The purpose of this degree project was to build laboratory equipment for a new course in power electronics that starts this autumn 2010 at Uppsala University. The equipment is intended for student labs and it covers the most important areas of the course including rectifying, buck-/boost-converters and PWM-modulation. It is built as one sealed unit where all the electronics are built-in but visible and it has a connection board where students safely can connect the different circuits. The project has advanced from theoretical studies of circuit design, choosing of components and simulations to drawing the printed circuit board (PCB), soldering, case building, final testing and troubleshooting - basically most steps from an early idea to a final product. Measurements on the final product gave about the same results as the earlier simulations of the circuits and the result is overall satisfying..

This case-study examines the correlation between young men and democratic instability in group discussions with two analyzing methods in one. One part of the method used is deliberative democracy which aims to explain how democracy works within the frames of discussion in ordinary citizens groups. In this study the citizens is upper level secondary school students. The other part of the method used is the theory pulled by many scholars lately, the demographic impact on democracy. With these two combined in one this study compare the theory of young men as more active in political violence and as a destabilising factor of democracy on country-level with the results of the study in deliberative democracy in small group discussions.

The aim of the study was, through qualitative interviews with school counsellors in Swedish primary schools, to study what the counsellors are experiencing condition their ability to work proactively according to the Swedish Education Act provisions on student health. During the study, six interviews with school counsellors who worked in the same suburbs, was conducted. The theoretical approach that was used is Michael Lipsky's theory of street-level bureaucrats and the term discretion. The overall outcome of the study was that the interviewed school counsellors felt that they did not have good opportunities to work preventively as the Education Act requires. The main reason for this was the school counsellor?s heavy workload.

Durban, South Africa?s third-largest city is a socially segregated post apartheid society, struggling with high unemployment and AIDS. The city becomes even more complex with a changing climate, creating an influx of people to the city, putting scarce resources under further stress. Warwick Junction, an important transport hub in the centre of Durban, holds a large site of informal trading alongside the formal markets. This informal sector generates large financial flows and provides for a rapidly growing population. The aim of this thesis is to develop an approach that is realistic and relevant to planning and design of an urban context in South Africa.

Impulsivitet och upplevd kontroll är båda viktiga konstrukt inompsykologi. Sambandet mellan dem har varit oklart delvis pgaotydlighet och oenighet gällande impulsivitetsbegreppet. På senare tidhar nya teoretiska modeller av impulsivitet som ett mångfasetteratkonstrukt utvecklats. Syftet med denna studie var dels att undersökapsykometriska egenskaper hos en svensk översättning av UPPSskalan,dels att undersöka sambandet mellan upplevd kontroll ochimpulsivitet med hjälp av den nya UPPS-modellen. Datainsamlinggenomfördes med självskattningsskalor.

Studiens syfte var att undersöka vilka former av psykisk ohälsa som skolkuratorer mötte samt hur de arbetade med detta. Vi har därför utfört en kvalitativ studie och intervjuat sex skolkuratorer som arbetar med högstadieelever. Resultatet visade att psykisk ohälsa var ett mångtydigt begrepp, men att de mest centrala formerna av psykisk ohälsa i skolan var stress, prestationsångest och självskadebeteende. Skolkuratorernas arbetsuppgifter upplevdes som diffusa, men de tre mest framträdande arbetsuppgifterna i samband med psykisk ohälsa var kartläggning, enskilda samtal samt att remittera elever vidare till andra aktörer. Skolkuratorerna fokuserade främst på akuta insatser vilket resulterade i att det förebyggande arbetet att motverka psykisk ohälsa blev eftersatt.

The primary purpose of this essay is to study and describe what student?s self experiences of the media coverage of social work. The theoretical perspectives applied to analyse the empirical data are social constructionism, roles, and construction. The method of this study is qualitative and based on ten personal interviews. The material has been analysed by condensed meaning units and three themes have been used, the media coverage of social work, the relationship between social workers and media and the influence media coverage has on the students.The results given from these interviews show that the majority of the interviewed group considers the media coverage of social work as negative.

Can the Danish "Aftalesystemet", a system with the intention to simplify the use of services within health care, be used in Sweden? This project has investigated the possibility by installing and testing the system and explored its functions to detect any eventual problems. Analyses were made of the system's graphical part and the underlying code to see in greater detail how the communication between units occurred, since no actual documentation of it existed. Discussions with the developers took place regarding how the current system works and how further development should continue. In order to test the system, a completely virtual environment was used.

To understand the glass electrode needs knowledge from more than one level. The construction ofthe glass electrode is one part, an other is the composition and structure of glass. The Nernstequation have an important role, but also the sources of errors in the analysis and the calibration ofthe glass electrode. Focus for this article is how the glass electrode really works and how Gibbs freeenergy made the potential dependent of the concentration of H+and gives the logarithm to thefunction. Nikolskii's ion exchange theory starts to explain the question about how the potentialcreates and Baucke's dissociation mechanism made it more explicit.

During my time as a student of education I have learnt that it is my responsibility, as a teacher, to adjust the ways in which I teach to the needs, abilities, experiences, and thoughts of each individual child. What I have not yet gained much knowledge on is how to go about finding the children?s thoughts.In this thesis I investigate the interview as a method of finding out how sixth graders think about their mathematics education. Four children were interviewed. In addition to these inter-views, as a means of giving a broader perspective to and a greater understanding of the chil-dren?s answers, one math lesson was filmed and the math teacher was interview on two sepa-rate occasions.What I found was that a number of factors seemed to influence the children?s thoughts and answers, and that their answers were most likely not always a mirror of their thoughts.

On Ericsson Ltd in Borås a wireless communication system called MINI-LINK? is produced. In order to sell their product with the best possible quality guaranty, there is a signal processing circuit called ATLAS implemented in the system. This circuit would eventually be useful in the production and for the repairs of the radio units. Our commission was to examine the possibility for this use.

During the 19th century the Elementary school and its teachers emerge in the city of Halmstad and in the parish of Veinge as well as in Sweden overall. The aim of the essay is to enthrone these teachers? conditions and a comparison is done between the teachers in these two places. The mate-rial that is used is for example minutes from the board of education in Veinge and the city council of Halmstad, collected works about the elementary school of Halmstad as well as litera-ture regarding the subject. The essay starts with a short background history about the Elementary school and its teachers.

How do you see on natural science within preschool? Does education and interest play a role for how the educationalist works with natural science? And is the children?s interest for natural science affected by the educationalist, what does the educationalist think himself? These questions have I under my teachers training and under deputyship in preschool asked myself and these questions lies to behalf for my investigation. I interviewed five educationalists on different preschools for my investigation.My investigation resulted in that I have been able to see a certain conjunction between how you work with natural science in preschool and the educationalist education or interest. What also plays a role is that you often associate natural science with knowledge of nature. The educationalist seems overall positive to natural science, but depending of a lack of knowledge it feels strange and difficult.

The purpose of this paper is to investigate some aspects of teaching environmental issues, as they are manifested in another culture. In this paper, I will discuss how you teach environmental issues, how the teaching environment is formed, and what an environmental issue means to a South African teacher, as well as, if there are any cultural aspects to what an environmental issue is. Seven observations were made and qualitative interviews with four teachers teaching Life Science in Cradock, South Africa - The results showed that these South African teachers, independent from each other, followed a similar pattern in their teachings. These patterns contain gathering information concerning environmental issues in the immediate surroundings, as well as using the text book and teaching environmental issues through lectures. It was not possible to draw a conclusion about the cultural aspects in association to environmental issues.

AbstractIn this work, I have chosen to write about children in grief. Since children in grief is a large area, I have chosen to focus on how preschool handles and works with children who has loosed a parent, siblings or a play-mate by death. The aim of this work is to contribute knowledge about how you in preschool can handle and work with children in grief. To get answers to my questions, I have studied the current literature in the field. I have also interviewed five people with experience and knowledge of work with preschool-children affected by grief.