Results 71 to 80 of about 6,587 (215)

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

Density Formula in Malliavin Calculus by Using Stein’s Method and Diffusions

Mathematics
Let G be a random variable of functionals of an isonormal Gaussian process X defined on some probability space. Studies have been conducted to determine the exact form of the density function of the random variable G.
Hyun-Suk Park
doaj   +1 more source

A Generalized Equilibrium Transform with Application to Error Bounds in the Rényi Theorem with No Support Constraints

Mathematics, 2020
We introduce a generalized stationary renewal distribution (also called the equilibrium transform) for arbitrary distributions with finite nonzero first moment and study its properties.
Irina Shevtsova, Mikhail Tselishchev
doaj   +1 more source

Stein's Method and Characters of Compact Lie Groups

, 2008
Stein's method is used to study the trace of a random element from a compact Lie group or symmetric space. Central limit theorems are proved using very little information: character values on a single element and the decomposition of the square of the ...
A. Klyachko, A. Soshnikov, B. Collins, E. Dueñez, E. Meckes, F. Götze, J. Fulman, J.P. Keating, Jason Fulman, K. Johansson, L. Pastur, L. Vretare, N. Katz, P. Diaconis, P. Diaconis, P. Diaconis, R. Proctor, T. Baker, Y. Rinott   +18 more
core   +2 more sources

Stein’s method for nonconventional sums

Electronic Communications in Probability, 2018
We obtain almost optimal convergence rate in the central limit theorem for "nonconevntional" sums of the form $S_N=N^{-\frac12}\sum_{n=1}^N (F( _n, _{2n},..., _{\ell n})-\bar F)$.
openaire   +3 more sources

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

The Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

Stein's method, Palm theory and Poisson process approximation

, 2004
The framework of Stein's method for Poisson process approximation is presented from the point of view of Palm theory, which is used to construct Stein identities and define local dependence.
Chen, Louis H. Y., Xia, Aihua
core   +1 more source

Autoantibodies to Joint‐Related Peptides Are Associated with Onset of Rheumatoid Arthritis in Presymptomatic Seronegative Individuals

Arthritis &Rheumatology, Accepted Article.
Objective To identify autoantibodies in presymptomatic individuals that associate with the onset of rheumatoid arthritis (RA), and to distinguish early RA from osteoarthritis (OA), particularly in individuals lacking classic RA serological markers. Methods We analyzed serum and plasma from three cohorts: pre‐symptomatic individuals who later developed ...
Outi Sareila, Linda Johansson, Anders Lundquist, Monica Leu Agelii, Lei Cheng, Yibo He, Erik Lönnblom, Maria Andersson, Jan Kihlberg, Anders Esberg, Inger Gjertsson, Rikard Holmdahl, Solbritt Rantapää‐Dahlqvist   +12 more
wiley   +1 more source

The Empirical Bayes Estimators of the Variance Parameter of the Normal Distribution with a Normal-Inverse-Gamma Prior Under Stein’s Loss Function

Axioms
For the hierarchical normal and normal-inverse-gamma model, we derive the Bayesian estimator of the variance parameter in the normal distribution under Stein’s loss function—a penalty function that treats gross overestimation and underestimation equally ...
Ying-Ying Zhang
doaj   +1 more source

Estimation of Quantum Fisher Information via Stein's Identity in Variational Quantum Algorithms [PDF]

Quantum
The Quantum Fisher Information Matrix (QFIM) plays a crucial role in quantum optimization algorithms such as Variational Quantum Imaginary Time Evolution and Quantum Natural Gradient Descent.
Mourad Halla
doaj   +1 more source