Results 1 to 10 of about 1,976 (105)

Value at Risk long memory volatility models with heavy-tailed distributions for cryptocurrencies [PDF]

open access: yesFrontiers in Applied Mathematics and Statistics
This paper investigates the volatility dynamics and underlying long memory features of four major cryptocurrencies—Bitcoin, Ethereum, Litecoin, and Ripple—which were selected due to their high liquidity, large trading volumes, and historical significance
Stephanie Danielle Subramoney   +2 more
doaj   +2 more sources

Analytical wave solutions in thermoelastic media with temperature-dependent properties via IMETF method [PDF]

open access: yesScientific Reports
This study delivers an in-depth analytical investigation of exact wave solutions derived within the context of the Three-Phase-Lag (3PHL) generalized thermoelasticity model, explicitly incorporating the temperature dependence of material properties.
Mohamed F. Ismail   +5 more
doaj   +2 more sources

Improved parameter estimators for the flexible extended skew-t model with extensive simulations, applications and volatility modeling

open access: yesScientific African, 2023
This study introduces a new conditional innovation density called the generalized odd generalized exponentiated skew-t (GOGEST) distribution for the generalized autoregressive conditional heteroscedasticity (GARCH) volatility models.
O.D. Adubisi, A. Abdulkadir, D.J. Adashu
doaj   +1 more source

On the Kaniadakis Distributions Applied in Statistical Physics and Natural Sciences

open access: yesEntropy, 2023
Constitutive relations are fundamental and essential to characterize physical systems. By utilizing the κ-deformed functions, some constitutive relations are generalized.
Tatsuaki Wada, Antonio Maria Scarfone
doaj   +1 more source

Mastering the Body and Tail Shape of a Distribution

open access: yesMathematics, 2021
The normal distribution and its perturbation have left an immense mark on the statistical literature. Several generalized forms exist to model different skewness, kurtosis, and body shapes.
Matthias Wagener   +2 more
doaj   +1 more source

Generalized Thermoelastic Infinite Annular Cylinder under the Hyperbolic Two-Temperature Fractional-Order Strain Theory

open access: yesFractal and Fractional, 2023
This work introduces a new thermoelastic model of an isotropic and homogeneous annular cylinder. The cylinder’s bounding inner surface is shocked thermally, and the bounding outer surface has no temperature increment and volumetric strain.
Eman A. N. Al-Lehaibi
doaj   +1 more source

Inference in Multiple Linear Regression Model with Generalized Secant Hyperbolic Distribution Errors

open access: yesIngeniería y Ciencia, 2021
We study multiple linear regression model under non-normally distributed random error by considering the family of generalized secant hyperbolic distributions.
Álvaro Alexander Burbano Moreno   +2 more
doaj   +1 more source

Hyperbolic Cosine–Exponentiated Exponential Lifetime Distribution and its Application in Reliability [PDF]

open access: yesInternational Journal of Supply and Operations Management, 2017
Recently, Kharazmi and Saadatinik (2016) introduced a new family of lifetime distributions called hyperbolic cosine – F (HCF) distribution. In the present paper, it is focused on a special case of HCF family with exponentiated exponential distribution as
Omid Kharazmi
doaj   +2 more sources

The HS-SAS and GSH-SAS Distribution as Model for Unconditional and Conditional Return Distributions

open access: yesAustrian Journal of Statistics, 2016
We introduce two new skewed and leptokurtic distributions derived from the hyperbolic secant distribution and from Vaughan (2002)’s generalized hyperbolic distribution by use of the sinh-arcsinh transformation introduced in Jones and Pewsey (2009 ...
Matthias Fischer, Klaus Herrmann
doaj   +1 more source

A New Conformal Map for Polynomial Chaos Applied to Direction-of-Arrival Estimation via UCA Root-MUSIC

open access: yesSensors, 2022
The effects of random array deformations on Direction-of-Arrival (DOA) estimation with root-Multiple Signal Classification for uniform circular arrays (UCA root-MUSIC) are characterized by a conformally mapped generalized Polynomial Chaos (gPC) algorithm.
Seppe Van Brandt   +3 more
doaj   +1 more source

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