The borehole heat exchangers of today suffer from poor thermal and hydrodynamic performance. The purpose of this thesis is to improve the performance of ground source heat pump systems and thermal energy storages by increasing the energy efficiency of the borehole heat exchangers. For this reason, the annular coaxial borehole heat exchanger (CBHE) has been analyzed. This type of heat exchanger is interesting in terms of both thermal and hydrodynamic performance. A model has been set up in the program Comsol Multiphysics in order to investigate the heat transfer characteristics along the borehole.

This paper explores the emic use of ?Internet trolls" and trolling behaviour in one specific Internet community. The findings are compared with, and put in relations to the conventional definition of Internet-trolls as individuals who deliberately, typically anonymously, antagonize other users of online common spaces.A forum dealing with matters of relationship issues in the Swedish online community Message Board of Familjeliv.se, was the subject of field-work that provided the basic empirical material for the research; three comparable threads on the subject of infidelity. These could all be said to contain suspected trolling, and such suspicions were also ascribed participants throughout the discussions. The analysis was undertaken mainly in terms of quality of narrative, performance and interaction.A comparative method and a genre analysis out of a holistic and functionalistic perspective is used to shed some light on how forum participants organize themselves and steer narratives towards desired outcomes.

AbstractIn Sweden all persons under the age of 18 are considered children. The age when it is possible to be held responsible for a criminal act, and therefor convicted in court, is 15. Society?s and, perhaps first and foremost, the authority?s attitude towards juvenile crime is that they should not be equal adults in the process within criminal law. Because children are considered essential for the society of tomorrow, it is important to pay extra attention to crimes committed by juveniles.

After having worked within the preschool and it?s system for a number of years, we have often reflected over the fact that many educators tend to look at children with language difficulties in several different ways, and many of them being conflicting. Something that might contribute to this problem is the fact that the term itself, language difficulties, is defined differently between individuals, who in turn affects the way educators and preschools deal with the problem.The aim of this study is to create an understanding of the problems related to language difficulties, and how it is being dealt with within the preschool environment. To achieve this we have chosen to work within a qualitative research approach, alongside a discourse analysis. The selection of informants we have chosen consists of ten, qualified educators.

Background: During extreme market conditions like the period during fall 2008 the discussion of what affects company value becomes apparent. The capital structure is the relation between borrowed capital and equity in a company´s financing mix. What impact changes in capital structure have on company value is a widely debated subject within the theory of finance. If a relationship between capital structure and company value exists the implication is that an optimal capital structure where company value is maximized also exists.Aim: The aim of the thesis is to study whether a certain relationship between capital structure and company value exists among selected stocks and companies listed on Stockholmsbörsens OMXS30.Implementation: With aim to fulfill the purpose of the thesis regression analysis has been performed among chosen stocks and companies. The empirical results eventuating from this have been analyzed from the view of elected relevant theory.Completion and results: We find that during normal market conditions a positive relationship between debt ratio and enterprise value (EV) can be established.

Syftet med detta examensarbete var att undersöka om Skellefteå Krafts arbetsmiljöledningsarbete är välfungerande och kan tillämpas i det vardagliga arbetet. Tidigare forskning har visat att positivt och tydligt ledarskap, utvecklad kommunikation, ett gott samarbete, delaktighet, tydliga roller, mål och förväntningar men också möjlighet att utvecklas, administrativt och personligt stöd och en bra fysisk arbetsmiljö leder till en ?frisk arbetsplats?. Arbetets teoretiska bakgrund utgörs av teorier om arbetsmiljö både av fysisk och psykosocial karaktär samt av andra väsentliga faktorer för att uppnå en god arbetsmiljö. Genom triangulering, det vill säga både kvalitativ och kvantitativ metod, har data till arbetet samlats in för att söka svar på frågorna: Hur ser fördelningen ut mellan det fysiska och psykosociala arbetsmiljöarbetet i Skellefteå Krafts system om arbetsmiljöledning? Hur arbetar ledning och medarbetare med den psykosociala arbetsmiljön? Hur tillgänglig är information om den psykosociala arbetsmiljön för medarbetarna vid Skellefteå Kraft? Genom semistrukturerade intervjuer med tio intervjupersoner samt genom en kvantitativ enkätundersökning med 51 respondenter, samtliga tillsvidareanställda vid Skellefteå Kraft, samlades data in.

The aim of this essay is to analyze how media constructs strategic positional statements in debates of great immediate interest in order to stress ideological standpoints. Two questions are derived on the basis of this aim.- How is Russia positioned in Svenska Dagbladet's and Dagens Nyheter's editorials in the debate on the Swedish defence during 09-01-13 - 09-01-31?- Are there differences in the positional statements between the newspapers?In the study a Critical Discourse Analytical (CDA) approach is applied, and more specifically that of Teun A. van Dijk. Both the theoretical basis and the methodological tools are based on van Dijks CDA.

ADHD (attention deficit hyperactivity disorder) is a phenomena that is much talked about in both schools and in communities. Today, there is a conflict surrounding the diagnosis ADHD. A part of the conflict takes part between the sociologist Eva Kärfve and Christopher Gillberg, professor in child- and teenage psychology. The roots of this conflict surrounds the much debated line of what is seen as normal and ?too? different, basically how many children that actually should have the diagnosis.

Föreliggande studie genomfördes i form av en enkätundersökning och syftade till att kartlägga förekomsten av självskadehandlingar bland studenter vid Lunds Universitet. Ett annat syfte var att ta reda på i vilken utsträckning faktorer, som påverkan från subkulturella strömningar, medias influenser eller en önskan att utmana tabun och "spränga" gränser kan vara bidragande till fenomenets uppkomst och vidmakthållande. Könsskillnader, frekvens och motiv bakom självskadehandlingarna var andra faktorer som undersöktes. Resultaten visar att 31.8 % av studenterna någon gång hade skadat sig själva. Studien fann inga signifikanta skillnader mellan könen i förekomst av självskadebeteende, vilket däremot gjordes avseende anledningen till självskadehandlingarna.

The purpose of this study was to examine and try to understand the physical environment focusing on the fenomena of scribble and damage at a high school. More specifically its aim was to find out how the pupils themselves discribe their physical environment, the reasons why there are scribble and damage at their school and how they are treated by the adults at the school bearing in mind the scribble and damage that occur. The study took place at one high-school in the southern of Sweden and the methods used were six qualitative interviewes, a minor inquiry in six classes, fotographing the physical environment and putting up scribble boards on the pupils' toilets. The physcial environment was quite bare and monoton and the pupils often felt bored by it. There were few places where the pupils liked being at.

During later years coaching has gained popularity. Coaching offers help to learn rather than to teach and enables optimal performance. The method that builds consciousness, strengthens choices and leads to change in the wanted direction, can deduce to some of history's most successful educationalists. A coaching area steadily increasing is business- and executive coaching. The overall purpose with this paper is to explain what coaching is generally speaking, with specific focus on business- and executive coaching.

Vad är det egentligen som gör att volontärer vill återkomma år efter år? I analysen i denna uppsats kommer vi till slutsatsen att det finns många faktorer som påverkar och bland dessa beror motivationen på vilket steg på Maslows behovstrappa som man befinner sig på just nu. Alltså är orsaken för att återvända individuell. För att undersöka frågan vidare genomfördes samtal med två fokusgrupper. Den ena bestod av elever från högskoleutbildningen Event management och den andra bestod av individer som alla hade volontärarbetat på återkommande evenemang men som inte läste Eventutbildningen.

I dagens samhälle har det blivit allt vanligare att anställda upplever stress på arbetsplatsen, på grund av att de upplever för mycket ansvar och krav på sitt arbete. Syftet med examensarbete var att undersöka på vilket sätt anställda upplever att långvarig stress på arbetsplatsen kan påverka deras hälsa och hur långvarig stress kan förebyggas. Den kvalitativa datainsamlingen användes för att genomföra studien vilket var stödjande för att förtydliga deltagarnas tankar och upplevelser kring fenomenet långvarig stress. Semistrukturerade intervjuer skedde. Intervjuer skedde med tre anställda från olika företag men med samma anställnings position.

Intro: 80 percent of the Swedish population own shares. This makes Sweden the leading country in private investment in securities. It can be difficult for the private investor to know where, when and which security to invest in. The strategies are as ambivalent as the stock markets fluctuations. If the investor prefers to refrain from investing money himself, there are brokers who carry out these types of services.

Elever i musikklasser med ko?rinriktning i grundskolan inga?r i en lokalt situerad musikkultur som a?r formad av traditioner med ro?tter i fo?rra seklets fo?rsta ha?lft. I denna tradition har konventioner om sa?ng med barn utvecklats. Undervisning i musikklasser sker i stora grupper men den enskilda eleven internaliserar kunskapen om att sjunga individuellt.