Results 201 to 210 of about 34,973 (262)

Fractional Brownian motion and long term clinical trial recruitment. [PDF]

J Stat Plan Inference, 2011
Zhang Q, Lai D.
europepmc   +1 more source

Monitoring panels of sparse functional data

Journal of Time Series Analysis, Volume 47, Issue 3, Page 660-674, May 2026.
Panels of random functions are common in applications of functional data analysis. They often occur when sequences of functions are observed at a number of different locations. We propose a methodology to monitor for structural breaks in such panels and to identify the changing components with statistical certainty.
Tim Kutta, Agnieszka Jach, Piotr Kokoszka   +2 more
wiley   +1 more source

Change Point Analysis for Functional Data Using Empirical Characteristic Functionals

Journal of Time Series Analysis, Volume 47, Issue 3, Page 612-631, May 2026.
ABSTRACT We develop a new method to detect change points in the distribution of functional data based on integrated CUSUM processes of empirical characteristic functionals. Asymptotic results are presented under conditions allowing for low‐order moments and serial dependence in the data establishing the limiting null‐distribution of the proposed test ...
Lajos Horváth, Gregory Rice, Jeremy VanderDoes   +2 more
wiley   +1 more source

Socioeconomic Gauging of Brown and Levy Power Motions. [PDF]

Entropy (Basel)
Eliazar I.
europepmc   +1 more source

Phylogenetic constraints, conservatism, and convergence shape three‐dimensional variation in flower morphology of a tropical orchid radiation

The Plant Journal, Volume 126, Issue 3, May 2026.
SUMMARY Despite advances in phylogenetic comparative methods, challenges remain to distinguish between various macroevolutionary patterns of phenotypic variation (e.g., conservatism, convergence) and to infer their underlying proximate (genetic, developmental) or ultimate (selective versus neutral) causes.
Silvia Artuso, Alexander Gamisch, Yannick M. Staedler, Jürg Schönenberger, Hans Peter Comes   +4 more
wiley   +1 more source

Evaluating Bayesian Morphological Clocks for Estimating a Dated Phylogeny in a Relict and Fossil‐Rich Family of Wasps (Hymenoptera, Chrysidoidea)

Zoologica Scripta, Volume 55, Issue 3, Page 448-463, May 2026.
ABSTRACT In recent years, a wide array of tools originally developed for molecular dating analyses has been adapted for use within a morphological clock perspective. This is of paramount relevance for taxonomic groups that cannot be sampled in forms suitable for DNA extraction.
Anderson Lepeco, Gabriel A. R. Melo, Brunno B. Rosa   +2 more
wiley   +1 more source

Self‐Affine Scaling of Earth's Islands

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Earth's relief is approximately self‐affine, meaning a zoom‐in on a small region looks statistically similar to a large region upon rescaling. Fractional Brownian surfaces give an idealized self‐affine model of Earth's relief with one parameter, the Hurst exponent H $H$, characterizing the roughness of the surface.
Matthew Oline, Jeremy Hoskins, David Seekell, Mary Silber, B. B. Cael   +4 more
wiley   +1 more source

Observation of super-ballistic Brownian motion in liquid. [PDF]

Sci Adv
Boynewicz J, Thumann MC, Raizen MG.
europepmc   +1 more source

ProT-GFDM: A generative fractional diffusion model for protein generation. [PDF]

Comput Struct Biotechnol J
Liang X, Ma W, Paquet E, Viktor H, Michalowski W.   +4 more
europepmc   +1 more source

Discrete stochastic maximal regularity. [PDF]

Math Ann
Evangelopoulos-Ntemiris F, Veraar M.
europepmc   +1 more source