The visual complexity in real-time applications, like computer games, is increasing with customer demands on vissual apperance. This trend is supported by even better graphics cards from the hardvare industry. This must be taken into consideration when the architecture of a new graphics engine is to be designed. The engines renderer is responsible of generating a picture of scene data. The renderer must cope with increasingly more complex scenes, and must be able to render them depending on available hardvare capasity.

The aim of this thesis is to examine how teachers use computer based assessment in their work and what user barriers they experience while working with computer based assessments. The result of the thesis is meant to provide an understanding of which factors affect the use of computer based assessments and how a company who provide computer based assessments applications can increase the rate of use amongst teachers.To investigate this, the author examined a company in Sweden who provide a computer based assessment application for both universities and high schools. The study was carried out at two different schools, a university and a high school, both located in Stockholm. In total nine teachers were interviewed. The author also conducted observations at the company whose computer based assessment application was examined.The author?s findings suggest that a lack of functions within the application and lack of costumer support from the company all negatively impacted the teacher?s use of the application.

A titania-supported nickel catalyst was prepared and tested in methanation in order to evaluate its catalytic properties (activity, selectivity and specially, activity loss), and compare it with an alumina-supported nickel catalyst.The titania-supported catalyst did not only show higher stability than alumina, but also presented a different cause of deactivation, carbon formation. In addition, a kinetic model was obtained for the titania-supported catalyst, and a study of the effect of different operating conditions (temperature, composition and partial pressures of synthesis gas and water) on the deactivation rate and carbon formation of this catalyst was performed.

This report presents a method for modelling a computer system from a security perspective. The questions that are going to be treated are:? What defines a secure system and how does the company relate to these factors?? What are the threats today based on hardware/software, human factors and company routines/policies?? What measures should be taken for the organisation to reach a higher level of security for their systems?? How do we develop a method for classification of security and what components should it contain?? What changes are reasonable and necessary with the respect to the company?s resources?The report has been done through interviews and analysis of existing systems on Fla?kt Woods AB. From analysis of material, the aspects judged relevant to the subject and to the company?s needs, have been compiled to a document.

Introduction: Mental illness is a public health issue which 20-40 per cent of the inhabitantsin Sweden suffer from. Many factors can lead to mental illness and because of that it isimportant that different organisations and professions collaborate in prevention and healthpromotion work. To develop the collaborative process by noticing difficulties and successes,documenting, follow-up and evaluation is of great importance. Aim: The aim of this literaturereview is to investigate which methods are used for evaluation of health promoting anddisease preventive collaborative projects, which focuses on mental health directly orindirectly, and find out what results these projects has revealed. Method: Literature reviewwith descriptive design.

I rapporten undersöks problemställningen ?Hur kan teorin om Gemensam grund och specifikt ?gemensamt avslut? bidra till en ökad förståelse för betydelsen av social interaktion i flexibel undervisning via datorförmedlad kommunikation?? i en fallstudie med fokus på videokonferenssystem vilka används i lärandemiljöer. Resultaten som framkom tydliggjorde att då ett sociotekniskt glapp uppstår tvingas studenterna att skapa alternativa strategier för att kunna uppnå just det här gemensamma avslutet. Därmed uppvisar också resultaten att drivkraften att uppnå gemensamt avslut inte endast är stark vid kommunikation som sker ansikte mot ansikte utan även vid datorförmedlad kommunikation. Fallstudiens resultat kan därmed ses som ett bidrag till grundforskningen i det att betydelsen av att uppnå gemensamt avslut vid datorförmedlad kommunikation uppvisas, vilket också förstärker betydelsen av Clarks (1996) teori om gemensam grund.

This work is about the rights of children, how students use social media and how effective teachers are using social media in their work against abusive treatment. The purpose of this work is to examine what students have rights in school, what and how students use social media and how schools and teachers are working to prevent the abuse that takes place over the internet and via mobile phones. The method used to investigate this is partly a survey of students in grades five and six at four different schools and interviews with four practicing teachers, working as a teacher in each class who made survey. My conclusion is that children have a variety of rights in school, and all schools and teachers are working on this through rules, values ??clarification and collaborative exercises. More and more younger children use out of social media, the survey shows that many of the students in grades five and six uses much social media.

This thesis paper presents experiences and views on collaborative writing from interviews with university students. Analysis of these interviews, focusing on problems with coordination and technological tools,  shows that problems to some extent can be avoided with knowledge of the tools used and knowledge of coordination..

Recent papers and bills from the Swedish Government deal with the possibilities  of giving all Swedish citizens the possibility of their own creative actlvities in the cultural sector. This work is about where such actlvities shall be placed in order to make them obtainable  for all. As an example of creative work this work takes computer-based music-making. At the public library in Odense, Denmark there is a weil functioning sound workshop where the public gets the opportunity of making music with some assistance from the staff. This work shows  that also in Sweden  the public libraries are the most suitable  institutions  for placing studies for computer-based music-making  for the public depending  on the public libraries'  traditions in adult education.

Introduction: Mental illness is a public health issue which 20-40 per cent of the inhabitantsin Sweden suffer from. Many factors can lead to mental illness and because of that it isimportant that different organisations and professions collaborate in prevention and healthpromotion work. To develop the collaborative process by noticing difficulties and successes,documenting, follow-up and evaluation is of great importance. Aim: The aim of this literaturereview is to investigate which methods are used for evaluation of health promoting anddisease preventive collaborative projects, which focuses on mental health directly orindirectly, and find out what results these projects has revealed. Method: Literature reviewwith descriptive design.

Welfare is every person's right. To create conditions for a good welfare it requires coordinated strategic interventions at national and local level. Efforts must be politically supported to be able to strengthen public health. Local welfare management is a measure used to control and monitor public health. The purpose of this study was to investigate local actors perceptions of collaboration in strategic public health efforts with local welfare management in a municipality in central Sweden.

The purpose of this study is to investigate what kind of idea a group of students in third grade, who attends a school in the Stockholm area, have on group work in school and how they think it affects their learning.The study is based on two questions:What opinion do the students have about group work?What opinion do the students have about how group work affects their learning?The method I have used to retrieve information has been to interview six different students, where the interviews were both individually and in groups. I started by interviewing students individually and then had a group interview. The idea with the group interview was to end it all with a brief discussion about the thoughts that came up during the individual interviews. I chose a selection of six students, four girls and two boys which they all were at the age of 9 and go to the same school.The socio-cultural and structural perspectives, is those theoretical perspectives that my study is based on.

Intranet is today a common technical groupware to communicate in many organisations. People can interact through the Intranet and communicate within the organization and get relevant information according to their workplace. It can be difficult to get everybody to use the Intranet as an information- and communication tool. This causes problems when people want to reach out with information. With these thoughts we entered our work at Luftfartsverket at Arlanda airport.

Denna studie och uppsats är en mindre del av DRA-projektet (Distribuerat RadiologisktArbetsflöde). Projektet har målet att samordna information för att skapa underlag förkunskap inom sjukvården i Västra Götalandsregionen (VGR). Detta är ett problem inomradiologin. Därför undersöks möjligheten att använda en Wiki för att stödjakunskapsdelningen och samordningen bland radiologer (röntgenläkare) inom Sahlgrenskasjukhus. Eftersom Wiki är nytt inom många verksamheter är detta intressant i dagslägetoch det är stort behov av forskning inom detta ämne.

A titania-supported nickel catalyst was prepared and tested in methanation in order to evaluate its catalytic properties (activity, selectivity and specially, activity loss), and compare it with an alumina-supported nickel catalyst.The titania-supported catalyst did not only show higher stability than alumina, but also presented a different cause of deactivation, carbon formation. In addition, a kinetic model was obtained for the titania-supported catalyst, and a study of the effect of different operating conditions (temperature, composition and partial pressures of synthesis gas and water) on the deactivation rate and carbon formation of this catalyst was performed.