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Modified generalized Weibull distribution: theory and applications [PDF]

open access: yesScientific Reports, 2023
This article presents and investigates a modified version of the Weibull distribution that incorporates four parameters and can effectively represent a hazard rate function with a shape resembling a bathtub. Its significance in the fields of lifetime and
Mustafa S. Shama   +7 more
doaj   +2 more sources

Peakons and Persistence Properties of Solution for the Interacting System of Popowicz

open access: yesMathematics, 2023
This paper focuses on a two-component interacting system introduced by Popowicz, which has the coupling form of the Camassa–Holm and Degasperis–Procesi equations.
Yaohong Li, Chunyan Qin
doaj   +1 more source

Solution of Inhomogeneous Differential Equations with Polynomial Coefficients in Terms of the Green’s Function, in Nonstandard Analysis

open access: yesAppliedMath, 2022
Discussions are presented by Morita and Sato on the problem of obtaining the particular solution of an inhomogeneous differential equation with polynomial coefficients in terms of the Green’s function.
Tohru Morita
doaj   +1 more source

Parameter Estimation and Hypothesis Testing of Geographically Weighted Multivariate Generalized Poisson Regression

open access: yesMathematics, 2020
We introduce a new multivariate regression model based on the generalized Poisson distribution, which we called geographically-weighted multivariate generalized Poisson regression (GWMGPR) model, and we present a maximum likelihood step-by-step procedure
Sarni Maniar Berliana   +3 more
doaj   +1 more source

On using Shannon entropy measure for formulating new weighted exponential distribution

open access: yesJournal of Taibah University for Science, 2022
In this article, a new class of weighted exponential distribution called Entropy-Based Exponential weighted distribution (EBEWD) is proposed. The main idea of the new lifetime distribution is in using the Shannon entropy measure as a weighted function ...
Amjad D. Al-Nasser   +2 more
doaj   +1 more source

Solution of Inhomogeneous Fractional Differential Equations with Polynomial Coefficients in Terms of the Green’s Function, in Nonstandard Analysis

open access: yesMathematics, 2021
Discussions are presented by Morita and Sato in Mathematics 2017; 5, 62: 1–24, on the problem of obtaining the particular solution of an inhomogeneous ordinary differential equation with polynomial coefficients in terms of the Green’s function, in the ...
Tohru Morita, Ken-ichi Sato
doaj   +1 more source

Solution of Euler’s Differential Equation in Terms of Distribution Theory and Fractional Calculus

open access: yesMathematics, 2020
For Euler’s differential equation of order n, a theorem is presented to give n solutions, by modifying a theorem given in a recent paper of the present authors in J. Adv. Math. Comput. Sci.
Tohru Morita, Ken-ichi Sato
doaj   +1 more source

Recent Developments in Mixed Poisson Distributions

open access: yesASM Science Journal, 2021
Mixed Poisson distributions are a class of distributions arising from the Poisson mean fluctuating as a random variable. Mixed Poisson distributions have been applied in diverse disciplines for modelling non-homogeneity in populations.
Seng Huat Ong   +2 more
doaj   +1 more source

The Cauchy Distribution in Information Theory

open access: yesEntropy, 2023
The Gaussian law reigns supreme in the information theory of analog random variables. This paper showcases a number of information theoretic results which find elegant counterparts for Cauchy distributions.
Sergio Verdú
doaj   +1 more source

On Multivariate Distribution Theory

open access: yesThe Annals of Mathematical Statistics, 1954
This paper is concerned with a matrix method of deriving the sampling distributions of a large class of statistics directly from the probability law for random samples from a multivariate normal population, that is without assuming the Wishart distribution or the distribution of rectangular coordinates.
Olkin, I., Roy, S. N.
openaire   +3 more sources

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