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In order to prevent or modify the processes of bone degeneration the modeling and remodeling of bone tissue must be better understood. In this thesis it is assumed that the primary condition leading to bone growth is a change of the chemical environment caused by transport of matter resulting from stress driven diffusion. The change in the chemical environment may consist of changes in the concent
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We propose a distributed learning algorithm for fair scheduling in common-pool games. Common-pool games are strategic-form games where multiple agents compete over utilizing a limited common resource. A characteristic example is the medium access control problem in wireless communications, where multiple users need to decide how to share a single communication channel so that there are no collisio
Detta är introduktionskapitet till rapporten "DigiTrust: Tillit i det digitala. Tvärvetenskapliga perspektiv från ett forskningsprojekt", där forskargruppsledarna beskriver grunderna för projektet.
Denna avhandling handlar om teoretisk partikelfysik. Partikelfysik handlar om elementarpartiklar och hur dessa växelverkar med varandra, dvs vilka krafter som verkar mellan dem. Detta är hur materien ser ut på den minsta skala vi har kunnat studera experimentellt. Den teori som beskriver de starka, svaga och elektromagnetiska krafterna och de materiepartiklar som vi känner till, kvarkar och leptonThis thesis includes two topics.The first three papers is the major part of this thesis, which is about higher order calculations in the effective field theories of three QCD-like theories. These three QCD-like theories are distinguished by having quarks in a complex, real or pseudo-real representation of gauge group. We wrote their effective field theories in a very similar way so that the calcul
Human activity is constantly causing environmental problems due to production and release of numerous chemicals. A group of compounds of special concern is persistent organic pollutants (POP). These toxic, lipophilic chemicals have a high chemical and biological stability, and tend to accumulate in the lipid phase of living organisms. A major sink for POPs are sediments, and consequently these are
Popular Abstract in Swedish Att avstå från och att avbryta livsuppehållande behandlingar på intensivvårdsavdelningar. I mitten på 1980-talet träffade jag en 16-årig flicka, som jag kallar för Annie, som patient på en intensivvårdsavdelning. Annie var förlamad på grund av en förlossningsskada. Hon hade inte tidigare behövt sjukhusvård. Nu behövde respiratorhjälp på grund av en lunginflammation. TrMany deaths in intensive care units are preceded by decisions to withhold or withdraw life-sustaining treatment. Under what conditions are forgoing life-sustaining treatment considered appropiate, when is it optitional and when is it wrong? Relevant guidelines are essential to help medical decisionmakers, but they cannot be established only from medical knowledge. They also must be related to basi
Popular Abstract in Swedish Företag som idag är verksamma inom tillverkning och handel möter en allt hårdare konkurrens, vilket bland annat kan förklaras av att förändringar sker i allt snabbare takt, produktlivscykler blir allt kortare, samt att konkurrensen från leverantörer på avlägsna marknader blir allt mer påtaglig. Flera av dessa förändringsprocesser är på något sätt kopplade till utvecklinThis Ph.D. thesis is about how the design of measurement systems may influence-or even drive-the integration of firms in supply chains, and is based on research presented in my licentiate thesisR. The research aims at providing a conceptual framework for designing measurement systems in supply chains, and at supporting firms in their quest for ways of developing closer relationships with suppliers
The degradation of different polyethylenes, LDPE, LLDPE, and HDPE, with and without antioxidants and at different oxygen concentrations in the polymer granulates have been studied in extrusion coating processing. The degradation was followed by On Line Rheometry, Size Exclusion Chromatography, Surface Oxidation Index measurements, and GC-MS Chromatography. The degradations starts in the extruder w
Popular Abstract in English Proteins are smart molecules. They act in a vast variety of roles, for instance as transporters, messengers, catalysts, warriors and scaffolds. The ability of a specific protein to perform a task is closely related to its three-dimensional shape (native fold). However, not all proteins encoded in human genome have a structure; some of them are devoid of a well-defined sProtein misfolding is a frequently occurring event in living cells and without the quality control, the consequences are disasterous. In this thesis, we studied protein misfolding in vitro by employing a variety of fluorophores, to either detect the highly ordered aggregates of intrinsically disordered proteins/peptides or slight misfolding of a natively folded protein. Misfolding and concurrent
Boken handlar om slaveri och slavhandel i Gamla världen från tidernas begynnelse till 1500-talet. Framför allt fokuserar boken på framväxten av olika former av ofrihet via antingen krig eller fattigdom, former som i ett senare skede av historien alltmer kom att glida samman. Tonvikten ligger på husslaveri, men även plantageslaveri och soldatslaveri avhandlas. Åtskilliga kapitel ägnas åt den nordis
