Results 21 to 30 of about 370,474 (118)
Applied Sciences, 2021 Low-frequency audible noise generated by the magnetostriction effect inherent to the operation of power transformers has become a major drawback, especially in cases where the electrical substation is located in urban areas subject to strict ...
Rogerio Regazzi +7 more
doaj +1 more source
Low-Frequency Seismic Noise Properties in the Japanese Islands
Entropy, 2021 The records of seismic noise in Japan for the period of 1997–2020, which includes the Tohoku seismic catastrophe on 11 March 2011, are considered. The following properties of noise are analyzed: The wavelet-based Donoho–Johnston index, the singularity ...
Alexey Lyubushin
doaj +1 more source
Application of Low-Frequency Processing Method Based on VMD Algorithm in Blasting Signal Processing
Shock and Vibration, 2022 In the field of blasting vibration signal analysis, accurate removal of low-frequency noise in the signal has important practical significance. In view of the shortcomings of the existing methods, such as cumbersome calculation and limited scope of ...
Bei Jia +3 more
doaj +1 more source
Data-Driven Modeling of Low Frequency Noise Using Capture-Emission Energy Maps
Applied Sciences, 2020 A new approach for modeling low frequency noise is presented to enable the predictions of noise behavior from negative bias temperature instability (NBTI). The noise model is based on a capture-emission energy (CEE) map describing the probability density
Jonghwan Lee
doaj +1 more source
Study and Assessment of Low Frequency Noise in Occupational Settings
Archives of Acoustics, 2015 Low frequency noise is one of the most harmful factors occurring in human working and living environment. Low frequency noise components from 20 to 250 Hz are often the cause of employee complaints.
Adel M. SHEHAP +2 more
doaj +1 more source
Noise Annoyance and Perception by Low-Frequency Noise in Students
Archives of Occupational Health, 2019 Background: Low-frequency noise as a detrimental occupational and environmental factor which can cause noise annoyance. In addition to noise, factors such as sensitivity and awareness of adverse health effects of noise seem to play an important role in ...
Siavash Etemadinezhad +4 more
doaj
Advanced ScienceHardware neuromorphic systems are crucial for the energy‐efficient processing of massive amounts of data. Among various candidates, hafnium oxide ferroelectric tunnel junctions (FTJs) are highly promising for artificial synaptic devices.
Ryun‐Han Koo +9 more
doaj +1 more source
Low phase noise microwave frequency synthesizer for cold atom clock
AIP Advances, 2019 We present a low phase noise microwave frequency synthesizer for the integrating sphere cold atom clock. The synthesizer is based on an ultralow-phase-noise oven-controlled crystal oscillator and employs a phase-locking technique.
Mingyuan Yu +8 more
doaj +1 more source
Does low frequency noise affect human mental performance?
Archives of Acoustics, 2004 To study the influence of low frequency noise (LFN) on mental performance and subjective well-being, 192 male subjects, categorised in terms of sensitivity to noise in general, and to LFN in particular, worked with four standardised ...
M. Pawlaczyk-Łuszczyńska +5 more
doaj
Evaluation of annoyance from low frequency noise under laboratory conditions
Noise and Health, 2010 The aim of the study was to investigate the annoyance of low frequency noise (LFN) at levels normally prevailing at workplaces in control rooms and office-like areas. Two different laboratory experiments were carried out. The first experiment included 55
Malgorzata Pawlaczyk-Luszczynska +3 more
doaj +1 more source