Results 31 to 40 of about 892,367 (145)

Convergence of a collocation scheme for a retarded potential integral equation [PDF]

open access: yes, 2003
Time domain boundary integral formulations of transient scattering problems involve retarded potential integral equations (RPIEs). Solving such equations numerically is both complicated and computationally intensive, and numerical methods often prove to ...
Duncan, D.B.
core   +3 more sources

Geometric Accuracy Analysis of Geostationary Environment Monitoring Spectrometer Images by Spatiotemporal and Spectral Collocation

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Geometric accuracy of satellite imagery is a critical factor that determines the reliability of image analysis. Geostationary environment monitoring spectrometer (GEMS) is the world's first geostationary hyperspectral environmental satellite ...
Seunghyeok Choi   +4 more
doaj   +1 more source

A Conservative Crank-Nicolson Fourier Spectral Method for the Space Fractional Schrödinger Equation with Wave Operators

open access: yesJournal of Function Spaces, 2021
In this paper, the Crank-Nicolson Fourier spectral method is proposed for solving the space fractional Schrödinger equation with wave operators. The equation is treated with the conserved Crank-Nicolson Fourier Galerkin method and the conserved Crank ...
Lei Zhang   +3 more
doaj   +1 more source

A generalized spectral collocation method with tunable accuracy for fractional differential equations with end-point singularities

open access: yes, 2017
We develop spectral collocation methods for fractional differential equations with variable order with two end-point singularities. Specifically, we derive three-term recurrence relations for both integrals and derivatives of the weighted Jacobi ...
George Em Karniadakis   +5 more
core   +1 more source

A spectral collocation method based on integrated Chebyshev polynomials for two-dimensional biharmonic boundary-value problems [PDF]

open access: yes, 2007
This paper reports a new spectral collocation method for numerically solving two-dimensional biharmonic boundary-value problems. The construction of the Chebyshev approximations is based on integration rather than conventional differentiation.
Tanner, Roger I.   +3 more
core   +1 more source

Space-time spectral collocation method for Allen-Cahn equation

open access: yes上海师范大学学报. 自然科学版, 2023
Allen-Cahn equation is an important phase field model, which has been widely used to investigate interfacial dynamic problems. In this paper, we propose a Legendre-Gauss spectral collocation scheme for the Allen-Cahn equation by using Legendre-Gauss ...
JIA Mengshu, XIE Shanshan, JIAO Yujian
doaj   +1 more source

A paired quasilinearization method for solving the MHD mixed convection flow of a micropolar fluid through a truncated cone in a non-Darcy porous medium [PDF]

open access: yesTheoretical and Applied Mechanics, 2019
The aim of this paper is to investigate the flow, heat and mass transfer through a truncated cone in a non-Darcy porous medium in the presence of a transverse magnetic field by considering chemical reaction and radiation effects where the fluid is ...
Ayano Mekonnen Shiferaw   +2 more
doaj   +1 more source

Supporting Collocation Learning [PDF]

open access: yes, 2010
Collocations are of great importance for second language learners. Knowledge of them plays a key role in producing language accurately and fluently. But such knowledge is difficult to acquire, simply because there is so much of it.
Shaoqun Wu, Wu, Shaoqun
core  

Fractional-Order Orthogonal Jacobi Function-Based Operational Approach for Multi-Term Diffusion-Wave Equations of Fractional Order

open access: yesFractal and Fractional
Solving fractional differential equations using spectral collocation methods based on classical orthogonal polynomials often leads to a reduced convergence rate due to the limited regularity of the solutions.
Amal Alshabanat   +3 more
doaj   +1 more source

An ultraspherical product integration-spectral collocation method for multidimensional partial Volterra integro-differential equations and its convergence analysis

open access: yesResults in Applied Mathematics
We present a reliable numerical method for solving multidimensional partial Volterra integro-differential equations (PVIDEs). This comprehensive approach integrates techniques from product integration, the Nyström method, and spectral collocation, all ...
Saman Bagherbana   +2 more
doaj   +1 more source

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