Sökresultat

Filtyp

Din sökning på "*" gav 534580 sökträffar

Distributed space-time code for amplify-and-forward cooperative networks

Cooperative diversity using distributed space-time codes has been recently proposed to form virtual antennas in order to achieve diversity gain. In this paper, we propose a distributed space-time coding with amplify-and-forward relaying. Motivated by protocol (III) presented in, we propose a distributed space-time code for an arbitrary number of relay nodes. The pairwise error probability (PEP) is

New phenomena discovered in the atmospheres of normal late-B type stars

We report detections of weak emission lines in main sequence B starspectra observed at high spectral resolution and high signal-to-noiseratio. The emission lines originate from highly excited states ofsingle-ionized species. The mechanism for populating these excitedstates is currently under investigation and the results may have asignificant bearing upon our understanding of the outermost atmosph

Rudolf Kjellén: Nordic biopolitics before the welfare state

This article aims to contribute to the history of biopolitical thought through a more accurate understanding of the Swedish professor of political science Rudolf Kjellén considered both in his historical and political context. Kjellén coined the term ‘biopolitics’, as early as 1905, in a two-volume work entitled The Great Powers, and developed it even further in a 1916 book entitled The State as a

Att vara universitetslärare

Väldigt roligt är det att få skriva om just detta. Det är ju universitetslärare jag varit i halva mitt liv. Under ständigt funderande över vad jag gör och vad det är bra för. Vilka sammanhang jag finns i. Här följer ett litet urval av mina erfarenheter, tankar och drömmar - de flesta framtidsinriktade.