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Popular Abstract in English A food web is a network diagram that describes which species that eat each other in nature. Such networks in marine environments e.g. show that cod eat herring, sprat, and sandeel - and that these eat numerous other species. Understanding of these relationships is a fundamental scientific problem, which can be used to assess the consequences for the stocks when we e.g. This thesis sets out a food web framework for size-structured populations. The framework enables an ecological approach to food web modelling as the individual life-history from birth, through maturation, and ultimately death is explicitly resolved with the use of bioenergetics based on individual body size. Each population resolves size-structure through a size-spectrum containing the individual

This article discusses problems concerning the use of colour in botanical illustrations, focusing on a specific species, the Orchis ustulata (Burnt Orchid). In 1901–1905 the Swedish botanist Carl Lindman (1856–1928) was responsible for the publication of the Swedish flora Bilder ur Nordens flora, that was, in some ways, a reworking of J. W. Palmstruch’s Svensk botanik (1802–1843). Palmstruch’s hanThis article discusses problems concerning the use of colour in botanical illustrations, focusing on a specific species, the Orchis ustulata (Burnt Orchid). In 1901-1905 the Swedish botanist Carl Lindman (1856-1928) was responsible for the publication of the Swedish flora Bilder ur Nordens flora, that was, in some ways, a reworking of J. W. Palmstruch’s Svensk botanik (1802-1843). Palmstruch’s han

Popular Abstract in Swedish Hållbara matvanor - från jord till bord I Sverige äter vi i genomsnitt 800 kg mat per person och år. Vad och hur mycket vi väljer att stoppar i oss har stor betydelse både för planetens och vårt eget välmående. Den här avhandlingen handlar om hur våra val av livsmedel i den dagliga kosten påverkar miljön och hälsan. Vilken typ av livsmedel vi väljer att äta och dessa Food production and consumption are key drivers of environmental pressures and are essential factors in the promotion and maintenance of health. Production of food occupies more than one third of global land areas and is estimated to be responsible for some 30% of global greenhouse gas emissions. At the same time, we live in a world where nearly one billion people go hungry and even more people su

There is a great potential for phasor measurement applications in Scandinavia, mainly due to the long distance power transmission and limited transmission capacity expansion possibilities. Smart control, based on phasor measurements, can be used as an alternative to additional transmission lines, to increase power transmission capacity. Also the matter of damping is more and more becoming a key is

This paper describes in what ways hierarchical organizations influence the utilization and dissemination of knowledge. Particular attention will be paid to the role that tacit knowledge has. The reporting system of incidents is one element in a larger institutional process, often termed 'lessons learned' (LL). This process helps to suggest solutions to identify shortcomings and facilitates in maki

We propose a method for maximising the affine correlation between images. The method is more global in its search than for example steepest descent based methods. In a first approximation, there is no need to compute any derivatives and it is shown that the results are very good. The method is based on certain changes of coordinates in the images and extensive use of the fast Fourier transformatio

Popular Abstract in Swedish Den cancerskyddande genen p53 är av betydelse för att göra leukemiceller friska. Blodbildning. Blodceller är nödvändiga för vårt välbefinnande och vår överlevnad. Det finns flera olika typer med egna specialiserade funktioner. Så krävs t. ex. röda blodkroppar för syresättning och vita blodkroppar för att bekämpa infektioner. Blodcellerna har begränsad överlevnad; när Leukemic cells suffer from an impaired ability to differentiate due to inherited or acquired genetic lesions. These genetic changes can sometimes be bypassed with various compounds both in vitro, and, more rarely, in vivo, thus inducing terminal differentiation of the leukemic cells. Differentiation of both leukemic and normal hematopoietic cells is believed to be intimately coupled to cell cycle

A thin resistive sheet is described by its sheet conductance, and the electric and magnetic dipole moments per unit area. All three properties can be controlled by the material parameters and geometry of the sheet, for instance by making a periodic pattern of holes in it. A mathematical analysis of the low frequency limit of Maxwell's equations in a periodic setting generates a hierarchy of local

When a mobile station moves along a trajectory, it will see different parts of the same scatterers or scatterer groups during its movement. In this paper, we present a new method to identify such physical clusters of scatterers, and the corresponding groups of multipath components (MPCs) interacting with those clusters, from measurements of channel impulse responses. The method is based on identif