Results 41 to 50 of about 401,256 (317)

A Stochastic Dynamical Model of Slope Creep and Failure

open access: yesGeophysical Research Letters, 2023
We propose a stochastic dynamical model to simulate slope secondary and tertiary creep phenomena. The slope secondary creep is represented by the Kesten process defined as a stochastic affine auto‐regressive process involving both multiplicative and ...
Qinghua Lei, Didier Sornette
doaj   +1 more source

Nonparametric Bayesian estimation of a H\"older continuous diffusion coefficient [PDF]

open access: yes, 2019
We consider a nonparametric Bayesian approach to estimate the diffusion coefficient of a stochastic differential equation given discrete time observations over a fixed time interval.
Gugushvili, Shota   +3 more
core   +2 more sources

A Family of Bayesian Estimators for the Two-Parametric Burr Type II Distribution

open access: yesJournal of Function Spaces, 2022
This study discusses the posterior estimation for the parameters of the Burr type II distribution (BIID). The informative and noninformative priors along with different loss functions have also been assumed for the posterior estimation. The applicability
R. Alshenawy   +4 more
doaj   +1 more source

Distribution Of Wealth In A Network Model Of The Economy

open access: yes, 2012
We show, analytically and numerically, that wealth distribution in the Bouchaud-M\'ezard network model of the economy is described by a three-parameter generalized inverse gamma distribution.
Holden, John G., Ma, Tao, Serota, R. A.
core   +1 more source

Compound distributions for financial returns.

open access: yesPLoS ONE, 2020
In this paper, we propose six Student's t based compound distributions where the scale parameter is randomized using functional forms of the half normal, Fréchet, Lomax, Burr III, inverse gamma and generalized gamma distributions.
Emmanuel Afuecheta   +4 more
doaj   +2 more sources

The effect of the infrared excess from the Be star on inverse Compton gamma-ray production in PSR B1259-63/SS 2883

open access: yes, 2010
The binary system PSR B1259-63 consists of a 48 ms pulsar in a 3.4 year orbit around a Be star and unpulsed TeV gamma-ray emission has been detected near previous periastron passages. A likely source of the gamma-rays is the inverse Compton up-scattering
Meintjes, P. J., van Soelen, B.
core   +1 more source

The η − µ / Inverse Gamma Composite Fading Model [PDF]

open access: yes, 2015
© 2015 IEEE. In this paper we propose a new composite fading model which assumes that the mean signal power of an η - μ signal envelope follows an inverse gamma distribution.
Cotton, Simon L.   +5 more
core   +1 more source

Maize productivity based on a distributional regression approach [PDF]

open access: yesPesquisa Agropecuária Brasileira
The objective of this work was to propose the use of traditional models based on distributional regression models to analyze maize productivity. The experiment was carried out in an alpha lattice design, with three replicates and 24 blocks.
Momate Emate Ossifo   +6 more
doaj   +1 more source

Chebyshev–Edgeworth-Type Approximations for Statistics Based on Samples with Random Sizes

open access: yesMathematics, 2021
Second-order Chebyshev–Edgeworth expansions are derived for various statistics from samples with random sample sizes, where the asymptotic laws are scale mixtures of the standard normal or chi-square distributions with scale mixing gamma or inverse ...
Gerd Christoph, Vladimir V. Ulyanov
doaj   +1 more source

Revisiting the Lognormal Modelling of Shadowing Effects during Wireless Communications by Means of the α-μ/α-μ Composite Distribution

open access: yesModelling, 2021
Properly modeling the shadowing effects during wireless transmissions is crucial to perform the network quality assessment. From a mathematical point of view, using composite distributions allows one to combine both fast fading and slow fading stochastic
Luan C. S. M. Ozelim   +2 more
doaj   +1 more source

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