The report examines the factors which may be a contributing cause to the problems that are present when ferritic stainless steel are eddy current tested in a warm condition. The work is carried out at Fagersta Stainless AB in Fagersta which manufactures stainless steel wire. In the rolling mill there is an eddy current equipment for detection of surface defects on the wire. The ferritic stainless steels cause a noise when testing and this noise complicates the detection of defects.Because of this, a study was made of how the noise related to factors such as steel grade, temperature, size and velocity. By observing the signal and with the possibilities to change the equipment settings the capability to let a signal filter reduce the noise level were evaluated.

Vi har från och med 2011 en ny läroplan för grundskolan som betonar användningen av digital teknik i matematikämnet mycket starkare än den tidigare läroplanen från år 1994. Situationen i skolan av idag på detta område är inte i fas med kravet från den nya läroplanen. Det behöver utvecklas en ny praxis för användandet av digital teknik i matematikundervisningen. Med den studie vi här gjort har vi velat få handgriplig information hur en introduktion av ett gratis dataprogram, GeoGebra, kan tänkas fungera för nionedklassare. Studien är en tredelad fallstudie med 1) ett undervisningstillfälle; 2) ett uppgiftslösningstillfälle; och 3) ett intervjutillfälle.

Den här studien kommer belysa om kulturjournalistiken i tre svenska dagstidningar har förändrats till följd av deras digitala publicering och i så fall hur. Denna utveckling bör ses i en större kontext med en utmanande ekonomisk situation för dagspressen, färre prenumeranter och därför även vikande annonsintäkter, utöver ökad konkurrens från Internet, sociala medier och webbtidningar. Webbpublicering har gjort det möjligt att ständigt mäta hur läsare tar till sig artiklar, om texter blir klickade och om de blir lästa. Genom kvalitativa intervjuer med tre kulturredaktörer på tre olika dagstidningar kommer denna studie belysa kulturredaktörens publicistiska ställningstaganden. Analysen tar upp en rad frågeställningar som gäller det journalistiska innehållet, språk, typ av textgenres som publiceras, sätt att skriva, förhållningssätt hos kulturredaktören samt olika sätt att arbeta journalistiskt, och undersöker om det var något av detta som framstår som en extra tydlig utveckling i relation till digital publicering.

AbstractIn this text the attitudes towards and using of blogs in teaching Swedish toteenagers will be explored. The results are based on a survey made amongst 17teachers and 58 students from all over Sweden. The end results show that theusage of blog still hasn?t found a permanent way into the classrooms, but has anappeal to and is being used by predominantly younger teachers both, male andfemale, with a positive response from students regardless of gender. Theconclusion is that using web tools like the blog is an easy first step for schools toconnect to the digital society of the 21stcentury and take advantage of the perksavailable in the digital classroom.Svensk titel:Blogg + Svenska =Sant? ? Bloggande i undervisningen i svenska.Engelsk titel:Blog + Swedish =True? ? Blogging in teaching Swedish.Ämnesord: Blog, Web 2.0, digitalt klassrum, svenska, undervisning,kompetensutveckling.

Denna studies syfte är att försöka förstå och diskutera den digitala mobbningen utifrån det mediasamhälle vi befinner oss i. Frågeställningarna som är grunden för studien är: Hur kan vi förstå digital mobbning? Hur kan denna förståelse leda vidare till metoder för att angripa problemet? Hur upplever pedagoger respektive elever den digitala mobbningen? Vad säger lagen om mobbning? Vad kan vara viktigt att tänka på i samband med Internet? Studien bygger på kvalitativa och kvantitativa undersökningar gjorda på två olika skolor. Den kvantitativa undersökningen bestod av enkäter som delades ut i tre klasser i år sex. Den kvalitativa undersökningen bygger på intervjuer med två pedagoger knutna till dessa klasser.

This study focuses on trying to understand the attitudes of people born in the 1940?s concerning their view on social media. This 1940?s group has been growing on the social networks such as Facebook, but their usage is not active. Therefore, the purpose of this report is to understand in what way they are affected by the using of these platforms.

This master thesis was a continuation of a previous study in the diesel exhaust characterization, which is part of the academical work embedded in the EMIR-1 project. The main objective of this thesis work was to finish the installation and make the proper modifications of the particulate mass measuring system located in one of the engine test cells at KTH, in order to be able to measure the mass of the particles from the exhaust of diesel engines.This experiment requires a diluted flow sample from the exhaust that should be sent to the device that makes possible the measurement of particle mass, called TEOM. In the first stage of this project, the objective was to study and make the proper modifications in the existing KTH diluter because there were several problems to obtain a constant dilution ratio from it during tests.This modifications were made and it resulted in a great improvement in the maximum inlet and outlet flow that this diluter can handle. Therefore another modification is proposed for controlling the inlet exhaust flow so it will be possible to regulate the dilution ratio and make it constant along a wide range of engine loads and speeds.The second and most important stage was to make particulate mass measurements possible by analyzing the frequency signal from the TEOM device. The idea was to obtain the frequency of oscillation from the tapered element in the TEOM, and therefore with the proper correlations, be able to predict the particulate mass concentration in the exhaust flow from the engine.An electrical problem in the TEOM circuit was detected and corrected, so the signal that carries the frequency from the TEOM can be analyzed properly.

Digital preservation is a relatively new subject to Swedish archives. Alhough computers have been used for a long time, preservation has been made on paper and stored on shelves. These days a lot of cities in Sweden have investigated how to best secure the digital information for the future through electronic archiving, e-archives. One option is to hand in the information as soon as possible, but to let the producer keep the information ownership yet some time. The idea is to let the producers of the information answer questions and hand out material, since they are more competent on their field.

This master thesis aims to examine how public libraries in Sweden are practically and ideologically equipped to deal with e-books, outside of the dominant distributor Elib. The study also aims to find out what?s required of the book market and the public libraries to make further progress in the question of e-books. In Sweden e-books are still representing only a small amount of all the library loans and an even smaller amount of the commercial book market.The methodological and theoretical ground for the thesis is Grounded Theory, and the survey is based on interviews with publishers, librarians and distributors.The conclusions of this thesis are that the public libraries lack resources to invest in e-books, and that they also lack in knowledge about the media and its readers. It also exposes that both internal and external collaboration efforts need to be further developed.

Learning Management Systems (LMSs) hold great potential to support learning activities, for example by providing teachers and students with new and extended spaces for interaction and collaboration. However, this potential appears to be difficult to realize, and despite their perceived learning benefits, the reality is that LMSs are being used primarily for administrative purposes. Meanwhile, external pedagogical tools are successfully put into practice to improve learning outcomes, and the aim of this study is therefore to identify and discuss benefits and disadvantages associated with the LMS as a concept. By interviewing secondary school teachers, we disentangle the idea of integrating administrative and pedagogical aids into a single platform, providing detailed insight into the use of digital tools in secondary education. The study contributes to a deepened understanding of integrated learning environments, and we conclude that there is a conflict between structure and flexibility that needs to be addressed before determining the design of a digital learning space..

The purpose of this study was to illustrate how children of the "digital generation" used their computers in their everyday practice. The important in the study was children's perspective on computers interactions and communications in a digital arena.An essential item about understanding children's way to think about computers was to let children themselves speak by taking part in the study, because children's voices are seldom heard in public. The empirical material used was interviews with sex children between 13 and 15 years old. My method was qualitative.The main results showed that social relations are very important for children. The Internet gives children access to an arena where they are able to make new contacts with others as well as transcend their biological as their physical identity.An important accepts for the children in the study was the option to be anonymous.

In this paper I have sought a suitable level of abstraction in my models describing the landscape; the models are made to be viewed from eyelevel. Because of the spectator being ?in the model? the objects included need a certain degree of realism. I have sought what is needed in the model to be able to comprehend that the model is showing a landscape. Some details might be unnecessary.

This is a qualitative case study of young womens? experiences of blogging about One Direction on the social media/microblogging platform Tumblr. The aim of this study was to find out what fan blogging is and why fans blog. We did this by creating an account on Tumblr where we invited young women between the ages of 16?29, who had active fan blogs dedicated to One Direction, to answer an open-ended questionnaire.

AbstractIn this text the attitudes towards and using of blogs in teaching Swedish toteenagers will be explored. The results are based on a survey made amongst 17teachers and 58 students from all over Sweden. The end results show that theusage of blog still hasn?t found a permanent way into the classrooms, but has anappeal to and is being used by predominantly younger teachers both, male andfemale, with a positive response from students regardless of gender. Theconclusion is that using web tools like the blog is an easy first step for schools toconnect to the digital society of the 21stcentury and take advantage of the perksavailable in the digital classroom.Svensk titel:Blogg + Svenska =Sant? ? Bloggande i undervisningen i svenska.Engelsk titel:Blog + Swedish =True? ? Blogging in teaching Swedish.Ämnesord: Blog, Web 2.0, digitalt klassrum, svenska, undervisning,kompetensutveckling.

Sweden's drinking water quality is considered to be high partly due to a high quality of the raw water and a well developed sewage infrastructure. Despite this, there is water contamination that could be prevented by installation of a sophisticated early warning system. Some of the major players in the production of drinking water have already invested in different types of early warning systems to ensure drinking water of high quality. There are various forms of early warning systems where automatic monitoring of E. Coli is an interesting alternative.