Målet för detta examensarbete har varit att förbättra driften av en motkolvs tvåtaktsmotormed HCCI-förbränning. Huvudfokus för arbetet har varit på gasväxlingsprocessen, dåfrämst avgasprocessen.Motorn har studerats med utgångspunkt från hur en tvåtakts Otto-cykel fungerar.Gasväxlingsprocessen i tvåtaktsmotorer kännetecknas av behovet av att snabbt få ut denförbrända gasen och införa ny blandning vid varje expansionstakt, samt avsaknaden avventiler. Behovet att kunna kontrollera gasflödet genom cylindern ger upphov till två avde mest karaktäristiska systemen på tvåtaktsmotorer: spolpump samt avgaspipa.Utformningen och genomförandet av dessa två system har skapat ett flertal uppgifter somdet varit nödvändigt att lösa: porttider har uppmätts, ett luftintag med trycksatt luft harbyggts för att kunna ändra förhållandet på insugningsluften. Olika insprutningssystem harockså testats.Slutligen har en avgaspipa installerats och trimmats in. Utifrån målsättningen, så har ettlogiskt sätt att angripa problemet gjorts:? Beteende hos kompressibelt gasflöde i HCCI-motorns kanaler har studerats.? Avgasrörets dimension och dess påverkan på motor prestanda har undersöktsgenom att prova olika utformningar på avgasröret.? Experimentella observationer av tryckpulsationer i avgasflöden har gjorts för attkunna gör finjusteringar..

Sweden has a great tradition of pattern in both wallpapers and fabric, where colours and shape matters a lot for the customer. I have through my examination project tried to expand the views and find new alternatives and shapes for the obvious pattern traditions. I have therefore worked with what could be on the verge of attractive or repelling. To create a curiosity of what is considered to be commercial. From the prospective of the body organs I have created physical patterns for fabric and wallpapers.

This master thesis is intended to give an increased understanding of the stress state in an axle, which is assembled in one of Atlas Copco?s mountain drilling rigs. The main problems investigated were how the axle is affected when the bearing is worn, when the pretension is varied, and how to dimension the axle. Answers to these questions were found by using hand calculations, practical testing and with Finite Element analyzes. The dimensioning of the axle is currently based on the bending stress, but the author?s opinion is that the axle should be dimensioned considering the equivalent stress.

Bakgrund: Schizofreni kännetecknas av en förvrängd verklighetsuppfattning, och att man haft en psykos som varat längre än sex månader. Framträdande är ett desorienterat tänkande och röstahallucinationer, även om störningen huvudsakligen är kognitiv så yttrar den sig oftast på beteendemässiga och känslomässiga plan. Attityderna gentemot schizofrena har under de senare åren generellt förbättrats i det svenska samhället och inom sjukvården. Men ändå är negativa attityder fortfarande vanligt förekommande. En attityd är en uppfattning som man bildar sig gentemot ett visst fenomen, en persons medvetna eller omedvetna inställning till en person eller ting och kan vara positiv eller negativ.

SAMMANDRAGI denna teoretiska uppsats jämförs och problematiseras filosofen Hannah Arendts (1906-1975)begrepp handling och filosofen Judith Butlers (1956-) begrepp performativitet. Genom dettaså jämförs även deras respektive användning av begreppet politik. Syftet med uppsatsen är attproblematisera användningen av dessa begrepp samt att jämföra dem med varandra ochargumentera för de likheter som finns. Ytterligare ett syfte är att argumentera för HannahArendts viktiga bidrag till samtida genusvetenskaplig forskning. !Först redogör jag för Hannah Arendts och Judith Butlers användning av begreppen var försig för att sedan göra jag en jämförande begreppsanalys där jag jämför likheterna mellan derasanvändning av begreppen.Mina slutsatser är att det finns ett flertal likheter mellan Arendt och Butlers teorier kringpolitik och villkoren för det mänskliga.

The aim of this essay is to try to gain understanding and to get a more profound knowledge of suicide. The questions at issue were 1) What empirical factors are mentioned in the research as possible to explain suicide. 2) Which theoretical perspectives are discussed in research concerning suicide. To answer our questions at issue we carried out a selective research overview with a qualitative perspective. The primary documents that has been the foundation of this essay is constituted by nine of the leading researchers publications in the area of suicidology.

Whether use of affirmative action can be justified is an ethical dilemma that hasbeen intensely debated. The question raises several conflict dimensions. Thepurpose of this thesis is to separate different arguments of the debate and classifywhich principles they are built upon. To accomplish this, an analytical instrumentis created where three different perspectives of equality, and deontology versusconsequentialism, are compared. A third conflict dimension, individual versusgroup ethical principles, is also considered.

Uppsatsarbetets syfte är att ur ett elevperspektiv öka kunskapen om vad användande av digitala hjälpmedel som didaktiska redskap kan innebära för elevernas lärande i textilslöjd och musik. Frågor om hur lärare och elever tänker om och upplever användandet av digitala hjälpmedel i undervisningen i textilslöjd och musik samt vilka för- respektive nackdelarna kan vara med att använda dem ställs i studien. Bakgrunden till studien är erfarenheter av elevgrupper med en stor andel elever med särskilda behov som koncentrationssvårigheter och låg motivation till skolarbete. För att uppnå syftet har lärare och elever som använder digitala hjälpmedel i de estetiska skolämnena observerats och intervjuats. Empirin har sedan analyserats med hjälp av två teorier om lärande, multimodalt lärande och olika lärstilar. Att digitala hjälpmedel kan ge undervisningen en ytterligare dimension, motivera eleverna och ger dem fler sätt att både ta till sig och uttrycka kunskap på kan ses som de viktigaste resultaten av studien.

The purpose of this thesis is to investigate the possibilities for shore side electricity in the ports of Västerås and Köping. A technical solution to connect the vessels to the local grid is suggested and the investigation is also aiming at an understanding of how the environment is affected by the use of shore side electricity. Furthermore, the costs of shore side electricity are considered.The maximum power demand of a vessel visiting the ports today is relatively small, but the ships visiting the ports in the future might have a larger power demand. The suggested dimension for the system is 5 MW and the result shows that the shore side electricity requires the power distribution to the ports to be expanded. The most useful solution in the ports is to connect the ships with 12 kV from a connection box in a pit at the quay.The investigation of the costs shows that it is cheaper for the ships to use electricity compared to the marine fuel.

This thesis has two aims: The main purpose is to describe and illustrate how a large Ltd. company can use voluntary redundancy as a tool for restructuring. The additional purpose is to challenge the concept of voluntary redundancy trough outlining alternative ways of reaching the intended achievements of the voluntary redundancy programme. The theoretical framework that has been used primarily contains knowledge assets theories. The chosen theories are intellectual capital and knowledge management theory to approach and analyse the empirical findings.

A lot of various substances can be detected by dogs, as oestrous in cows, endangered species or non-biological substances like accelerants, narcotics, explosives, mines and pollutions and biological substances like identity (suspects), cancer (breast, lung, colorectal and bladder cancer), human remains (cadaver), bacteria and mould in buildings. The dogs are trained using non-scientific methods and not much research in detection training exists. This is a review of different types of dog detection, with focus on new research..

This study investigates the potential of a rhetorical theory of knowledge to expand beyond its own domain and into political theory, specifically theories of deliberative democracy. Despite the increasing interest in communication in democratic theory in the last decades, the majority of theorists have not turned their interest towards rhetorical science. On the contrary, theorists often regard rhetoric as dangerous and incompatible with the deliberative ideal of reason. The aim of this study is therefore to defend rhetorical science by investigating how the rhetorical theory of knowledge ? as it is presented by Chaïm Perelman and Oldbrecht Tyteca, and further developed by Mats Rosengren and Maria Wolrath Söderberg ? can contribute to the understanding of deliberative democracy.

The relationship human has to animals are complex and I discuss this from a theological and philosophical perspective in this essay. I ask on what grounds, with what arguments and how one could live with an inclusive ethic. I discuss the philosopher Peter Singer and the theologian Andrew Linzey to see their agreements and differences. Linzey has a mystic influence built into the theological perspective. Swedish activists and authors Pelle Strindlund and Annika Spalde call their way of life the ?Way of love? and show an animal-inclusive ethic built on a Christian mystic ground..

In 1809 the citizens of Sweden where given the freedom to practice their Christian faith through the Swedish constitution of 1809, 16 §. This proclaimed that there should be religious freedom in Sweden, albeit restricted to Evangelical-Lutheran faith. Although after the law regarding dissenters was passed in 1860 by choosing another church than the Evangelical-Lutheran church you lost some civic rights, for example you could not become a public official. The freedom to choose religious affiliation was given through the Law of Religious Freedom in 1951. The purpose of this study is to evaluate in what way the concept of religious freedom has developed in Swedish law between 1809 and 1951.In the background I treat two historical events and one era, with focus upon religious freedom, which have in my opinion influenced the view of religious freedom in Sweden during the chosen period of 1809?1951.

This essay is about power in the classroom. It is about the power dimension of the student-teacher relationships that arise in that space. The overall aim has been to investigate which categories are fruitful in a power analysis of these relationships. My aim has therefore been to develop power categories and to use them to identify and to categorise cases of power interaction that take place between those particular actors in that particular setting.In order to gather material for my study I have both read literature that approaches the study of the student-teacher relationships from a power perspective and done a series of observations in a high school.My theoretical frame comprises a concept of power and a series of power categories. These categories include strength, authority, inducement, coercion, violence, resistance as well as to possess power, to have power, to exert power, the scope of power and the base of power.