Results 221 to 230 of about 4,879 (265)

Numerical method based on conformal transformations for calculating resistances in integrated circuits

International Journal of Electronics, 1986
ABSTRACT In this work we present a procedure for calculating resistances in rectangles with two external contacts which is based on the Schwarz-Christoffel conformal transformation. The elliptic integrals and functions resulting from this transformation are calculated by means of polynomial and series expansion approximations, incorporated in a ...
M. GLEZ. HARBOUR, J. M. DRAKE
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Comparison among Several Numerical Integration Methods for Kramers-Kronig Transformation

Applied Spectroscopy, 1988
Several numerical integration methods are compared in order to search out the most effective method for the Kramers-Kronig transformation, using the analytical formula of the Kramers-Kronig transformation of a Lorentzian function as a reference. The methods to be compared involve the use of (1) Maclaurin's formula, (2) trapezium formula, (3) Simpson's ...
Koji Ohta, Hatsuo Ishida
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Recursive higher order fuzzy transform method for numerical solution of Volterra integral equation with singular and nonsingular kernels

Journal of Computational and Applied Mathematics, 2022
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Masoumeh Zeinali, Fariba Bahrami, Sedaghat Shahmorad   +2 more
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Fourier transform path integral method: numerical technique for scalar scattering in inhomogeneous regions

IEE Proceedings H Microwaves, Antennas and Propagation, 1993
The path integral can be described as a Green's function, although not in closed form, for Helmholtz equation in an inhomogeneous region. Here a straightforward heuristic derivation of the path integral is presented. The Fourier transform path integral method, a numerical technique applicable under scalar scattering conditions is also presented ...
R.D. Nevels, C. Huang, Z. Wu
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Slater‐orbital molecular integrals by numerical Fourier‐transform methods. II. Four‐center integrals over is orbitals

International Journal of Quantum Chemistry, 1980
AbstractThe four‐center nonplanar electron repulsion integrals over 1s Slater‐type atomic orbitals are considered by a numerical Fourier‐transform method. It is shown that the highly oscillating integrand appearing in the Fourier inversion formula could be successfully treated by using Tchebyscheff quadrature.
Ante Graovac, Krešimir Kovačević, Zvonimir B. Maksi, Ahmet Veseli   +3 more
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A comparative study of numerical steepest descent, extrapolation, and sequence transformation methods in computing semi-infinite integrals

Numerical Algorithms, 2012
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Richard M. Slevinsky, Hassan Safouhi
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A technique for increasing the accuracy of the FFT-based method of numerical inversion of Laplace transforms

Computers and Mathematics With Applications, 1994
The FFT-based methods of numerical inversion of Laplace transforms use the trapezoidal rule to the Bromwich integral. We present in this paper a technique for reducing the truncation error in evaluating the Bromwich integral.
Wu, Rong-Yuang, Hwang, Chyi, Lu, Ming-Jeng   +2 more
exaly   +2 more sources

The dimensional and numerical equivalence of the space-filling-curve approach and multi-dimensional integration methods for integral-transform trial functions

Chemical Physics Letters, 1972
Abstract The pseudo-one-dimensional space-filling-curve approach of Rosenthal is shown to be dimensionally and numerically equivalent to explicitly multi-dimensional integration methods. However, other considerations render it computationally less attractive to apply.
R.L. Somorjai, J.D. Power
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Nyström-quasilinearization method and smoothing transformation for the numerical solution of nonlinear weakly singular Fredholm integral equations

Journal of Computational and Applied Mathematics, 2020
This paper introduces and analyzes a numerical solution method for nonlinear weakly singular Fredholm integral equations of the second kind. Under some mild conditions, a quasilinearization technique gives a sequence of linear integral equations whose solutions are quadratically convergent to the unique solution of the nonlinear equation.
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Distance transformation for the numerical evaluation of near singular boundary integrals with various kernels in boundary element method

Engineering Analysis with Boundary Elements, 2002
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Ma, Hang, Kamiya, Norio
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