نتایج جستجو برای: nonlocal diffusions

تعداد نتایج: 15548  

Journal: :Automatica 2006
Qingshuo Song Gang George Yin Z. Zhang

This work is concerned with numerical methods for controlled regime-switching diffusions, and regime-switching jump diffusions. Numerical procedures based on Markov chain approximation techniques are developed. Convergence of the algorithms is derived by means of weak convergence methods. In addition, examples are also provided for demonstration purpose. 2006 Elsevier Ltd. All rights reserved.

2006
Alexandros Beskos Omiros Papaspiliopoulos Gareth O. Roberts Paul Fearnhead

The objective of this paper is to present a novel methodology for likelihood-based inference for discretely observed diffusions. We propose Monte Carlo methods, which build on recent advances on the exact simulation of diffusions, for performing maximum likelihood and Bayesian estimation.

Journal: :CoRR 2013
Ari Arapostathis

We present a theorem for verification of optimality of controlled diffusions under the average cost criterion with near-monotone running cost, without invoking any blanket stability assumptions. The implications of this result to the policy iteration algorithm are also discussed. Index Terms controlled diffusions, near-monotone costs, Hamilton–Jacobi–Bellman equation, policy iteration

2017
Peter Carr

Diffusions are widely used in finance due to their tractability. Driftless diffusions are needed to describe ratios of asset prices under a martingale measure. We provide a simple example of a tractable driftless diffusion which also has a bounded state space.

Journal: :international journal of nano dimension 0
r. ansari department of mechanical engineering, university of guilan, p.o. box 3756, rasht, iran h. rouhi department of mechanical engineering, university of guilan, p.o. box 3756, rasht, iran

in this paper, the stability characteristics of single-walled carbon nanotubes (swcnts) under the action of axial load are investigated. to this end, a nonlocal flügge shell model is developed to accommodate the small length scale effects. the analytical rayleigh-ritz method with beam functions is applied to the variational statement derived from the flügge-type buckling equations. molecular dy...

R Pilafkan, S.F Asbaghian Namin

This paper addresses the influence of boundary conditions and small-scale effect on the free vibration of nano-plates using molecular dynamics (MD) and nonlocal elasticity theory. Based on the MD simulations, Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) is used to obtain fundamental frequencies of single layered graphene sheets (SLGSs) which modeled in this paper as the mo...

Journal: :The Annals of Applied Probability 2005

2012
Michael Herrmann Barbara Niethammer Juan J.L. Velázquez

The hysteretic behavior of many-particle systems with non-convex free energy can be modeled by nonlocal Fokker-Planck equations that involve two small parameters and are driven by a timedependent constraint. In this paper we consider the fast reaction regime related to Kramers-type phase transitions and prove that the dynamics in the small-parameter limit can be described by a rate-independent ...

Journal: :Electronic Journal of Statistics 2022

We consider a class of multidimensional inhomogeneous diffusions whose drift coefficient depends on unknown parameter. Under some appropriate assumptions, we prove the local asymptotic mixed normality property for parameter from high-frequency observations when length observation window tends to infinity. To obtain result, use Malliavin calculus techniques and change measures. Our approach is a...

Journal: :iranian journal of science and technology (sciences) 2015
qing-tian deng

functionally gradedpoisson’s ratio structures have been developed for critical protection. in thispaper, the static bending and buckling of fgpr nanoscale beam are studied basedon the nonlocal timoshenko beam model, in which both young’s modulus andpoisson’s ratio are assumed to vary continuously in the thickness direction. byutilizing total potential energy principle, equilibrium equations are...

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