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Popular Abstract in Swedish I vårt vardagliga liv träffar vi på en mängd apparater som använder sig av överföring och lagring av information. Ett par exempel på sådana är CD-spelare, mobiltelefoner och datorer. I de flesta av alla dessa apparater lagras eller överförs informationen på digital form, det vill säga man använder sig av ett ändligt antal symboler för att representera informationen. EttThis thesis focuses on different convolutional coding constructions for digital communication systems, and on methods to analyze these constructions. The work presented in the thesis can be divided into three main areas; error probability bounds for convolutional codes, analysis of multilevel modulation, and investigation of low-density parity-check convolutional codes. New bounds are developed f

Popular Abstract in Swedish Strålbehandling har sedan länge visat sig vara en bra metod för att behandla patienter med cancer. Den nya teknik som har introducerats under de senaste åren har möjliggjort ökade stråldoser till än mer begränsade volymer. Samtidigt innebär detta att ökade krav ställs på att man försäkrar sig om att den volym man bestrålar är den volym som innehåller tumörceller och attMethods for ensuring that the intended volume receives the intended absorbed dose in radiotherapy have been investigated. In order to optimise radiation treatment of cancer, geometric variations in the treatment chain need to be controlled. Furthermore, hazards potentially leading to unintended irradiation need to be controlled. While the required methods for optimisation of irradiation are divers

Synthetic glycopeptides are valuable tools for studies of the biological functions of protein-bound carbohydrates. Today glycopeptides are efficiently prepared by solid-phase synthesis according to the 9-fluorenylmethoxycarbonyl (Fmoc) protocol, provided that suitable glycosylated amino acids are available. In this thesis commercial or readily accessible carbohydrate 1,2-trans peracetates were us

The MAX4 ring is intended to be the future user facility at MAXlab. The high-brilliance 3 GeV storage ring, equipped with small gap, short period superconducting undulators, demonstrates a high mean brilliance over a wide photon energy spectrum. The ring itself is defined from the routine operation of the small gap insertion devices, which is reflected in the small aperture of the ring magnets. Th

Motivational internalism - the idea that there is an intrinsic or necessary connection between moral judgment and moral motivation - is a central thesis in a number of metaethical debates. In conjunction with a Humean picture of motivation, it provides a challenge for cognitivist theories that take moral judgments to concern objective aspects of reality. Versions of internalism have potential impl