Fotorealistiska 3d-bilder används idag inom ett brett spektrum av branscher. Framställningen av denna typ av grafik kräver ofta väldigt mycket datorkraft. Vid rendering med renderingsmotorer som använder sig av raytracing algoritmer är aliasing ett medfött problem. Lösningen heter anti-aliasing som arbetar för att undvika aliasing artefakter som jagged edges eller Moiré-effekter med mera. En del av anti-aliasingprocessen är supersampling som ofta kräver mycket datorkraft.

This thesis deals with options about information technology in education, the starting pointbeing a project in progress, namely Ostindieprojektet. This is the first collaboration betweenDatatorget and Stadsmuséet in Göteborg. The research is built on a phenomenological approach.The "backbone" information is collected from qualitative interviews, conducted mainlyduring March-April 1995.The questions for the interviews deal with the opinions about the reasons with Ostindieprojektetand IT in education, what conditions required to complete Ostindieprojektet and the ITdevelopment, the availability of the material, how IT-use can affect education, possible qualitiesfor the student with IT-use and how IT-use can affect the role of the school-1ibrary as ateaching tool.Some key subjects examined in the thesis deals with governmental investigations, viewsabout pedagogic and knowledge, problem-based leaming, computer-based education and therole of the school-library. The research shows that the interviewers have the same opinionsas the above mentioned key subjects. In completing the thesis we hope we have created aforum for critical discussion..

Stratego is a boardgame not very different from chess, that contains hidden information. Because of this, existing programs play at beginner level. The purpose of this thesis is to adjust a minimax algorithm so that it passes the demands of Stratego, and then build a Stratego agent around it. Tests with existing minimax algorithms leads to the development p-e-minimax. This algorithm uses two different values in its nodes to simulate the different information available to the agent and its opponent.

This master thesis was written in the purpose to study how the location and access to computers in the physical realm of the public library reflects the undergoing changes in the public libraries role in Swedish society. This study is done in a form of a case study of three small public libraries. All of them were in the process of transforming both their physical and virtual space. The thesis focuses on where in the library the computers are placed and how their location interacts with the libraries main tasks. It also focuses on the analysis of the relationship between these two elements and how that relationship reflects the alteration of the public libraries place in society.

I programmeringsvärlden har en ren, enkel och testbar kod en stor betydelse. Detta examensarbete avslöjar ett nytt koncept vilket kanske är den viktigaste upptäckten inom metodområdet på senare tid, så kallade Testdriven utveckling (TDD). Testdriven utveckling är ett sätt att utveckla mjukvara och det som utmärker den är att man först skriver ett test som inte ska fungera (röd fas), sedan skriver man en kod, så enkelt som möjligt, som gör att testet ska fungera (grön fas) och till slut ska man våga göra förändringar även om koden fungerar, om man är inte riktigt nöjd eller om man helt enkelt vill optimera sin kod (omstrukturera fas). Syftet med studien var att utvärdera vilka fördelarna och eventuella nackdelarna är med den här typen av mjukvaruutveckling, att motivera varför det är lämpligt att välja den och att visa hur man gör med hjälp av Java, JUnit och Eclipse. Material som användes i studien insamlades genom litteratursökningen och intervjuer.

Studiens syfte är att studera de bakomliggande sociala faktorerna som kan bidra till utvecklingen av datorspelsberoende. Studien genomfördes kvalitativt genom att intervjua fem personer som själva ansett sig vara datorspelsberoende. Tidigare forskning som berört detta ämne har handlat om hur användare påverkas av spelet, och inte vad som lett fram tillatt det intensiva spelandet påbörjades. Som teoretisk utgångspunkt för studien valdes den utvecklingsekologiska modellen som användes för att studera individen utifrån ett mikro-,meso-, exo-, makroperspektiv. Våra data visar resultat främst på en mikronivå där vi fann att en problematik på denna nivå fanns genomgående för samtliga informanter.

At SLU, Divison of Reproduction, Dept of Clinical Science, there is an ongoing project on the development and evaluation of new methods for the assessment of stallion semen quality. This EEF-study, which is a part of that larger project, has focused on the effects on motility and fertility of stallion semen of two different extenders and selection. Both an objective method and a subjective method for analysis have been used and compared in the study. The increase in the use of artificial insemination with cooled semen in Swedish horse breeding over the last decade is thought to play a part in declining foaling rates (Kareskoski et al, 2006, Kuisma et al, 2006). This calls for better evaluation methods of semen quality since cooling and transportation put higher demands on semen quality in order to maintain fertility (Aurich, 2005).

This paper is about the new programming language from Microsoft, C# (See Sharp) and the .NET Framework. They are still in beta-version, but will be released on the market in February 2002. This paper presents C#, not in detail but the characteristics that distinguish the language. A comparison is done with C++ and Java, since C# is most resembling to these languages. Both C# and Java have been developed from the mother- language C++.

To give a realistic impression in a driving simulator for nighttime driving, there are many challenging aspects to consider. One of the most important aspects is the illumination caused by the headlights of the own vehicle. To give a realistic impression there is the need to consider the characteristics of the headlight in use to be able to represent main and dipped beam, but also to represent different models and types of headlights. Another important aspect is the dazzling effects caused by the light cast by other vehicles upon the driver. These effects are not only important to give a realistic and visually appealing simulation, but also to simulate blinding effects which may affect the drivers ability to perceive the traffic environment to a large degree.

The goal of this master thesis project was to develop computer models of some plausiblepretreatment techniques and to assess the potential benefits/costs of using pretreatment andanaerobic digestion for waste management of organic waste from a system perspective. Forthis purpose a computer program called ORWARE has been used. ORWARE (organic wasteresearch) is a program for making life cycle assessments of waste management. As the mainpart of the project work the ORWARE system has been provided with three new models ofpretreatment techniques. The additions consist of: One model of pretreatment with ultrasound,one model of thermal hydrolysis and one model of a screw press.

The building industry are currently going through a huge alteration. The introduction of BIM (Building Information Modeling). Which also implements a lot of new ways of solving problems that building modeling can cause. This report is written for Uppsala University in cooperation with Temagruppen in Uppsala. However, it contains a comparison between two different systems that checks building models.

The aim of the study was to study the phenomenon of dyslexia on the basis of a literature study. I did a thorough exposition of what dyslexia is and its history and previous research in the area. Further I assumed two questions at issue which were What testimonies are there from the literature of how it is to live with dyslexia? and What learning styles are there for people with dyslexia? I have taken part of testimonies that are to be found about how it is to live with dyslexia according to the people themselves that live with it. In the second question at issue I move on to present a couple of learning styles that are used.

The question of excessive global energy use needs to be solved. All energy production and usage have negative environmental impacts, which are best solved by reducing energy consumption and by using energy more efficiently. A large part of the Swedish energy use is concentrated to the building sector and to reduce the total energy consumption real efforts need to be made to make buildings more energy efficient.The aim of this study was to investigate how energy is used in one of Göteborg University?s buildings and to find measures that can be taken to improve its energy efficiency. The chosen building Zoologen, is used for research and education.The main method of the study is computer simulations of the present building and of possible energy reducing measures to be made in the future.

This is a master thesis from Uppsala University in collaboration with B Locket AB (more known as www.blocket.se). B Locket AB is a large ad-company from Sweden, located in Stockholm.Search engines on the market today are becoming more and more complex. When they were first introduced, they only had one function and that was to produce search results containing the string that the user had typed. Today, users want it to be able to spellcheck, produce more results and sort search results on specific fields as well. Preferably, all these features should not affect the performance as a whole.The reason to why these demands have come up is that users are getting more and more used to internet services as a whole and they want everything to be as easy as possible.The user ability has become a substantially more important area in the computer industry and this needs to be taken into account when it comes to B Locket AB and its search engine.

Arcoma is a company that develops and manufactures X-ray equipment for hospitals. One of the most crucial components is the digital detector. Due to the high cost it is made removable so it could be transferred and used in other X-ray apparatus. The detector is placed in a so called detector holder. The current detector has a rectangular shape which sometimes requires a 90 degree rotation to match the shape of the patient.