Results 21 to 30 of about 68,879 (310)

Consequences of Model Misspecification for Maximum Likelihood Estimation with Missing Data

open access: yesEconometrics, 2019
Researchers are often faced with the challenge of developing statistical models with incomplete data. Exacerbating this situation is the possibility that either the researcher’s complete-data model or the model of the missing-data mechanism is ...
Richard M. Golden   +3 more
doaj   +1 more source

Validating a 2-mode asymptotic expansion in computational bifurcation theory (Before introducing HDN for differential operation)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
For error-free computation of high-derivatives of mathematical functions used in engineering applications, hyper-dual numbers (HDN) are receiving much attention in computational mechanics.
Fumio FUJII   +3 more
doaj   +1 more source

Asymptotic Theory of Quantum Channel Estimation

open access: yesPRX Quantum, 2021
The quantum Fisher information (QFI), as a function of quantum states, measures the amount of information that a quantum state carries about an unknown parameter.
Sisi Zhou, Liang Jiang
doaj   +1 more source

Robustness and Efficiency Considerations When Testing Process Reliability with a Limit of Detection

open access: yesMathematics
Processes in biotechnology are considered reliable if they produce samples satisfying regulatory benchmarks. For example, laboratories may be required to show that levels of an undesirable analyte rarely (e.g., in less than 5% of samples) exceed a ...
Laura S. Bumbulis, Richard J. Cook
doaj   +1 more source

Roy Glauber and asymptotic diffraction theory

open access: yesSciPost Physics Proceedings, 2020
This is a review of Glauber's asymptotic diffraction theory, in which diffractive scattering is described in terms of interference between semiclassical amplitudes, resulting from a stationary-phase approximation.
Per Osland
doaj   +1 more source

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

New criteria on global asymptotic synchronization of Duffing-type oscillator system

open access: yesNonlinear Analysis, 2020
In this paper, we are concerned with global asymptotic synchronization of Duffing-type oscillator system. Without using matrix measure theory, graph theory and LMI method, which are recently widely applied to investigating global exponential/asymptotic ...
Xuejun Yi, Ling Ren, Zhengqiu Zhang
doaj   +1 more source

Scaling and asymptotic scaling in the SU(2) gauge theory

open access: yes, 1993
Fingberg J, Heller UM, Karsch F. Scaling and asymptotic scaling in the SU(2) gauge theory. Nuclear Physics, B. 1993;392(2):493-517.We determine the critical couplings for the deconfinement phase transition in SU(2) gauge theory on N(tau) x N(sigma)3 ...
Karsch, Frithjof   +2 more
core   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

A New Family of Consistent and Asymptotically-Normal Estimators for the Extremal Index

open access: yesEconometrics, 2015
The extremal index (θ) is the key parameter for extending extreme value theory results from i.i.d. to stationary sequences. One important property of this parameter is that its inverse determines the degree of clustering in the extremes.
Jose Olmo
doaj   +1 more source

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