Results 11 to 20 of about 5,897 (117)

Half-linear Euler differential equation and its perturbations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
We investigate oscillatory properties of perturbed half-linear Euler differential equation. We give an alternative proof (simpler and more straightforward) of the main result of [O. Došlý, H. Funková, Abstr. Appl. Anal. 2012, Art. ID 738472] and we prove
Ondrej Dosly
doaj   +1 more source

Conditional oscillation of half-linear Euler-type dynamic equations on time scales

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
We investigate second-order half-linear Euler-type dynamic equations on time scales with positive periodic coefficients. We show that these equations are conditionally oscillatory, i.e., there exists a sharp borderline (a constant given by the ...
Petr Hasil, J. Vítovec
doaj   +1 more source

An Adaptive-to-Model Test for Parametric Functional Single-Index Model

open access: yesMathematics, 2023
Model checking methods based on non-parametric estimation are widely used because of their tractable limiting null distributions and being sensitive to high-frequency oscillation alternative models.
Lili Xia, Tingyu Lai, Zhongzhan Zhang
doaj   +1 more source

Estimating extreme flood events – assumptions, uncertainty and error [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
Hydrological extremes are amongst the most devastating forms of natural disasters both in terms of lives lost and socio-economic impacts. There is consequently an imperative to robustly estimate the frequency and magnitude of hydrological extremes ...
S. W. Franks, C. J. White, M. Gensen
doaj   +1 more source

Models of dynamic process of forming stugotine [PDF]

open access: yesTehnika, 2017
The oscillating elements obradog system in principle is conditional on the dynamic character of the process of formation filings. It is necessary to let the frequency of natural oscillation elements of the system tool - workpiece - accessories - machine ...
Aničić Obrad D.   +2 more
doaj   +1 more source

Euler type linear and half-linear differential equations and their non-oscillation in the critical oscillation case

open access: yesJournal of Inequalities and Applications, 2019
This paper is devoted to the analysis of the oscillatory behavior of Euler type linear and half-linear differential equations. We focus on the so-called conditional oscillation, where there exists a borderline between oscillatory and non-oscillatory ...
Zuzana Došlá   +3 more
doaj   +1 more source

Estimating Phase Amplitude Coupling between Neural Oscillations Based on Permutation and Entropy

open access: yesEntropy, 2021
Cross-frequency phase–amplitude coupling (PAC) plays an important role in neuronal oscillations network, reflecting the interaction between the phase of low-frequency oscillation (LFO) and amplitude of the high-frequency oscillations (HFO).
Liyong Yin   +4 more
doaj   +1 more source

Thomson scattering of plasma turbulence on PSI-2

open access: yesNuclear Materials and Energy, 2017
The turbulent transport in the edge of fusion reactors can be conveniently simulated by linear plasma devices with long duty cycles. At high input power steady state plasma discharges at PSI-2 exhibit intermittent fluctuations similar to the edge of ...
M. Hubeny   +4 more
doaj   +1 more source

Conditional Oscillation of Half-Linear Differential Equations with Coefficients Having Mean Values

open access: yesAbstract and Applied Analysis, 2014
We prove that the existence of the mean values of coefficients is sufficient for second-order half-linear Euler-type differential equations to be conditionally oscillatory.
Petr Hasil   +2 more
doaj   +1 more source

Spatiotemporal Analysis of Extreme Temperature Change on the Tibetan Plateau Based On Quantile Regression

open access: yesEarth and Space Science, 2022
Temperature extremes have been extensively observed on the Tibetan Plateau (TP), of which the dynamics were mostly monitored by traditional trend analysis based on linear regression.
Ling Yao   +6 more
doaj   +1 more source

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