Results 21 to 30 of about 2,137,054 (245)

UTD-Type Solution of Physical Optics Approximation for Reconfigurable Intelligent Surface Modeled by a Continuous Planar Surface

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
An accurate and fast prediction technique is necessary for the radiation pattern of the reconfigurable intelligent surface (RIS) to quantitatively and efficiently evaluate the performance of RIS.
Xin Du, Chechia Kang, Jun-Ichi Takada
doaj   +1 more source

The Generalized Quadratic Gauss Sum and Its Fourth Power Mean

open access: yesMathematics, 2019
In this article, our main purpose is to introduce a new and generalized quadratic Gauss sum. By using analytic methods, the properties of classical Gauss sums, and character sums, we consider the calculating problem of its fourth power mean and give two ...
Shimeng Shen, Wenpeng Zhang
doaj   +1 more source

Discrete Information Dynamics with Confidence via the Computational Mechanics Bootstrap: Confidence Sets and Significance Tests for Information-Dynamic Measures

open access: yesEntropy, 2020
Information dynamics and computational mechanics provide a suite of measures for assessing the information- and computation-theoretic properties of complex systems in the absence of mechanistic models.
David Darmon
doaj   +1 more source

Computational simulation of an aerodynamic profile of a vehicle SAE formula type using OpenFOAM

open access: yesSemina: Ciências Exatas e Tecnológicas, 2022
Improving vehicle design is essential for esthetic reasons and ensuring better efficiency and lower fuel consumption. The present study intends to provide a computational approach to an actual physical engineering problem: the aerodynamics of ...
Lúcio Vargas de Albuquerque Nunes   +2 more
doaj   +1 more source

Blood Balance Advanced Formula - Key Benefits, Ingredients & Price

open access: yes, 2021
This is a high-performing blood balance supplement. The unbelievable blend of natural ingredients serves a perfect solution for todays generation. The prices are truly affordable along with the moneyback guarantee.
Blood Balance Advanced Formula
core   +1 more source

A new closed-form formula for calculating a weakly singular static potential integral with linear current source distribution on a triangle [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2023
The article presents a closed-form formula for solving a weakly singular surface integral with a linear current source distribution associated with the SIE-MoM formulation used for solving electromagnetic (EM) problems.
Anna Grytsko, Piotr Słobodzian
doaj   +1 more source

The hybrid power mean of quartic Gauss sums and Kloosterman sums

open access: yesOpen Mathematics, 2017
The main purpose of this paper is using the analytic method and the properties of the classical Gauss sums to study the computational problem of one kind fourth hybrid power mean of the quartic Gauss sums and Kloosterman sums, and give an exact ...
Xiaoxue Li, Jiayuan Hu
doaj   +1 more source

Quadrature formula for computed tomography

open access: yesJournal of Approximation Theory, 2010
The authors present a Gaussian quadrature formula for integrals of the form \[ \int_B f(x,y) U_n(x\cos\theta+y\sin\theta)\,dx\,dy \] over the unit disk \(B\) for the Chebyshev polynomials \(U_n\) of second kind. The formula involves \(n\) Radon projections on \(B\), has the maximal degree \(3n+1\) of precision, and is unique by this property. It may be
Bojanov, Borislav, Petrova, Guergana
openaire   +2 more sources

On the hybrid power mean of two kind different trigonometric sums

open access: yesOpen Mathematics, 2019
The main purpose of this paper is using the analytic method, the properties of trigonometric sums and Gauss sums to study the computational problem of one kind hybrid power mean involving two different trigonometric sums, and give an interesting ...
Zhuoyu Chen, Wenpeng Zhang
doaj   +1 more source

One kind sixth power mean of the three-term exponential sums

open access: yesOpen Mathematics, 2017
In this paper, we use the estimate for trigonometric sums and the properties of the congruence equations to study the computational problem of one kind sixth power mean of the three-term exponential sums.
Wang Xiaoying, Li Xiaoxue
doaj   +1 more source

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