The atrial activity of the human heart is normally visible in the ECG as a P-wave. In patients with intermittent atrial fibrilation, a different P-wave morphology can sometimes be seen, indicating atrial conduction defects. The purpose of this study was to develop a method to discriminate between such P-waves and normal ones. 20 recordings of each type were used in a classification which, based on

This study is motivated by the need to know the characteristics of the learning processes in tongue-computer interaction and to obtain a useful insight to a better design of the tongue-computer interface for computer text input. Tongue-typing can be a good alternative to hand input methods for physically disabled individuals or tasks where hand-typing is not possible. In order to evaluate the proc

The probability for errors to occur in electronic systems is not known in advance, but depends on many factors including influence from the environment where the system operates. In this paper, it is demonstrated that inaccurate estimates of the error probability lead to loss of performance in a well known fault tolerance technique, Roll-back Recovery with checkpointing (RRC). To regain the lost p

This paper treats model reduction of linear time-varying models in continuous time. The method proposed is based on time-varying Lyapunov inequalities and balancing of Gramians. An error bound for truncated models that generalizes the well-known 'twice-the-sum-of-the-tail'-formula for time-invariant balanced systems is obtained. Input-output stability of truncated balanced models is also proved.

Abstract not available

In this paper, we present a new topology to implement a passive 180° phase shifter using on-chip auto-transformer in an SOS process. The measured results indicate a phase variation of less than 2° over the frequency range of 1.8-2.4GHz. An insertion loss of 2.3dB was measured at 2.1GHz. The phase shifter has a small footprint of 0.3 × 0.7mm2, which is almost three times less than a traditional hig

Popular Abstract in Swedish Stärkelse och cellulosa är naturligt förekommande polymerer av glukos. Dessa polymerer har varit viktiga resurser för människan genom historien. Stärkelse är en viktig näringskälla som det finns rikligt av i sädessorter och potatis. Cellulosa är en viktig komponent i byggmaterial (t.ex. trä), textilier (t.ex. bomullsfibrer), och papper. Stärkelse används dessutom som baStarches and celluloses can be chemically modified in order to affect their physiochemical properties. Modification of these carbohydrate polymers entails derivatising their free hydroxyl groups with functional groups. Which properties are obtained depends on the nature of the functional groups as well as on how they are distributed throughout the polymeric structure of the carbohydrate. Unfortuna

Svensk universitetsgrammatik för nybörjare behandlar begreppet grammatik ur olika synvinklar. De inledande kapitlen ägnas åt genomgångar av svenskans språkljud, böjningslära och ordbildning. I de efterföljande kapitlen ges ingående beskrivningar av frasstruktur, primära satsdelar och fullständig satslösning, liksom av grammatikens största enheter, meningar, makrosyntagmer och yttranden. Men förfat

Popular Abstract in Swedish Glukos är den främsta energikällan för de flesta celler i kroppen. Det är av stor vikt att mängden glukos hålls på en jämn nivå, eftersom framförallt våra celler i hjärnan är mycket känsliga för stora variationer av glukoshalten i blodet. Regleringen av mängden glukos i blodet kontrolleras av hormonen insulin och glukagon. Insulin utsöndras från beta-celler och glukagonType-2 diabetes is characterized by impaired insulin secretion associated with excess glucagon release. Exocytosis of insulin- or glucagon-containing granules is initiated by Ca2+-influx through voltage-dependent Ca2+-channels and is modulated by the second messengers such as cAMP. Membrane capacitance measurements were used in this study to investigate the cellular mechanisms behind cAMP-regulate

Reducing poverty and social exclusion is one of the main challenges for ensuring social cohesion in Europe. The research project COPE – Combating Poverty in Europe: Re-organising Active Inclusion through Participatory and Integrated Modes of Multilevel Governance’ – analyses trends of poverty and social exclusion in Europe, and examines the dynamics of minimum income protection policies that poten

In this thesis the action of the Thermomyces lanuginosa lipase (TLL) on "real" substrates, that is, lipid aggregates - vesicles, micelles, emulsions, gels and liquid crystals is discussed. Even for a pure triolein, the system becomes quite complex as the lipolytic process starts, both in terms of structure and composition, involving 5 additional components - diolein (DO), monoolein (MO), oleic aci