In this project we have used the theory of analytical mechanics to derive equations of motion for complex mechanical systems in order to study their behaviour over time. Even if the theory provides powerful tools to tackle tough problems which would be very hard to solve by methods of Newtonian mechanics, you are still relatively limited without running any computer simulations. One realises that in a faster rate it will be an incredibly difficult task to find an analytical solution when the degrees of freedom increases. Even if one would succeed to derive the equations, one still has to solve them to get the information of the systems behavior. Of experience one knows that the equations in general are nonlinear and hence must be integrated numericaly.

AimThe purpose of the study was to investigate how upper secondary school students experience performance demands during their physical education and health classes (PE-classes). The questions were as following: Are there differing perceptions between the sexes whether students experience performance demands? In what situations do the students feel that the demands on their performance are high during PE-classes? Do the students experience of demands on performance differ whether the physical education and health teacher is male or female? Do students feel unfairly treated by the physical education and health teacher during PE-classes?MethodSeven upper secondary schools in Stockholm?s administrative district were randomly selected to participate in the survey. The principals were contacted for further information and to set a date for performing the survey. The project leaders were present during the days the surveys were taken by students in the social science and natural science programs.

In this project we have used the theory of analytical mechanics to derive equations of motion for complex mechanical systems in order to study their behaviour over time. Even if the theory provides powerful tools to tackle tough problems which would be very hard to solve by methods of Newtonian mechanics, you are still relatively limited without running any computer simulations. One realises that in a faster rate it will be an incredibly difficult task to find an analytical solution when the degrees of freedom increases. Even if one would succeed to derive the equations, one still has to solve them to get the information of the systems behavior. Of experience one knows that the equations in general are nonlinear and hence must be integrated numericaly.

Detta kandidatarbete undersöker science fiction, en av de större och vanligast använda genrerna inom medier såsom spel, film och litteratur, genom att studera dess undergrupper, de så kallade subgenrerna. Dessa är specialiserade versioner av genren i fråga och använder den inom vissa förutsatta ramar, exempelvis hur samhället ser ut eller vilken typ av teknologi det huvudsakliga fokuset kretsar runt. Genom att studera hur subgenrer är beskrivna i The Encyclopedia of Science Fiction kan man avgöra att de består av sex punkter: plats, tidsperiod, karaktärer, teknologi, narrativ och visuell estetik. Dessa punkter har använts som ramverk för att utveckla en ny subgenre; Mystech, där scenarier utspelar sig i vad som kan ses som en typisk fantasyvärld med magi och monster, men där dessa egentligen bara är teknologi majoriteten av de påverkade inte förstår sig på. För att demonstrera Mystech har två olika miljöer utvecklats, både i bild och skriven form.

Grafiska dokumentgränssnitt används av de flesta datoranvändare. Det finns i huvudsak tre typer av dokumentgränssnitt; MDI (multiple document interface), SDI (single document interface) och TDI (tabbed document interface). I ena halvan av arbetet har dessa tre analyserats utifrån en rad faktorer med målet att se om någon modells fördelar väger över de andras och om man kan skapa några riktlinjer för när det är bäst att applicera respektive modell när man utvecklar en ny programvara. Analysen är baserad på litteratur samt kvalitativ enkätundersökning och programtest. Andra delen av arbetet har ägnats åt testa om det går att programmera så att slutanvändaren kan välja den modell han eller hon föredrar.

Vi har under tio veckor producerat en del av Peter Martinssons film Eve. Vi har stått bakom en stor del av den tekniska biten. Vi har inte deltagit något i idéarbetet och idén bakom filmen, däremot har vi påverkat det visuella resultatet genom att göra stora delar av bakgrundsmaterialet. På så sätt har våra idéer och vår konst fått en stor del i filmen. Genom detta arbete har vi velat utveckla våra kunskaper främst i programmet AliasWavefront Maya, men även rent estetiskt. Målet med arbetet var inte att bli klara med filmen, utan att lära oss av produktionsprocessen. Vi har varit tvungna att anpassa oss i vårt arbete till det speciella utseendet som filmen har.

Facilitated by the breakthrough of the internet, new ways of organizing internet-based projects that harness the power of the crowds are becoming increasingly common. Today there are ways of using the crowd as paid labour, as funders of your new project ventures and even for helping scientists doing science. Staying true to its traditional principles of objectivity and trustworthiness while asking the crowd to contribute, crowd generated ?Citizen Science? does not provide even the slightest amount of pay in exchange for the time and effort put in by their contributors. Surely there can not be many people willing to do such a thing voluntarily? Actually, practice is showing the exact opposite with contributions counted in their millions among the more popular Citizen Science projects.

In Sweden there is a long ongoing discussion about computer and cellphone usage during lectures in school. The discussion has mainly covered elementary school up to college students, but this topic is at least as relevant for university students. Today cellphones are so advanced; you can do everything with one that you previously only could do with a computer, the difference is that everyone is carrying one with them all the time. This study shows how concentration during lectures is affected by the cellphone accessibility and usage. With this study we want to find out how university students perceive cellphone usage affects their own concentration during lectures.

The information market is constantly changing. With new and improved information technology more people get access to more information faster. However, the number of people educated to handle information also increases. Business intelligence has for a long time been a well-known tool for companies to be competitive. Because of the increased access to information the competition between companies has intensified and more people have become aware of the advantages of business intelligence and how it can help them compete.

Användandet av mobiltelefoner har blivit en del av vår vardag i dagens samhälle. Mobiltelefonindustrin är en miljard industri med stora företag som Motorola, Nokia och Sony Eriksson. De senaste åren har det även kommit in nya aktörer på marknaden som Apple med sin iPhone och Google med sitt mobiltelefons?operativsystem Android. Dessa aktörer har kommit ut med flera nya mobiltelefonmodeller som använder sig ut av pekskärmar.

Humanity has always dreamed about a better world. These dreams has manifested themselves in the vision of Utopia - the good place, but also the non-existing place. Up until World War II man still wrote optimistic descriptions of this ideal world, and spread the idea through literature. In the aftermath of the atomic bomb and under the influence of the cold war, these publications seized to surface in literary surroundings. Despite this utopia did not die - it has only changed.

This master thesis project at KTH is performed in the Mechanical and Aerospace Engineeringdepartment at University of Florida (UF). The thesis is a small part of a gas turbine researchproject where a vapour absorption refrigeration system (VARS) and a high pressure regenerativeturbine engine (HPRTE) are integrated together. The main objective is to build a computermodel of the VARS. The computer model is supposed to be used to analyse the off-designperformance of the VARS and should also be easy to integrate as a subroutine in a more complexsystem model. To model the VARS some knowledge of the absorbent/refrigerant mixture had tobe well known, in this case a mixture of ammonia and water.

The thesis describes the following main question: Will the administrative labour during football tournaments be made easier with the help from a mobile web service or will it convey to unnecessary extra work? To be able to give a good and qualified answer to this question, the thesis will in the beginning describe how the technique for such a system might look like and also describe the existing administrative moments during a football tournament, this is too give the reader a deeper understanding for further reading. The thesis then goes on to describe a concrete system which is tested on three football tournaments. On the basis of the tests, interviews and through analysis of these the thesis will be able to answer our questions. The result which we present in the thesis have unfolded through testing of the system on three chosen football tournaments. The differences in way of labour pre and post the system have been analyzed and through interviews the value of these changes have been assessed. The results achieved in the thesis are as follows, the presented mobile web service does not only decrease the total work effort made by the tournament officials it also speeds up their work.

Failed system development projects are a common sight within the IT-industry. During the last ten years we have seen several more or less disastrous high profile projects being reported in the news. One aspect that might hold some of the responsibility for these failures is the fact that more organisations are knowledge intensive which makes their work processes difficult to capture in computer systems. How requirements engineering is handled becomes even more important in these cases, where processes are unpredictable and rely on individual judgement and knowledge. In this study we have examined the challenges of developing systems for knowledge intensive businesses through a method of qualitative case study of a university laboratory.

Dagens utveckling av mjukvara går snabbare och snabbare samtidigt som mjukvaran blir allt mer komplex. Att under dessa omständigheter kunna bibehålla en lika om inte högre kodkvalité är en utmaning. På UIQ bestämde de sig för att undersöka om ett automatiserat unit test kunde hjälpa dem. Metoderna för att komma fram till resultaten i denna rapport har varit intervjuer, en enkät, intern information och litteratur så som forskningsartiklar m.m. Denna rapport är en utredning av automatiserade test, vad man bör tänka på, vilka fördelarna är, vilka testfall som är möjliga att automatisera med mera. Rapporten kommer även att presentera grunderna i testning av mjukvara, en introduktion till eXtreme Programming och Test-Driven Development samt hur testningen utförs på UIQ idag. Då jag kom fram till att ett automatiserat unit test skulle passa sig bra på UIQ kommer jag i slutet av denna rapport presentera ett implementerings förslag. Man bör även införa en test driven utvecklings metodik för att säkerhetsställa att det kommer att utvecklas automatiserade testfall..