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We use a microscopic Slater-Koster tight-binding model to study the magnetic properties of ferromagnetic metal nanoparticles containing up to 260 atoms. We compute the total energy as a function of the magnetization direction and the ensuing magnetic anisotropy. In an external magnetic field, the ground-state energy as a function of the magnetization orientation is characterized by minima separate
The importance of prioritising requirements is widely recognised. A number of different techniques for prioritising requirements have been proposed, some based on an ordinal scale, others on a ratio scale. Some measurement scales provide more information than others, i.e. the ratio scale is richer than the ordinal scale. This paper aims to investigate the differences between the scales used in pri
Resource optimization mechanisms, as admission control and traffic management, require accurate performance models that capture the dynamics of the system during high loads. The main objective of this paper is to develop an accurate performance model for database servers in a telecommunication service management system. We investigate the use of a server model with load dependency. Concurrent requ
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Popular Abstract in Swedish När folk frågat mig vad det är egentligen jag håller på med på labbet, brukar jag lite slarvigt svara att jag jobbar med blod. Jag tänkte här lite närmare gå igenom vad det är jag egentligen gjorde på labbet för Er som undrat. Jag har studerat ett protein i blodkoagulationen som heter faktor V (läs 5). För att man ska förstå varför detta protein är viktigt, måste man noThe homologous blood coagulation factors V (FV) and factor VIII (FVIII) are important at sites of vascular injury for the amplification of the clotting cascade. Activated FV (FVa) serves as a cofactor to the enzyme activated factor X (FXa) in the activation of prothrombin. This complex is called the prothrombinase complex. FVIII functions as a cofactor to the enzyme activated factor IX (FIXa) in t
In Proton Exchange Membrane Fuel Cell (PEMFC) systems, an intercooler contributes to proper thermal management of the reactant air into the cathode. However, the structure/performance of it is not clear yet. In this paper, two case studies concerning an intercooler in a 100 kW PEMFC system are carried out. Plate-fin and tube-fin heat exchangers are analyzed as the intercooler, in terms of volume,
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Popular Abstract in Swedish Denna avhandling gäller glibenklamid som är vårt vanligaste läkemedel för oralt bruk i behandlingen av diabetes mellitus, typ 2 (åldersdiabetes). Glibenklamids upptag, fördelning, omsättning och utsöndring har studerats i detalj hos friska människor samt hos patienter med diabetes. Därtill har läkemedlets och dess metaboliters kinetik relaterats till farmako-dynamiska eGlibenclamide (Gb) is the most commonly employed sulphonylurea worldwide for the treatment of non-insulin-dependent diabetes mellitus (NIDDM). There has been uncertainty concerning its pharmacokinetics (PK) and pharmacodynamics (PD). Numerous long-lasting hypoglycemic reactions, which have sometimes been fatal, have been reported and have been difficult to reconsile with an allegedly short elimina
We consider the decoding of LDPC codes in presence of non-Gaussian noise, especially a set of ¿-mixture models. For each of these models, the optimal LLRs are presented. We study the performance degradation due to the use of incorrect LLR in presence of a given noise model. Without modifying the existing LDPC decoder, we propose robust initial LLR which require minimum knowledge about the underly
Ion beam methods are used to analyse material (Ion Beam Analysis, IBA) and to modify the target (Ion Beam Modification of Materials, IBMM). In this thesis, ion beams have been used in various IBA techniques to investigate the surface nanometre structures, and also in an ion beam synthesis (IBS) technique to form thin films and to modify material properties. The work is divided into two main parts:
