The systems environments of today are often distributed and heterogeneous. These kind of systems have several advantages but also disadvantages. One problem is how to keep them secure.The security problems in these environments are mainly due to the communication between the connected computers. It is relatively easy to tap these communication channels from information. There is also a need for the possibility to secure these channels from modification of sent information and to be able to verify the sender and receiver of information in a secure manner.

The aim of this essay is to examine three separate Swedish public libraries and their respective websites on the grounds of the usability sciences. I firstly had to summarize the main properties of the usability-field in order to gain an extended knowledge of its purposes and possible usage for today?s library systems. I was then able to apply the extended knowledge in the examination of the three library websites and the purpose of determining whether or not they were designed according to the standards set by the usability-sciences.Usability is a rather new science that deals with the dissection and examination of computer-based systems, in order to find the key components that make systems user-friendlier. With user needs being the main focus of its research, usability tries to meet all the different needs of the modern user and construct systems that are less system-centered and more user-centered.

This document is a summary of my work to create a project management system for a small firm working with computer graphics. The intention is to manage customers, projects, images and invoices in the easiest possible way. To make the system as flexible as possible a web-interface was chosen which makes it possible to access the system from any computer, making it independent of any particular operating system. The only requirement on the user environment is that the computer must have a connection to the Internet to be able to access the system. The different techniques that have been used to develop the project management system is primarily Ruby on Rails and a MySQL database. Although Ruby on Rails was completely new to me, I decided to use this framework instead of PHP, which I already have a good knowledge of, because of the benefits Ruby on Rails provide.

This essay aims to examine how science fiction literature is supported and made available for readers at four public libraries. Each library has its own opinion of what a public library?s role in society is, and that affects how literature acquisition and media exposure is done at that particular library. To explore this, the author uses a modified version of Elzinga and Andersson?s theory of traditionalism, pragmatism and emancipationism.

In the curriculum from 2011 for Religion in Swedish Upper Secondary School, a new content has been added regarding the relationship between religion and science. The pupils are supposed to acquire a view of how the understanding of religion and science can express questions concerning creationism and evolution. The purpose of this study is to identify how this relation between religion and science is represented in textbooks for the subjects of Religion and Biology and how pupils are encouraged to reflect on and discuss this relationship. The method of this essay consists of a qualitative content analysis of textbooks from both Religion and Biology. The result of this study showed an overall multifaceted picture of the relation between religion and science..

The last couple of years the use of Internet has changed in the way that the web pages can be affected of the person that uses them. Because of this dynamic Internet technology has emerged that makes it possible for a web page to receive information from a web browser. This information can then be used to affect the appearance of the page. PHP and ASP are two dynamic Internet technologies. They are integrated in HTML and are executed on the web server.

The purpose of this study was to examine how teachers practice Arne Tragetons theory of using computers as the first writing instrument in reading and writing development. We wanted to clarify how the work from using Tragetons theory was applied while investigating if and how other methods of reading and writing instruction were used. Our interest lays in how the teachers accomplished the knowledge of this theory and also how the choice of this approach came about. To investigate this we used interviews with a qualitative nature, where seven active teachers were interviewed. They worked in three different schools in years one to three, they were all women and had various long experiences of work on the computer writing tools.

The purpose of this study was to examine what students themselves think about using computers in school. The study was conducted in a school in central Sweden. The students in focus were students with reading and writing difficulties, dyslexia or language difficulties such as an other native language. A total of eight students were interviewed. The interviews were analyzed using thematic analysis.

The aim of my study is to investigate if and in that case how the writing process and texts written by students in the upper secondary school are affected by the writing tool; does it matter if they write their texts on a computer or by longhand? Another objective is to compare such an effect with the findings of previous studies performed on earlier generations of writers. The first part of my study was a survey. It showed that two thirds of the 67 students participating thought that they would have written better texts in the national writing test if they had been able to use computers. In the second part of the study each of the fourteen participants wrote one text on computer and another by hand.

Dagens samhälle strävar efter allt fler miljövänliga lösningar på energiförsörjning. Alla letar efter nya miljövänliga energikällor, men detta arbete går långsamt framåt samtidigt som behovet av energi ständigt ökar. Det är därför viktigt att man vidareutvecklar de miljövänliga lösningar som redan finns, så att de i så stor grad som möjligt täcker det ständigt ökade behovet. Fjärrvärme är ett kostnadseffektivt och miljövänligt alternativ som täcker en stor del av det behov av värme och varmvatten som finns inom både bostäder och industrier. Fjärrvärme har funnits i Sverige sen slutet på fyrtiotalet och har sedan dess vuxit, och täcker idag cirka 40 % av värmemarknaden i Sverige. Vi har i detta projekt studerat de system som idag används för övervakning och styrning av fjärrvärmenät. Vi har även satt oss in i hur det stora Absinthe-projektet ska göra energiproduktionen mer effektiv. Vår rapport är en del av forskningsprojektet Absinthe vars grundidé är att med hjälp av agentteknologi förbättra kontroll och övervakning av fjärrvärmenät. Vi har studerat de möjliga användarna av Absinthe-systemet, och utifrån deras behov och Absinthe-projektets grundtankar utvecklat ett användargränssnitt..

This thesis investigate how energy efficient measures has spread throughout the data centers in Sweden. These questions are put up against a theoretical use of such concepts such as green IT, technological evolution, large technical systems and knowledge dissemination. These theories are used to answer the questions that are encountered during the study, such as how green IT is approached, how big of a role environmental thinking has had in the evolvement of these new technologies. The study has been conducted in a longitudinal manner, it is an observation of the phenomenon that is data centers over a longer period of time. 23 non structured interviews spanning over 27.5 hours of recorded material have been conducted alongside a study of archived material.

This essay examines the narrative aspect of interactive fiction. The study uses Janet H. Murrays analysis of the digital environment and the properties of it as procedural, participatory, spatial and encyclopedic. From this, her three characteristic pleasures in digital narratives - immersion, agency and transformation - are examined from the perspective of interactive fiction. The study also examines Nick Montforts analysis of interactive fiction as a potential narrative and a simulated world or environment.

This Bachelor Thesis in the area of Computer Science and Work Science describes the process of design and development of an IT-tool between the municipality of Ron-neby and TietoEnator a development and consultancy firm, the Gothenburg office. The thesis focuses mainly on the cooperation between the consultant designer and the local municipal. Through cooperation, the organisation is incorporated into the tool and the tool is incorporated into the organisation. Concepts that are central in this thesis are design, cooperation and tailoring. A question raised is, if distance work and extensive cooperation might be a good way of working in the process of design and development, when the organisation is being incorporated into the tool.

Syftet med studien är att ta reda på vilka praktiska moment som genomförs i teknikämnet i grundskolans senare år, utifrån den gällande kursplanen i teknik. Studien bygger på enkäter, ställda till ett antal elever, lärare och science center i Sverige.Enkäterna tolkas utifrån en fenomenografisk ansats.Elevenkäten har gjorts för att få en inblick i hur eleverna ser på de praktiska momenten i skolan samt vad de i allmänhet tycker om teknikämnet.Lärarenkäten har gjorts för att få reda på vilka praktiska moment om görs samt vilken budget som finns att tillgå för teknikundervisningen. Dessutom har användandet av science centers beskrivits.Science centerenkäten har gjorts för att ta reda på hur ofta science center anlitas av skolor och vilka praktiskamoment som genomförs där.De slutsatser som kommer fram är att de flesta eleverna upplever de praktiska momenten som roliga samt att de flesta eleverna någon gång besökt något av de science center som finns i Sverige. I analysen av lärarenkäterna visas att 70 % av lärarna arbetar praktiskt trots låg budget. Utgångspunkten för upplägg av undervisningen är Lpo94 och ämnesintegration är vanlig.

This thesis investigates how different Linux-distributions installation interface relate to the ISO 9241 standard, parts 12 and 13, and how they relate to the installation interface of Windows XP, with the hypothesis: "There is a Linux-distribution whose installation interface according to applicable HCIrecommendations is equivalent to that of Windows XP." With the checklists provided by ISO 9241 an empirical study has been made, and so comparable measurements of how well the Linux-distributions and Windows XP follows the recommendations of the standard was obtained. By comparing the results from the tests similarities and differences between the installation interfaces can be deducted. As the result and the conclusion shows there are Linux-distributions whose installation interface, according to the applicable HCI-recommendations, are equivalent to that of Windows XP..