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In this article I examine whether an influential theory of mechanisms proposed by Peter Machamer, Lindley Darden and Carl Craver can accommodate polygenic effects. This theory is both interesting and problematic, I will argue, because it ascribes a central role to activities. In it, activities are needed not only to constitute mechanisms but also to perform their causal role. These putative functi
We investigate whether the recently observed population of high-velocity white dwarfs can be derived from a population of binaries residing initially within the thin disc of the Galaxy. In particular, we consider binaries where the primary is sufficiently massive to explode as a Type II supernova. A large fraction of such binaries are broken up when the primary then explodes as a supernova, owing
Expansive cements are utilised in special applications to improve properties such as cracking caused by drying shrinkage. Several types of expansive cements exist and the main hydration product responsible for the expansion is ettringite, [Ca3Al(OH)6]2(SO4)3·26H 2O. The importance of the cement phase containing alumina is well known, in this study the source of sulfate is investigated. Pastes cont
Geometric hashing is a fast, but noise sensitive, method for doing matching of points in images with points in a model database. Here the noise is taken into account, and improvements to the method is proposed
Hur behåller man hälsan som lärare? Vad händer i mötet mellan politiska ambitioner och kommunal skolverklighet? Hur påverkar den ordlösa kommunikationen stämningen i klassrummet? Vad händer när mätbar kunskap blir viktigare än användbar kunskap? Kan man vara nöjd som lärare men missnöjd som anställd? Skolan har blivit en ideologisk ”het potatis” som väcker engagemang, både inom och utom skolans v
