Results 1 to 10 of about 1,948,990 (300)

A New Automatic QT-Interval Measurement Method for Wireless ECG Monitoring System Using Smartphone [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2021
QT-interval prolongation is an important parameter for heart arrhythmia diagnosis. It is the time interval from QRS-onset to the T-end of electrocardiogram (ECG). Manual measurement of QT-interval, especially for 12-leads ECG, is time-consuming.
Trio Pambudi Utomo   +2 more
doaj   +1 more source

Technology Independent ASIC Based Time to Digital Converter

open access: yesIEEE Access, 2020
This paper proposes a design methodology for a synthesizable, fully digital TDC architecture. The TDC was implemented using a hardware description language (HDL), which improves portability between platforms and technologies and significantly reduces ...
Rui Machado   +3 more
doaj   +1 more source

A NEW APPROACH FOR ACCURACY IMPROVEMENT OF PULSED LIDAR REMOTE SENSING DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
In remote sensing applications, the accuracy of time interval measurement is one of the most important parameters that affect the quality of pulsed lidar data.
G. Zhou   +9 more
doaj   +1 more source

Investigation of noise in surface topography measurement using structured illumination microscopy [PDF]

open access: yesMetrology and Measurement Systems, 2021
Noise is a fundamental metrological characteristic of the instrument in surface topography measurement. Therefore, measurement noise should be thoroughly studied in practical measurement to understand instrument performance and optimize measurement ...
Zhen Li, Sophie Gröger
doaj   +1 more source

Measurable maximal energy and minimal time interval [PDF]

open access: yesCanadian Journal of Physics, 2014
The possibility of finding the measurable maximal energy and the minimal time interval is discussed in different quantum aspects. It is found that the linear generalized uncertainty principle (GUP) approach gives a nonphysical result. Based on large scale Schwarzschild solution, the quadratic GUP approach is utilized. The calculations are performed at
Dahab, Eiman Abou El   +1 more
openaire   +2 more sources

Distance-Resolving Raman Radar Based on a Time-Correlated CMOS Single-Photon Avalanche Diode Line Sensor

open access: yesSensors, 2018
Remote Raman spectroscopy is widely used to detect minerals, explosives and air pollution, for example. One of its main problems, however, is background radiation that is caused by ambient light and sample fluorescence.
Jere Kekkonen   +3 more
doaj   +1 more source

Trends of Initial Orbit Determination Accuracy for Time Interval Change Between Three Pairs of Measurement Datas [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
Gauss and Laplace methods for initial orbit determination (IOD) are classical orbit determination tools and have been used very efficiently in optical satellite surveillance system.
Okjun Hwang, Jung Hyun Jo
doaj   +1 more source

Classical “Zeno” and “Anti-Zeno” effect? [PDF]

open access: yes, 2017
If one continuously measures a decaying system, the system will appear to never decay that was called quantum Zeno effect. The continuous measurement is defined by a sequence of measurements whose time interval t between measurements approaches zero ...
Boretz, Yingyue Li
core   +1 more source

A High-Speed Fully Digital Phase-Synchronizer Implemented in a Field Programmable Gate Array Device

open access: yesMetrology and Measurement Systems, 2017
Most systems used in quantum physics experiments require the efficient and simultaneous recording different multi-photon coincidence detection events. In such experiments, the single-photon gated counting systems can be applicable.
Frankowski Robert   +3 more
doaj   +1 more source

A Novel Joint TDOA/FDOA Passive Localization Scheme Using Interval Intersection Algorithm

open access: yesInformation, 2021
Due to the large measurement error in the practical non-cooperative scene, the passive localization algorithms based on traditional numerical calculation using time difference of arrival (TDOA) and frequency difference of arrival (FDOA) often have no ...
Lingyu Ai   +5 more
doaj   +1 more source

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