Results 41 to 50 of about 125 (118)

Communications Performance Analysis of Wireless Multiple Access Channel With Specially Correlated Sources

IEEE Access
From both practical and theoretical viewpoints, performance analysis of communication systems using information-theoretic results is very important. In this study, first, we obtain a general achievable rate for a two-user wireless multiple access channel
Akram Entezami, Ghosheh Abed Hodtani
doaj   +1 more source

Bivariate Power Lindley Models Based on Copula Functions Under Type‐II Censored Samples With Applications in Industrial and Medical Data

Journal of Mathematics, Volume 2025, Issue 1, 2025.
This study introduces three innovative bivariate models to address complex dependencies between random variables in real‐world applications. Specifically, we develop bivariate power Lindley (BPL) distribution models utilizing the Gumbel, Frank, and Clayton copulas.
Ehab M. Almetwally, Aisha Fayomi, Maha E. Qura, Pramita Mishra   +3 more
wiley   +1 more source

Quantifying compound flood event uncertainties in a wave and tidally dominated coastal region: The impacts of copula selection, sampling, record length, and precipitation gauge selection

Journal of Flood Risk Management, Volume 17, Issue 3, September 2024.
Abstract Coastal flooding is a growing hazard. Compound event characterization and uncertainty quantification are critical to accurate flood risk assessment. This study presents univariate, conditional, and joint probabilities for observed water levels, precipitation, and waves.
Joseph T. D. Lucey, Timu W. Gallien
wiley   +1 more source

Predicting failure times of coherent systems

Naval Research Logistics (NRL), Volume 71, Issue 5, Page 627-644, August 2024.
Abstract The article is focused on studying how to predict the failure times of coherent systems from the early failure times of their components. Both the cases of independent and dependent components are considered by assuming that they are identically distributed (homogeneous components). The heterogeneous components' case can be addressed similarly
Jorge Navarro, Antonio Arriaza, Alfonso Suárez‐Llorens   +2 more
wiley   +1 more source

A bivariate relative poverty line for leisure time and income poverty: Detecting intersectional differences using distributional copulas

Review of Income and Wealth, Volume 70, Issue 2, Page 395-419, June 2024.
Empirical research on poverty today often goes beyond a focus on income to consider other dimensions of well‐being. However, relatively few multidimensional poverty measures explicitly consider time‐use, despite its particular relevance to women's double burden of paid and unpaid work.
Franziska Dorn, Rosalba Radice, Giampiero Marra, Thomas Kneib   +3 more
wiley   +1 more source

On a Perturbed Risk Model with Time‐Dependent Claim Sizes

Journal of Mathematics, Volume 2024, Issue 1, 2024.
We consider a risk model perturbed by a Brownian motion, where the individual claim sizes are dependent on the inter‐claim times. We study the Gerber–Shiu functions when ruin is due to a claim or the jump‐diffusion process. Integro‐differential equations and Laplace transforms satisfied by the Gerber–Shiu functions are obtained.
Longfei Wei, Jia Hao, Shiyu Song, Zhenhua Bao, Antonio Di Crescenzo   +4 more
wiley   +1 more source

Copula-Based Bivariate Modified Fréchet–Exponential Distributions: Construction, Properties, and Applications

Axioms
The classical exponential model, despite its flexibility, fails to describe data with non-constant failure or between-event dependency. To overcome this limitation, two new bivariate lifetime distributions are introduced in this paper.
Hanan Haj Ahmad, Dina A. Ramadan
doaj   +1 more source

On the physical layer security of correlated Weibull fading channels with transmitter side information in the presence of a passive eavesdropper

Alexandria Engineering Journal
In this paper, we analyze the performance of physical layer security (PLS) in Weibull fading wiretap channels (WTC), leveraging realistic channel propagation models in which the channel coefficients of the main (transmitter-to-legitimate receiver) and ...
Ali Mohammad Khodadoust, Mario Eduardo Rivero-Ángeles, Víctor Barrera-Figueroa   +2 more
doaj   +1 more source

A Procedure of Perturbation Leading to a New Class of Asymmetric Copulas

Mathematics
We propose and analyze a new class of copulas (generated by two univariate functions) that exhibit asymmetric nonlinear dependence, resulting from an antisymmetric perturbation of the independence copula.
Oussama Elamrani, Ahmed Sani
doaj   +1 more source

Bivariate power Lomax distribution with medical applications. [PDF]

PLoS One, 2023
Qura ME, Fayomi A, Kilai M, Almetwally EM.   +3 more
europepmc   +1 more source