Popular Abstract in Swedish Färger innehåller mer tillförlitlig information än vad bara skillnader i ljusintensitet gör. Det är därför inte svårt att förstå varför de allra flesta landlevande ryggradsdjur har färgseende. Några upplever en färgfattigare värld än vi människor, men många ser fler färgnyanser. På kvällen däremot gör bristen på ljus det svårt att se färger. Trots detta finns det nattakMost terrestrial vertebrates have colour vision, some perceive a less colourful world and others actually discriminate a wider colour spectrum than humans do. Still, we can all make use of the valuable colour information, which is more rigid than just brightness. However, at night when the light is dim, the lack of photons makes colour vision difficult. Nevertheless, some hawkmoths and bees can se

Due to the new generation of mobile devices such as smartphones and tablets, users are no longer constrained to their traditional devices such as PCs and laptops in order to access the information they need. This has given rise to a new trend in Business Intelligence (BI) coined mobile BI. This new term reflects an organizing vision, created by a broad community, which is prominent during the com

Primary effects of road traffic noise on sleep, as derived from EEG, EOG, and EMG, were studied for seven young males (aged 21–27) in their homes along roads with heavy traffic during the night. A more quiet experimental condition was obtained by mounting sound-insulating material in the window openings, thus reducing the interiors noise level by an average of 8 dB(A). The present investigation sh

The stability properties of a periodically loaded non-linear dynamic system are investigated and special attention is given to damping effects. Advantage is taken of the Floquet theory and the FE-approach is applied to a hinged beam where the damping is described by a standard material model and where even damping effects at the hinges are considered. Comparisons are made with experimental results

A new method to estimate the microstructural parameters of anisotropic twophase composite material is derived. The parameters are estimated using information from measurements or from numerical experiments. The method is used to derive new bounds on the elective tensor that incorporates information from measurements of a related parameter. These new bounds are called cross-property bounds. New tig

Information and Communication Technologies for education (ICT4E) have been playing an increasingly important role in schooling and training worldwide. On the one hand, they are expected to bridge various divides e.g. between developed and developing countries, urban and rural regions, affluent and poor neighborhoods etc., by spreading the most up-to-date knowledge and skills into every classroom o