Health Impairments, Annoyance and Learning Disorders Caused by Aircraft Noise-Synopsis of the State of Current Noise Research

2016 ◽  
pp. 15-46 ◽  
Author(s):  
Martin Kaltenbach ◽  
◽  
Christian Maschke ◽  
Franziska Heß ◽  
Hildegard Niemann ◽  
...  
Keyword(s):  
Learning Disorders ◽  
Aircraft Noise ◽  
The State ◽  
Current Noise ◽  
Health Impairments

Evidence based legislation? Adequate protection of EU citizens against aircraft noise – Discussion of current scientific knowledge on aircraft noise with respect to EU legislation concerning noise protection

elni Review ◽  
2016 ◽  
pp. 26-32
Author(s):  
Franziska Heß ◽  
Martin Führ
Keyword(s):  
Large Scale ◽  
Noise Exposure ◽  
Epidemiological Studies ◽  
Learning Disorders ◽  
Aircraft Noise ◽  
Myocardial Infarctions ◽  
Limit Values ◽  
Legal Implications ◽  
The Relationship ◽  
Health Impairments

This article focuses on air noise protection in European law. The consideration of legal implications is based on a meta study (synopsis) of scientific research on aircraft noise-induced health impairments, annoyance and learning disorders. The synopsis concludes that the association of noise with an increased incidence of chronic arterial hypertension has been shown in large-scale epidemiological studies and reproduced with sophisticated methodology. It is therefore considered scientifically confirmed. In addition to hypertension, the relationship between aircraft noise and the risk of myocardial infarctions as well as strokes has been discussed. Based on recent epidemiological studies the relationship can also be considered scientifically confirmed. However, with regard to heart failure an association is very likely, but not enough studies are available to allow a definite statement. By reviewing the current studies, the authors held that legally standardized immission limit values for aircraft noise exposure must be provided in order to protect residents in the vicinity of airports. From the available studies an upper limit of 50 dB(A) for Lden as a 24 h value and 45 dB(A) for Lnight are to be derived to avoid annoyance, cognitive constrictions and health impairments. To avoid sleeping disorder at night, an 8 hour period without noise is required.

scholarly journals Impact of Aircraft Noise on Communities Near Belgrade Airport

2021 ◽  
Vol 33 (3) ◽  
pp. 323-335
Author(s):  
Emir Ganić ◽  
Jurica Ivošević ◽  
Bojana Mirković
Keyword(s):  
Background Noise ◽  
Aircraft Noise ◽  
Current Noise ◽  
Noise Levels ◽  
Short Term ◽  
Noise Abatement ◽  
Compatibility Analysis ◽  
Noise Measurements ◽  
Continuous Noise ◽  
The Impact

The aim of this research was to examine the impact of aircraft noise on communities near the Belgrade Airport by conducting short-term noise measurements. Apart from the noise abatement procedure published in the Aeronautical Information Publication for Belgrade Airport, there are still neither publicly available reports of the actual efforts made towards the aircraft noise reduction nor the description of the current noise situation. In order to estimate the current noise situation, eighteen aircraft overflight noise measurements were taken in two settlements in specific sound-sensitive community areas around the Belgrade Airport. The results showed that level differences between background noise and aircraft overflights were higher than 10 dB for each measurement and could be considered significant. Furthermore, preliminary compatibility analysis with acoustic zoning was performed. Average daily noise levels were estimated from these short-term measurements and were compared to legal noise limits for different acoustic zones. The results indicate that in some cases noise levels exceed the legal threshold, which should encourage land use planners to include the issue of Belgrade acoustic zoning on the agenda, but also prompt Belgrade Airport to implement continuous noise and flight tracks monitoring.

Erfahrungen bei der Ermittlung und Bewertung des Standes der Lärmminderungstechnik

2019 ◽  
Vol 14 (04) ◽  
pp. 115-122
Author(s):  
J. Bittner ◽  
S. Heim ◽  
D. Hinkelmann ◽  
G. Hünnekens
Keyword(s):  
Noise Control ◽  
The State ◽  
Current Noise ◽  
Control Technology ◽  
Sound Sources ◽  
Industrial Sites ◽  
The Individual ◽  
Intermediate Value

Im Zuge der Bewertungen zum Stand der Lärmminderungstechnik sind sowohl detaillierte Untersuchungen an den einzelnen Schallquellen als auch die Messung und Berechnung der vorhandenen Geräuschimmissionsbeiträge nötig. Wird die Untersuchung nach vorstehend beschriebener Methodik vollzogen, kann eine abschließende Prüfung erfolgen, da sowohl die derzeitige Geräuschsituation im Umfeld einer Anlage bekannt ist, als auch Kenntnisse darüber erlangt werden, mit welchem Aufwand ggf. zusätzliche Minderungen der Geräuschsituation erreicht werden können. Wesentlich ist dabei die Bewertung der Verhältnismäßigkeit. Wird zudem ein geeignetes Abschneidekriterium gewählt, ist der entstehende Aufwand selbst bei großen Industriestandorten noch vertretbar, um den sachgerechten Zwischenwert zu ermitteln.   Summary In the course of the assessments on the state of noise control technology, both detailed investigations of the individual sound sources and the measurement and calculation of the existing noise contributions are necessary. If the investigation is carried out in accordance with the method described below, a final check can be made, since both the current noise situation in the vicinity of a plant is known, and knowledge is obtained as to the effort with which any additional reductions in the noise situation can be achieved. What is important here is the assessment of proportionality. If, in addition, a suitable cut-off criterion is chosen, the resulting effort can still be justified, even in case of large industrial sites, in order to determine the appropriate intermediate value.

scholarly journals Advantages and Limits of Remote Care and Stress Management Experienced by Mothers of Students with Specific Learning Disabilities During the Covid-19 Period

2022 ◽  
Vol 16 ◽  
pp. 64-72
Author(s):  
Zhour Leqouider ◽  
Zakaria Abidli ◽  
Bahae Ouali ◽  
Latifa Kamal ◽  
Joumana El Turk ◽  
...  
Keyword(s):  
Learning Disabilities ◽  
Odds Ratio ◽  
Learning Disorders ◽  
The State ◽  
Psychological State ◽  
P Value ◽  
Cross Sectional ◽  
Technical Problems ◽  
State Of Stress ◽  
Remote Care

These instructions give you guidelines for preparing papers. Use this document as a template if you are using Microsoft Word. Otherwise, use this document as an instruction set.. Define all symbols used in the abstract. Do not cite references in the abstract. Do not delete the blank line immediately above the abstract; it sets the footnote at the bottom of this column. Page margins are 1,78 cm top and down; 1,65 cm left and right. Each column width is 8,89 cm and the separation between the columns is 0,51 cm. Abstract-Introduction : The period of confinement due to the COVID-19 pandemic has harmful consequences on the psychological state of parents and their children, especially those with psychological or neurocognitive problems. The care of these children plays a primordial role in their development, particularly during the COVID-19 period. For this reason, our objective is to assess the state of stress among mothers of children with learning disabilities during the COVID-19 period in Morocco, as well as the support of these children. Materials and methods : This is a cross-sectional study that was conducted during the period from April to June 2020. To realise it, we used a investigation form which contains three parts. To evaluate the state of stress in mothers, we used the "PSS10d" scale adapted to the Moroccan context. The target population is composed of mothers of children with learning disabilities who are being monitored by Moroccan Association for Learning Disorders and Difficulties (MALDD) in Casablanca. Results : During the period of confinement, only 13% (n=15) of mothers reported that their children "Dys" had benefited from remote remediation by specialists According to the Odds Ratio calculation, the risk factors influencing the care of "Dys" children during this period of confinement are: lack of cooperation from the child (Odds Ratio= 16.8; IC95%=[3.5-79]). 1]; P-value=0.001), the educational level of mothers (Odds Ratio= 9.4; IC95%=[2.4-35.7]; P-value=0.001), the economic situation (Odds Ratio= 5.1; IC95%=[1.5-17.4]; P-value=0.01) and technical problems (Odds Ratio= 5.1; IC95%=[1.5-17.4]; P-value=0.01). Conclusion : According to our results, we noticed that the psychological state of the mothers is influenced by the remote care of the "Dys" children. For this the responsible authorities in Morocco must support this population.

scholarly journals Atmospheric Ray Tracing: An efficient, open-source framework for finding eigenrays in a stratified, moving medium

Acta Acustica ◽  
2021 ◽  
Vol 5 ◽  
pp. 26
Author(s):  
Philipp Schäfer ◽  
Michael Vorländer
Keyword(s):  
Performance Analysis ◽  
Open Source ◽  
Real Time ◽  
Ray Tracing ◽  
Efficient Method ◽  
State Of The Art ◽  
Aircraft Noise ◽  
The State ◽  
Moving Medium ◽  
Open Source Framework

In this paper, an open-source framework for ray tracing in a stratified moving medium is introduced. This framework provides an efficient method to find eigen-rays connecting a source with a receiver and is designed for the purpose of aircraft noise auralization. The method is tested with respect to accuracy and run-time in an aircraft flyover scenario and compared to a state of the art method. The investigation showed that this method provides eigenrays with preset accuracy for source positions most relevant for flyover scenarios and that it is significantly faster than the state of the art method. According to the performance analysis, the presented approach has great potential for integration into future real-time auralizations of aircraft noise.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

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