Results 21 to 30 of about 6,587,940 (291)

Quadrinomial trees with stochastic volatility to value real options [PDF]

open access: yesJournal of Economics Finance and Administrative Science, 2021
Purpose – The purpose of this article is to propose a detailed methodology to estimate, model and incorporate the non-constant volatility onto a numerical tree scheme, to evaluate a real option, using a quadrinomial multiplicative recombination.
Freddy H. Marín-Sánchez   +2 more
doaj   +1 more source

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

Influence of defect clusters on diffusion processes in UO2+x [PDF]

open access: yes, 2009
Thermodynamic and transport properties of hyperstoichiometric uranium dioxide,UO2+x, constitute a key issue in the application of this material for nuclear fuel since they are closely related to many chemical and physical processes, e.g., diffusion or ...
Riahi, Fatma, Mekki, Djamel Eddine
core   +1 more source

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

Oxygen and cation diffusion processes in oxygen ion conductors [PDF]

open access: yes, 2007
We discuss oxygen and cation diffusion processes in oxygen ion conductors. While the high oxygen diffusivity determines the proper oxygen ion conductivity, slow cation diffusion processes are important for sintering and degradation processes.
Martin, Manfred
core   +1 more source

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

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