This master thesis consists of the creation of shock absorber models for percussive rock drills. A model of the rock was also developed. These models were connected to existing models of the rock drill to create a complete simulation of the rock drilling process.When the models had been created the rock model was evaluated by comparison with measured values from lab tests. The verified rock model was then used to evaluate the shock absorber models.Four new shock absorber concepts have been developed. Three of these have been modelled, while the fourth have only been sketched and described.The evaluation of the models showed the following:? Simulations of the single shock absorber don?t correlate to reality very well.

The aim of this thesis is to study the phenomenon of read/write OPAC by looking at how students at Pennsylvania University use PennTags in order to influence document descriptions in the library catalogue. The main questions to be answered are to what extent PennTags is being used in different subject areas and what users contribute to document descriptions through tagging in different subject areas. Studying the posts created by a sample of PennTags users from a quantitative approach I try to find out if there is reason to believe that the activity of users and users? possibility to make meaningful contributions are dependent of the subject matter being dealt with in documents described, as anticipated by the theory of pace layering. I find that user interest in influencing the library catalogue through PennTags appears to be low in general, with exception for in the subject areas of the main classes Language and literature and Social sciences in Library of Congress Classification.

The main purpose of this master thesis is to investigate how six elderly individuals, 65-75 years old, use and perceive Internet in their everyday life. The focus in this study is to enlighten elderly people as Internet-users.In 2010 many elderly people are still digital excluded. In Europe and in Sweden efforts are made to educate citizens to use the Internet, and that benefits of the digital society should be available to all.This study is based on the following questions: what made the informants take an interest in the Internet in the first place? How and for what purpose do they use it? And how do the informants regard to their own Internet usage and its importance in society?We interviewed six people aged 65-75 years old, using semi-structured questions. The data was analyzed by using the theory developed by Hektor concerning Internet and information behaviour in everyday life.

The aim of this literature review was to make a comparison between the feeding requirements of Swedish reindeer (Rangifer tarandus tarandus) and meat producing cattle (Bos taurus) within farming. Reindeer are an intermediate feeding type; they have the ability to adapt to short term seasonal changes in food. They avoid eating fibre as much as possible and display highly selective behaviour while foraging. Adaptation to harsh environments with a limited amount of food has made reindeer dependent upon easily digestible food and consequently their digestive systems are less capable of processing plants with high fibre content. Herding is an extensive system which requires a significant amount of land and labour and describes the reindeer industry.

Background: Trust has been a foundation of commerce since the very beginning. Trust can in the traditional commerce be built by face-to-face meetings, this is not possible at the Internet. Although, trust ought to be important even for the commercial business relation at the Internet and crucial for the consumer to use this communication channel. Purpose: The purpose of this master thesis is, from a consumer point of view, to study and analyse the importance of trust using e-services. Demarcation: The thesis is focusing trust using e-services, from a consumer point of view.

The purpose of this study was to examine social workers apprehensions about institutional placement of youths and what determines when these proceedings are used. When research not always shows that institutional placements lead to positive changes for youngsters, we wondered how social workers act on their assessment to institutional placement. We wanted to find out if the social workers meet any dilemmas along the way. To find out about that we used qualitative interviews with ten social workers, who worked in social service and came from different places in the southern parts of Sweden. To analyze our material we used the theory of human service organization and street-level bureaucrats work situation.

This paper examines the impact of the congruence between the background music and the brand image on the customer behaviour in retail store. The essay's hypotheses are built after the famous S-O-R-model that unveils if congruence background music affects the customers' emotions, brand image and response. The aim of the study is mainly to answer if the congruent background music stimuli in the retail store environment will affect the customer's emotions and if it will increase spent time and money. The congruent background music has been selected through two pre-studies based on consumers' brand image. A quantitative study has been conducted where triangulation was applied in a real store environment, where in total 201 surveys was collected for the main study.

Ten years ago the public computers with Internet access were introduced in the public libraries. The purpose of the public computers was to give the possibility of searching information. Along with the Internet came also communication media like chat and e-mail. This type of communication was a new function for the libraries and the reactions among the librarians were mixed. It has been a source of big frustration and attempts to block it has not succeeded.

The aim of this study was to shed light on the phenomenon of sex purchase amongst men from the perspective of professionals working at KAST*. Our main research questions concerned who the sex-purchasing men are, what their incentives are and furthermore how the professionals depict their work with these clients. In order to examine this we conducted three qualitative research interviews. The theoretical framework used to examine our results consisted of social constructivism and professional acting space. Main results show, contrary to research, that the ?typical? sex buyer does not exist, nor do specific motives.

Purpose: The purpose of this thesis is to examine whether some periods of declines in Swedish real credit can be explained by a credit crunch. Is it further possible, with these results, to do any conclusions about the banks behaviour in the on going financial crisis that has shadowed the country since 2007/2008? Method: A credit crunch is here defined as a period of supply-side restrictions on loans which doesn?t reflect the ongoing interest rates. By estimating a supply and demand function with a disequilibrium model the excess demand- and supply for credit due to different periods can be calculated. Conclusion: A credit crunch has been present during a period after the banking crisis of early 1990?s.

To United Minds, large-scale surveys are an important offering to clients, not least the public opinion poll Va?ljarbarometern. A risk associated with surveys is satisficing ? sub-optimal response behaviour impairing the possibility of correctly describing the sampled population through its results. The purpose of this study is to ? through the use of multivariate outlier detection methods - identify those observations assumed to be non-representative of the population.

The purpose of this Bachelor?s thesis is to explore the useability of bibliometric analysis on scientists of the humanities. This is accomplished by doing a case study on philosopher Slavoj ?i?ek. The work process and the results the case study is able to produce and the limits of these results are then analysed and discussed.In the case study all scientific articles in English published 1987-2010 citing ?i?ek were analysed.

This is a case study influenced by Grounded Theory and Symbolic Interactionism. Its focus is on a small group of pupils isolated both geographically and socially from the ordinary school. The composition is written from the children?s perspective. Observations and interviews have made it possible to study both the interaction between the children and also the adults, how the children are described by the adults working with them and what expectations they have on the children.In the light of earlier research, our case study can be seen as an example how the school is dealing with the children?s problems.

The Youth Outcome Questionnaire 2.0 Self Report (Y-OQ 2.0 SR) has been implemented in residential treatment centre in the Municipality of Örebro as a result of the strive for a more evidence-based working approach within social work. This study aims to examine how personnel and adolescents describe the treatment/counseling and support and the application of the Y-OQ 2.0 SR in the units. The questions cover the values the personnel and adolescents ascribe to the application of the Y-OQ 2.0 SR, if the result from Y-OQ 2.0 SR is congruent with how the adolescents have been affected during the placement, which obstacles and/or possibilities emerge in the management of the instrument and if there are any indications that the Y-OQ 2.0 SR is advantageous or disadvantageous in the treatment process. The study has a qualitative approach; four interviews were carried out with adolescents and five with personnel. The result shows that structure is an important component in attaining a change in behaviour.

The purpose of this study is that the stories provide insight into and understanding of institutionalized girls experiences and views on their schooling, and from their stories also explore how schools can create opportunities for students who challenge. An overriding purpose is also that the girls? life stories in the long run lead to a school developing work. To provide a better understanding of the girls, qualitative methods with a narrative approach have been used. In the theory chapter I have used, inter alia, George H.