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Operator self similar stochastic processes in Rd [PDF]

open access: yesStochastic Processes and Their Applications, 1981
AbstractOperator self similar stochastic processes taking values in a finite dimensional Euclidean space are introduced and some of their properties are studied.
V K Rohatgi
exaly   +3 more sources

Self-similarity and Lamperti convergence for families of stochastic processes [PDF]

open access: yesLithuanian Mathematical Journal, 2011
We define a new type of self-similarity for one-parameter families of stochastic processes, which applies to a number of important families of processes that are not self-similar in the conventional sense. This includes a new class of fractional Hougaard motions defined as moving averages of Hougaard Lévy process, as well as some well-known families of
Bent Jørgensen
exaly   +6 more sources

Two-particle anomalous diffusion: probability density functions and self-similar stochastic processes [PDF]

open access: yesPhilosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2013
Two-particle dispersion is investigated in the context of anomalous diffusion. Two different modelling approaches related to time subordination are considered and unified in the framework of self-similar stochastic processes. By assuming a single-particle fractional Brownian motion and that the two-particle correlation function decreases ...
Gianni Pagnini, Francesco Mainardi
exaly   +9 more sources

A class of self-similar stochastic processes with stationary increments to model anomalous diffusion in physics [PDF]

open access: yesIntegral Transforms and Special Functions, 2009
In this paper we present a general mathematical construction that allows us to define a parametric class of $H$-sssi stochastic processes (self-similar with stationary increments), which have marginal probability density function that evolves in time according to a partial integro-differential equation of fractional type.
Francesco Mainardi
exaly   +4 more sources

Noncentral Limit Theorem for the Cubic Variation of a Class of Self-Similar Stochastic Processes [PDF]

open access: yesTheory of Probability and Its Applications, 2011
By using multiple Wiener–Ito stochastic integrals, we study the cubic variation of a class of self-similar stochastic processes with stationary increments (the Rosenblatt process with self-similarity order $H\in (\frac{1}{2}, 1)$). This study is motivated by statistical purposes.
Khalifa Es-Sebaiy
exaly   +2 more sources

Cluster Analysis on Locally Asymptotically Self-Similar Processes with Known Number of Clusters

open access: yesFractal and Fractional, 2022
We conduct cluster analysis of a class of locally asymptotically self-similar stochastic processes with finite covariance structures, which includes Brownian motion, fractional Brownian motion, and multifractional Brownian motion as paradigmatic examples.
Nan Rao, Qidi Peng, Ran Zhao
doaj   +1 more source

Review article: Scaling, dynamical regimes, and stratification. How long does weather last? How big is a cloud? [PDF]

open access: yesNonlinear Processes in Geophysics, 2023
Until the 1980s, scaling notions were restricted to self-similar homogeneous special cases. I review developments over the last decades, especially in multifractals and generalized scale invariance (GSI).
S. Lovejoy
doaj   +1 more source

Elliptic Self Similar Stochastic Processes [PDF]

open access: yesRevista Matemática Iberoamericana, 1999
Let M be a random measure and L be an elliptic pseudo-differential operator on \mathbb{R}^d
Benassi, Albert, Roux, Daniel
openaire   +3 more sources

A Drive towards Thermodynamic Efficiency for Dissipative Structures in Chemical Reaction Networks

open access: yesEntropy, 2021
Dissipative accounts of structure formation show that the self-organisation of complex structures is thermodynamically favoured, whenever these structures dissipate free energy that could not be accessed otherwise.
Kai Ueltzhöffer   +3 more
doaj   +1 more source

Can power-law scaling and neuronal avalanches arise from stochastic dynamics? [PDF]

open access: yesPLoS ONE, 2010
The presence of self-organized criticality in biology is often evidenced by a power-law scaling of event size distributions, which can be measured by linear regression on logarithmic axes. We show here that such a procedure does not necessarily mean that
Jonathan Touboul, Alain Destexhe
doaj   +1 more source

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