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There are increasing reports of deaths and serious complications associated with the use of negative pressure wound therapy (NPWT). Bleeding may occur in patients when NPWT is applied to a wound with exposed blood vessels or vascular grafts, possibly due to mechanical deformation and hypoperfusion of the vessel walls. Recent evidence suggests that using a rigid barrier disc to protect underlying t
The language on Swedish rune stones written in the 16 character alphabet (futhark) constitutes a very special fragment of the Swedish of its time (about 800-1100). Because of the ritual character of the inscriptions the language is rather standardized. The greatest variation is in proper names. As has long been noted the typical formula is (in English translation): N raised this stone after M his
The thesis aims at finding means for assessing and improving the requirements engineering (RE) process in order to enhance software product quality and increase the competitive edge of software organisations. Quality can be defined as the ability to satisfy the customers’ expectations. Thus, from an RE perspective, improved quality implies improved requirements elicitation and prioritisation effor
To implement maximum likelihood estimation in state-space models, the log-likelihood function must be approximated. We study such approximations based on particle filters, and in particular conditions for consistency of the corresponding approximate maximum likelihood estimator. Numerical results illustrate the theory.
In large software organizations with a product line development approach a selective testing of product variants is necessary in order to keep pace with the decreased development time for new products, enabled by the systematic reuse. The close relationship between products in product line indicates an option to reduce the testing effort due to redundancy. In many cases test selection is performed
Objectives. Patients diagnosed with RA have an increased risk of some cancers. However, limited data are available on the important issue of prognosis of RA patients with cancer. Methods. RA patients were identified from the Swedish Hospital Discharge Register by linkage to the Cancer Registry. Follow-up of patients was started from the date of diagnosis of cancer through year 2006. Hazard ratios
In the course of our educational life we are introduced to various subject areas, each with its specific way of representing knowledge. The challenge for the learner is to be able to think in ways that are supported by, and match, the representational format. A fundamental question for the science of learning concerns how this is achieved. In this thesis, it will be argued that by observing indivi
Objectives. Surgical sites infections are very expensive and the total costs for coronary artery bypass grafting (CABG) surgery followed by deep sternal wound infection (DSWI) with conventional therapy are estimated to be 2.8 times that for normal, CABG surgery. Promising results have been reported with vacuum-assisted closure (VAC) therapy in patients with DSWI. This study presents the cost of VA
Popular Abstract in Swedish För att vi ska kunna lösa globala problem som miljöförstöring och fattigdom är det många som menar att den privata sektorn måste involveras på ett aktivt sätt. I den här avhandlingen, som består av en introduktion och fem vetenskapliga artiklar som tidigare publicerats i internationella tidskrifter, studeras ett exempel på hur privata aktörer faktiskt redan involverats It is commonly argued that the private sector needs to become actively involved for society to stand a chance of solving the most pressing global problems. This thesis, consisting of five articles previously published in refereed journals and an introductory essay, studies one case of private actor participation in global environmental governance: the Kyoto Protocol’s Clean Development Mechanism (
