Results 51 to 60 of about 321,454 (242)
Time-Modulated Arrays With Haar Wavelets
IEEE Antennas and Wireless Propagation Letters, 2020 Time-modulated arrays (TMAs) can effectively perform beamsteering over the first positive harmonic pattern by applying progressively delayed versions of stair-step approximations of a sine waveform to the antenna excitations. In this letter, we consider synthesizing such stair-step sine approximations by means of Haar wavelets.
Roberto Maneiro-Catoira +3 more
openaire +3 more sources
Enhancing Volatility Prediction: A Wavelet‐Based Hierarchical Forecast Reconciliation Approach
Journal of Forecasting, EarlyView.ABSTRACT Forecasting realized volatility (RV) has been widely studied, with numerous techniques developed to enhance predictive accuracy. Among these techniques, the use of RV decompositions based on intraday asset returns has been applied. However, the use of a frequency‐based decomposition, which provides unique insights into the dynamics of RV ...
Adam Clements, Ajith Perera
wiley +1 more source
The Haar Wavelet Transform of a Dendrogram: Additional Notes [PDF]
, 2007 We consider the wavelet transform of a finite, rooted, node-ranked, $p$-way tree, focusing on the case of binary ($p = 2$) trees. We study a Haar wavelet transform on this tree.
Murtagh, Fionn
core +2 more sources
Mathematical Methods in the Applied Sciences, EarlyView.A highly accurate numerical method is given for the solution of boundary value problem of generalized Bagley‐Torvik (BgT) equation with Caputo derivative of order 0<β<2$$ 0<\beta <2 $$ by using the collocation‐shooting method (C‐SM). The collocation solution is constructed in the space Sm+1(1)$$ {S}_{m+1}^{(1)} $$ as piecewise polynomials of degree at ...
Suzan Cival Buranay +2 more
wiley +1 more source
Jurnal Nasional Teknik Elektro, 2014 Detection of low signal and determination target locations is the basis and important in the system radar. Performance of radar can enhanced with enhancement signal-to-noise ratio in the receiver. In this research, will show a algorithm in radar signal
Raisah Hayati, Rahmadi Kurnia
doaj +3 more sources
WAVELET-BASED COMPUTATIONAL FRAMEWORK FOR THE SOLOW-SWAN ECONOMIC MODEL
BarekengIn this paper, we introduce an innovative numerical technique for addressing the classical Solow-Swan economic growth model through the application of the Haar wavelet approach.
Jay Kishore Sahani +3 more
doaj +1 more source
Algorithms, 2020 In this paper, we present a robust algorithm to solve numerically a family of two-dimensional fractional integro differential equations. The Haar wavelet method is upgraded to include in its construction the Laplace transform step.
Amer Darweesh +2 more
doaj +1 more source
Fast Poisson Noise Removal by Biorthogonal Haar Domain Hypothesis Testing
, 2008 Methods based on hypothesis tests (HTs) in the Haar domain are widely used to denoise Poisson count data. Facing large datasets or real-time applications, Haar-based denoisers have to use the decimated transform to meet limited-memory or computation-time
Digel, Seth W. +3 more
core +4 more sources
Journal of Marriage and Family, EarlyView.ABSTRACT Objective This study explores how and why West African and Caribbean heritage mothers in the Netherlands engage in ethnic‐racial socialization. Background West African and Caribbean communities have long histories in the Netherlands. Even though parents from these communities are tasked with helping children navigate mainstream Dutch culture ...
Daudi van Veen +2 more
wiley +1 more source
Haar Wavelet Method for the System of Integral Equations
Abstract and Applied Analysis, 2014 We employed the Haar wavelet method to find numerical solution of the system of Fredholm integral equations (SFIEs) and the system of Volterra integral equations (SVIEs).
Hassan A. Zedan, Eman Alaidarous
doaj +1 more source