Results 51 to 60 of about 11,306,054 (330)

Modelling the Molecular Permeation through Mixed-Matrix Membranes Incorporating Tubular Fillers

Membranes, 2021
Membrane-based processes are considered a promising separation method for many chemical and environmental applications such as pervaporation and gas separation.
Ali Zamani, F. Handan Tezel, Jules Thibault   +2 more
doaj   +1 more source

Heterogeneity of Rheumatoid Arthritis–Associated Interstitial Lung Disease by Longitudinal Forced Vital Capacity Trajectory and Associations With Disease Outcomes

Arthritis Care &Research, EarlyView.
Objective We aimed to identify unique disease trajectories within rheumatoid arthritis–associated interstitial lung disease (RA‐ILD) based on longitudinal forced vital capacity (FVC) values and their associated clinical outcomes. Methods We performed a cohort study of RA‐ILD within the Veterans Health Administration from 1999 to 2021.
Bryant R. England, Yangyuna Yang, Punyasha Roul, Tate M. Johnson, Scott M. Matson, Grant W. Cannon, Brian C. Sauer, Jeffrey R. Curtis, Joshua F. Baker, Ted R. Mikuls   +9 more
wiley   +1 more source

Approximate Solutions of Time Fractional Diffusion Wave Models

Mathematics, 2019
In this paper, a wavelet based collocation method is formulated for an approximate solution of (1 + 1)- and (1 + 2)-dimensional time fractional diffusion wave equations.
Abdul Ghafoor, Sirajul Haq, Manzoor Hussain, Poom Kumam, Muhammad Asif Jan   +4 more
doaj   +1 more source

Numerical treatment of a magnetized electron fluid model in a 3D simulator of plasma thruster plumes

Frontiers in Physics, 2023
Simulations of energetic plumes from plasma thrusters are of great interest for estimating performances and interactions with the spacecraft. Both in fully fluid and hybrid (particle/fluid) models, the electron population is described by a set of fluid ...
Alberto Modesti, Filippo Cichocki, Eduardo Ahedo   +2 more
doaj   +1 more source

Efficiency of Higher Order Finite Elements for the Analysis of Seismic Wave Propagation

, 2000
The analysis of wave propagation problems in linear damped media must take into account both propagation features and attenuation process. To perform accurate numerical investigations by the finite differences or finite element method, one must consider ...
AKI, BONNET, BOURBIÉ, COHEN, FACCIOLI, HUGHES, HUMBERT, IHLENBURG, J.F. SEMBLAT, J.J. BRIOIST, MOLENKAMP, SEMBLAT, SEMBLAT, SEMBLAT, SEMBLAT, SLOAN   +15 more
core   +2 more sources

Effect of Foot Orthoses on Midfoot Pain and the Volume of Bone Marrow Lesions in the Midfoot: A Randomized Mechanism of Action Study

Arthritis Care &Research, EarlyView.
Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead, Anne‐Maree Keenan, Philip G. Conaghan, Dennis McGonagle, Anthony C. Redmond   +4 more
wiley   +1 more source

Numerical Study of Electro-Osmotic Fluid Flow and Vortex Formation

Micromachines, 2019
The phenomenon of electro-osmosis was studied by performing numerical simulations on the flow between parallel walls and at the nozzle microchannels.
Wesley De Souza Bezerra, Antonio Castelo, Alexandre M. Afonso   +2 more
doaj   +1 more source

Theoretical and numerical results for the nonlinear shallow water problem [PDF]

Surveys in Mathematics and its Applications, 2023
In this paper, the nonlinear shallow water problem is studied analytically and numerically. This problem has been studied by different authors in the linear case; here we consider a nonlinear one with non constant coefficients.
Mohammed Lachache, Fatma Zohra Nouri
doaj  

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source