The purpose of this master thesis is to implement and validate a Power System Stabilizer (PSS) to a generator at Trängslet hydropower station in Dalarna, Sweden. Problems with local rotor oscillations can occur at the hydropower station when power is transferred on a new power line (130 kV) from Northern to Southern part of Dalarna. To ensure good operation properties on this power line Fortum Generation AB and Fortum Distribution AB wants to activate a PSS on a generator.There have been investigations in which situations and what equipment that contributes to rotor oscillations. When this is known the PSS is tuned to damp these oscillations by choosing a good set of parameters. The most important parameters for good performance are to choose amount of gain and phase compensation.

 Abstract Study: Degree project in teacher education, Advanced level, 15hpUniversity of SkövdeTitle: A study on students' self-esteem Students' statements on the encouragement and support in a sixth gradeNumber of pages: 26 pagesAuthor: Marie Agapuu & Ingrid SvenssonTutor: Anna-Stina AhlrikDate: January 2009 Keywords: Self-esteem, encouragement, support  A good self-esteem of students will often coincide with good academic performance, but it has also shown that students do not have low self-esteem due to low academic performance. Students' self-esteem is both a complex topic and concepts. We want this study to draw attention and to discuss teachers' efforts to enhance students' self-esteem in school. Encouragement and support of the school adopted in the study contribute to strengthening students' self-esteem. The study examines whether and how nine pupils in a sixth class is that they get encouragement and support of / from their teachers in school subjects and in learning situations.

The interest in tiny wireless applications raises the demand for an integrated reference oscillator with the same performance as the macroscopic quartz crystal reference oscillators. The main challenge of the thesis is to prove that it is possible to build a MEMS based oscillator that approaches the accuracy level of existing quartz crystal oscillators. The MEMS resonator samples which Philips provides are measured and an equivalent electrical model is designed for them. This model is used in the simulations of the Pierce oscillator and the transresistance amplifier oscillator that are evaluated in this thesis. Finally the Pierce oscillator is implemented in the A BCD2 process and manufactured at Philips Semiconductors in Nijmegen, The Netherlands.

Since a few years back television has been on a verge of an enormous digital change. Web-TV is now growing at an incredible rate and is said to completely change the way we consume TV. The purpose of this essay is to determine and gain an understanding of how representatives of the broadcast industry looks at the phenomenon of web-TV and especially the different kinds of online video services and how they believe this will affect the television. Methods used are qualitative interviews which we compared with previous studies on the subject and acknowledged communication theories. The respondents were people with good insight and understanding of the media and TV industry.

This bachelor thesis examines the relation between countries? degree of economic freedom and their economic performance. Economic freedom as a concept is defined as the degree of market economy within a nation.The variable of measure that is used is the Frasier institute Economic freedom of the world index (EFI). The paper is built upon the Solow growth model and is extended by incorporation of additional variables; among which of course economic freedom. The study is performed through regression analysis, based on the neoclassical model both on rich countries, poor countries and on all investigated countries.Two investigations are performed: i) the impact from economic freedom on countries level of GDP per capita and ii) the impact from economic freedom on the growth rate in GDP per capita.The finding is that economic freedom can be seen as a relevant determinant of differences in GDP per capita growth rates between nations.

One of the biggest changes which have affected businesses during the last ten years is the accelerating speed at which Internet technology and e-commerce has developed. If Internet earlier was used in the purpose to entertain it is now accepted as an essential business tool and companies are investing more of its resources in e-commerce activities. Everyone ?has to be on the net? today but that implies a challenge in matching e-solutions to the company?s business goals. It is necessary to have clear goals, carry out research and plan a strategy in order to operate an optimal e-commerce website for the company?s needs.The purpose with this dissertation was to see how well companies adjust to new demands in the rapidly changing e-environment.

Something that is common to all people is that everyone is in need of food. However, people may differ about the choice of brand and the motives for the purchase. In the essay enables the reader to study if the purchasing behaviour may differ between the sexes, which also respond to the essays purpose. The purpose of this essay is to identify and describe any differences in buying motives of convenience goods between the sexes in a student population. In order to answer the purpose of the essay a study on ICA Maxi were conducted on 20 students from the University of Karlstad, ten women and ten men.

The objective of this study is to examine the sustainability of recovering industrial wasteheat from several heat sources in a foundry constructed in a plant belonging to ITT Waterand Wastewater in Emmaboda, Sweden. A triple bottom line perspective will be appliedto achieve this objective. The triple bottom line approach takes into account ecologicaland social performance in addition to financial performance. The technology forrecovering the waste heat is a Borehole Thermal Energy Storage (BTES) which is aconstruction consisting of 140 vertical boreholes, 150 meters deep with an internal spaceof four meters.The calculated amount of energy for storage is approximately 3800 MWh annually. Ofthis amount 2500 MWh are expected to be utilized, while storage losses accounts for theremaining part.

Visuella vägledande element kan höja eller sänka en spelupplevelse. Därför har vi gjort en studie kring hur man kan uppnå intuitiv visuell navigation med fyra beprövade visuella vägledande element, nämligen ljussättning, färgkulör, färgmättnad samt objektplacering. Dessa element har använts för att skapa ett visuellt språk i en bana som vi har låtit ett antal respondenter spela och simultant kommentera. Resultaten har varit som väntat, att ljussättning fungerar som det starkast vägledande elementet, samt att respondenterna reagerade på, samt vägleddes av, nämnda element..

As a result of global competition, companies within the automotive industry are required to improve their production systems to achieve sustainable and competitive production. To attain operational excellence, companies have adopted concepts like lean and World Class Manufacturing (WCM).In order to deliver, companies need to increase the availability and reliability of production equipment. This demands focus on both operational and strategic maintenance, and efficient equipment acquisition and management. The main objective of this thesis is to identify processes and success factors that are necessary for improved maintenance performance. By conducting a case study and by performing a literature review, the following has been studied: 1) how companies within the automotive industry work with maintenance and maintenance strategies, 2) implementation of maintenance strategies, and 3) new acquisition and spare parts management for maintenance. The results show that basic maintenance concepts and related terms are well defined in the literature.

More efficient energy consumption is essential to secure a sustainable future, not least within the building and real estate sector which answers for approximately 40 % of the EU countries total energy consumption. One part of EU: s work to reduce the energy consumption is the directive on energy performance of buildings which among other things have lead to stricter demands on energy performance in new and renovated buildings.One of the difficulties with making buildings more energy effective is that it often demands big investments and although it results in lower operating costs the extent of these savings and therefore also the repayment time can be difficult to decide beforehand. To make it interesting for property owners and also tenants to invest in energy efficient buildings powerful incentives are needed. Favorable loans to energy efficiency projects are one example of governmental instruments that have been tested in other European countries with good results.Reduced operating costs appear to be the main incentive for property owners to make their buildings more energy efficient. The best result of an energy efficiency project is usually achieved by cooperation between property owners and tenants but in order to make that interesting it is important that both parts can profit from the savings.

This study aimed to explore how 31 collage students' cognitive performance and their ability to create false memories were affected by the exposure of an extraneous background noise. The studies main hypotheses were based on previous research on how extraneous noise affect the cognitive ability and the creation of false memories: 1) that an extraneous background noise increases the ability to create false memories, 2) that an extraneous background noise impairs the learning of cognitive information, 3) that an extraneous background noise contributes to an increased representation of fictional words, 4) that an extraneous background noise impedes the ability to understand speech . The results showed a tendency in which false memories increased in the condition without background noise, a result which goes in the opposite direction of the hypothesis. Furthermore, the result supported the hypothesis that the extraneous background noise impairs the learning of cognitive information. The results also showed that there was no effect between the conditions regarding the representation of fictional information.

Studiens syfte är att utforska en musikers kroppsspråk vid instuderingen av en orkesterstämma. Detta har observerats under instuderingen av förstaflöjtstämman i fjärde satsen av Brahms andra symfoni. Studien har sin utgångspunkt i det designteoretiska perspektivet och har genomförts med hjälp av videoobservationer under repetitionsperioden av verket. Jag har även fört loggbok under processen av självobservationen. Resultatet av studien visar att de kroppsliga resurserna kan hjälpa, men också stjälpa, den musikaliska processen och dess uttryck.

Abstract Integrated mental training is a method that entails a systematic and long-term training of mental processes (thoughts, images, emotions) that aims to enhance performance as well as gratify feelings and improve thought processes. This training develops an alternative system of control by using substitute state of consciousness and self-hypnosis. The method is concerned with both mindfulness and performance approaches, which is crucial in order to feel and function better. The intent of this study is to highlight the experience of the different steps of integrated mental training to gain an understanding of how, where, and when changes occur. To achieve the objective of this study, a qualitative empirical method was used.

Bakgrund: Prestationsmätning syftar till att implementera ett företags strategi. För att lyckas med det krävs tillgång till relevant information för att ta rätt beslut. Nya alternativa organisationsformer som shared service centres har lett till en ökad efterfrågan på ny anpassad ekonomistyrning. En förfrågan om att utvärdera P2P-processens prestationsmätningssystem på IKEA AB, Finance Services ledde till utvärderingsstudien.Syfte: Syftet med utvärderingsstudien är att utveckla en modell med dimensioner, för att analysera prestationsmätningssystem på shared service centres. Analysmodellen kommer appliceras på P2P-processen inom IKEA AB, Finance Services.