Results 11 to 20 of about 6,054,073 (251)

Numerical quadrature methods for singular and nearly singular integrals [PDF]

open access: yes, 2001
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis is concerned with the development, design, and analysis of simple and efficient numerical quadrature methods for integrals on finite intervals ...
Chunrungsikul, Sumlearng
core   +7 more sources

Distinctive Shape Functions of Fractional Differential Quadrature for Solving Two-Dimensional Space Fractional Diffusion Problems

open access: yesFractal and Fractional, 2023
The aim of this study is to utilize a differential quadrature method with various kernels, such as Lagrange interpolation and discrete singular convolution, to tackle problems related to the Riesz fractional diffusion equation and the Riesz fractional ...
Abdelfattah Mustafa   +4 more
doaj   +1 more source

Quadrature Integration Techniques for Random Hyperbolic PDE Problems

open access: yesMathematics, 2021
In this paper, we consider random hyperbolic partial differential equation (PDE) problems following the mean square approach and Laplace transform technique. Randomness requires not only the computation of the approximating stochastic processes, but also
Rafael Company   +2 more
doaj   +1 more source

Hyperbolic B-Spline Function-Based Differential Quadrature Method for the Approximation of 3D Wave Equations

open access: yesAxioms, 2022
We propose a differential quadrature method (DQM) based on cubic hyperbolic B-spline basis functions for computing 3D wave equations. This method converts the problem into a system of ODEs.
Mohammad Tamsir   +2 more
doaj   +1 more source

Numerical study of generalized 2-D nonlinear Benjamin–Bona–Mahony–Burgers equation using modified cubic B-spline differential quadrature method

open access: yesAlexandria Engineering Journal, 2023
The objective of this work is to present the modified cubic B-spline differential quadrature (MCBSDQ) method for the numerical study of the generalized 2-D nonlinear Benjamin–Bona–Mahony–Burgers (BBMB) equation.
Pratibha Joshi, Maheshwar Pathak, Ji Lin
doaj   +1 more source

A Composite Algorithm for Numerical Solutions of Two-Dimensional Coupled Burgers’ Equations

open access: yesJournal of Mathematics, 2021
In this study, a new composite algorithm with the help of the finite difference and the modified cubic trigonometric B-spline differential quadrature method is developed.
Vikas Kumar   +2 more
doaj   +1 more source

0.5 V Universal Filter and Quadrature Oscillator Based on Multiple-Input DDTA

open access: yesIEEE Access, 2023
This paper presents a universal voltage-mode filter and quadrature oscillator based on low-voltage multiple-input differential difference transconductance amplifier (MI-DDTA).
Montree Kumngern   +2 more
doaj   +1 more source

Generalized Differential Quadrature Finite Element Method applied to Advanced Structural Mechanics [PDF]

open access: yes, 2013
Over the years the Differential Quadrature (DQ) method has distinguished because of its high accuracy, straightforward implementation and general ap- plication to a variety of problems.
Fantuzzi, Nicholas <1984>
core   +1 more source

Vibration Analysis of Piezoelectric Composite Plate Resting on Nonlinear Elastic Foundations Using Sinc and Discrete Singular Convolution Differential Quadrature Techniques [PDF]

open access: yesMathematical Problems in Engineering, 2020
In this work, free vibration of the piezoelectric composite plate resting on nonlinear elastic foundations is examined. The three-dimensionality of elasticity theory and piezoelectricity is used to derive the governing equation of motion. By implementing two differential quadrature schemes and applying different boundary conditions, the problem is ...
Ola Ragb   +3 more
openaire   +1 more source

One step multiderivative methods for first order ordinary differential equations [PDF]

open access: yes, 1981
A family of one-step multiderivative methods based on Padé approximants to the exponential function is developed. The methods are extrapolated and analysed for use in PECE mode.
Khaliq, AQM, Twizell, EH
core   +5 more sources

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