The aim of this master thesis was to create a dynamic model for the processes in a solid fuel boiler of the moving grate type. Another aim with the model was to keep it as simple as possible but still able to catch the dynamics of the processes in the bedplate of the boiler. The creation of the model had its origin from drying and combustion equations used in earlier modeling work of boilers. The represented model has been used to simulate different kinds of disturbances in a boiler and different ways to control the boiler. These tests show that controlling a number of parameters in the bed of the boiler is an effective way to keep the grate stable during disturbances.

Proven i dagens skola är ofta av klassisk karaktär, skrivna så att de endast syftar till naturvetenskapen som en produkt. Hur skall vi få proven mer motiverande för eleverna? Ett sätt kan vara att införa mer vardagsanknutna problem i proven. Arbetet syftar till att göra en jämförande studie bland ett antal naturvetenskapsstuderande gymnasieelever, där vi jämför elevers prestation och motivation vid klassiska faktabetonade fysikproblem kontra vardagsanknutna frågor. Detta följs upp av elevintervjuer.

Sverige har bidragit med trupp till internationella insatser sedan 1950-talet. Detta har gjorts med bidrag från framför allt markstridskrafter men även med luftstridskrafter. Det dröjer fram till 2006 innan beslut tas om en marin internationell insats i form av korvettförband som bidrag till FN-insatsen UNIFIL i Libanon. Denna insats har fram till idag följts av fyra marina insatser, en förlängning av UNIFIL i Libanon 2007 och tre insatser i Somalia under åren 2009-2013. Beslutet om den marina insatsen i Libanon är för marinen banbrytande.

From a social perspective, I have been working on how to change current consumption patterns through a change in people's behavior and attitude towards their possessions. The concept is based on how we can value, care for, and preserve our belongings by using theories in the empathic design field. I have created a structure that allows people to become an active part of a creative process and create their own products. Through this commitment, an emotional relationship is built between the user and the product, and the product tends to gain a longer life. Based on a method to manufacture your own yarn by reusing old clothes, I want to provide the basic tools for an easy and playful way to build the knowledge needed to produce something useful..

Högtider är i Skandinavien förknippade med alkohol och festligheter, detta är en del av vår kultur. Konsumtionstillfällena är få och oftast placerade vid veckoslutet, det är mer accepterat att vara full en fredagskväll är mer än en måndagsmorgon. Beslut från regeringen avser mål och insatser för bland annat användandet av alkohol samt att minska bruket av det. Att begränsa alkoholens negativa effekter har länge varit en viktig fråga för folkhälsan. I och med detta skapades kampanjen Varannan vatten, för att minska berusningsdrickandet i samhället.

This essay takes the three models from Allison and Zelikow book Essence of decision and applies them on the Swedish defense system. After the cold war the Swedish defense system had to undergo changes to be a more modern defense and be able to defend Sweden against threats. To also be able to cooperate with other countries in peacekeeping operations the Swedish defense had to be reorganized. The solution was to change direction from a defense system that was organized for invasion to instead be a movable defense ready for any challenge in Sweden or abroad. This reorganization will be analyzed according to the three different models..

The purpose of this thesis is to historically describe how Fédération Internationale deFootball Association (FIFA) interprets how the discourse of anti-racism has developed withintheir own organization throughout the years. In doing so, the thesis lands in a present timeperspective and then aims to identify the norms which FIFA, according to the organizationitself, stands for in regard to anti-racism within world football. That standard of behavior isthen put in contrast with the hidden ideological conceptions which, with the applying of apost-colonial perspective, can be found in the rhetoric used by FIFA in expressing themselvesabout their anti-racism stand.The methodology used in this thesis builds upon a qualitative text analysis approach inwhich solely primary sources available through the official website fifa.com are considered.The study finds that anti-racism is a relatively young concept within FIFA and that the communicatedideal standard of behavior circles around terms such as unity, diversity, solidarityand equality. Further on, FIFA clearly articulates how the universal power of football as suchcan unite people and that FIFA, as the administrator of this the world?s greatest sport, can setan example for the rest of the world to follow when it comes to notions of tolerance and solidarityin preventing racism in the future.In following the terminology provided by the post-colonial theorists Homi Bhabha andGyatri Spivak, and applying the concepts of fixity and essentialism on the rhetoric aroundanti-racism, the study discovers that FIFA, in sharp contrast to the articulated norms, in factexpress ideological conceptions of skin as a barrier of difference between people, and thatFIFA on good grounds can be accused of reproducing racist stereotypes rather than bridgingthem.The study concludes that its findings clearly demonstrates the increased need of consideringsports, and more specifically international sport organizations, as a basis for researchwithin the academic field of International Relations, and that a postcolonial perspective verymuch can provide alternative understandings of how these actors operate and what influencethey might have in the international system..

Programvaruutveckling lider idag av stora problem och många av problemen är kopplade till hur krav samlas in och hanteras. Ett sätt att underlätta kravinsamlingen och att öka kommunikation med kund är att ta fram en prototyp, vilket är en konkret representation av programvaran som ska tas fram. När kravutvinningen har kommit tillräckligt långt kan denna prototyp användas som en del av en kravspecifikation. En vanlig form av kravspecifikation är ett dokument, men även en (exekverbar) prototyp kan vara en effektiv representation av programvaran som ska tas fram.I detta arbete undersöks det vilka problem som kan uppstå då en prototyp används som en del av en kravspecifikation. Problem identifieras i litteraturen och intervjuer utförs för att undersöka vilka problem som finns i praktiken.

The object of the essay was to investigate the argumentation in the bill, the comments from unions and the authorities, among others and the motions concerning the bill. To analysis this argumentation I have been using feminist theory, specifically Carole Lee Bacchis ?What?s the problem?-aproach. I also used Maud Eduards and Diane Sainsbury to complete my theory. They describe men as the norm of the society and women as deviant.

Problem solving is a big part of design, however a lot of emphasis is put on creativity in research related to the effects of stress. Research has shown that the amount of stress we feel affects idea generation. Stress may also affect the ability to solve problems, however the researchers don?t seem to agree about what the effect of stress actually does.The study was made through experimental sessions where the respondents were asked to solve 4 matchstick puzzles of similar difficulty. Depending on their outcome they experienced more or less stress.

A purchase decision can be seen as a multifaceted context that raises many unanswered questions. Understanding the consumer's evaluation of alternatives is complex and should be studied at a deeper rather than wider scale. There is a problem for retailers to understand how the consumer manages a purchase decision in a retail setting with durables goods that generates a higher effort. The aim is to describe the decision rules used by the consumer and how they are expressed in this context. A better understanding of which ones they use and how they are conveyed will help retailers to create effective marketing solutions that generate positive outcomes as increased profitability and customer satisfaction.

The purpose of this essay was to see how the construction of elderly immigrants as a problem in healthcare and elderly care has been described in the relevant literature. In the course of doing so I tried to answer the following questions; What is said to be the expected problems or difficulties in work with eldely immigrants? How are the expected members of the problemgroup defined and identified? Whos perspective dominates the description of the problem, the users or the investigators? These questions were hard to answer and I had to conclude that the problem was not clearly defined; there was only an assumption of a problem. This, however, has not been a hindrance in the category of elderly immigrants being claimed to be a group with problems that need research and further investigation. The dominating perspective is that of the investigators as they are the ones who define and identify who is a part of the problemgroup..

The subject of this two year Master's thesis in Library and Information Science is the information practices of illiterate immigrants in everyday life. The purpose is to examine how immigrants seek, identify, understand and value information sources and information, and how the practices have changed with their arrival in Sweden. It furthermore focuses on the barriers that illiterate immigrants meet in accessing and understanding information. It moreover investigates the strategies they use to overcome them.For this purpose twelve qualitative research interviews were carried out, with illiterate immigrants as well as with service providers. The theoretical concepts of the essay is information practices, which means that the information process is within a context, and information poverty, that people in different context do not have adequate and equal access to information and information sources.Using McKenzie's model of information practices, the essay concludes that illiterate immigrants are active in their information process, especially when they interact with information.

Denna studie har undersökt hur sociala problem beskrivs inom samtida svensk hiphopmusik. Syftet var att öka kunskapen om hur sociala problem formuleras. Därför har studien syftat till att undersöka vilken social problematik som beskrivs i hiphoptexterna samt hur och varför redogörelserna ser ut som de gör. I studien användes en innehållsanalys för att analysera 105 svenska hiphoptexter. Goffmans teori om stigma och Wacquants begrepp territoriellt stigma har applicerats vid analysen av de empiriska resultaten. Resultaten visar att svensk hiphopmusik tar upp sju sociala problem; missbruk, rasism, fattigdom, kriminalitet, utanförskap, prostitution samt hemlöshet.

The aim of this paper is exploring questions regarding the problem of absenteeism among high-school students in Sweden. Fifteen students attending an urban high-school have been interviewed about their views and experiences of absenteeism. The author analyzes the students? answers by taking into account two different sociological approaches which give two different explanations about the way young people experience and estimate education. The French sociologist Bourdieu theorized that differences in cultural capital influence the permanent internalization of patterns of thought and behavior.