Now showing items 26741-26750 of 26805
High-dimensional principal component analysis with heterogeneous missingness
(Academic PressWiley Periodicals, Inc., 2022-11)
We study the problem of high-dimensional Principal Component Analysis (PCA) with missing observations. In a simple, homogeneous observation model, we show that an existing observed-proportion weighted (OPW) estimator of ...
Improving our Understanding of Evolutionary Paleoecology: A Celebration of the Work and Career of Tomasz K. Baumiller
(Museum of Paleontology, The University of Michigan, 2022-06-28)
Fish Predation on Clypeaster humilis from the Red Sea: Potential for recognition in the fossil record
(Museum of Paleontology, The University of Michigan, 2022-04-27)
Morphological Dynamics and Response Following the Dispersal of Ordovician–Silurian Diploporan Echinoderms to Laurentia
(Museum of Paleontology, The University of Michigan, 2022-04-27)
A Revision Of The Feather Star Genera Poecilometra And Strotometra (Echinodermata: Crinoidea: Charitometridae)
(Museum of Paleontology, The University of Michigan, 2022-06-09)
Systematics, Taphonomy, and Paleoecology of Millericrinids (Millericrinida, Articulata, Crinoidea) from the Late Jurassic of Spain
(Museum of Paleontology, The University of Michigan, 2022-03-31)
The Calceocrinid Puzzle
(Museum of Paleontology, The University of Michigan, 2022-03-31)
Athabasca River Avulsion Underway in the Peace-Athabasca Delta, Canada
(Alberta Research Council, ARC/AGS Open File ReportWiley Periodicals, Inc., 2023-03)
Avulsions change river courses and transport water and sediment to new channels impacting infrastructure, floodplain evolution, and ecosystems. Abrupt avulsion events (occurring over days to weeks) are potentially catastrophic ...
Statistical Study of Release Time and Its Energy Dependence of In Situ Energetic Electrons in Impulsive Solar Flares
(Wiley Periodicals, Inc.Springer Netherlands, 2023-03)
Using the fraction velocity dispersion analysis method, it has been shown recently that in two impulsive solar energetic electron (SEE) events, the release times of near-relativistic electrons at the Sun for outward-propagating ...