Results 1 to 10 of about 2,049,981 (310)

One-dimensional Wiener process with the properties of partial reflection and delay

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
In this paper, we construct the two-parameter semigroup of operators associated with a certain one-dimensional inhomogeneous diffusion process and study its properties.
B.I. Kopytko, R.V. Shevchuk
doaj   +1 more source

MATHEMATICAL MODELING OF RANDOM DIFFUSION FLOWS IN TWO-PHASE MULTILAYERED STOCHASTICALLY NONHOMOGENEOUS BODIES

open access: yesTASK Quarterly, 2015
An approach for studying stochastical diffusion flows of admixture particles in bodies of multiphase randomly nonhomogeneous structures is proposed, according to which initialboundary value problems of diffusion are formulated for flow functions and ...
YEVHEN CHAPLYA   +2 more
doaj   +1 more source

Wind energy production by means of diffusion stochastic process. Parameters estimation [PDF]

open access: yesEPJ Web of Conferences
In this work, we attempt to model wind energy production via a stochastic diffusion process. We consider an Ito-type stochastic differential * equation (SDE) and determine the probabilistic characteristics of the stochastic process solution, particularly
Oubamou Zian, El Kettani Moummou
doaj   +1 more source

Interpolation process between standard diffusion and fractional diffusion [PDF]

open access: yes, 2017
We consider a Hamiltonian lattice field model with two conserved quantities, energy and volume, perturbed by stochastic noise preserving the two previous quantities.
Bernardin, Cédric   +3 more
core   +4 more sources

Reaction-diffusion processes with nonlinear diffusion [PDF]

open access: yesPhysical Review E, 2012
We study reaction-diffusion processes with concentration-dependent diffusivity. First, we determine the decay of the concentration in the single-species and two-species diffusion-controlled annihilation processes. We then consider two natural inhomogeneous realizations.
openaire   +3 more sources

Stochastic Processes Crossing from Ballistic to Fractional Diffusion with Memory: Exact Results [PDF]

open access: yes, 2009
We address the now classical problem of a diffusion process that crosses over from a ballistic behavior at short times to a fractional diffusion (sub- or super-diffusion) at longer times. Using the standard non-Markovian diffusion equation we demonstrate
Anatoly Zagorodny   +5 more
core   +3 more sources

Mathematical modeling of an optimal oncotherapy for malignant tumors [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2021
The paper presents a mathematical model of the optimal treatment for malignant neoplasms. The neoplasm is considered as a distributed parameter object. The scheme for an optimal oncotherapy using a system of partial differential equations of parabolic ...
Igor A. Narkevich   +3 more
doaj   +1 more source

Reaction-diffusion systems in natural sciences and new technology transfer

open access: yesJournal of the Mechanical Behavior of Materials, 2012
Diffusion mechanisms in natural sciences and innovation management involve partial differential equations (PDEs). This is due to their spatio-temporal dimensions.
Keller André A.
doaj   +1 more source

Processo de difusão e TQC Diffusion process and TQC

open access: yesGestão & Produção, 1994
No momento em que assistimos em todo o país a uma disseminação em grande escala de conceitos rotulados de modelo japonês de gestão industrial (conceitos difundidos em nível global e aceitos como uma das poucas alternativas viáveis que se apresentam para ...
Nelson Yokoyama
doaj   +1 more source

Asymptotic Behavior on a Linear Self-Attracting Diffusion Driven by Fractional Brownian Motion

open access: yesFractal and Fractional, 2022
Let BH={BtH,t≥0} be a fractional Brownian motion with Hurst index 12≤H0 and σ,ν∈R are three parameters. The process is an analogue of the self-attracting diffusion (Cranston and Le Jan, Math. Ann.303 (1995), 87–93).
Litan Yan, Xue Wu, Xiaoyu Xia
doaj   +1 more source

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