Results 1 to 10 of about 319,037 (305)

Blind Source Separation of Transformer Acoustic Signal Based on Sparse Component Analysis

Energies, 2022
In the acoustics-based power transformer fault diagnosis, a transformer acoustic signal collected by an acoustic sensor is generally mixed with a large number of interference signals.
Guo Wang, Yibin Wang, Yongzhi Min, Wu Lei   +3 more
doaj   +1 more source

Distributed Acoustic Sensing Based on Coherent Microwave Photonics Interferometry

Sensors, 2021
A microwave photonics method has been developed for measuring distributed acoustic signals. This method uses microwave-modulated low coherence light as a probe to interrogate distributed in-fiber interferometers, which are used to measure acoustic ...
Liwei Hua, Xuran Zhu, Baokai Cheng, Yang Song, Qi Zhang, Yongji Wu, Lawrence C. Murdoch, Erin R. Dauson, Carly M. Donahue, Hai Xiao   +9 more
doaj   +1 more source

Analysis of the genetic contribution to thoracic aortic aneurysm or dissection in a prospective cohort of patients with familial and sporadic cases in East China

Orphanet Journal of Rare Diseases, 2023
Background Thoracic aortic aneurysm or dissections (TAADs) represent a group of life-threatening diseases. Genetic aetiology can affect the age of onset, clinical phenotype, and timing of intervention.
Yanyu Duan, Jianxian Xiong, Zhenghong Lai, Yiming Zhong, Chengnan Tian, Zhiming Du, Zhifang Luo, Junjian Yu, Wentong Li, Weichang Xu, Yabing Wang, Ting Ding, Xuehong Zhong, Mengmeng Pan, Yu Qiu, Xuemei Lan, Taihua Chen, Peijun Li, Kang Liu, Meng Gao, Yanqiu Hu, Ziyou Liu   +21 more
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Fast and accurate annotation of acoustic signals with deep neural networks

eLife, 2021
Acoustic signals serve communication within and across species throughout the animal kingdom. Studying the genetics, evolution, and neurobiology of acoustic communication requires annotating acoustic signals: segmenting and identifying individual ...
Elsa Steinfath, Adrian Palacios-Muñoz, Julian R Rottschäfer, Deniz Yuezak, Jan Clemens   +4 more
doaj   +1 more source

The Energy Spectrum of the Acoustic Emission Signals of Nanoscale Objects [PDF]

Журнал нано- та електронної фізики, 2017
A one-dimensional discrete-continuum model of the energy spectrum of the acoustic emission signal, allowing filter oscillating components of the acoustic emission signals.
V.V. Marasanov, A.A. Sharko
doaj   +1 more source

Energy Spectrum of Acoustic Emission Signals in Complex Media [PDF]

Журнал нано- та електронної фізики, 2017
A model of the energy spectrum of acoustic emission signals in complex structures with internal degrees of freedom is proposed. On the basis of the computational experiment of X-ray diffraction data, a quantum mechanical calculation of the applicability ...
V.V.В Marasanov, A.A.В Sharko
doaj   +1 more source

Design and Analysis of an Active Reflection Controller That Can Reduce Acoustic Signal Refer to the Angle of Incidence

Sensors, 2021
Techniques for reducing the reflection of acoustic signals have recently been actively studied. Most methods for reducing acoustic signals were studied using the normal-incidence wave reduction technique.
Joo Young Pyun, Beom Hoon Park, Young Hun Kim, Yeong Bae Won, Hak Yi, Jeong-Min Lee, Hee-Seon Seo, Kwan Kyu Park   +7 more
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Signal Identification of Wire Breaking in Bridge Cables Based on Machine Learning

Mathematics, 2022
With the booming development of bridge construction, bridge operation and maintenance have always been major issues to ensure the safety of the community.
Guangming Li, Heming Ding, Yaohan Li, Chun-Yin Li, Chi-Chung Lee   +4 more
doaj   +1 more source

Research on an Identification Method of Post Porcelain Insulator Damage Based on Variational Modal Algorithm

Zhejiang dianli, 2022
In view of the difficulty in signal identification in vibration acoustic detection of post porcelain insulators， A BP （backpropagation） neural network identification method based on variational mode decomposition （VMD） is proposed to identify the damage ...
LUO Hongjian, ZHANG Jie, ZHAO Zhoufeng, JIAO Jingpin   +3 more
doaj   +1 more source

Broadband acoustic signal enhancement via gradient metamaterials coupled to crystals

Frontiers in Physics, 2023
In this work, a phononic crystal gradient metamaterial structure (PCGMs) is proposed based on the strong wave compression effect coupled with equivalent medium theory to achieve enhancement and directional sensing of weak target acoustic signals ...
Sai Zhang, Guodong Hao, Xinsa Zhao, Yexin Liu, Jianning Han   +4 more
doaj   +1 more source