Results 21 to 30 of about 4,674,723 (297)

Investigation of New Methods for Numerical Stochastic Perturbation Theory in $\varphi^4$ Theory [PDF]

, 2017
Numerical stochastic perturbation theory is a powerful tool for estimating high-order perturbative expansions in lattice field theory. The standard algorithms based on the Langevin equation, however, suffer from several limitations which in practice ...
Mattia Dalla Brida, M. Garofalo, A. Kennedy   +2 more
semanticscholar   +1 more source

Stochastic Sensitivity Analysis of Cylindrical Shell

Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series, 2016
The paper deals with some chosen aspects of stochastic sensitivity structural analysis and its application in the engineering practice. The main aim of the study is to provide the generalized stochastic perturbation technique based on classical Taylor ...
Grzywiński Maksym
doaj   +1 more source

Asymptotic Behavior of Three Connected Stochastic Delay Neoclassical Growth Systems Using Spectral Technique

Mathematics, 2022
In this study, we consider a nonlinear system of three connected delay differential neoclassical growth models along with stochastic effect and additive white noise, which is influenced by stochastic perturbation.
Ishtiaq Ali, Samiullah Khan
semanticscholar   +1 more source

Stability and sensitivity analysis of stochastic programs with second order dominance constraints [PDF]

, 2010
In this paper we present stability and sensitivity analysis of a stochastic optimization problem with stochastic second order dominance constraints. We consider perturbation of the underlying probability measure in the space of regular measures equipped ...
Xu, Huifu, Liu, Yongchao
core   +2 more sources

Perturbation based stochastic isogeometric analysis for bending of functionally graded plates with the randomness of elastic modulus

Latin American Journal of Solids and Structures, 2020
author https://doi.org/10.1590/1679-78256066 Abstract We propose, in this paper, stochastic isogeometric analysis (SIGA) is a type of non-statistic approach in which combines the perturbation technique with the standard isogeometric analysis, in ...
H. Ta, P. Nguyen
semanticscholar   +1 more source

Homogenization of fiber-reinforced composites with random properties using the weighted least squares response function approach

Archives of Mechanics, 2011
The main aim of the paper is a determination of the basic probabilistic characteristics for the effective elasticity tensor of the periodic fiber-reinforced composites, using the generalized stochastic perturbation technique.
M. Kamiński
doaj   +1 more source

Numerical Approximation of Higher-Order Solutions of the Quadratic Nonlinear Stochastic Oscillatory Equation Using WHEP Technique

Journal of Applied Mathematics, 2013
This paper introduces higher-order solutions of the stochastic nonlinear differential equations with the Wiener-Hermite expansion and perturbation (WHEP) technique.
Mohamed A. El-Beltagy, Amnah S. Al-Johani   +1 more
doaj   +1 more source

Numerical Simulation of Some Steel Structural Elements with Uncertain Initial Porosity

Metals, 2021
The main research purpose of this work was to study the elasto-plastic responses of some fundamental steel structural elements exhibiting stochastic volumetric microvoids. The constitutive model of the steel material was consistent with the deterministic
Marcin Kamiński, Michał Strąkowski
doaj   +1 more source

Towards a Stochastic Complete Active Space Second Order Perturbation Theory [PDF]

, 2023
In this work an internally contracted Stochastic Complete Active Space Second Order Perturbation Theory, Stochastic–CASPT2, is reported. The method relies on stochastically sampled reduced density matrices (RDMs) up to rank four and con- tractions ...
Giovanni, Li Manni, Arta A., Safari, Robert J., Anderson   +2 more
core   +1 more source

An Application of Relative Entropy in Structural Safety Analysis of Elastoplastic Beam under Fire Conditions

Energies, 2022
The main aim of this work is to propose a new algorithm of reliability assessment for steel civil engineering structures subjected to fire temperatures.
Marcin Kamiński, Michał Strąkowski
doaj   +1 more source