Results 161 to 170 of about 12,338 (264)

Multivariate Kalman filtering for spatio-temporal processes. [PDF]

open access: yesStoch Environ Res Risk Assess, 2022
Ferreira G, Mateu J, Porcu E.
europepmc   +1 more source

Beta Estimation Under Infrequent Trading: A Machine Learning Approach

open access: yesInternational Review of Finance, Volume 26, Issue 3, September 2026.
ABSTRACT When shares are traded infrequently, beta estimates are often severely biased. We find that machine learning methods significantly improve forecasts of the conventional beta proxy in this infrequently traded market. They generate superior beta forecasts, statistically and economically outperforming the traditional model used by practitioners ...
Alejandro Maldonado Mendoza   +1 more
wiley   +1 more source

After‐work unhealthy eating, work‐induced ego depletion and abusive supervision: The moderating role of narcissistic admiration and rivalry

open access: yesJournal of Occupational and Organizational Psychology, Volume 99, Issue 3, September 2026.
Abstract Abusive supervision, a harmful pattern of leadership behaviour, has consistently been found to have negative effects in the workplace. Drawing on self‐regulation and the work‐home resources model, we investigate the daily antecedents of abusive supervision from the work (ego depletion) and nonwork (unhealthy eating) domains. We examine leaders'
Xiaoyu Gan   +4 more
wiley   +1 more source

Likelihood Estimation for Stochastic Differential Equations with Mixed Effects

open access: yesScandinavian Journal of Statistics, Volume 53, Issue 3, Page 1061-1080, September 2026.
ABSTRACT Stochastic differential equations provide a powerful tool for modelling dynamic phenomena affected by random noise. When time series are observed for several experimental units, it is often the case that some of the parameters vary between the individual experimental units.
Fernando Baltazar‐Larios   +2 more
wiley   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

open access: yesAdvanced Materials, Volume 38, Issue 43, 3 August 2026.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang   +7 more
wiley   +1 more source

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