Results 151 to 160 of about 147,801 (260)

Nonlinear Schwarz Preconditioning for Quasi-Newton Methods

open access: yes
We propose the nonlinear restricted additive Schwarz (RAS) preconditioning strategy to improve the convergence speed of limited memory quasi-Newton (QN) methods. We consider both "left-preconditioning" and "right-preconditioning" strategies. As the application of the nonlinear preconditioning changes the standard gradients and Hessians to their ...
openaire   +2 more sources

Nonlinear Model Order Reduction on Polynomial Manifolds for Computational Homogenisation Problems

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Model order reduction (MOR) techniques utilising nonlinear approximation spaces can search for solutions to computational homogenisation problems on low‐dimensional approximation spaces. In combination with hyperreduction techniques, this allows for computations on representative volume elements (RVEs) to be accelerated by multiple orders of ...
Erik Faust, Lisa Scheunemann
wiley   +1 more source

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

open access: yesThe Canadian Journal of Chemical Engineering, Volume 104, Issue 5, Page 2206-2224, May 2026.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa   +4 more
wiley   +1 more source

Bridging Self‐Assessment Gaps: The Impact of Objective Structured Clinical Examination (OSCE) on Nursing Students' Competency Perception: A Pre‐Post‐Test Study

open access: yesNursing Open, Volume 13, Issue 5, May 2026.
ABSTRACT Aim Self‐assessment is critical in nursing education, enabling students to reflect on their cognitive and clinical skills while helping educators identify gaps in competencies. Combining subjective self‐assessment with the objectivity of Objective Structured Clinical Examinations (OSCEs) supports learning adjustments.
Virginia La Rosa‐Salas   +4 more
wiley   +1 more source

A Latent‐factor MCACE Model for Multidimensional Outcomes and Treatment Noncompliance with Application to a Longitudinal Trial of Arthritis Health Journal

open access: yesStatistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT Real‐world randomized controlled trials (RCTs) evaluating multifaceted interventions often employ multiple study outcomes to measure treatment effects on a small set of underlying constructs. Motivated by a longitudinal RCT evaluating a behavioural intervention, the Arthritis Health Journal (AHJ), we propose a latent‐factor multivariate ...
Lulu Guo   +3 more
wiley   +1 more source

Variable Selection in Mixed‐Effects Location‐Scale and Location‐Shift Models

open access: yesStatistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT When ordinal responses to questionnaires structured on the basis of Likert scales show differing variability or heterogeneity in subgroups of the population, appropriate regression approaches that are able to take this issue into account are the location‐scale and location‐shift model.
Moritz Berger, Maria Iannario
wiley   +1 more source

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