In market-driven software development it is crucial to produce the best product as quickly as possible in order to reach customer satisfaction. Requirements arrive at a high rate and the main focus tends to be on the functional requirements. The functional requirements are important, but their usefulness relies on their usability, which may be a rewarding competitive means on its own. Existing met

A particle filter based solution to the out-of-sequence measurement (OOSM) problem is proposed. The solution is storage efficient, while being computationally fast. The filter approaches the multi-OOSM problem by not only updating the estimate at the most recent time, but also for all times between the OOSM time and the most recent time. This is done by exploiting the complete in-sequence informat

Previous depth buffer compression schemes are tuned for compressing depths values generated when rasterizing static triangles. They provide generous bandwidth usage savings, and are of great importance to graphics processors. However, stochastic rasterization for motion blur and depth of field is becoming a reality even for real-time graphics, and previous depth buffer compression algorithms fail

A method is described for production of time series of atmospherically distorted wavefronts following Kolmogorov statistics. The method uses Taylor's hypothesis (`frozen turbulence') to generate the temporal development of the aberrations caused by an atmospheric turbulence layer. An arbitrary number of turbulence layers can be used to generate the final wavefront.

In this paper we introduce a new coding scheme - so-called laminated turbo codes. It is characterized by a block-convolutional structure that enables us to combine the advantages of a convolutional encoder memory and a block-oriented decoding method. We show that this block-convolutional structure is superior in terms of its error correction capability compared to the pure block structure of the c

Our abilitiy to estimate speaker age was investigated with respect to stimulus duration and type as well as speaker gender in four listening tests with the same 24 speakers, but with four different types of stimuli (ten and three seconds of spontaneous speech, one isolated word and six concatenated isolated words). Results showed that the listeners' judgements were about twice as accurate as chanc

At the end of the 1980s, a tri-polar world comprising the US, EU and Japan emerged. However, the economic turbulence of the early 21st century has destabilized this order, and the rise of other Asian powers has implications for the formation of a new economic configuration. This book discusses the probability of the different tentative global economic power balances to emerge, as well as the diff

The European project has come a long way in establishing peace, creating a common market, and expanding its borders. At the same time, diminishing popular legitimacy has spurred talk about a European Union in crisis. How far has the EU really come in fulfilling its grand visions? Is the project barely half-way? Or could we say with some confidence that European integration is solidified and will c

Popular Abstract in Swedish Sjöfåglar påverkar undervattensväxter Liksom korna på betesmarken betar och påverkar växter på olika sätt, kan växtätande sjöfåglar påverka växter i sjöar. Svanar, sothönor och änder äter ofta undervattensväxter och jag har undersökt hur växterna påverka's av detta. Fågelsjöar är ofta näringsrika grunda sjöar, där växtproduktionen dominera's av undervattensväxter. OliSubmerged macrophytes are thought to stabilize clear-water states of shallow lakes. The aim of this thesis was to elucidate how waterfowl herbivory can affect abundance, distribution and species composition of submerged macrophytes in eutrophic lakes. I found that in a lake with sparse vegetation, which was in a colonization phase, small plants were uprooted and large plants were heavily grazed up

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