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

Power consumption in clock of large high performance VLSIs can be reduced by adopting Globally Asynchronous, Locally Synchronous design style (GALS). GALS has small overheads for the global asynchronous communication and local clock generation. We propose methods to a) evaluate the benefits of GALS and account for its overheads, which can be used as the basis for partitioning the system into optim

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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

The first part of this paper discusses how Jesus is presented as a leader in the call narratives in the Gospel of Matthew (4.18–22). By making use of a biographical-narrative reading of Matthew, which takes the biographical genre seriously and pays attention to the narrative development of the story, and modern understanding of leadership, mainly by making use of transformational leadership theori

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.

Based on an ethnographic study among selected ethnic minority groups in Kon Tum province of the Central Highlands of Vietnam, this paper discusses how popular discourses about social-cultural differences between the ‘civilized’ lowland majority Kinh people and ‘backward’ upland minority groups impact on political participation of the local people. Popular assumptions contend that ethnic minorities

Popular Abstract in Swedish Hantering av risker i företag och organisationer har haft en lång och komplicerad historia. På åttiotalet, och i början av nittiotalet, var uppfattningen att om en olycka inträffade i en organisation, som påstods vara nära nog perfekt, måste det bero på ”den mänskliga faktorn”, dvs. att en eller flera medarbetare inte gjorde som de borde ha gjort. Orsakerna till olyckaIntroduction Risk management in enterprises, organisations and companies has had a long and complicated history. During the eighties, and at least during the beginning of the nineties, the notion concerning risk management was that if an accident happened in an otherwise perfect system it was due to the human operator in some way being the cause of the error. The cause for the accidents was desc

The erection of roadside memorials in Sweden is commonly considered a novel practice, appearing during the last 10-15 years. Nevertheless similar precedent practices can be found in the history of Sweden. Stories about marking the site of an unexpected death with a cross could be said to date back to the eleventh century legend of Saint Sigfrid, telling of the first English missionary to spread C