Results 11 to 20 of about 236,502 (262)

Numerical techniques for stochastic foot and mouth disease epidemic model with the impact of vaccination

open access: yesAdvances in Difference Equations, 2020
The spread of an epidemic diseases is stochastic in nature. It is more realistic to include this stochasticity when modelling the dynamics of a communicable disease.
Kamaleldin Abodayeh   +5 more
doaj   +1 more source

The Feynman–Kac Representation and Dobrushin–Lanford–Ruelle States of a Quantum Bose-Gas

open access: yesMathematics, 2020
This paper focuses on infinite-volume bosonic states for a quantum particle system (a quantum gas) in Rd. The kinetic energy part of the Hamiltonian is the standard Laplacian (with a boundary condition at the border of a ‘box’).
Yuri Suhov, Mark Kelbert, Izabella Stuhl
doaj   +1 more source

Improved Alkali–Silica Reaction Forecast in Concrete Infrastructures through Stochastic Climate Change Impact Analysis

open access: yesInfrastructures, 2023
The assessment of concrete infrastructures’ functionality during natural hazards is fundamental in evaluating their performance and emergency response.
Md Asif Rahman, Yang Lu
doaj   +1 more source

Infinite number of stable periodic solutions for an equation with negative feedback

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
For all $\mu>0$, a locally Lipschitz continuous map $f$ with $xf\left(x\right)>0$, $x\in\mathbb{R}\setminus\left\{ 0\right\} $, is constructed, such that the scalar equation $\dot{x}\left(t\right)=-\mu x\left(t\right)-f\left(x\left(t-1\right)\right ...
Gabriella Vas
doaj   +1 more source

Carbon Emission Evaluation Method and Comparison Study of Transformer Substations Using Different Data Sources

open access: yesBuildings, 2023
The construction of transformer substations in transmission lines is a systematic, technical, and complex project with the need for numerous materials and resources. Under the development of the green economy, the requirements for energy conservation and
Xigang Liu   +8 more
doaj   +1 more source

On the fundamental solution of linear delay differential equations with multiple delays

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
For a class of linear autonomous delay differential equations with parameter $\alpha$ we give upper bounds for the integral $\int_{0}^{\infty}\left|X\left(t,\alpha\right)\right|\mbox{d}t$ of the fundamental solution $X\left(\cdot,\alpha\right)$.
Gabriella Vas, Tibor Krisztin
doaj   +1 more source

Modeling and Reasoning of Contexts in Smart Spaces Based on Stochastic Analysis of Sensor Data

open access: yesApplied Sciences, 2022
In the last decade, smart spaces and automatic systems have gained significant popularity and importance. Moreover, as the COVID-19 pandemic continues, the world is seeking remote intervention applications with autonomous and intelligent capabilities ...
Jae Woong Lee, Abdelsalam Helal
doaj   +1 more source

Gevrey class regularity for analytic differential-delay equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
This paper considers differential-delay equations of the form \[x'(t)=p(t)x(t-1),\] where the coefficient function $p\colon\mathbb{R}\rightarrow\mathbb{C}$ is analytic and not bounded on any $\delta$-neighborhood of the intervals $\left(-\infty,\gamma ...
Roger Nussbaum, Gabriella Vas
doaj   +1 more source

Detecting an Unknown Abrupt Change in the Band Center of the Fast-Fluctuating Gaussian Random Process

open access: yesMeasurement Science Review, 2020
The generalized maximum likelihood algorithm is introduced for detecting the abrupt change in the band center of a fast-fluctuating Gaussian random process with the uniform spectral density.
Chernoyarov Oleg   +3 more
doaj   +1 more source

A limit theorem for singular stochastic differential equations

open access: yesModern Stochastics: Theory and Applications, 2016
We study the weak limits of solutions to SDEs \[ dX_{n}(t)=a_{n}\big(X_{n}(t)\big)\hspace{0.1667em}dt+dW(t),\] where the sequence $\{a_{n}\}$ converges in some sense to $(c_{-}\mathbb{1}_{x0})/x+\gamma \delta _{0}$.
Andrey Pilipenko, Yuriy Prykhodko
doaj   +1 more source

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