In this thesis a possible cost effective runner change of some of the units in the hydroelectric power station Olidan is investigated. The possibility to drive a unit at the same efficiency point through a change of the turbine shaft speed and the rate of discharge is tested. Furthermore the theories behind model testing, determination of efficiency increase from model to prototype and efficiency measurements shall be discussed and analyzed with Olidan as a starting point.A predicted curve has been built on information from model tests and field measurements on the existing runners and runner data from the test of the new model. The predicted curve shows the difference in efficiency between an existing runner and a modern one. It is the difference in efficiency that is used in the calculations that are to show whether changing to a pair of new runners will be cost effective or not.

The usability of the Internet increases for every year. The Weblog phenomenon makes it possible for anyone to easily publish, find information and get in touch with other people through the net. This Essay treats the possibilities the Weblog medium offer Swedish libraries and librarians in library contexts. The purpose of the study is to examine the Web phenomenon: Weblogs, and their significance for a total of eleven Library Heads and librarians together with their view on the Weblog activity at each library connected Weblog, to get comprehension and new knowledge on the usability of Weblogs in the library sector. The foundation for the Essay consists of a qualitative interview study, built on asynchronous e-mail interviews and telephone interviews with blogging librarians and Heads of libraries.

During whole-tree harvesting, there is a risk that the soil will become impoverished of nutrients. To prevent this, nutrients are returned to the harvested site as wood ash. This action also reduces the risk of soil acidification. Nevertheless, the ash does not result in any increase of tree growth if it is added on mineral soils, which is where the measure is most commonly used in Sweden. Due to the lack of growth response, the interest from landowners is small, which is why ash amendment today is not done enough to compensate for the need.

Bovine Respiratory Syncytial Virus (BRSV) is a common cause of respiratory disease among young cattle. The virus causes severe losses; the herd mortality rate can sometimes be as high as 20 %. In this study the avidity (i.e the antigen binding force) of BRSV specific antibodies was measured to see if there was a difference between antibodies produced during an acute phase of infection and antibodies produced by earlier infected animals. A commercially available ELISA-testkit against BRSV-specific antibodies was used and an incubation step with 6M urea was added. The effect of the urea is that it breaks the weak bonds between antibodies and antigen while the stronger bonds remain intact. Four different groups of animals were included in this study; seven calves that were naturally infected, three acutely infected calves with known time of infection, five cows that were seropositive during several years and four experimentally infected calves that had been a part of a vaccine trial. The results of this study showed that antibodies produced during the acute phase of an infection had a low avidity and that the avidity increased with time after infection.

Introduction: Sleep is necessary for human survival. Difficulty sleeping occurs in about one in four adult person in Sweden, insomnia in every ten. There are several reasons for difficulty sleeping, where stress is one of the most common. The quality of life and health are affected negatively. Treatment with proven efficacy against insomnia is not only sleep medication, but also cognitive behavioral therapy, CBT.

The horse is a homeothermic animal and to keep a constant body temperature in winter season is important. Acclimatisation is to provide means for a good thermal insulation consisting of skin, hair, and an outer air layer. The skin covers the horses body and it is composed of three main layers where the top layer of the epidermis consists of dead keratinized cells that are constantly being sheed. The dermis is composed of collagen connective tissue that give the skin its strength. The bottom layer with subcutaneous fat provides a thermal insulation and can be used as an energy reserve in cold weather.

Society is characterized by patterns of behavior and interaction that is created and recreated inthe interplay between individuality/collectivity and freedom/constraint, thus represents avariety of social issues and social phenomena. One of these phenomena is social supportexchanges and social capital. In order to obtain views on how this might appear in a specificsociety and contribute to the knowledge about social support exchanges and social capital, thisstudy was done with seven families in a village in Nepal. The village and the families gave aview and an example of how it might look in a place where social support exchanges plays acrucial role in this way of living. Through observations and interviews I have tried to make thesocial support exchange areas and meanings visibile.

Partner in a close company is taxed under special rules for private companies. This is to avoid a fiscal revenue conversion. Partner as having a major influence in the company and take out what is really earned income as dividends and thus be taxed at a significantly lower rate. The purpose of the close company rules is that a partner in labor income is taxed in the same way that an employee?s income.The problem that arises when one partner in a closely held company leave a shareholders contribution to the company which aims to raise the threshold for the shares discussed in this paper.

Preservation of cells and tissues by freezing at temperatures below 70°C has led to new possibilities for the storage of germ cells for fertility preservation. During the freezing process problems might occur, the greatest being ice crystallization which can cause membrane destruction and thus cell death. To minimize this risk, solutions that reduce the freezing point can be added to reduce crystallization and increase survival rates. These solutions are called cryoprotectants. The best method for freezing is still not known.The aim of this study was to analyze the effect of various parameters on the survival rate of human semen frozen with liquid nitrogen.

Trading financial securities at stock exchanges and other authorized market places is today a particularly important socioeconomic phenomenon in many industrialized countries. A well functioning securities market is crucial for the economic development in these countries. The modern trading with stocks and other financial securities is characterized by the fact that the majority of the transactions at the stock exchanges are carried out through various intermediaries. The ultimate counterparties that are involved in a securities transaction (the seller and the buyer) are often unknown to each other. The anonymity in the securities trading implies several interesting legal problems.

Bakgrund: I och med samhällets globalisering ökar möjligheterna för revisionsmedarbetare till internationell rörlighet länder emellan. En svensk revisionsmedarbetare har idag möjlighet att åka på en utbytesperiod för att tillägna sig ny kunskap; såväl professionell som privat, vilket det finns olika tillvägagångssätt för. Samhälleliga, privata och arbetsmässiga kulturkrockar är något som en revisionsmedarbetare kan uppleva genom ett utbyte. För revisionsmedarbetare bör det vara nyttigt att erfara sådana här skillnader för att skapa ny kunskap, utveckla sin egna samt kunna dela med sig av denna.Syfte: Syftet med denna uppsats är att undersöka vilken utbyteskunskap en svensk revisionsmedarbetare har av ett utbyte till USA, hur denna tillägnas, samt om denna kunskap går att implementera i det fortsatta arbetet i Sverige.Definitioner: Utbyteskunskap definieras i denna uppsats som den typ av kunskap som tillägnas vid ett utbyte. Med kunskap avses sådan som kan användas inom revisionsyrket, vilket innefattar kunskap om arbetsmetoder, tillvägagångssätt, sociala förhållanden samt regelverkens uppbyggnad.Resultat och slutsatser: Resultatet av studien konstaterar att utbyteskunskapen består i privata--?, kulturella--? och arbetsmässiga områden, vilka tillägnas genom erfarenhetsbaserat lärande samt praktisk involvering i samhället..

Sweden has been a member of the European Union since 1995 and the power of the organisation to make decisions has increased over the years in a rate which hasn?t been followed by an equally increase in democratization. This is partly due to the lack of participation in the decision making process and at the national level the citizens don?t possess enough channels to compensate the loss of influence. To solve this democratic dilemma, more and more countries are turning to the referendum.

Recent studies made by Margaritis and Psillaki,have shown that a lower debt ratio and higher efficiency are correlated in their studies performed oncompanies in New Zeeland. Other researchers have been able to show a connection between other industries than the one used in our studies,among these are Titman and Wessler. These studies have been done with a great selection of companies in different industries and time periods. However most of these researchers have used traditional ratios and variables.This study aims to find and analyze connections between returns and lower debt ratios in real estate companies listed on the Stockholm stock exchange. Instead of the traditional debt-equity ratio we will construct our own taking long term debts and property assets.

Title: What´s the problem? - A study of revenue recognition in IT-consultant     companiesProblem: How do the chosen IT-consultant companies recognize their revenues? What difficulties do the interviewed companies experience in connection with the revenue recognition?Purpose: The purpose of this empirical study is to study how companies in the IT-consultant industry recognize revenues, and to investigate if the companies perceive any difficulties in connection with the revenue recognition. The aim of the study is to give useful advice and guidelines to companies in the IT-consultant business based on the extracted result. Method: The survey took place in Vasteras and started with a preliminary interview with a certified accountant, who had great knowledge of the subject revenue recognition. Then seven companies from the IT-consultant industry were selected, whereof two took part in semi constructed interviews.  Study of the other five companies? ways to recognize revenue was made through their annual reports.   Conclusion: One of the studied companies recognizes their revenues according to the rules in IAS 18, which is because it is listed on the stock exchange.

Börshandlade fonder (ETF:er) blir alltmer populära som spar- och investeringsalternativ. Antalet ETF:er och variationen av dessa ökar stadigt. Denna studie ser på ETF:er likställda aktier (ur ett värdepappersperspektiv) och syftar till att applicera momentumstrategier på den amerikanska ETF-marknaden, likt Jegadeesh och Titman (1993), för att testa sambandet mellan ETF:ers kapitalvärde och riskjusterad överavkastning, estimerat genom Jensens alfa. Med utgångspunkt från Banz (1981) som visar på samband mellan investeringar i småbolagsaktier och högre riskjusterad avkastning (än motsvarande investeringar i stora bolags aktier). Testet har baserats på portföljer sammansatta på momentum- och contrarianstrategier för att utröna om en ETFs storlek på kapitalvärde är avgörande för en ETFs avkastning.