Simulations of simulink models using Kalman filters are often very time-consuming. This problem depends mainly on the fact that the Kalman correction has to be performed at each sample instance through the whole simulation. The goal for this thesis work is to reduce that time-consumption for the filtering part (the integration partis treated in a complementary report) of a simulation. Furthermore a Matlab routine to perform parameter tuning and finally a graphical user interface is developed.The filtering part of the simulation in this thesis is based on an Extended Kalman Filter (EKF). The time optimization of this filter considers searching for the possibility to replace the today?s existing Matlab functions that is used to perform the filtering calculations.

This study is a semi-­structured, qualitative depth-­interview study investigating Swedish institutional investors' perception of the fact that companies purchase non-­audit services from its signing auditor and if they see this as a threat to auditor independence. The study focuses on independence in appearance rather than independence in fact. The study is based on the current media debate on auditor independence and aims to provide a deeper insight to enlighten legislators how users of audited financial information look at the problem. The study builds on agency theory's notion that there is an information asymmetry between management and shareholders, which the auditor is to reduce. The results show that Swedish institutional investors perceive that there is a threat to auditor independence when companies buy non­-audit services from its signing auditor.

This report describes an analysis of WebGL together with JavaScript with the aim to examine its limitations, strengths and weaknesses. This analysis was performed by building a 2D game engine containing some dynamic elements such as water, smoke, fire, light, and more. Different algorithms have been tested and analyzed to provide a clearer picture of how these work together. The report will go through the most basic functions of the game engine and describe briefly how these work.The result shows that JavaScript with WebGL can be considered to be a potent toolsets, despite the difficulties caused by JavaScript.In summary, similar projects can be recommended as Javascript and WebGL proved both fun and incredibly rewarding to work with..

In this master thesis a category of men otherwise often taken for granted is examined: noncriminal,non-violent men. With the help of in-depth interviews with young men who havepreviously lived a life with drugs and criminal behaviour, I examine the young men's identityand masculinity projects. To do this, I use theories by researchers R.W. Connell and MichaelS. Kimmel, among others.

The purpose of this study is to investigate the effectiveness of consumer generated advertising as a marketing tool to encourage online word of mouth. Subsequently, the researchers aim to examine if there are certain design factors in consumer generated advertising that influence the effectiveness of consumer generated advertising in encouraging online word of mouth. The study conducts a multiple case study of several consumer generated advertising campaigns. It consists of in-depth studies of these cases in combination with quantitative analyses of the encouraged word of mouth. The different cases are examined on several design factors that could possible increase the volume of encouraged word of mouth..

District heating covers around 80 % of the heating demand in apartment buildings and 10 % in single-family homes in Sweden. In the year 2010 the total input of energy to the Swedish district heating grids was about 70 TWh, which corresponds to 11 % of the total energy input to the whole energy system in the country. Through the combined production of heat and power the CHP-plants often reaches an efficiency of 90 % from energy in the fuel to produced heat and power. In order to keep the efficiency high it is important for the owners of the plant to have good knowledge about the plants performance at different operation points. Strängnäs Energi AB initiated this diploma work together with FVB Sverige ab in order to come up with a program for short term planning of the production of heat and power at the company´s CHP-plant.The work consists of three main parts.

This paper examines the film distribution and exhibition sector in Europe. The general analysis of these sectors? situation was made. Moreover, the comparative and more in depth analysis of three countries by the Porter?s five forces model was made; These were United Kingdom, France and Denmark.

Today when new and harder demands on CO2 emissions are developed, vehicle manufacturers must work to develop new engine solutions to new kinds of fuels to replace fossil fuels. A fuel that could be applied is hydrogen. When hydrogen is combusted only water vapor occurs. Hydrogen is known to be explosive and flammable. These properties are both good and bad for combustion.

Estimation of the variation in the integrated hydraulic conductivity around the Tunåsen infiltration facility - An investigation of the effects of uncertainties in existing informationAlmost half of Sweden?s drinking water volume is produced from groundwater. The main fraction of this is extracted from eskers, some of which allow for very large extraction rates. Despite this, the groundwater volume is not sufficient in some areas. This has led to an extensive use of artificial recharge.In Uppsala, the total volume added through artificial recharge is divided between four infiltration facilities.

This thesis adresses the subject of stormwater management and the problematic with stormwatermanagment and landuse in the compact city. The thesis research different solutions in stormwater managment and how to implement them in the context of the compact city. And at the same time preserve and make good recreaational places and keep quality green land per capita. The thesis also analyses risks and problems that could effect the environment with focus on stormwater managment and hov to minimize these problematic factors an create a good environment. In an urban context where the water has a natrual place, and is used as a asset.

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.

The purpose of this investigation was to find out more about students? spontaneous ideas about properties and transformations of matter. Examples of matter chosen are such which students know about from everyday life and focus is mainly on the questions if students know that all matter has weight and that matter is preserved in transformations.The method used is semi structured qualitative interviews with individual students. Different experiments were carried out together with the students who afterwards were interviewed. However, the students show varying answers and no generalizations can be done.

Background: The meeting industry has had undergone a extensive changes due to a number of factors. The globalization has meant that supply increases and congress organizers have more options to choose from. Development in communications, for instance internet, means that meetings can take place without a physical presence. Congress organizers as clients have also changes. Stockholm as position as a leading city to hold congresses in has also changed for the worse, in 2006 Stockholm dropped of the top-10 list.

Since 1998, the Swedish preschool has its own curriculum and with this the preeschool became the first step of a lifelong learning. The aim of this study was to explore how preschool teachers perceive their work before and after the Swedish curriculum was inserted. A qualitative method was used in this study. Four different in-depth interviews were conducted with preschool teachers, all experienced working at least before 1993. The curriculum theory and curriculum history were used to analyze the empirical data.

Miljonprogram is a Swedish building program from 1964 to 1975. During that time about a million homes were constructed. Now, almost 50 years later, they are in desperate need of renovation. In order to fulfil the Swedish environmental objective to decrease energy consumption 50 per cent until 2050, considerable housing stock built under the Miljonprogram has to be renovated.Focus in this thesis is on the building services and theirs profitability that can decrease energy consumption in households build during the Miljonprogram. Building construction is not considered in this report.