Landstinget i Kronobergs län utförde 2006 en enkätundersökning bland elever i årskurserna 5, 8 och gymnasiets årskurs 2. Datamaterialet för gymnasieeleverna har studerats i detta arbete där den psykiska ohälsan och alkoholkonsumtion varit i fokus.Det statistiska arbetet är uppdelat i tre delar: Metodbeskrivning, hantering av programmet SPSS samt en undersökning av gymnasieelevers psykiska ohälsa och alkoholkonsumtion. I metodbeskrivningen har metoderna dikotomisering, logistisk regression, Wald, faktorinteraktion och kategorisering beskrivits. För hantering av stora datamaterial samt för att kunna ta fram statistiska samband rörande psykisk ohälsa och alkoholkonsumtion har programmet SPSS använts och illustrerats i arbetet. De förklarande variablerna som varit mest inflytelserika mot den psykiska ohälsan var ?Tycker du att du är frisk??, ?Har du någonsin använt läkemedel tillsammans med alkohol i berusningssyfte? samt ?Trivs du med livet??.

This report summarize a simple and efficient way to convert 2D into 3D designs. It explains the benefits of a 3D design compared with 2D, and how those benefits may be used.It will also give the reader a presentation of the company Clean Air Technologies, which for the most part constructs cleaning facilities for power plants. How to create 3D-libraries for some of those facilities will be introduced in this composition.The collaboration with Clean Air Technologies has resulted in several 3D animated movies and rendered images. This has increased the quality of the companies offer presentations, which has made it easier for the prospective customer to get an improved overall image of the power plant design..

The economic development and industrialization that has taken place in many parts of the world during the past century has brought about a huge increase in economic welfare. During this process, it has repeatedly been debated whether the gains from economic development are shared by everyone or just a few. In the field of economics, vast research has been conducted on this particular subject ever since the 1950?s. The most famous contribution might be said to be Simon Kuznets article, Growth and Income Inequality from 1955 and the ?inverted U?-hypothesis that was formulated on the basis of that article.

Syfte: Syftet med uppsatsen är att undersöka och analysera om det finns något samband mellan företags lönsamhet och dess kapitalstruktur, storlek eller branschtillhörigheten. Detta innebär att en empirisk studie kommer att ske på soliditet, omsättning samt branschtillhörigheten för att se hur och om det finns något samband mellan lönsamheten och dessa tre faktorer. Vidare är syftet även att undersöka om det kan finnas något samband mellan företags lönsamhet och företags standardavvikelse på räntabilitet.Metod: Undersökningen är en empirisk studie med en deduktiv kvantitativ och kvalitativ ansats. Empirin undersöks med olika statistiska metoder såsom regressionsanalys och korrelationsberäkning.Teori: Uppsatsen har utgått från teorier gällande kapitalstruktur och lönsamhet. Nyckeltalen som används från dessa teorier är soliditet respektive räntabilitet på eget kapital.Empiri: Data från de 20 största börsnoterade företagen på Stockholmsbörsen har samlats in från företagens årsredovisningar 2003-2007.

This report describes a synchronous machine model with magnetic saturation in d-axis, neutralconnection and electrical exciter interface for the transient simulator PSCAD/EMTDC. It hasbeen designed and verified in comparison to the regular machine model in EMTDC.The performance of the model is very good when incorporating a linear as well as a saturatedmagnetising inductance. The dynamic deviation is only thousandths to ten thousandths perunit. By using a cubic interpolation of the saturation curve, the model gives a good representationof the saturation effect. The open source code implementation of the synchronousmachine model gives the possibility to easily adapt the model to specific requirements.The derived model makes it possible to simulate a synchronous machine with its excitationsystems, e.g.

Along with other European farmland birds, the skylark (Alauda arvensis) has declined rapidly since the 1970?s. Between 1975 and 2003, the Swedish population of skylarks declined with 64 %. In Britain, the decline is often explained by alterations in farming practices in general and the shift from spring-sown to winter-sown cereals in particular. The dense vegetation structure of winter cereals is limiting the number of breeding attempts possible, causing the entire population to decline.

This master thesis is the documented work of the construction process and testing of a three hour laboratory session in mathematics aimed at high school level students. The purpose of the thesis was to create an interesting laboratory session for the science education center ?The House of Science? that could be used as a part of their regular program directed to schools. The thesis explores the possibilities for how one can construct a laboratory session on the topic ?molecular symmetry? as well as the underlying pedagogical theories used to describe learning processes in creative contexts.

This study aims to evaluate the value relevance of Piotroski?s (2000) nine fundamental signals. In order to do this, the signals are tested on the OMX Nordic Exchange Stockholm between the years 2003 and 2009. The hypotheses of the study are whether the signals are value relevant and if the value relevance has changed. To test this, a Chi-square test and a regression are used.

This study aims to evaluate the value relevance of Piotroski?s (2000) nine fundamental signals. In order to do this, the signals are tested on the OMX Nordic Exchange Stockholm between the years 2003 and 2009. The hypotheses of the study are whether the signals are value relevant and if the value relevance has changed. To test this, a Chi-square test and a regression are used.

Studiens syfte är att, på den amerikanska marknaden, undersöka vilka publika finansiella nyckeltal som påverkar ett företags långsiktiga kreditbetyg. Studien ämnar även, i samma kontext, utreda hur nyckeltalen förhåller sig till varandra. Den teoretiska referensramen består av tidigare forskning och som metod har en multipel linjär regressionsmodell använts. Empirin är baserad på företag på amerikanska S&P 500. Slutsatsen är att det med 8 finansiella nyckeltal är möjligt att förklara ca 65 % av ett kreditbetyg..

The global biodiversity loss is mainly due to human activities such as an intensification of forestry. Boreal forest ecosystems in Fennoscandia are characterized by disturbances such as forest fires, storms and floods. However, industrial forestry practices suppress forest fires and change the landscape, leading to a loss of habitats and associated species. Particularly lichen species with slow adaptation abilities and a strong substrate specificity face an extinction debt in boreal forests since their substrates are long-lived but no longer created. In this study the species-substrate relationship of two red-listed forest-fire dependent lichen species Carbon-icola anthracophila and C.

As new ways of using computers are constantly being developed, other ways of interacting are made possible. One of the most desired types of interaction with computers is a touch-screen where the user can actually organize everything simply by using the fingertips. The purpose of this project is to enhance an existing framework with an application that works with a touch-screen device. The application is to be used as a tool for presentational usage. The result is an application where the user by simple means can use a touch-screen to hold a professional presentation.

With my bachelorwork I aimed to design a new mobile ?livingspace? which should become as small, functional andeasy to assemble as possible.The ?living space?is made for people who are interested inhaving a biking vacation and getting more close to naturebut at the same time wish to have a comfortable and easyway of traveling and living. The ?living space? is a multipurposevehicle which you transport with a bicycle. Thevehicle contains a kitchen with workspace, a refridgerator,space for luggage and a comfortable sleeping space.In my workingprocess I made research, sketches and modelsto find a functional solution..

Bakgrund och Problem: Aktiemarknaden påverkas både av inhemska och utländska faktorer. Därför är det av intresse att se vilka makroekonomiska variabler som påverkar den svenska aktiemarknaden. Anledningen till att Sverige har valts som den geografiska punkten är att det är av intresse att se hur ett litet land som Sverige, som har en öppen ekonomi påverkas av de utvalda makroekonomiska variablerna.Syfte: Syftet med uppsatsen är att med hjälp av information samt analys, studera hur de olika makroekonomiska variablerna påverkar den inhemska aktiemarknaden. Olika faktorer som påverkar aktiemarknaden kommer att lyftas fram för att i sin tur även se till de olika branscherna.Metod: Då data enbart består av hämtning av tidigare information fokuseras det enbart på sekundärdata i form av historiska siffror samt historiska undersökningar. De statistiska tester som tillämpas är Granger Causality test, Johansens Cointegration test, Impulse Response Function test, ADF test, KPSS test, Mulitpel regression.Slutsats: Med de resultat som presenterades i denna studie, skulle vi nog inte kunna säga att vi har ett svar över vilka aktier en investerare ska införskaffa.

By using pollen analysis, 14C-dating and historical sources, I studied the history of vegetation and land use at an abandoned forest settlement near the Lade summer farms in the parish of Mora, Dalama. The aim of this paper is to investigate the agricultural establishment and development, the effects of this on forest vegetation, and the origin and development of summer farming. The analysis of pollen in a peat core revealed that a settlement was established at Lade around 1000 AD. Cereal cultivation, hay-making on the mire and extensive forest grazing were intro-duced as a complete agricultural system. Pollen analysis and the presence of ancient fields suggests that cultivation took place on permanent fields. Barley was the main crop, but rye and hops/hemp were also grown at the settlement.