Målet med detta examensarbete, utfört på uppdrag av Vectura Consulting AB, har varit att undersöka möjligheten att ansluta en vindkraftpark till järnvägens kontaktledningsnät. Möjligheten att koppla om vindkraftparken till järnvägens hjälpkraftnät, som bland annat förser växelvärmare och signalsystem med effekt, har också undersökts. Eftersom kontaktledningsnätet och hjälpkraftnätet arbetar med olika frekvenser och spänningar, 16? Hz och 15 kV respektive 50 Hz och 22 kV, måste därför en komplett krets för frekvensomvandling, spänningsomvandling och omkoppling tas fram. Projektet har begränsats till en del av Botniabanan, sträckan Örnsköldsvik-Nordmaling.I denna rapport har trafikfrekvensen på den valda sträckan på Botniabanan undersökts för att bestämma en genererad effekt till inkopplingspunkten, samt för att undersöka när det kan vara lämpligt att koppla om till hjälpkraftnätet.

AbstractThis essay aims to problematize and illuminate the connection between special-education and nature-based activities. With a theoretical ground that is based upon a sociocultural perspective I consider the information from the field. Through a qualitative and critical perspective I performed individual interviews with five pupils from the sixth school-year in the Swedish elementary-school. I also performed Focus-group interviews with two educators and three teachers in the same school-form. By a Hermeneutical working-method I have found out that the informants in my survey have a common experience that activities performed in nature has a positive effect on learning.

When the Iron spirals investigated in this paper saw the light again no one looked at them as nothing more than decoration. It was first during the 2011 excavation in Old Uppsala that the symbolism of the items no longer could be ignored. The spirals of Old Uppsala lay along the walls of the great hall, which stood upon one of the human constructed plateaus in the area. The hall had been burned down and then cleared of all lumber. Then the iron spirals had been placed in the positions and then everything was sealed with a layer of clay.A study of the artifact began with the purpose to contextualize and interpret the iron spiral.

For over 40 years, there's been a debate in Sweden of whether it's good or bad with maintenance therapy for heroin addicts. This method is far more acknowledged in other parts of Europe and in USA. The aim of this paper was to explore how public actors manifest their thoughts concerning the subject of the substitution program in Sweden. This approach includes the complex of problems that can be found in statements and the discourses that these operators stand for and support. In my analysis the philosophical thread was principally based on Michael Foucault ideas, but also on other theories related to social constructionism.

Målet med detta examensarbete, utfört på uppdrag av Vectura Consulting AB, har varit att undersöka möjligheten att ansluta en vindkraftpark till järnvägens kontaktledningsnät. Möjligheten att koppla om vindkraftparken till järnvägens hjälpkraftnät, som bland annat förser växelvärmare och signalsystem med effekt, har också undersökts. Eftersom kontaktledningsnätet och hjälpkraftnätet arbetar med olika frekvenser och spänningar, 16? Hz och 15 kV respektive 50 Hz och 22 kV, måste därför en komplett krets för frekvensomvandling, spänningsomvandling och omkoppling tas fram. Projektet har begränsats till en del av Botniabanan, sträckan Örnsköldsvik-Nordmaling.I denna rapport har trafikfrekvensen på den valda sträckan på Botniabanan undersökts för att bestämma en genererad effekt till inkopplingspunkten, samt för att undersöka när det kan vara lämpligt att koppla om till hjälpkraftnätet.

Begreppet landskap kan betyda både utsiktslandskap, så som det används på engelska , och område, region, som är grundbetydelsen i de germanska språken. Torsten Hägerstrand introducerade i början på 1990-talet begreppet förloppslandskap, som vänder sig mot ett statiskt betraktande av landskap och istället tar fasta på landskapets processer. Målet med denna litteraturstudie är att presentera en översikt av förloppslandskapets idéer. Syftet är att med detta som bakgrund föra en diskussion kring förloppslandskapets relevans i dagens planeringssituation. Europeiska landskapskonventionen företräder en landskapssyn där samspelet mellan natur och samhälle betonas, men till skillnad från förloppslandskapet så är fokus inställt på människans upplevelse.

This Master's Thesis describes the design of a new system where a digital signal processor has been added to an existing imaging system consisting of field programmable gate arrays. The new system will offer a higher degree of flexibility by considerably shortening the design time and make it possible to implement more complex algorithms than the existing ones. The choice of system architecture and a test implementation are discussed. The test implementation consists of a program for the digital signal processor and VHDL code for one of the field programmable gate arrays. The code for the digital signal processor was designed for testing on an evaluation board from Texas Instruments.

This master thesis comprises analysis and dimensioning of a keyed joint between a generator axis and a hub with aid from the FEM-software ANSYS Workbench 13.0.The generator axis is a part of a hydroelectric power station that generates electricity with a reactions turbine, a Kaplan turbine. The existing keyway consists of one parallel key with the width 90 mm and height 45 mm. Due to a planned increase of the power of the generated power with 32 % a design study was needed to see if the keyed joint would be suitable for the extra force. Because of the fact that the axis diameter is bigger than the standards covers/recommends a the keyway had to be re-dimensioned. In an earlier assignment from Skellefteå Kraft AB to Sweco Energuide the keyway was planned to be properly dimensioned, but no final solution was approved.During this master thesis a number of different numerical tests were made.

AbstractTitle: The New Type of Music Industry at AllEars.se (Den nya musikbranschen på AllEars.se)Number of pages: 49 (53 including enclosures)Author: Viktor BackemarTutor: Else NygrenCourse: Media och Communication Studies CPeriod: Fall 2007University: Division of Media and Communication, Department of Information Science, Uppsala University.Purpose: The purpose of this paper is to compare AllEars´ own view of the website AllEars.se to an observed view of the same site. The comparison is based on theories regarding the Internet in today?s society, convergence, communities and collective intelligence, interactivity and participation, and business in today?s society.Method: Since the paper has a purpose to compare two views of the same website there are two main methods in use. AllEars´ own view has been created via an interview with the company?s CEO, a press release that was released in connection with the launch of the website and texts found on the website.

In order to fully grasp the phenomena 'City' we must understand its political structure as an integrated part of its physical structure and vice versa. This thesis focuses on one crucial element of the City, the public space, and discusses it in relation to the public realm, or sphere, of the City. The aim is to see if it is possible to conceive public space as a spatial dimension of power, and if so, how to analyse this. With the help of the theoretical tool of two ideal types of the configuration of public space, "The city as civic public life" and "The city as authoritarian control" an empirical study is carried out on the case of Prishtina, capital of Kosovo.Conclusions made are that function and use of a city's public spaces can be understood in relation to changes in the political climate of the society. Furthermore, a void in the asset of concepts offered by the ideal types is found ? and therefore also need for new concepts to describe and understand a public space undergoing a dynamic transformation, as being a part of a city in political transition..

This candidate thesis contains the possibility of expand the Swedish photovoltaic market through photovoltaic cooperatives and a photovoltaic exchange. In the current situation there is a lot of problems with production of electricity from photovoltaic, that?s why we show some possibilities how to avoid these. To understand the problem with photovoltaic produced electricity we first give you a background.We show how to expand the Swedish photovoltaic market by describing how a photovoltaic cooperative and photovoltaic exchange could work in Sweden. It have been confirmed from our market research that the interest of photovoltaic cooperative and exchange is high.To find out how profitable photovoltaic is in Sweden, have three projections been made.

Research establishes, that clothes constantly communicate something about its wearer. You send out different messages depending on what sort of clothes you are wearing. For example, a suit can project social status and power, while, a pair of jeans usually conveys a more casual impression. Either way, research state that clothes are symbolic expressions.This essay focuses on the theme clothes and pupils within the school world. Do pupils today experience clothes as symbolic values? By using qualitative interviews, I have examined how four senior high school pupils talk about clothes and its potential symbolic value in school.

This master thesis comprises analysis and dimensioning of a keyed joint between a generator axis and a hub with aid from the FEM-software ANSYS Workbench 13.0.The generator axis is a part of a hydroelectric power station that generates electricity with a reactions turbine, a Kaplan turbine. The existing keyway consists of one parallel key with the width 90 mm and height 45 mm. Due to a planned increase of the power of the generated power with 32 % a design study was needed to see if the keyed joint would be suitable for the extra force. Because of the fact that the axis diameter is bigger than the standards covers/recommends a the keyway had to be re-dimensioned. In an earlier assignment from Skellefteå Kraft AB to Sweco Energuide the keyway was planned to be properly dimensioned, but no final solution was approved.During this master thesis a number of different numerical tests were made.

Målet med detta examensarbete, utfört på uppdrag av Vectura Consulting AB, har varit att undersöka möjligheten att ansluta en vindkraftpark till järnvägens kontaktledningsnät. Möjligheten att koppla om vindkraftparken till järnvägens hjälpkraftnät, som bland annat förser växelvärmare och signalsystem med effekt, har också undersökts. Eftersom kontaktledningsnätet och hjälpkraftnätet arbetar med olika frekvenser och spänningar, 16? Hz och 15 kV respektive 50 Hz och 22 kV, måste därför en komplett krets för frekvensomvandling, spänningsomvandling och omkoppling tas fram. Projektet har begränsats till en del av Botniabanan, sträckan Örnsköldsvik-Nordmaling.I denna rapport har trafikfrekvensen på den valda sträckan på Botniabanan undersökts för att bestämma en genererad effekt till inkopplingspunkten, samt för att undersöka när det kan vara lämpligt att koppla om till hjälpkraftnätet.

A great amount of todays drivers? are constantly exceeding the speed limits on the roads. As a consequense of this, a large number of speed redusing devises, for example speed bumps, has been built around the country. As reports in local medias point out, the acceptance for these types of speed reducing devises, differs and there are many thoughts about location, construction and effect on the traffic safety. This paper approaches the complexity of these problems from the drivers? point of view, based on literature studies and a questionnaire. The goal is not to argue for or against speed reducing devises, but to try to find the source of annoyment and how to proceed further. Some of the problems turned out to be easy to fix, for example porly marked speed bumps.