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561 Uppsatser om Sound emission - Sida 23 av 38

Undersökning av elkvalitet i distributionsnät med omfattande vindkraftselproduktion

The goal for this master thesis project has been to investigate the power quality in adistribution grid, which has a high fraction of dispersed power production due towindmills. The study has been done on a grid in Laholm South of Halmstad, whereapproximately 45 windmills are connected to the distribution grid owned by SHKEnergi. The investigation has been focused on to two radialy fed 20 kV lines, wheretwelve windmills are connected.Voltage variations have been studied by creating a model of the grid in the simulationprogram SIMPOW. The largest deviation that has been found in any point of the gridis ±1.9 % of the nominal voltage. This deviation is a result of varying powergeneration from the windmills and the voltage regulation at the connection point ofthe line.

Grön olja? - En fallstudie av ett oljebolags miljöprofilering

While the call for regulations against greenhouse gas emissions are louder then ever before, demand for oil is also at an all time high. Oil companies face the dilemma of making sound business without being perceived as environmental villains. In this essay I will examine how BP, one of the largest companies in the world, broke rank with the industry and devoted itself to being an environmental friendly oil company. The actions and motives of this change will be evaluated through up-to-date theories about company motivation to environmental adaptation. We see that BP:s transformation can be well explained through Simone Pulvers theory about the socially embedded company.

Instruktionsfilm på smartphones : En studie kring upplevelsen av video via smartphones som inlärningsverktyg för praktiska färdigheter

This study examined how users interact with a smartphone while in a learning situation based on videos via smartphones as a learning tool, and how this interaction and phenomena is experienced. The five test subject were separately given the same task that they were to solve using video instructions that were picked out and given to them. After finishing the task the subjects were observed while they demonstrated how they completed the task. After the observation the subject were interviewed using semi-structured interviews. The results show that the user experience of this phenomena is based on more pragmatic values than we could find in earlier studies, i.e.

Ungdomars ljudupplevelser i vardagsmiljön

Noise is a growing health problem. People are not always aware of the injuries that noise can cause. The media culture of today has a big influence on teenagers. This is caused by portable music players, computers, concerts etc. The schools are having larg classes and that can cause a lot irrelevant speech during lessons.

Skapa kreativa möten : En visuell gestaltning av situationer och funktioner runt ett community table.

This work is a study in how I as a designer can create the conditions for people to work, socializing and refreshments at one place. A place that encourages creativity, where I made a suggestion at a community table designed for Urban Deli?s new business. By visiting various similar sites I have identified what I think is important in an environment like this and then gave an answer to it in a visual form.A cafe-office will draw lots of different people. Which guests come here to work? Residents, freelancers, but also those who may want surrounded by a new creative work place and maybe leave their regular offices for a day at Urban Deli.

Grundsärskolan- en skolform i tiden? : Grundsärskolans personals uppfattning om uppdrag, synsätt och attityder

The Swedish government ratified on May 1 2009 an amendment of marital law, resulting in same-sex marriage becoming legalized. With the rights of the Christian Swedish state church to officiate weddings originating from the same law, the church was thereby faced with two options: Either officially include same-sex couples in the Christian concept of holy matrimony and keep the right to officiate weddings; or give up the right to officiate weddings altogether. An official decision to accept the terms was reached on October 22 2009, but not without being preceded by an agitated medial debate.This research attempts to analyze the arguments of the debate in three stages: In the first stage the arguments are categorized according to their respective ideological standpoint. In the second stage these categories are examined from post-modern, social constructivist and socialization theory perspectives. Based on this, the third stage sees the arguments analyzed from a viewpoint based in the Copenhagen school concept of securization.The research concludes that the debate does not only simply feature two sides with differences of opinion; but rather that the arguments of the two opposing sides are founded in a common view of the other side as a fundamental threat to ones conception of a sound society..

Bullerreduktion av hytt på Volvodumprar : Undersökning, mätning och analys

Too high levels of noise lead to various health problems and cost society billions of SEK peryear. In this thesis we have examined a model of the A40E articulated hauler at VolvoConstruction Equipment in Braås. We have tried to reduce cabin noise in an articulated hauler,while also providing a way on how to proceed with a machine when the cabin does not measureup to the sound requirement. The best way to find leaks were with a reference source of model4205 and its speaker HP 1001 from Brüel & Kjaer in the cab and then walk around and listen towhere the reference source was more prominent. In this way, we found that the edges and theplugs were sensitive areas.

ISO14001:2004 : ett humanekologiskt verktyg?

ISO14001:2004 : A Human Ecological Tool?This is a study by means of litterature analysis and personal experience to find out wheather you could call ISO14001:2004 a Human Ecological tool. The ISO14001 is an environmental management system. I'm approaching the issue from a users' perspective and putting my experience of implementing the ISO 9001 at my work to good use. Though my personal experience is limited to the implementation of the ISO 9001, it is quite relevant to the task since the update of 2004 the ISO14001:2004 is brought closer to the ISO 9001 standard in many ways.

COP15 - Jakten efter ett ambitiöst och globalt klimatavtal. -Vad motiverar Danmark att verka för ambitiösa bindande klimatmål?

Until recently the Danish government was hesitant about whether investments in climate and energy policies were the right strategy for Denmark. Today the Danish government argues that during the forthcoming climate conference in Copenhagen in 2009 (COP15), the world's countries must agree upon ambitious climate objectives. Denmark is together with EU-27 aiming at an ambitious climate agreement. This thesis intends to contribute with an understanding of why Denmark, both politically and economically, invests profound resources into committing the world's countries to a climate agreement. The study uses both a neoliberal institutionalism and a constructivist theory in analyzing the Danish engagement.

Vad är det som gör en låt "bra" och vilken roll spelar budskap och text i musik för tonåringar idag? En studie kring elevers tankar om musik och text

Denna studie är gjord för att undersöka ungdomars tankar kring musik och text, och då med utgångspunkt från forskningsfrågan: Vad är det som gör en låt "bra" och vilken roll spelar budskap och text i musik för tonåringar idag? Studien grundar sig i ett intresse för budskap i musik och funderingar kring huruvida detta budskap når fram till dagens tonåring. All musik förmedlar något men hur uppfattar mottagaren det? Handlar en bra låt endast om musik? Spelar texten den viktigaste rollen i sammanhanget eller är helheten det som tilltalar? Påverkas tonåringarna av musiken och det eventuella budskapet, eller är det något man inte alls bryr sig om? Under tre gruppsamtal med elever från årskurs 7-9 lät jag elever lyssna på låtar och läsa låtens text samt fritt reflektera kring detta. Slutsatsen man utifrån dessa samtal kan dra, är att musiken är det man först möter och således det som avgör hur låten tas emot, samt det som avgör om man är intresserad av att lyssna vidare.

"Real, truthful radio" : en formanalys av ?direktreflekterande? radioprogram.

This essay aims to analyse the form of two radio documentary shows and compare them to, what I mean are a traditional, Swedish radio documentary form. The radio shows are Radiolab distributedby National Public Radio and WNYC, Övernaturligt (supernatural) produced by TredjeStatsmakten Media AB and P3 Dokumentär (P3 Documentary) distributed by Sveriges Radio. Alarge part of the essay is dedicated to develop a method to analyse form in specific radio shows. Mymethod consists of two parts:1. A defining of sounds in a spreadsheet that map out the different sound elements over time.2.

Värmning av avloppsvatten med spillvärme för att förbättra kvävereningen -Temperaturens inverkan på kvävereningen

The goal for this master thesis project has been to investigate the power quality in adistribution grid, which has a high fraction of dispersed power production due towindmills. The study has been done on a grid in Laholm South of Halmstad, whereapproximately 45 windmills are connected to the distribution grid owned by SHKEnergi. The investigation has been focused on to two radialy fed 20 kV lines, wheretwelve windmills are connected.Voltage variations have been studied by creating a model of the grid in the simulationprogram SIMPOW. The largest deviation that has been found in any point of the gridis ±1.9 % of the nominal voltage. This deviation is a result of varying powergeneration from the windmills and the voltage regulation at the connection point ofthe line.

Jämförelse mellan sojaböna och åkerböna som proteinfoder till växande grisar

The soybean can be used in multiple ways, and its high oil content makes it suitable for extraction. Soy bean meal, a by-product of the oil extraction, is a good source of protein with a high feeding value, and is therefore used in a number of different animal feeds. Further, soy bean meal has a low production price, which is one of the reasons for the extensive export of the product. There is a great demand for vegetable-based proteins, especially in the organic production where synthetic amino acids are banned. However, the current production of soy beans is not environmentally sound and that combined with the long transport distances amplifies the need of finding a locally produced protein source.

Vem köper KlimatEl och varför? : Kvantitativ undersökning av Kalmar Energis elhandelskunder

Private individuals can voluntarily buy EU Allowances (EUA) in order to remove them from the European Union Greenhouse Gas Emission Trading System (EU ETS). It leads to progressive reduction of total carbon dioxide emissions in Europe. Kalmar Energi offers customers to obtain one EUA (equivalent to one ton of CO2) per year by paying 25 SEK a month as a KlimatEl-supplement. The purpose of this research is to examine the customers? attitudes in the issue of climate compensation and trying to define the reasons behind their choices.The results of the quantitative questionnaire were analyzed by using descriptive and analytical statistical methods and have shown some correlation between customers? ages and decisions to accept or not the offer of KlimatEl.

The effect of additional nitrate and sulfur in the diet on the methane production in cattle

A growing population together with a change in food habits to a more diverse diet containing more animal products such as meat and milk makes the possibility to produce and sell products of cattle a growing market. And at the same time there is an ongoing debate about global warming, where raising cattle is questioned due to their high production of enteric methane. To be able to raise animals in a more environmental friendly way and at the same time improve productivity in a developing country such as Vietnam would be favorable. The use of feed additives with high electron affinity could decrease the methane production and at the same time improve the gross energy digested. Nitrate and Sulfur are both good electron acceptors, but due to its toxic effects the use of nitrate in feed has been neglected.

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