Results 21 to 30 of about 63,816 (258)
Unsupervised Detection of Multiple Sleep Stages Using a Single FMCW Radar
Applied Sciences, 2023 The paper proposes a unsupervised method for detecting the three stages of sleep—wake, rapid eye movement (REM) sleep, and non-REM sleep—using biosignals obtained from a 61 GHz single frequency modulated continuous wave (FMCW) radar.
Young-Keun Yoo +2 more
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Analysis of thermal characteristics with multi-physicsc oupling for the feed system of a precision CNC machine tool [PDF]
Bulletin of the Polish Academy of Sciences: Technical SciencesThe machining accuracy of CNC machine tools is significantly affected by the thermal deformation of the feed system. The ball screw feed system is extensively used as a transmission component in precise CNC machine tools, responsible for converting ...
Junjian Zheng +7 more
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An Electronic System for the Contactless Reading of ECG Signals
Sensors, 2017 The aim of this work is the development of a contactless capacitive sensory system for the detection of (Electrocardiographic) ECG-like signals. The acquisition approach is based on a capacitive coupling with the patient body performed by electrodes ...
Francesca Romana Parente +6 more
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Vital Sign Monitoring Using FMCW Radar in Various Sleeping Scenarios
Sensors, 2020 Remote monitoring of vital signs for studying sleep is a user-friendly alternative to monitoring with sensors attached to the skin. For instance, remote monitoring can allow unconstrained movement during sleep, whereas detectors requiring a physical ...
Emmi Turppa +3 more
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Contactless camera-based AHI score estimation in SAS patients
Current Directions in Biomedical Engineering, 2023 Sleep apnea syndrome (SAS) is a common sleeprelated breathing disorder characterized by recurring cessations of airflow during sleep. The gold standard for diagnosing SAS is polysomnography (PSG) which requires the patient to spend one or several nights ...
Alic Belmin +4 more
doaj +1 more source
Wi-Senser: Contactless Head Movement Detection during Sleep Utilizing WiFi Signals
Applied Sciences, 2023 Detecting human head movement during sleep is important as it can help doctors to assess many physical or mental health problems, such as infantile eczema, calcium deficiency, insomnia, anxiety disorder, and even Parkinson’s disease, and provide useful ...
Yi Fang, Wei Liu, Sun Zhang
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Standardization of surface potential measurements of graphene domains [PDF]
, 2013 We compare the three most commonly used scanning probe techniques to obtain a reliable value of the work function in graphene domains of different thickness.
Kazakova, Olga +4 more
core +2 more sources
Non-Contact Monitoring of Breathing Pattern and Respiratory Rate via RGB Signal Measurement
Sensors, 2019 Among all the vital signs, respiratory rate remains the least measured in several scenarios, mainly due to the intrusiveness of the sensors usually adopted.
Carlo Massaroni +4 more
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ADVANCING THE SEPARATION SCIENCES THROUGH THE DELIVERY OF NEW MATERIALS, TECHNOLOGY AND METHODOLOGY. [PDF]
, 2013 A thesis and collection of works submitted to Plymouth University in partial fulfilment for the degree of DOCTOR OF ...
Paull, Brett
core +2 more sources
Applied Sciences, 2019 Techniques for noncontact measurement of vital signs using camera imaging technologies have been attracting increasing attention. For noncontact physiological assessments, computer vision-based methods appear to be an advantageous approach that could be ...
Fatema-Tuz-Zohra Khanam +2 more
doaj +1 more source