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Multiband diversity antenna performance study for mobile phones

Spatial diversity is a popular multiple antenna system technique, due to simplicity in implementation. However, its application has thus far been limited to systems where the electrical separation between adjacent antennas typically exceeds half a wavelength. This is because a more compact design induces higher antenna correlation and impedance mismatch, which results in lower diversity gains. In

Beta-Glycosidases from Hyperthermophiles as Biocatalysts

The thesis concerns glycosyl transfer with use of b-glycosidases, most of them from hyperthermophilic organisms. Both optimisation of the reaction conditions and protein engineering in terms of site-directed mutagenesis were used to improve b-glycosidase-catalysed reactions. The first part of the work deals with conversion of lactose into valuable products such as galacto-oligosaccharides (GOS) an

The capital cost of holding inventory - A real options approach

This thesis is based on three scientific papers dealing with costs and financial risks associated with keeping stock. Reasonable cost parameters are important to implement an effective inventory control system, which in turn is one of the key activities in logistics management. All three papers consider a single-level inventory system. Single-period, multi-period as well as continuous review syste

Market-Oriented Programming and its Application to Power Load Management

Popular Abstract in Swedish Avhandlingen studerar en ny programmeringsmetod, kallad marknads-orienterad programmering, och undersöker hur den kan användas i praktiska tillämpningar.Market-oriented programming is a new approach to design and implementation of resource allocation mechanisms in computer systems. It has its roots in different disciplines, such as economics and computer science (in particular the area of multi-agent systems). This thesis is divided into two different parts, focusing on: 1) central foundations and mechanisms of market-oriented programming, and 2)