Denna rapport beskriver arbetet med utvecklingen av en ny modell för kaplanturbiner. Utvecklingen bygger på två kopplade differentialekvationer som under arbetets gång anpassats och implementerats i turbinmodellen.Modellen beskriver hur vattenflöde och turbinmoment påverkas av avvikelsen från den optimala kombineringskurvan för vinklarna på turbinens ledskena och löphjul, och är anpassad för ett referensaggregat med tillgängliga provdata. Även övriga enheter i vattenkraftaggregatet modelleras och sätts samman med frekvensregulator och elnät för att simulera aggregatets reglerstabilitet i önätsdrift.Verifieringen av turbinmodellen sker genom försök att återskapa de befintliga verkningsgradskurvorna med hjälp av modellen. Resultatet visar en god följning av de verkliga kurvformerna, dock med något lägre maximal verkningsgrad.Verifieringen av önätmodellen sker genom att prova stabiliteten i nätfrekvens och turbineffekt vid stegpålastningar. Resultatet ger en stabilare reglerstabilitet än i verkligheten, men uppfyller ändå förväntningarna på en fungerande modell.This report describes the development of a new kaplan turbine model.

It is estimated that 22 000 contaminated areas exist in Sweden today. In order to classify the risk of contaminant migration from these areas and to prioritize which of these contaminated areas should first be treated, the Swedish Environmental Protection Agency (EPA) has designed a method, for the investigation of contaminated areas (MIFO). One of these contaminated areas is the landfill Gräsötippen outside Köping. The landfill has been used by both Yara AB and the Köping municipality between the years 1945 and 1975, and both industrial and household waste have been deposited there. The aim of this report is to survey which contaminants that can be found in the soil and water in the landfill Gräsötippen and to evaluate the migration of these contaminants.

Through previous studies during my education, I have experienced that chemical deicing road salt is a known problem, mainly in southern Sweden. Road salt causes damage to the environment and also damage to vehicles and structures such as bridges, etc. Road salt causes vehicles and steel constructions to rust, leading to increased costs for repairs of damage to structures. Road salt also causes damage to the plants and the economy to suffer, when plant material and soil needs to be replaced. In order to get closer to a solution, I put up three questions.

This study is made on assignment by the local board of forestry in Skåne, Blekinge and Halland. The change of the forest law 1994 brought a new type of management plan. A more active planning was introduced in order to equate the environment goal with the production goal. The purpose with this study is to give a better picture of how planning for nature conservation in production forest is made and to develop support for selection of silviculture methods for stands with combined goals. With combined goals means production forestry with a reinforced consideration to both nature and culture, called PF-classified stands. This was done by: ? Describing silviculture models from the literature that are possible to use for stands with combined goals. ? Describing silviculture models that is used in practice in stands with combined goals. ? Describing how the classification of stands with combined goals is used. Which means, were in the terrain, with which frequency and in which type of forest PF-classification is used. ? Comparing differences and similarities of theoretical and practical used models. The study was done partly as a literature study and partly as an interview study of forest planners.

We were accepted to the field study Dignity and therefore chose to write our thesis in connection with it. Our subject is the oasis of Siwa in Egypt. The society has long been isolated, and therefore, the city has been able to preserve their handicraft methods and values. We chose to study the Ecological and Handicraft Development Center, which is a newly opened center for craft production. We wanted to see how the centre could use storytelling as a marketing strategy.

Den här studien berör några av de miljöpsykologiska grunderna i Alnarps Rehabiliteringsträdgårds uppbyggnad. Den ger förslag på hur karaktären rofylld kan förstärkas och hur säsongen kan förlängas i den restorativa delen av välkomstträdgården med växter som tilltalar flera av våra sinnen. Deltagarna som kommer till trädgården har i regel stressrelaterade åkommor såsom utmattningssyndrom och har varit sjukskrivna en längre tid. De är ofta mycket känsliga på grund av fysisk och psykisk utmattning. Studier visar att deltagarna har behov av en kravlös miljö där de kan få vara ostörda.

Most descriptions of stereotypic behaviours have in common that these repetitive behaviours only has been observed in captive animals and therefore it has been proposed that stereotypies exist because we house animals in environments that are sub-optimal to them. Some scientists claim that performance of stereotypies in itself decreases the animal's welfare due to costs in time, energy and health and a poorer quality of life. Other scientists assert that individuals performing stereotypies may have a better welfare compared to the rest of the animals in the same environment, since these individuals have developed strategies to cope with stress. Studies have estimated the prevalence of abnormal behaviours in horses to 18-30 % of the population. Several studies on cribbing have revealed a prevalence of 4-5 %, although some results indicate that more than 10 % of the horse population performs this stereotypy.

Att eleverna får lära sig att skriva är ett av grundskolans viktigaste uppdrag. Under vår verksamhetsförlagda utbildning under tiden på Lärarhögskolan har vi sett att mycket av undervisningen under de första åren i grundskolan ägnas åt att läsa, samtala och skriva. Det har fått oss att fundera kring hur lärare fortsätter att arbeta med skrivandet. Vårt syfte med den här studien är att fördjupa förståelsen för och utveckla kunskaper om hur lärare ser på den fortsatta skrivutvecklingen i skolår 4-6. Syftet är också att utveckla förståelse för vad lärare anser vara viktig kunskap i ämnet.

Utfört examensarbete undersöker vinkelfelet i mätkretsen för riktade jordfelsskydd och hur det påverkar dess felbortkoppling. Uppkomna vinkelfel i mätkretsen kan påverka det riktade jordfelsskyddet så att verklig felström och uppmätt felström inte stämmer överens, vilket kan leda till uteblivna eller obefogade felbortkopplingar. Vattenfall ställer krav på att vinkelfelet får uppgå till max ±2 grader för mätkretsen. Eftersom vinkelfelet i många fall har en hög påverkan på jordfelsskyddets noggrannhet undersöks vad Vattenfalls vinkelkrav egentligen innebär. Största orsaken till vinkelfelet uppstår oftast i strömtransformatorn och därför undersöks hur mycket två strömtransformatorer med olika klassificeringar som är vanliga i elnätet påverkar vinkelfelet i mätkretsen.Jordfel är det vanligast uppkomna felet i mellanspänningsnät och dess storlek beror till stor del på hur mycket kapacitivt bidrag som finns på linjerna samt värdet på nollpunktsresistorn.

Modern forestry requires a high degree of machine traffic for clear felling and scarification operations. The machines most frequently used are big and the traffic often results in tracks on the forest ground. There are many small streams running through a forest, in connection to logging operations, machines might cross these frequently. These crossings could result in the erosion of fine particulate inorganic matter, which ends up in the stream. The aim of this thesis was to give a general description of small forest streams of order-one in the county of Värmland and to determine the frequency of machine tracks in small streams.

AbstractAt Saltvikens copperindustry, which is located in the municipality of Oskarshamn, copper was refined from sulphiteore some hundred years ago. The ore underwent several steps in the process before the final product was received. These steps all had an influence on the environment through discharge of heavy metals. The area where the copper industry was located is today considered to be of specific national interest due to its valuable nature and cultural values, as well as its value for recreational outdoor activities. Therefore, it is important to determine the present level of contamination and if any transport of contaminants have occurred, and to identify the risks that are associated with the site both at present and in a longer time perspective.Thirtynine soil samples and 16 sediment samples have been analyzed.

I ett samhälle där det råder allt större konkurrens mellan företag och produkter, och då kunderna blir allt mer krävande, har Cause Related Marketing (CRM) blivit något av en unik win-win strategi. CRM innebär att ett företag tillsammans med en välgörenhetsorganisation skapar ett samarbete för att marknadsföra och sälja en produkt för välgörande ändamål och därmed nå ömsesidig vinst.Syftet med uppsatsen är att se vilka effekter CRM kan ha i jämförelse med traditionell marknadsföring. Vi har valt att undersöka varför företag väljer att engagera sig i välgörenhet och om man kan använda ett sådant samarbete som ett marknadsföringsverktyg.Den metod vi använt för studien är en kvalitativ metod. Till vår hjälp har vi använt oss av tidigare forskning inom ämnet samt genomfört intervjuer med företag som varit relevanta för studien. Företagen som medverkar är verksamma inom detaljhandel eller dagligvaruhandel och samtliga har valt att engagera sig i Rosa Bandet.Slutsatser som dragits genom studien är att CRM är en strategi som alla företag inom detaljhandel och dagligvaruhandel kan använda sig av.

Through previous studies during my education, I have experienced that chemical deicing road salt is a known problem, mainly in southern Sweden. Road salt causes damage to the environment and also damage to vehicles and structures such as bridges, etc. Road salt causes vehicles and steel constructions to rust, leading to increased costs for repairs of damage to structures. Road salt also causes damage to the plants and the economy to suffer, when plant material and soil needs to be replaced. In order to get closer to a solution, I put up three questions.

Abstract Heléne Slivka (2013). Kvalitetsarbete ur ett specialpedagogiskt perspektiv ? en fallstudie. (Quality assurance process in the elementary school from a special education perspective ? a case study.) The research This essay investigates the language in the school´s quality assurance documents. An important aspect of this is the way in which language structures and informs how we think about, and work with, students with special needs. Aim The aim of this essay is to problematize how students with special needs are represented in the quality assurance documents of the school. The writer intends to point out how the ways in which the language used to describe students informs governing processes.

The daily newspaper market in Sweden has been a mighty strong media market, except for major market crisis which occurred in the 1990s in Sweden, that led to several newspapers came into an economic crisis. One of the actions that many Swedish newspapers did was to reduce the physical size of the newspaper from broadsheet to tabloid. After studying several academical studies from scientists and students who claim and show in their results that the tabloid tendencies has spread out in the editorial content I discovered that the common thing for these studies where firstly, that there were not many studies that showed the tabloid tendencies of the editorial content in a longer historical perspective, secondly that the studies jointly studied tabloidization tendencies (how the editorial content changed from writing about hard news to write about soft news) in the editorial content of newspapers that have changed the physical format size. The material that was analysed was tabloid tendencies in news articles in two daily Swedish newspapers, Jönköping-Posten (broadsheet) and Aftonbladet (tabloid) in the years 50s, 60s, 70s, 80s and 90s. The goal was to see if or how much of the editorial content of news articles that changed over time by tabloid tendencies in individual daily newspaper as well as a comparison of the various newspaper formats.This lead to the purpose of this master study:To investigate if it exists tabloid tendencies in the editorial content of news articles in the Swedish newspapers Aftonbladet and Jönköping-Posten between the 1950s to 1990s.In addition this purpose was operationalized from theories of tabloidization, the main theories that are used in this master study is developed by the researchers Shelly McLachlan and Peter Golding and their definition for tabloidization range, form and style.The best tool to analyse the material that have been gathered was to use of quantitative content analysis.