Results 21 to 30 of about 25,857 (298)

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

Journal 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

European 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, Pirri, C, De Caro, R, Raghavan, P   +3 more
openaire   +4 more sources

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

Journal 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, Olusheye Akinfenwa, Olaoluwa Yusuff, Osaretin Enobabor, Solomon Okunuga   +4 more
doaj   +1 more source

Krylov SSP Integrating Factor Runge–Kutta WENO Methods

Mathematics, 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

UMYU 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, Hamisu Musa, Abasi Naghmeh   +2 more
doaj   +1 more source

A comparison of stiff ODE solvers for atmospheric chemistry problems [PDF]

, 1995
In the operator splitting solution of atmospheric transport-chemistry problems modeling air pollution, a major task is the numerical integration of the stiff ODE systems describing the chemical transformations.
Loon, Martin, Blom, Joke, Spee, Edwin, Verwer, Jan   +3 more
core   +1 more source

Exponential Multistep Methods for Stiff Delay Differential Equations

Axioms, 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, Weihong Chen, Xinji Chen, Runjie Zhang   +3 more
doaj   +1 more source

Explicit Stabilized Integrators for Stiff Optimal Control Problems

SIAM Journal on Scientific Computing, 2021
23 ...
Ibrahim Almuslimani, Gilles Vilmart
openaire   +5 more sources

Weighted Iterative Operator-Splitting Methods for stiff problems and applications [PDF]

, 2006
In this paper we describe advanced operator-splitting methods for more accurate and exact decoupling of stiff systems. We deal with stiff operators and contribute for both stiff operators a new weighted iterative operator-splitting method.
Kravvaritis, Christos, Geiser, Jürgen
core   +1 more source

Explicit Stabilized Methods for Stiff Stochastic Differential Equations and Stiff Optimal Control Problems

, 2020
Explicit stabilized methods are an efficient and powerful alternative to implicit schemes for the time integration of stiff systems of differential equations in large dimensions.
Almuslimani, Ibrahim
core   +1 more source