Several technical solutions are ready to step forward as the new generation of propellant, and this report aims to explore the possibility of commercializing fuel cell cars. The report is based on current research and data from today's technology and engineering solutions that are estimated to be commercially realized before 2020.A mapping of today?s different fuel cell options has shown that the most suitable fuel cell option is the Proton Exchange Membrane Fuel Cell, which uses hydrogen as fuel. The report is focusing on a techno-economic well-to-wheel analysis of hydrogen and the energy balance and costs in a system perspective. The basis for this analysis consists of two centralized methods of production, steam methane reforming (SMR), and alkaline water electrolysis.

Rapporten som följer är en analys av en metod som genererar regler från neurala nätverk. Metoden heter VI-Analysis (Validity Interval Analysis) och är framtagen av Sebastian B. Thrun [Thrun]. VI-Analysis arbetar på det sättet att det neurala nätverket ses som en svart låda där endast de inputvärden och outputvärden som finns i nätverket används som underlag när regler ska genereras. Dessa inputvärden och outputvärden kommer sedan att få tillåtna intervall av VI-Analysis.

On a request from the water sewage plant Gryaab in Gothenburg a power quality survey was performed. The voltages and currents have continuously been sampled in the incoming 10 kV substation HSP01 from April-August 2008. Power quality measurements were also performed in Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of the induction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps to the plant. The reason for the latter measurement was due to registered negative transients each time the motor was connected to the grid. The cause of the transients could be explained by the coupling in the substation, the ageing of the motor which could result in damage of the bearings or resonance in the motor circuit which amplifies high frequency harmonics.

The development in electronics increases the demand for good design methods and design tools in the field of electrical engeneering. To improve their design methods Ericsson Microwave Systems AB is interested in using computer tools to create a link between the specification and the implementation of a digital system in a FPGA. Xilinx System Generator for DSP is a tool for implementing a model of a digital signalprocessing algorithm in a Xilinx FPGA. To evaluate Xilinx System Generator two testcases has been designed. The testcases are selected to represent the FPGA designs made at Ericsson Microwave Systems.

Today?s system to measure the volume in a tank consists of a vertically placed sensor. When a vehicle is tilted the level of the fluid might change and if the volume is calculated based only on the information from the sensor it could result in a incorrect value.This thesis exams a new method to calculate the volume in tanks by using sensor fusion to crosscheck the i formation from the level sensors when the vehicle is tilted. The information is then used to see if it is possible to identify the grade of tilt by the change of fluid level. If the grade of tilt can be measured then the volume can be calculated in a more accurate way.

Denna rapport avser att undersöka för- och nackdelar med att utveckla ett för ändamålet specialanpassat system eller utnyttja de standardsystem, som i det aktuella fallet tryckerikoncernen JMS redan äger och använder. Genom en mer noggrann definiering av ickefunktionella krav på bland annat användbarhet har en specialanpassad prototyp framställts. I projektet användes metoder för kravinsamling som ledde till en kravspecifikation och i sin tur slutade med en färdig prototyp. Prototypen jämfördes med två standardsystem genom användartester och intervjuer. Prototypen visade sig leva upp till de krav som upptäcktes.

AbstractThis paper discusses how system development methods today support communication between system developers and their customers and end users. Today there are many system development methodologies with different aims and emphases. It is difficult, however, to find among these methods those who promote good and effective communication with customers because so many of these are very technically rooted and not as much directed towards the soft aspects of systems development - i.e. Human aspects. Our own experiences tells that a simple interview can be initialized without us having an idea what to ask the customer about or how to structure it up - nonetheless it?s done, but the outcome is just chance.

This paper investigates the internal product costing system in one of the Swedish banks with the purpose to evaluate the quality of its product costs and possible implications on decision making. The study shows that the current system distorts product costs by, among other things, using relative allocation of costs and time and by allocating all costs to individual units of products. We therefore propose an alternative product costing system, which mainly draws on ABC theory but is also adapted to the specific needs of service companies and of the Bank. This proposal is intended as a solution in this particular case and not to be generalized in other contexts. We hope however to add to the understanding of why more complex costing systems, such as the ones based on ABC theory are, according to previous studies, not widely used in practice.

The guest harbor on Utö, Utö Gästhamn, is currently using electricity for heating all of the water used in the showers and taps. Because of the large amount of visitors, especially during the summer months, the hot water usage gets very high and that is also the case for the electrical bills. During the year of 2011 the cost of electricity for Utö Gästhamn reached a total of 257 500 kr. Out of these 257 500 kr approximately 142 000 kr, 55 % of the total cost, were because of the water heating.The report is the result of a cooperation with Skärgårdsstiftelsen, the Green Islands-project and Utö Gästhamn where the mutual goal is to dimension a solar energy system, to promote the sustainable development.Initially the different techniques for the solar energy system are researched. The techniques are plane solar collectors, evacuated tube collectors, pool collectors and photovoltaic cells.

This study aims to analyse how sex and sexuality are presented in the Buddhism and Hinduism chapters of religious studies textbooks for upper secondary school. The chosen textbooks are all linked to the new curriculum Lgr 11 which was implemented in the Swedish school system in the spring of 2012. The textbooks were analysed by using two methods; content analysis and discourse analysis. Content analysis was used to examine with which frequency sexes and sexualities appear in the textbooks, while discourse analysis was used to find what discourses surround the two concepts. The discourse analysis used two theories in order to contextualize the several discourses about sex and sexuality.

Knowledge is frequently discussed in modern society, and has been since ancient Greece. Our goal is to examine the content of two political documents with the desire to point out their visions about how the Swedish school system should be shaped, in relations to knowledge. More precise this essay is going to concentrate on two specific political parties, Folkpartiet and Vansterpartiet and their official programs on the subject school and education, to see what they say about knowledge. The choice is made on the basis that these parties political standings differ most from each other, in the left/right scale in politics. The qualitative analysis takes its main base from Aristotels concepts of knowledge; Episteme, techne and fronesis, and Bernt Gustavssons modern defenitions of them.

The intention has been to look at the school system in South Africa and specifically at arts and culture in grade 10 to 12. I have visited a number of classes and interviewed the teachers working at the art centre PJ Olivier in Stellenbosch. By doing this I wanted to get to know the system and to understand the intentions that the curriculum describes.I have all through the study related the areas I?ve looked at to the curriculum to see how well the intentions are implemented. I have also compared everything with the Swedish school system.The curriculum has good intentions but the country has a lot to do before they reach the goals with a school system where everybody is included and where there is ?ubuntu? (Zulu word for humanity or I am what I am because of what we all are).

This thesis aims to develop a control system for measuring electromagnetic compability (EMC). This has meant that a controller designed around an ATmega8 microcontroller has been manufactured and programmed. It has also meant the development of a comprehensive control software in the program MATLAB. The control system has been tested with satisfactory results and can now, monitor and control measurements of the EMC-type..

Having different kinds of literature is an important part of the education in school and schoolbooks, in shape of reading-books, are common in the first year of primary school. The texts pupils encounter in school are important for how they form their identity and thoughts about what is right or wrong and what is natural or unnatural. People of other ethnicity than Swedish, or with another skin colour than white, have often in the past been portrayed negatively in reading-books as if they are of less worth. According to the Curriculum for the Compulsory School System (Lpo94) the school shall act for understanding of all people and every person?s equal value.The study analyses how ethnicity is portrayed in reading-books for pupils in the first year of primary school.

In 1988 the Swedish Social Democratic Party decided to reform the tax system. In this essay I analyse the motives behind their acting on a basis of the party strategic theories of Przeworski and Sjöblom. The reform commonly referred to as the tax reform of the century, was although they considered that it was a high risk project pursued together with the Liberal Party. The new tax system implicated a less progressive income tax scale, actions against tax avoidance and raised value-added tax. The empirical analysis is primarily based on memoirs written by the key actors.