This thesis presents the implementation of a knowledge base system for rough sets [Paw92]within the logic programming framework. The combination of rough set theory with logic programming is a novel approach. The presented implementation serves as a prototype system for the ideas presented in [VDM03a, VDM03b]. The system is available at "http://www.ida.liu.se/rkbs". The presented language for describing knowledge in the rough knowledge base caters for implicit definition of rough sets by combining different regions (e.g.

The purpose of this masters thesis is to evaluate the retrieval effectiveness of three different search engines on the Internet: Google, Yahoo! and MSN Search. We have constructed 25 topics and queries with varying contents, in order to test the width of the search engines as much as possible. In every search we have evaluated the first 20 hits in each of the search engines. The measures we have used are precision and cumulated gain. Precision is based on a binary scale and cumulated gain is calculated by means of a non-binary relevance scale.

3D modeling is a common tool in landscape architecture. Today, there have been new ways in which virtual 3D models are successful tools in the dialogue with the public. These new methods involve children and young people who are groups that is hard to reach and engage in citizen dialogues. The purpose of this work was to investigate how a virtual 3D model works in the landscape architect?s communication with the public through the project Gruvstadsparken in Kiruna. Through workshops, I wanted to communicate Gruvstadsparken to get ideas from participants on how the park can be used and be revisited.

This essay addresses and treats the employer's obligation to work adaptation for people with a physical disability according to discrimination law and the work environment law. Furthermore it also treats the employer's obligation to rehabilitation of employees that has a reduced working ability as consequence of their work. The essay also intends to investigate if there are any differences in the employer?s obligation to work adaptation when recruiting and the employer?s obligation to work adaption for an existing employment. In this work, there is a background chapter which describes the UN and the European Union's approach to work reduction ability and disability. Furthermore, there is a detailed description of the work environment law, the discrimination law, the social insurance code and the employment protection legislation.

The aim of this essay is to study the decision making process and implementation of the principle of political participation and influence for Roma minority in Sweden. The results regarding the decision making process is structured through a discourse influenced policy analyses. Problem picture and recommended measures in the political documents representing the decision making process are analysed through theories of minority rights and equality. The implementation is seen through, by the author given minority discourse and the work in the roma council and analysed by the same theories already mentioned.The results show that regarding the decision process the aim of art.15 in the framework convention is based on the idea of equality while the Swedish documents relates more to an idea of the right to speak for the group. Regarding recommended measures, the framework convention gives several recommendations on specific measures for political participation while the Swedish documents focuses on the general politics of the state.

Investment in hedge funds is a relatively new phenomenon for investors compared with other forms of savings. In recent years, the interest has increased among investors in investing their money in hedge funds, given the protection against declines in the market they are aiming for. Their main purpose is to generate a high return at a low risk regardless of market trends. This they can achieve by having fewer restrictions that offer more flexible investment strategies and freer investment opportunities.The purpose of this paper is to identify how the selected hedge fund strategies have performed during the recent economic downturn. We also want to clarify the claim that hedge funds exhibit a positive absolute return regardless of what the market is performing.In order to answer the purpose of the essay and its problems, we have used a quantitative method with a deductive approach in the processing of data.

NCC has given us a commission to investigate a planned housing area in Haga, Karlstad, situated close to the traffic route Hagaleden and the railway. The housing area consists of one hundred apartments in five different houses. The houses are linked to each other by balconies with glass panels. A long carport is situated between Hagaleden and the housing area to absorb part of the noise from the road. The design of the housing area is creating a silent backyard.

The ski resort is a business unlike any other. While providing the customer with a service, it produces the service in a manner that in many respects resemble the traditional producing company. Therefore, since the challenges facing the ski resort are a mixture of what can be found in these different environments, this study aims to investigate the applicability of Lean principles in this context. With a qualitative approach based on direct observation, combined with survey data from 2819 respondents, we evaluate the expected effects on customer value of ten commonly defined Lean principles. The study finds that although Lean theory can help disseminate customers throughout the resort and provide greater transparency, the nature of the operations calls for caution.

My purpose for this essay is to examine what factors are considered to have high influence on motivation to study and what measures can be taken to enhance student?s motivation to study from a student perspective. The main source of theory for this study has been the classification of motivational factors that has been based on Herzberg?s twofactortheory with complementary theoretical sources. The study is based around two research methods, one survey together with complementary student interviews. The empirical material consists of 118 completed surveys together with nine student interviews. The study?s results have found that students find the main source of rising motivational level originates from the professional role of the teacher. Additionally the students find the main source of subsiding motivational level originate from rising level of stress and uninspiring teachers.

In what way has the ethnic housing segregation changed from the 1970´s until today and has the politics concerning these matters dealt with the ethnic segregation as a phenomenon that occur due to free choices of ethnic groups or as a stigmatization and marginalization of ethnic groups? To be able to find out what actual changes there are to be seen in the political measures regarding the ethnic housing segregation from the 70´s until today, I have made a discoursive investigation of some of the states official investigations from each of the decades. I chose to focus on a qualitative analysis and my theoretical framework consists of theories considering grouprights as well as structural and cultural explanations.I realize that the changes have been proportionately high retorically, but the actual changes have not been that obvious. I find a retorical development that has changed from the idea of the great impact of the immigrant in the ethnic segregation process, at the same time as huge differences between groups emerge, to establish a gap between us an them and a stigmatization of ethnic groups. The development somehow seems to have reconnected to the first stage.

Every year an avorage of 40 000 Swedes fall ill with different forms of cancer. Chemotheraphy has an effect on the tumour cells as well as the healthy cells in the body, this causes many side effects which can be very problematic for the patient. The study was carried out in order to indicate the care measures that are taken to deal with the side effects i. e stomatit, loss of hair and sickness/vomiting, that are connected with chemotheraphy so that the outpatients will experience a quality of life. The method used was a qualitative interview with six nurses from the South if Sweden, all of whom are working with chemotheraphy patients.

BACKGROUND: A Pressure ulcer means much suffering for many people. It also leads to big economical costs for the society. Therefore it?s of great importance to prevent pressure ulcers. If pressure ulcers are to be prevented nurses need to have sufficient knowledge about preventive strategies.

The aim of this master?s project is to explore ways to perform piano music conceived dramatically. I do this through performance of Beethoven?s Appassionata Op. 57 and of Scriabin?s Piano sonata no.

The aim of this study was to develop and psychometrically evaluate an instrument for measuring the impact from chronic pain on daily life. Traditionally psychometric evaluation is done with parametric methods even if the items are ordinal data. In this study the instrument to be developed is solely based on ordinal data, and the psychometrically evaluation is done with both traditional methods (i.e. parametric statistics) as well as with non-parametric methods. These two different ways of psychometrically evaluation are then compared with each other.

The use of Internet by children and teenagers has become a special field of interest. Certain risks are associated with young peoples use of this media and national and international measures have been taken to assess and counter these risks.Library and informationscience have approached the subject of risks by looking at different software´s, so called Internet filters, that is used to control and censor the access to Internet based resources. In the USA, where public services and institutions that provide Internet resources to children and youth have started to require censorship of the Internet, a debate has arisen concerning the use of so called Internet filters.The theoretical basis of this master´s thesis is related to the conception of risk, gender and childhood. The focus of the paper lies on young peoples use of information and communication technology (ICT) and how risks associated with young peoples use of the Internet is constructed by different parties involved in supplying Internet resources. By means of a case study at a primary school in Skåne and at the company Netscan in Malmö.