Results 1 to 10 of about 24,119 (110)

A Gaussian quadrature rule for oscillatory integrals on a bounded interval

open access: yesDiscrete & Continuous Dynamical Systems - A, 2014
We investigate a Gaussian quadrature rule and the corresponding orthogonal polynomials for the oscillatory weight function $e^{iωx}$ on the interval $[-1,1]$. We show that such a rule attains high asymptotic order, in the sense that the quadrature error quickly decreases as a function of the frequency $ω$. However, accuracy is maintained for all values
Asheim, Andreas   +3 more
openaire   +5 more sources

On relation between one multiple and a corresponding one-dimensional integral with applications [PDF]

open access: yesYugoslav Journal of Operations Research, 2018
For a given finite positive measure on an interval I ⊆ R, a multiple stochastic integral of a Volterra kernel with respect to a product of a corresponding Gaussian orthogonal stochastic measure is introduced.
Bajić Tatjana
doaj   +1 more source

Some orthogonal polynomials on the finite interval and Gaussian quadrature rules for fractional Riemann‐Liouville integrals [PDF]

open access: yesMathematical Methods in the Applied Sciences, 2020
Inspired with papers by Bokhari, Qadir, and Al‐Attas (2010) and by Rapaić, Šekara, and Govedarica (2014), in this paper we investigate a few types of orthogonal polynomials on finite intervals and derive the corresponding quadrature formulas of Gaussian type for efficient numerical computation of the left and right fractional Riemann‐Liouville ...
openaire   +1 more source

High-order, Dispersionless "Fast-Hybrid" Wave Equation Solver. Part I: $\mathcal{O}(1)$ Sampling Cost via Incident-Field Windowing and Recentering [PDF]

open access: yes, 2020
This paper proposes a frequency/time hybrid integral-equation method for the time dependent wave equation in two and three-dimensional spatial domains.
Anderson, Thomas G.   +2 more
core   +2 more sources

OPERATOR METHOD IN THE SCALAR WAVE DIFFRACTION BY AXIALLY-SYMMETRIC DISCONTINUITIES IN THE SCREEN

open access: yesRadio Physics and Radio Astronomy, 2018
Purpose: The scalar wave diffraction by the annular slot in an infinitely thin screen is considered in case of Dirichlet and Neumann boundary conditions. Diffraction problem by a flat ring is also considered as a dual one.
M. E. Kaliberda   +2 more
doaj   +1 more source

Calculation of Generalized Polynomial-Chaos Basis Functions and Gauss Quadrature Rules in Hierarchical Uncertainty Quantification [PDF]

open access: yes, 2014
Stochastic spectral methods are efficient techniques for uncertainty quantification. Recently they have shown excellent performance in the statistical analysis of integrated circuits.
Daniel, Luca   +4 more
core   +2 more sources

The influence of random element displacement on DOA estimates obtained with (Khatri-Rao-)root-MUSIC [PDF]

open access: yes, 2014
Although a wide range of direction of arrival (DOA) estimation algorithms has been described for a diverse range of array configurations, no specific stochastic analysis framework has been established to assess the probability density function of the ...
Inghelbrecht, Veronique   +3 more
core   +2 more sources

Smoothing the payoff for efficient computation of Basket option prices [PDF]

open access: yes, 2016
We consider the problem of pricing basket options in a multivariate Black Scholes or Variance Gamma model. From a numerical point of view, pricing such options corresponds to moderate and high dimensional numerical integration problems with non-smooth ...
Bayer, Christian   +2 more
core   +3 more sources

On the convergence of spectral deferred correction methods [PDF]

open access: yes, 2018
In this work we analyze the convergence properties of the Spectral Deferred Correction (SDC) method originally proposed by Dutt et al. [BIT, 40 (2000), pp. 241--266].
Causley, Mathew F., Seal, David C.
core   +3 more sources

Introduction to Random Signals and Noise [PDF]

open access: yes, 2006
Random signals and noise are present in many engineering systems and networks. Signal processing techniques allow engineers to distinguish between useful signals in audio, video or communication equipment, and interference, which disturbs the desired ...
Etten, Wim van
core   +4 more sources

Home - About - Disclaimer - Privacy