Results 21 to 30 of about 3,501 (264)

La factorización de una transformada de Fourier en el método de Wiener-Hopf

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2009
Using the Wiener-Hopf method, we factorize the Fourier Transform of the kernel of a singular integral equation as the product of two functions: one holomorphic in the upper semiplan and the other holomophic in the lower semiplan.
José Rosales-Ortega   +1 more
doaj   +1 more source

INVESTIGATION OF THE KOLMOGOROV-WIENER FILTER FOR CONTINUOUS FRACTAL PROCESSES ON THE BASIS OF THE CHEBYSHEV POLYNOMIALS OF THE FIRST KIND

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2020
This paper is devoted to the investigation of the Kolmogorov-Wiener filter weight function for continuous fractal processes with a power-law structure function.
Vyacheslav Gorev   +2 more
doaj   +1 more source

Accurate Evaluation of Wiener Integrals [PDF]

open access: yesMathematics of Computation, 1973
A new quadrature formula for an important class of Wiener integrals is presented, in which the Wiener integrals are approximated by n-fold integrals with an error O ( n − 2 ) O({n^{ - 2}}) . The resulting n-fold integrals can
openaire   +1 more source

Calculation of the Electrostatic Field of a Circular Cylinder with a Slot by the Wiener–Hopf Method

open access: yesMathematics, 2023
The paper presents an exact solution to the internal boundary value problem of the field distribution in an electrostatic lens formed by two identical semi-infinite coaxially located round cylinders separated by a slit of finite width and located inside ...
Seitkerim Bimurzaev   +2 more
doaj   +1 more source

A Modified Generalized Analytic Feynman Integral Associated with the Bounded Linear Operator

open access: yesAxioms, 2022
In this paper, we define a modified and generalized analytic Feynman integral associated with the bounded linear operator on abstract Wiener spaces. We then prove its existence. We also establish some modified and generalized analytic Feynman integration
Hyun Soo Chung
doaj   +1 more source

The Saddle Point Method for the Integral of the Absolute Value of the Brownian Motion [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
The distribution function of the integral of the absolute value of the Brownian motion was expressed by L.Takács in the form of various series. In the present paper we determine the exact tail asymptotics of this distribution function.
Leonid Tolmatz
doaj   +1 more source

Relationships among transforms, convolutions, and first variations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
In this paper, we establish several interesting relationships involving the Fourier-Feynman transform, the convolution product, and the first variation for functionals F on Wiener space of the form F(x)=f(〈α1,x〉,…,〈αn,x〉),                                 
Jeong Gyoo Kim   +3 more
doaj   +1 more source

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

open access: yesAdvanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes   +4 more
wiley   +1 more source

Controllability of nonlinear stochastic neutral fractional dynamical systems

open access: yesNonlinear Analysis, 2017
In this paper, we obtain an equivalent nonlinear integral equation to the stochastic neutral fractional system with bounded operator. Using the integral equation, the sufficient conditions for ensuring the complete controllability of the stochastic ...
Mabel Lizzy Rajendran   +2 more
doaj   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

open access: yesAdvanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal   +2 more
wiley   +1 more source

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