Results 11 to 20 of about 4,993,210 (294)

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

Enhancing Accuracy of Runge–Kutta-Type Collocation Methods for Solving ODEs

open access: yesMathematics, 2021
In this paper, a new class of Runge–Kutta-type collocation methods for the numerical integration of ordinary differential equations (ODEs) is presented. Its derivation is based on the integral form of the differential equation.
Janez Urevc, Miroslav Halilovič
doaj   +1 more source

On Iterated Numerical Integration [PDF]

open access: yes, 2005
We revisit the iterated numerical integration method and show that it is extremely efficient in solving certain classes of problems. A multidimensional integral can be approximated by a combination of lower-dimensional or one-dimensional adaptive methods iteratively. When an integrand contains sharp ridges which are not parallel with any axis, iterated
Shujun Li   +2 more
openaire   +1 more source

On some quadrature rules with Gregory end corrections [PDF]

open access: yesOpuscula Mathematica, 2009
How can one compute the sum of an infinite series \(s := a_1 + a_2 + \ldots\)? If the series converges fast, i.e., if the term \(a_n\) tends to \(0\) fast, then we can use the known bounds on this convergence to estimate the desired sum by a finite sum \(
Bogusław Bożek   +2 more
doaj   +1 more source

Description of changes in genetic control in cells at their proliferation and differentiation

open access: yesБіологічні студії, 2014
On the basis of previously built kinetic model of changes in genetic controlling systems in cells at their proliferation and differentiation, it was held that these changes take place on gene, chromosome, membrane and ion levels.
I. V. Stadnyk, D. I. Sanagursky
doaj   +1 more source

Comparative Analysis of State-Space and Companion-Circuit Methodologies for the Periodic Steady-State Solution in Time-Domain of Nonlinear Electric Networks

open access: yesIEEE Access, 2021
This contribution reports a comparative analysis of two methodologies for the periodic steady-state solution of linear and nonlinear electric networks in time-domain (TD), based on the state-space model (SSM) and companion-circuit analysis (CCA ...
Julio Cesar Godinez-Delgado   +1 more
doaj   +1 more source

Reaction-Diffusion in the NEURON Simulator

open access: yesFrontiers in Neuroinformatics, 2013
In order to support research on the role of cell biological principles (genomics, proteomics, signaling cascades and reaction dynamics) on the dynamics of neuronal response in health and disease, NEURON has developed a Reaction-Diffusion (rxd) module in ...
Robert A. McDougal   +4 more
doaj   +1 more source

How Angular Velocity Features and Different Gyroscope Noise Types Interact and Determine Orientation Estimation Accuracy

open access: yesSensors, 2015
In human movement analysis, 3D body segment orientation can be obtained through the numerical integration of gyroscope signals. These signals, however, are affected by errors that, for the case of micro-electro-mechanical systems, are mainly due to ...
Ilaria Pasciuto   +5 more
doaj   +1 more source

Modified Gauss-Legendre, Lobatto and Radau cubature formulas for the numerical evaluation of 2-D singular integrals

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
A numerical technique, first reported in 1979 in refs.[1] and [2], for the numerical evaluation of two-dimensional Cauchy-type principal-value integrals, is extended in this paper to include several cubature formlas of the Radau and Lobatto types.
P. S. Theocaris
doaj   +1 more source

Evaluation of Static Potential Integrals on Triangular Domains

open access: yesIEEE Access, 2020
Static potential integrals for constant and linear sources on triangles are derived in a straightforward way. The new representations, as presented, are robust with respect to machine evaluation in important limiting cases.
Donald R. Wilton   +3 more
doaj   +1 more source

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