Results 41 to 50 of about 59,441 (292)

A Meshfree Collocation Scheme for Surface Differential Operators on Point Clouds

open access: yesJournal of Scientific Computing, 2023
AbstractWe present a meshfree collocation scheme to discretize intrinsic surface differential operators over scalar fields on smooth curved surfaces with given normal vectors and a non-intersecting tubular neighborhood. The method is based on discretization-corrected particle strength exchange (DC-PSE), which generalizes finite difference methods to ...
Abhinav Singh   +3 more
openaire   +3 more sources

A numerical method for solving systems of higher order linear functional differential equations

open access: yesOpen Physics, 2016
Functional differential equations have importance in many areas of science such as mathematical physics. These systems are difficult to solve analytically.In this paper we consider the systems of linear functional differential equations [1-9] including ...
Yüzbasi Suayip   +2 more
doaj   +1 more source

Optimal Collocation Nodes for Fractional Derivative Operators [PDF]

open access: yes, 2014
Spectral discretizations of fractional derivative operators are examined, where the approximation basis is related to the set of Jacobi polynomials. The pseudo-spectral method is implemented by assuming that the grid, used to represent the function to be
Fatone, Lorella, Funaro, Daniele
core   +3 more sources

The Conical Radial Basis Function for Partial Differential Equations

open access: yesJournal of Mathematics, 2020
The performance of the parameter-free conical radial basis functions accompanied with the Chebyshev node generation is investigated for the solution of boundary value problems.
J. Zhang, F. Z. Wang, E. R. Hou
doaj   +1 more source

Solving the Lane–Emden equation by using Bernstein operational matrix

open access: yesAlexandria Engineering Journal
Lane–Emden equations model a wide range of problems in physics and astrophysics, with applications including stellar structure, radiative cooling, and the modeling of galaxy clusters.
Nurul Izzatie Najwa Kamarul Bahrim   +1 more
doaj   +1 more source

Approximating Solutions of Non-Linear Troesch’s Problem via an Efficient Quasi-Linearization Bessel Approach

open access: yesMathematics, 2021
Two collocation-based methods utilizing the novel Bessel polynomials (with positive coefficients) are developed for solving the non-linear Troesch’s problem.
Mohammad Izadi   +2 more
doaj   +1 more source

Galerkin and Runge–Kutta methods: unified formulation, a posteriori error estimates and nodal superconvergence [PDF]

open access: yes, 2011
. We unify the formulation and analysis of Galerkin and Runge–Kutta methods for the time discretization of parabolic equations. This, together with the concept of reconstruction of the approximate solutions, allows us to establish a posteriori ...
A. Lozinski   +21 more
core   +5 more sources

Harnessing the Orientation of Columnar Discotic Liquid Crystals for Narrowband Blue Emission with Enhanced Out‐Coupling Efficiency Toward Improvement of SP‐OLEDs Performance

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐processed OLEDs containing discotic liquid‐crystalline MR‐TADF emitters are reported. Supramolecular self‐assembly induces homeotropic columnar alignment, enforcing preferential horizontal orientation of the emitter transition dipole moment in spin‐coated films, which leads to an enhancement in the device light outcoupling efficiency while ...
Joydip De   +6 more
wiley   +1 more source

IG-LSPIA: Least Squares Progressive Iterative Approximation for Isogeometric Collocation Method

open access: yesMathematics, 2023
The isogeometric collocation method (IGA-C), which is a promising branch of isogeometric analysis (IGA), can be considered fitting the load function with the combination of the numerical solution and its derivatives.
Yini Jiang, Hongwei Lin
doaj   +1 more source

The three-dimensional beam theory: Finite element formulation based on curvature [PDF]

open access: yes, 2003
article introduces a new finite element formulation of the three-dimensional `geometrically exact finite-strain beam theory'. The formulation employs the generalized virtual work principle with the pseudo-curvature vector as the only unknown function ...
Saje, Miran, Zupan, Dejan
core   +1 more source

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