A primary purpose of traditional systems analysis is seen as ‘capture’ or ‘elicitation’ of user requirements, in order to produce specifications as a basis for information systems design. Such a view presupposes that user requirements are pre-existing and clear, and that the particular ‘users’ concerned know what they are, and can therefore articulate them. We would argue that none of these assump

Popular Abstract in Swedish Ett flertal produkter som framställs inom den kemiska och biotekniska industrin produceras i stora turbinomrörda tankar. Kvaliteten av produkten och utbytet av processen påverkas av blandningsförhållandena i dessa tankar. Blandningsförhållandena i processen påverkas av vätskans hastighet och dess intensitet. I olika regioner av reaktorn, impeller regionen och bulk regiTurbine-agitated tanks are used in chemical and biochemical applications to increase mixing which, in turn, affects the yield, productivity and product quality. The purpose of this work was to study the hydrodynamic influence on the scale-up of turbine-agitated tanks, commonly used in fermentation. Local turbulent flow parameters, the turbulent kinetic energy and the local energy dissipation rate,

As custom architectures become more and more common for DSP applications, instruction selection and scheduling for such applications and architectures become important topics. In this paper, we explore the effects of defining the problem of finding an optimal instruction selection and scheduling as a constraint satisfaction problem (CSP). We incorporate methods based on sub-graph isomorphism and g

In this thesis the evolution and consequences of multiple queen societies (polygyny) in leptothoracine ants are discussed. The majority of the studies have been conducted on the boreal species Leptothorax acervorum, but polygynous behaviour is also discussed in a broader sense concerning ant species in general. In L. acervorum the intra-colony relatedness is high. Relatedness in monogynous colonie

The focus of this thesis is on the calculation of potential energy surfaces and on the study of vibrational properties. For example: - We have developed a new method for calculation of Franck-Condon factors. - We have calculated full energy surfaces of the ground (X2A’) the excited (B2A’) states of the formyl radical. These surfaces have been used to study the hydrocarbon flame bands of the B2A’

Johan Jakob Borelius var professor i teoretisk filosofi vid Lunds universitet från 1866-1898. Boken belyser den syn på filosofin som Borelius gav uttryck för när han tillträdde sin professur. Vidare ges en inblick i hans trettioåriga verksamhet som professor. Särskilt utrymme ägnas åt Borelius syn på motsägelsesatsens innebörd och giltighet, liksom det stora verket "Metafysik" som han arbetade på