Results 21 to 30 of about 11,794,013 (339)

Detection efficiencies of 226Ra and 232Th in different modes of counting of the PRIPYAT-2M spectrometer [PDF]

open access: yesNuclear Technology and Radiation Protection, 2009
Detection efficiencies of 226Ra and 232Th decay products, as well as corresponding minimum detectable activities in different modes of counting of the PRIPYAT-2M spectrometer (integral, when all pulses - coincident and non-coincident, are counted; non ...
Antović Nevenka M., Svrkota Nikola
doaj   +1 more source

Study of 222−220Rn Measurement Systems Based on Electrostatic Collection by Using Geant4+COMSOL Simulation

open access: yesApplied Sciences, 2022
Using Monte Carlo (with Geant4) and COMSOL simulations, the authors have defined a useful tool to reproduce the alpha spectroscopy of 222Rn, 220Rn and their ionized daughters by measurement systems based on electrostatic collection on a silicon detector,
Luigi Rinaldi   +4 more
doaj   +1 more source

Improving the Efficiency and Robustness of Deepfakes Detection through Precise Geometric Features [PDF]

open access: yesComputer Vision and Pattern Recognition, 2021
Deepfakes is a branch of malicious techniques that transplant a target face to the original one in videos, resulting in serious problems such as infringement of copyright, confusion of information, or even public panic.
Zekun Sun   +4 more
semanticscholar   +1 more source

Efficient detection in hyperspectral imagery [PDF]

open access: yesIEEE Transactions on Image Processing, 2001
Hyperspectral sensors collect hundreds of narrow and contiguously spaced spectral bands of data. Such sensors provide fully registered high resolution spatial and spectral images that are invaluable in discriminating between man-made objects and natural clutter backgrounds.
Schweizer, Susan M., Moura, José M. F.
openaire   +3 more sources

Superconducting nanowire single-photon detectors with 98% system detection efficiency at 1550  nm

open access: yesOptica, 2020
Superconducting nanowire single-photon detectors (SNSPDs) are an enabling technology for myriad quantum-optics experiments that require high-efficiency detection, large count rates, and precise timing resolution.
D. Reddy   +4 more
semanticscholar   +1 more source

Efficient race detection with futures [PDF]

open access: yesProceedings of the 24th Symposium on Principles and Practice of Parallel Programming, 2019
This paper addresses the problem of provably efficient and practically good on-the-fly determinacy race detection in task parallel programs that use futures. Prior works determinacy race detection have mostly focused on either task parallel programs that follow a series-parallel dependence structure or ones with unrestricted use of futures that ...
Utterback, Robert   +3 more
openaire   +2 more sources

Efficient Detection of Unusual Words [PDF]

open access: yesJournal of Computational Biology, 2000
Words that are, by some measure, over- or underrepresented in the context of larger sequences have been variously implicated in biological functions and mechanisms. In most approaches to such anomaly detections, the words (up to a certain length) are enumerated more or less exhaustively and are individually checked in terms of observed and expected ...
APOSTOLICO, ALBERTO   +3 more
openaire   +3 more sources

Quantitative monitoring of 131I in iodine cartridge using probability density calibration method of disk source

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2022
In this study, we used the integral method of the probability density function to evaluate the detection efficiency of an inhomogeneous iodine cartridge source by fitting the function relationship between the efficiency of the 131I γ-ray and the height ...
XU Feng   +5 more
doaj   +1 more source

Influence of various geometries on detection efficiency of polystyrene, polyvinyl-toluene, and sodium iodide detectors using Geant4 [PDF]

open access: yesNuclear Technology and Radiation Protection, 2015
In this work, comparative study on energy dependence of absorbed, intrinsic, photo-peak and absolute total efficiency of polystyrene plastic scintillation fiber and polyvinyl-toluene detectors with NaI(Tl) scintillation detectors has been ...
Mirza Sikander M.   +3 more
doaj   +1 more source

Effects of Day/Night Factor on the Detection Performance of FY4A Lightning Mapping Imager in Hainan, China

open access: yesRemote Sensing, 2021
In this study, the effect of day/night factor on the detection performance of the FY4A lightning mapping imager (LMI) is evaluated using the Bayesian theorem, and by comparing it to the measurements made by a ground-based low-frequency magnetic field ...
Hao Sun   +7 more
doaj   +1 more source

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