During this master thesis, wear and friction properties for the high-temperature alloy Kanthal APMT were studied. The results were also compared to 253MA. The initial tests showed, among other things, that the surface fineness of the muffle tubes matters in real applications like conveyor belts. A 253MA-sample wear-tested against a 253MA-tube showed lowest wear at 900°C while a pre-oxidized APMT-sample wear-tested against a APMT-tube had the lowest mean value of the friction force at 1100°C, compared to all other tests..

Arbetet bygger på att de informationssystem som används idag men som blir allt äldre och därigenom inte klarar de krav som ställs på dem. Detta medför att informationssystemen måste migreras till modernare plattformar, då företagen dels inte klarar sig utan dess nuvarande funktionalitet och dels måste vidareutveckla systemen.Detta arbete tar upp olika sätt som detta kan genomföras på och vilka problem som kan komma att uppstå när detta sker. För att kunna undersöka detta så genomfördes ett antal migrationer. Språken som migrationen kommer att ske mellan är Visual Basic 6 och Visual Basic .net. Migrationerna kommer att ske med hjälp av ett migrationsverktyg, samt ett ramverk som i arbetet skräddarsys för just arbetets typ av migrationer.Det arbetet kommer fram till är att det sker problem vid användande av ett verktyg och även att det inte ger tillräckligt med respons på vad som gått snett under migrationerna..

This study you are about to read have two investigated areas concerning the need ofsources in terms of architectural historys terminology. The investigation is based on aquestionnaire study.The first aim of this study is to describe the intergrated conservations professionalqualifications in the subject. In what condition are the knowledge of them who recentlypassed the examination, what needs do the professionals have, what kind of sources duthey use in fields and are they satisfied with the amount of sources?The second aim of the study is to find out if there are any place for developing a newsource at the market? If it is, how can a new source include the informed needs?The study came up with several needs pointed out by the professionals in the field.These needs are the groundwork of a new source that the study introduce, aarchitectural glossary of terms, made of illustrations! The point is that the new idea ofglossary will meet the needs of today, rationalise the work and improve the knowledge inthe subject..

Oilseed rape is an important crop in Sweden and is grown on about 90000 ha today. The interest in oil seed pro-duction is increasing because of growing demand and high prices for oil seed both in Sweden and Europe. However, an increased intensity in the oil seed production can bring higher risk of yield losses due to fungal diseases. The purpose of this study was to investigate what different fungi are associated with oilseed rape under field conditions and if their incidence is correlated to crop establishment problems. This study was carried out in three parts: 1) investigations on fungal community structure in roots and rhizosphere soils from young spring- and winter rape plants sampled in failed respectively good establishment patches in four fields, 2) investigations on the pathogenicity of fungi isolated from oilseed rape in controlled environment and 3) investigations on the effect of different fungicide seed treatments on germination and early plant development in a field soil naturally infested with damping off- and Verticillium wilt pathogens. The studies on community structure using a combined approach of standard fungal isolation techniques and DNA based methods revealed a high fungal diversity in three out of four studied fields of spring rape and winter rape. For some unknown reason, very few fungal species were identified from the fourth field.

This work examines the students´ thoughts on climate change with a focus on carbondioxid through photosynthesis and the carbon emissions from cars. The study is based on two subject areas, one with a focus on enhanced greenhouse effect, and the other focusing on photosythesis. The survey was conducted by means of qualitative interviews with students in grades four and six. The results describe that student´s understanding for photosynthesis and the carbondioxids function for photosynthesis doesn´t change significantly from grade four to grade six. I have divided the students inte three levels based on their understandingof the various fields, and their use of adequate concepts.

This thesis will address a problem concerning availability of information systems at an enterprise within the financial sector and its external suppliers, so called trusted third party. The information system resides on the internal network of the enterprise and must be available to both employees of the enterprise and the trusted third party simultaneously. This contradicts the company policy which disallows third parties access to the internal network. The HAVECA-model introduced in this thesis provides a framework of methods, each solving a sub problem identified in the model. The identified methods are hardening, verification, control and assurance, together supplying a method for continuously securing the internal network against a trusted third party.

Quadrotor UAVs are self-stabilizing, autonomous flying machines that has recently become more popular than ever. Unmanned Aerial Vehicles have their roots in the military, where they were developed for use in reconnaissance and combat. During the last few years, advances in the fields of electronic sensors, electric motors and microcontrollers have enabled smaller designs and autonomic flight control even for private use. The quadrotor, which is the particular kind of UAV we are looking closer at in this paper, has 4 rotors in an X-like formation. This configuration has many advantages such as good lift capacity, non-complex mechanical structure and serviceability.In this project we aquired a current overview of the domain and determine whether it is possible to construct a quadrotor UAV designed for use in a WISENET sensor network on a low budget and short time schedule.Based on existing community project AeroQuad, a quadrotor is constructed with a budget of about 500 euro.

Det här kandidatarbetet undersöker hur Physically based rendering kan påverkar en 3D-grafikers arbete. Målet är att skapa förståelse kring physically based rendering och hur denna tekniken kan komma att påverkar en 3D-grafikers arbete. För att undersöka problemområdet skapades en virtuell miljö i 3D med hjälp av physically based rendering. Arbetsupplevelsen jämfördes senare med det tidigare arbetssättet. Undersökningen beskriver tidigare arbetsätt och hur arbetet har ändrats med physically based rendering.

Research on the power of customer involvement, and in particular recommendation is very resourceful. Many studies have mapped the reasons for why customers are willing to recommend, however they often ignore potential differences among brands and how that may affect these reasons. This study is built on a quantitative survey investigating how consumers interact with brands, depending on category affiliation. The categories used were Bhat and Reddy's symbolic and functional, consisting of three brands respectively where each brand represented a different product type.The evolvement of social media has also transformed the platform of recommendation from physical to virtual and changed the way people connect. Thus, taking the investigation further, potential differences between symbolic and functional brands was tested in different social media platforms.

The purpose of this thesis was to analyse, model and finally generate dynamic vehicular motions in a train. The objective with the analysis was to find important motions for a realistic train experience. The motions from the analysis were then weighted against possibilities for generation in a motion platform.A dynamic motion model was created to model the selected motions. The model was implemented in a simulation environment, more specifically MATLAB/Simulink. The simulation environment was used to simulate the model and to generate outputs to control a motion platform.

Studien tar avstamp i den diskussion som förts kring nyhetssajternas kommentarsfält. Diskussionen kulminerade under sommaren 2011 då flera nyhetssajter ändrade sina förhållningsregler och vissa fall även de tekniska lösningar som användes. Denna studie ämnade undersöka om valet av kommentars-teknik påverkar användares vilja till kommunikation på nyhetssajter, men även att belysa eventuella bakomliggande faktorer till detta. Detta har genomförts genom en kvalitativ observations- och intervju-studie. Resultatetav studien påvisar att kommunikationen påverkas av valet av teknisk lösning, och att bristen av kontroll är en av de avgörande faktorerna bakom huruvida en användare är villig att kommentera en artikel..

The aim of this study was to investigate physical education teachers (PET) view of the needs of physiotherapy in compulsory school. Semi structured interviews were conducted with five PET. The study was carried out as a qualitative content analyse study. The interviews were coded in categories independently by the two authors. The categories were then brought together in four major categories: PET work situation, pupil health, physiotherapy and cooperation.

This essay presents a comparative study of the Swedish articles of war of year 1621 and 1683 which aims to, through analysis, assess the extent of the development in Swedish army legislature during the 17th century and to derive the likely underlying causes for this development. The study is in large comprised by a detailed comparison of the two collections of articles of war in order to determine the practical changes to the legislature that occurred between the years that they came into force..

Ever since the development of the pc and their software, in the early 80´s,architects way of work have changed a lot. Nowadays most of the architectspresent all their works digitally and not with hand drawn material, as they didbefore the pc boom.Digital visualisation technique pushes the limits, when it is about presentingarchitecture projects virtual reality.This report studies how digital visualization technique is used among thearchitects today.Together with architects from ABAKO architect firm in Gothenburg, Sweden,interviews has been made to give answers about what they think about digitalvisualization technique. What are the opportunities, advantages- anddisadvantage with this digital technique?The answers from the architects, together with work that has been done withdigital visualization technique in a project called Project Sofiedal, shows thatthis technique has big opportunities when it comes to create nice looking VRpresentations. The result in this report also shows that this digital technique ismore time demanding compared to hand drawn presentations.The investigation shows that digital visualization technique is a goodcompliment when it is about showing the citizens how future projects willaffect the surrounding.

The aim of this study was to investigate physician?s view of physiotherapy in primary health care. Semi structured interviews were conducted with five physicians. The study was carried out as a qualitative context analyse study. The interviews were coded in categories independently by the two authors.