Results 91 to 100 of about 4,191 (239)
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
Spectral Homotopy Analysis Method for PDEs That Model the Unsteady Von Kàrmàn Swirling Flow
Journal of Applied Fluid Mechanics, 2014 A spectral homotopy analysis method (SHAM) is used to find numerical solutions for the unsteady viscous flow problem due to an infinite rotating disk. The problem is governed by a set of two fully coupled nonlinear partial differential equations.
Zodwa Makukula, Sandile Motsa
doaj
The Arabidopsis NPF7.2 mediates coumarin uptake for root iron acquisition
New Phytologist, EarlyView.Summary Iron (Fe) is a transition metal necessary for achieving essential physiological processes throughout the plant lifecycle. In Arabidopsis thaliana, secreting Fe‐mobilizing coumarins (FMC) is a key mechanism enabling roots to acquire nonbioavailable Fe present in soils.
Shunsuke Watanabe +7 more
wiley +1 more source
Attractors of Hamilton nonlinear PDEs
Discrete and Continuous Dynamical Systems, 2016 In this very insightful survey article, the author describes results on long time behavior and attractors for nonlinear Hamiltonian systems. In the introduction, the beginnings of the mathematical theory of attractors for nonlinear PDEs and important developments are considered, with emphasis for the Hamiltonian PDEs, where the energy radiation to ...
openaire +3 more sources
The Journal of Physiology, EarlyView.Abstract figure legend Using a multiscale computational model of left ventricular electromechanics, we investigated how sarcomere dynamics influence the end‐systolic pressure‐volume (ESPV) relationship in ejecting beats compared to isovolumetric beats.
Francesco Regazzoni +2 more
wiley +1 more source
Earthquake Spectra, Volume 42, Issue 2, May 2026.As fragility and risk modeling techniques and computational capabilities evolve, complemented by moving toward more routine and systematic seismic risk assessment of all buildings and critical infrastructure, the authors pose a few critical questions to investigate how the U.S. Geological Survey (USGS) National Seismic Hazard Models (NSHMs) can be used
Kishor S. Jaiswal, N. Simon Kwong
wiley +1 more source
A comparative study of a system of Lotka-Voltera type of PDEs through perturbation methods [PDF]
Computational Ecology and Software, 2013 In this paper the Adomian Decomposition Method (ADM) is employed in order to solve linear and nonlinear functional equations and the results are then compared with those produced by Homotopy Perturbation Method (HPM) through a system of Lotka Voltera ...
T. Khan, et al., M. Shakil, H. A. Waha
doaj
PVRI‐GoDeep—A Global Meta‐Registry at the Crossroads of Heart and Lung
Comprehensive Physiology, Volume 16, Issue 2, April 2026.PVRI GoDeep is a global meta‐registry that harmonizes high‐quality patient‐level data from pulmonary hypertension registries worldwide. With over 45,000 enrolees already included, it enables robust phenotyping, international comparisons, and clinically relevant research across all PH subgroups beyond the scope of single‐center or national datasets ...
Meike T. Fuenderich +83 more
wiley +1 more source
International Journal for Numerical Methods in Fluids, Volume 98, Issue 4, Page 398-432, April 2026.We introduce new efficient and accurate first order finite volume‐type numerical schemes, for the non‐conservative one‐dimensional blood flow equations with transport, taking into account different velocity profiles. The framework is the flux‐vector splitting approach of Toro and Vázquez‐Cendón (2012), that splits the system in two subsystems of PDEs ...
Alessandra Spilimbergo +3 more
wiley +1 more source