Results 111 to 120 of about 3,073 (205)

Moments of the generalized Rayleigh distribution [PDF]

Quarterly of Applied Mathematics, 1961
openaire   +1 more source

TEC Prediction Using Cross‐Attention Spatiotemporal Feature Weighted BiConvLSTM and Improved Pre‐Earthquake Anomaly Detection

Space Weather, Volume 24, Issue 6, June 2026.
Abstract To address the complex spatiotemporal characteristics of ionospheric total electron content (TEC), a bidirectional convolutional long short‐term memory network with a dynamic cross‐attention mechanism for spatiotemporal feature weighting (CASF‐BiConvLSTM) is proposed and further combined with the sliding interquartile range (SIQR) method ...
Mengying Lin, Hongteng Ma, Xuefen Zhu, Gangyi Tu, Ang Li, Hao Pan   +5 more
wiley   +1 more source

A Reduced Dimensional Emulator for Forecasting Equatorial Spread F

Space Weather, Volume 24, Issue 6, June 2026.
Abstract A machine learning emulator has been developed to efficiently reproduce electron densities from a three‐dimensional, data‐driven, regional simulation of postsunset ionospheric irregularities associated with equatorial spread F (ESF). The simulation has previously been shown to produce accurate ESF conditions observed at the Jicamarca Radio ...
A. Kirchman, D. L. Hysell, S. Palacios
wiley   +1 more source

Impacts of E‐Region Neutral Wind Shear on Equatorial Plasma Bubbles: SAMI3 Simulations Including Metal Ions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract The vertical shear of horizontal neutral winds plays an important role in forming dense metallic layers in the E region. Previous studies suggest that metal ion layers may inhibit equatorial plasma bubble (EPB) development by enhancing E‐region Pedersen conductivity.
Minjing Li, Yue Deng, Joseph D. Huba, Zihan Wang   +3 more
wiley   +1 more source

Bayesian estimation under different loss functions for the case of inverse Rayleigh distribution

Kuwait Journal of Science
In this study, the best parameter estimator for the scale parameter (θ) of the inverse Rayleigh distribution was determined based on a comparison of the maximum likelihood estimator (MLE) method, the Bayesian generalized squared error loss function (SELF)
doaj   +1 more source

Estimation of the Two Parameters for Generalized Rayleigh Distribution Function Using Simulation Technique

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
     In this paper, suggested formula as well a conventional method for estimating the twoparameters (shape and scale) of the Generalized Rayleigh Distribution was proposed.
A. A . AL- Naqeeb, A. M . Hamed
doaj  

Moments of Powered Rayleigh Distribution by Generalized Order Statistics

WSEAS TRANSACTIONS ON MATHEMATICS
The power Rayleigh distribution is considered via the power transformation technique. The suggested model behaves better than the original distribution in dealing with complex data. The key focus of this paper is to establish some simple recurrence relations for single and product moments of generalized order statistics from the power Rayleigh ...
openaire   +1 more source

Classical and Bayesian Inference for the Two-Parameter Rayleigh Distribution with Random Censored Data. [PDF]

Entropy (Basel)
Zhang L, Gui W, Zhao Z, Liu M.
europepmc   +1 more source

Blind image quality assessment based on statistical features. [PDF]

Sci Rep
Ji W, Chen X.
europepmc   +1 more source

Applied Dynamic System Theory for Coordination Assessment of Whole-Body Center of Mass During Different Countermovements. [PDF]

Sensors (Basel)
Rodrigues C, Correia MV, Abrantes JMCS, Rodrigues MAB, Nadal J.   +4 more
europepmc   +1 more source