Software Configuration Management (SCM) is an important support activity in software development. However, its transparent nature as a service that makes life easier for others and as an insurance against disasters, often makes it difficult to justify investments in tools and processes that apparently do not have any direct return. We have made a first step towards establishing a model for showing

Popular Abstract in Swedish Graden av genetisk variation inom och mellan olika populationer bestäms av balansen mellan tre faktorer: naturligt urval, slumpmässig genetisk drift och genflöde. Genom studier av genetisk variation är det möjligt att dra slutsatser om t ex selektionstryck på olika alleler (genvarianter), arters spridningsvägar till nya platser, tid sedan etablering och graden av släktsIn this thesis I present studies concerning genomic diversity and genetic heterogeneity as well as the evolution and maintenance of genetic variation at a specific immune defence gene in Atlantic salmon (Salmo salar, L.). I here present data on nucleotide diversity showing that human activities as well as different post-glacial colonisation events have had considerable effects on the genomic diver

Extreme environments (high and low temperature, high and low pH, etc.) are inhabited by a vast and diverse flora of microorganisms, which are adapted to these environments (extremophiles). The enzymes produced by extremophiles are active under these harsh conditions and are thus applicable in processes, where conditions are outside the working range of enzymes originating from mesophiles. In this

Ultra-wideband (UWB) communication is a potential technique for future high-speed networks. In this paper, we investigate low complexity signal detection approaches for OFDM based UWB systems. In particular, we develop practical approaches for channel estimation and interference suppression. Computer simulation results show that these techniques can be effectively used in OFDM based UWB systems fo

Boken handlar om att fördjupa förståelsen av förändringsprocesser och problematisera den gängse bilden av förändring som något nödvändigt. Ett tekniskt perspektiv på förändring – hur man gör – är enligt oss otillräckligt. Centralt är också att förstå vad förändring betyder hos dem som engageras och vilken social dynamik – relationer och interaktioner – som präglar förändringsprocesser. Ambitionen

We consider the problem of admission control to an M/M/1 queue under periodic observations with average cost criterion. The admission controller receives the system state information every ø :th second and can accordingly adjust the acceptance probability for customers who arrive before the next state information update instance. For a period of ø seconds, the cost is a linear function of the time

In this theses I have focused on how the mechanisms of species interactions affect community structure. It is well known that certain species may have a particularly strong influence on the structure of a community. What is not fully understood is how to characterize these species that have such a strong impact on community structure. In my work, I have work tried to find out what makes such speci

In this paper we investigate MIMO systems where faster-than-Nyquist (FTN) signaling is used as modulation. On the AWGN channel, the main characteristic of FTN is the so called Mazo limit; it is possible to signal considerably faster than conventional without loss in minimum Euclidean distance. We show that MIMO-FTN systems inherit this property from the AWGN-FTN systems. Moreover, not only does it