Results 51 to 60 of about 2,649 (198)

Continuous intraoperative perfusion monitoring of free microvascular anastomosed fasciocutaneous flaps using remote photoplethysmography

Scientific Reports, 2023
Flap loss through limited perfusion remains a major complication in reconstructive surgery. Continuous monitoring of perfusion will facilitate early detection of insufficient perfusion. Remote or imaging photoplethysmography (rPPG/iPPG) as a non-contact,
Sebastian P. Schraven, Benjamin Kossack, Daniel Strüder, Maximillian Jung, Lotte Skopnik, Justus Gross, Anna Hilsmann, Peter Eisert, Robert Mlynski, Eric L. Wisotzky   +9 more
doaj   +1 more source

Cord pilot trial, comparing alternative policies for timing of cord clamping before 32 weeks gestation: follow-up for women up to one year. [PDF]

, 2019
BACKGROUND: The Cord Pilot Trial compared two alternative policies for cord clamping at very preterm birth at eight UK maternity units: clamping after at least 2 min and immediate neonatal care (if needed) with cord intact, or clamping within 20 s and ...
Armstrong-Buisseret, L., Ayers, S., Bradshaw, L., Duley, L., Mitchell, E., Sawyer, A.   +5 more
core   +4 more sources

Continuous Pulse Rate Monitoring from Facial Video Using rPPG

, 2023
Cardiovascular activity causes some imperceptible changes in different regions of human body. These changes set the stage for isolated systolic hypertension, diastolic dysfunction and heart failure, atrioventricular conduction defects and aorta valve calcification.
null Yi, Kokila Harshani, Trisha Dehrone
openaire   +1 more source

A Deep Neural Network Based on Two‐Stage Training for Estimating Heart Rate Variability From Camera Videos

Health Care Science, Volume 5, Issue 1, Page 74-84, February 2026.
Heart Rate Variability Estimation from Camera Videos ABSTRACT Background Studies have shown that heart rate variability (HRV) is a predictor of the prognosis of cardiovascular diseases. Contact heartbeat monitoring equipment is widely used, especially in hospitals, and benefits from the rapidity and accuracy of the detection of physiological health ...
Lan Lan, Jin Yin, Haohan Zhang, Hua Jiang, Rui Qin, Xia Zhao, Yu Zhang, Yilong Wang, Jiajun Qiu   +8 more
wiley   +1 more source

Asset Pricing and Risk‐Sharing Implications of Alternative Pension Plan Systems

The Journal of Finance, Volume 81, Issue 1, Page 143-188, February 2026.
ABSTRACT We show that incorporating defined benefit pension funds in an incomplete markets asset pricing model improves its ability to match the historical equity premium and riskless rate and has important risk‐sharing implications. We document the importance of the pension fund's size and asset demands, and a new risk channel arising from ...
NUNO COIMBRA, FRANCISCO GOMES, ALEXANDER MICHAELIDES, JIALU SHEN   +3 more
wiley   +1 more source

Prediction of Heart Wellness Based on the Analysis of Skin Color

Engineering Proceedings, 2023
Heart rate monitoring is crucial in scientific and technical fields as it provides essential information about cardiovascular health, exercise performance, and stress levels, enabling early detection of and intervention for potential cardiac ...
Kavya Sree Kammari, Neetu Srivastava, Ioannis Sarris   +2 more
doaj   +1 more source

Resonances of the Frobenius-Perron Operator for a Hamiltonian Map with a Mixed Phase Space

, 2001
Resonances of the (Frobenius-Perron) evolution operator P for phase-space densities have recently attracted considerable attention, in the context of interrelations between classical and quantum dynamics.
Agam O, Andreev A V, Andreev A V, Baladi V, Biedenharn L C, Christopher Manderfeld, Cvitanovic P, Fishman S, Fritz Haake, Gaunt J A, Gradshteyn I S, Haake F, Hasegawa H H, Joachim Weber, Kato T, Khodas M, Khodas M, Manderfeld C, Petr A Braun, Petr Seba, Pollicott M, Reed M, Ruelle D, Titchmarsh E C, Zirnbauer M R   +24 more
core   +1 more source

Intelligent Supportive System for People with Profound Intellectual and Multiple Disabilities

Advanced Intelligent Systems, Volume 8, Issue 1, January 2026.
A holistic INSENSION system is developed—a novel intelligent decision support system leveraging state‐of‐the‐art noninvasive audio‐visual sensor technologies together with machine learning algorithms and expert knowledge, to detect and interpret behaviors and communications (nonverbal signals—NVSs) of people with PIMD in challenging real‐world ...
Gašper Slapničar, Michał Kosiedowski, Arkadiusz Radziuk, Erik Dovgan, Torsten Hammann, Meike Engelhardt, Christin Kupitz, Carmen Campomanes‐Alvarez, Dorota Janczewska, Peter Zentel, Mitja Luštrek   +10 more
wiley   +1 more source

Feasibility of Drone-Mounted Camera for Real-Time MA-rPPG in Smart Mirror Systems

Applied Sciences
Remote photoplethysmography (rPPG) enables contactless estimation of cardiovascular signals from video, but most existing studies assume a fixed, stationary camera.
Mohammad Afif Kasno, Yong-Sik Choi, Jin-Woo Jung   +2 more
doaj   +1 more source

Evaluating RGB channels in remote photoplethysmography: a comparative study with contact-based PPG

Frontiers in Physiology, 2023
Remote photoplethysmography (rPPG) provides a non-contact method for measuring blood volume changes. In this study, we compared rPPG signals obtained from video cameras with traditional contact-based photoplethysmography (cPPG) to assess the ...
Rodrigo Castellano Ontiveros, Rodrigo Castellano Ontiveros, Mohamed Elgendi, Giuseppe Missale, Giuseppe Missale, Carlo Menon   +5 more
doaj   +1 more source