Results 41 to 50 of about 8,128 (103)

Applying Mean-field Approximation to Continuous Time Markov Chains [PDF]

open access: yes, 2013
The mean-field analysis technique is used to perform analysis of a systems with a large number of components to determine the emergent deterministic behaviour and how this behaviour modifies when its parameters are perturbed.
Kolesnichenko, Anna   +2 more
core  

Robotic Needle Steering for Percutaneous Interventions: Sensing, Modeling, and Control

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 1, January 2026.
This review examines recent advances in robotic needle steering for percutaneous interventions, highlighting closed‐loop sensing, physics‐informed tissue‐needle interaction modeling, and real‐time trajectory planning and control. It synthesizes innovations in deep learning, fiber‐optic feedback, and adaptive control strategies, and outlines emerging ...
Fangjiao Zhao   +5 more
wiley   +1 more source

High‐Fidelity 3D Reconstruction From Sparse Multi‐Baseline CSAR Data via Conditional Diffusion Models

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This work proposes a conditional diffusion model framework for high‐fidelity 3D reconstruction from sparse multibaseline circular synthetic aperture radar (CSAR) data, addressing challenges of low vertical resolution, geometric blur and artefacts. The method integrates a dual‐path 3D U‐Net with cross‐attention to fuse coarse reconstruction features ...
Xingyu Zhao   +4 more
wiley   +1 more source

A Pincherle‐Type Convergence Theorem for Generalized Continued Fractions in Banach Algebras

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
This contribution is dedicated to the interdependence of higher order linear difference equations and generalized continued fractions in Banach algebras. It turns out that the computation of certain subdominant solutions of a higher order linear difference equation can be done more efficiently by considering its adjoint equation.
Hendrik Baumann   +2 more
wiley   +1 more source

Pinning and Depinning: from periodic to chaotic and random media

open access: yes, 2018
We study propagation of dissipative structures in inhomogeneous media with a focus on pinning and depinning transitions. We model spatial complexity in the medium as generated by dynamical systems. We are thus able to capture transitions from periodic to
Ankney, Noah   +3 more
core   +1 more source

Bridge Health State Assessment and Multiscale Deterioration Modeling: Methods, Challenges, and Future Prospects

open access: yesStructural Control and Health Monitoring, Volume 2026, Issue 1, 2026.
Bridge deterioration modeling plays a crucial role in infrastructure maintenance and lifespan prediction. Current methodologies evolve along three axes: (1) Mechanism‐driven models, which leverage structural mechanics and material degradation theories to provide detailed insights into the physical processes underlying deterioration, constrained by ...
Kangliying Yin   +4 more
wiley   +1 more source

Assessing spatial ecological patterns of wild turkey relative abundance across North America

open access: yesWildlife Society Bulletin, Volume 49, Issue S1, December 2025.
We jointly modeled observational data from camera traps and citizen science to assess the spatially varying effects of land cover and climatic variables on wild turkey (Meleagris gallopavo) population abundance across the continental United States. The strongest spatial variation in covariate effects was for temperature and precipitation, suggesting ...
Muzi D. Sibiya   +10 more
wiley   +1 more source

Effects of Local Thermal Nonequilibrium and Sediment Heterogeneity on Heat Tracer‐Based Downwelling Flux Quantification in Streambeds

open access: yesWater Resources Research, Volume 61, Issue 12, December 2025.
Abstract Local thermal nonequilibrium (LTNE) effects in heterogeneous media can affect subsurface temperature distributions, as well as the capacity of the heat transport model to solve the inverse problem of estimating groundwater fluxes. We present a synthetic coupled flow and heat transport numerical model with five scenarios to analyze the ...
Wenguang Shi   +5 more
wiley   +1 more source

Endogenous Technology Spillovers in R&D Collaboration Networks

open access: yesThe RAND Journal of Economics, Volume 56, Issue 4, Page 419-443, Winter 2025.
ABSTRACT We introduce an R&D network formation model where firms choose both R&D efforts and collaboration partners. Neighbors in the network benefit from each other's R&D through technology spillovers, and there exists competition effects reflecting strategic substitutability in R&D.
Chih‐Sheng Hsieh   +2 more
wiley   +1 more source

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