Results 51 to 60 of about 245,794 (329)

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri   +7 more
wiley   +1 more source

A robust braille recognition system [PDF]

open access: yes, 2004
Braille is the most effective means of written communication between visually-impaired and sighted people. This paper describes a new system that recognizes Braille characters in scanned Braille document pages.
B.C. Lin   +10 more
core   +3 more sources

Predicting Epileptogenic Tubers in Patients With Tuberous Sclerosis Complex Using a Fusion Model Integrating Lesion Network Mapping and Machine Learning

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Accurate localization of epileptogenic tubers (ETs) in patients with tuberous sclerosis complex (TSC) is essential but challenging, as these tubers lack distinct pathological or genetic markers to differentiate them from other cortical tubers.
Tinghong Liu   +11 more
wiley   +1 more source

Review of transient control strategies for grid-forming converters under grid voltage sag conditions

open access: yes电力工程技术
As a large amount of renewable energy is integrated into the grid via power electronic converters,the power system is faced with challenges,such as reduced inertia,diminished disturbance resistance,and declining transient support capabilities.
Yuxuan LIN, Wei LI, Ling ZHU, Chong REN
doaj   +1 more source

Improved Dual Closed-Loop Control for Modular Multilevel Converters Based on Voltage Drop on Grid Impedance [PDF]

open access: yesDianli jianshe
[Objective] As renewable power bases gradually expand from load centers to remote areas such as deep offshore, deserts, and barren lands, using grid-forming voltage source converter-based high voltage direct current (VSC-HVDC) transmission technology is ...
LIU Shan, LIU Qi, ZHU Lin, YAN Jun, CHI Chengbin, SUN Zengjie
doaj   +1 more source

Universal Flow-Driven Conical Emission in Ultrarelativistic Heavy-Ion Collisions

open access: yes, 2010
The double-peak structure observed in soft-hard hadron correlations is commonly interpreted as a signature for a Mach cone generated by a supersonic jet interacting with the hot and dense medium created in ultrarelativistic heavy-ion collisions.
Barbara Betz   +8 more
core   +1 more source

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

open access: yesInternational 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

Load demand fulfillment through GFM-inverter based modified droop-control under various network conditions

open access: yesEnergy Reports
This paper offers a systematic approach to understanding the performance of the grid-forming inverter in both isolated and hybrid configuration with a grid-following inverter in low-voltage distribution network. While most existing studies concentrate on
Qusay Salem   +4 more
doaj   +1 more source

A Comprehensive Review on Grid-forming Inverter: Potential and Future Trends

open access: yesMajlesi Journal of Electrical Engineering, 2023
There is growing commitment to phase-out the conventional fossil-fuel based power stations to decentralized power generation with high share of renewable energy sources that is based on low-emission to meet the various techno-economic, environmental and ...
SAMUEL YUSUF, ADAMU ABUBAKAR
doaj   +1 more source

Risk-Averse Model Predictive Operation Control of Islanded Microgrids

open access: yes, 2019
In this paper we present a risk-averse model predictive control (MPC) scheme for the operation of islanded microgrids with very high share of renewable energy sources.
Hans, Christian A.   +4 more
core   +1 more source

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