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581 Uppsatser om Noise Exposure - Sida 17 av 39
MÄTNING AV LJUDIMMISSION FRÅN VINDKRAFT. VIDAREUTVECKLING AV METOD FÖR MÄTNING
The Swedish government have a goal that wind turbines shall produce 30 TWh by the year 2020, compared to about 3,5 TWh produced in Sweden during 2010. To minimize the disturbance that wind turbines create the Swedish Environmental Protection Agency has stated a guideline value that noise from wind turbines at nearby residents shouldn?t exceed 40 dBA, at 8 m/s wind speed. With advanced calculation models, like Nord 2000, the emitted sound from future wind turbines can be calculated at an early stage to optimize the power production without exceeding the 40 dBA. When the turbines have been built there is a need to verify that they really are within the guideline.
Vindskador vid stickväg i 1:a och 2:a gallring i Boxholm, Östergötland : i stormen Pers fotspår
Wind damages next to strip roads in 1st and 2nd thinning in Boxholm, Östergötland
Anneli Fransson, SLU, inst f sydsvensk skogsvetenskap, Examensarbete no 108
Wind damage is something we are all familiar with since the storms Gudrun (2005) and Per (2007). Research about strip roads and wind damage is very limited. It is commonly known that the trees next to the strip roads more often fall whit heavy winds, and the purpose of this thesis was to verify this statement. Data was collected from first- and second thinnings at Boxholms Skogar AB, Östergötland. In first thinnings data was collected from both spruce and pine stands and second thinnings only data from spruce stands was collected.
Långa skuggor med shadow maps
Skuggor i 3D-miljöer är ett mycket efterforskat område, och detta arbete koncentrerar sig på shadow map-algoritmen. Det finns ett problem med denna algoritm, för då en shadow map projiceras på en yta som är större än sig själv så bildas stora trappstegseffekter, vilket kallas aliasing. Problemet som har undersökts är hur olika shadow map-algoritmer i en miljö med långa skuggor beter sig, där ett minimerat antal artefakter så som brus och aliasing är synligt. För detta undersöktes Percentage-Closer Filtering (PCF), som är en variant av shadow map, med olika samplingstekniker ? och även en vidarebyggnad med Percentage-Closer Soft Shadow (PCSS) implementerades.
Biogasinvesteringar i Linköping : samhällsekonomiskt lönsamt eller inte?
Since some years Linköping has invested in biogas production, mainly from offal's, residuals from food industry and manure. The municipality goes for biogas in the local traffic and in all transportation. It is also possible for private car owners to run their cars on biogas.
The purpose of this essay is to perform a cost-benefit analysis and examine if the project has been beneficial from a social point of view. The effects have been identified, measured and monetarily valued. The essay is limited to include the year of 2006 only.
Eldsjälar, svartfötter och byråkrater : En undersökning av konflikten kring Tensta Konsthall
The purpose of this essay was to overview the conflicts regarding the exhibition space (Kunsthalle) Tensta Konsthall during 2003 and 2004, in order to gain an understanding of the following: why the conflict started, if anyone exceeded their authority, how the case has been reviewed in the press, what kind of value judgements lay behind the actions and why this case has received so much attention. By studying mainly press material and political documents it has been made clear that Tensta Konsthall?s location in an ill reputed suburb of Stockholm has been the cause for its exposure to different demands and expectations compared to other similar exhibition spaces. Further the essay deals with questions raised by the conflict in the intersection of culture and politics..
Passive acoustic diver detection
This report discusses a method to detect divers in harbour environments usingpassive acoustic detection. The goal was to achieve as high detection as possiblewithout having too high false alarm rate. A short execution time was also desirable.By using the characteristic of an inhalation a band-pass filter was applied to the signalto improve the signal to noise ratio. After the filtering an energy estimation of thesignal was made. This energy estimation was later used in a frequency analysis, whichcould tell us if there were enough energy in the frequencies that correspond to adivers breathing frequency.
Psykosocial arbetsmiljö : kommunikation och trivsel i industriella arbetslag
Relationships and trust between humans create the psychosocial working environment. This is a basic human activity and is communicated in a continually ongoing process. Conciseness about the value of trust and social capital motivates the need for work, with threats to communication, being conflicts and noise. This can create greater trust in the workplace as a whole, as well in the working team. Scientists are increasingly interested in these social relations in the working environment; there are profits, both for production and in terms of individuals2019 well being, in shifting the focus away from a purely production-oriented, economic perspective.
En normativ dröm om en lokal hjälte : En kritisk diskursanalys av "UNICEF Annual Report 2013"
We live in a world where the resources are not equally divided and that is why charity work is needed. The United Nations Children?s Fund, UNICEF, is a global organization that works for children?s human rights around the world. But perhaps even charity work, which´s often glorified in the society, need to be looked at from different directions. Research about intercultural education, globalization and charity shows that even good deeds can end up reproducing the problem that was supposed to be solved in the first place.
Public Hear Aid
This project started when LIC Audio AB wanted help with development of a hearing aid for public rooms. The problem is that a lot of people suffer from some sort of hearing impairment. In places with a lot of people and background noise the problem becomes bigger and the sound seems to flow together. During the project we found the solution for the problem in the shape of a headphone. The headphone receives a signal from a preinstalled hearing loop.
Hästens, Equus caballus, termiska komfort - hur kan djurskyddskontrollanter bedöma hästens välfärd?
This review paper summaries scientific research about horse thermoregulation and the consequences of using a blanket. Horse owners put blankets on their horses to protect them when they are clipped, to protect them from bugs, to keep them clean and so on. This can have consequences for the horse which their owners might be unaware of. I have tried to answer following questions by searching the available scientific literature;
? How can the horse maintain thermoregulation?
? Is there a risk of suffering when horses wear a blanket?
? Is there a risk of suffering when horses do not wear a blanket?
? How can animal inspectors estimate the welfare of horses when they wear or do not wear a blanket?
My result shows that horses who wear a blanket have an increased risk of becoming overheated, develop a chafing, have an increased exposure hazard and have a restrained natural behaviour.
Utflaggning och omstrukturering. : Sju verksamheter på sjöfartsintensiva Åland berättar om sina upplevelser.
This paper concerns the flagging out of merchant navy vessels and its consequenses. Flaggingout is method used by ship owners in order to gain advantages. Under a different flag, thevessel's legal residence become the subject of another country´s laws. Toward the end of thefirst decade of the 20th century ferry -and passangervessels trading in the Baltic Sea wereflagged out from Åland to the flag of Sweden. Flagging out to Sweden is not common but thespecific circumstances for this trade has made the Swedish ship's register interesting for shipowners.
Processuell generering av oändliga spelvärldar : Praktiska problem och optimering
Enligt oss så är det största problemet med att processuellt generera en pseudo-oändlig spelvärld i realtid är att få genereringen att ske så sömlöst som möjligt samtidigt som världen upplevs som konsekvent. För att finna lösningar på detta problem så analyserar vi andra studier och spel som utnyttjar processuell generering. Vi använder sedan de metoder och tekniker vi funnit för skapandet av en egen applikation för att få en djupare förståelse för hur dessa fungerar i praktiken och hur mycket varje metod påverkar prestandan. I vår slutsats beskriver vi de problem vi fann, deras orsak och ger förslag på lösningar. På grund av studiens tekniska karaktär så riktar den sig främst till programmerare.
Miljöteknisk undersökning enligt MIFO : en studie på fastigheten Bodsjölandet 1:14 avseende den nedlagda tjärfabriken i Grötingen
During 40 years of industrial production, from the end of the 1890?s until the end of 1930?s, coal and wood distillation products were manufactured in AB Carbo?s tar factory along the River Gimån in Grötingen, in the county of Jämtland, Sweden. In accordance with the Swedish Environmental Protection Agency?s Methods for Inventories of contaminated sites, MIFO, the site in Grötingen has been identified as a potentially contaminated site. In order to determine whether toxic substances pose a threat to human health and ecological systems in the area, there was a need to investigate the presence of contaminants, their levels and potential for migration.
Avblås för torkning av kabel
This report is written on the assignment by Nexans IKO Sweden AB in Grimsås which is a cable manufacturing company. Nexans IKO Sweden AB was in need of help to examine possibilities for saving energy by saving compressed air, in first place by using the compressed air more efficient. The task was to determine the present situation, making the airwipe stations more efficient by reducing the consumption of the compressed air and in turn save money. Even the aspects of the working environment were discussed as the noise levels from the pneumatic systems and engines are usually high. A schedule over the airflow in the factory and the inventory over current airwipessituation was made.
Biblioteksanvändares möte med exponerad litteratur: En enkätundersökning av användares upplevelse av exponering.
The purpose of this thesis is to examine library users experience encountering exposed literature. Shops and stores expose the products they most of all want to sell, a kind of marketing strategy that influences our inclination to buy. By conducting a quantitative study, at two minor public libraries, and using theories from the marketing area this thesis intended to investigate the subject further. Eighty library visitors, between age 10 and XX filled out a questionnaire asking how the users experience or register exposed literature and what makes users borrow or not borrow exposed literature. The respondents find exposed literature helpful in directing them to new interesting suggestions of books they otherwise wouldn?t have borrowed.