Results 11 to 20 of about 613,587 (145)

Dephasing Process of a Single Atom Interacting with a Two-Mode Field

open access: yesEntropy, 2021
We consider the interaction of a qubit system with a two-mode field in the presence of multi-photon transition and phase damping effect. We use the master equation to obtain the density operator when the qubit is initially prepared in its excited state ...
Eied M. Khalil   +4 more
doaj   +1 more source

Kernel density estimation and transition maps of Moldavian Neolithic and Eneolithic settlement

open access: yesData in Brief, 2018
The data presented in this article are related to the research article entitled “Neo-Eneolithic settlement pattern and salt exploitation in Romanian Moldavia” (Brigand and Weller, 2018) [1]. Kernel density estimation (KDE) is used in order to move beyond
Robin Brigand, Olivier Weller
doaj   +1 more source

Accuracy of discrete approximation for integral functionals of Markov processes

open access: yesModern Stochastics: Theory and Applications, 2015
The article is devoted to the estimation of the convergence rate of integral functionals of a Markov process. Under the assumption that the given Markov process admits a transition probability density differentiable in t and the derivative has an ...
Iurii Ganychenko   +2 more
doaj   +1 more source

Quark-Hadron Phase Transitions in Viscous Early Universe [PDF]

open access: yes, 2012
Based on hot big bang theory, the cosmological matter is conjectured to undergo QCD phase transition(s) to hadrons, when the universe was about $1-10 \mu$s old.
A. Tawfik   +5 more
core   +2 more sources

Adaptive estimation of the transition density of a Markov chain [PDF]

open access: yes, 2006
In this paper a new estimator for the transition density $\pi$ of an homogeneous Markov chain is considered. We introduce an original contrast derived from regression framework and we use a model selection method to estimate $\pi$ under mild conditions ...
Lacour, Claire
core   +3 more sources

Least squares type estimation of the transition density of a particular hidden Markov chain [PDF]

open access: yes, 2008
In this paper, we study the following model of hidden Markov chain: $Y_i=X_i+\epsilon_i$, $i=1,...,n+1$ with $(X_i)$ a real-valued stationary Markov chain and $(\epsilon_i)_{1\leq i\leq n+1}$ a noise having a known distribution and independent of the ...
Lacour, Claire
core   +3 more sources

Parameter Estimation of the Extended Vasiček Model

open access: yesWalailak Journal of Science and Technology, 2011
In this paper, an estimate of the drift and diffusion parameters of the extended Vasiček model is presented. The estimate is based on the method of maximum likelihood.
Sanae RUJIVAN
doaj   +1 more source

Two-photon resonance fluorescence of two interacting nonidentical quantum emitters

open access: yesPhysical Review Research, 2021
We study a system of two interacting, nonidentical quantum emitters driven by a coherent field. We focus on the particular condition of two-photon resonance and obtain analytical expressions for the stationary density matrix of the system and observables
Alejandro Vivas-Viaña   +1 more
doaj   +1 more source

Study on the Temporal and Spatial Evolution of China’s Carbon Dioxide Emissions and Its Emission Reduction Path

open access: yesEnergies, 2023
Based on the total carbon emission data of 30 provinces and cities in China from 2000 to 2020, this paper used non-parametric kernel density estimation and traditional and spatial Markov probability transfer matrix methods to explore the temporal and ...
Wei Shi   +7 more
doaj   +1 more source

Maximum-likelihood estimation for diffusion processes via closed-form density expansions [PDF]

open access: yes, 2013
This paper proposes a widely applicable method of approximate maximum-likelihood estimation for multivariate diffusion process from discretely sampled data.
Li, Chenxu
core   +1 more source

Home - About - Disclaimer - Privacy