The transmission properties of perforated perfectly conducting screens are of practical interest. The treatment of non-periodical structures by numerical tecniques, such as the method of moments, is very computer intensive. In this paper it is shown that using well adapted basis functions, the number of unknowns can be drastically reduced. Advantages and limitations of the method are discussed. Nu

This thesis explores the educational and methodological opportunities of the ‘not-yet-seen’. Departure is taken in the philosophy of Deleuze and Guattari, and in pivotal concepts that challenge the image of the stabile subject, chronological time and established dichotomies in general. The aim of the thesis is three folded. First, it aims to plug the philosophy of Deleuze and Guattari in with educ

Software development is a complex area and extensive practice and reflection is required in order to obtain a good understanding of the different tasks involved in going from idea to deliverable software. To help in providing this understanding, we have developed a team programming course based on extreme programming and a coaching course. We discuss how these courses affect the curriculum, the de

The effects of the Active Accelerator Pedal (AAP), on speed behaviour of drivers with different backgrounds and attitudes was analysed. It was found that most of the drivers initially reduced their speed to the speed limit. However, after driving with the system for a while, speeds increased. Drivers who had a high speed without the AAP started to speed again. This finding suggests that an advisor

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How can locomotion be combined with the use of screen based digital devices? This paper deals with the ways that GPS (Global Positioning System) is integrated with the mundane practices of wayfinding and moving on foot. I’ve mainly studied how handheld GPS-devices are used by so called geo-cachers. The paper focus on ideas about cognition, spatial awareness and locomotion, and discuss how complex

Concrete itself is not a source of VOC emissions of any importance. However, humid concrete is very alkaline and may cause degradation of organic materials. Concrete can also adsorb considerable amounts of volatile compounds, e.g. from degrading flooring materials. This together with the present trends in cement and concrete production (alternative fuels, new organic additives, waste materials) ha

Syftet med detta utkast är att analysera hur ungdomar som varit placerade på särskilda ungdomshem upplever, definierar och tolkar ett behandlingsprojekt, som involverade olika myndigheter, benämnt Motverka Våld och Gäng. Dessutom uppmärksammas hur de tolkade de i projektet anställda samordnarna. Den personliga aspekten i relationen mellan ungdomar och samordnare framställs som viktig och det verk