Results 1 to 10 of about 2,710 (218)
Sensors, 2022 This paper proposes a new intelligent recognition method for concrete ultrasonic detection based on wavelet packet transform and a convolutional neural network (CNN).
Jinhui Zhao, Tianyu Hu, Qichun Zhang
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Ultrasonic Detection of Choledocholithiasis [PDF]
Nature, 1961 PRESENT-DAY methods of detecting gall-stones in the common bile duct at operation are not wholly satisfactory. Stones may be missed in spite of careful palpation, cholangiography and direct exploration of the common bile duct. An attempt has been made to use pulsed ultrasound at the time of operation as an adjunct to their detection.
M J, HILL, I, McCOLL
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Sensors, 2021 In this paper, we propose a theoretical framework to explain how the transparent elastic grating structure can be employed to enhance the mechanical and optical properties for ultrasonic detection.
Chayanisa Sukkasem +3 more
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A novel detector based on EM algorithm for multiple-mode OFDM with index modulation
EURASIP Journal on Wireless Communications and Networking, 2020 Multiple-mode orthogonal frequency division multiplexing with index modulation (MM-OFDM-IM) is a promising multiple-carrier modulation technique, which activates all OFDM subcarriers to transmit multiple distinguishable modes (or signal constellations ...
Hua Qing +4 more
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Energies, 2021 The detection of acoustic emissions with multiple channels and different kinds of sensors (external ultrasound electronic sensors and internal optical fiber sensors) for monitoring power transformers is presented.
Iago Búa-Núñez +2 more
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Research on Rail Flaw Echo Accurate Location Method Based on Interface Wave Tracking Technology
Kongzhi Yu Xinxi Jishu, 2023 In the calculation of rail flaw echo location, the rail flaw location is related to the ultrasonic propagation time in rail. The more accurate the extracted propagation time, the more accurate the rail flaw location calculation.
XIA Lang +3 more
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Measurement Science Review, 2023 The influence of the wavelength difference between the laser source and the phase-shifted fiber Bragg grating (PS-FBG) on the intensity of the power demodulation system based on an adjustable laser source was studied experimentally, and the optimum of ...
Meng Lijun, Tan Xin, Yu Quanquan
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Applied Sciences, 2020 Insulation defects that occur in gas-insulated switchgear (GIS), which is one of the most important types of equipment in the power grid, can lead to serious accidents.
Weijia Yao +4 more
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A dynamic coal quantity detection system for conveyor belt based on ultrasonic array
Gong-kuang zidonghua, 2023 Dynamic coal quantity detection for conveyor belt is the foundation and key to achieving energy consumption optimization measures for multi-stage belt conveyors such as coal flow starting and automatic speed regulation.
HAO Hongtao, WANG Kai, DING Wenjie
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M-SAC-VLADNet: A Multi-Path Deep Feature Coding Model for Visual Classification
Entropy, 2018 Vector of locally aggregated descriptor (VLAD) coding has become an efficient feature coding model for retrieval and classification. In some recent works, the VLAD coding method is extended to a deep feature coding model which is called NetVLAD.
Boheng Chen, Jie Li, Gang Wei, Biyun Ma
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