Results 21 to 30 of about 3,012,873 (295)
Signal quality of endovascular electroencephalography [PDF]
Journal of Neural Engineering, 2016 Objective, Approach. A growing number of prototypes for diagnosing and treating neurological and psychiatric diseases are predicated on access to high-quality brain signals, which typically requires surgically opening the skull. Where endovascular navigation previously transformed the treatment of cerebral vascular malformations, we now show that it ...
He, Bryan D. +3 more
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Biomimetics, 2023 Continuously acquired biosignals from patient monitors contain significant amounts of unusable data. During the development of a decision support system based on continuously acquired biosignals, we developed machine and deep learning algorithms to ...
Hyun Joo Kim +5 more
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Identification of Transient Noise to Reduce False Detections in Screening for Atrial Fibrillation
Frontiers in Physiology, 2021 Screening for atrial fibrillation (AF) with a handheld device for recording the ECG is becoming increasingly popular. The poorer signal quality of such ECGs may lead to false detection of AF, often caused by transient noise.
Hesam Halvaei +3 more
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Low Quality as a Signal of High Quality [PDF]
SSRN Electronic Journal, 2003 Abstract If a product has two dimensions of quality, one observable and one not, a firm can use observable quality as a signal of unobservable quality. The correlation between consumers’ valuation of high quality in each dimension is a key determinant of the feasibility of such signaling.
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Sensors, 2021 Obstructive sleep apnea (OSA) patients would strongly benefit from comfortable home diagnosis, during which detection of wakefulness is essential. Therefore, capacitively-coupled electrocardiogram (ccECG) and bioimpedance (ccBioZ) sensors were used to ...
Dorien Huysmans +8 more
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Fixed price and quality signals [PDF]
Mathematical Social Sciences, 1994 In this paper I study the existence and efficiency of equilibrium for a fixed price economy in which the quality of goods is variable.
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Sensors, 2023 Adaptive equalization is crucial in mitigating distortions and compensating for frequency response variations in communication systems. It aims to enhance signal quality by adjusting the characteristics of the received signal. Particle swarm optimization
Arooj Khan +6 more
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Optimal Signal Quality Index for Photoplethysmogram Signals [PDF]
Bioengineering, 2016 A photoplethysmogram (PPG) is a noninvasive circulatory signal related to the pulsatile volume of blood in tissue and is typically collected by pulse oximeters. PPG signals collected via mobile devices are prone to artifacts that negatively impact measurement accuracy, which can lead to a significant number of misleading diagnoses.
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Transcoding of MPEG Bitstreams [PDF]
, 1996 This paper discusses the problem of transcoding as it may occur in, for instance, the following situation. Suppose a satellite transmits an MPEG-compressed video signal at say 9 Mbit/s. This signal must be relayed at a cable head end.
Heideman, Geert +3 more
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Adaptive Signal-to-Noise Ratio Indicator for Wearable Bioimpedance Monitoring
Sensors, 2023 Bioimpedance monitoring is an increasingly important non-invasive technique for assessing physiological parameters such as body composition, hydration levels, heart rate, and breathing.
Didzis Lapsa +2 more
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