Results 21 to 30 of about 1,082,967 (295)

Meta-modeling for urban noise mapping

open access: yesThe Journal of the Acoustical Society of America, 2020
Urban noise mapping generally consists of simulating the emission and attenuation of noise in an area by following rules such as common noise assessment methods. The computational cost makes these models unsuitable for applications such as uncertainty quantification, where thousands of simulations may be required.
Lesieur, Antoine   +3 more
openaire   +3 more sources

Assessment of Train Noise at Platforms in Underground Metro Stations

open access: yesCivil and Environmental Engineering, 2021
Metro has become one of the most used means among public transit due to its advantages such as mass transit capacity, safety, fast speed, and comfort.
Younes Mohamed N.   +3 more
doaj   +1 more source

Evaluation and analysis of noise levels in Ilorin metropolis, Nigeria [PDF]

open access: yes, 2010
Evaluation and analysis of noise pollution levels have been carried out to determine the level of noise and its sources in Ilorin metropolis. Noise measurements have been done in the morning, at noon, in the evening, and at night to determine noise ...
Oyedepo, Sunday Olayinka
core   +1 more source

Noise load research and development of the complex of noise reduction measures on the example of the building estate in Zhitomir

open access: yesТехнічна інженерія, 2020
In modern conditions of urbanized areas development, the importance of protection from noise exposure is increasing. In connection with the increase in the number of vehicles, industrialization of cities, the growth of transport mobility of the ...
D.V. Shomko   +4 more
doaj   +1 more source

Role of the Colored Noise in Spatio-Temporal Behavior of Two Competing Species [PDF]

open access: yes, 2005
We study the spatial distributions of two randomly interacting species, in the presence of an external multiplicative colored noise. The dynamics of the ecosystem is described by a coupled map lattice model.
Fiasconaro, A.   +2 more
core   +2 more sources

A High Resolution Spatiotemporal Model for In-Vehicle Black Carbon Exposure: Quantifying the In-Vehicle Exposure Reduction Due to the Euro 5 Particulate Matter Standard Legislation

open access: yesAtmosphere, 2017
Several studies have shown that a significant amount of daily air pollution exposure is inhaled during trips. In this study, car drivers assessed their own black carbon exposure under real-life conditions (223 h of data from 2013).
Luc Dekoninck, Luc Int Panis
doaj   +1 more source

Logistic map driven by dichotomous noise [PDF]

open access: yesPhysical Review E, 1993
Bifurcation diagrams and invariant densities are computed and interpreted for a logistic map driven by dichotomous noise. Two deterministic limits are analyzed. Changes in the stability of such a system, when varying the correlation time of the noise, are numerically studied.
Gutiérrez Llorente, José Manuel   +2 more
openaire   +3 more sources

Kent Akustiği ve Ekolojik Çözümler; Bingöl Kent Merkezi Örneği

open access: yesDüzce University Faculty of Forestry Journal of Forestry
Bu araştırmada; Bingöl kent merkezinde gürültü ölçümleri yaparak kentin akustik karakterinin belirlenmesi amaçlanmıştır. Gürültü kirliliği ile ilgili günümüzde risk oluşturan ve gelecekte risk oluşturma ihtimali bulunan alanlar ve bu alanlarda alınması ...
Fatoş Öztekin   +2 more
doaj   +1 more source

Assessment of the level of noise and chemical air pollution in two distinct urban areas

open access: yesRomanian Journal of Ecology & Environmental Chemistry, 2020
In the paper are presented the results of tests on the evaluation of the level of noise and chemical air pollution in two distinct urban areas: an industrial area and an area characterized by heavy road traffic, with a focus on the novelty elements ...
Mihai Bratu   +5 more
doaj   +1 more source

A fast map-making preconditioner for regular scanning patterns

open access: yes, 2014
High-resolution Maximum Likelihood map-making of the Cosmic Microwave Background is usually performed using Conjugate Gradients with a preconditioner that ignores noise correlations.
Louis, Thibaut, Næss, Sigurd
core   +1 more source

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