The purpose of this thesis was to examine how locally produced bioenergy may contribute to meet the climate target year 2050 in the municipality of Uppsala. The goal of reduced GHG-emissions from current 6,8 ton CO2-equivalents to 0,5 ton CO2-equivalents per capita and year, year 2050 is based on avoiding harmful penalties of an increased level of GHG in the atmosphere. By estimating available biomass in the county together with examining future technologies and emission factors for the substrates used, four possible future scenarios has been developed focusing either on electricity generation or production of biofuels. GHG-emissions of year 2050 have been calculated using the software LEAP. The conclusion is that bioenergy, depending on how it is integrated in the energy system, may reduce greenhouse gas emissions between 0.6 ton CO2-equivalents and 1.4 ton CO2-equivalents per capita or 12% to 25% compared to 5.5 ton CO2-equivalents in the reference scenario 2050. The greatest reduction is obtained if biofuels are produced in combination with energy efficient heat requirements in buildings..

Turbulens är ett väderfenomen som har orsakat många olyckor och incidenter. Speciellt farligt är klarluftsturbulens eftersom fenomenet ej är synligt för blotta ögat, samt att det kan uppstå mycket plötsligt. Mycket pengar och resurser har lagts ned för att ta fram system som skall kunna detektera och automatiskt rapportera turbulens. Denna uppsats beskriver kortfattat hur några av dessa system fungerar samt hur systemen skall bidra till att piloter lättare skall kunna förbereda för eller undvika turbulens. Uppsatsen beskriver system för prognostisering, detektering och automatisk rapportering av turbulens med tyngdpunkt på klarluftsturbulens..

Utvecklingen från jordbruks- och industrisamhället till det moderna informationssamhället har medfört stora förändringar i de sociala systemen vad det gäller grupprocesser och interpersonell dynamik. Sett ur ett komplexitetsperspektiv kommer de tätt kopplade agenterna i de tätt kopplade systemen att uppvisa interaktionsmönster, som skiljer sig från tidigare historiska epoker med dynamiska processer unika för tidevarvet. Syftet med detta examensarbete är att, via en litteraturstudie, beskriva och problematisera individens förutsättningar för identitetsbildning och ontologisk säkerhet i komplexa sociala system. Resultaten visar att komplexa sociala system kännetecknas av självorganisering, som kan resultera i att komplexa strukturer/egenskaper växer fram på en högre nivå. Den semi-autonoma agenten kan även konceptualiseras som ett komplext system, i sig, som påverkar, och påverkas av, de mångfaldiga komplexa sociala systemen.

Today the competition in the automobile industry is getting all tougher. The technology behind cars becomes more advanced. To get ahead of competitors car companies has to look into new areas of innovation.One important area is vehicle safety. Bigger companies have come so far in vehicle safety that difference between cars more depends on the car type (size) than the technology behind it.There is one area where vehicle safety that still has great opportunities for improvement, which is in active safety. The term active safety states that the car has the ability to identify treats and automatically respond to the treats.

This case-study examines the correlation between young men and democratic instability in group discussions with two analyzing methods in one. One part of the method used is deliberative democracy which aims to explain how democracy works within the frames of discussion in ordinary citizens groups. In this study the citizens is upper level secondary school students. The other part of the method used is the theory pulled by many scholars lately, the demographic impact on democracy. With these two combined in one this study compare the theory of young men as more active in political violence and as a destabilising factor of democracy on country-level with the results of the study in deliberative democracy in small group discussions.

Denna B-uppsats tar upp prestanda och återställning mellan två vanligt förekommande mjukvarubaserade RAID-system. Mjukvarubaserad RAID har blivit mer och mer intressant eftersom det är ett billigt och bra sätt att skydda sig mot hårdvarufel på hårddiskar. Tidigare har det inneburit prestandaförluster om man inte har använt en hårdvarubaserad RAID kontroller men med dagens snabba processorer är det inte längre så. Hårddiskar går för eller senare sönder och för ett RAID-system som ska vara igång tjugofyra timmar om dygnet är det viktigt att det även då fungerar med bra prestanda. Denna undersökning visar hur mycket sämre prestandan blir under sådana omständigheter samt hur lång återställningstid man kan förvänta sig på ett datorssystem uppbyggt av delar för hemmabruk.

This essay deals with classification of images using the subject classification system Outline. This classification system is used in regional museums and they do often have large collections of pictures. The regional museums have their main focus of culture history. The purpose is to look at Outline from four different aspects: 1. In what way is the system constructed looking at classification theory, 2.

In today?s history teaching in Sweden, role-play and historical re-enactment receive littleattention. Even though many students find history as a subject boring and irrelevant, verylittle is done to improve the mode of teaching. My theses is that this could be done bypresenting new ways of teaching and at the same time find a way to make more studentsinterested in history. The main aim is to investigate if there are ways to offer students anexperience of history by carrying out different interactive exercises with a touch of roleplayand historical recreation.

Because of new emission and on board diagnostics legislations, heavy truck manufacturers are facing new challenges when it comes to improving the engines and the control software. Accurate and real time executable engine models are essential in this work. One successful way of lowering the NOx emissions is to use Exhaust Gas Recirculation (EGR). The objective of this thesis is to create a mean value model for Scania's next generation EGR system consisting of a poppet valve and a two stage cooler. The model will be used to extend an existing mean value engine model.

Linux is a growing operating system in embedded systems. Today, Linux is not only in heavy servers but also in cell phones, PDAs, cameras and other devices running on battery power. While current technology is more energy efficient, more and more technologies are implemented into a single unit resulting in an overall increase of power consumption.Low power consumption is an increasingly important feature of a system today. Lower power consumption means lower costs, less environmental impact, and longer life for applications that runs on batteries.This work compiles methods to reduce power consumption of Linux systems. The work includes examining whether the available opportunities are platform-specific or of a more general nature.

The aim of this study is to illuminate social worker?s perception of social class within the Swedish social service system. This study therefor examine if social class contributes to the production and reproduction of the client and what impact social class has on the interaction between client and social workers. The study was conducted with qualitative semi-structured interviews with social workers from three different departments of social service. The theoretical approach is Yeheskel Hasenfeld?s theory about moral practices in welfare organisations, Michael Lipsky and Roine Johansson?s theories about client construction and Pierre Bourdieu?s class theory.

Warning-labels as a mean of communicating social responsibility in the store. Previous studies have shown conflicting results regarding the effectiveness of warnings-labels as a way of communicating health hazards to customers and making them more conscious about the risks and changing their behavioural intentions. The focus of this study is to shed some light on how the customers react to warning-labels with different levels of fear in the store atmosphere. The results of this study tells us that liking of the retailer and its image as being socially responsible is not enhanced by the usage of a warning-label. If the retailer decides to use a warning-label, in spite of this fact, the recommendation is to use a high level of fear if the purpose is to make the category seem more risky and make the customers want to change their behaviour.

Marknaden för mobila system har utvecklats enormt snabbt de senaste åren. Idag är det ett område med en allt större omsättning och det har vuxit fram som en helt ny gren inom Software Engineering. Utvecklare av mobila applikationer står ständigt inför en utmaning när det gäller att välja vilket mobilt system man ska satsa på när man utvecklar applikationer. Valet av system kan vara helt avgörande för om man hittar rätt målgrupp av konsumenter och därmed kan generera tillräckligt med omsättning för att driva lönsam utveckling av applikationer. Det räcker inte att enbart kolla på vilket system som har mest användare eller vilket system som genererar mest omsättning, utan man bör noggrant överväga de förhållande som gäller för just den applikation som ska utvecklas. Genom att följa denna guiden och överväga de olika faktorer som vi har sammanställt så kan man som utvecklare göra ett val som är baserat på aktuella marknadsundersökningar.

The Dairy business is changing a lot because of some scandals in the agricultural area for example the BSE crises in Great Britain. Because of the scandals the food industry and the farm association have created a certifying system; IP-Sigill Swedish standard system. We contacted Skånemejerier as they have been successful in the certifying area. They asked us if we wanted to do a study in the certifying area of dairy farmers. At Skånemejerier they gave us most of the literature in the area about certifying. The result of the study, is that we have taken up the most common remark?s. The most frequent remark is journal over routines in management of dairy cows on daily basis. Another remark of the study is that the frequency of the remarks decreases with greater production..

The aim of the study was to install a biogas system consisting of three tubular polyethylene biogas digesters at a rural household in Malawi and to evaluate the constructed biogas system with regards to relevant system parameters. The purpose was to evaluate if the technology is a possible solution to reduce deforestation and support Malawi in climate change mitigation and adaptation. The study was carried out in the southern part of Malawi in cooperation with the University of Malawi. Locally available materials were used to construct and install the system. Three different feed materials, cow, goat and a mix of cow and goat manure, were used in order to determine which one was best suited to utilise as a digester substrate. After the installation, measurements of temperature, pH, biogas production, biogas composition and system functionality were made. The results of the study show that a biogas system with tubular polyethylene biogas digesters can be successfully installed at a rural household and that the most suitable feed material is a mix of cow and goat manure.