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.

Bakgrund: Globalt sett är HIV/AIDS en utbredd sjukdom som orsakar stora påfrestningar på varje individ som drabbas. HIV/AIDS har blivit vår tids mest stigmatiserande sjukdom då den är kopplad till starka tabun. Syfte: Att beskriva sjukvårdspersonalens stigmatisering och diskriminering av patienter med HIV/AIDS utifrån ett patientperspektiv. Metod: Systematisk litteraturstudie där sökningar utfördes i Cinahl, Pubmed, PsycInfo, Science Citation Index Expanded samt SveMed+. Sökningarna resulterade i 11 kvalitativa och tre kvantitativa artiklar relevanta för syftet.

Effekterna av psykoterapi har visat sig positiva i en mängd olika studier. Syftet med föreliggande studie var att undersöka potentiella prediktorer för terapeutisk framgång bland psykoterapipatienter från den svenska psykiatriska öppenvården. Patienter kategoriserades till tre olika utfallsgrupper kliniskt signifikant förbättring, reliabel förbättring, och svarade inte på behandling genom att använda Reliable Change Index och GSI av SCL-90 som kriterievariabel. Grupperna jämfördes med hänsyn till patienternas självskattningar, terapeuternas bedömningar, terapeutvariabler, och enhetskarakteristika. Variabler som visade på signifikanta skillnader mellan grupperna inkluderades i en multipel diskriminantanalys.

Today's urban centers become denser, which contributes to higher demands on sound and noise. It is therefore highly relevant to build homes with good sound environment while maintaining living space. This thesis aimed to reduce the current concrete walls and see how the mass law affects the reduction index value and flanking transmissions. Handmade calculations were calculated according to the Swedish standard SS-EN 21354-1, where only air sound was calculated.Calculations we­­­re performed on wall elements with different weights and thicknesses, and compared with results from Bastian.In Bastian calculations of flanking transmissions were also made, this was made to see the impact of the flanking transmission when changing the mass per unit area. Mass law's impact was examined by flanking transmission and the result shows that they are not affected as long as the ratio between the thickness and the density remains the same.A questionnaire survey was conducted to determine the actual sound experience; this questionnaire was conducted on three concrete buildings in Växjö.

The aim of this study was to describe the prevalence of gingivitis, periodontitis and dental caries in individuals with type 2 ? diabetes. The study was conducted in a form of a general literature review with the restricted to the following conditions: human studies, English, and articles published between 2007 - 2012. Articles lacking a control group were excluded. The data were collected through searches of the medical database PubMed. A compilation of 11 scientific articles was examined.

The purpose of this essay is to study causes for the lack of political trust in Europe and especially in Sweden. The essay starts with a presentation of two theories about the reasons for low political trust. Robert D. Putnam among others presents a theory that gives social capital an important role when viewing the low political trust. As Putnam sees it a person that participates in any kind of organization, political or not, develop trust for other human beings that in the long run affects political trust.

The requirements for operative planning activities are increasing. The forest industry wants to gain better control over wood flow. A felling that is more market adjusted is desirable. However, this causes problems in the operative planning process because of the data collection methods used today. Data about timber assortments and data about the distribution of the tree diameter, etc., are often lacking. Airborne laser scanning is used to a greater extent than before for estimation of forest variables and should perhaps be used to the same extent in operative planning activities as well.

Due to the growing wild boar (Sus scrofa L.) population in Sweden there has been an increase in wild boar related traffic accidents, damage on cropland, and conflicts regarding the management of the wild boar. Knowing what makes the wild boar reproduce and survive more or less successfully in different geographic areas is an important part of managing the population. According to previous studies the wild boars rate of increase varies from county to county. The aim of this study was to test, on the county scale level, if landscape composition and diversity as well as people and hunter densities might be the reason for this variation. The first hypothesis was that a big proportion of forests and cropland would increase the rate of increase.

Forecasting stock market returns is an interesting topic since more and more Swedes enter and invest in this market. Theory implies, however, that such exercises should be impossible. The aim of this thesis is to investigate the possibility to forecast future stock returns by looking at macroeconomic variables? history. The study is limited to the Swedish market as it is based on the OMXS30-index which represents the 30 most exchanged stocks on Stockholms¬börsen, the Swedish stock exchange.

This thesis analyzes and discusses the role of institutions concerning countries' abilities to create economic wealth. The countries that we are analyzing are the former members of the Warsaw pact and former Yugoslavia. These countries are referred to as transition countries. In order to analyze the transition countries institutional structure we are using Douglass C. North's theory regarding institutions and institutional building.

Large amounts of birch-timber are imported to Sweden, from particularly the Baltic States, since the domestic production can?t support the pulp industry. The goal of this study was to show the potential of birch and the area?s most suitable for birch production. The study was limited to Gävleborg County. Using site characteristics, site index (SI) for birch was estimated on all National Forest Inventory plots in Gävleborg County.

The aim of this paper is to examine the capacity for ethical reasoning of Swedish certi-fied auditors in the five largest accounting firms in Stockholm, and also how ethics courses affect the auditors' ability to ethically statement. To calculate the auditors ability to ethical statement, questionnaire has been used. The questionnaire is based on a psychological instrument, the so-called Defining Issues Test. At the beginning of the questionnaire some questions are asked about the ethics courses. From the questionnaire a calculation was made of an average index called p-score (Principled score).

Hedgefonders investeringsstrategier och överavkastning En hedgefond är en fond med ett avkastningsmål som är absolut och oberoende av marknadsriktning då förvaltaren inte jämför hedgefondens avkastning med ett index. Denna typ av fond har vanligtvis stor flexibilitet i förvaltningsinriktningen, de kan använda sig av såväl långa som korta positioner samt utnyttja belåning och derivat för att ytterligare öka avkastningen. Hedgefonder har under 1990-talet växt kraftigt och som en följd av detta har hedgefonder blivit intressanta som studieobjekt för akademiska undersökningar och forskning. Intressant ur en investerares synpunkt är att studera om hedgefonder kan påvisa signifikanta överavkastningar. Vi fokuserar på fondernas avkastning i relation till vilken investeringsstrategi som fonden har valt och utvärderar fonderas prestationer med hjälp av tre ekonomiska modeller; CAPM, Fama-Frenchs trefaktormodell samt en betingad trefaktormodell.

Syftet med uppsatsen är att empiriskt undersöka ifall det är möjligt att göra en överavkastning, genom att konstruera tre olika utdelningsbaserade handels-strategier. Den första handelsstrategin innebär att de företagen med den högsta direktavkastningen köpes och de med den lägsta blankas. Den andra handelsstrategin innebär att de företag med den största positiva utdelningsförändringen köpes och de företag, vilka har den största utdelningsminskningen, blankas. Den tredje handelsstrategin innebär att de företagen med den högsta utdelningsnivån köpes och de med den lägsta blankas. MetodEn eventstudie utförs med deduktiv ansats och kvantitativ metod.

The Multispectral Canopy Reflectance Model (MCRM) by Kuusk (1995) has beenused to simulate the reflectance of a sugarbeet canopy. The simulated reflectancevalues show high absorptance in the VIS area, compared to field measurements, andhigh reflectance values in the NIR area. The errors may be due to overestimation ofclorophyll content in the sugarbeet leaves and scattered light during fieldmeasurements. The estimation of the clorophyll content where carried out using thePROSPECT-model by Jacquemoud & Baret (1990).During the vegetation period, the state of the canopy moves towards a closed canopy,with sparse vegetation in spring. The MCRM-model was used to perform a ?spring?simulation, which was compared to the original simulation.