Results 101 to 110 of about 15,467 (237)

Reinforcement Learning for Jump‐Diffusions, With Financial Applications

Mathematical Finance, EarlyView.
ABSTRACT We study continuous‐time reinforcement learning (RL) for stochastic control in which system dynamics are governed by jump‐diffusion processes. We formulate an entropy‐regularized exploratory control problem with stochastic policies to capture the exploration–exploitation balance essential for RL.
Xuefeng Gao, Lingfei Li, Xun Yu Zhou
wiley   +1 more source

On the Exact Limiting Distribution of a Volatility Target Index

Mathematical Finance, EarlyView.
ABSTRACT Assuming a lognormal distribution for the underlying risky asset, we study the limiting distribution of a volatility target index as the rebalancing time step approaches zero. Two limit theorems (a strong law of large numbers and a central limit theorem) are established, and as an application, the exact limiting distribution is derived.
Xuan Liu, Michel Gauthier
wiley   +1 more source

Diversifying Investments and Maximizing Sharpe Ratio: A Novel Quadratic Unconstrained Binary Optimization Formulation

Quantum Reports
The optimization of investment portfolios represents a pivotal task within the field of financial economics. Its objective is to identify asset combinations that meet specified criteria for return and risk.
Mirko Mattesi, Luca Asproni, Christian Mattia, Simone Tufano, Giacomo Ranieri, Davide Caputo, Davide Corbelletto   +6 more
doaj   +1 more source

Physical Appearance Anxiety and Eating Disorders Symptomatology: A Systematic Review and Meta‐Analysis

Scandinavian Journal of Psychology, EarlyView.
ABSTRACT The present study aimed to assess the link between physical appearance anxiety (PAA) and eating disorder (ED) symptomatology by a meta‐analysis of existing literature. Eligible studies were searched across six electronic databases up until November 20, 2025. Pooled effect sizes (r) were calculated using random‐effects models.
Manuel Alcaraz‐Ibáñez, Adrian Paterna, Almudena F. Diaz‐Carrasco, Alvaro Sicilia, Mark D. Griffiths   +4 more
wiley   +1 more source

Prebiotic Bimuno® GOS reduces illness symptoms and supports gut barrier function and immunity after intermittent exercise in the heat

Experimental Physiology, EarlyView.
Abstract Exercise in hot climates increases the risk of gastrointestinal (GI) disruption and respiratory illness. We investigated the effects of a 42 day prebiotic intervention on markers of intestinal epithelial injury, GI discomfort and immunity following football specific exercise in the heat and daily upper respiratory illness.
Connor J. Parker, Samantha J. Abbott, Luke R. Butterfield, Kirsty A. Hunter, Michael A. Johnson, Graham R. Sharpe, Neil C. Williams   +6 more
wiley   +1 more source

Artificial intelligence‐powered plant phenomics: Progress, challenges, and opportunities

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Artificial intelligence (AI), a key driver of the Fourth Industrial Revolution, is being rapidly integrated into plant phenomics to automate sensing, accelerate data analysis, and support decision‐making in phenomic prediction and genomic selection.
Xu Wang, Daeun Choi, Damian Adams, Jaehyun Ahn, Kelly Balmant, Raquel Dias, Carlos D. Messina, Rafael Muñoz‐Carpena, Vance M. Whitaker, Haipeng Yu, Ziwen Yu, Chang Zhao, Changying Li   +12 more
wiley   +1 more source

Dual‐class shares and capital allocation decisions: Evidence from share repurchases and M&A activities

Review of Financial Economics, Volume 44, Issue 4, October 2026.
Abstract This study examines whether dual‐class governance affects how investors and firms respond to major capital allocation decisions. Using U.S.‐listed firms from 2014 to 2025, we analyze share repurchases and M&A transactions in which dual‐class firms act as acquirers or targets.
Bruno Fiesenig, Simon Kunze, Dirk Schiereck   +2 more
wiley   +1 more source

Forecasting Volatility of Commodity, Currency, and Stock Markets: Evidence From Markov‐Switching Multifractal Models

Journal of Forecasting, Volume 45, Issue 6, Page 2905-2941, September 2026.
ABSTRACT This paper adopts a bivariate Markov‐switching multifractal (BMSM) model to reexamine comovement in SV between commodity, foreign exchange (FX), and stock markets. After the 2007–2008 global financial crisis understanding volatility linkages and the correlation structure between these markets becomes very important for risk analysts, portfolio
Ruipeng Liu, Mawuli Segnon, Oguzhan Cepni, Rangan Gupta   +3 more
wiley   +1 more source

Predicting membrane protein localization by deep learning on structure and chemistry

Protein Science, Volume 35, Issue 9, September 2026.
Abstract It has been known since at least the 1980's that the structure and chemistry of membranes and membrane proteins are matched. Exploiting this fact, a graph neural network model of proteins was trained on experimentally determined membrane protein structures to predict the native membrane environment of transmembrane domains from their structure.
Bivek Pokhrel, Christian Munley, Miguel Pedraza, Edward Lyman   +3 more
wiley   +1 more source

Effects of Lactobacillus Alone and in Combination With Saccharomyces as Alternatives to Antibiotics on Performance and Immunity in Laying Hens

Veterinary Medicine and Science, Volume 12, Issue 5, September 2026.
Supplementation with Lactobacillus plantarum alone or combined with Saccharomyces cerevisiae improved laying performance, egg quality, immune response and caecal microbial balance by increasing beneficial lactic acid bacteria and reducing coliforms, demonstrating probiotics as a safe and sustainable alternative to antibiotic growth promoters in ...
Md. Jahangir Alam, Sonia Tabasum Ahmed, Md. Saiful Islam, Mahfuzul Islam, Md. Mahabbat Ali, Sang‐Suk Lee   +5 more
wiley   +1 more source