Objective: The aim of the study is to describe pupils' understanding of the mathematical concept of function. How do pupils define the concept of function? What images of the concept of function evoke when they solve tasks, which involve identifying and constructing functions?Theory: A student's thinking about a mathematical concept depends on more than just the formal definition of the concept; therefore Tall and Vinner introduce the term concept image to describe the role cognitive structures play when students learn about concepts. The cognitive structure includes all mental images, associated properties and processes that an individual associates with a given concept. According to Sfard, an individual's understanding of mathematical concepts may have different character: an operational conception, where a concept is conceived as a process and a structural conception, where the given concept is conceived as an object, that is, as a whole.Method: 16 pupils at the Science Program at two different upper secondary schools inSweden answered a questionnaire on the mathematical concept of function.

The Capturetheory wants to give an alternative explanation for the need of regulation. From this point if view the government does not have enough information to make an optimal regulation. There is a possibility for different interest groups to take advantage of the political arena by rent- seeking behaviour. An industry may be willing to be regulated to protect itself from competition. The objective of this paper is to account for the pros and cons of the theory of regulatory capture and also if it can be applied to the Swedish market of pharmaceuticals.

The aim of this study is to examine how the public responds to the journalists? use of subjectivity in the reporting of broadcasting news. The investigation is a qualitative study based on nine interviews with respondents in ages of 21 to 25 from different parts of Sweden. After showing five examples of news reporting with a subjective approach, the respondents gave their look on the use of subjectivity. The theoretical frame of the investigation is founded on the theory of framing (de Vreese, 2005; Entman, 1993) and the discussion concerning the terms objectivity and subjectivity (e.g.

Syftet med studien var att undersöka vilka faktorer som personalen inom dagligvaruhandeln upplevde som viktiga för arbetsmotivationen utifrÄn Herzberg`s tvÄfaktorteori. Studien undersökte Àven om det fanns samband mellan inre faktorer, yttre faktorer och personlighetsegenskaper. En enkÀtstudie genomfördes dÀr 74 medarbetare inom dagligvaruhandeln i Mellansverige deltog. Ett t-test visade att skillnaden mellan inre och yttre faktorer inte var signifikant. En korrelationsanalys visade pÄ samband mellan inre faktorer, yttre faktorer och personlighetsegenskaper.

In the political world of today the discussion of Just wars are very present, since the international law and the UN Charter provides certain rules about when it is justified to go to war (jus ad bellum) and how a justified war should be conducted (jus im bello). The discussion about jus ad bellum and jus im bello derives from the theory of Just war. Both in international law and the Just war theory, focus is on interstate wars were the actors are two sovereign states. Since the end of the Cold War there has however been a change in the way wars are conducted. From interstate to intrastate warfare, where the government in most cases no longer has the monopoly over the warfare.According to these facts, my conclusion is that the Just war theory has to expand and incorporate a focus on the human rights in order to be able to meet the new standards of the new wars.

Romanies have long lived outside the fabric of society and have long been exposed to discrimination in Sweden as well as the rest of Europe. The purpose of this study is to elucidate the experiences of young Finnish romanies in their everyday lives as well as their perceptions of living as a minority group in Stockholm today. Previous scientific researchers have often concentrated their studies on the romanies as a group, so we, the authors have chosen to concentrate our research on the individual?s own experiences. We, the authors have chosen to use a qualitative approach, to give us the opportunity through using open ended interview techniques to comprehend and interpret the individuals own accounts.

This thesis investigates the underlying factors behind sexual risk-taking and non-risk-taking behavior with regard to Sexual Reproductive Health (SRH) among adolescents in Lusaka, Zambia. The Qualitative Approach was used for data collection and analysis and using the theory of Social Construction, the author explains how different contexts and aspects in the Zambian Society, that is Traditional, Socio-economic, Political, etc., influence the sexuality or sexual behavior of young people in Zambia. Hermeneutics was used to interpret the meanings in the texts/transcripts acquired through data collection and from the author?s knowledge and understanding of the Zambian historical and cultural contexts within which the participants of the research were constructed. Max Weber?s Ideal Type concept was also used to explain that each young individual?s sexual behavior is uniquely constructed by societal aspects.

In this master thesis, control algoritms using arm side sensors are investigated for an industrial robot. The sensors can be position encoders placed after the gearbox and accelerometers on the robot arms. Control strategies are discussed and evaluated for different models of the robot, after which chosen strategies are applied to a realistic model. Control algoritms using arm side sensors (LQ, dual-loop and PD-PID) are compared to a PID-controller that only uses measurements of motor position for feedback control. The comparison are done with respect to disturbance rejection, oscillation damping, robustness and tracking performance of a reference trajectory.

Changes in the society engender changes in the practice of the auditor profession. Stricter laws, more detailed recommendations, and demands from the auditor?s clients have increased. The auditor constitutes a profession and therefore it is important that there is a trust since the auditor is the one that certifies the quality of the company?s economical information.

The purpose of this study is to, from the preschool teachers? point of view, deepen the knowledge about influential factors regarding a mandatory report from preschools to the Child Protective Agency (CPA) when suspecting child maltreatment and feeling uneasiness regarding the child. The purpose is also to furthermore investigate collaboration between preschools and the CPA in Hagfors municipality. The study has the following questions: How do preschools teachers handle their suspicions and uneasiness about a child being maltreated? Which factors can be influential on whether or not the suspicions are reported to the CPA? Which experiences do preschool teachers have of collaboration with the CPA?The study is based on qualitative methods in the formof individual interviews.

The aim of the thesis is to highlight external factors to explain why the EMU was created. The external factor considered here is the monetary policy of the United States, which often conflicted with European interests. The statistical data in the thesis, as well as previous research, show that even though the EU economically in many ways had become an equal partner of the US during the second half of the 20th century, the union still faced US influence and dependence.The results of the thesis can be explained with neorealist theories on power measured as an actor's distribution of capabilities and balancing of power. An actor that is equipped with the world's leading currency is more independent from others. Other actors, on the other hand, become increasingly dependent on the major currency and the policy of its owner.

What kind of international actor is the European Union and how shall we define it? These are questions that many have tried to answer often by addressing the apparent uniqueness of the EU itself. One of these theories is Normative power Europe. A theory whose main argument is that the EU is best perceived as a changer of norms. My aim with this thesis is to test this claim and to see if the Union should be regarded as a normative power.

In 1989 the United States choose, after years of conflict, to carry out a military intervention in Panama, to remove Manuel Noriega, convicted for drug dealing and for threatening the lives of the Americans living in Panama. The aim of this study is to examine whether George H. W Bush?s arguments for the military intervention comply with the principles of the just war.The method chosen for this study is a qualitative literature study, based primarily on secondary data. It is a case study with two complementing theories, the theory of the just war and the world system theory.The result showed that the American intervention both can be justified and unjustified following the principles of the Just War Theory.

Syftet med denna litteraturöversikt Àr att göra en utvÀrdering över de mekanismer som Àr viktiga vid tumörmetastasers nybildning av kÀrl s.k. angiogenes och med vilka metoder man kan hindra dem. Tumörceller som prolifererar ohÀmmat utan att stimulera angiogenes begrÀnsas av brist pÄ nÀring och ineffektiv bortförsel av slaggprodukter och kan dÀrför sÀllan vÀxa och bli större Àn cirka 1mm. Detta medför att Àven om det kliniskt finns mÄnga smÄ metastaser i en patient sÄ innebÀr det sÀllan nÄgot problem för patienten. Om tumörcellerna dÀremot muterar sÄ att de kan stimulera angiogenes sÄ tillÄts tumörerna vÀxa sig större och förstör dÄ kringliggande vÀvnad vilket tillslut resulterar i patientens död. Mycket forskning görs i nulÀget inom ÀmnesomrÄdet och man har som mÄl att med hjÀlp av angiogeneshÀmmare göra cancer till en kronisk men hanterbar sjukdom istÀllet för den sjukdom med dödlig utgÄng som den ofta Àr idag. Den första angiogeneshÀmmaren som godkÀndes för medicinskt bruk i USA var Avastin (Bevacizumab) som Àr en antikropp som binder till och oskadliggör vascular endothelial growth factor (VEGF), vilket Àr en av de faktorer som stimulerar angiogenes. Detta fÄr som följd att de tumörer (60 % av alla humana) som uttrycker denna faktor hÀmmas i sin tillvÀxt.

The purpose of this study was to try to understand the Swedish population regarding the perceptions of the Swedish welfare system, based on the reactions that occurred after Sweden's Prime Minister Fredrik Reinfeldt's statement about raising the retirement age. Our results demonstrate that the reactions on changes in the pension system in fact rooted in a safety factor and not the change in the pension system itself, through which the Swedish welfare system acts as a safety net for the population. Further the results shows that these safety factors create a form of egoism. With an interaction between empiricism and theory, where the starting point of the material was of an inductive approach, the material abstracted into different levels from which the result emerged. The focus of this study lies in the understanding of how human beings act according to one's need for security in major changes, which may be of importance to a comprehensive understanding of changes in social structures..