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In this work the problem of designing feedback controllers for the rejection of narrow-band disturbances is considered. The design technique proposed herein is based upon a well-suited overparameterization of a standard model-based minimum-variance controller; the extra-degrees-of-freedom so introduced are used to improve the performence of the basic controller. In particular, the problem of impro

Background: Immediate recurrence of atrial fibrillation (IRAF) occurs frequently after electrical cardioversion, its electrophysiological determinants and prognostic significance hove, however, not been studied in detail. This Study aimed to explore (1) the association of IRAF with clinical characteristics, pulmonary vein (PV) arrhythmogenicity as well as atrial electrophysiologic properties and (

Persons with autism develop along trajectories that differ from the typical. Therefore, development itself gives important clues for understanding the behavioral profile characteristic of autism. Developing autism means being different, not necessarily being deficient. The infant and her environment coevolve, and therefore experience of a dynamic world is important in shaping both brain and behav

Popular Abstract in Swedish Avhandlingen består av tre teoretiska uppsatser inom förhandlingsteori och Social choice. Den första uppsatsen försöker bibehålla den entydiga jämvikten i Rubinsteins förhandlingsmodell när man utökar förhandlingsspelet till att omfatta fler än två spelare. Vi åstadkommer en entydig delspelsperfekt jämvikt i en förhandlingsmodell med tre spelare genom att anta att spelaThis thesis consists of three theoretical essays on Bargaining and Social Choice. The first essay addresses the problem of retaining the uniqueness of equilibrium when extending the Rubinstein model to accommodate more than two players. We achieve a unique subgame perfect equilibrium in a bargaining model with three players by assuming that the players make demands in a clockwise order and practic

This study investigates factors of importance for tadpoles survival and metamorph production in the common frog Rana temporaria. It also assess the importance of this for the population dynamics of the species. Eighteen ponds were studied for up to 8 years. Data collected each year included: number of spawn clumps deposited, tadpole number and metamorph number. The permanency of the ponds was also

An experimental study of the normalized three-jet rate of b quark events with respect to light quarks events (light = l equivalent to u, d, s) has been performed using the CAMBRIDGE and DURHAM jet algorithms. The data used were collected by the DELPHI experiment at LEP on the Z peak from 1994 to 2000. The results are found to agree with theoretical predictions treating mass corrections at next-to-

Reactive oxygen species (ROS) produced by the phagocyte NADPH oxidase complex are important in the killing of invading pathogens. Lately, a role of ROS has been suggested in regulation of the immune system. This was further highlighted when the Ncf1 gene, encoding a subunit of the NADPH oxidase complex, was found to regulate arthritis severity in rats. Interestingly, the fact that increased arthri

Thrainsdottir S, Malik RA, Rosén I, Jakobsson F, Bakhtadze E, Petersson J, Sundkvist G, Dahlin LB. Sural nerve biopsy may predict future nerve dysfunction. Acta Neurol Scand: DOI: 10.1111/j.1600-0404.2008.01118.x. (c) 2008 The Authors Journal compilation (c) 2008 Blackwell Munksgaard.Objective - Sural nerve pathology in peripheral neuropathy shows correlation with clinical findings and neurophysio

Prion protein (PrP) is an endogenous protein involved in the pathogenesis of bovine spongiform encephalopathy and Creutzfeldt-Jakob disease. Murine PrP has been reported to bind C1q and activate the classical pathway of complement in a copper-dependent manner. Here we show that various conformational isoforms (native, amyloid fibrils, and beta-oligomers) of recombinant human PrP (90-231 and 121-23

T cells have been attributed an important role in modulating repair responses following vascular injury. The aim of this study was to investigate the role of different T cell subsets in this context.

Growth from straight cracks is studied, both for loading in pure mode I or II and for mixed mode loading. Small scale yielding and a plane condition are assumed. Growth is assumed to take place in either mode I or mode II. Loss of directional stability sometimes occurs even from cracks that seem destined for continued growth straight forward. A striking example is the case of collinear cracks unde

Abstract in UndeterminedUsing an exact circuit analogy for the scattering ofvector spherical waves, it is shown how the problem of determiningthe optimal scattering bounds for a homogeneous spherein its high-contrast limit is identical to the closely related, andyet very different problem of finding the broadband tuning limitsof the spherical waves. Using integral relations similar to Fano’sbroadb

BACKGROUND: The rare p phenotype is found at a higher frequency in Amish people than in other populations. Different mutations in the 4-alpha-galactosyltransferase gene (A4GALT), responsible for synthesis of P(k) (Gb(3)) antigen, have been found to cause the P(k)-deficient p phenotype. The aim of this study was to explore the molecular background of the p phenotype in people of Amish origin. STUDY