Results 51 to 60 of about 5,999 (179)
Advances in Mechanical Engineering, 2020 In view of the lack of reliability research with correlated failure modes of the hoist disk shoes, the stochastic finite element method was used to analyze the reliability of multi-failure mode under emergency braking condition of disk shoe for deep well
Fengbin Ren +3 more
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Saddlepoint approximation for moment generating functions of truncated random variables
, 2005 We consider the problem of approximating the moment generating function (MGF) of a truncated random variable in terms of the MGF of the underlying (i.e., untruncated) random variable.
Butler, Ronald W., Wood, Andrew T. A.
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Quantum correction for electron transfer rates. Comparison of polarizable versus nonpolarizable descriptions of solvent [PDF]
, 1993 The electron transfer rate constant is treated using the spin-boson Hamiltonian model. The spectral density is related to the experimentally accessible data on the dielectric dispersion of the solvent, using a dielectric continuum approximation.
Marcus, R. A., Song, Xueyu
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ON BEHAVIOR OF THE SADDLEPOINT IN THE SADDLEPOINT APPROXIMATIONS [PDF]
Bulletin of informatics and cybernetics, 1999 Summary: In this paper we examine the behavior of the saddlepoint in the saddlepoint approximations for the \(M\)-estimators of location. The results of the study are useful when applying a numerical method to solve an equation with respect to the saddlepoint and when considering the approximations from a theoretical point of view.
openaire +2 more sources
InstaMap: instant‐NGP for cryo‐EM density maps
Acta Crystallographica Section D, Volume 81, Issue 4, Page 147-169, April 2025.Cryo‐EM density‐map inference, with fixed pose and contrast transfer function, using a multi‐resolution hash‐encoding framework called instant‐NGP, is described, together with its extension to heterogeneity inference by bending space with a per‐image vector field.Despite the parallels between problems in computer vision and cryo‐electron microscopy ...
Geoffrey Woollard +7 more
wiley +1 more source
Second order exponential asymptotic expansion for probabilistic load flow analysis
International Journal of Electrical Power & Energy SystemsDue to the inherent randomness in certain resources and load demands, load flow analysis must be performed using efficient and robust probabilistic methods to accurately capture power system uncertainties.
Hooman Basirat +2 more
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Saddlepoint Approximations in Statistics
The Annals of Mathematical Statistics, 1954 It is often required to approximate to the distribution of some statistic whose exact distribution cannot be conveniently obtained. When the first few moments are known, a common procedure is to fit a law of the Pearson or Edgeworth type having the same moments as far as they are given.
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International Journal for Numerical Methods in Engineering, Volume 125, Issue 24, 30 December 2024.Abstract This contribution covers the variational‐based modeling of non‐dissipative magneto‐mechanical systems using a vector potential approach and the thorough analysis and discussion of corresponding conforming finite element methods. Since the construction of divergence‐free finite element spaces explicitly enforcing the Coulomb gauge poses some ...
Philipp Gebhart, Thomas Wallmersperger
wiley +1 more source
Uniform saddlepoint approximations for ratios of quadratic forms [PDF]
, 2008 Ratios of quadratic forms in correlated normal variables which introduce noncentrality into the quadratic forms are considered. The denominator is assumed to be positive (with probability 1).
Butler, Ronald W., Paolella, Marc S.
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Journal of Computational Chemistry, Volume 45, Issue 32, Page 2727-2738, December 15, 2024.Singlet fission (SF) is a promising pathway to generate multiple charge carriers from a single photon. Possible applications reach from photovolatic cells to quantum computing. A key intermediate in the process is the singlet‐coupled triplet pair or multi‐excitonic (ME) state.
Timo Schulz, Christel M. Marian
wiley +1 more source