62 research outputs found
Staggering of the Nuclear Charge Radii in a Superfluid Model with Good Particle Number
A simple superfluid model with an effective four body interaction of monopole
pairing type is used to explain the staggering of the charge radii in the
isotope chains. The contribution of deformation and of the particle number
projection are analyzed for the Sn isotopes. Good results are obtained for the
staggering parameters and neutron pairing energies.Comment: RevTex, 19 pages and 4 postscript figures uuencoded and attached. To
appear in Phys. Rev.
Remote heart rate monitoring - Assessment of the Facereader rPPg by Noldus
Remote photoplethysmography (rPPG) allows contactless monitoring of human cardiac activity through a video camera. In this study, we assessed the accuracy and precision for heart rate measurements of the only consumer product available on the market, namely the Facereaderâ„¢ rPPG by Noldus, with respect to a gold standard electrocardiograph. Twenty-four healthy participants were asked to sit in front of a computer screen and alternate two periods of rest with two stress tests (i.e. Go/No-Go task), while their heart rate was simultaneously acquired for 20 minutes using the ECG criterion measure and the Facereaderâ„¢ rPPG. Results show that the Facereaderâ„¢ rPPG tends to overestimate lower heart rates and underestimate higher heart rates compared to the ECG. The Facereaderâ„¢ rPPG revealed a mean bias of 9.8 bpm, the 95% limits of agreement (LoA) ranged from almost -30 up to +50 bpm. These results suggest that whilst the rPPG Facereaderâ„¢ technology has potential for contactless heart rate monitoring, its predictions are inaccurate for higher heart rates, with unacceptable precision across the entire range, rendering its estimates unreliable for monitoring individuals
Optogalvanische Spektroskopie am Europium
SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
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