Results 21 to 30 of about 335,481 (263)

M-Breather, Lumps, and Soliton Molecules for the 2+1-Dimensional Elliptic Toda Equation

open access: yesAdvances in Mathematical Physics, 2021
The 2+1-dimensional elliptic Toda equation is a higher dimensional generalization of the Toda lattice and also a discrete version of the Kadomtsev-Petviashvili-1 (KP1) equation. In this paper, we derive the M-breather solution in the determinant form for
Yuechen Jia, Yu Lu, Miao Yu, Hasi Gegen
doaj   +1 more source

Quantum Radon Transforms and Their Applications

open access: yesIEEE Transactions on Quantum Engineering, 2022
This article extends the Radon transform, a classical image-processing tool for fast tomography and denoising, to the quantum computing platform. A new kind of periodic discrete Radon transform (PDRT), called the quantum periodic discrete Radon transform
Guangsheng Ma, Hongbo Li, Jiman Zhao
doaj   +1 more source

DFT-Based Frequency Estimation of Multiple Sinusoids

open access: yesIEEE Access, 2022
An accurate frequency estimation method of multi-component sinusoidal signal in additive white Gaussian noise (AWGN) is proposed. The algorithm is implemented in the frequency domain and based on discrete Fourier transform (DFT). The maximum DFT spectral
Nian Liu   +5 more
doaj   +1 more source

Discrete Wilson Lines in F-Theory [PDF]

open access: yesAdvances in High Energy Physics, 2011
F-theory models are constructed where the7-brane has a nontrivial fundamental group. The base manifolds used are a toric Fano variety and a smooth toric threefold coming from a reflexive polyhedron. The discriminant locus of the elliptically fibered Calabi-Yau fourfold can be chosen such that one irreducible component is not simply connected (namely ...
openaire   +4 more sources

Discrete Hammersley’s lines with sources and sinksm

open access: yesLatin American Journal of Probability and Mathematical Statistics, 2016
We introduce two stationary versions of two discrete variants of Hammersley's process in a finite box, this allows us to recover in a unified and simple way the laws of large numbers proved by T. Sepp{ä}l{ä}inen for two generalized Ulam's problems. As a by-product we obtain an elementary solution for the original Ulam problem.
Basdevant, A-L   +3 more
openaire   +3 more sources

Background symmetries in orbifolds with discrete Wilson lines [PDF]

open access: yesNuclear Physics B, 1994
31 pages, QMW--TH--94 ...
Love, A., Sabra, W. A., Thomas, S.
openaire   +3 more sources

Method to Determine the Far-Field Beam Pattern of A Long Array From Subarray Beam Pattern Measurements

open access: yesSensors, 2020
Beam pattern measurement is essential to verifying the performance of an array sonar. However, common problems in beam pattern measurement of arrays include constraints on achieving the far-field condition and reaching plane waves mainly due to limited ...
Donghwan Jung, Jeasoo Kim
doaj   +1 more source

Can spatial patterns along climatic gradients predict ecosystem responses to climate change? Experimenting with reaction-diffusion simulations.

open access: yesPLoS ONE, 2017
Following a predicted decline in water resources in the Mediterranean Basin, we used reaction-diffusion equations to gain a better understanding of expected changes in properties of vegetation patterns that evolve along the rainfall transition between ...
Elena Roitberg, Maxim Shoshany
doaj   +1 more source

A discrete control algorithm synthesis for the live-steam-line heating system [PDF]

open access: yesMATEC Web of Conferences, 2020
An original mathematic model of a main live-steam-line heating system for the 6 MW turbine is reviewed. The present model is composed from a system of ODE with divergences and constant coefficients, along with an object structure is shown, numerical ...
Akimenko Dmitriy   +4 more
doaj   +1 more source

On parametric amplification in discrete Josephson transmission line

open access: yesPhysica C: Superconductivity and its Applications, 2023
We consider the discrete series-connected lossy Josephson transmission line, constructed from Josephson junctions, capacitors and resistors (one-dimensional array of Josephson junctions). We derive equations describing pump, signal, and idler interaction in the system and calculate the thresholds for the parametric amplification.
openaire   +2 more sources

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