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The aim of the study reported in this paper is to investigate how students understand continuity and differentiability during and after a calculus course. The students’ choices of representations, both claimed and acted, were also studied. The study is part of a larger study of four student groups taking a calculus course. 207 students answered a questionnaire during the course and of them, 11were

En av EU:s grundläggande principer är den fria rörligheten för personer som även ska gälla för familjemedlemmar. Då varje medlemsstats familjerättsliga lagreglering omfattas av begreppet skydd för den nationella identiteten, befinner sig området utanför EU:s lagstiftningskompetens. Harmonisering av medlemsstaternas nationella lagstiftningar i frågan är därför inte aktuellt då det medför en begränsFree movement of persons is one of the fundamental principles of the EU, which also applies to members of the family. The family law is governed nationally to preserve the national identity; therefore, it is outside of EU’s legislative competence. The harmonisation of the national legislation in question, therefore, is not appropriate as it implies a limitation on a state’s national identity. The

Popular Abstract in Swedish I avhandlingens fokus står förhållandena på Kosta glasbruk under perioden 1820-1880. Glasbruket som grundades år 1742 är en av de många mindre svenska bruksbildningarna. Under hela undersökningsperioden måste glasbruket ses som förhållandevis litet med som mest ett 80-tal hushåll direkt knutna till glasbrukets industriproduktion. Glasbruket hade liksom flertalet svenskaThis thesis focuses on the circumstances at the glassworks of Kosta during the years 1820-1880. The glassworks founded there in 1742 was but one of many small Swedish rural works. Throughout the period in question, the glassworks can be seen as a small-scale factory with about 80 households directly engaged in industrial production. Like the rest of the glass industry, the glassworks at Kosta deve

In order to tap the energy saving and climate mitigation potential of the building sector, transaction costs of implementing energy efficient technologies need to be better understood and ultimately reduced. The objective of this paper is to identify and analyze the nature and scale of transaction costs resulting from the application of the passive house concept in energy efficient renovations. Re

An agonistic approach to ethnography illuminates the complexities of researching in Palestine, where violent Israeli border regimes create pro- found socio-political divides. This framework highlights the methodological challenges and the transformative potential of ethnographic inquiry in contentious environments.

At present, when economy and environment receive high priority, the ideal anaesthesia system with inhalation anaesthetics is a closed circle system in which only the gases which the patient consumes or produces are replaced or eliminated. Low-flow (LF) anaesthesia in which the fresh gas flow which is employed in a closed system, provides a stable system compares with closed anaesthesia systems. Co

Nitro blue tetrazolium (NBT) is an artificial electron acceptor which has been suggested to be a useful tool in studies of free radicals. To establish whether NBT could be useful in morphological demonstration of free radicals in the retina, the staining pattern was examined in normal rat retina and after incubation with the free radical scavenger superoxide dismutase or with inhibitors of free ra