Results 11 to 20 of about 1,182,694 (285)
Dispersive Transport Described by the Generalized Fick Law with Different Fractional Operators
Fractal and Fractional, 2020 The approach based on fractional advection–diffusion equations provides an effective and meaningful tool to describe the dispersive transport of charge carriers in disordered semiconductors.
Renat T. Sibatov, HongGuang Sun
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Network Models and Simulation Analytics for Multi-scale Dynamics of Biological Invasions
Frontiers in Big Data, 2022 Globalization and climate change facilitate the spread and establishment of invasive species throughout the world via multiple pathways. These spread mechanisms can be effectively represented as diffusion processes on multi-scale, spatial networks.
Abhijin Adiga +6 more
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Growth Curves Modelling and Its Application
Engineering Proceedings, 2023 In this article, we compare two ways of modelling measures of fetal growth. The goal is to impute the missing information for certain ultrasound measurements that are observed at different times and with different numbers of observations.
Ana García-Burgos +5 more
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Controlled diffusion processes [PDF]
, 2005 This article gives an overview of the developments in controlled diffusion processes, emphasizing key results regarding existence of optimal controls and their characterization via dynamic programming for a variety of cost criteria and structural ...
Borkar, Vivek S.
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Perturbed Skew Diffusion Processes
Mathematics, 2023 This work investigates whether there uniquely exists a solution to the perturbed skew diffusion process. We construct the solution by iteration and divide the whole time interval into parts on which we disperse the perturbed skew diffusion process into ...
Yingxu Tian, Haoyan Zhang
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Two Multi-Sigmoidal Diffusion Models for the Study of the Evolution of the COVID-19 Pandemic
Mathematics, 2021 A proposal is made to employ stochastic models, based on diffusion processes, to represent the evolution of the SARS-CoV-2 virus pandemic. Specifically, two diffusion processes are proposed whose mean functions obey multi-sigmoidal Gompertz and Weibull ...
Antonio Barrera +3 more
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Reaction-diffusion processes with nonlinear diffusion [PDF]
Physical 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.
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Diffusion Processes in Turbulent Magnetic Fields [PDF]
, 2007 We study of the effect of turbulence on diffusion processes within magnetized medium. While we exemplify our treatment with heat transfer processes, our results are quite general and are applicable to different processes, e.g. diffusion of heavy elements.
Lazarian, Alex
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Fractal and Fractional, 2019 New aspects of electron transport in quantum wires with Lévy-type disorder are described. We study the weak scattering and the incoherent sequential tunneling in one-dimensional quantum systems characterized by a tempered Lévy stable ...
Renat T. Sibatov, HongGuang Sun
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Parametric Estimation of Diffusion Processes: A Review and Comparative Study
Mathematics, 2021 This paper provides an in-depth review about parametric estimation methods for stationary stochastic differential equations (SDEs) driven by Wiener noise with discrete time observations.
Alejandra López-Pérez +2 more
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