Results 31 to 40 of about 394,047 (263)

Using First-Passage Times to Analyze Tumor Growth Delay

open access: yesMathematics, 2021
A central aspect of in vivo experiments with anticancer therapies is the comparison of the effect of different therapies, or doses of the same therapeutic agent, on tumor growth.
Patricia Román-Román   +3 more
doaj   +1 more source

Tempered Fractional Equations for Quantum Transport in Mesoscopic One-Dimensional Systems with Fractal Disorder

open access: yesFractal 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
doaj   +1 more source

DIFFUSION PROCESSES AND COHERENT STATES [PDF]

open access: yesModern Physics Letters B, 1994
It is shown that uncertanity relations, as well as coherent and squeezed states, are structural properties of stochastic processes with Fokker–Planck dynamics. The quantum mechanical coherent and squeezed states are explicitly constructed via Nelson stochastic quantization.
DE MARTINO, Salvatore   +3 more
openaire   +2 more sources

Reduced Markovian Descriptions of Brownian Dynamics: Toward an Exact Theory

open access: yesFrontiers in Physics, 2022
We outline a reduction scheme for a class of Brownian dynamics which leads to meaningful corrections to the Smoluchowski equation in the overdamped regime.
Matteo Colangeli, Adrian Muntean
doaj   +1 more source

ANOVA for diffusions and Itô processes [PDF]

open access: yesThe Annals of Statistics, 2006
Itô processes are the most common form of continuous semimartingales, and include diffusion processes. This paper is concerned with the nonparametric regression relationship between two such Itô processes. We are interested in the quadratic variation (integrated volatility) of the residual in this regression, over a unit of time (such as a day). A main
Mykland, Per Aslak, Zhang, Lan
openaire   +4 more sources

Two Multi-Sigmoidal Diffusion Models for the Study of the Evolution of the COVID-19 Pandemic

open access: yesMathematics, 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
doaj   +1 more source

Comparing algebraic and numerical solutions of classical diffusion process equations in computational financial mathematics

open access: yesDiscrete Dynamics in Nature and Society, 2001
We revise the interrelations between the classical Black Scholes equation, the diffusion equation and Burgers equation. Some of the algebraic properties the diffusion equation shows are elaborated and qualitatively presented.
Andreas Ruffing   +2 more
doaj   +1 more source

Investigating Peer and Sorting Effects within an Adaptive Multiplex Network Model

open access: yesGames, 2019
Individuals have a strong tendency to coordinate with all their neighbors on social and economics networks. Coordination is often influenced by intrinsic preferences among the available options, which drive people to associate with similar peers, i.e ...
Francesca Lipari   +2 more
doaj   +1 more source

Latency-Bounded Target Set Selection in Signed Networks

open access: yesAlgorithms, 2020
It is well-documented that social networks play a considerable role in information spreading. The dynamic processes governing the diffusion of information have been studied in many fields, including epidemiology, sociology, economics, and computer ...
Miriam Di Ianni, Giovanna Varricchio
doaj   +1 more source

Mixed Similarity Diffusion for Recommendation on Bipartite Networks

open access: yesIEEE Access, 2017
In recommender systems, collaborative filtering technology is an important method to evaluate user preference through exploiting user feedback data, and has been widely used in industrial areas.
Ximeng Wang   +5 more
doaj   +1 more source

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