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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
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
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.
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
A series of twenty controlled experiments was undertaken to determine if heat treatment alters the speed, intensity, or appearance of wear on the edges of flint tools. Four hypotheses were tested with the following results: Heat-treated tools wore more quickly and with more severity than tools which had not been heated. When used in the same fashion and on the same materials, heat-treated flakes s
