As a consequence of increasing wind power installations in the Nordic grid the last years, the need for regulating power has become larger. In the Nordic grid, regulating power is mainly provided by hydro power. One part of the regulating power is called frequency control, which ensures that the grid frequency is stable and close to 50 Hz.However, setting the turbine into frequency controlled operation may cause stress and wear of the components in the mechanical control system. Frequency controlling implies large and frequent servo forces and longer travelling distance of the sliding bearings in the Kaplan turbine.Based on one selected Kaplan turbine, Selsfors G1, measurements and MATLAB calculations have been performed in order to determine forces and movements of the linkage system. With these forces and movements as input, stresses and fatigue have been determined as well as sliding distances, bearing pressures and wear of bearings during a typical lifetime of 40 years.The results indicate that no severe wear exists on the bearings during 40 years of service.

The sun is an endless energy source and the heat it produces can be used to heatup our homes. This technology is relatively old and was introduced in the late70-s. There are two kinds of solar collectors that are most frequently used todayand these are plain solar collectors and vacuum solar collectors. The plain solarcollectors are the once that are used the most but the vacuum solar collectorshave increased more as a percentage the last couple of years.The biggest question asked regarding an investment in solar heating is if theplant is economically profitable. This question has no direct answer because itis dependent on a couple of prerequisites.

This essay comprises a study of the bridal crowns of Tjust, with respect to their national history, concept and aspect of mythological symbol. The tradition of bearing the parochial bridal crown is closely associated with religious medieval politics, and has also come to include elements of superstition and folklore. Attention is paid to these aspects dealing with the position of the bridal crown within current forms of tradition and culture and the impact on brides of this day and age. As the tradition of Church-owned bridal crowns is intrinsic to this country, and especially in the area of which Tjust is a part, possible solutions to the continued tradition are investigated..

The librarian profession is dominated by women. The aim with this essay is to find out howmen and women in this field get on together, and how they experience their psycho·social work situation bearing this in mind. Are there any advantages or disadvantages being a woman or a man in this profession? What do the librarians think about the future? Men and women working at five different public libraries, where the domination of women is greatest, have been interviewed. The essay is based on their opinions and experiences.The female and male librarian get on well with each other and have a good cooperation.There are not many advantages or disadvantages depending on the sex in the profession, but the image, status and salary would probably be better, if there were more men in the profession.

The purpose of this thesis is to describe the marketing channels Gen Y is exposed to, uses and is influenced by. The thesis also seeks to comment on whether there are other factors, in addition to the marketing channels described, which influence Gen Y in their consumption choices. In addition, we intend to develop knowledge about whether the generalizations of Gen Y have any bearing, or if they are only assumptions with no support. From the empirical results, we have seen a consensus among the respondents concerning which properties they want commercials to hold, but they differ in their opinions regarding which marketing channels the commercials should be distributed through. Overall, the respondents want the commercials to be entertaining, relevant to their interests, and they want to be able to choose themselves whet­her to take part of them or not..

The Blötberget deposit is situated in the north-western part of Bergslagen. The mineralization is an apatite-iron oxide ore of Kiruna type. In Bergslagen the apatite-iron oxide ores occur along a zone from Grängesberg through Blötberget to Idkerberget in the northeast and they represent the largest and the most important iron oxide deposit in Sweden, south of Norrbotten.Different REE hosting phosphate phases has been studied by optical microscopy and analyzed by EDS attached to an electron microscope.The key minerals other than iron oxides are apatite, monazite and xenotime. The relative concentration of the REE-bearing phases differs from the other apatite-iron oxide mineralizations in the area, for example Grängesberg, by a higher concentration of xenotime and lower contents of allanite..

The Swedish Transport Administration manage nearly 4,000 railway bridges in different condition and age around the country. These bridges is in constant need of maintenance and requires continuous inspections. This thesis is designed as a damage investigation on a single-track railway bridge south of Solvarbo in Säter municipality. The railway bridge is in operation and serves over 10,000 trains a year, everything from speed trains to freight trains. The bridge is built as a beam bridge, simply supported over a road.

AbstractWhat do the pupils really learn in school? What do the pupils know before they begin schooland what knowledge do they have when they graduate form 5 and should have achieved thegoals? I chose to interview some pupils in the end of nursery school and some pupils in theend of form 5. To limit myself I chose the subject space, because I think most pupils thinkthat space is an interesting subject. The result of my examination was that pupils in nurseryschool have many different thoughts and previous knowledge about space, often on the basisof what they have seen themselves, and that some of the pupils in form 5 have some moredeveloped knowledge while some pupils still got the skill as a nursery school pupil. Myexamination shows that some pupils have learned surprisingly little, bearing in mind that theyhave been in school for five years..

This report describes the construction and development of a control box, which is a tool for testing and verifying a certain model of Rapid?s built in staplers (model A6102). Basically the function of the control box is to interpret any errors that may occur in the stapler and to make it possible to test fire the stapler.The control box should be able to communicate with the stapler using a specialized communication protocol. The different data such as errors, firmware etc. from the stapler is presented in plain language on a display.

At the beginning of 2011, Sweden started using the European rules for structural design, the Eurocodes, instead of the previous national rules. In both the previous rules and the Eurocodes, it is possible to dimension concrete columns using tabled values. However, the required cross section measurements have increased considerably. Moreover, it is possible to dimension concrete columns using calculations, however, this is unusual.The development of a fire in a fire cell can be divided into the growth stage, the fully developed fire and the cooling phase. The duration of each phase, as well as the temperature, is dependent on a number of factors, e.g.

 The purpose of this thesis was to explore how the ideological self-image of the biggest Swedish governmental party, Moderaterna, has developed between 1993 and 2011. The second purpose was to compare this development on a fundamental ideological level, with development on the operative ideological level. This was to be made by qualitative analysis of the party?s ideological programs and election manifestos. Hopefully this would expose a pattern of the party?s ideological development. The findings of this thesis however, suggested that while the ideology on the fundamental level had radically changed, the ideology on the operative level has been characterized by continuity.

In this essay I employ memory theories to examine Absalom, Absalom! by William Faulkner. How are the memories depicted and how do they function in the novel? What are the characters ?allowed? to remember? Scholars that have written about William Faulkners usage of memories and narrative time in his novels, often claim that they together represent and create a sense of determinism and/or fatalism. Even though I agreed with that opinion, regarding time and memory in a lot of Faulkners novels, I wondered if these features in the text might not represent/mean something more, beyond that. One scholar have expressed the view that William Faulkners characters resemble blind marionettes of Destiny. I instead claim that the characters themselves, via their individual memories and temporal relations, create an internal determinism, connected with cultural memory, norms and traditions. I try to examine both the individual memories, as depicted in the novel, and the novel in its entirety, using different memory theories and narratology. .

This master thesis is an attempt to study the interface in itself, where the human meets the machine and the problems that can arise. I study a particular interface, namely the OPAC of Libra III. In 1999 IFLA presented recommendations for what an OPAC shall contain, and in one part of my master thesis I compare Libra III with these recommendations from my opinion. In another part of my master thesis I make an investigation where I let five by me chosen persons answer some questions from me, both by doing and verbally. I draw the conclusion that Libra III follows most of the recommendations of IFLA in a sufficient way.

Communication is a part of everyday life. The more sensitive information we handle, the more interesting the question around security of your information becomes. There are two ways of handling security around the information you want to communicate, either you control the means by which you are communicating. Or you control the way you communicate, making you able to use existing communication channels. Existing methods within cryptography enables two parties to communicate information securely.

Background: Budgets has always been a main factor for the management of organisations. Yet, lately has the role of budgets been increasingly questioned. But how is an organisation managed without budgets and what other alternatives can be used? And can these instruments work more effective?Purpose: The purpose of this essay is to describe how non-budget management distinguish compare to traditional management and how to design an effective non-budget system of management. Furthermore we intend to explain the reasons to such management and to present a model for how such a management can be performed.Research method: Empirical material has been performed based on seven interviews with persons within Svenska Handelsbanken.