Abstract is not available

The distribution of the output error burst lengths from a Viterbi decoder is of particular interest in connection with concatenated coding systems, where the inner code is convolutional. From the expurgated, random, and sphere-packing exponents for block codes an upper bound on this distribution for the ensemble of periodically time-varying convolutional codes is obtained. Finally, the distributio

Popular Abstract in Swedish Bose-Einsteinkondensat är de kallaste system människan känner till, och de styrs helt av kvantmekaniska lagar. Därför har de många speciella egenskaper, som bland annat visar sig under rotation. De kan till exempel inte rotera med vilken hastighet som helst, utan bara vissa specifika hastigheter är tillåtna. Vidare kan man - under vissa omständigheter - få ett Bose-EinsIn this thesis, I explore the behavior of rotating ultra-cold Bose gases, by diagonalizing the Hamiltonian. This method has the advantage of being exact in the limit of weak interactions, and thus is a useful complement to the more commonly used Gross-Pitaevskii (GP) equation, which relies on a mean-field approximation. It is generally known that an ultra-cold Bose gas shows some remarkable proper

In Networked Control Systems, time-varying delays and loss of data are two important problems to be taken into account. In this paper, in order to face them, the design of a predictor-observer for possible unstable systems is proposed. A delay-dependent time varying stability condition is expressed in terms of LMIs. Stability and robustness is proved.

The Second String Quartet by Arnold Schoenberg, written in 1907 and 1908, is breaking musical traditions at least twice – (1) by leaving tonality, (2) by breaking the genre of string quartet, adding a voice who is interpreting two poems by the German symbolist Stefan George in its third and forth movements. In this paper, I want to raise the question about the reasons why Schoenberg might have add

This paper addresses the problem of adaptively controlling a plant with unknown parameters using communication-limited feedback. Assuming known dynamics, expressions have recently been obtained for the minimum average feedback data rate required for asymptotic stabilisability. The main purpose of this work is to demonstrate that this minimum rate does not increase if the plant parameters are unkno

Report on the deserted medieval chapel of Kabusa in Scania, Sweden. The report is part of a never fullfiled plan of publishing short building archaeological reports on all the medieval churches of the two counties Ljunits and Herrestad at Ystad in Scania as part. The investigation was conducted as a part of the research project "The Cultural Landscape during 6000 years in Southern Sweden", also ca

In this paper, we study a flexible routing strategy for demand protection and a corresponding optimization problem for networks that permanently experience fluctuations of the capacity available on their links. This is an important and novel topic as limited link availability is a fundamental feature of wireless networks; yet majority of work in survivable network design is restricted to total fai