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Visar resultat 16 - 20 av 43 avhandlingar som matchar ovanstående sökkriterier.
16. Final Approach : Measurements and Ratings of Aircraft Landing Noise
Sammanfattning : Följande avregleringen av flygmarknaden har flygtrafiken ökat snabbt sedan mitten av 1990-talet. Detta har oundvikligen lett till en utbyggnad av flygplatser, vilket på många platser runt om i världen har lett till oro och konflikter på grund av ökade bullernivåer. LÄS MER
17. Applied Speech Enhancement for Personal Communication
Sammanfattning : In our daily life noise is almost constantly present. At the same time our need to communicate reliably has probably never been this great. Surrounding noise impairs our ability to communicate by speech and causes the users of a speech communication system to strain both their hearing and their voices. LÄS MER
18. Railway Open System Tribology
Sammanfattning : Tribology in the railway system is of increasing interest in the new railway era due to the demand for higher speed and load capacity. Since railway vehicles operate in an open environment, their performance depends greatly on temperature, humidity and natural and artificial contaminants. LÄS MER
19. Friluftslivkonflikter i svenska kustlandskap ur ett planerings- och användarperspektiv : Studier av Luleå och Blekinge skärgårdar
Sammanfattning : Hav och kust har alltid varit viktiga för oss människor. I svenska kustlandskap har boende, infrastruktur och fiskenäring existerat sedan lång tid tillbaka samtidigt som områdena också varit viktiga för nöje och rekreation. LÄS MER
20. Noise in the preschool : health and preventive measures
Sammanfattning : This thesis is based on noise recordings and health evaluations carried out at preschools in the northern part of Sweden. Sound level recordings were made on individuals and by use of stationary devices in dining rooms and play halls. Health evaluations were based on ratings by use of questionnaires and by analyses of cortisol. LÄS MER