Results 21 to 30 of about 755,676 (315)

Large Noise Level Estimation

open access: yesInternational Journal of Bifurcation and Chaos, 2003
We generalize a method of noise estimation for chaotic time series due to [Schreiber, 1993] in cases where the noise level is relatively large. The noise estimation is based on the correlation integral, which, for small amounts of noise, is not affected by the attractor's curvature effects.
Leontitsis, Al., Pange, J., Bountis, T.
openaire   +3 more sources

Assessment of Noise from Transportation Systems in Ilorin, Nigeria

open access: yesNigerian Journal of Technological Development, 2019
Noise from transportation systems is unavoidable in urban areas and can be harmful to human health. The noise generated by selected transportations systems in Ilorin, an urban area in central Nigeria, was studied by direct measurements and the use of ...
S. O. Bilewu   +3 more
doaj   +2 more sources

The importance of construction contracts and tools in preserving the environment [PDF]

open access: yesمجلة الاجتهاد للدراسات القانونية والاقتصادية, 2020
The Algerian legislator has worked to preserve the environmental system in the laws of construction and construction in the same manner as Law 90/29 on construction and construction, and Executive Decree No.
zenguila soltan
doaj  

Noise levels in dental schools [PDF]

open access: yesEuropean Journal of Dental Education, 2006
Objective:  To measure and analyse noise levels in the learning–teaching activities at the Dental School of the University of Porto (Portugal).Materials and methods:  Sound levels were measured in five different practice areas and laboratories, selected as representative of a variety of learning–teaching activities.
Sampaio-Fernandes J.   +4 more
openaire   +3 more sources

Investigation into the dependence of noise generated by standing cars on the engine power / Stovinčių lengvųjų automobilių keliamo triukšmo priklausomybės nuo variklio darbinio tūrio tyrimai

open access: yesMokslas: Lietuvos Ateitis, 2012
Ambient noise harms a number of citizens in Europe. The major sources of environmental noise are that generated by cars in streets, parking lots, railway lines and airports as well as noise from local sources (fans, transformers).
Julius Gineika, Raimondas Grubliauskas
doaj   +1 more source

Investigation of noise spectra in the frame crane cabins

open access: yesAdvanced Engineering Research, 2016
Рассмотрены методики виброакустических расчетов для кабин козловых кранов, позволяющих как при проектировании, так и при ремонте и модернизации обеспечить выполнение санитарных норм шума путем рационального выбора диссипативных, звукоизолирующих и ...
Kirill O. Kobzev   +2 more
doaj   +1 more source

Analysis of The Noise Level of The Diesel Engine with 1100 RPM in The Indoor Condition

open access: yesJournal of Applied Engineering and Technological Science, 2022
One of the weaknesses of diesel engines that most users complain about is the vibration and the noise. Therefore, it is very important to know the noise level of an engine in a room to consider the allowed duration of the exposure time, which is the aim
Nanang Qosim
doaj   +1 more source

The masking-level difference in low-noise noise.

open access: yesThe Journal of the Acoustical Society of America, 1996
The masking-level difference for a 500-Hz pure tone signal was examined for an interaurally in-phase noise having different degrees of power fluctuations. MLDs were reliably smaller in noise having relatively low power fluctuations. This effect was due to the following trends in the threshold data. (1) For all subjects, the So threshold improved as the
J W, Hall, J H, Grose, W M, Hartmann
openaire   +3 more sources

The influence of audience participatory noise on sound levels at live events [PDF]

open access: yes, 2022
Although the importance of audience participation at events, in terms of verbal and non-verbal appreciation, is well recognised, the by-product, noise, primarily in the form of applause, cheering and whistling, has been subject to little study in terms ...
Mulder, J.   +4 more
core  

Research on Motor Transport Produced Noise on Gravel and Asphalt Roads

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2010
Vehicles in motion on roads are the main source of noise in the environment. The noise in a car is created by structural noises from car construction, originated from vibrations in an engine, cabin, silencer, wheels and tires.
Linas Leipus   +2 more
doaj   +1 more source

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