Results 21 to 30 of about 4,827,245 (289)

Block Third Derivative Trigonometrically-Fitted Methods for Stiff and Periodic Problems

open access: yesJournal of Nigerian Society of Physical Sciences, 2020
This article constructed and implemented a family of a third derivative trigonometric fitted method of order k+3 whose coefficients are functions of frequency and step size for the integration of systems of first-order stiff and periodic Initial Value ...
Ridwanulahi Abdulganiy   +4 more
doaj   +1 more source

A-Stable High Order Hybrid Linear Multistep Methods for Stiff Problems

open access: yesJournal of Algorithms & Computational Technology, 2014
This paper considers a new class of high order hybrid linear multistep methods for the numerical solution of stiff initial value problems (IVPs) in ordinary differential equations (ODEs).
R. I. Okuonghae
doaj   +1 more source

Stiffness and echogenicity: Development of a stiffness-echogenicity matrix for clinical problem solving

open access: yesEuropean Journal of Translational Myology, 2019
The assessment of soft tissue stiffness is important to evaluate many neuromusculoskeletal conditions. Several tools have been proposed for the assessment of stiffness, but ultrasonography appears to be most practical. The reflection of ultrasound waves as it travels through tissue enables assessment of tissue echogenicity, which is influenced by the ...
Stecco, A   +3 more
openaire   +4 more sources

Defect correction techniques for stiff initial value problems

open access: yes, 2003
In the talk given by W.Auzinger it is shown that certain modified defect correction algorithms based on techniques like defect interpolation (IPDeC) and defect quadrature (IQDeC) enable the efficient iterative realization of superconvergent collocation ...
Hofstätter, Harald   +3 more
core   +4 more sources

Krylov SSP Integrating Factor Runge–Kutta WENO Methods

open access: yesMathematics, 2021
Weighted essentially non-oscillatory (WENO) methods are especially efficient for numerically solving nonlinear hyperbolic equations. In order to achieve strong stability and large time-steps, strong stability preserving (SSP) integrating factor (IF ...
Shanqin Chen
doaj   +1 more source

Convergence and Order of the 2-Point Diagonally Implicit Block Backward Differentiation Formula with Two Off-Step Points

open access: yesUMYU Scientifica Journal, 2022
The development and formulation of a most reliable and efficient numerical schemes for the integration of stiff systems of ordinary differential equations in terms of order, convergence, stability requirements, accuracy, and computational expense has ...
Buhari Alhassan   +2 more
doaj   +1 more source

Stability regions for one-step multiderivative methods [PDF]

open access: yes, 1981
Stability regions are plotted for certain members of a family of one-step multiderivative predictor-corrector methods developed by the authors in an earlier paper.
Khaliq, AQM, Twizell, EH
core   +6 more sources

A new type OF hybrid multistep multiderivative formula for solving stiff IVPs

open access: yesAdvances in Difference Equations, 2019
We present a new class of higher-order multistep multiderivative methods for the numerical solution of stiff initial value problems. These methods are obtained based on free parameters and off-point. The methods have minimum error bounds. The constructed
P. Agarwal, Iman H. Ibrahim
doaj   +1 more source

Exponential Multistep Methods for Stiff Delay Differential Equations

open access: yesAxioms, 2022
Stiff delay differential equations are frequently utilized in practice, but their numerical simulations are difficult due to the complicated interaction between the stiff and delay terms.
Rui Zhan   +3 more
doaj   +1 more source

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