Search for dissertations about: "city noise"

Showing result 1 - 5 of 16 swedish dissertations containing the words city noise.

  2. 1. Prediction and Optimisation of Traffic Noise. A Study on Noise Barriers and Shielded Areas

    Author : Pontus Thorsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; city canyon; absorption; city noise; insertion loss; traffic noise; soundscape; silent side; noise barrier; ground impedance;

    Abstract : The main contribution of noise levels in cities is today road traffic. The strongest source for all road vehicles is most often the tyre-road contact. This source position close to the ground is fortunate with respect to secondary noise abatement measures, such as absorbing road surfaces or noise barriers. READ MORE

  4. 2. Road traffic noise reduction by multiple scattering and absorption mechanisms

    Author : Bart van der Aa; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Outdoor sound propagation; Sonic crystals; Road traffic noise; FDTD; Noise barriers; MST; Porous materials; 2.5D MST; Graded index sonic crystals;

    Abstract : Millions of people in Europe, and even more on a global scale, are affected by environ- mental noise. Traffic related noise is estimated to cause a yearly loss of approximately one million healthy life years in Western Europe, which is mostly related to road traffic noise. READ MORE

  5. 3. Prediction of Traffic Noise Shielding by City Street Canyons

    Author : Mikael Ögren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Reducing the sound level on the exposed building facades due to traffic noise in cities is difficult and expensive. Creating access for the inhabitants to a quiet side can be an alternative method for reducing the annoyance. Therefore it is of interest to predict the level on shielded positions such as courtyards. READ MORE

  6. 4. Individual Preferences, Choices, and Risk Perceptions - survey based evidence

    Author : Elina Lampi; Göteborgs universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; administrators; aircraft; airports; birth order; choice experiment; citizens; environmental policy; female infertility; free entrance; general risk; health care; information; media; museum; natural experiment; noise; only-child; optimistic bias; personal risk; positional concern; relative income; siblings; stated preferences; visitor composition.;

    Abstract : Paper 1 investigates how birth order and having siblings affect positional concerns in terms of success at work and of income. We find that only-children are the most positional, but that number of siblings increases the concern for their position among those who grew up together with siblings. READ MORE

  7. 5. Road Traffic Noise - Factors modifying its relation to annoyance and cardiovascular disease

    Author : Theo Bodin; Avdelningen för arbets- och miljömedicin; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Road Traffic Noise; Annoyance; Myocardial Infarction; Hypertension; Sleep;

    Abstract : Traffic noise causes annoyance and sleep disturbance and has been linked with several other adverse effects on life quality and health, including increased risk of hypertension and myocardial infarction. Conservative estimates assume that at least one million healthy life years are lost every year from traffic related noise in the western part of Europe. READ MORE