This master thesis reviews advances in detection and diagnosis of static friction (stiction) in control valves. Control valves suffering from stiction results in oscillating control loops which in turn decreases both the process stability and reliability. Perstorp AB sees a necessity to automatically detect stiction in valves before the effects of the malfunctioning valves have become too severe. This thesis presents an introduction to maintenance, control loops and how stiction in valves can affect performance of control loops.A selection of methods presented in the literature are introduced and examined using normal operating data from the site in Perstorp. Common for all selected methods is their intuitive ideas and that they are based on normal operating data and minimum amount of process knowledge.

Title: Multi channel publishing: a qualitative study on how Norrköpings Tidningen publishes news in multiple channelsAuthor: Roland AlbinssonThesis supervisor: Per-Anders ForstorpBackground: In this day and age, the media is omnipresent and a part of our daily life. The phenomenon of media convergence can be traced back to the birth of the internet, and today all of the major newspapers have a website of their own. As a result of multichannel publishing, consumers have a wide range of tv channels to choose from, but there is still uncertainty as to whether more channels automatically equates to more and better news. There is no doubt about the fact that multi channel publishing is a necessary survival skill for media conglomerates today, but effects such as news recycling and the concentration of ownership are in conflict with the consumers? availability demands.Purpose: The purpose of this thesis is to, by means of a case study, describe how NT?s multi channel publishing is an expression of media convergence, as well as to study how the news are affected by multi channel publishing.Research procedure: This study is based on three different research methods, observations, text analyses and qualitative interviews.

In my paper I have examined the United Nations role in the democratization of Kosovo. In order to complete this purpose I have asked two questions? How has the UN contributed to the democratization of Kosovo that has taken place so far?? What advantages and/or disadvantages has the UN presence in Kosovo had from a democratic perspective?The method I have used in my paper is a qualitative one, and more specified a qualitative text analysis. This means that I have examined a rather small number of sources, but in return I have analyzed these sources very carefully. In addition to the choice of a qualitative method I have used Robert A.

AimThe aim of the study was to develop a method for the survey of play movement demands and temporal patterns in order to enable a descriptive study of the defensive players in American Football. The overall aim was to  improve the understanding of how American Football is played to create opportunities for enhancement of current or developing new training methods to better suit football.MethodFifty plays from a Division 3 college football game on video from 2005 was divided into sequences of action for one player each from the defensive line, linebackers and defensive backs and analyzed with the video analyzing software cSwing. Every players sequence of action was recorded in a spreadsheet and noted on a scaled football field where distances were measured and together with time stamps from cSwing velocity was calculated.ResultsUsing this method it was possible to describe the play movement demands and temporal patterns which was the main task of the study. The defensive end worked on an average 4.61 seconds per play, the distance was 12.4 meters and average speed 2.5 m×s-1. The linebacker worked on an average 4.35 s per play, 13.7 m and at a mean speed of 3.0 m×s-1.

The aim of the study was to evaluate parents and course directors?experiences of the AKKTIV ComAlong-course (Augmentative and AlternativeCommunication ? Early Intervention). ComAlong targets parents of pre-schoolchildren with extensive communication difficulties and aims to give parentsknowledge about different aspects of communication, communication developmentand AAC. Both qualitative and quantitative methods were used. Individualinterviews and pair-interviews with totally nine persons were performed and 54course questionnaires filled in by parents were evaluated.

The purpose of this study is to analyze what criminological theory explanations the Sweden Democrats use in their criminal politics. The three main questions from which we assume are: How do the Sweden Democrats approach crime? On which criminological theory is the Sweden Democrat?s policy of crime based upon? And which measures and preventive methods do the Sweden Democrats find appropriate to fight criminality? Our hypothesis is that the Sweden Democrat?s reuse/reproduce the Labeling Theory and that the party with its standpoints in this area and the rhetoric used, create a risk for individuals and/or groups of people to be labeled. The labeling can then contribute to increasing crime, in the form of the self-fulfilling prophecy. Our study is a qualitative study, based on literature studies.

This thesis focuses on the motives and incitements for voluntary work. The main question for this thesis is why people get involved in voluntary work. What are the motives and incitements for voluntary commitment and what do people gain from this kind of commitment? The thesis is based upon qualitative research methods at Frivilligcentralen in Norrköping. The theoretical perspectives are a community commitment, satisfaction of being part of a meaningful context, altruistic and self-interest and an increased pace of social changes.

Abstrakt I den här uppsatsen undersöks hur ett narrativ kan drivas inom digitala spel enbart med hjälp av spelmiljön. Syftet är att få förståelse för vad miljöberättande behärskar som en självständig form av berättande och vad författarna kan göra för att uppnå detta mål. För att undersöka problemområdet genomfördes en spelproduktion där metoder framtagna under undersökningens gång applicerades. Produktionen testades av utomstående studenter i medieteknik och resultaten sammanställdes med reflektioner kring vad som uppnåtts och de metoder som applicerats. Undersökningen beskriver arbetsprocessen och metoder och visar hur dessa kan driva ett narrativ med en spelmiljö.

This work is an essay on language, multilingualism, and identity. My purpose in this work was to try and explore how today's young people views in their native language, identity and language development in a multicultural society. I was also interested in how young people find a balance between two very different cultures. Since my work will be based on interviews, I have chosen a qualitative approach. My choice of the qualitative method is primarily related to my purpose.

This thesis has been carried out in collaboration with the IT Company MPQ consulting AB in Halmstad. The task we were assigned by MPQ concerned the development of a scooter that can be used year round. We have with the companydeveloped the criteria and requirements for the product in which the goal is toproduce a primary solution that meets the set criteria and fall within the project'sboundaries.The project involves a wide range of different design methods for idea generationand idea development. The project also addresses engineering methods such asprinciple and primary engineering. Occurringmethods in the project include FredyOlsson principle and primary engineering in cooperation with SVID's - Swedishindustrial design process, etc.The final solution will be presented in the form of sketches, CAD models withassociated drawings and a rendering from the program Keyshot..

The aim of this thesis is to examine how five works of fiction about anorexia and bulimia have been received in Swedish daily press reviews. The investigation is based on 60 reviews, which are analysed with a qualitative method consisting of close-reading and where a feministic perspective is used. The main question concerns how and to which extent the basis of valuation in the reviews is effected by the fact that the books describe a primary female world of experiences. The investigation shows, among other things, that many reviewers consider the books about eating disorders to be too many. They categorize the books about anorexia and bulimia as a genre of its own and place the books into the literary system principally by referring to other books about anorexia and bulimia.

The environmental debate is more intensive than ever before and the demands on companies increase. There are a number of methods to make it easier for the companies to fulfil the demands. Life Cycle Assessment (LCA) end ecodesign are some of the methods that can be used. Syntronic AB has the possibility to reduce the products´ environmental impact in the design phase. Therefore it is important for the company to make it possible to visualize the negative environmental impacts a product can cause in an easy way. It is also important to visualize for there clients if any improvement is possible. The purpose of this thesis is to develop a simplified model.

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.

Induction motors, often referred to as the workhorse of the industry, play an important role in production today. Therefore, it's important to diagnose any faulty induction motor prior to failure to avoid costly and time consuming production stops.This thesis compares methods for diagnosing induction motors in operation, MCSA, Park's vector approach and the standard method used by Swedish industries today. By simulating broken rotor bars and short-circuit in one of the windings, each method is tested and the results are compared using matlab.The results need further verification due to uncertainties of the condition of the test motor, even though the experiment gives a hint of the different advantages of each method. A combination of the methods should be able to tell if the motor needs further examination..

Computerized methods for searching pictures are becoming more common. With these it ispossible to make powerful search requests using a combination of terms and search oncomprehensive descriptions of the pictures. The descriptions can encompass various aspectsof the content and allow different interpretations and levels of detail.This essay is about how you can examine and describe the content of a picture from manypoints of view. We have tried to identify differences in searching behaviour, and studiedsome methods for indexing of pictures. Our concepts are taken from the philosophy of artand from theories about the meaning of languages.In the future perhaps libraries can make pictures and illustrations in books available to thepublic, in a sophisticated system, for the purpose of providing visual documentation forstudy, research or other kinds of exploitation..