Results 21 to 30 of about 70,369 (269)

How do oil price changes affect inflation in Central and Eastern European countries? A wavelet-based Markov switching approach

open access: yesBaltic Journal of Economics, 2019
This paper investigates how oil price changes affect consumer price inflation in eleven Central and Eastern European countries. We use a wavelet-based Markov switching approach in order to distinguish between the effects at different time horizons.
Dejan Živkov   +2 more
doaj   +1 more source

Hybrid wavelet-gene expression programming and wavelet-support vector machine models for rainfall-runoff modeling

open access: yesWater Science and Technology, 2022
It is critical to use research methods to collect and regulate surface water to provide water while avoiding damage. Following accurate runoff prediction, principled planning for optimal runoff is implemented.
Potharlanka Jhansi Lakshmi   +4 more
doaj   +1 more source

A hybrid wavelet-Lyapunov exponent model for river water quality forecast

open access: yesJournal of Hydroinformatics, 2021
The use of spectral theory and chaos theory on river water quality modeling is reported in a very limited way. This study proposes a wavelet-maximum Lyapunov exponent (WMLE) hybrid model for river water quality dynamics, combining spectral theory and ...
Jiping Jiang   +5 more
doaj   +1 more source

Wavelets on the Interval and Fast Wavelet Transforms

open access: yesApplied and Computational Harmonic Analysis, 1993
The paper contains a detailed analysis of several constructions of orthonormal bases of wavelets on a finite interval. A new construction is suggested which avoids some of the disadvantages of earlier constructions.
Cohen, Albert   +2 more
openaire   +3 more sources

Visual Attention-Based Image Watermarking

open access: yesIEEE Access, 2016
Imperceptibility and robustness are two complementary but fundamental requirements of any watermarking algorithm. Low strength watermarking yields high imperceptibility but exhibits poor robustness.
Deepayan Bhowmik   +2 more
doaj   +1 more source

Wavelets in subspaces. [PDF]

open access: yesMichigan Mathematical Journal, 1996
Let \(T\) and \(D\) be the translation and unitary dilation operators on \(L^2(\mathbb{R})\) given by \((Tf)(t)= f(t- 1)\) and \((Df)(t)=\sqrt 2f(2t)\). An orthogonal wavelet for a subspace \(X\) of \(L^2(\mathbb{R})\) is a unit vector \(\psi\in X\) such that \(\{D^nT^m\psi: n,m\in\mathbb{Z}\}\) is an orthonormal basis of \(X\).
Dai, Xingde, Lu, Shijie
openaire   +3 more sources

A Terracotta Mold Discovered in Chartres (France, Eure-et-Loir) with Original Iconography for Apollo

open access: yesLes Carnets de l’ACoSt
In this note, we introduce a mold for a terracotta figurine that represents the god Apollo, whose iconography is unprecedented in the products of central Gaul.
Loïc Androuin, David Wavelet
doaj   +1 more source

A Model for Yellow Tea Polyphenols Content Estimation Based on Multi-Feature Fusion

open access: yesIEEE Access, 2019
Polyphenols are one of the important ingredients determining the quality of tea, which play an important role in affecting tea quality standards and quality control. At present, NIR spectroscopy technology has been widely used in tea quality detection to
Baohua Yang   +3 more
doaj   +1 more source

A Biorthogonal Hermite Cubic Spline Galerkin Method for Solving Fractional Riccati Equation

open access: yesMathematics, 2022
This paper is devoted to the wavelet Galerkin method to solve the Fractional Riccati equation. To this end, biorthogonal Hermite cubic Spline scaling bases and their properties are introduced, and the fractional integral is represented based on these ...
Haifa Bin Jebreen, Ioannis Dassios
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

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