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Popular Abstract in Swedish Reglering och kommunikation med störande brus Hur kan man på bästa möjliga sätt skicka data, till exempel en ljudsignal, när kommunikationen störs av brus och ändå måste ske snabbt? Och hur kan man på bästa sätt styra en process när styrsystemet begränsas av dålig kommunikation? Dessa frågor har undersökts i avhandlingen Control and Communication with Signalto-Noise This thesis is about two problems in the intersection of communication and control theory. Their common feature is that they involve communication over an additive white noise channel with a signal-to-noise ratio (SNR) constraint. The first problem concerns the transmission of a real-valued signal from a partially observed Markov source. The distortion criterion is the mean squared error and the

Syftet med denna studie är att analysera hur ungdomar som varit placerade på särskilda ungdomshem upplever, definierar och tolkar ett behandlingsprojekt, som involverade olika myndigheter, benämnt Motverka Våld och Gäng. Dessutom uppmärksammas hur de tolkade de i projektet anställda samordnarna. Den personliga aspekten i relationen mellan ungdomar och samordnare framställs som viktig och det verkThe purpose of this study is to analyse the way young people who were institutionalised in so called special youth-homes experienced, defined and iterpreted on the one hand the project “Motverka Våld och Gäng” (meaning: “Counteract Violence and Gangs”), and on the other hand the Coordinators employed in this project. There is a big variation in the perception of the coordinators. One common deno

Järnvägen utgör grunden för pendeltrafiken inom region Stockholm och störningar i järnvägstrafiken påverkar många resenärer. En vanlig orsak till störningar i järnvägstrafiken är att obehöriga personer vistas vid spåren. Mellan 2010-01-01 och 2015-05-18 har närmare 1100 händelser med obehöriga vid spår rapporterats i region Stockholm, varav drygt 80 fall resulterat i personpåkörningar med dödligt The railway constitutes the foundation of commuting in the region of Stockholm and disruptions in the railway traffic hence affects a lot of citizens. A common cause of disruptions is railroad trespassing and between 2010-01-01 and 2015-05-18 more than 1100 cases were reported in the region of Stockholm. The aim of this report is to map the grounds for railroad trespassing and to find measures to

Astrocytes play a critical role during the development and the maintenance of the CNS in health and disease. Yet, their lack of accessibility from fetuses and from the brain of diseased patients has hindered our understanding of their full implication in developmental and pathogenic processes. Human pluripotent stem cells (PSCs) are an alternative source to obtain large quantities of astrocytes in

Popular Abstract in Swedish Ordet diffusion kommer från det latinska ordet diffu´sio som betyder spridning. Diffusion förekommer nästan överallt, även om man inte alltid kan se det. Exempelvis består all den luft som vi andas in av en mängd molekyler som diffunderar fram och tillbaka. Eller så kan det vara vattenmolekyler som diffunderar in till plåten på bilen och gör så att den rostar, eller varHindered diffusion occurs in the most different processes, as has been described in this thesis. It is very important to have an understanding of the influence of hindered diffusion on the mass transfer rate, especially when competing rate processes are acting simultaneously. Using mathematical modeling and simulation makes it possible to predict the effects of hindered diffusion. The systems that

Objective Intrauterine growth restriction (IUGR) is a recognized risk factor for neurological deficits later in life. Abnormal fetal blood flow in the presence of IUGR helps to distinguish fetuses with true growth impairment from those that are small but normally grown. This study aimed to evaluate the influence of IUGR with abnormal fetal blood flow on cognitive function and psychological develop

Background: The variation in retinal nerve fibre layer thickness (RNFLT) as measured by Stratus optical coherence tomography (OCT) in healthy subjects may be reduced when the effect on RNFLT measurements of factors other than disease is corrected for, and this may improve the diagnostic accuracy in glaucoma. With this perspective we evaluated the isolated and combined effects of factors potentiall

The underpinning idea of extended producer responsibility rules has been to provide incentives for manufacturers to design products that are easy to recycle. However, current incentives for design for recycling are limited, due to the problems in assigning costs for collection and recycling of individual products to the relevant producers. An alternative way to promote design for recycling, or to

Abstract not available

Together with response time the force of responses to stimuli can provide important clues about cognitive and affective processes. However, while there has been much discussion of factors involved in the accurate measurement of response time (RT), key issues and assumptions in assessment of response force (RF) have been far less studied. Here, hierarchical Bayesian analysis is used to examine the

The paper examines the metaphysical ideas employed to embed Hellenistic astrology in an Indian religious and cultural context, relating them to questions of causality, determinism and moral freedom. These ideas are contrasted against the largely Thesophical adaptation of the same concepts, which in the 19th and 20th centuries formed the emerging modern astrology in Europe, and which led it to aban

The paper provides an overview and preliminary results from ongoing research with the aim to evolve cross-laminated timber (CLT) into the next generation of Tailored Laminated Timber (TLT). This is done by exploring innovative concepts that optimize the mechanical performance, while simultaneously ensuring adherence to circular economy principles. The current study aims at investigating the potent