This literature study aims to examine the existence of cancer stem cells in breast cancer. The cancer stem cell theory states that there is a hierarchical organization within a tumour, in which a small subpopulation of the cells can initiate new tumours and maintain tumour growth whilst the bulk of the tumour cannot. These tumour initiating cells have shown to possess many characteristics similar to those of adult stem cells, which is why they are often referred to as cancer stem cells. Both cell types have the capacity of asymmetric division and have shown to possess mechanisms of resistance to both apoptosis and cancer drugs. The cancer stem cell theory elucidates many biological aspects such as the heterogeneity of tumours and the relapse of many cancers after what appeared to be successful treatments.

This thesis discusses main problems associated with dictionary-based Cross-Language Information Retrieval as lexical and translational ambiguity of query terms, translation of compounds and phrases, dictionary limitation. The purpose of the study is to investigate how query structure influences the effectiveness of CLIR regarding performance of three query types: original query, unstructured query and structured query. Query structuring refers to the application of #syn-operator to group query terms. The study comprises an experiment that was performed in the InQuery IR system with TrecUta database that contains 550,000 news articles from different American newspapers. 24 topics were used for the experiment.

This thesis evaluates and compares the retrieval effectiveness of the two search engines Google Scholar and Scirus, which both specialises in indexing scholarly material on the web as well as journal articles. Thirty search queries are used and the first twenty retrieved documents for each query are examined for topical relevance and scholarly content. The search queries are based on legitimate information needs taken from a scientific questionbox on the web. Queries are expressed with advanced search operators and are the same for both search engines. Precise relevance criteria are set up and a binary scale is used when judging.

This paper is a comparing study of the retrieval effectiveness of the search engines Google, Google Scholar and Scirus. The aim is to find out how good they are at retrieving relevant academic material in the research-field of Library and Information science. The thirty search questions where based on actual information needs collected from exams within the field of Library and Information Science. This method was used to prevent that none of the search engines were given an advantage because of construction of the information needs. The first twenty retrieved documents on the retrieval lists are examined for academic content and relevance.

This thesis concerns the feminist consciousness-raising novel of the 1970s. The aim of the thesis is to examine narrative strategies which, according to the consciousness-raising practice, are adapted to enlighten the political aspects of the personal. The focus is both on strategies that address the protagonist and on those that address the reader. I also examine in which way the use of these strategies is dependent upon ideas of class and gender.I find that the narrative situation, in this case the relationship between the protagonist and the narrator, is central to the use of the consciousness-raising narrative strategies. In Anna-Lisa Bäckmans Fia i folkhemmet och Fia med manifestet, the protagonist Fia is positioned as an oppressed working-class woman, which results in a narrative situation that gives the protagonist a limited space of action and that gives the narrator the power to interpret the experiences of the protagonist.

The aim of this thesis is to interpret and discuss the weapon-graves of Viking Age Birka. The weapon-grave phenomenon is deemed differential in relation to the rest of the grave-material of the site, and thus the questions that motivate the thesis is: who was buried with weapons and why? Further questions arise regarding the social aspects of individuals who were buriedalong with weapons. The theoretical approach will be to evaluate any differences in 'social class', 'social age' and 'gender' between the weapon-grave contexts. By conducting qualitativeand quantified analysis of the grave-goods, this thesis adresses both overall and detailed patterns in correlation and constellations between weapons, other grave-goods and terms of burial..

This study discusses and examines the alternative teaching materials in religion class amongst seven teachers in Stockholm region. As religion is a complex subject to both learn and to teach it may be beneficial to use alternative texts to show the diversity of the subject. The aim of this study was to examine why teachers use news articles and other articles from daily magazines in their religion class. I also examined how the teachers motivated their choices of teaching materials. The study is qualitative and the empirical work was done by interviewing seven teachers in religion.

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.

The purpose of this study is to compare different ways to teach mathematics in the school's lower age groups, and to examine whether certain practices increase students' desire and motivation to learn the subject. The questions used to determine the purpose is the following: What vision has the students in the class at maths? How does the teaching of mathematics in the class look like?What vision has the students in the class at working with different approaches in education?Does the traditional approach  and the options that I am examining meet the steering documents requirements?  The essay is organized as a qualitative study. The study was conducted in an elementary school in Sweden, third grade. The methods used included interviews with students and observations in the classroom.

The purpose with this essay is to evaluate the retrieval performance between Googles basic search and the advanced search functions. A secondary purpose is to evaluate the differences between the binary relevance scale and a 4- point scale. The basic search is defined as a search with two terms combined with the Boolean operator AND. The advanced search is based on search functions that are adequate to compare to the basic search. They are categorized as AND-searches, OR-searches, AND and OR-searches, exact phrase, and depending on where the terms occur on the page.

I wanted to look at school-children's perspective of prehistory. I also wanted to look at the literature at their disposal, provided by the schools.In this essay I am looking at a school-class in the fourth grade from a school in Malmö and a fifth grade-class at a school in Klågerup just outside Malmö. I am trying to determine the student's view of what prehistory is all about, as well as how their own school-literature is connected to that knowledge. Six books in all were examined. The essay is concentrated on prehistory and only at those two schools.

Within the field of welfare research, few people take into account both the aspect of gender and class. Thetraditional class-oriented research has a one-dimensional perspective on gender and the feminist welfare researchrarely carry out large comparative studies. A multi-dimensional perspective on the construction ofgender and class would benefit from both the feminist and class welfare-oriented research, and contribute toincreasing the knowledge about the individual's experience and attitudes to work and work time. The aim ofthis paper is to examine the correlation of the intersectional relationship between sex / gender position andclass position with the attitudes and motives for working time reduction. Especially in, (1) the value in work,and (2) the attitude to a high number of working hours, as well as (3) its combined effect on the conflict betweenwork and family.

In the fall 2011 a new grading scale will be implemented in the Swedish school. A government bill suggests a change of the scale from a three- to a six-point scale. The students will also be graded from the sixth class instead of today?s eighth. From the first year of the compulsory school the pupil will get a written judgment.

The purpose of this thesis is to examine the performance of different types of queries in the AltaVista query-based search engine. Thirty information needs have been collected from an ask-a-question service on the World Wide Web, which means that they are based on real users information needs. This is done to avoid partiality in the study. The author has invented different types of queries for each and every one of the information needs in accordance with the search syntax available for AltaVista. The types used are Boolean expressions, queries including proximity operators, phrases and queries directed towards a specific field.

The purpose of this study is to portray conflict managing associated with children in a small class and what problems they may face each day at school. What types of conflicts and what consequences do teachers practice? This study is based on these following questions:Is there any difference for solving/measure for students with psychosocial problems or ADHD in a conflict or does teachers still works with the same methods?What types of conflict solving does schools use?What is important to consider with students in a small class who has psychosocial problems and ADHD to prevent conflicts?Summary: To answer my questions in this study, I´ve used qualitative methods, interviews and observations. I have used my cellphone for recording the interviews so that all content from the informers are accurate. My theoretical points concerns on having strict rules both inside and outside the classroom.