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The report describes a quality measurement for audio, both the theoretical background and implementation. It begins by describing the unlicensed methods the implementation is based on, Segmental SNR, Frequency Weighted Segmental SNR, Log-Likelihood Ratio, Cepstral Distance and Weighted Slope Spectral distance, and the commercial methods used as reference, PEAQ and PESQ. It also mentions the proble

Ambulatory ECG recordings are frequently corrupted by artifacts caused by, e.g., muscle activity or moving electrodes, which complicates the analysis of f-waves and motivates signal quality assessment to improve the reliability of f-wave analysis. Although many methods have been developed for assessing the quality of ECG signals in general, no method deals specifically with f-waves. This study pro

Popular Abstract in Swedish En fråga inom biologin som länge intresserat forskare är varför det ena könet hos många arter har så väl utvecklade ornament. Till dessa så kallade sekundära könskaraktärer (primära könskaraktärer är de som används vid själva fortplantningen) räknas till exempel påfåglars stjärtplymer och hönsfåglars kammar och sporrar. Dessa ornament förekommer oftast hos hanar och i pFemales often base their choice of mates on the expression, size or intensity, of male sexual ornaments. Indicator models of sexual selection assume that females assess male genetic quality through the expression of these secondary sexual characters. Several mechanisms that link the expression of sexual ornaments to genetic quality have been suggested. Many models assume that this link is individu

This paper evaluates the Swedish school reform that was implemented in 1992, at upper secondary school level. The reform implies that independent schools are welcome to compete on the school market and are publicly funded. This reform has led to an increase in the share of students attending independent schools. Several estimations are performed in this paper on what impact this increase of compet

Background and objectives: Fetal RHD genotyping of cell-free maternal plasma DNA from RhD negative pregnant women can be used to guide targeted antenatal and postnatal anti-D prophylaxis for the prevention of RhD immunization. To assure the quality of clinical testing, we conducted an external quality assessment workshop with the participation of 31 laboratories. Materials and methods: Aliquots of

This doctoral thesis revolves around the analysis of electrocardiogram (ECG) signals during atrial fibrillation (AF). Special emphasis is put on the atrial fibrillatory waves, sometimes called the f-waves, which is the ECG component reflecting the electrical activity of the atria. The thesis comprises an introduction and five papers that introduce and apply methods on ECG-based analysis of AF. Pap

(99m)Tc labelled macroaggregated albumin particles prepared from a commercial 'kit' have been tested in detail. With the introduction of the method of gel chromatography column scanning it became possible to make fast and simple quantitative measurements of the radiochemical purity. This was found to be the only reliable method for quantitative determination of non aggregated (99m)Tc labelled albu

The three basic paradigms of behaviour science, association, structure, and process, were used to anchor the simulation of new forms of social organization. These have been projected by means of a behaviour, a humanist, and a growth model. The Swedish model was also included as a possible point of reference. This article summarizes the results of two experiments, one on the assessment of quality o

Recent studies find that higher degrees of democracy are related to higher levels of bureaucratic quality. However, they only offer limited explanations for this pattern based on a unidimensional understanding of democracy. We argue that future uncertainties as perceived by the incumbent, the opposition, and voters are important for why bureaucratic reform takes place. Therefore, we expect no unif

In our experience, doctoral supervision seminars and training (and associated literature) focus the supervisor-student relationship to an extent largely leaving aspects of learning, enculturation and subject discipline aside. In 2006-2008 we therefore developed and implemented a 3-week programme compulsory for new primary research supervisors (docent degree) with a wider scope, at the faculties E

To gather information regarding how to best assist liver transplant recipients in improving their self‐care capacity and well‐being, we investigated their total health situation. A retrospective, cross‐sectional survey with up to a 10‐year follow‐up concerning experienced health and quality of life after liver transplantation (LTX) was conducted. The aim of this study was to provide descriptive da

To survey the quality of SNP genotyping, a joint Nordic quality assessment (QA) round was organized between 11 laboratories in the Nordic and Baltic countries. The QA round involved blinded genotyping of 47 DNA samples for 18 or six randomly selected SNPs. The methods used by the participating laboratories included all major platforms for small, to medium-size SNP genotyping. The laboratories used

The aim of the first this work part of the EU-project, Trial I, was to evaluate and possibly improve the CEC image criteria for radiographic chest images. Chest images of healthy volunteers were acquired using different technique factors. The image criteria were used as a tool to discriminate between the different images. The technique factors were chosen so that the image quality would differ sli

Executing an accurate full-reference metric such as VQM can take minutes in an average computer for just one user. Therefore, it can be unfeasible to analyze all the videos received by users in an IPTV network for example consisting of 10.000 users using a single computer running the VQM metric. One solution can be to use a lightweight no-reference metrics in addition to the full-reference metric