Results 11 to 20 of about 35,165 (266)
Rayleigh and Raman Scattering from Alkali Atoms
Atoms, 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
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Rayleigh-Rayleigh Distribution: Properties and Applications
Journal 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
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Non-Rayleigh scattering behavior for anisotropic Rayleigh particles [PDF]
Optics 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
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ON PSEUDO-RAYLEIGH DISTRIBUTION
Far East Journal of Theoretical Statistics, 2021 Summary: Analyzing the performance and evaluating the reliability of multicomponent system in various fields of engineering and technology follow bivariate pseudo-Rayleigh distributions. In this work, we have discussed a new bivariate pseudo-Rayleigh distribution. Some standard properties of distribution have been studied.
Vijayakumar, Shakila, Sivakumar, B.
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Sensors, 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
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Prandtl and Rayleigh numbers dependences in Rayleigh-Bénard convection [PDF]
Europhysics Letters (EPL), 2002 Using low-temperature gaseous helium close to the critical point, we investigate the Prandtl-number dependence of the effective heat conductivity (Nusselt number) for a 1/2 aspect ratio Rayleigh-Benard cell. Very weak dependence is observed in the range 0.7 < Pr < 21; 2 × 108 < Ra < 2 × 1010: the absolute value of the average logarithmic slope δ = (∂ln
Roche, Philippe-Emmanuel +3 more
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Bit Error Rate Closed-Form Expressions for LoRa Systems under Nakagami and Rice Fading Channels
Sensors, 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
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Rayleigh and Prandtl number scaling in the bulk of Rayleigh–Bénard turbulence [PDF]
Physics of Fluids, 2005 The Ra and Pr number scaling of the Nusselt number Nu, the Reynolds number Re, the temperature fluctuations, and the kinetic and thermal dissipation rates is studied for (numerical) homogeneous Rayleigh–Bénard turbulence, i.e., Rayleigh–Bénard turbulence with periodic boundary conditions in all directions and a volume forcing of the temperature field ...
Calzavarini E. +3 more
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Enhancing Wind Energy Potential Assessment with Three-Parameter Weibull Distribution: A Comparative Analysis using MATLAB [PDF]
E3S Web of ConferencesTo 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
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Geophysical Journal International, 1976 Summary In the theory of the Earth's normal modes of oscillation it is customary to use Rayleigh's principle in the determination of perturbations in the eigenperiods due to perturbations in the structure of an Earth model. When internal boundaries are perturbed the usual methods have been found to yield incorrect numerical results and this paper is
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