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Geoprocessing applied to the assessment of environmental noise: a case study in the city of Sorocaba, São Paulo, Brazil

Costa, Samuel Barsanelli; Lourenço, Roberto Wagner
Fonte: Springer Publicador: Springer
Tipo: Conferência ou Objeto de Conferência Formato: 329-337
ENG
Relevância na Pesquisa
66.2%
Noise mapping has been used as an instrument for assessment of environmental noise, helping to support decision making on urban planning. In Brazil, urban noise is not yet recognized as a major environmental problem by the government. Besides, cities that have databases to drive acoustic simulations, making use of advanced noise mapping systems, are rare. This study sought an alternative method of noise mapping through the use of geoprocessing, which is feasible for the Brazilian reality and for other developing countries. The area chosen for the study was the central zone of the city of Sorocaba, located in So Paulo State, Brazil. The proposed method was effective in the spatial evaluation of equivalent sound pressure level. The results showed an urban area with high noise levels that exceed the legal standard, posing a threat to the welfare of the population.

Avaliação da aplicação da norma de ruido ambiental em municipios da região de São João da Boa Vista; Evaluation of environmental noise standard applied in cities around São João da Boa Vista-SP

Dulce Claudia Jose Viana Santos
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 21/12/2004 PT
Relevância na Pesquisa
56.26%
O ruído aparece como um dos problemas ambientais mais freqüentes nos grandes centros urbanos. As atividades ruidosas estão atingindo também as cidades menores do interior do Estado de São Paulo. Nessas cidades nem sempre existem legislações específicas relacionadas a ruído ou condições técnicas para o controle das fontes ruidosas. Nos casos mais graves as reclamações por incômodo devido a ruído chegam a via judiciária onde um perito é designado para fazer a avaliação do ruído ambiental baseado na norma NBR 10151-Avaliação do ruído em áreas habitadas, visando o conforto da comunidade. Nesse trabalho o enfoque de ruído ambiental é analisado através do levantamento dos incômodos gerados por fontes sonoras fixas em dezesseis cidades da região da Equipe de Perícias de São João da Boa Vista. As fontes sonoras são identificadas, mensuradas e catalogadas como aceitáveis ou não de acordo com o nível de critério de avaliação da norma NBR 10151. Paralelamente foi levantado junto aos municípios a existência de legislações municipais específicas sobre ruído ambiental e pessoal técnico para avaliação. Os resultados obtidos nesse trabalho indicaram como está sendo tratada a poluição sonora nessas cidades e quais as principais fontes sonoras de incômodo. Verificou-se também que os critérios de avaliação dos ruídos propostos pela Norma são adequados a esses municípios. O trabalho sugere pontos importantes para estabelecimento de uma legislação e procedimentos específicos relativos a ruído para esses municípios; The noise is shown as the most frequent environmental problem in big cities. The noisy activities are getting also in small cities of São Paulo State. In these cities...

Urban form as environmental noise indicators

Oliveira, Marta Isabela Fernandes; Silva, Lígia Torres
Fonte: The Institute of Noise Control Engineering of the USA (INCE/USA) Publicador: The Institute of Noise Control Engineering of the USA (INCE/USA)
Tipo: Conferência ou Objeto de Conferência
Publicado em /08/2012 ENG
Relevância na Pesquisa
56.03%
The urban form affects all systems and all species in an urban context and influences their behavior from the emission of noise, through its course until reaching the receiver, affecting the global climate. This paper seeks to address the problems of the urban environment as an area of interaction between urban forms and urban noise. This interaction is intended to be monitored by urban indicators, comparing the effects of noise propagation in an urban form model. The model of noise prediction (NMPB96), allows the development of studies about noise in facades (Ld, level of noise during the day), resulting in colors associated to noise categories. This study will allow the creation of different scenarios and to foresee, still in the draft phase, the facades exposed to a higher noise level. The effects of noise in facades can be, then, minimized in advance, by adjusting the layout of their typology. In order to validate the model and its results, we compared the values obtained at selected locations by modeling them. The validation of the theoretical curves was done in two phases. The first validation involved the measurement and the modeling of the selected real forms by comparing their receptor points. The second validation was done by calculating the average noise level on the facade of the modeled real forms...

Avaliação do ruído ambiente na envolvente das escolas do 1º ciclo básico da cidade de Braga

Oliveira, Ivone Raquel Soares de
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Trabalho de Conclusão de Curso
Publicado em //2012 POR
Relevância na Pesquisa
46.33%
Dissertação de mestrado integrado em Engenharia Civil; O trabalho desenvolvido ao longo deste projeto de investigação pretende avaliar o ruído ambiente na envolvente de três escolas do 1º ciclo do ensino básico da cidade de Braga. Na avaliação dos níveis de ruído adotou-se três metodologias: avaliação objetiva, avaliação subjetiva e modelação matemática do ruído ambiente. A avaliação objetiva baseou-se na caraterização do ruído ambiente através de medições com um sonómetro que mediu os níveis de pressão sonora no exterior, próximo das fachadas dos edifícios escolares, e no interior das salas de aula. As medições seguiram a norma NP ISO1996:2011, 1-2. Os resultados obtidos nas medições de ruído ambiente no exterior foram comparados com os valores limites de exposição do artigo 11º do Regulamento Geral do Ruído, aprovado pelo Decreto-Lei n.º 9/2007, de 17 de janeiro. A avaliação subjetiva baseou-se na elaboração de inquéritos a alunos do 3º e 4º ano de escolaridade, a professores e a auxiliares de ação educativa. Na modelação matemática do ruído ambiente utilizou-se o método recomendado pela Diretiva 2002/49/CE do Parlamento Europeu e do Conselho de 25 de junho de 2002 relativa à avaliação e gestão do ruído ambiente. Esta diretiva recomenda que para o cálculo do ruído de tráfego rodoviário deve ser utilizado o método provisório de cálculo...

Environmental Noise Affects Auditory Temporal Processing Development and NMDA-2B Receptor Expression in Auditory Cortex

Sun, Wei; Tang, Li; Allman, Brian L.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
46.27%
Auditory temporal processing is essential for sound discrimination and speech comprehension. Under normal developmental conditions, temporal processing acuity improves with age. As recent animal studies have shown that the functional development of the auditory cortex (AC) is impaired by early life exposure to environmental noise (i.e., continuous, moderate-level, white noise), here we investigated whether the normal age-related improvement in temporal processing acuity is sensitive to delayed development of the AC. We used a behavioral paradigm, the gap-induced prepulse inhibition of the acoustic startle reflex, to assess the gap detection threshold, and provide a comparison of temporal processing acuity between environmental noise-reared rats and age-matched controls. Moreover, because age-related changes normally occur in the relative expression of different N-methyl-D-aspartate (NMDA) receptor subunits, we assessed the level of protein expression of NMDA-2A and 2B receptors (NR2A and NR2B respectively) in the AC after environmental noise-rearing. As hypothesized, rats reared in environmental noise showed 1) poor temporal processing acuity as adults (i.e., gap detection threshold remained elevated at a juvenile-like level), and 2) an increased level of NR2B protein expression compared to age-matched controls. This poor temporal processing acuity represented delayed development rather than permanent impairment...

Practical Ranges of Loudness Levels of Various Types of Environmental Noise, Including Traffic Noise, Aircraft Noise, and Industrial Noise

Salomons, Erik M.; Janssen, Sabine A.
Fonte: Molecular Diversity Preservation International (MDPI) Publicador: Molecular Diversity Preservation International (MDPI)
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
46.28%
In environmental noise control one commonly employs the A-weighted sound level as an approximate measure of the effect of noise on people. A measure that is more closely related to direct human perception of noise is the loudness level. At constant A-weighted sound level, the loudness level of a noise signal varies considerably with the shape of the frequency spectrum of the noise signal. In particular the bandwidth of the spectrum has a large effect on the loudness level, due to the effect of critical bands in the human hearing system. The low-frequency content of the spectrum also has an effect on the loudness level. In this note the relation between loudness level and A-weighted sound level is analyzed for various environmental noise spectra, including spectra of traffic noise, aircraft noise, and industrial noise. From loudness levels calculated for these environmental noise spectra, diagrams are constructed that show the relation between loudness level, A-weighted sound level, and shape of the spectrum. The diagrams show that the upper limits of the loudness level for broadband environmental noise spectra are about 20 to 40 phon higher than the lower limits for narrowband spectra, which correspond to the loudness levels of pure tones. The diagrams are useful for assessing limitations and potential improvements of environmental noise control methods and policy based on A-weighted sound levels.

Poor environmental tracking can make extinction risk insensitive to the colour of environmental noise

van de Pol, Martijn; Vindenes, Yngvild; Sæther, Bernt-Erik; Engen, Steinar; Ens, Bruno J.; Oosterbeek, Kees; Tinbergen, Joost M.
Fonte: The Royal Society Publicador: The Royal Society
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
46.23%
The relative importance of environmental colour for extinction risk compared with other aspects of environmental noise (mean and interannual variability) is poorly understood. Such knowledge is currently relevant, as climate change can cause the mean, variability and temporal autocorrelation of environmental variables to change. Here, we predict that the extinction risk of a shorebird population increases with the colour of a key environmental variable: winter temperature. However, the effect is weak compared with the impact of changes in the mean and interannual variability of temperature. Extinction risk was largely insensitive to noise colour, because demographic rates are poor in tracking the colour of the environment. We show that three mechanisms—which probably act in many species—can cause poor environmental tracking: (i) demographic rates that depend nonlinearly on environmental variables filter the noise colour, (ii) demographic rates typically depend on several environmental signals that do not change colour synchronously, and (iii) demographic stochasticity whitens the colour of demographic rates at low population size. We argue that the common practice of assuming perfect environmental tracking may result in overemphasizing the importance of noise colour for extinction risk. Consequently...

Environmental Noise Pollution in the United States: Developing an Effective Public Health Response

Hammer, Monica S.; Swinburn, Tracy K.; Neitzel, Richard L.
Fonte: National Institute of Environmental Health Sciences Publicador: National Institute of Environmental Health Sciences
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
56.11%
Background: Tens of millions of Americans suffer from a range of adverse health outcomes due to noise exposure, including heart disease and hearing loss. Reducing environmental noise pollution is achievable and consistent with national prevention goals, yet there is no national plan to reduce environmental noise pollution.

The link between noise perception and quality of life in South Australia

Nitschke, M.; Tucker, G.; Simon, D.L.; Hansen, A.L.; Pisaniello, D.L.
Fonte: Medknow Publications Publicador: Medknow Publications
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Relevância na Pesquisa
46.23%
Environmental noise is a significant risk factor for a range of short- and long-term adverse health outcomes such as annoyance, cognitive development impairment, sleep disturbance, cardiovascular effects, and psychiatric problems. The aim of this study was to gather standardized quality of life (QOL) data hitherto rarely correlated with noise annoyance by source category. To provide an evidence-base for environmental noise policy development, a representative state-based survey was undertaken in South Australia (SA). A total of 3015 face-to-face interviews were conducted, using a questionnaire addressing noise sources, distances to busy roads and standardized measures of perceived annoyance and QOL. Population weighted descriptive survey and regression analysis. The most common sources of noise annoyances were road transport (27.7%, using a Likert scale, aggregating "little" to "extreme" annoyance), neighbors (22.0%), construction noise (10.0%), air conditioner noise (5.8%), rail transport noise (4.7%), and industry (3.9%). Using the QOL instrument, all eight health dimensions were significantly decreased for those reporting high noise annoyance ("very much" to "extreme") in relation to road transport and neighbors compared to those reporting low annoyance ("none" to "moderate") from these sources. Noise annoyance is common in the SA general population...

Highlights on environmental noise and health research in Central and Eastern Europe, South-East Europe and Newly Independent States

ARGALASOVA-SOBOTOVA Lubica; PAUNOVIC Katarina; BELOJEVIC Goran; JERAM Sonja; RISTOVSKA Gordana; LEKAVICIUTE GADAL JURGITA; PREIS Anna; JURKOVICOVA Jana; SEVCIKOVA Ludmila; SLIWINSKA-KOWALSKA Mariola; STANSFELD Stephen
Fonte: Institute of Noise Control Engineering of Japan and the Acoustical Society of Japan Publicador: Institute of Noise Control Engineering of Japan and the Acoustical Society of Japan
Tipo: Contributions to Conferences Formato: Printed
ENG
Relevância na Pesquisa
56.18%
The adverse effects of noise on health have been intensely explored in the previous fifty years. However, the scope of research conducted in Central and Eastern European countries (CEE), South-East European countries (SEE) and Newly Independent States (NIS) has remained unknown. The aim of this review is to present the variety of studies on non-auditory effects of environmental noise conducted in the past in these countries and to point out the most important issues that need to be addressed in the future. This critical review includes papers on the non-auditory effects of environmental noise and health published since 1965. More than 100 papers were identified by a literature search of all accessible medical and other databases. Authors reviewed scientific journals, conference proceedings and local reports published in national languages. The major endpoints were annoyance, sleep disturbance, cognitive impairment, mental health, subjective well-being, biological/physiological endpoints, cardiovascular disease, endocrine system endpoints and drug consumption. Experimental and exposure assessment studies, field, empirical studies and social surveys are presented. Major sources of environmental noise were road traffic, aircraft and human activities. The target populations were mostly adults. However...

Preparation of guidance for health risk assessment of environmental noise

FRITSCHI Lin; BROWN A.l.; KIM Rokho; KEPHALOPOULOS Stylianos; SCHWELA Dieter
Fonte: Sociedade Portuguesa de Acustica Publicador: Sociedade Portuguesa de Acustica
Tipo: Contributions to Conferences Formato: CD-ROM
ENG
Relevância na Pesquisa
46.25%
In recent years, evidence has accumulated regarding health effects of environmental noise. The WHO European Centre for Environment and Health, Bonn, has organized several meetings of experts over recent years to examine the current state of knowledge, and to further develop approaches for quantifying the effect of noise on health. The outcomes of these meetings are being prepared as an initial guidance document on risk assessment of environmental noise¿quantitative risk assessments based on EBD (environmental burden of disease) methodology and the metric Disability-Adjusted Life Years (DALY). The target audience is primarily policy makers and their technical advisers who need to evaluate the issue of environmental noise in their jurisdictions. This document will provide synthesized reviews of various health effects of environmental noise (cardiovascular disease, cognitive impairment, sleep disturbance, annoyance, hearing impairment and tinnitus), and exemplary estimates, where possible, of the burden of the health outcomes of environmental noise based on exposure-response relationships, exposure prevalence, and disability weights. This paper describes the work that has been undertaken to prepare the guidance, and the structure of each chapter that deals with a particular health outcome: summary of evidence linking noise with the outcome; sources and assumptions regarding the exposure-response relationship and suggested disability weights; and current uncertainties...

Burden of disease from environmental noise: Quantification of healthy life years lost in Europe

Fonte: WHO Regional Office for Europe Publicador: WHO Regional Office for Europe
Tipo: Books Formato: Printed
ENG
Relevância na Pesquisa
46.27%
Health impacts of environmental noise are a growing concern among both the general public and policy-makers in Europe. This report was jointly prepared by the WHO Regional Office for Europe and the Joint Research Centre to provide technical support to policy-makers and their advisers in the quantitative risk assessment of environmental noise, using evidence and data available in Europe. The chapters in this document contain the summary of synthesized reviews of evidence on the relationship between environmental noise and specific health effects, including cardiovascular disease, cognitive impairment, sleep disturbance and tinnitus. A chapter on annoyance is also included. For each outcome, the environmental burden of disease methodology, based on exposure¿response relationship, exposure distribution, background prevalence of disease and disability weights of the outcome, is applied to calculate the burden of disease in terms of disability-adjusted life-years.With conservative assumptions applied to the calculation methods, it is estimated that DALYs lost from environmental noise are 61 000 years for ischaemic heart disease, 45 000 years for cognitive impairment of children, 903 000 years for sleep disturbance, 22 000 years for tinnitus and 587 000 years for annoyance in the European Union member states and other western European countries. These results indicate that at least one million healthy life years are lost every year from traffic-related noise in the western part of Europe. Sleep disturbance and annoyance...

Environmental noise and sleep disturbance: Research in Central, Eastern and South-Eastern Europe and Newly Independent States

RISTOVSKA Gordana; LEKAVICIUTE GADAL JURGITA
Fonte: MEDKNOW PUBLICATIONS Publicador: MEDKNOW PUBLICATIONS
Tipo: Articles in Journals Formato: Printed
ENG
Relevância na Pesquisa
46.23%
Countries from South-East Europe (SEE), Central and Eastern Europe (CEE) and Newly Independent States (NIS) are in the process of harmonization with European environmental noise legislation. However research work on noise and health was performed in some countries independently of harmonization process of adoption and implementation of legislation for environmental noise. Aim of this review is to summarize available evidence for noise induced sleep disturbance in population of CEE, SEE and NIS countries and to give directions for further research work in this field. After systematic search through accessible electronic databases, conference proceedings, PhD thesis, national reports and scientific journals in English and non-English language, we decided to include six papers and one PhD thesis in this review: one paper from former Yugoslavia, one paper from Slovakia, one paper from Lithuania, two papers from Serbia and one paper, as also one PhD thesis from The Former Yugoslav Republic of Macedonia. Noise exposure assessment focused on road traffic noise was mainly performed with objective noise measurements, but also with noise mapping in case of Lithuanian study. Sleep disturbance was assessed with questionnaire based surveys and was assumed from dose–effect relationship between Lnight for road traffic noise and sleep disturbance (for Lithuanian study). Although research evidence on noise and sleep disturbance show to be sufficient for establishing dose-response curves for sleep disturbance in countries where studies were performed...

On-going activities of the European Union institutions to tackle environmental noise

PAVIOTTI Marco; KEPHALOPOULOS Stylianos; NUGENT Colin; RAPACZ Piotr; DE VOS Koen
Fonte: German Acoustical Society (DAGA) Publicador: German Acoustical Society (DAGA)
Tipo: Contributions to Conferences Formato: Printed
ENG
Relevância na Pesquisa
46.29%
The reduction of environmental noise in the European Union is by far below the envisaged levels, notwithstanding in the EU there is an increasing concern on the health impact of environmental noise on the European citizens. The European Commission is in the process of revising the legislation related to environmental noise. At present, two new legislations are proposed by the European Commission on noise from road vehicles and on noise operating restrictions at airports. Moreover, initiatives related to noise limits for railway vehicles are in place and being revised. On the top of all, the Environmental Noise Directive, which is an overarching directive aimed at a common approach towards environmental noise, is in the process of review. This article is presenting the general framework of the actions taken by the European Commission, the European Environmental Agency and the European Railway Agency on the issue of environmental noise. Also, it presents possible way forward and future perspectives of the European policy on environmental noise.; JRC.I.1-Chemical Assessment and Testing

Avaliação de ruído ambiental em zonas de conflito acústico : proposta de medidas de redução de ruído; The assessment of environmental noise on acoustic conflict zones : proposed measures to reduce noise

Mendes, Bruno Ricardo Dias Gonçalves
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Trabalho de Conclusão de Curso
Publicado em //2013 POR
Relevância na Pesquisa
66.23%
Dissertação de mestrado integrado em Engenharia Civil (área de especialização em Perfil de Construções); A exposição a ruído ambiental elevado pode causar situações de stress, interferências nas atividades básicas do ser humano como dormir, descansar ou estudar. O prolongamento da exposição pode provocar problemas de saúde graves como hipertensão e doenças cardiovasculares, surgindo como um fator que influencia na qualidade de vida das pessoas, principalmente em cidade, provocando incomodidade. Em Portugal, o ruído está regulamentado através do Regulamento Geral do Ruído (RGR), publicado no D.L. 9/2007 de 17 de Janeiro. Este diploma legal introduz, à semelhança do seu percursor D.L. 292/2000, a consideração da variável ruído urbano em sede de planeamento. Neste quadro, estabelece que a execução da política de ordenamento do território e de urbanismo deve assegurar a qualidade do ambiente sonoro, promovendo a melhoria da qualidade de vida das pessoas. De acordo com os requisitos impostos pelo Decreto-Lei nº 9/2007 relativamente ao ruído ambiente, a Câmara Municipal de Viana do Castelo encontra-se a realizar um Plano Municipal de Redução de Ruído (PMRR) de modo a estabelecer para valores legais...

Environmental noise and sleep disturbances: A threat to health?

Halperin, Demian
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
46.25%
Environmental noise, especially that caused by transportation means, is viewed as a significant cause of sleep disturbances. Poor sleep causes endocrine and metabolic measurable perturbations and is associated with a number of cardiometabolic, psychiatric and social negative outcomes both in adults and children. Nocturnal environmental noise also provokes measurable biological changes in the form of a stress response, and clearly affects sleep architecture, as well as subjective sleep quality. These sleep perturbations are similar in their nature to those observed in endogenous sleep disorders. Apart from these measurable effects and the subjective feeling of disturbed sleep, people who struggle with nocturnal environmental noise often also suffer the next day from daytime sleepiness and tiredness, annoyance, mood changes as well as decreased well-being and cognitive performance. But there is also emerging evidence that these short-term effects of environmental noise, particularly when the exposure is nocturnal, may be followed by long-term adverse cardiometabolic outcomes. Nocturnal environmental noise may be the most worrying form of noise pollution in terms of its health consequences because of its synergistic direct and indirect (through sleep disturbances acting as a mediator) influence on biological systems. Duration and quality of sleep should thus be regarded as risk factors or markers significantly influenced by the environment and possibly amenable to modification through both education and counseling as well as through measures of public health. One of the means that should be proposed is avoidance at all costs of sleep disruptions caused by environmental noise.

Electromagnetic fields and environmental noise: human health impacts in Serzedelo, Guimarães (Portugal)

Alves, J. A.; Silva, Lígia Torres; Remoaldo, Paula Cristina Almeida
Fonte: Imprensa da Universidade de Coimbra; RISCOS - Associação Portuguesa de Riscos, Prevenção e Segurança Publicador: Imprensa da Universidade de Coimbra; RISCOS - Associação Portuguesa de Riscos, Prevenção e Segurança
Tipo: Conferência ou Objeto de Conferência
Publicado em /11/2014 ENG
Relevância na Pesquisa
66.16%
The present paper investigates the risks that arise from exposure to noise from powerpoles and powerlines in Serzedelo, in the municipality of Guimarães, in Portugal. This research focused on four guiding questions: Can powerlines cause noise? Do powerlines cause discomfort? Do powerlines cause discomfort due to noise? And can powerlines effect human health? Two groups were the basis of the study: people that were exposed to electromagnetic waves and people that were not. the research pointed to the harmful influence of the presence of powerlines and high-voltage masts in residential areas and the damage to the cells in the human body. This type of environmental noise, which has the spectral content of a low frequency, typically tonal noise and a very high speed of propagation, is a complex source to explain in terms of the health profiles of the human population living in Serzedelo, located in an area that is densely occupied by high voltage powerlines and powerpole.

Impact of Colored Environmental Noise on the Extinction of a Long-Lived Stochastic Population: Role of the Allee Effect

Levine, Eitan Y.; Meerson, Baruch
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
46.28%
We study the combined impact of a colored environmental noise and demographic noise on the extinction risk of a long-lived and well-mixed isolated stochastic population which exhibits the Allee effect. The environmental noise modulates the population birth and death rates. Assuming that the Allee effect is strong, and the environmental noise is positively correlated and Gaussian, we derive a Fokker-Planck equation for the joint probability distribution of the population sizes and environmental fluctuations. In WKB approximation this equation reduces to an effective two-dimensional Hamiltonian mechanics, where the most likely path to extinction and the most likely environmental fluctuation are encoded in an instanton-like trajectory in the phase space. The mean time to extinction (MTE) is related to the mechanical action along this trajectory. We obtain new analytic results for short-correlated, long-correlated and relatively weak environmental noise. The population-size dependence of the MTE changes from exponential for weak environmental noise to no dependence for strong noise, implying a greatly increased extinction risk. The theory is readily extendable to population switches between different metastable states, and to stochastic population explosion...

Modelling the urban noise of the city of Belém (Brazil)

Moraes, Elcione; Simón, Francisco; Guimarães, Luis; Moreno, Antonio
Fonte: Sociedad Española de Acústica Publicador: Sociedad Española de Acústica
Tipo: Comunicación de congreso Formato: 223541 bytes; application/pdf
ENG
Relevância na Pesquisa
56.13%
Ponencia presentada en el XIX Congreso Internacional de Acústica (ICA2007), Madrid, 2-7 Sep 2007.-- PACS: 43.50.Rq.; Noise can be considered as a pollution source for modern societies, so great effort is currently done to its characterization and control. The key tool to manage this kind of problem is noise map. Prediction noise maps have helped to extend and facilitate the diagnosis of urban noise pollution. Reliability and accuracy of their results are very dependent on input data which in turn depend on a set of geographic and social characteristics of the city being studied. Under these conditions using a general urban noise prediction model for different cities can be a risky strategy and produce significant errors. In this work, a noise model for the city of Belém, Brasil, has been developed based on environmental noise measures carried out for a few of its districts. Then, this model has been applied to predict the noise of other districts that were not measured.; Peer reviewed

Revisão bibliográfica: o ruído urbano como um poluente ambiental; Literture review: urban noise as an environmental pollutant.

Garcia, Natasha Paltrinieri; Felisberto, Rafael Florêncio Dias; Sanches, Felipe Marquesini; Suzuki, Danilo Henrique da Silva; Bento, Ricardo Ferreira
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 21/12/2013 POR
Relevância na Pesquisa
46.23%
Purpose: Analyze studies on noise as environmental pollution in urban centers, focusing on their sources and sound levels in attempt at understand whether current urban model is suitable for individual and collective health. Material and Methods: The BVS, PubMed and Cochrane were used to search original research articles related to the environmental noise. Results: This review article analyses 19 studies related to noise as an environmental pollutant. Conclusion: many studies have been conducted to quantify the urban noise and potential disturbance caused in the population, using different methodologies. Our work demonstrates that the noise is present in the urban environment and commonly extrapolates current levels tolerated by the law, being a potential stressor. Therefore, their presence in various human activities, especially in traffic, reflects a model of the current city that needs to be rethought. The results of this study may be useful for the development of new research on the urban noise and public policy development.; Objetivo: Analisar os estudos sobre o ruído como poluição ambiental nos centros urbanos, com foco em suas fontes e os níveis sonoros na tentativa de entender se modelo urbano atual é adequado para a saúde individual e coletiva. Material e Métodos: BVS...