Results 251 to 260 of about 10,893 (284)

Numerical Differentiation, Quadrature and Interpolation

2004
A series of ef formulae tuned on functions of the form (3.38) or (3.39) are derived here by the procedure described in the previous chapter. We construct the ef coefficients for approximations of the first and the second derivative of y(x), for a set of quadrature rules, and for some simple interpolation formulae.
Liviu Gr. Ixaru, Guido Vanden Berghe
openaire   +1 more source

Differential phase quadrature surface profiling interferometer

Applied Optics, 1990
This paper describes an optical surface profiling system based on phase quadrature differential interferometry. The optical path difference between two adjacent optical probe beams is measured. Interference phase calculation and sample scanning is controlled by a PC computer.
B A, Omar, A J, Holloway, D C, Emmony
openaire   +2 more sources

Differential Equations Solvable by Quadrature

1992
By a differential equation with separable variables we understand the equation of the form $$y'{\text{ }} = {\text{ }}f(x)g(y)$$ (1)
Gheorghe Micula, Paraschiva Pavel
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Differential Quadrature for Reservoir Simulation

SPE Symposium on Reservoir Simulation, 1989
Abstract The application of the method of differential quadrature (Civan et al, 1984, 1988, 1988) is extended for efficient numerical solution of hydrocarbon reservoir models. This method approximates the partial derivatives by a sum of the discrete function values weighted according to a multi-dimensional polynomial.
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A differential quadrature algorithm for nonlinear Schrödinger equation

Nonlinear Dynamics, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Korkmaz, Alper, Dag, Idris
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Inverse Differential Quadrature Method

2.1 Introduction Problems in engineering are typically governed by a system of high-order differential equations subject to various constraints, typically at boundaries, which require efficient numerical methods to provide reliable solutions.
Saheed O. Ojo, Hasan M. Khalid, Aniket G. Chanda, Paul M. Weaver   +3 more
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Differential Quadrature

1985
Richard Bellman, George Adomian
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Differential Quadrature

1986
Richard E. Bellman, Robert S. Roth
openaire   +1 more source

A mm-Wave Differential-to-Quadrature Frequency Tripler with Automatic Locking and Quadrature Correction

2023 IEEE Nordic Circuits and Systems Conference (NorCAS), 2023
Rikard Gannedahl, Henrik Sjöland
openaire   +1 more source

Some Applications of Quadrature by Differentiation

Journal of the Society for Industrial and Applied Mathematics, 1961
openaire   +2 more sources