Results 111 to 120 of about 1,338,681 (301)
Advanced Functional Materials, EarlyView.Poly(acrylic acid) acts as a reaction‐time pH buffer during hydrothermal Sb2(S,Se)3 growth through its COOH/COO‐ equilibrium. When combined with ethanol‐regulated growth, this buffering strategy reduces Sb‐O related surface disorder, improves local electronic uniformity and carrier collection, and increases the champion solar‐cell efficiency to 10.25%,
Juhee Lee +7 more
wiley +1 more source
Estimation for state space models: quasi-likelihood and asymptotic quasi-likelihood approaches
, 2008 In this thesis, parameter estimation for multivariate heteroscedastic models with unspecified correlations is considered. Two alternative approaches for estimating the state variables and unknown parameters in non-linear and non-Gaussian state space ...
Raed Ahmad Hasan Al zghool (20281962)
core +1 more source
An approximate quasi-likelihood approach for error-prone failure time outcomes and exposures. [PDF]
Stat Med, 2021 Boe LA, Tinker LF, Shaw PA.
europepmc +1 more source
A research agenda on general-to-specific spatial model search [PDF]
Investigaciones Regionales - Journal of Regional Research, 2011 The paper sets up a nesting spatial regression model incorporating heteroskedastic shocks, and discusses hypothesis testing in both nested and nonnested cases in a quasi-likelihood framework, suggesting directions for future research effort.
Peter Burridge
doaj
Optimal predictions of powers of conditionally heteroskedastic processes [PDF]
In conditionally heteroskedastic models, the optimal prediction of powers, or logarithms, of the absolute process has a simple expression in terms of the volatility process and an expectation involving the independent process.
Francq, Christian, Zakoian, Jean-Michel
core
Advanced Functional Materials, EarlyView.For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa +3 more
wiley +1 more source
Classical and Bayesian Approach in Estimation of Scale Parameter of Nakagami Distribution
Journal of Probability and Statistics, 2016 Nakagami distribution is considered. The classical maximum likelihood estimator has been obtained. Bayesian method of estimation is employed in order to estimate the scale parameter of Nakagami distribution by using Jeffreys’, Extension of Jeffreys’, and
Kaisar Ahmad, S. P. Ahmad, A. Ahmed
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Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells
Advanced Functional Materials, EarlyView.In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong +16 more
wiley +1 more source
Quasi-likelihood analysis for Student-Lévy regression
Statistical Inference for Stochastic ProcessesAbstractWe consider the quasi-likelihood analysis for a linear regression model driven by a Student-t Lévy process with constant scale and arbitrary degrees of freedom. The model is observed at high frequency over an extending period, under which we can quantify how the sampling frequency affects estimation accuracy.
Hiroki Masuda +2 more
openaire +4 more sources
One-step local quasi-likelihood estimation
, 1997 Local quasi-likelihood estimation is a useful extension of the least-squares method, but its computation cost and algorithmic convergence problems make the procedure less appealing, particularly when it is iteratively used in the methods such as ...
J. Chen +3 more
core +1 more source