Results 41 to 50 of about 3,632 (159)
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
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.
openaire +2 more sources
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
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
, 2012 We obtain two theorems extending the use of a saddlepoint approximation to multiparameter problems for likelihood ratio-like statistics which allow their use in permutation and rank tests and could be used in bootstrap approximations.
Kolassa, John, Robinson, John
core +1 more source
Approximation for probability of coverage in softly inhibitive cellular networks
Electronics Letters, Volume 60, Issue 17, September 2024.The author mainly develops an analytically tractable distribution of empty space distance and explores the PGFL's upper bound for stationary Strauss point processes. These findings significantly simplify the derivation of the Laplace transform of cumulative interference as well as the overall probability of coverage in Strauss‐modelled cellular ...
Chunlin Chen
wiley +1 more source
Stochastic credibility and optimal monetary policy
Australian Economic Papers, Volume 63, Issue S1, Page 124-134, May 2024.Abstract In this paper, I study optimal monetary policy in a simple New Keynesian model with loose commitment and stochastic credibility. The loose commitment framework breaks the commitment‐discretion dichotomy in optimal monetary policy problems and allows for intermediate cases between commitment and discretion.
Oscar To
wiley +1 more source
Saddlepoint approximation for Student's t-statistic with no moment conditions
, 2004 A saddlepoint approximation of the Student's t-statistic was derived by Daniels and Young [Biometrika 78 (1991) 169-179] under the very stringent exponential moment condition that requires that the underlying density function go down at least as fast as ...
Jing, Bing-Yi, Shao, Qi-Man, Zhou, Wang
core +3 more sources
Diagrammatic Theory of Anderson Impurity Models: Fermi and Non-Fermi Liquid Behavior
, 2000 We review a recently developed method, based on a pseudoparticle representation of correlated electrons, to describe both Fermi liquid and non-Fermi liquid behavior in quantum impurity systems.
Kroha, Johann, Wölfle, Peter
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A Semi-Analytical Analysis of Texture Collapse
, 1993 This study presents a simplified approach to studying the dynamics of global texture collapse. We derive equations of motion for a spherically symmetric field configuration using a two parameter ansatz.
A. Sornborger +10 more
core +1 more source