de la mecánica orbital con el fin de desarrollar un propagador orbital en Wolfram Mathematica, que permite describir la puesta ...
Determining the first probability density function of linear random initial value problems by the Random Variable Transformation (RVT) technique: A comprehensive study

Casabán Bartual, Mª Consuelo; Cortés López, Juan Carlos; Romero Bauset, José Vicente; Roselló Ferragud, María Dolores (Hindawi Publishing Corporation, 2014)

Deterministic differential equations are useful tools for mathematical modelling. The consideration of uncertainty into their formulation leads to random differential equations. Solving a random differential equation means ...
Drazin inverse based numerical methods for singular linear differential systems

Coll Aliaga, Peregrina del Carmen; Ginestar Peiro, Damián; Sánchez Juan, Elena; Thome Coppo, Néstor Javier (ELSEVIER SCI LTD, 2012)

[EN] In this paper, numerical methods for the solution of linear singular differential system are analyzed. The numerical solution of initial value problem by means of a corresponding finite difference approach and a ...
Dynamics of strongly continuous semigroups associated to certain differential equations

Aroza Benlloch, Javier (Universitat Politècnica de València, 2015-11-09)

[EN] The purpose of the Ph.D. Thesis "Dynamics of strongly continuous semigroups associated to certain differential equations'' is to analyse, from the point of view of functional analysis, the dynamics of solutions of ...
Efficient orthogonal matrix polynomial based method for computing matrix exponential

Sastre, Jorge; Ibáñez González, Jacinto Javier; Defez Candel, Emilio; Ruiz Martínez, Pedro Antonio (Elsevier, 2011-03-15)

The matrix exponential plays a fundamental role in the solution of differential systems which appear in different science fields. This paper presents an efficient method for computing matrix exponentials based on Hermite ...
epiModel: A system to build automatically systems of differential equations of compartmental type-epidemiological models

Cortés López, Juan Carlos; Sánchez-Sánchez, Almudena; Santonja, Francisco; Villanueva Micó, Rafael Jacinto (Elsevier, 2011-11)

In this paper we describe epiModel, a code developed in Mathematica that facilitates the building of systems of differential equations corresponding to type-epidemiological linear or quadratic models whose characteristics ...
Exact, integrated and complete solutions for composite flywheels

Pérez-Aparicio, José L.; Ripoll, L. (Elsevier, 2011)

An integrated general formulation for the analysis and design of flywheel rotors made out of composite material is developed. To have an accurate estimation of stresses in the rotor, all the effects present in the literature ...
Identifiability for a Class of Discretized Linear Partial Differential Algebraic Equations

Cantó Colomina, Begoña; Coll, Carmen; Sánchez, Elena (Hindawi Publishing Corporation, 2011)

This paper presents the use of an iteration method to solve the identifiability problem for a class of discretized linear partial differential algebraic equations. This technique consists in replacing the partial derivatives ...
Improving Results on Solvability of a Class of nth-Order Linear Boundary Value Problems

Almenar, Pedro; Jódar Sánchez, Lucas Antonio (Hindawi Publishing Corporation, 2016)

[EN] This paper presents a modification of a recursive method described in a previous paper of the authors, which yields necessary and sufficient conditions for the existence of solutions of a class of 𝑛�th-order linear ...
Magnus-based geometric integrators for dynamical systems with time-dependent potentials

Kopylov, Nikita (Universitat Politècnica de València, 2019-03-27)

[ES] Esta tesis trata sobre la integración numérica de sistemas hamiltonianos con potenciales explícitamente dependientes del tiempo. Los problemas de este tipo son comunes en la física matemática, porque provienen de la ...
Modelado de sistemas bioquímicos: De la Ley de Acción de Masas a la Aproximación Lineal del Ruido

Picó Marco, Jesús Andrés; Vignoni, Alejandro; Picó i Marco, Enric; Boada Acosta, Yadira Fernanda (Universitat Politècnica de València, 2015-07-10)

[EN] In the last decade we have witnessed a growing application of engineering techniques to biology. Areas such as Systems Biology or, more recently, Synthetic Biology, get more and more attention from the engineers. ...