The aim of this thesis was to evaluate the music downloading service Musikwebb regarding its indexing and retrieval effectiveness. This was done by performing various kinds of search in the system. The outcome of these searches were then analysed according to the criteria specificity, precision, recall, exclusivity and authority control. The study showed that Musikwebb had several flaws regarding its retrieval effectiveness. The most prominent cases were the criteria exclusivity and specificity.

In query expansion (QE) terms are added to an initial query in order to improve retrieval effectiveness. In this thesis we use QE in the sense that a reformulation of the query is done by deleting the terms in the initial query and instead replacing them with terms from the documents retrieved in the initial run. The aim of this thesis is to, in a experimental full text invironment, study and compare the retrieval result of two different query expansion strategies in relation to each other. The following questions are addressed by the study: How do the two strategies perform in relation to each other regarding recall? What may be causing the result? Are the two strategies retrieving the same relevant documents? Two strategies are designed to simulate a searcher using automatic query expansion (AQE) either with or without relevance feedback.

The gaming market is growing and the number of people, men and women, who play computer games, is also increasing every day. In addition, computer games are also interactive media which leads to the fact that product placement in computer games attracts and is used more frequently by marketers. It is therefore important for marketers and game developers to understand how product placement in computer games affects players' attention and attitude towards the brand or product that is product placed. We therefore examine how product placement in computer games affects players' recall of and attitude towards the brand. The aim is to help companies and game developers to see the effect of product placement in computer games on players and thus product place more efficiently.

The intention of the essay was to see what Web users? comprehension might be when watching four videos that are published on the Swedish Government?s Web site. One video contains an interview with Lena Hallengren, Minister for Youth Affairs of the Swedish Government, and in the other three Ulrica Messing, Minister for Communications and Regional Affairs of the same government, gives speeches about the governmental issues she is responsible for. The comprehensions that were examined are those concerning the forms of presentation of the videos, the ministers? appearances, the videos abilities to create and maintain the Web site visitors? interest, and the visitors? behaviours and conducts while being in contact with the Web site.

Denna studie följer elever som deltar i bänkinteraktion omkring matematik med sin lärare. Syftet med studien är att undersöka hur elever beskriver att få enskild hjälp som stöd för sitt lärande. Jag söker möjligheter och hinder som uppstår i lärar- elev interaktioner. Elevernas erfarenheter kan bli en utgångspunkt för hur matematiklärare och speciallärare kan tänka omkring undervisning i klass eller undervisning av elever i behov av stöd.Studien har en sociokulturell ansats och är gjord enligt metoden stimulated recall, som i denna studie innebar videoinspelade bänkinteraktioner i kombination med intervjuer omkring inspelningarna. Eleven fick se videoklippet efteråt och med egna ord berätta vad som hände och hur eleven hade tänkt i situationen. .

The aim of this thesis is to examine how thesauri constructed with latent semantic indexing LSI are performing when used for query expansion. There is a well-known problem with synonymy in information retrieval and one solution to this problem is to use a thesaurus. In this thesis thesauri are created automatically to find statistically related words and not only synonyms. LSI is a method that uses singular value decomposition SVD to reduce dimensions in a matrix and find latent relationships between words. We constructed nine thesauri and used them for query expansion in a Swedish database, GP_HDINF.

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.

Time Perspective is related to mental and physical health. This study examines the relationship between Time Perspective and perceived stress where Time Perspective was expected to predict the level of perceived stress. Past-negative, Future-negative, Future-positive and present-fatalistic were expected to be positively associated with perceived stress while Past-positive and present-hedonistic were expected to be negatively associated. Measures from the self-assessment forms S-ZTPI, PSQ-recent and CES-D from 445 participants (242 women, 203 men) between 60-90 years were used to examine the hypothesis of the study. Two hierarchical multiple regression analysis confirmed that Time Perspective is associated with perceived stress and in part 2 explains it's variance, one when adjusting for demographic data (.R = .37) and the 2 other when adjusting for demographic data and depressive symptoms (.R = .13).

Vårt syfte med denna studie är att undersöka hur pedagoger i en Reggio Emiliainspirerad förskola uttrycker möjligheter att använda naturmiljön som inspirationskälla till lärande i och om naturen. Genom kvalitativa intervjuer med hjälp av metoden stimulated recall har fyra pedagoger vid Spira förskola i Luleå delgivit oss deras uppfattningar om ämnet. Materialet har bearbetats och analyserats med hjälp av meningskoncentrering. Resultatet visar att det ursprungliga syftet med en planerad lärandeaktivitet inte alltid kommer fram i genomförandet. Vidare visar resultatet att pedagogerna uttrycker möjligheter till lärande när barn vistas i naturmiljö.

The purpose of our essay is to describe and analyse the experience of adults growing up with alcohol abusing parents and how their adult lives have been affected by this. The essay consists of both theoretical and empirical studies and we have used a qualitative method. We used a semi structured interview where we interviewed eight persons. We used symbolic interaction to analyse the collected data. The result is to a large extent consistent with previous research.

The purpose of this thesis is to examine and analyze the communication effects from the campaign SAS EuroBonus American Express Card. Our aim is to measure the advertising effectiveness of the campaign.To gather primary data we have conducted a quantitative survey at Arlanda Airport, where the campaign is mainly located. The survey included a total of 253 respondents representing the population at Arlanda Airport.Our conclusion is that there is an awareness of the presence of American Express at Arlanda. The company is clearly dominating among its competitors regarding visibility at the airport. Despite this, only a moderate degree of the travelers recognize the pictures from the campaign.

The purpose of this Masters thesis is to examine the performance of queries that are expanded by synonyms and hyponyms from Svenskt OrdNät, the Swedish version of the Princeton WordNet. Four different types of queries were constructed: a baseline query S1, the baseline query expanded with synonyms S2, the baseline query expanded with hyponyms S3 and finally the baseline query expanded with the synonyms and hyponyms used in S2 and S3. The terms for expansion were picked by hand. The queries were executed in the Query Performance Analyser QPA, a tool used in IR education and in experimental IR research for analysing and comparing the performance of individual queries. 20 topics from the test collection GP_HDINF were chosen for the experiment.

This Masters thesis deals with query expansion in an online library catalogue. The aim of the study was to compare the retrieval effectiveness of four different query types when applied to the online library catalogue of the University College of Borås. The query types were: an initial query, the initial query with right hand truncation, the initial query expanded with synonyms and finally the initial query expanded with synonyms and right hand truncation. 24 topics were formulated, and four queries for each topic were constructed. The records retrieved by the searches were judged with regard to topicality, and were judged to be non-relevant, partially relevant or relevant.

Descartes sharp distinction between body and mind has had a severe influence on the culture of the western world. We now have a constructed system of knowledge that discards perception asunreliable and instead admits only deduction as the adequate method of understanding oursurroundings and ourselves.But what are we, if not human?And what would our lives be like without our dreams, the passions of our hearts and the sensationsof our sense organs?Irrational as it all may seem, these aspects form our existence, giving us pleasure, experience andknowledge beyond what we plan or try to predict. It is the fuel that keeps us going, fighting, loving.So how come we seek to explain everything? How come we seek the approval of others in matters we should be confident enough to judgeourselves? Why can't we embrace all the aspects of what it means to be alive? I state that the society and culture of the western world offers great possibilities for expression andcommunication.

The objective of this paper is to describe and analyze female irregular immigrants and their experience of how relationships with other people affect their lives and identity.A qualitative method is used in the study, because my main purpose is to analyse the respondents? lives and life experiences. The analysis is based on a symbolic interactionism perspective. The results are also analyzed based on previous research and the concepts underlying the paper; irregular immigrants, discrimination, power and identity.In summary, the respondents have a clear picture of how they live and experience their relationship to others and themselves and how this affects their lives and identity.Their experiences affect their lives and influence their behaviour and identity when they interact with others. Their own view of their situation means that they are afraid to seek care or report sexual abuse, threats or other similar conditions.