Results 261 to 270 of about 203,102 (303)
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Spatial interpolation of noise monitor levels
The Journal of the Acoustical Society of America, 2017Continuously recording noise monitoring stations provide feedback of the noise environment at monitor locations. While this feedback is useful, it only provides information at a few point locations, and in many cases it is of interest to know the noise level(s) at the locations between and beyond noise monitoring locations.
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Optimization of ambient seismic noise interferometry to monitor groundwater level variations.
2020<p>&#160;In this work, we test the cross-correlation of ambient seismic noise method in monitoring underground water variations. Within this perspective we applied the abovementioned technique to study the water table changes occurring both in areas exploited for drinking water needs and inside landslides.
Taruselli M. +4 more
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On-Chip monitors of supply noise generated by system-level ESD
2017 39th Electrical Overstress/Electrostatic Discharge Symposium (EOS/ESD), 2017Two supply noise monitor circuits are demonstrated on a 130-nm test chip. These monitors are capable of providing quantitative measurements of on-chip supply voltage perturbations resulting from system-level ESD. Circuit-level simulations reproduce all trends found in the measurement results.
Nicholas Thomson +3 more
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Monitoring the anomalous scattering signal and noise levels in X-ray diffraction of crystals
Acta Crystallographica Section D Biological Crystallography, 2004A statistical index R(as) is proposed in order to monitor the overall signal-to-noise ratio in an anomalous scattering data set. In this approach, symmetry-equivalent reflections are merged and grouped into centric and non-centric subsets. Reflections in the centric subset, which in theory should be equal, are used to estimate the noise level in the ...
Zheng-Qing, Fu +2 more
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Evaluation of smartphone sound level meter applications as a reliable tool for noise monitoring
Journal of Occupational and Environmental Hygiene, 2019Noise is a constant and ongoing health hazard across many workplaces and industries worldwide. The effective management of noise-related health effects is primarily dependent on accurate measurements of sound levels. The accuracy and feasibility of smartphone sound level meter applications (apps) for noise monitoring in occupational and environmental ...
Travis McLennon +3 more
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[Noise level in the NICU: Impact of monitoring equipment].
Archives de pediatrie : organe officiel de la Societe francaise de pediatrie, 2018The sound level in the neonatal intensive care unit (NICU) may induce adverse effects for neonates, their family, and the staff. This study evaluated the sound level in a NICU before and after the implementation of an educational program.A baseline audit determined the most exposed area of the NICU and the most exposed periods over 24 h.
C, Degorre +6 more
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Rerouting in Quantum Wrapper Networks by Monitoring Single-Photon Level Noise
Optical Fiber Communication Conference (OFC) 2025We demonstrate routing polarization-entangled photon payloads multiplexed with classical datagram headers. Our testbed quantum network guarantees >77% interference visibility as a quality of transmission metric by monitoring single-photon level noise due to coexisting classical traffic.
Mehmet Berkay On +5 more
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The Journal of the Acoustical Society of America, 2013
A hybrid geostatistical-acoustical (geo-acoustic) model is proposed as a method for estimating single-event noise levels over a large region from data obtained from a small number of noise monitors. The geo-acoustic model is developed using geostatistical theory and an environmental acoustic-propagation-based regression model.
Edward T. Nykaza, Anthony A. Atchley
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A hybrid geostatistical-acoustical (geo-acoustic) model is proposed as a method for estimating single-event noise levels over a large region from data obtained from a small number of noise monitors. The geo-acoustic model is developed using geostatistical theory and an environmental acoustic-propagation-based regression model.
Edward T. Nykaza, Anthony A. Atchley
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Knowledge-based wireless sensors using sound pressure level for noise pollution monitoring
2011 11th International Conference on Intelligent Systems Design and Applications, 2011Over the last few years, there is a growing interest in monitoring noise pollution in urban areas and some recent studies have proposed the deployment of Wireless Sensor Networks for this task. Although the noise indicators defined by European Union directive 2002/49/EC can be calculated by sensor nodes, the noise perception is affected by subjective ...
J. A. Mariscal-Ramirez +3 more
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Monitoring time-varying noise levels and perceived noisiness in hospital lobbies
Building Acoustics, 2020The aim of this study was to verify what statistical attributes are effective descriptors of time-varying noise levels due to road traffic and complex medical routine activities in hospital lobbies. In a psychoacoustic experiment, respondents provided perceived noisiness ratings affected by 12 noise events in hospital lobbies ...
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