Results 1 to 10 of about 56,992 (193)

Assessing Mental Health and Emotional States by Using Smartphone Photoplethysmography–Based Digital Pulse Waveform Analysis: Cross-Sectional Observational Study [PDF]

JMIR mHealth and uHealth
BackgroundPulse characteristics are well-established biomarkers of physical health; however, their relevance to psychological well-being remains insufficiently explored.
Ivan Liu, Luming Hu, Jing Luo, Chang Liu, Qi Zhong, Shiguang Ni   +5 more
doaj   +2 more sources

The effect of distance between lens and water surface on the acoustic characteristics induced by a 532 nm nanosecond laser under water

Results in Optics, 2021
Experimental and simulation investigations on laser-induced acoustic wave propagation and the optical refraction effects by varying the focusing lens distance from the water-surface have been presented.
Xiaosong Shi, Xun Gao, Atif Hussain, Jingquan Lin   +3 more
doaj   +1 more source

Evaluating the capabilities and challenges of layer-fMRI VASO at 3T

Aperture Neuro, 2023
Sub-millimeter functional imaging has the potential to capture cortical layer–specific functional information flow within and across brain systems. Recent sequence advancements of fMRI signal readout and contrast generations resulted in wide adaptation ...
Laurentius Huber, Lisa Kronbichler, Rüdiger Stirnberg, Philipp Ehses, Tony Stöcker, Sara Fernández-Cabello, Benedikt A. Poser, Martin Kronbichler   +7 more
doaj   +1 more source

Capture-aware bit-detecting M-ary tree protocol for RFID tag identification

Tongxin xuebao, 2021
In passive radio frequency identification (RFID) systems, the capture effect may occur that the reader is possible to successfully decode the strongest signal when multiple tags reply simultaneously.In this situation, the weaker signals will be covered ...
Lijuan ZHANG, Mingqiu FAN, Lei LEI, Yong WANG, Daishu YUAN   +4 more
doaj   +2 more sources

Evaluation of the eastern equatorial Pacific SST seasonal cycle in CMIP5 models [PDF]

Ocean Science, 2014
The annual cycle of sea surface temperature (SST) in the eastern equatorial Pacific (EEP) has the largest amplitude in the tropical oceans, but it is poorly represented in the coupled general circulation models (CGCMs) of the Coupled Model ...
Z. Y. Song, H. L. Liu, C. Z. Wang, L. P. Zhang, F. L. Qiao   +4 more
doaj   +1 more source

Spatiotemporal variability of NO₂ and PM_2.5 over Eastern China: observational and model analyses with a novel statistical method [PDF]

Atmospheric Chemistry and Physics, 2018
Eastern China (27–41° N, 110–123° E) is heavily polluted by nitrogen dioxide (NO2), particulate matter with aerodynamic diameter below 2.5 µm (PM2.5), and other air pollutants.
M. Liu, J. Lin, Y. Wang, Y. Wang, Y. Sun, B. Zheng, J. Shao, L. Chen, Y. Zheng, J. Chen, J. Chen, T.-M. Fu, Y. Yan, Q. Zhang, Z. Wu, Z. Wu   +15 more
doaj   +1 more source

A 60-year ice-core record of regional climate from Adélie Land, coastal Antarctica [PDF]

The Cryosphere, 2017
A 22.4 m-long shallow firn core was extracted during the 2006/2007 field season from coastal Adélie Land. Annual layer counting based on subannual analyses of δ18O and major chemical components was combined with 5 reference years associated with nuclear ...
S. Goursaud, V. Masson-Delmotte, V. Favier, S. Preunkert, M. Fily, H. Gallée, B. Jourdain, M. Legrand, O. Magand, B. Minster, M. Werner   +10 more
doaj   +1 more source

An Observational and Model Characterization of Vertical Structure of Wind Fields over Eastern United States: A Case Study of Sterling, Virginia

Advances in Meteorology, 2016
The performance of twenty GCMs that participated in the Coupled Model Intercomparison Phase 5 (CMIP5) is evaluated at Sterling, Virginia, by comparing model outputs with radiosonde observational dataset and reanalysis dataset.
Sium Gebremariam, Belay Demoz, Churchill Okonkwo, Ricardo K. Sakai   +3 more
doaj   +1 more source

Advanced signal analysis for high-impedance fault detection in distribution systems: a dynamic Hilbert transform method

Frontiers in Energy Research
This paper presents a novel approach for detecting high-impedance faults (HIF) in distribution systems that uses the Hilbert transform. Our approach is based on determining the instantaneous frequency of signals and detecting deviations from a reference ...
Vyshnavi Gogula, Belwin Edward
doaj   +1 more source

Equatorial convection controls boreal summer intraseasonal oscillations in the present and future climates

npj Climate and Atmospheric Science
The boreal summer intraseasonal oscillation (BSISO) is the major mode of tropical intraseasonal variability during the Indian summer monsoon (ISM), it partly controls the dry and wet spells of the ISM and thus is crucial for agricultural yield in the ...
Aditya Kottapalli, P. N. Vinayachandran
doaj   +1 more source