The market for heavy duty engines is constantly requiring engines that should be more andmore powerful, while still maintaining low fuel consumption. As a result of increasing enginepower, the engine and coolant temperature increases as well due to insufficient coolingperformance (because of design issues, cost etc.).Also, emission legislations, both current and future, require more and more measures to betaken by engine manufacturers. One way of meeting the legislations is the use of cooled EGR(Exhaust Gas Recirculation), which also lead to increased coolant temperatures.Both these factors also naturally lead to increased engine oil temperatures, the consequencesof which are not thoroughly investigated.This thesis project aims to investigate effects of high temperatures on engine oil degradation,with focus on the greatest degradation process: oxidation. To do this several engine runs havebeen performed on a 310 hp engine with EGR to see what happens to the engine oil in a realengine when exposed to high temperatures. During the tests oil samples have been taken andanalysed for important parameters.As a complement to these engine tests some laboratory oxidation testing have also beenperformed, to be able to compare engine test data with laboratory tests.One goal of the project was to try to formulate an empirical oxidation model, which would beable to predict oil oxidation levels in an engine, given any running parameters.

Glulam is a product that was engineered to make use of timber in a more efficient way. Bychoosing timber of similar quality and discarding natural defects during production, thedevelopment of a stronger cross-section is achieved.Carbon fiber is a relatively new material with a high tension capacity. This feature is used toexamine how the bending capacity of the beams improve by adhering carbon fiber laminateson the lower edge of the beamsThe strength of the material is tested with three experiments: carbon fiber on the bottom of thebeam (a), carbon fiber attached to the lower sides of the beam (b) and carbon fiber in thebeam, covered with a layer of wood (c)The results show that the first case, where the carbon fiber is attached to the bottom of thebeam, gave the best result with an increase in capacity of 59 % compared to the nonreinforcedcontrol. The other two cases also show an improvement in capacity, beam-type 3had a capacity increase of 47% and beam-type 4 increased with 25 %Tests were also made with glulam beams reinforced with fiberglass, but these tests were notanalyzed in depth because the purpose was to compare the capacity to carbon fiber. Thisbeam improved its capacity by 40.3%.The tests show that carbon fiber as a reinforcement material for glulam is a good choice whenthere is a requirement for stronger cross-sections in both new production and renovation ofold buildings.

We set out to compare two different categories of workers: the, so called, white- and blue collar workers. The studies aim was to measure if there were any observable differences between the two in means of optimism and sense of coherence. There are two tools created for measuring optimism and sense of coherence, the Life Orientation Test ? Revised (LOT-R) measures an individual?s level of optimism and Aaron Antonovsky devised a test for measuring an individual?s level of sense of coherence (SOC). Optimism is best explained like a way to measure anticipation, how an individual expect future events to fall out.

The aim of this Masters thesis is to identify discourses within the school library field and to analyse which professional identities the discourses result in for school librarians. The empirical data consist of 71 articles from Swedish journals concerning school libraries and school librarians, between the years 2000-2003. The theory and method used is a discourse analysis which is inspired by Ernesto Laclau and Chantal Mouffe. This form of discourse analysis was chosen since it was useful when identity was the focus of study. The analysis is accomplished in three steps.

Computer games is a growing market with over millions of players that are playing and/or enjoying the play of games on a daily basis. The nerdy gamers that once were, are now becoming professional athletes in the virtual world called eSport. We have identified a lack of studies in this area which implies that there is little data of what it is. In this paper we have focused on the phenomena that is eSport and more closely on the game series Starcraft made by Blizzard Entertainment. Our focus lies in the game series Starcraft and eSport organisations mainly outside South Korea.

This report present a working model for simulation of what happens to colors displayed on screens when they are observed through optical filters. The results of the model can be used to visually, on one screen, simulate another screen with an applied optical filter. The model can also produce CIE color difference values for the simulated screen colors. The model is data driven and requires spectral measurements for at least the screen to be simulated and the physical filters that will be used. The model is divided into three separate modules or steps where each of the modules can be easily replaced by alternative implementations or solutions.

This essay describes how the author gradually gets a deeper understanding for his profession and the development of his professional skills, attitude and practice. The essay contains two main narratives representing examples from the author´s occupational practice, and through those narratives he tells how his practice alters and develops. These stories are also the basis for considering different aspects on how to get good models for practising a profession when you are a beginner, and how to manage ethical dilemmas. The starting point is when the author in the beginning of his career as a rural pastor is visiting a seriously ill parishioner at a province hospital. The course and the outcome of this call is surprising the young pastor, and the author tries to analyze the background to the outcome and assesses several possible explanations for the result of his call. The narrative is used to examine the attitude, the professional skills and the social and existential context for the author at that time. The patriarchal patterns in the parish are illuminated and questioned. In the second part of the essay the author investigates what will happen when pastoral cure transforms to psychotherapy, and how the author deals with phenomena in the therapeutical process such as idealization and secondary traumatization. On basis of texts written by among others Ingela Josefson, Fredrik Svenaeus, Christian Nilsson and Ulla Ekström von Essen the author seeks explanation for the development of his practical knowledge. With references to philosofers as Plato, Aristotle, H.G.

The aim of this study was to examine how women in a voluntary organization, KRIS (C.R.I.S. Criminals' Return Into Society) express their experience of help and support from voluntary and professional organized social work. This was an empirically based study with, qualitative approach. The methods of data collection were unstructured interviews and participant observation.The central question was which importance KRIS possible may have in the process of the women's return into society from involvement in crime and drug abuse. What can KRIS offer that the professional organization can't?The findings were that mutuality, mutual aid or mutual help based on shared experiences is hard to replace with support from professional organized social work.

AbstractThe purpose with this essay has been to gain a greater understanding and clarify how an arena can create value within place marketing and development of a place brand. This will be achieved through a description of which values an arena causes in the surrounding areas and an understanding of how these values can be interpreted through the place brand. We decided to base our study according to the following two questions:1. What are the underlying reasons why there has been such a big trend with arena project?2.

AbstractThe purpose with this essay has been to gain a greater understanding and clarify how an arena can create value within place marketing and development of a place brand. This will be achieved through a description of which values an arena causes in the surrounding areas and an understanding of how these values can be interpreted through the place brand. We decided to base our study according to the following two questions:1. What are the underlying reasons why there has been such a big trend with arena project?2.

More than 1000 Swedish Warmblood foals are shown every year at foal inspections which are arranged around the country. Six traits are evaluated at these inspections: type, head-neck-body, correctness of legs, walk, trot and canter. No previous genetic studies have been done on the data from these evaluations. The purpose of this study was to do genetic analyses of the traits which are evaluated at foal inspections. The purpose was also to see if there are any correlations between the results of the foal inspections and the results from the tests of three-year-old horses.

Families of children with disabilities often have many different contacts with professional representing different principals. This places high demands on their professional work together to meet the needs of families and use resources efficiently. The method used is a literature review which aims to describe what is needed to achieve good collaboration between different professions around families with children with disabilities, and that from an organizational perspective to examine why there are often gaps in collaboration and how this affects the parents' life situation.The theories in this study originated from organizational and sociological theories. The most central concept in this study is collaboration from an organizational perspective. The results show that the interaction is problematic, due to that collaborative organizations often have rules which are incompatible and a lack of accountability on who is liable makes impairment in the interaction.

The aim of this thesis is to create an understanding of nurses' information practices. To be able to search, find, use and critically evaluate information is important, not just during studies, but also in professional life. This study is intended to deepen our understanding of nurses ' information literacy in a workplace context.The main questions are: What information do nurses need on a daily basis and how do they experience information activities? What factors determine the sources they use? Do information practices vary in the workplace? Do nurses? professional experiences impact on their information practices? Nine nurses were interviewed using semi-structured interviews. The interviews have been analysed through a hermeneutic approach.

In the last decades, high speed cutting has become an attractive technology in the wood industry. The possibility of reducing global costs in addiction with an increase in productivity, were the main reasons for the enlargement of the use of this technology. As usual, these advantages are accompanied by disadvantages that should be carefully analyzed. If on the one hand cutting forces are reduced with increasing cutting speeds, on the other hand, the centrifugal forces affecting the tool are higher. Exposed to such high loads, there is a considerable risk of tool failure that embeds hazards for both machine and workers.

Environment friendly transports are one of the main topics in the industry and society today.Shell organizes an annual university competition called Shell Eco Marathon. The goal is to buildthe car that consumes the least fuel during a race. KTH participated for the first time in 2006.The engine for this competition, DoubleTwo, has been developed within the school. Theprinciple is a two stroke counter piston HCCI engine with variable compression ratio. HCCIstands for homogenous charge compression ignition.