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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

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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

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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

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To further the use of cluster and GRID resource, it is important to provide the user with a user friendly environment, providing command line utilities, graphical user interfaces and web access. This paper describes the tools developed for use at cluster at the Center for Technical and Scienti c Computing at Lund University, Lunarc.

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This study gives a short description of nonequilibrium and many body effects in realistic simulation of intersubband emitters. Calculations are based on the self-consistent solution of the quantum kinetic equations under operating steady-state conditions. Scattering with phonons is included by means of a self-energy in the Dyson equation, and electron-electron interaction is treated in mean field