Results 21 to 30 of about 512,361 (324)

On Generalized Carleson Operators of Periodic Wavelet Packet Expansions

open access: yesThe Scientific World Journal, 2013
Three new theorems based on the generalized Carleson operators for the periodic Walsh-type wavelet packets have been established. An application of these theorems as convergence a.e.
Shyam Lal, Manoj Kumar
doaj   +1 more source

Young children's perspectives of time: New directions for co‐constructing understandings of quality in ECEC

open access: yesBritish Educational Research Journal, EarlyView., 2023
Abstract Children's relationship with time in preschools is an under‐researched area. Young children rarely know how to measure time using a clock, but their experiences of time may contribute to understanding children's well‐being and debates about quality in preschools.
Kristín Dýrfjörð   +3 more
wiley   +1 more source

Linear Codes from Two Weakly Regular Plateaued Balanced Functions

open access: yesEntropy, 2023
Linear codes with a few weights have been extensively studied due to their wide applications in secret sharing schemes, strongly regular graphs, association schemes, and authentication codes.
Shudi Yang, Tonghui Zhang, Ping Li
doaj   +1 more source

A generalized Walsh system for arbitrary matrices

open access: yesDemonstratio Mathematica, 2019
In this paper we study in detail a variation of the orthonormal bases (ONB) of L2[0, 1] introduced in [Dutkay D. E., Picioroaga G., Song M. S., Orthonormal bases generated by Cuntz algebras, J. Math. Anal.
Harding Steven N., Picioroaga Gabriel
doaj   +1 more source

A Multivariate Fast Discrete Walsh Transform with an Application to Function Interpolation

open access: yes, 2008
For high dimensional problems, such as approximation and integration, one cannot afford to sample on a grid because of the curse of dimensionality. An attractive alternative is to sample on a low discrepancy set, such as an integration lattice or a ...
Dick, Josef   +2 more
core   +1 more source

On the universal function for weighted spaces L^p_u[0,1], p>=1

open access: yes, 2017
In the paper it is shown that there exist a function g from L1[0,1] and a weight function ...
Grigoryan, Martin   +2 more
core   +1 more source

A Hybrid Signal Processing Method Combining Mathematical Morphology and Walsh Theory for Power Quality Disturbance Detection and Classification

open access: yesCSEE Journal of Power and Energy Systems
In this paper, a novel signal processing method combining mathematical morphology (MM) and Walsh theory is proposed, which uses Walsh functions to control the structuring element (SE) and MM operators.
Zhi Ding   +3 more
doaj   +1 more source

Study of five-level inverter double-band SHEPWM control method

open access: yesGong-kuang zidonghua, 2014
A kind of five-level inverter double-band SHEPWM control method was proposed combining Walsh transformation with SHEPWM program which can broaden modulation ratio of multi-level inverter.
YE Manyuan, CAI Hong, LI Bing, LI Song
doaj   +1 more source

COVID‐19 Vaccination is not Associated with the Development of Idiopathic Inflammatory Myositis in U.S. Veterans

open access: yesArthritis Care &Research, Accepted Article.
Objective Several case reports have proposed a potential association between COVID‐19 vaccination and the subsequent development of idiopathic inflammatory myositis (IIM). This study examined prior COVID‐19 vaccination in US Veterans who developed new‐onset IIM compared to those without new‐onset IIM.
Caleb Hernández   +10 more
wiley   +1 more source

Walsh Spectral Techniques for Logic Synthesis FPGA

open access: yesAdvances in Electrical and Electronic Engineering, 2015
The implementation value of multi-output Boolean functions in logic synthesis FPGA can be reduced by using Walsh spectral representation. This paper proposes an algorithm for calculating the maximum coefficient of the autocorrelation function of BF ...
Nhan Khanh Huu Nguyen
doaj   +1 more source

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