Results 21 to 30 of about 751,600 (289)

The hybrid power mean of the generalized Gauss sums

open access: yesAdvances in Difference Equations, 2017
The main purpose of this paper is using the analytic method and the orthogonal properties of the character sums to study the computational problem of one kind hybrid power mean of the generalized Gauss sums mod p $\operatorname{mod}\ p$ , an odd prime ...
Li Chen, Wenpeng Zhang
doaj   +1 more source

Ultrafast Electrically Pumped VECSELs

open access: yesIEEE Photonics Journal, 2013
We present an improved design for electrically pumped vertical external-cavity surface-emitting lasers (EP-VECSELs) optimized for passive modelocking with a semiconductor saturable absorber mirror (SESAM).
W. P. Pallmann   +7 more
doaj   +1 more source

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

On the High-Power Mean of the Generalized Gauss Sums and Kloosterman Sums

open access: yesMathematics, 2019
The main aim of this paper is to use the properties of the trigonometric sums and character sums, and the number of the solutions of several symmetry congruence equations to research the computational problem of a certain sixth power mean of the ...
Xinyu Liu, Wenpeng Zhang
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

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

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

Counting curves via lattice paths in polygons [PDF]

open access: yes, 2003
This note presents a formula for the enumerative invariants of arbitrary genus in toric surfaces. The formula computes the number of curves of a given genus through a collection of generic points in the surface.
Mikhalkin, Grigory
core   +7 more sources

On computing Gauss-Kronrod quadrature formulae [PDF]

open access: yesMathematics of Computation, 1986
We discuss the use of Newton’s method for computing Gauss-Kronrod quadrature formulae from modified moments. The underlying nonlinear maps are analyzed from the point of view of numerical condition. A method is indicated of computing the polynomial whose zeros are the Kronrod nodes.
CALIO', FRANCA   +2 more
openaire   +2 more sources

Asymptotic unbounded root loci - Formulae and computation [PDF]

open access: yes1981 20th IEEE Conference on Decision and Control including the Symposium on Adaptive Processes, 1981
We study the asymptotic behavior of the dosed loop eigenvalues (root loci) of a strictly proper linear time-invariant control system as loop gain goes to \infty . The formulas are stated in terms of the eigenvalues of nested restricted linear maps of the form A(\mod S_{2})|_{S_{1}} where S 1 and S 2 are subspaces of complementary dimension.
Sastry, S. Shankar, Desoer, Charles A.
openaire   +1 more source

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