The voltage level in the power grid varies due to variations in load and production. Normally these variations are manageable, but they may be excessively large during a disturbance. If the voltage is too high it may damage the equipment in the grid and too low voltages may cause problems like voltage instability. The magnitude of the voltage variation depends on the short circuit power capacity of the point of interest.This problem may become lore prominent due to automatic voltage regulation that acts on shunt reactors and shunt capacitors. When the shunt reactor is connected or disconnected to the grid it may cause such large changes in the voltage that the shunt reactor starts hunting.

Root rot causes large economical losses for Swedish forestry. The spread of root rot can partly be prevented by treating the spruce stumps in thinnings. Late pre-commercial thinning (PCT) is one of the forestry measures where stump treatment is not used. Late PCT can be defined as: The act of cleaning the stand with the aim of improving accessibility and sight within the stand, and so to increase the mean stem´s volume during the first conventional thinning. The aim of this study was to examine how late PCT is performed, its spatial extent and if it aids the spreading of root rot. The study was limited to encompass late PCT before first conventional thinnings in spruce stands in southern Sweden. Samples of spruce stumps were taken from four stands where late PTC had been carried out.

The purpose of this study is to map out and to analyze the spatial variation of female representation at the national level in established democracies. The aim is also to explain the variation in the female representation. The main questions that the paper tries to answer are:1.How does women representation in established democratic parliaments vary?2.Why does women representation in established democratic parliaments vary?This study is a comparative and statistic study, i.e. a study that includes a bigger number of countries and where quantitative analysis methods are used in order to achieve comparative analyses.

In Sweden plans to build high speed railways have been around since the early 1990s and the planshave developed to be more precised since. The future Swedish high-speed rail network is supposedto consist of two lines. Götalandsbanan; from Stockholm to Gothenburg, and Europabanan fromJönköping through the Öresund Region to Hamburg.The description of the aim to build high-speed railways in Sweden has in former reports always beento achieve rapid passenger traffic between big Scandinavian cities and Europe. There are almostnothing mentioned about the possibilities of high-speed transports of cargo on these railways. Thisstudy aims to clarify the freight transport market for Götalandsbanan and Europabanan.Today there is only one transport system with high-speed freight trains.

Background: Low back pain (LBP) is a common disorder in the western world. A majority of those afflicted by a first acute episode is at high risk of developing sub-acute or persistent symptoms. Persistent LBP can be caused by pathological changes in the discs and disturbed neuromuscular activation, which can cause hypotrophy of the extensors strong type-2 muscle fibres. Deadlift (DL) is an exercise that may correct all these pathological transformations. Aim: To investigate the effect of DL-training on patients with persistent LBP.

Uppsatsens syfte är att jämföra risk och avkastning från en etisk fond med risk och avkastning från åtta slumpmässigt valda fonder och SIX RX-index för att utreda om etiska investeringar är jämförbara med andra investeringar. Skälet till att en egen etisk fond sätts samman är att vi ser problem med innehållet i etablerade etiska fonder.Genom att ställa upp finansiella och etiska kriterier har vi valt ut 34 bolag som ingår i vår egenkonstruerade etiska fond. För att uppfylla vårt syfte har vi valt att jämföra fondernas utveckling genom att studera fondernas avkastning, risk och sharpe-kvot under perioden 2002 - 2004.Inledningsvis placeras uppsatsen i ett teoriskt ramverk och den effektiva marknadens relevans för arbetet förklaras. Därefter följer en allmän diskussion om små placerares val och möjligheter i fråga om sparande. Utvärdering av fonder beskrivs därefter ingående och tre olika metoder att mäta en fonds prestation diskuteras.

Sammanfattning Examensarbete i företagsekonomi III, Ekonomihögskolan vid Linnéuniversitetet i Kalmar, Ekonomistyrning, 2FE71E, VT 2014.Författare: Eric Paulsen, Simon PerchunHandledare och examinator: Thomas Karlsson & Petter BoyeTitel: Bitcoin - Risk eller möjlighet? Bakgrund: Den digitala kryptovalutan har idag blommat upp där Bitcoin står i fokus. Något som blivit uppmärksammat i bland annat media och genom politiska uttalanden. Detta har fått företag till att applicera Bitcoin som möjligt betalsätt utöver de vanliga betalmöjligheterna som exempelvis kortbetalningar. Syfte: Syftet med denna uppsats är att efter insamling av empiri kunna beskriva genom vår utvalda teoretiska referensram varför företag väljer att acceptera Bitcoin som möjligt betalmedel, samt vilka möjligheter och risker som finns förenade inom företagsbranschen, och sedan förklara vidare hur företagen hanterar dessa möjligheter och risker. Metod: För att kunna uppfylla syftet med studien så har vi utgått från en abduktiv metodsyn. Vi har samlat in empiri i form av semistrukturerade kvalitativa intervjuer från sex olika företag som mottar Bitcoin som möjligt betalsätt.

Det här projektet är det sista och avslutande momentet på vår utbildning Medie-design vid Luleå Tekniska Universitet och kallas för ett c-arbete. Tack vare moderniseringen av utbildningen som vi går så har vi numera möjligheten att göra ett konstnärligt arbete istället för att skriva en vetenskaplig rapport. Det innebär att vi har lagt mycket tid på att planera och framställa en grafisk produkt och den här rapporten redogör för vår process från planeringsstadiet till den färdiga produkten. Syftet med detta projekt är att vi ska lära oss hur boktryckningsprocessen fungerar och samtidigt öppna läsarnas ögon för hur stor skillnad människor verkligen gör i samhället. Vidare kommer vi som nyexaminerade mediedesigners att använda oss av detta grafiska arbete och visa upp det som en del av vår portfolio vid framtida arbetsintervjuer.

This thesis suggests an explanation for how it is possible for individuals living in an unsafe neighborhood to expressa highlevel of security. Araby is the district in Växjö municipality withthe highest level of insecurity. Within the district, there is acategory of individuals in security-measurements showing a high degree of security. Inhabitants living in house in Araby also seem to show a higher level of security than inhabitants in the same accommodation in other neighborhoods in the municipality.The study's purpose is to understand how individuals belonging to an unsafe neighborhood can experience a high degree of security.Qualitative data were collected from an observation in Araby and from interviews with individuals living in house in the district.Previous research has shown that security in the surrounding area depends on several factors, such as disorders, the degree of social control and personal opinions. Thestudy shows how a distinction to places and people in the district can explain the degree of security.

Wetlands are important ecosystems and form habitat for both common and threatened species. In Sweden, as well in many other places on earth, there is a lack of wetlands. There is an expressed will to adjust this lack through restoration of wetlands with reduced function and through construction of new wetlands. Follow-ups and evaluations are important steps to optimize these actions. The wetland Vattenparken was constructed 1999 ? 2000 for treatment of surface water.

This document presents calculations of adjusted GDP based on satellite household accounts for the year 2001 with the purpose to compare adjusted and official GDP for Sweden, Germany, Estonia and Finland. Household production in each country is estimated using time use survey data from Eurostat and a monetary value is estimated using average wage (after taxes) for each country. The results indicate that the value of household production using this methodology increases GDP with between 42% (Finland) and 55% (Germany) compared to official GDP statistics. A comparison of GDP/capita between the countries included in the study shows that the GDP/capita in Germany increases more that the other countries due to the relatively high proportion of time used for household production (mainly German women) combined with a high average wage. In fact, the results show that Germany has higher adjusted GDP/capita than both Finland and Sweden (but Germany has lower GDP per capita when official statistics is used for the comparison).

The purpose of this paper is to try to get an understanding of the underlying causes and reasons that students starting in seventh grade junior high school seek out a particular group, and the extent to which they do so.The work is based on the questions: How do students perceive the meeting with their prospective bench-companion in a new composite class? What should a teacher consider when it comes to bench placement in a new composite class? Do the students change, and if so to what extent, friends when they start high school? What are the factors that affect/have affected the students' choice of friends? How large a role does the school play for pupils relationships? What thoughts and feelings do the students have regarding new encounters?I have conducted in-depth interviews with six adolescents in grade seven as the basis for the understanding of how students relate to group selection and group affiliation, and I have then compared this material with previous research on the subject. Furthermore I have availed myself of literature in social- and group psychology.The conclusion which has emerged is that the most important component of a group-process is the sense of solidarity and security, and the results show that students largely retain their old relationships rather than adding new, when they start high school. Hence the teacher plays an important role in ensuring that any imbalance in the group is offset and make sure that nobody is excluded, but also to help make room for new groups and be aware of the sensitive and responsive phase of life that the young people are in..

ABSTRACT. Introduction: Human Immunodeficiency Virus (HIV) is a retrovirus which occurs worldwide and spreads between humans mainly through sex, from mother to child, blood and blood products and between injecting drug users. After been infected with HIV for a couple of years the final stage of the infection progress into Acquired Immune Deficiency Syndrome (AIDS), and there is no cure or vaccine, only medication that delays the development of the disease. Objective: The aim of this thesis is to examine the preventive work against HIV in Sweden, the groups at risk for getting infected and to highlight sexual attitudes and behaviours among adolescents and young adults. Method: A literature based study method was used and the material is based on scientific articles and reports from active actors within the field of HIV prevention.

Syftet med denna systematiska litteraturstudie var att ta reda på vilka faktorer som påverkar uppkomsten av postoperativ urinretention, POUR, i tidigt postoperativt skede. Artikelsökning har skett i databaserna CINAHL, MEDLINE och PsycINFO. Artiklarna kvalitetsbedömdes utifrån en modifierad granskningsmall för artikelgranskning. Sexton artiklar inkluderades i studien. Resultatet visade att med stigande ålder ökade risken för POUR, speciellt för män.

Martinez, A (2011). Attityder hos lastbilsförare gällande mat i samband med långa -respektive korta transportsträckor. Akademin för hälsa och arbetsliv, Högskolan i Gävle. AbstractBackground: The profession as a lorry driver is in many aspects very risky. Factors such as time directive, poor diet and shift work characterize the profession and puts drivers' health at risk. Current research shows that the vast majority of lorry drivers are overweight, suffer from high stress related to work and have on average a very low consumption of fruits and vegetables.