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In this paper projective normalization and projective invariants of planar curves are discussed. It is shown that there exists continuous affine invariants. It is shown that many curves can be projected arbitrarily close to a circle in a strengthened Hausdorff metric. This does not infer any limitations on projective invariants, but it is clear that projective normalization by maximizing compactne
Popular Abstract in Swedish Interndosimetri ur ett makroskopiskt och mikroskopiskt perspektiv Med interndosimetri menas den metod man använder för att bestämma en absorberad dos till en vävnad för ett radioaktivt ämne som är fördelat i kroppen. Absorberad dos, dvs den av strålningen deponerade energin per massenhet, mäts i enheten gray (1 J/kg = 1 Gy) och kan beräknas med ekvationerna som syns påInternal dosimetry deals with the assessment of absorbed dose for radionuclides distributed inside the body. The absorbed dose is in its turn used for correlation with the biological effect caused by the irradiation. In radioimmunotherapy is however the correlation not easily found and factors influencing this are evaluated and discussed in this work. The internal dosimetry could be subdivided int
Popular Abstract in English If you wonder about the journey of goods and services before they reach you and the effects that journey has on the natural environment and the society, this dissertation is for you. In order to deliver goods and services from raw materials to you, the customer/consumer, several organizations and individuals interact with each other. They source the materials, manufactuTo develop sustainable supply chains in a way that their negative environmental and social effects are minimized, shortand long-term targets should be set. The transformation of supply chains towards these targets calls for the development of innovative strategies and the need to continuously identify, classify, and tackle the challenges that can hinder the execution of such strategies. To develop
Cities are both at risk and the cause of risk. The interconnectedness of urban features and systems increases the likelihood of complex disasters and a cascade or ‘domino’ effect from related impacts. However, the lack of research means that our knowledge of urban risk is both scarce and fragmented. This paper presents a framework for understanding and addressing urban risk. It examines the unique
Uppsatsen handlar om en frågelista som författaren utarbetade för den dokumentation som Folklivsarkivet vid Lunds universitet bedriver. Frågelistan skulle med hjälp av arkivets fasta meddelarstab dokumentera hur telefonen förändrade vardagen. Uppsatsen behandlar arbetet att konstruera frågelistan och vilket resultat och kunskap som kunde nås med hjälp av svaren.
Within the framework of the Swedish national trial with Intelligent Speed Adaptation (ISA) in urban areas, 225 cars are equipped with an active gas pedal for a period of 10 months in the city of Lund. In order to evaluate the systems a number of studies are being carried out. The driving data of all equipped vehicles is logged with regard to time and speed, both before and after activating the sys
Abstract in UndeterminedObligatory educational training of Swedish university teachers rarely involves senior teaching staff from research-dominated environments, despite the positive effects of junior staff training. Senior science academics were surveyed to gauge their views on the principles of teaching and learning and of teaching rewards. These views were compared with educational developers'
