Jag har under fem veckors tid utfört mitt examensarbete hos Vattenfall Vattenkraft AB i Sundsvall. Uppgiften bestod i att switchar i deras driftcentraler i Bispgården, Storuman och Vuollerim skulle bytas ut. Uppgiften kompliceras eftersom switcharna är placerade i en driftcentral med ett nätverk som ska fungera dygnet runt. I uppgiften ingick det att skapa en ny konfiguration för de nya switcharna som skulle tas i drift. Detta är den del som tagit allra mest tid.

Denna undersökning behandlar frågan om vilka faktorer som påverkar nedskrivningen av goodwill. Vi har valt tre faktorer utifrån redan existerande teorier och ställt upp hypoteser kring dessa med syfte till att kunna hitta samband mellan de och nedskrivning av goodwill. De undersökta faktorerna är lågkonjunktur, VD-byte och negativt resultat och urvalet av företag är hämtat från OMX Stockholm index för perioden 2006-2008. Företagens årsredovisningar har analyserats för att få fram nödvändig empiri och sedan har chi2- och Fisher-test utförts för att kunna testa trovärdigheten hos hypoteserna. Resultaten visar att goodwill endast skrivs ned vid negativt resultat..

Background: From a public health perspective it is of great interest to prevent the risk of noise induced hearing loss, because in addition to hearing loss, tinnitus and sound sensitivity also may lead to other health problems. About 1,4 million people in Sweden live with some form of hearing loss and 25000 of them are children under the age of 16. Studies have shown that hearing loss among adolescents is increasing and it is often associated with sound environments in their leisure time. Lectures in hearing prevention has been conducted in schools for adolescents but have not reached the desired results. Objective: To enquire caregivers? attitude, behaviour and perceived knowledge about sound exposure and its risks.

Denna eventstudie syftar till att undersöka hur ett byte av noteringslista påverkar kumulativ onormal avkastning (CAR) 1 till och med 12 månader efter genomfört byte. I studien undersöks därför utförda byten av noteringsplats på den svenska aktiemarknaden under tidsperioden 1995-2009. I studien beräknas onormal avkastning delvis med marknadsmodellen (MM) som grund, men också med Fama & French tre-faktormodell (FF) för att öka reliabiliteten. Vidare undersöks om skillnader i CAR föreligger under olika tidsintervall samt om olikheter förekommer efter att berörda företag delats in i undergrupper baserade på typ av byte, industri samt storlek. Slutligen testas utifall den eventuella kumulativa onormala avkastningen är signifikant skild från noll med student t-test samt om det föreligger skillnader i medelvärde i de olika undergrupperna.

In healthy dogs, heart rate fluctuates during the day. Heart rate variability (HRV) reflects the autonomic nervous system´s regulation of the cardiovascular unit. Heart rate variability shows the balance between the sympathetic and parasympathetic nervous system, also called sympathovagal balance. Heart rate variability can be measured by time domain - and frequency domain analysis. In a time domain analysis you study the beat-to-beat-interval (RR-interval) in an electrocardiogram (ECG), while a frequency domain analysis can be used to determine the size of the variability.

Background: The international accounting standard regarding goodwill gives opportunities to several accounting procedure choices, as goodwill is a complex, intangible asset. The valuation of goodwill affects equity/asset ratio and income statement, which gives that the stakeholders? impression of the group?s financial statement is affected by the valuation of this asset. It has been pointed out that difficult economic times bring impairment loss to the fore. During financial crisis, equity/asset ratio may be significant as the economy of the groups is expected to be strained.Purpose: The purpose of this essay is to explain the appearance of the possible relationship between a group?s impairment loss for goodwill and their equity/asset ratio, during financial straits.

The purpose of this bachelor degree thesis is to analyze technical issues associated with an implementation of a low sloping trash rack with narrow spacing. A hydropower plant in Umea?lven was used as a case study. The basis for the study was a model where trash racks were dimensioned for inclinations between 25 and 45 degrees. Corresponding head loss, durability and water speed through the rack were then determined for each inclination.

Accounting has been critized for being one of the leading factors in the latest financial crisis. One of the primary problem areas was identified as delayed recogonition of losses on financial instruments. Consequently, a new impairment model is being developed and is to be namned expected loss model. The difference from the present model, incurred loss model, is that it takes losses into consideration on an much earlier level. Even though the model may be theoretically feasible, in practice it may implicate a number of issues.

This literature review summarizes available data on infection with the parasitic roundworm, Ascaridia galli, as a cause of disease in poultry, including the consequences of a conversion to alternative production systems. Ascaridia galli has a direct life cycle with resistant eggs that survive and are easily spread in the environment, especially in systems with bedding materials where the faecal contact is high. The infection is usually subclinical but depending on the infection dose, the symptoms range from weight loss and diarrhea to mortality. Factors such as the feed composition and genetic variation among different hybrids clearly affect the establishment rate of the infection. Ascaridia galli will probably become an increasing problem, with a shift from the traditional battery cages to alternative systems where the risk of re-infection is high.

The purpose of this report was to compare Lilluns egg production with other Swedish egg producers based on the flow of nutrients (nitrogen, phosphorus and potassium) in the egg production systems. The main focus in the report was the utilization rate of the forage and the excess of nutrients per kg egg. Additionally, the purpose was to identify the environmental impact from Lilluns egg production and compare the results with other egg producers. The inflow of nutrients associated with forage and poultry was compared with the nutrients that were exported from the production. All of the egg producers in this study had an excess of nutrients.

The aim of this study was to determine a method to habituate treadmill-naive Labrador Retrievers to walk and trot on a treadmill. 17 Labradors was equipped with reflective markers glued to the skin. Their motions were captured with six 240 Hz infra-red cameras as they walked and trotted on a treadmill three times a day for two days. Also the heart-rate was recorded. We then used QTM and custom built software to analyze the measurements.

Abstrakt The yield curve as a forecasting tool for inflation has been thoroughly investigated. However, most of these studies considered only the major economies, such as the U.S. economy or the major European economies and not a small open economy such as the Swedish. The Swedish economy should be much more affected by the world economy then the bigger economies. The purpose with this study is then to investigate whether the Swedish yield curve, or the Swedish interest rate, can be used as forecasting tools for the Swedish inflation.

The wild boar Sus scrofa population in Sweden has increased rapidly in the last decades which has led to conflicts among stakeholders, for example due to crop damages in agriculture. Thus, there is an urgent need of quantified goals and effective strategies for wild boar management. To develop such strategies, knowledge on population dynamics is fundamental. In this study a deterministic matrix model was used to estimate population growth, based on previously published data. The exponential growth rate for a wild boar population was calculated to 1.48.

This literature review summarizes available data on infection with the parasitic roundworm, Ascaridia galli, as a cause of disease in poultry, including the consequences of a conversion to alternative production systems. Ascaridia galli has a direct life cycle with resistant eggs that survive and are easily spread in the environment, especially in systems with bedding materials where the faecal contact is high. The infection is usually subclinical but depending on the infection dose, the symptoms range from weight loss and diarrhea to mortality. Factors such as the feed composition and genetic variation among different hybrids clearly affect the establishment rate of the infection. Ascaridia galli will probably become an increasing problem, with a shift from the traditional battery cages to alternative systems where the risk of re-infection is high.

The expansion of the Swedish hydro power has contributed positively to the reduction of the environmental impacts from the fossil fueled power production. In the same time the extensive expansion has been proved to cause negative ecological and local environment impacts of a stream. This, in turn, has been affecting the biodiversity and fish stock negatively, which has been reduced. One of the underlying problems is the lack of possibility for the fish to pass the plants, but it is also directly correlated to the mortality rate of the fish passing through the turbine, which this study is investigating.The mortality rate has been computed for three different locations in Sweden, Untra, Tännfallet and a third one whose location is confidential, and is denoted as Case 1, 2 and 3. The model used to calculate the mortality rate in this investigation is based by existing blade strike models and knowledge and are investigating the death due to mechanical injuries from collision with a runner blade in the turbine.