Results 71 to 80 of about 52,744 (304)

Use of Symptomatic Drug Treatment for Fatigue in Multiple Sclerosis and Patterns of Work Loss

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To describe the use of central stimulants and amantadine for fatigue in MS and evaluate a potential association with reduced work loss in people with MS. Methods We conducted a nationwide, matched, register‐based cohort study in Sweden (2006 to 2023) using national registers with prospective data collection.
Simon Englund, Johan Reutfors, Thomas Frisell, Fredrik Piehl   +3 more
wiley   +1 more source

A Forecast Test for Reducing Dynamical Dimensionality of Model Emulators

Journal of Advances in Modeling Earth Systems
The climate system can be numerically represented by a set of physically based dynamical equations whose solution requires substantial computational resources.
Tongtong Xu, Matthew Newman, Michael A. Alexander, Antonietta Capotondi   +3 more
doaj   +1 more source

Empirical Reduced-Order Modeling for Boundary Feedback Flow Control

Journal of Control Science and Engineering, 2008
This paper deals with the practical and theoretical implications of model reduction for aerodynamic flow-based control problems. Various aspects of model reduction are discussed that apply to partial differential equation- (PDE-) based models in general.
Seddik M. Djouadi, R. Chris Camphouse, James H. Myatt   +2 more
doaj   +1 more source

Balanced truncation model reduction of periodic systems [PDF]

, 2000
The balanced truncation approach to model reduction is considered for linear discrete-time periodic systems with time-varying dimensions. Stability of the reduced model is proved and a guaranteed additive bound is derived for the approximation error ...
Varga, Andras
core  

Age‐Related Characteristics of SYT1‐Associated Neurodevelopmental Disorder

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives We describe the clinical manifestations and developmental abilities of individuals with SYT1‐associated neurodevelopmental disorder (Baker‐Gordon syndrome) from infancy to adulthood. We further describe the neuroradiological and electrophysiological characteristics of the condition at different ages, and explore the associations ...
Sam G. Norwitz, Josefine Eck, Joel S. Winston, Kate Baker   +3 more
wiley   +1 more source

Structure-Preserving Low-Rank Model Reduction for Second-Order Time-Delay Systems

Mathematics
This paper introduces two model order-reduction techniques for second-order time-delay systems. The first method involves converting the second-order system into a first-order form, along with a set of related structure-preserving algorithms.
Man Tang, Zhi-Hua Xiao, Umair Zulfiqar
doaj   +1 more source

Second-Order Model Reduction Based on Gramians

Journal of Control Science and Engineering, 2012
Some new and simple Gramian-based model order reduction algorithms are presented on second-order linear dynamical systems, namely, SVD methods. Compared to existing Gramian-based algorithms, that is, balanced truncation methods, they are competitive and ...
Cong Teng
doaj   +1 more source

Reduced order models for control of fluids using the Eigensystem Realization Algorithm

, 2009
In feedback flow control, one of the challenges is to develop mathematical models that describe the fluid physics relevant to the task at hand, while neglecting irrelevant details of the flow in order to remain computationally tractable.
A.C. Or, A.L. Gaitonde, B. Noack, B.C. Moore, C.W. Rowley, Clarence W. Rowley, E. Åkervik, H. Choi, J. Kim, J.N. Juang, J.N. Juang, L.N. Cattafesta III, P. Holmes, R.H. Cabell, S. Bagheri, Sunil Ahuja, T. Colonius, W. Gawronski, W.A. Silva, Zhanhua Ma   +19 more
core   +2 more sources

3D‐Printed Serial Snap‐Through Architectures for Programmable Mechanical Response

Advanced Engineering Materials, EarlyView.
A serial snap‐through architecture is realized using compact 3D‐printed von Mises truss units arranged in a staged cascade. Their geometry and boundary conditions program multistage mechanical responses with plateaux and re‐hardening regimes. An inverted‐compliance model predicts these behaviors and enables analytical design of programmable force ...
Filipe A. Santos
wiley   +1 more source

Structured Model Order Reduction of System-Level Power Delivery Networks

IEEE Access
This paper proposes a comprehensive model order reduction framework to enable fast power integrity verification at the system level. This approach is developed to compress models of complete power delivery networks of high-end multiprocessor systems ...
Antonio Carlucci, Stefano Grivet-Talocia, Siddharth Kulasekaran, Kaladhar Radhakrishnan   +3 more
doaj   +1 more source