Search for dissertations about: "noise"

Showing result 1 - 5 of 1586 swedish dissertations containing the word noise.

  1. 1. Gearbox noise Correlation with transmission error and influence of bearing preload

    University dissertation from Stockholm : KTH

    Author : Mats Åkerblom; KTH.; [2008]
    Keywords : gear; gearbox; noise; vibration; transmission error; bearing preload; TECHNOLOGY Other technology Mechanical engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Maskinteknik;

    Abstract : The five appended papers all deal with gearbox noise and vibration. The first paper presents a review of previously published literature on gearbox noise and vibration.The second paper describes a test rig that was specially designed and built for noise testing of gears. READ MORE

  2. 2. Human response to wind turbine noise perception, annoyance and moderating factors

    University dissertation from Göteborg : Occupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of Medicine, The Sahlgrenska Academy, Göteborg University

    Author : Eja Pedersen; Högskolan i Halmstad.; Göteborgs universitet.; Gothenburg University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURAL SCIENCES; NATURVETENSKAP; Noise; Environmental exposure; Wind; Audio-visual interaction; Low-level noise exposure; wind turbines; noise annoyance; sound perception; audio-visual interaction; low-level noise exposure;

    Abstract : Aims: The aims of this thesis were to describe and gain an understanding of how people who live in the vicinity of wind turbines are affected by wind turbine noise, and how individual, situational and visual factors, as well as sound properties, moderate the response.Methods: A cross-sectional study was carried out in a flat, mainly rural area in Sweden, with the objective to estimate the prevalence of noise annoyance and to examine the dose-response relationship between A-weighted sound pressure levels (SPLs) and perception of and annoyance with wind turbine noise. READ MORE

  3. 3. Environmental Impact from Wave Energy Converters : Underwater Noise

    University dissertation from Uppsala : Institutionen för teknikvetenskaper, Uppsala universitet

    Author : Kalle Haikonen; Uppsala universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Wave energy conversion is a potentially clean and sustainable form ofenergy conversion with no emissions of gases or liquids during operation.There are other environmental issues that need to be taken in consideration.The deployment of a wave power farm will contribute with new surface formarine organisms to colonize. READ MORE

  4. 4. Classroom noise exposure and subjective response among pupils

    University dissertation from Umeå : Umeå Universitet

    Author : Pär Lundquist; Umeå universitet.; [2003]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; school; teaching; students; annoyance children; sound; mood;

    Abstract : In Sweden, all children must have access to education of equal value and the curriculum points out the importance of a good environment for development and learning. Modern working methods differ a lot from the traditional. Teaching nowadays is focused on problem-solving. Students are more interactive, working in groups and projects. READ MORE

  5. 5. Noise in the school environment Memory and Annoyance

    University dissertation from Stockholm : Byggvetenskap

    Author : Eva Boman; Högskolan i Gävle.; KTH.; [2004]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Noise; meaningful irrelevant speech; road traffic noise; memory; age group; school environment; pupils; teachers;

    Abstract : Objectives.The general objectives of this dissertationwere to examine the effects of acute exposure to meaningfulirrelevant speech and road traffic noise on memory performance,and to explore annoyance responses to noise exposure in theschool environment for pupils and teachers in different agegroups.Methods. READ MORE