Results 41 to 50 of about 1,340,818 (215)

Model of an automated biotechnical system for analyzing pulseograms as a kind of edge devices

open access: yesJournal of Edge Computing, 2023
The rapid development of computer biometrics over the past 2-3 decades is largely due to the development and widespread introduction into clinical practice of new methods of studying human body health, including pulse methods.
Tetiana M. Nikitchuk   +3 more
doaj   +1 more source

Developing classification indices for Chinese pulse diagnosis [PDF]

open access: yesComplementary Therapies in Medicine, Vol. 15, No. 3, pp. 190-198, 2007, 2014
Aim: To develop classification criteria for Chinese pulse diagnosis and to objectify the ancient diagnostic technique. Methods: Chinese pulse curves are treated as wave signals. Multidimensional variable analysis is performed to provide the best curve fit between the recorded Chinese pulse waveforms and the collective Gamma density functions.
arxiv   +1 more source

Pulse wave response characteristics for thickness and hardness of the cover layer in pulse sensors to measure radial artery pulse

open access: yesBioMedical Engineering OnLine, 2018
Background Piezo-resistive pressure sensors are widely used for measuring pulse waves of the radial artery. Pulse sensors are generally fabricated with a cover layer because pressure sensors without a cover layer are fragile when they come into direct ...
Min-Ho Jun   +3 more
doaj   +1 more source

YI 1.8 A Computational Model-Based Study on the Effect of Abdominal Aortic Aneurysm on Pulse Wave Morphology

open access: yesArtery Research, 2020
Background: Abdominal aortic aneurysm (AAA) is usually asymptomatic and has an extremely high mortality if rupture occurs. Therefore, early detection and intervention are important.
Tianqi Wang   +2 more
doaj   +1 more source

Modeling the Pulse Signal by Wave-Shape Function and Analyzing by Synchrosqueezing Transform. [PDF]

open access: yesPLoS ONE, 2016
We apply the recently developed adaptive non-harmonic model based on the wave-shape function, as well as the time-frequency analysis tool called synchrosqueezing transform (SST) to model and analyze oscillatory physiological signals.
Hau-Tieng Wu   +6 more
doaj   +1 more source

Reproducibility of pulse-wave analysis and pulse-wave velocity determination in chronic kidney disease [PDF]

open access: yesNephrology Dialysis Transplantation, 2007
Indices of central arterial stiffness, derived by use of applanation tonometry, have shown to be strong independent predictors of cardiovascular morbidity and mortality in patients with chronic kidney disease (CKD). The objective of this study was to evaluate the intra- and inter-observer and day-to-day reproducibility of pulse-wave analysis (PWA) and ...
Frimodt-Møller, Marie   +3 more
openaire   +4 more sources

Attosecond helical pulses [PDF]

open access: yesPhys. Rev. A 100, 033826 (2019), 2019
We find a solution of the wave equation in the paraxial approximation that describes the attosecond pulses with spatiotemporal helical structure in the phase and in the intensity recently generated by means of highly nonlinear optical processes driven by visible or infrared femtosecond vortex pulses.
arxiv   +1 more source

Numerical Investigation on the Response Characteristics of Hypersonic Boundary Layer under Different Types of Finite Amplitude Pulse Disturbance Waves

open access: yesJournal of Applied Fluid Mechanics, 2021
The hypersonic transient flow pass a blunt cone under three types of pulse disturbances is calculated using DNS. The response characteristic of hypersonic boundary layer among different types of pulse disturbance is compared.
X. Tang, J. Yu, H. Zhang, H. Li, M. Shi
doaj  

Large time asymptotics of solutions to the short-pulse equation [PDF]

open access: yesNoDEA Nonlinear Differential Equations Appl. 24 (2017), no. 4, Art. 42, 24 pp, 2016
We consider the long-time behavior of solutions to the short-pulse equation. Using the method of testing by wave packets, we prove small data global existence and modified scattering.
arxiv   +1 more source

Pulse wave extraction and dual domain analysis

open access: yesDianzi Jishu Yingyong, 2019
Two methods for measuring pulse wave using either a pressure or an optical sensor are studied and compared. A model for determining the optimal external force for restraining the pressure sensor is proposed. Pulse waves are measured on 20 volunteers. The
Wang Qian   +3 more
doaj   +1 more source

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