Results 1 to 10 of about 36,286 (269)

Surface Crack Monitoring by Rayleigh Waves with a Piezoelectric-Polymer-Film Ultrasonic Transducer Array

open access: yesSensors, 2023
This paper presents a method for measuring surface cracks based on the analysis of Rayleigh waves in the frequency domain. The Rayleigh waves were detected by a Rayleigh wave receiver array made of a piezoelectric polyvinylidene fluoride (PVDF) film and ...
Xiaotian Li   +8 more
doaj   +1 more source

Enhancing Wind Energy Potential Assessment with Three-Parameter Weibull Distribution: A Comparative Analysis using MATLAB [PDF]

open access: yesE3S Web of Conferences
To determine the wind energy potential, the probability density function is typically used. For data distribution with modest wind speeds, this paper developed a three-parameter Weibull model.
K Kannakumar   +6 more
doaj   +1 more source

Sine Half-Logistic Inverse Rayleigh Distribution: Properties, Estimation, and Applications in Biomedical Data

open access: yesJournal of Mathematics, 2021
A new lifetime distribution with two parameters, known as the sine half-logistic inverse Rayleigh distribution, is proposed and studied as an extension of the half-logistic inverse Rayleigh model.
M. Shrahili   +2 more
doaj   +1 more source

A new versatile modification of the Rayleigh distribution for modeling COVID-19 mortality rates

open access: yesResults in Physics, 2022
The aim of this paper is to specify a new flexible statistical model to analyze COVID-19 mortality rates in Italy and Canada. A new versatile lifetime distribution with four parameters is proposed by using the exponentiated generalized class of ...
Mutua Kilai   +4 more
doaj   +1 more source

EVALUATING THE IMPACT OF CHANNEL FADING AND ANTENNA ARCHITECTURE ON BEAMFORMING PERFORMANCE FOR NEXT-GENERATION WIRELESS SYSTEMS [PDF]

open access: yesICTACT Journal on Communication Technology
Antenna beamforming has emerged as a promising solution for the advanced wireless communication systems particularly where large number of antennas is used at the transmitter and receiver (multiple input multiple output-MIMO) systems.
Kartik Ramesh Patel   +1 more
doaj   +1 more source

Spectrum evolution of Rayleigh backscattering in one-dimensional waveguide

open access: yesOpto-Electronic Advances, 2019
Despite the tremendous awareness of Rayleigh scattering characteristics and its considerable research interest for numerous fields, no report has been documented on the dynamic characteristics of spectrum evolution (SpE) and physical law for Rayleigh ...
Li Fuhui   +5 more
doaj   +1 more source

Natural Convective Flow Inside a Confined Enclosure Filled with Hybrid Nanofluid: Finite Volume Method [PDF]

open access: yesEPJ Web of Conferences
This work investigates heat transfer enhancement using natural convection in a square cavity filled with Cu-Ag/water (75:25) and Cu-Au/water (75:25) hybrid nanofluids.
Hadri Ibtissam   +3 more
doaj   +1 more source

Open software platform for automated analysis of paper-based microfluidic devices

open access: yesScientific Reports, 2020
Development of paper-based microfluidic devices that perform colorimetric measurements requires quantitative image analysis. Because the design geometries of paper-based microfluidic devices are not standardized, conventional methods for performing batch
Rayleigh W. Parker   +2 more
doaj   +1 more source

Nonlocal effects on Rayleigh-type surface wave in a micropolar piezoelectric medium

open access: yesVietnam Journal of Mechanics, 2022
The properties of Rayleigh-type surface wave in a linear, homogeneous and transversely isotropic nonlocal micropolar piezoelectric solid half-space are explored.
Baljeet Singh   +2 more
doaj   +1 more source

The 2008 Election: A Preregistered Replication Analysis

open access: yesStatistics and Public Policy, 2017
We present an increasingly stringent set of replications, a multilevel regression and poststratification analysis of polls from the 2008 U.S. presidential election campaign, focusing on a set of plots showing the estimated Republican vote share for ...
Rayleigh Lei, Andrew Gelman, Yair Ghitza
doaj   +1 more source

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