ABB Surge Arrestors in Ludvika have for a long time had a problem to keep the moisture at a steady state in the production of their ZnO-powder, that is used to produce varistors.Some black-box models of the spray drying process have been designed and evaluated to find a solution for the problem. After evaluating the collected data it has been found that variations in the supply voltage causes control difficulties for the operator. A cascade control system was designed, consisting of three PI control loops designed with lambda tuning. The disturbance in the supply voltagewas used as a feed forward in the control system.At the end of the project the control system was installed, and tests were made to verify the functionality of the regulator. It was shown that most of the variations in the moisture of the powder could be eliminated using small resources, through purchase of a process controller and four power meters.

The purpose of the study is to investigate and elucidate how low-cost airlines can influence and develop tourism in a region. In order to bring about the purpose the author used two research questions. Have low-cost airlines contributed to regional development? How many additional visitors have low-cost airlines contributed to Stockholm? In order to answer these questions a survey was carried out at Arlanda airport and statistics were collected. The results of the study show that there has been a regional development.

The purpose of this master?s thesis is to examine how pupils with Swedish as a second language and school librarians perceive the concept of pleasure of reading and the feeling of being a part of society. Our research is based on qualitative interviews with eight students in grades 6-9 and from two different schools. We have also interviewed two school librarians in these two libraries. As a method of analysis, we used phenomenography because it is the informants' perceptions of the phenomenon of pleasure of reading that we investigate.

In a time when milk producing farm businesses face decline in profitability it is of great importance to examine how the situation can be improved. This thesis is a study off efficiency in milk producing farm businesses represented by Swedish, Dutch and German farms. The aim of this study is to investigate whether any differences exist between companies in these countries. Moreover, the study includes a mapping of a number of factors that determine how efficient milk production can be managed. This mapping is based on a literature review on prior efficiency studies followed by qualitative interviews with milk production advisors as well as a questionnaire sent out to dairy farmers in Sweden.

The aim of my study is to critically analyse the discourse behind two different integration projects in Sweden, by using post colonial theory. My hypothesis is that many projects intended for increased integration includes a view of immigrants as the ?Others? which can be seen in how one talks about integration and culture in the discourse behind integration projects.The first of these two projects aims at increased diversity in the cultural sphere, organized on at state level. The purpose of the second project is to increase the communication and results for schools in areas with a high rate of immigrants in Malmö. In my study I make a discourse analysis of the discourse behind these two projects and study how they are motivated and how one conceptualise culture and integration in these documents.

?Boverket? the Design Regulations in Sweden, also called BKR has for a long timebeen the mandatory standard that has guided and regulated construction design. Butat the end of 2010 BKR was replaced with Eurocode. This report deals with thecomparison of these two standards when it comes to wood construction. Duringwinter 2009/2010 there were many roof collapses due to excessive loads on theroofs across Sweden.

The eld of Brain-computer interfaces (BCI) concerns linking together an external device with the brain of a human or an animal. By doing this the conventional use of a mouse or keyboard can be circumvented, which can greatly benefit people with different types of diseases that cause paralysis or other loss of motor control, such as Amyotrophic lateral sclerosis (ALS). A BCI can also be used for cognitive training of either healthy or mentally impaired subjects to increase cognitive capabilities.In this thesis an implementation of an interface is made against such a device, the Emotiv EPOC Headset. The result is meant to be a stable basis for further study using the device. An in-depth study of the history of EEG and its current use in clinical work and research in the topics of BCI as well as Human-computer interaction (HCI) is presented.

This thesis examines a possible control strategy to minimize flow fluctuations in Uppsala?s district heating system. High variations in flow rate may lead to complications caused by hydraulic constraints in the district heating system. These complications, such as inadequate pressure and temperature levels, increase the risk of heat delivery failures. It is therefore important to avoid such situations both for the producer and for the customers.Typically, the forward temperature is controlled by using a rough correlation with respect to the outdoor temperature.

Asperger´s syndrome is a state with certain difficulties in social relations, communication and perception. People with Asperger´s syndrome often have a special interest for a certain topic. The main purpose of this study was to describe how grown people with Asperger´s syndrome make sense of living with Asperger´s syndrome. The inquiry was based on semi-structured interviews with eight persons with Asperger´s syndrome. We reached those subjects trough interest organisations for people with Asperger´s syndrome.

The overarching aim of this essay is to analyze, from a feminist point of view, the moral responsibility for the structural oppression of women. In this discussion I focus on the issue of moral responsibility for sexual violence against women, such as rapes. I claim that a feminist theory of moral responsibility has to be based on a collectivist approach. I argue that men should be considered as collective moral responsible for the structural oppression of women. However, it is important that we analyze the interaction between actor and structure.

The common asylum and migration policy of the European Union is a struggle between a strong belief in the protection of human rights and the need of strong and secured borders. This paper highlights the dilemma that occurs in the common asylum and migration policy of the European Union. What happens when the union have to choose between liberal standards with high priorities to human rights and a realistic focus on security? The aim is to study the asylum policy presented in the Stockholm Program, and thereafter evaluate what kind of character the union has itself. By an ideal type analysis of the Stockholm program from 2009, the common asylum policy is divided into either liberal or realistic ideas.

According to the curriculum Sweden?s elementary school is to educate students in subjects such as "Listening, debating and argumentation". I ask myself if this is actually something that every student is being provided with. The purpose of this study is to gain additional information about children?s participation in the classroom.

Lättelement located in Örnskoldsvik AB is one of Sweden's leading companies in the development of building elements in the form of roofs, walls and floors made ??out of light beams. The company has clients from Lund to Kiruna, and from Norway. This means that the elements have high standards when they have to take many different loads from wind and snow due to such wide geographic variation.The roof elements are structured so that the main body is made of light beams with an I?profile.

Anne Charlotte Leffler, Victoria Benedictsson and Frida Stéenhoff were all part of the Modern Breakthrough in Swedish literature. By utilizing Jürgen Habermas theoretical works on communicative action, and Nancy Fraser?s supplementary reading of his theory, this essay makes clear that the authors? struggle for an understanding and a rethinking of social norms in their plays Skådespelerskan (1873), Romeos Julia (1888) and Lejonets unge (1896) can be read as a contribution to the public debate. Dialogue has a key function for female authors during the Modern Breakthrough. Women and mens? possibilities to take part in conversation and argument as equals, requires the professional woman?s transgression and access to the privileges of both public (State) administration ? ?system?, and world of everyday life ? ?lifeworld?.

Nearly half of the worlds population is individuals under the age of eighteen. The UN Convention on the Rights of the Child state in its first article that a child is ?every human being below the age of 18 years?. Our aim and purpose with this essay is to problemize this broad definition. Our hypothesis is that the definition brought by the UN Convention on the Rights of the Child is too wide and therefore brings difficulties when children of different ages beneath eighteen should and shall be treated the same.