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In this paper we propose a new physically motivated model that allows to study the interaction between the antennas and the propagation channel for Multiple-Input Multiple-Output (MIMO) systems. The key tools employed in the model are the expansion coefficients of the electromagnetic field in spherical vector waves and the scattering matrix representation of the properties of the antenna. We deriv
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Man kan kalla dem hackers, hacktivister eller nätaktivister. Själva ser de sig som tekniskt intresserade, en teknisk gemenskap. Deras långsiktigt politiska mål skiftar, de saknar gemensam ideologi och fasta strukturer. Det som delas är en innerlig fascination för tekniken bakom nätet – och kanske en minst lika innerlig aversion för destruktion av detta.
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Abstract in UndeterminedCharacteristic of ecosystems is that different organisms can have similar functions and hence provide similar ecosystem services. Consequently functional diversity can maintain the rate of services despite environmental fluctuations. In this paper we present a method for estimating the resilience value of biodiversity. Central to a resilience perspective on biological conse
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Det faktum att regeringen och staten har kunnat komplettera den kapitalistiska ekonomin med nya spelregler visar att staten inte är klavbunden av ekonomin. En rad av de reformer som har gjorts i Sverige under efterkrigstiden får sägas ha gått stick i stäv mot den härskande borgarklassens kortsiktiga intressen, medan de på lång sikt visat sig vara positiva för kapitalismens överlevnad som ekonomisk
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In this paper, then, I focus on the (inter)titles. The guiding question being whether the titles were added or used either with the individual psalm in view, or with some larger collection, I first provide an overview of the terminology of Genette, where e.g. the difference between a title and an intertitle is discussed. In part 2, I present an analysis of the (inter)titles in the Book of Psalms i
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User-related effects of a Driver Assistance System for Continuous Support on driver behaviour, were evaluated in a field test carried out in 2013. Twenty four drivers took part in test drives with a within-subject design along a 53 km test route containing motorway and rural-road sections. Driving data was logged and the test drivers were observed by means of an in-car observation method (Wiener F