The aim for the study was to examine a harwarder´s (combined harvester-forwarder) productivity when harvesting forest fuel in first thinning stands that contains Lodgepole pine and calculate the economy of the harvesting work and estimate the quality of the thinning . The field study area where located near Arvån, about 15 kilometres south ?east from the city of Lycksele. The field studies were taken place in three different stands. All tree stands had the same tree age, but the tree species combination and the density varied.

The Sweden Democrats achieved great progress in the latest election in the Swedish municipals. The party is now closer than ever concerning reaching the Swedish parliament. This thesis examines the Sweden Democrats in the Swedish municipals with the aim to find out which municipal factors that led to their progress. By looking at the percentage share of unemployment, the percentage share of foreigners, the percentage share of education, average income, traditional political colour, average age, criminality, early representation of a party hostile to foreigners, the municipal type and the sickliness in the municipals I find out which factors explain the progress of the Sweden Democrats. The thesis is an empirical quantitative study build on statistics by the help of regression analysis and diagrams.

During 2006 an estimated number of 150 persons are supposed to have been killed in road accidents caused by speed limit violations. Through Automatic traffic security control (ATK) the Swedish road administration (Vägverket) is working towards lowering the number of speed related accidents. By placing the speed cameras on roads they've managed to lower the average speed at those places. The enlargement of the number of speed cameras is based upon knowledge about for example how high the risk is for speed related accidents on the roads. The speed cameras always measure the speed in which every vehicle passes, but aren't constantly activated to register speed violations.

The aim with this report is to formulate a strategic method to optimize selection processes of DNA-samples from a faeces inventory to identify as many individuals in as few analyzes as possible, and by that keep down the costs of brown bear management. Brown bear management in Sweden founds today on results from faeces inventory and is substantially led by the county administration boards. Data from the years of 2004 and 2009´s inventories in Västerbotten was used to test and evaluate different methods in selection processes of which faeces that should be sampled. Comparison were made between making selection by chance, by spatial distribution and by calculating variations in logistic regressions coefficient b, in other words bear density and probability in finding same individual in several faeces. We can show making selection by chance is the most uncertain method.

Today Holmen Skog finds and selects suitable thinning stands using data on upper height and basal area. These figures are often based on basic forest data that has been updated with the help of growth prediction models. The problem is that these figures are not always correct. The aim of this study was to investigate if a combination of data from a profiling laser and a digital camera for low elevation photography, can be used for collecting data on number of stems per ha, tree species mixture as well as basal area weighted mean height and upper height for stands. The possibility to use these data to assess the need for thinning cutting was also investigated.Laser data and aerial photographs were collected from a helicopter operating at an approximate height of 100 meters.

Storm water is rain and melted snow that runs off, primarily from impervious surfaces.Future storm water management is facing the challenges of increased precipitation, asclimate changes, and increased areas of impervious surfaces due to the expansion anddensification of the cities. Impervious surfaces reduce the potential for water to infiltratein the ground leading to increased surface runoff and higher peak discharge.The runoff coefficient is closely related to the percentage of impervious surfaces andrepresents the maximum percentage of a catchment that can contribute to runoff. In thisstudy, the objective was to evaluate the weighted runoff coefficient for three differenturban types; apartment buildings, townhouses and residential areas and a comparisonbetween today and the 1970`s was made.The runoff coefficient was determined by manual mapping of the different surface typesin each area based on data in the form of orthophotos and aerial photographs. The surfacetypes that were mapped were asphalt, permeable areas, tiles, sand/gravel and roof.Tiles and sand/gravel were the most difficult surface types to map. In order to see towhat extent these categories influenced the weighted runoff coefficient a sensitivityanalysis was carried out and the runoff coefficient based on surface type was changed indifferent scenarios.The results of the sensitivity analysis showed that the surface types tiles and sand/gravelhad little impact on the weighted runoff coefficient which in mainly due to the fact thatthe percentage of these surfaces types of the total area is small.The result of the study showed that the largest change in the runoff coefficient occurredin residential areas where the increase in the percentage of impervious surfaces causedby new roofs in the form of porches and garages and from paved or tiled driveways.

This Master?s thesis is a comparative study of information retrieval results between three distinct search strategies in simulated automatic query expansion in a bibliographic database. Our purpose is to investigate which of the search strategies score the most effective precision and to what extent the same relevant documents are retrieved (overlapped). A thesaurus attached to the database is used to select appropriate descriptors for the baseline query formulations which subsequently are expanded with hierarchical relations. The search strategies are s1: A baseline query with two or three descriptors, s2: The baseline descriptors combined with at least one Narrower Term, s3: The baseline descriptors combined with Narrower Term and at least one Broader Term.

The general pension supplement introduced in 1960 which introduced the public pension funds in Sweden. In the late 1990s the Swedish pension system was reformed and established the current structure. Today, funds are one of the most common forms of savings in Sweden and mutual funds are the most common type.The purpose of this study is to analyze the risk-adjusted returns for the AP funds in the period 2003-2009. Study was based on five funds that are most similar and have the same mission. These funds are AP1, AP2, AP3, AP4 and AP7.The method used in this study is mainly based on a survey of the figures and measurable units of statistical methods that have been carried out by a quantitative approach.

The aim of this study was to quantify the productivity and the costs of different harvesting systems (teams), containing harvesters equipped with accumulating harvester heads and forwarders, in first commercial thinnings were an integrated harvest of pulpwood and energy wood were performed. In the beginning the plan was to study and measure 20 sites before and after harvest. Due to storms during the summer of 2010, complete data could only be obtained from 8 of these 20 sites. Seven of these sites were privately owned and one was owned by UPM, all of the sites had been pre-commercially thinned. The mean stem density before harvest was 2578 stems per ha and the mean stem volume was 0.074 m3solid over bark.On average 1518 stems/ha was harvested.

The aim of this masters thesis is to examine query expansion. Query expansion is the process of adding new terms to a query to improve the retrieval effectiveness. In this study the baseline query was expanded in five different modes. The first expansion strategy was formulated by the inflected terms as the system does not allow truncation, I have inflected the terms, e. g.

The purpose with this study is to find out how much dead wood we can expect us to find in a Russian reference river and compare with studies from Swedish streams. Dead wood are an important structure for the biodiversity in forest streams, studies have shown that population of trout can increase with up to 300 % when the amount of dead wood are increasing from 0 to 8 ? 16 LWD (Large woody debris)/100 m2. Dead wood are also an important structure for the stream character, formations of dams and pools which are important habitats and reproduction areas for salmon and brown trout. The study where taken place in tributaries to the Russian river Varzuga in the North West part of Russia outside Murmansk. Varzuga has low impact of human activity and is considered to be a reference river to rivers in northern Sweden.

Today there are many technical solutionsfor the e-commerce industry, incombination with a change in behavior ofthe end user. The consumer of todaydemands more availability andconvenience.This Master?s thesis has examined thecritical aspects of e-commercecompanies, as well as how they candevelop their e-commerce to create valuefor the end user. The aim has been toidentify the more and less importantfactors of the e-commerce business, andto investigate the extent to which thesefactors are used in the e-commerceindustry. To answer these questions, aninteractive, online questionnairecustomized for e-commerce companies wasdeveloped.

Inför år 2005 infördes nya regler för hur goodwill i företag ska hanteras. Detta ställer nya krav på hur företag ska hantera goodwill, men detta innebär också nya problem och gransknings-möjligheter för en revisor. Uppsatsen syftar till att lyfta fram svårigheterna för en revisor när denne ska granska ett av företagets gjorda impairment -test av goodwill och vilka medel som den har till sitt förfogande för att genomför granskningen. Studien grundar sig på intervjuer med revisorer och branschorganisationer. En revisor är styrd av lagar och redovisningsprinci-per när denne ska granska ett företag men revisorn är också beroende av den information som kommer ifrån företaget.

Syftet är att konstruera en handelsstrategi baserad på Contracts-For-Difference (CFD) för att utnyttja de möjliga samband som föreligger mellan oljepris och SEK/USD växlingskurs.Uppsatsen baseras på en induktiv ansats med kvantitativ metod. Slutsatser dras från utifrån de data som har bearbetats.Korrelationen mellan olja och valutan SEK/USD är starkt negativ. Funktionaliteten hos ?Moving Average? som indikator för trendskiften bedöms som relativt hög. Handelsstrategin som har konstruerats uppvisar positivt resultat efter fem års simulerad handel.

This paper analyses how Swedish fine-art oil paintings sold at auctions has performed as a monetary investment during the period autumn 1985 until spring 2006. An average price technique as well as a hedonic regression technique, applied to a sample of 19 213 auction sales, is used to construct price indices. The indices show somewhat different results, which is explained by the inability of the average price model to adjust for relative differences in quality between periods. The hedonic regression model on the other hand captures this effect, why the hedonic index is applied in a financial return model. By adjusting for transaction cost, the financial return of an average investment in paintings is calculated.