Results 101 to 110 of about 12,685 (261)

The Schwarz Alternating Sinc Domain Decomposition Method

, 1997
The overlapping sinc--collocation domain decomposition method combined with the Schwarz alternating technique is developed for two-point boundary-value problems for second-order ordinary differential equations with singularities.
Nancy J. Lybeck, Kenneth L. Bowers, Anne C. Morlet   +2 more
core  

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source

Consistent Quadratic Phase Formation in 3D Fast Spin Echo Using Frequency‐Modulated RF Pulses

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Frequency‐modulated (FM) RF pulses achieve broadband excitation with low RF peak power, which is required in MRI with inhomogeneous magnetic fields. However, the quadratic phase generated with FM pulses makes it difficult to use them in fast spin echo (FSE), because even and odd refocused echoes have different spatial phase profiles ...
Naoharu Kobayashi, Michael Garwood
wiley   +1 more source

Modified Sinc-Galerkin Method for Nonlinear Boundary Value Problems

Journal of Mathematics, 2013
This paper presents a modified Galerkin method based on sinc basis functions to numerically solve nonlinear boundary value problems. The modifications allow for the accurate approximation of the solution with accurate derivatives at the endpoints.
M. A. Hajji, Q. M. Al-Mdallal
doaj   +1 more source

Sinc-Galerkin method for approximate solutions of fractional order boundary value problems [PDF]

, 2013
In this paper we present an approximate solution of a fractional order two-point boundary value problem (FBVP). We use the sinc-Galerkin method that has almost not been employed for the fractional order differential equations.
Bayram, Mustafa, Akınlar, Mehmet Ali, Seçer, Aydın, Secer, Aydin, Akinlar, Mehmet Ali, Alkan, Sertan   +5 more
core   +1 more source

Concomitant Gradient Effects Across Field Strengths and Gradient Amplitudes: Improved Estimation of Errors and Correction of Concomitant Dephasing and Diffusion Weighting

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Deleterious effects from concomitant gradients are amplified at lower field strengths and stronger gradients. We aimed to show the signal errors caused by concomitant gradients across a wide range of hardware configurations and propose corrections that can be applied during experimental design and analysis.
Viktor Olsson, Felix Mortensen, Emil Ljungberg, Frederik Testud, Ronnie Wirestam, Malwina Molendowska, Filip Szczepankiewicz   +6 more
wiley   +1 more source

Numerical solution of singularly perturbed singular third order boundary value problems with nonclassical sinc method

Results in Applied Mathematics
In this paper, we employ a nonclassical sinc-collocation method to compute numerical solutions for singularly perturbed singular third-order boundary value problems prevalent in various scientific and engineering domains. Utilizing the sinc approximation
A. Alipanah, K. Mohammadi, R.M. Haji
doaj   +1 more source

Sinc numerical solution for solitons and solitary waves

, 2001
A numerical scheme using Sinc–Galerkin method is developed to approximate the solution for the Korteweg–de Vries model equation. Sinc approximation to both derivatives and indefinite integral reduce the integral equation to an explicit system of ...
Kamel Al-Khaled, Al-Khaled, Kamel
core   +1 more source

Transverse Relaxation Time Constant of Cystathionine in Human Glioma at 3 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Cystathionine (Cth) has emerged as a promising biomarker for identifying 1p/19q codeleted gliomas. However, little is known about the T2 relaxation time constant of Cth in gliomas. The aim of this study was to measure the T2 of Cth in vivo in glioma and compare it to the T2s of other metabolites at 3 T.
Dinesh K. Deelchand, Francesca Branzoli, Jamie D. Walls, Lucia Nichelli, Marc Sanson, Bertrand Mathon, Małgorzata Marjańska   +6 more
wiley   +1 more source

A Collocation Method for Numerical Solution of the Generalized Burgers-Huxley Equation

Walailak Journal of Science and Technology, 2013
In this paper, we use a collocation method to solve the Burgers-Huxley equation. To achieve this aim, we use mesh free technique based on sinc functions. The stability analysis is discussed. Some numerical examples are provided to illustrate the accuracy
Mohammad ZAREBNIA, Nastaran ALINIYA
doaj   +1 more source