This thesis has been made in cooperation with the forestry machinery producerEco-Log in Söderhamn. The focus of the thesis has been to find a cheaper wayto open the large engine hood of the company?s harvesters. The goal was tofind a solution that could increase the value for the customers by being saferand simpler to use, or, at the least, keep these values at an equal level comparedto the previous solution.In order to make it possible to CE-mark the new solution, it was importantMachinery Directive that came into effect from the beginning of 2010.To begin with, a specification of requirements was set up. Thereafter, anumber of different basic concepts was retrieved and evaluated.

Emission of nitrogen oxides as well as carbon monoxides is an inevitable result of combustion. A Swedish law "Law of environmental fee for emissions of nitrogen oxides as a result of energy production" (lagen om miljöavgift på utsläpp av kväveoxider vid energiproduktion (SFS 1990:613)) controls the emission of NOx from energy production by a system of fees. The system has resulted in a strong approach toward less emissions of NOx among the energy production plants. High emission levels, today exceeding 52 mg/MJsupplied fuel, leads to costs for energy production companies. This paper examines possibilities to reduce the emissions of NOx by optimization of the SNCR-technique in a biofuel fired heat and power plant.

The aim of my study is to investigate how last year students in upper secondary schoolunderstand certain mathematical concepts, in particular the unit circle and its trigonometry.I have used intentional analysis to interpret student?s actions when they solve certain tasks onthe basis of a cognitive, situated and cultural context.Interviews with four university teachers in mathematics about the unit circle, trigonometry,and mathematical understanding, serve both as background for the study and as basis for adiscussion, where I relate students understanding to what the teachers want new students toknow about these concepts when they begin university studies in mathematics.The students were arranged in three groups with three students in each group. Each group waspresented with two tasks, one in which they were asked to calculate the cosine values for onepointed, one blunt and one straight angle, each located in a separate triangle. They were alsoasked to decide whether the points (0,71; 0,71) and d (1 2 , 3 2 ) are located on the unit circleor not.My conclusion is that students mainly have an operational conception of the unit circle andtrigonometry. The lack of structural conceptions result in difficulties in seeing connectionsbetween the concepts in unfamiliar situations.

The National Arts Council[1] has made an evaluation on obstacles and success factors for the interaction between culture and school. In the evaluation report they concluded that teachers and cultural workers have different views on culture and knowledge which creates confusion in their interaction. Thus I became interested to investigate teachers and cultural workers views on culture, aesthetics, and the knowledge that they think the students / children / young people should get from culture and aesthetics. This work is based on qualitative interviews with four teachers and four cultural workers. I compare their views with each other and link it to different research perspectives on culture and aesthetics in school to get an understanding of the similarities and differences in their approach, and what implications it can have in the school?s learning processes. In this work, from a didactic point of view, I found that when the teachers and cultural workers are talking about culture, the why-perspective differs.

Background: The global responsibility for multinational companies is a current matter of subject. Now when the world increasingly is getting globalized, economic growth is created, which brings a bigger demand of responsibility on companies. The leading companies from every industry is often becoming the frame for how the production process works and is therefore exposed to outer pressure which, for example, is coming from consumers and the media. Since consumers at present are more aware of what they are buying and where it comes from, it is important that the companies take social responsibility. We have therefore studied three big companies within the clothing industry to see in witch way they are taking their social responsibility.Purpose: Our purpose was to explore how companies within the clothing industry describe their work with Corporate Social Responsibility, code of conducts and where the incentive behind this work is coming from.Method: We have, through a qualitative study, examined how three large companies work with Corporate Social Responsibility.

There is little knowledge about abuse of anabolic androgenic steroids (AAS) in Sweden. Thispaper aims to explore, from a discourse psychological angle, how persons with experience ofanabolic androgenic steroids (AAS) construct there identities.The theory and method used as a frame for the paper is discursive psychology, depending on thefocus in the paper of human beings use of language in the construction of identities. Forcollection of data interviews were made. The six respondents al had experience of use of AAS.The interviews illustrated how users of AAS speak about AAS, and create there identity, inrelation to AAS. In the interpretation of data we used two different tools, used by discursivepsychologists, interpretative repertoires and subject positions.

Title: Artistic methods for persons with dysfunctions.The idea to the paper was born in my work, as a pedagogue, with young persons with dysfunctions. My pedagogic method is eurhythmics but I wanted to examine in what other ways you could work with artistic expression in similar areas such as circus, dance therapy and psychodrama. These areas were chosen because they have components that are interrelated, which I find very interesting. Mind and body are considered from a holistic point of view. The purpose of this paper is to bring about a better understanding of how persons with dysfunctions respond to various artistic teaching methods.

In this report a study has been done regarding different heating systems on which are the mostcomprehensive with solar heating systems. The report has also been focusing if solar power can beused as a primary heating source for supplying more than 50 % of the buildings total heatingproduction. The University of Dalarna constructed a demo-house for this purpose and according tocalculations the total solar usage is more than 50 %. This house has been made for referenceregarding the design of the heating system of property 5:37.Further studies have been made to compare different heating systems that are compatible with asolar system, where the compared systems purpose is to be independent of direct using electricity. Asystem of this design is regarded as sustainable according to environmental as economic issues.

This thesis work has been performed at Volvo Aero Corporation in Trollhättan, at the department of ?hot structures? involving aircraft engine GP7000. The purpose with the study was to investigate the possibility to reduce size of the forging of flanges on the rear turbine frame when purchasing. Thereto examine the parameters that affect the flanges motion during the manufacturing process. The goal was to provide Volvo Aero with foundation to later bring in slimmed forgings.

In today´s forestry, assessments of needs for thinning are based on basal area measurements. This is an indirect measurement. The approach and the developed assessment tables are based on an assumed production forest, which implies that management proposals in stands that deviate from the basic model may be misleading. Since Walter Bitterlich in 1948 launched the idea of the relascope, several modifications have been developed for different purposes. In common is that all are based on a certain angle measurement principle.

The harness racing industry has roots hundreds of years back in time and breeders through time have changed the horses to a mix of potential, harmony and speed. Breeding has changed the conditions and created a horse that perform better and better. A risk with high-performance horses is that injuries related to training and racing may occur more often. In training and racing situations, lameness is the most common injury. There are many factors affecting the occurrence of injuries and lameness of the trotter horses, such as how the horse is trained and raced, the surface condition of the racetrack, banking and angle of the curves of the racetrack and how fast injuries are discovered and treated.

This master thesis is commissioned by Permobil AB. The report describes thoroughly the developing process of an adjustable backrest for wheelchairs. The target group for the backrest are people that suffer from scoliosis or other spinal diseases. Because of insufficient pressure distribution usage of traditional backrests is not an option for them.The current solution has got a frame that is made by several adjustable links that is held in place by friction. Between the links velcro tapes are attached that is adjusts the depth.

This bachelor essay is divided into two parts, the first being a construction of a single-familyhouse and the second an in-depth study of five different isolation materials, analysed from anenergy perspective.The first part, the construction of the single-family house, has been created from knowledgeacquired during three years of studying at KTH Royal institute of Technology in Stockholm, inthe program Architecture and the Built Environment. The constructed house is a one-floorhouse of 137m2with façade plaster, situated in Borlänge, Sweden. The house has a wooden framewhich is built on a on sight cast concrete foundation, on the ground. The house?s roof is a gableroof, which has an angle of 24 degrees.

The primary function of a mixer is to keep a fluid in constant motion. All mixing applicationsrequire varying degrees of small-scale turbulence and bulk flow. The performance of asubmersible mixer is measured by the thrust that it produces, while the strength of the bulkflow is dependent on the total amount of installed thrust.In a mixer, the fluid quickly flows past the propeller, and as a result, the current is mainlyaxial. The fluid will also obtain a rotating velocity, or a swirl, though this is significantly lessthan that of the propeller. During the process, the total amount of energy increases in the formof static pressure and kinetic energy.

Det här kandidatarbetet kommer framförallt att beröra filmtekniken, Matte Painting, men vi kommer även röra oss runt omkring ämnet och presentera andra delar från filmproduktionen och framförallt postproduktionen för att lättare kunna sätta Matte Painting i ett relevant sammanhang. Vi jämför Matte Painting med en teaterkuliss, en bakgrund som på nära håll eller ses från fel vinkel kan bryta illusionen av att det är en verklig miljö. Vi undersöker och presenterar hur man kan bygga upp en digitalt skapad Matte Painting som möjliggör att inte behöva åka land och rike runt efter den idealiska filmplatsen, utan kan spela in filmscenen i en studiomiljö. Vi analyserar existerande filmscener som har använt sig av Matte Painting, gör jämförelser mellan olika användningsområden för Matte Painting samt diskuterar fram en slutsats som besvarar vår frågeställning: ?Hur har utvecklingen av filmtekniken, Matte Painting, sett ut och hur kan man tillämpa en digital Matte Paint i postproduktion för att förstärka helhetsupplevelsen av en filmscen?? --- This thesis will primarily concern the film technique, Matte Painting, but we will also roam around the subject and introduce other elements of the film production, and above all post production for ease of putting Matte Painting in a relevant context.