Results 51 to 60 of about 19,837,870 (284)
Fluctuation Relations for Diffusion Processes
, 2007 The paper presents a unified approach to different fluctuation relations for classical nonequilibrium dynamics described by diffusion processes. Such relations compare the statistics of fluctuations of the entropy production or work in the original ...
A. Giuliani +63 more
core +1 more source
Slowly modulated oscillations in nonlinear diffusion processes [PDF]
, 1977 It is shown here that certain systems of nonlinear (parabolic) reaction-diffusion equations have solutions which are approximated by oscillatory functions in the form R(ξ - cτ)P(t^*) where P(t^*) represents a sinusoidal oscillation on a fast time scale t*
Cohen, Donald S. +2 more
core +1 more source
An Image Encryption Algorithm Based on Josephus Traversing and Mixed Chaotic Map
IEEE Access, 2018 This paper proposes a new chaotic image encryption scheme, which employs Josephus traversing and mixed chaotic map. The scheme consists of three processes: key stream generation process; three-round scrambling process; and one-round diffusion process ...
Xingyuan Wang +2 more
doaj +1 more source
Stability and Recurrence of Regime-Switching Diffusion Processes [PDF]
SIAM Journal of Control and Optimization, 2014 We provide some criteria on the stability of regime-switching diffusion processes. Both the state-independent and state-dependent regime-switching diffusion processes with switching in a finite state space and an infinite countable state space are ...
J. Shao, F. Xi
semanticscholar +1 more source
SLKMC-II study of self-diffusion of small Ni clusters on Ni (111) surface [PDF]
, 2012 We studied self-diffusion of small 2D Ni islands (consisting of up to 10 atoms) on Ni (111) surface using a self-learning kinetic Monte Carlo (SLKMC-II) method with an improved pattern-recognition scheme that allows inclusion of both fcc and hcp sites in
Kara, Abdelkader +3 more
core +3 more sources
Criteria for transience and recurrence of regime-switching diffusion processes * [PDF]
, 2014 We provide some criteria for recurrence of regime-switching diffusion processes using the theory of M-matrix and the Perron-Frobenius theorem. State-independent and state-dependent regime-switching diffusion processes in a finite space or in an infinite ...
J. Shao
semanticscholar +1 more source
Diffusion of heat, energy, momentum, and mass in one-dimensional systems
, 2013 We study diffusion processes of local fluctuations of heat, energy, momentum, and mass in three paradigmatic one-dimensional systems. For each system, diffusion processes of four physical quantities are simulated and the cross correlations between them ...
D. Forster +8 more
core +1 more source
Remarks on drift estimation for diffusion processes [PDF]
, 2009 In applications such as molecular dynamics it is of interest to fit Smoluchowski and Langevin equations to data. Practitioners often achieve this by a variety of seemingly ad hoc procedures such as fitting to the empirical measure generated by the data,
Pokern, Yvo +2 more
core +2 more sources
Relativistic diffusion processes and random walk models [PDF]
, 2007 The nonrelativistic standard model for a continuous, one-parameter diffusion process in position space is the Wiener process. As well-known, the Gaussian transition probability density function (PDF) of this process is in conflict with special relativity,
C. W. Gardiner +17 more
core +2 more sources
Localisation and universal fluctuations in ultraslow diffusion processes [PDF]
, 2014 We study ultraslow diffusion processes with logarithmic mean squared displacement (MSD) ⟨ x 2 ( t ) ⟩ ≃ log γ t ?> . Comparison of annealed (renewal) continuous time random walks (CTRWs) with logarithmic waiting time distribution &psgr; ( τ ) ≃ 1 / ( τ ...
A. Godec +4 more
semanticscholar +1 more source