Results 81 to 90 of about 3,438,442 (401)

Cable partial discharge location method based on EEMD and marginal spectral energy

电力工程技术, 2022
The oscillation wave partial discharge test has been used more and more in the detection of cable insulation defects, but the background noise interference and discharge pulse matching affect the accuracy of partial discharge location.
LIU Yushun, CHENG Dengfeng, YIN Qiaoling, LI Senlin, XIA Lingzhi, YAN Bo   +5 more
doaj   +1 more source

3D MRI Tract‐Specific Spinal Cord Lesion Pattern Improves Prediction of Distinct Neurological Recovery

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To distinguish lateralized motor‐ and sensory‐tract damage after acute spinal cord injury (SCI) and explore its predictive power for motor and sensory recovery. Methods Thirty‐five SCI patients (two female) from a multi‐center data set (placebo‐arm of the Nogo‐A‐Inhibition in SCI trial) underwent routine T2‐weighted sagittal MRI ...
Lynn Farner, Tim M. Emmenegger, Simon Schading‐Sassenhausen, Julia Berroth, Maryam Seif, Armin Curt, Patrick Freund, The Nogo Inhibition in Spinal Cord Injury Study Group   +7 more
wiley   +1 more source

Fractal-based autonomous partial discharge pattern recognition method for MV motors [PDF]

, 2018
On-line partial discharge (PD) monitoring is being increasingly adopted to improve the asset management and maintenance of medium-voltage (MV) motors. This study presents a novel method for autonomous analysis and classification of motor PD patterns in ...
Cacciari M., Danikas M., Jian L., Keller J.M., Kheirmand A., Kreuger F.F.H., Krivda A., Li S., Mandelbrot B., Salama M., Song X., Stone G., Xiaosheng P., Xiaoxing Z., Xiaoxing Z., Zhou C.   +15 more
core   +2 more sources

Phenotyping Healthcare Use 2–3 Decades Before the First Multiple Sclerosis Demyelinating Event

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Phenotype hospital, physician, and emergency department (ED) visits by diagnoses and specialty up to 29 years pre‐multiple sclerosis (MS) onset versus a matched population without MS. Methods We identified people with MS (PwMS) using population‐based administrative data from Ontario, Canada (1991–2020).
Helen Tremlett, Karl Everett, Colleen J. Maxwell, Feng Zhu, Ayesha Asaf, Ping Li, Kyla A. McKay, Yinshan Zhao, Ruth Ann Marrie   +8 more
wiley   +1 more source

Classification of partial discharge EMI conditions using permutation entropy-based features [PDF]

, 2017
In this paper we investigate the application of feature extraction and machine learning techniques to fault identification in power systems. Specifically we implement the novel application of Permutation Entropy-based measures known as Weighted ...
Boreham, Philip, Mitiche, Imene, Morison, Gordon, Nesbitt, Alan, Stewart, Brian G.   +4 more
core   +4 more sources

Evaluation of a calibration technique in measuring partial discharges inside mineral oils with a high‐frequency current transformer (HFCT) sensor: A case study

IET Generation, Transmission & Distribution, 2023
Partial discharge is one of the main reasons for insulation degradation in high‐voltage apparatuses. Partial discharge is an ineluctable phenomenon that happens when a high electrical field is adjacent to an insulator. High‐frequency current transformers
Hamidreza Besharatifard, Saeed Hasanzadeh, S M Muyeen, Innocent Kamwa   +3 more
doaj   +1 more source

Cervical Spinal Cord Magnetization Transfer Ratio and Its Relationship With Clinical Outcomes in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The cervical spinal cord (cSC) is highly relevant to clinical dysfunction in multiple sclerosis (MS) but remains understudied using quantitative magnetic resonance imaging (MRI). We assessed magnetization transfer ratio (MTR), a semi‐quantitative MRI measure sensitive to MS‐related tissue microstructural changes, in the cSC and its ...
Lisa Eunyoung Lee, Julien Cohen‐Adad, Irene M. Vavasour, Melanie Guenette, Katherine Sawicka, Neda Rashidi‐Ranjbar, Nathan Churchill, Akash Chopra, Adelia Adelia, Pierre‐Louis Benveniste, Anthony Traboulsee, Nathalie Arbour, Fabrizio Giuliani, Larry D. Lynd, Scott B. Patten, Alexandre Prat, Alice Schabas, Penelope Smyth, Roger Tam, Yunyan Zhang, Simon J. Graham, Mojgan Hodaie, Anthony Feinstein, Shannon Kolind, Tom A. Schweizer, Jiwon Oh, CanProCo Study Group   +26 more
wiley   +1 more source

Entropy-based feature extraction for electromagnetic discharges classification in high-voltage power generation [PDF]

, 2018
This work exploits four entropy measures known as Sample, Permutation, Weighted Permutation, and Dispersion Entropy to extract relevant information from Electromagnetic Interference (EMI) discharge signals that are useful in fault diagnosis of High ...
Boreham, Philip, Mitiche, Imene, Morison, Gordon, Nesbitt, Alan, Stewart, Brian G.   +4 more
core   +2 more sources

A Convolutional Neural Network-Based Deep Learning Methodology for Recognition of Partial Discharge Patterns from High-Voltage Cables

IEEE Transactions on Power Delivery, 2019
It is a great challenge to differentiate partial discharge (PD) induced by different types of insulation defects in high-voltage cables. Some types of PD signals have very similar characteristics and are specifically difficult to differentiate, even for ...
Xiaosheng Peng, Fan Yang, Ganjun Wang, Yijiang Wu, Lee Li, Zhaohui Li, A. A. Bhatti, Chengke Zhou, D. Hepburn, A. Reid, M. Judd, W. H. Siew   +11 more
semanticscholar   +1 more source

Time‐Frequency Fingerprint Analysis in SEEG Source‐Space to Identify the Epileptogenic Zone

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT This case study highlights the application of seizure fingerprint analysis in the source‐space of stereo‐EEG (SEEG) data to accurately localize the epileptogenic zone (EZ) in patients with complex cortical malformations. A 25‐year‐old female with extensive bilateral perisylvian polymicrogyria (PMG) presented with intractable focal seizures ...
Yash Shashank Vakilna, Deniz Atilgan, Johnson Hampson, Chinmay Chinara, Takfarinas Medani, Richard M. Leahy, Nuria Lacuey, Samden D. Lhatoo, Sandipan Pati, John C. Mosher, Jay R. Gavvala   +10 more
wiley   +1 more source