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1448 Uppsatser om Technical properties - Sida 52 av 97
Implementering av en PSS i Trängslets kraftstation
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.
"Hur känd kan jag bli på fem veckor?" : En studie om distribution av musik via Internet.
Internet and the digital channels for distribution have meant big changes for the musicindustry. The physical record that has been symbolising this market for a long time is slowlybeing replaced by digital based music. The technical progress during the last ten years has ledto a democratization of music production. The amateur musicians of today can produce highquality music on their laptops and later distribute it via free music sites. MySpace andYouTube are two of the biggest sites for this free distribution and is therefore my main choiseof study.The purpose of this essay was to find out how and if these changes have made a difference formusicians without a record deal to reach an audience by themselves.
En studie om hur finansanalytiker tillämpar aktievärderingsmodeller
Background: The interest in shares has increased over the years, despite several stock market crashes. One reason for this is the emergence of stock trading online,which makes it easier for individuals to trade in shares. However, there has been much criticism towards financial analyst with the lack of fundamental basis to support their recommendations.Objective: The purpose of this study is to examine the share valuation models swedish financial analysts today applies and consider appropriate. A comparison will also be carried out in previous studies, to see if the application of the modelsand their suitability has changed.Method: The study used a qualitative approach with deductive approach. Semistructured interviews were conducted and the basis for the study's primary data.The theories and previous studies obtained through secondary data.Results: Our results demonstrate that no single model applied, is appropriate.
Utvecklingen av energieffektiv teknologi i svenska datorcenter
This thesis investigate how energy efficient measures has spread throughout the data centers in Sweden. These questions are put up against a theoretical use of such concepts such as green IT, technological evolution, large technical systems and knowledge dissemination. These theories are used to answer the questions that are encountered during the study, such as how green IT is approached, how big of a role environmental thinking has had in the evolvement of these new technologies. The study has been conducted in a longitudinal manner, it is an observation of the phenomenon that is data centers over a longer period of time. 23 non structured interviews spanning over 27.5 hours of recorded material have been conducted alongside a study of archived material.
Avvikelser i energiprestanda
Calculated and measured energy in residential buildings is going to differ. The reason to this may be due to many factors. In this study there is a study on how these factors affect the energy use in a building. To get an insight in what defines energy, there is first a description of energy supply both worldwide and used in Sweden, followed by a description of the energy balance. In this study energy will be studied in residential buildings only.
Ett specialbibliotek och dess relation till användarna, en studie av Goethe-institutets specialbibliotek i Stockholm.
In the master thesis the focus of the study has been on the special library of the Goethe-institute in Stockholm. A survey was made among the visitors coming to the library, to find out how they used the library and how they would judge the quality of service. To find out how the needs and the opinions of the users were meet by the library I also made an interview with the staff one librarian and the chief librarian. In the analysis I used the theory about service quality of Christian Grönroos as a framework. The theory distinguishes the service quality into technical resp.
Animaliska restprodukter vid köttproduktion : Effektiv användning och livsmedelspotential
This master thesis aims to investigate and quantify the potential associated with increasing the usage of edible by-products as food for human consumption on the Swedish market. The main emphasis is on the Swedish production of offal and the obstacles that currently inhibit greater usage of these products as foods.The results indicate that the Swedish market for offal is limited. Only a small amount of the edible by-products that are produced in Sweden every year are consumed as foods and a considerable amount seem to be downgraded into animal feed or thrown away. The utilization of these products is restricted by economical, technical, legal, and cultural factors that all need to be taken into consideration. On the whole, large-scale slaughter plants seem to be more inclined to utilize these products effectively, as the profit from doing so increases proportionately to the produced volumes.
Olika källor, samma islam? : En innehållsanalys av porträtteringen av islam och muslimer i läromedel och tidningsartiklar.
The purpose of this study was to investigate how Islam and Muslims are portrayed a) in results from studies on Swedish teaching materials, and b) in articles in Swedish media newspapers. The study was conducted through two separate studies. In the first study, five previous research reports on how Islam and Muslims are portrayed in Swedish teaching materials were analysed in order to discern the main results regarding the portrayal of Islam and Muslims. In the second study, newspaper articles from 11 Swedish newspapers were analysed in order to discern which central themes emerge in the description of Muslims and Islam in said newspaper articles, as well as which properties and features are attributed to Muslims and Islam in the articles studied. In both studies, the data was analysed inductively through a qualitative content analysis.
Genetic diversity of Roseroot (Rhodiola rosea L.) from Sweden, Greenland and Faroe Islands
Roseroot (R. rosea L.) has gained more attention the last years, mainly because of its phy-topharmacologic properties. Even though many reports in roseroot have been published, only a few articles are dealt with the genetic diversity. The Nordic Genetic Resource Center has collected Roseroot material from Sweden, Greenland and Faroe Islands under different expeditions. The samples were analysed to study the genetic diversity study.
Den naturliga amningen : En etnologisk uppsats om amningens normer och värderingar
This essay investigates how teacher sees and uses mainstream movies as a teaching method. The main question approached is: How does teachers use feature films as a teaching method? Which movies are used and how does their working methods surrounding the movies look like? The purpose of the essay is to make the reader reflect over what influence mainstream media has over the historic knowledge of the students and how teachers use that for educational purposes. The business around historical film has grown over the years and is now a million dollar industry. The conclusion is that teachers mostly use feature films to provoke emotional reactions from the students.
Förlagsbranschen i en dynamisk förändringsprocess En kvalitativ undersökning av tendenser till utveckling inom förlagsbranschen.
The thesis of this Masterpaper has been to analyse what tendencies there might be to distinguish structural alterations in the publishing business today and how they can be understood analytically. The following questions have helped form the principal opinions found in this essay: - What tendencies according to the alterations in publishing business is Piratförlaget representing? -What tendencies according to the alterations in publishing are the literary agents representing? What tendencies regarding the alterations in publishing are the electronic publishing and other techniques related to the publishing business representing? Participants, familiar with the publishing industry in various ways, have been interviewed. The main theory is based on facts from sociology of literature, although Faheys and Randalls Key Scenario, with its driving forces, also provided a great deal of help. In addition, to structure the dynamical publishing business, Peter Senges The Systems Iceberg Model was useful.
Utredning av undervattensbastu
Nordic Marine Sauna AB has, since 2005, designed, manufactured and sold floating saunas. Theproduct are characterised by a well thought thru and appealing design and its high quality. Thecompany is now intending to open a new business area by starting a subsidiary, NordicSubmarine Sauna AB, which will design submerged saunas. The expected customers are leisureand conference centres as well as customers that seek an experience out of the ordinary.Due to the products technical complexity a master thesis was adverted. The task was to do aninvestigation whether such a product is technically viable.The job involved research of existing products and constructions material as well as designingthe product with CAD and FEM-programs.
?En virtuell bokcirkel blir mer en del utav vardagen??: En kvalitativ studie av virtuella bokcirklar
The purpose of this master?s thesis is to examine virtual reading groups, and which meaning the users perceive that the virtual reading groups offer. In addition, the study inquires which details can be improved to further amend the needs and wants among the users of virtual reading groups. Through these outlines, it is discussed how libraries and librarians can make use of virtual reading groups as a resource. The study is based upon qualitative interviews, consisting of asynchronous e-mail interviews with a total of sixteen members in two different virtual reading groups.
Kollektivt Musicerande
The purpose of this master thesis is to identify some phenomena that may contribute or work against the individual musician?s opportunities to contribute with their personal musical intuition in the orchestral work. I want to investigate under which conditions and in what context the orchestra environment gives musicians opportunities to take musical initiatives. I will also test a method to develop and work with musical intuition in a staged trombone audition called blåst. My wish is to highlight orchestra musician's perspective and experiences and to discuss where in an orchestral musician?s everyday work the artistic and authentic musical initiative appears and how we are going about it.
Golfbollstvätt
During the past few years an increased attention has been paid to environmental issues in the construction and property sector in Sweden. In order to simplify the work with these issues a Swedish environmental certification system for buildings called Miljöbyggnad has been developed. This thesis aims to investigate the opinion of a selected number of selected property owners of Miljöbyggnad. From that basis recommendations and actions for the future work with the system will be presented.The investigation has been conducted through personal interviews with five property owners. The main issues that the interviews have been based on are their purpose, experiences, perceived complications and future prospects in terms of certification using Miljöbyggnad.The system intends to be cost-effective, simple and to offer a relevant environmental assessment of buildings and the result from the report indicates that this is largely fulfilled.