Results 31 to 40 of about 71,460,248 (256)

Efficient numerical methods for Volterra integral equations of Hammerstein type [PDF]

open access: yes, 2006
Volterra integral equations (VIEs) are the mathematical model of many evolutionary problems with memory arising from biology, chemistry, physics, engineering.
Del Prete, Ida
core   +1 more source

On the Convolution Quadrature Rule for Integral Transforms with Oscillatory Bessel Kernels [PDF]

open access: yesSymmetry, 2018
Lubich’s convolution quadrature rule provides efficient approximations to integrals with special kernels. Particularly, when it is applied to computing highly oscillatory integrals, numerical tests show it does not suffer from fast oscillation. This paper is devoted to studying the convergence property of the convolution quadrature rule for highly ...
Junjie Ma 0003, Huilan Liu
openaire   +2 more sources

Precise two-dimensional D-bar reconstructions of human chest and phantom tank via sinc-convolution algorithm

open access: yesBioMedical Engineering OnLine, 2012
Background Electrical Impedance Tomography (EIT) is used as a fast clinical imaging technique for monitoring the health of the human organs such as lungs, heart, brain and breast.
Abbasi Mahdi, Naghsh-Nilchi Ahmad-Reza
doaj   +1 more source

Thermoelastic Diffusion Multicomponent Half-Space under the Effect of Surface and Bulk Unsteady Perturbations

open access: yesMathematical and Computational Applications, 2019
This article presents an algorithm for solving the unsteady problem of one-dimensional coupled thermoelastic diffusion perturbations propagation in a multicomponent isotropic half-space, as a result of surface and bulk external effects.
Sergey A. Davydov   +2 more
doaj   +1 more source

GENERALIZED CONDITIONAL INTEGRAL TRANSFORMS, CONDITIONAL CONVOLUTIONS AND FIRST VARIATIONS [PDF]

open access: yesKorean Journal of Mathematics, 2012
Summary: We study various relationships that exist among generalized conditional integral transform, generalized conditional convolution and generalized first variation for a class of functionals defined on \(K[0, T]\), the space of complex-valued continuous functions on \([0, T]\) which vanish at zero.
Kim, Bong Jin, Kim, Byoung Soo
openaire   +1 more source

A Coiflets-Based Wavelet Laplace Method for Solving the Riccati Differential Equations

open access: yesJournal of Applied Mathematics, 2014
A wavelet iterative method based on a numerical integration by using the Coiflets orthogonal wavelets for a nonlinear fractional differential equation is proposed.
Xiaomin Wang
doaj   +1 more source

A comparative analysis of preprocessing techniques of cardiac event series for the study of heart rhythm variability using simulated signals

open access: yesBrazilian Journal of Medical and Biological Research, 1998
In the present study, using noise-free simulated signals, we performed a comparative examination of several preprocessing techniques that are used to transform the cardiac event series in a regularly sampled time series, appropriate for spectral analysis
H.N. Guimarães, R.A.S. Santos
doaj   +1 more source

On the generalized convolution for F c , F s , and K–L integral transforms [PDF]

open access: yesUkrainian Mathematical Journal, 2012
New generalized noncommutative convolutions with weight function \(\gamma(y) = y\) are introduced on the spaces \(L^1(\mathbb R_+, x^\alpha e^{-\beta x}).\) They satisfy the usual factorization equalities with respect to various integral transforms (Fourier sine, Fourier cosine and Kontorovich-Lebedev). Several applications are listed.
Virchenko, N.O., Thao, N.X.
openaire   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Finite to infinite steady state solutions, bifurcations of an integro-differential equation [PDF]

open access: yes, 2011
We consider a bistable integral equation which governs the stationary solutions of a convolution model of solid–solid phase transitions on a circle. We study the bifurcations of the set of the stationary solutions as the diffusion coefficient is varied to ...
Duncan, D. B.   +3 more
core   +5 more sources

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