The Family of Belykh Maps
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The paper investigates the role of mobile entrepreneurs in spatial diffusion process of a rapidly expanding industry using the case of the knowledge-intensive ICT-services in Sweden over 1990-2010. The main contributions of this study are twofold. On the one hand, paper contributes to entrepreneurship research by showing that the spatial origin of an entrepreneur should be analysed not only in ter
Improving the accuracy of subsurface imaging is commonly the main incentive for including the effects of anisotropy in seismic processing. However, the anisotropy itself holds valuable information about rock properties and, as such, can be viewed as a seismic attribute. Here we summarize results from an integrated project that explored the potential to use observations of seismic anisotropy to int
The genus Nigritella (Orchidaceae-Orchidinae) is a complex of species at four different ploidy levels. Fourteen taxa at species or subspecies level have been distinguished. The triploid N. nigra ssp. nigra is endemic to Scandinavia, whereas the remaining taxa are confined to different mountain regions in Central and Southern Europe. The polyploids are of hybrid origin and have arisen from taxa at
The goal of the presented work is to provide support for software requirements engineering domain experts in modeling combinatorial optimization problems that arise in requirements prioritization and release planning. A Domain-Specific Language (DSL), called reqT/CSP, is presented that integrates constraints modeling with requirements modeling. The DSL is embedded in the object-functional Scala pr
This paper presents some methods of improving the simulation of human movements. Since we are developing a tool for the planning of environments for physically disabled persons, it is important to consider the future user’s abilities in particular. Methods such as the use of human models, acquiring joint ranges and motions (from MacReflex and DataGlove systems), editing postures and motions, setti
This thesis deals with two types of problems occurring in inventory theory; pooling of stock and perishable items. All three papers in this thesis consider inventory distribution systems with continuous review. In Paper I we consider a single-echelon inventory system with two identical locations. Demands are generated by stationary and independent Poisson processes. In this paper, we allow later