Results 51 to 60 of about 1,089,281 (288)

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

The Distribution and Quantiles of the Sample Mean from a Stationary Process

open access: yesAxioms
Edgeworth–Cornish–Fisher expansions are hugely important, as they give the distribution, density and quantiles of any standard estimate. Here we show that the sample mean of a univariate or multivariate stationary process is a standard estimate, so that ...
Christopher S. Withers
doaj   +1 more source

Set-Valued Stationary Processes

open access: yesJournal of Multivariate Analysis, 1997
This paper deals with set-valued processes \(F=\{F_t: F_t\) is a random set \( \forall t\in \mathbb{R}_+\}\) in a real separable Banach space \((X,\| \cdot\|)\) with the dual space \(X^*\). The organization of the paper is as follows. In Section 1 the authors present many of the new results (expectation, multivalued conditional expectation), ideas and ...
Wang, Rongming, Wang, Zhenpeng
openaire   +2 more sources

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert   +7 more
wiley   +1 more source

Use of infinity concept in chemistry and chemical technology

open access: yesТонкие химические технологии, 2011
The paper considers a number of mathematical models of chemical and chemical-engineering objects that use the concept of infinity. We allocated almost unrealizable processes, in the simulation of which infinity shows itself as a phantom.
L. A. Serafimov   +2 more
doaj  

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky   +5 more
wiley   +1 more source

Stationarity and ergodicity for an affine two factor model

open access: yes, 2013
We study the existence of a unique stationary distribution and ergodicity for a 2-dimensional affine process. The first coordinate is supposed to be a so-called alpha-root process with \alpha\in(1,2]. The existence of a unique stationary distribution for
Duffie   +11 more
core   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

Exact Integration of Stationary Gaussian Process Kernels

open access: yesIEEE Open Journal of Signal Processing
In applications such as object tracking and financial time series, it is often desirable to model stochastic processes that are the integral of another stationary process, leading potentially to non-stationarity and infinite variance.
Ralph J. McDougall   +2 more
doaj   +1 more source

The tail of the stationary distribution of a random coefficient AR(q) model

open access: yes, 2004
We investigate a stationary random coefficient autoregressive process. Using renewal type arguments tailor-made for such processes, we show that the stationary distribution has a power-law tail.
Kluppelberg, Claudia   +1 more
core   +2 more sources

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