Results 11 to 20 of about 39,311 (153)

Vibration analysis of FG cylindrical shells with power-law index using discrete singular convolution technique

open access: yesCurved and Layered Structures, 2016
In the present manuscript, free vibration response of circular cylindrical shells with functionally graded material (FGM) is investigated. The method of discrete singular convolution (DSC) is used for numerical solution of the related governing equation ...
Mercan Kadir   +2 more
doaj   +2 more sources

Discrete singular convolution–polynomial chaos expansion method for free vibration analysis of non-uniform uncertain beams

open access: yesJournal of Vibration and Control, 2021
This article enhances the discrete singular convolution method for free vibration analysis of non-uniform thin beams with variability in their geometrical and material properties such as thickness, specific volume (inverse of density) and Young’s modulus.
A. Seçgin, M. Kara, N. Ferguson
semanticscholar   +1 more source

Sinc and discrete singular convolution for analysis of three‐layer composite of perovskite solar cell

open access: yesInternational Journal of Energy Research, 2021
This work studies the performance of composite solar cell model consisting of perovskite absorber layer (CH3NH3PbI3), electron transport layer (TiO2 or PCBM), and hole transport layer (Spiro‐OMeTAD or CuI) via sinc and discrete singular convolution ...
O. Ragb   +3 more
semanticscholar   +1 more source

Lower Bounds on the Bounded Coefficient Complexity of Bilinear Maps [PDF]

open access: yes, 2002
We prove lower bounds of order $n\log n$ for both the problem to multiply polynomials of degree $n$, and to divide polynomials with remainder, in the model of bounded coefficient arithmetic circuits over the complex numbers.
Buergisser, Peter, Lotz, Martin
core   +3 more sources

An Optimal Fourth-Order Finite Difference Scheme for the Helmholtz Equation Based on the Technique of Matched Interface Boundary

open access: yesDiscrete Dynamics in Nature and Society, 2021
In this paper, a new optimal fourth-order 21-point finite difference scheme is proposed to solve the 2D Helmholtz equation numerically, with the technique of matched interface boundary (MIB) utilized to treat boundary problems.
Dongsheng Cheng   +2 more
doaj   +1 more source

Deformable kernels for early vision [PDF]

open access: yes, 1995
Early vision algorithms often have a first stage of linear-filtering that `extracts' from the image information at multiple scales of resolution and multiple orientations.
Perona, Pietro
core   +1 more source

Discontinuous Galerkin method for an integro-differential equation modeling dynamic fractional order viscoelasticity [PDF]

open access: yes, 2015
An integro-differential equation, modeling dynamic fractional order viscoelasticity, with a Mittag-Leffler type convolution kernel is considered.
Larsson, Stig   +2 more
core   +2 more sources

Error Estimates for Approximations of Distributed Order Time Fractional Diffusion with Nonsmooth Data [PDF]

open access: yes, 2015
In this work, we consider the numerical solution of an initial boundary value problem for the distributed order time fractional diffusion equation. The model arises in the mathematical modeling of ultra-slow diffusion processes observed in some physical ...
Jin, Bangti   +3 more
core   +2 more sources

Removing the Stiffness of Elastic Force from the Immersed Boundary Method for the 2D Stokes Equations [PDF]

open access: yes, 2008
The Immersed Boundary method has evolved into one of the most useful computational methods in studying fluid structure interaction. On the other hand, the Immersed Boundary method is also known to suffer from a severe timestep stability restriction when ...
Hou, Thomas Y., Shi, Zuoqiang
core   +4 more sources

Free vibration analysis of annular sector plates via conical shell equations

open access: yesCurved and Layered Structures, 2017
In this paper, free vibration analysis of annular sector plates has been presented via conical shell equations. By using the first-order shear deformation theory (FSDT) equation of motion of conical shell is obtained.
Demir Çiğdem   +3 more
doaj   +1 more source

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