Results 21 to 30 of about 1,218,358 (130)

Non‐negative Gaussian estimation of variance components in random effects models

open access: yesCanadian Journal of Statistics, Volume 54, Issue 2, June 2026.
Abstract When used to estimate variance components (VCs), confidence intervals (CIs) can be truncated at zero, have a point estimate not in the quoted CI, be empty with positive probability, or be all‐inclusive. This is because they have conflicting dual roles, since they are considered to cover the parameter with a specified probability while also ...
André Plante, Michael Plante
wiley   +1 more source

Network Polymer Properties Engineered Through Polymer Backbone Dispersity and Structure

open access: yesAngewandte Chemie, Volume 136, Issue 21, May 21, 2024.
Polymer networks using chains of distinct backbone length variability were developed with control over both length and dispersity. The impact of primary chain length dispersity on material properties including strength, swelling, adhesion and extensibility were evaluated.
Ibrahim O. Raji   +7 more
wiley   +2 more sources

Identity Play: Middle School Youths' Provisional Self‐Making in Horizon‐Expanding STEM Spaces

open access: yesScience Education, Volume 110, Issue 3, Page 780-802, May 2026.
ABSTRACT This study introduces identity play as an analytic construct for science education to explore improvisational dimensions of middle school students' STEM identity development in multiple out‐of‐school learning experiences focused on environmental problem‐solving.
Heidi B. Carlone, Alison K. Mercier
wiley   +1 more source

De Vi Legis In Praeteritum Iusta Pauca Disserit Et ... Ioannem Fridericum Eisenhart [PDF]

open access: yes
Glückwunschschrift für Johann Friedrich Eisenhart zur Dr. jur.-Promotion, Helmstedt, 18.
Seip, Anton (gnd: 122444671)
core   +1 more source

Maximum likelihood sampling properties of the estimator of the Smith selection index vector of coefficients

open access: yesCrop Science, Volume 66, Issue 1, January/February 2026.
Abstract The main Smith selection index objective is to predict the unobservable plant net genetic merit (H$H$). When the phenotypic (P${\bm{P}}$) and genotypic (G${\bm{G}}$) covariance matrices are estimated, the estimator of this index (Î$\hat{I}$) is the best predictor of H$H$ only if the estimator of its vector of coefficients b${\bm{b}}$ (b̂${\bm{
J. Jesús Cerón‐Rojas   +4 more
wiley   +1 more source

Superior Primary Stability of a Knotless Double‐Row Construct Compared to Mason‐Allen Repair for Anatomical Refixation of Gluteal Tendons—Biomechanical Human Cadaver Study

open access: yesOrthopaedic Surgery, Volume 17, Issue 10, Page 2973-2981, October 2025.
Hip Bridge technique demonstrated significantly higher biomechanical failure load compared to the Mason‐Allen repair; with greater primary stability and reduced failure variability. This may be attributed to enhanced anatomical footprint restoration, which is particularly advantageous for weakened gluteal tendons in elderly patients.
Vanessa Twardy   +7 more
wiley   +1 more source

Trabecular Architecture of the Proximal Tibia in Extant Hominids

open access: yesAmerican Journal of Biological Anthropology, Volume 187, Issue 3, July 2025.
Relative bone volume (rBV/TV) mean models of the tibial plateau and tibial condyles in humans, gorillas, chimpanzees, and orangutans. Horizontal black lines through the superior view mean models show where the cross‐sectional coronal planes are positioned. Hollow black circles indicate section plane position.
Andrea Lukova   +7 more
wiley   +1 more source

Hidden symmetries of Eisenhart-Duval lift metrics and the Dirac equation with flux

open access: yes, 2020
The Eisenhart-Duval lift allows embedding nonrelativistic theories into a Lorentzian geometrical setting. In this paper we study the lift from the point of view of the Dirac equation and its hidden symmetries.
Marco Cariglia
core  

Jacobi-Maupertuis-Eisenhart metric and geodesic flows

open access: yes, 2017
International audienceThe Jacobi metric derived from the line element by one of the authors is shown to reduce to the standard formulation in the non-relativistic approximation. We obtain the Jacobi metric for various stationary metrics.
Sumanto Chanda   +5 more
core   +1 more source

What about your friends: A critical qualitative inquiry of the experiences of Black and Latiné women in computing

open access: yesJournal of Engineering Education, Volume 114, Issue 3, July 2025.
Abstract Background Computing degree programs have struggled immensely over the years with broadening participation in the field. In the United States, scholars and educators alike have grappled with the many barriers that impede the participation of women and people of color and exacerbate the education debt so prevalent in computing.
Monique S. Ross   +5 more
wiley   +1 more source

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