Results 1 to 10 of about 98,954,750 (292)
Pulse Rate Variability Analysis Using Remote Photoplethysmography Signals
Sensors, 2021 Pulse rate variability (PRV) refers to the change in the interval between pulses in the blood volume pulse (BVP) signal acquired using photoplethysmography (PPG). PRV is an indicator of the health status of an individual’s autonomic nervous system.
Su-Gyeong Yu +4 more
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Face Biometric Spoof Detection Method Using a Remote Photoplethysmography Signal
Sensors, 2022 Spoofing attacks in face recognition systems are easy because faces are always exposed. Various remote photoplethysmography-based methods to detect face spoofing have been developed. However, they are vulnerable to replay attacks.
Seung-Hyun Kim +2 more
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Time-behavior of pile groups based on fractional derivative soil model
Yantu gongcheng xuebao, 2022 Based on the finite element method, the finite element equations for the vertically loaded pile groups are established by dividing the pile groups into a number of 2-node elements.
AI Zhi-yong 1, 2, YE Zi-kun 1, 2, LIU Wen-jie 1, 2
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Microorganisms, 2020 Campylobacter jejuni is a major foodborne pathogen, and the LuxS-mediated quorum-sensing (QS) system influences its motility, biofilm formation, invasion, host colonization, and virulence. QS therefore represents a target for the control of C.
Katarina Šimunović +3 more
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Photoplethysmogram Biometric Authentication Using a 1D Siamese Network
Sensors, 2023 In the head-mounted display environment for experiencing metaverse or virtual reality, conventional input devices cannot be used, so a new type of nonintrusive and continuous biometric authentication technology is required.
Chae Lin Seok +3 more
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Evaluation of multi-stage fracturing a horizontal well of low permeability reservoirs in East China Sea [PDF]
Youqicang pingjia yu kaifa, 2023 Staged fracturing technology for offshore horizontal wells is still in an exploratory phase due to operational limitations. The effectiveness of fracturing horizontal wells has a significant impact on their productivity.
ZHANG Fengxi, NIU Congcong, ZHANG Yichi
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Yantu gongcheng xuebao, 2020 The granite residual soil is a kind of special structural soil with both engineering and fabric characteristics of clay and coarse grained soil. Its engineering performance is generally susceptible to disturbance damage and excavation unloading, which ...
AN Ran 1, 2, LI Cheng-sheng 1, 2, KONG Ling-wei 1, 2, GUO Ai-guo 1, 2
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Effects of geometrical feature on Forchheimer-flow behavior through rough-walled rock fractures
Yantu gongcheng xuebao, 2021 In order to study the relationship between the geometrical feature and the nonlinear flow properties of rough-walled rock fractures, a numerical model based on the fractal behavior is proposed to characterize the three-dimensional geometry of rough ...
ZHOU Xin 1, 2, SHENG Jian-long 1, 2, YE Zu-yang 1, 2, LUO Wang 1, 2, HUANG Shi-bing 1, 2, CHENG Ai-ping 1, 2
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Shallow-layer p-y curves for single micropile in sands
Yantu gongcheng xuebao, 2018 Micropiles are increasingly used in seismic design or retrofitting for pile foundations. This study aims to investigate the validity of the widely used p-y relationships proposed by the American Petroleum Institute (API) and the ‘m method'; in the ...
WANG Xiao-wei 1, 2, YE Ai-jun 1, 2, SHANG Yu 1, 2
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Applied Sciences, 2023 The COVID-19 pandemic has significantly impacted society, having led to a lack of social skills in children who became used to interacting with others while wearing masks. To analyze this issue, we investigated the effects of masks on face identification
Seunghyun Kim +2 more
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