Results 11 to 20 of about 441,131 (218)

A review of numerical asymptotic averaging for weakly nonlinear hyperbolic waves

open access: yesMathematical Modelling and Analysis, 2004
We present an overview of averaging method for solving weakly nonlinear hyperbolic systems. An asymptotic solution is constructed, which is uniformly valid in the “large” domain of variables t + |x| ∼ O(ϵ –1).
A. Krylovas, R. Čiegis
doaj   +1 more source

Integration of visual motion and orientation signals in dyslexic children: an equivalent noise approach

open access: yesRoyal Society Open Science, 2022
Dyslexic individuals have been reported to have reduced global motion sensitivity, which could be attributed to various causes including atypical magnocellular or dorsal stream function, impaired spatial integration, increased internal noise and/or ...
Catherine Manning   +3 more
doaj   +1 more source

Use of zero-frequency resonator for automatically detecting systolic peaks of photoplethysmogram signal

open access: yesHealthcare Technology Letters, 2019
This work investigates the application of zero-frequency resonator (ZFR) for detecting systolic peaks of photoplethysmogram (PPG) signals. Based on the authors’ studies, they propose an automated noise-robust method, which consists of the central ...
Simhadri Vadrevu   +1 more
doaj   +1 more source

Word-embedding Based Text Vectorization Using Clustering

open access: yesМоделирование и анализ информационных систем, 2021
It is known that in the tasks of natural language processing, the representation of texts by vectors of fixed length using word-embedding models makes sense in cases where the vectorized texts are short.The longer the texts being compared, the worse the ...
Vitaly I. Yuferev, Nikolai A. Razin
doaj   +1 more source

Controlled Discrete-Time Semi-Markov Random Evolutions and Their Applications

open access: yesMathematics, 2021
In this paper, we introduced controlled discrete-time semi-Markov random evolutions. These processes are random evolutions of discrete-time semi-Markov processes where we consider a control. applied to the values of random evolution.
Anatoliy Swishchuk, Nikolaos Limnios
doaj   +1 more source

Repeated judgment sampling: Boundaries

open access: yesJudgment and Decision Making, 2011
This paper investigates the boundaries of the recent result that eliciting more than one estimate from the same person and averaging these can lead to accuracy gains in judgment tasks.
Johannes Müller-Trede
doaj   +1 more source

On non-conservative perturbations of three-dimensional integrable systems [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
At present, non-conservative perturbations of two-dimensional nonlinear Hamiltonian systems have been studied quite fully. The purpose of the study is to generalize this theory to the three-dimensional case, when the unperturbed system is nonlinear ...
Morozov, Kirill Евгеньевич
doaj   +1 more source

Asymptotic method for approximation of resonant interaction of nonlinear multidimensional hyperbolic waves

open access: yesMathematical Modelling and Analysis, 2008
A method of averaging along characteristics of weakly nonlinear hyperbolic systems, which was presented in earlier works of the author for one dimensional waves, is generalized for some cases of multidimensional wave problems.
Aleksandras Krylovas
doaj   +1 more source

Extracting Summary Statistics of Rapid Numerical Sequences

open access: yesFrontiers in Psychology, 2021
We examine the ability of observers to extract summary statistics (such as the mean and the relative-variance) from rapid numerical sequences of two digit numbers presented at a rate of 4/s.
David Rosenbaum   +3 more
doaj   +1 more source

Mean Flow from Phase Averages in the 2D Boussinesq Equations

open access: yesAtmosphere, 2023
The atmosphere and ocean are described by highly oscillatory PDEs that challenge both our understanding of their dynamics and their numerical approximation.
Beth A. Wingate   +2 more
doaj   +1 more source

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