Results 21 to 30 of about 1,896,004 (266)

Reduction of Uncertainty in Bolus Transit Time Measurement in Quantitative Fluorescence Angiography

open access: yesCurrent Directions in Biomedical Engineering, 2023
During cerebral revascularization surgeries, blood flow values help surgeons to monitor the quality of the procedure, e.g., to avoid cerebral hyperperfusion syndrome due to excessively enhanced perfusion.
Gao Yang, Weiß Miriam, Nahm Werner
doaj   +1 more source

Portable and Feasible Device to Evaluate the Technique of Swimming Practitioners

open access: yesIEEE Access, 2022
Based on people’s enthusiasm for swimming and their pursuit of swimming skill at a higher level, this paper proposes a non-contact motion guidance system based on optical motion capture technology, which aims to improve their swimming technique ...
Zhenglong Feng   +6 more
doaj   +1 more source

Design of a Tribotester Based on Non-Contact Displacement Measurements

open access: yesMicromachines, 2019
A tribotester with an integrated load sensor based on a strain gauge is typically used to measure the friction coefficient generated by the contact-related sliding motion of two objects. Since the friction coefficient is obtained by dividing the measured
Chang-Lae Kim, Yoon-Gyung Sung
doaj   +1 more source

Non-Contact and Non-Intrusive Add-on IoT Device for Wireless Remote Elevator Control

open access: yesApplied Sciences, 2023
This work proposes an Internet-of-Things (IoT) device for remote elevator control. The new contribution of this proposal to the state-of-the-art is that it can convert a manually operated elevator into a remote controlled elevator without requiring any ...
Elena Rubies   +3 more
doaj   +1 more source

Robust Pulse Rate Measurements from Facial Videos in Diverse Environments

open access: yesSensors, 2022
Pulse wave and pulse rate are important indicators of cardiovascular health. Technologies that can check the pulse by contacting the skin with optical sensors built into smart devices have been developed.
Jinsoo Park, Kwangseok Hong
doaj   +1 more source

Implementation of Thermal Camera for Non-Contact Physiological Measurement: A Systematic Review

open access: yesSensors, 2021
Non-contact physiological measurements based on image sensors have developed rapidly in recent years. Among them, thermal cameras have the advantage of measuring temperature in the environment without light and have potential to develop physiological ...
Martin Clinton Tosima Manullang   +3 more
doaj   +1 more source

High-Precision Tunneling Magnetoresistance (TMR) Current Sensor for Weak Current Measurement in Smart Grid Applications

open access: yesMicromachines
To meet the demand for high-precision, high-resolution measurement of weak currents in smart grids, this article presents the design of a current sensor based on the tunneling magnetoresistance (TMR) effect.
Yong Xu, Zhenhu Jin, Jiamin Chen
doaj   +1 more source

Evaluation of Remote Photoplethysmography Measurement Conditions toward Telemedicine Applications

open access: yesSensors, 2021
Camera-based remote photoplethysmography (rPPG) is a low-cost and casual non-contact heart rate measurement method suitable for telemedicine. Several factors affect the accuracy of measuring the heart rate and heart rate variability (HRV) using rPPG ...
Akito Tohma   +4 more
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld   +5 more
wiley   +1 more source

Non-Contact Measurement of Infant Respiratory Rate Based on Video using Pose Estimation and Optical Flow Analysis

open access: yesJurnal Elkomika
Non-contact respiratory rate measurement in infants presents an innovative alternative to traditional contact-based methods, which often lead to discomfort.
NURUL KHAIRA SABILA, MOHAMMAD IKHSAN
doaj   +1 more source

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