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Nocturnal vision is a demanding task for insects with small eyes. As it gets dimmer the noise imposed by the stochastic nature of photon arrival makes vision unreliable. Despite this, there are quite a number of animal species that are active at night and apparently see well. In this thesis I show that the compound eyes of nocturnal insects are sufficiently flexible to adapt to the particular wind
Limitations on the scattering matrix are derived for a wide class of objects, restricting their broadband interaction with electromagnetic vector spherical waves in terms of their size, shape and static material properties. In particular, it is seen that the order of the dominating term for electrically small objects increases with the order of the spherical wave. The results are applicable to man
Though asthma is a commonly occurring disorder today, the development and introduction of anti-inflammatory drugs in treating it has changed the possibilities of living with it. At the same time, the Swedish guidelines for asthma care have changed: the patient is to take responsibility for her or his chronic illness to attain full quality of life. The study aims to make a cultural analytical inves
The aim of this thesis was mainly to find out the conditions under which a modernisation of the standardisation process could realistically take place, in order to allow the inclusion of parameters that are currently ignored. The necessary balance between private interests and public good issues, and the need to take into the discussions leading to the adoption of standards, their generally heavy
Avhandlingen, som består av fyra delstudier, är en femårsuppföljning av kvinnliga missbrukare, som var tvångsomhändertagna på Lunden mellan januari 1997 och december 2000, och som genomgick en omfattande utredning. Klienterna har systematiskt utretts med psykologiska och neuropsykologiska test i samarbete med personal och Lundens psykiater. Test och skattningsskalor som använts är standardiserade The study focus is a sample of women with drug dependence admitted to compulsory treatment according to the Swedish act of care for drug abusers (LVM, 1988:870) and according to the act of care for young persons (LVU, 1990:52). From a cohort consecutively admitted to residential treatment at Lunden between 1997 and 2000, a sample of 132 women was selected for a five year follow-up. They were evalu
The definition of Validation and Verification (V&V) tests for analysing evacuation model capabilities is the object of a large debate among researchers given the lack of an international standard. Four main types of tests have been reported in the literature, 1) component testing, 2) functional verification, 3) qualitative verification and 4) quantitative validation. An important issue relates
