Results 11 to 20 of about 334,139 (295)

Rayleigh and Raman Scattering from Alkali Atoms

open access: yesAtoms, 2020
Two computational methods developed recently [McNamara, Fursa, and Bray, Phys. Rev. A 98, 043435 (2018)] for calculating Rayleigh and Raman scattering cross sections for atomic hydrogen have been extended to quasi one-electron systems.
Adam Singor   +3 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

Bit Error Rate Closed-Form Expressions for LoRa Systems under Nakagami and Rice Fading Channels

open access: yesSensors, 2019
We derive exact closed-form expressions for Long Range (LoRa) bit error probability and diversity order for channels subject to Nakagami-m, Rayleigh and Rician fading.
Claudio Ferreira Dias   +2 more
doaj   +1 more source

Non-linear enhancement of laser generated ultrasonic Rayleigh waves by cracks [PDF]

open access: yes, 2008
Laser generated ultrasound has been widely used for detecting cracks, surface and sub-surface defects in many different materials. It provides a non-contact wideband excitation source which can be focused into different geometries.
Cann, B.   +4 more
core   +1 more source

Rayleigh-Rayleigh Distribution: Properties and Applications

open access: yesJournal of Physics: Conference Series, 2020
Abstract In this paper, a new compound distribution named Rayleigh-Rayleigh (Ra-Ra) is presented. Several structural statistical properties of new distribution containing explicit expressions for the r-th moments, characteristic function, quantile function, order statistics, Shannon and relative entropies, besides stress strength ...
N H Al-Noor, N K Assi
openaire   +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

Rayleigh Mixture Distribution [PDF]

open access: yesJournal of Applied Mathematics, 2011
This paper presents Rayleigh mixtures of distributions in which the weight functions are assumed to be chi‐square, t and F sampling distributions. The exact probability density functions of the mixture of two correlated Rayleigh random variables have been derived.
Karim, Rezaul   +3 more
openaire   +3 more sources

Exponentially growing solutions in homogeneous Rayleigh-Benard convection [PDF]

open access: yes, 2006
It is shown that homogeneous Rayleigh-Benard flow, i.e., Rayleigh-Benard turbulence with periodic boundary conditions in all directions and a volume forcing of the temperature field by a mean gradient, has a family of exact, exponentially growing ...
A. Tanabe   +8 more
core   +10 more sources

Non-Rayleigh scattering behavior for anisotropic Rayleigh particles [PDF]

open access: yesOptics Letters, 2012
Derived from the light scattering by a radially anisotropic sphere, unusual scattering behavior is exhibited, which breaks the Rayleigh law (scattering efficiency Q(sca)~q(4) as q→0, where q is the size parameter). Under certain conditions, we demonstrate an asymptotical relation between Q(sca) and q, i.e., Q(sca)=Fq(8), which is not realizable for ...
Ni, Y. X.   +3 more
openaire   +3 more sources

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

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