Results 1 to 10 of about 4,649,450 (252)

Classification of Noise Sources for Port Area Noise Mapping [PDF]

open access: yesEnvironments - MDPI, 2021
Maritime transportation is recognized to have advantages in terms of environmental impact compared to other forms of transportation. However, an increment in traffic volumes will also produce an increase in noise emissions in the surroundings for a greener source, as ports are frequently surrounded by urban areas.
Luca Fredianelli   +2 more
exaly   +5 more sources

Progress of the Identification of Noise Sources and Analysis of Noise Source Mechanisms in Jets

open access: yesHangkong gongcheng jinzhan, 2020
Jet noise is the dominating component of aircraft aerodynamic noise, and causes severe environmental pollution and health threats. Yet lack of a fundamental understanding of how turbulent eddies generate noise radiation poses great challenges in ...
ZHAI Chaohui, LIU Yanchen, DU Yongle
doaj   +2 more sources

Axonal noise as a source of synaptic variability. [PDF]

open access: yesPLoS Computational Biology, 2014
Post-synaptic potential (PSP) variability is typically attributed to mechanisms inside synapses, yet recent advances in experimental methods and biophysical understanding have led us to reconsider the role of axons as highly reliable transmission ...
Ali Neishabouri, A Aldo Faisal
doaj   +6 more sources

Diagnosis of Noise Inside Neonatal Incubators under Free-Field Conditions

open access: yesAcoustics, 2023
The study aims to diagnose the sound pressure levels inside incubators in a controlled environment under free-field conditions. The tests were carried out in a semi-anechoic room under the standard UNE-EN ISO 3745:2012/A1:2018 in three different ...
Francisco Fernández-Zacarías   +3 more
doaj   +1 more source

System to Control the RF Receiver Noise Parameters of the Radiolocation Pre-Search Station P18 Laura [PDF]

open access: yesProblemy Mechatroniki, 2020
The article presents a measuring system that allows the noise parameters of the receiver of a radiolocation station to be controlled. The existing solutions of the radiolocation pre-search station P18 Laura control unit have been adapted to the system.
Stanisław GRZYWIŃSKI   +1 more
doaj   +1 more source

Acoustic conditioning of the neonatal incubator compartment: Improvement proposal

open access: yesFrontiers in Pediatrics, 2022
The objective of this work focuses on the study of the main sources of noise associated with incubators and the acoustic effects that derive from them.
Víctor M. Rodríguez-Montaño   +6 more
doaj   +1 more source

The Importance of Noise Attenuation Levels in Neonatal Incubators

open access: yesAcoustics, 2022
Background: It is known that high noise levels can be harmful to preterm infants, causing physiological and psychological disorders. It is also known that premature babies spend a lot of time in an incubator.
Francisco Fernández-Zacarías   +2 more
doaj   +1 more source

Estimation of Phase Noise in Oscillators with Colored Noise Sources [PDF]

open access: yesIEEE Communications Letters, 2013
In this letter we study the design of algorithms for estimation of phase noise (PN) with colored noise sources. A soft-input maximum a posteriori PN estimator and a modified soft-input extended Kalman smoother are proposed. The performance of the proposed algorithms are compared against those studied in the literature, in terms of mean square error of ...
Mohammad Reza Khanzadi   +2 more
openaire   +2 more sources

Surface Electromyography Signal Processing and Classification Techniques

open access: yesSensors, 2013
Electromyography (EMG) signals are becoming increasingly important in many applications, including clinical/biomedical, prosthesis or rehabilitation devices, human machine interactions, and more.
Tae G. Chang   +5 more
doaj   +1 more source

A Study of the Relationship between Dipole Noise Sources and the Flow Field Parameters around the Rearview Mirror of Passenger Cars

open access: yesApplied Sciences, 2023
When air flows through the mirrors, A-pillars, and other surfaces of a passenger car, airflow separation occurs to generate vorticity and generates aerodynamic noise.
Siwen Zhang   +7 more
doaj   +1 more source

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