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Design starts with a cognitive model and ends with a solution worked out in a way that fits into the human context of meaning which is socially decided. The bridge between the cognitive model and the final system, or thing, is a proper description that has to be possible to socially communicate. The necessary description part leads to the understanding that design, like sciences, is a kind of lear
In the software industry, there is a strong shift from traditional phase-based development towards agile methods and practices. This paper reports on a case study aimed at investigating if, and how, agile Requirements Engineering (RE) can remedy the challenges of traditional RE, and what new challenges agile RE may pose. The results from an initial case study with 9 practitioners from a large soft
Nanosized soot particles are a serious health hazard in urban air. Upon inhalation they can penetrate deep into the lungs and their fat solubility makes possible their accumulation in other organs such as the brain. For this reason legislation has continuously reduced the allowable emission levels and raised requirements for reporting the status of the exhaust system (OBD, on board diagnostics) in
This paper presents the 1936 Spanish general elections as they were seen at the time by the Swedish Envoyé in Madrid and by the Swedish press. While there is plenty of Swedish historical research on Sweden’s role in the Spanish civil war, there are very few studies on the relationships between Sweden and the Spanish Republic before July 1936. Therefore, this study relies almost entirely on two gro
Popular Abstract in Swedish Stora förändringar har skett i jordbrukslandskapet under det senaste drygt halva århundradet. Ett allt intensivare jordbruk med krav på större skördar för att möta en allt större efterfrågan på livsmedel har satt sina spår. För att klara de högre kraven, men också som en följd av den teknologiska utvecklingen, så har jordbruket rationaliserats. Landskapet har strukturerAgricultural intensification has caused severe declines among biodiversity in European farmland over the last half century. The transformation of the agricultural landscape has led to reduced availability of key resources such as food, nesting habitat and shelter. In this thesis I have investigated a way of ameliorating the negative effects of agricultural intensification, through the creation of
Recent empirical studies confirm a positive relationship between trade liberalization or trade openness and the quality of domestic economic institutions. An isolated analysis of trade openness per se, however, may grossly simplify the mechanisms at work, as the linkage between open trade and quality of economic institutions is likely to vary for different political regimes. This study examines th
Single word stimuli from twelve female and twelve male natural speakers of various ages and from two synthetic voices were acoustically analyzed for duration and F0. Listening experiments were carried out to test if spectral features or F0 and duration provide the more dominant age cues and to test if listeners are equally good at estimating the age of female and male speakers. Results of the list
Popular Abstract in Swedish Från 1865 och framåt öppnades i nordöstra U.S.A ett antal college där unga kvinnor kunde avlägga en icke yrkesinriktad akademisk examen. Efter några decennier använde några som utexaminerats från dessa institutioner sina erfarenheter i populära berättelser om studenter på college. Avhandlingen visar hur denna utbildning presenteras i skönlitterär form. Fokus ligger på Twenty years after Vassar College welcomed the first American female undergraduates in 1865, the experiences of women college students began to be fictionalized in so-called college stories. This thesis shows how higher education is presented in the novels, collections of short stories, and serialized stories for female readers published before the United States was involved in the First World Wa
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Popular Abstract in Swedish The overall interest pursued in this thesis is how the former socialist economies of Central and Eastern Europe can build strong and dynamic systems of innovation. The purpose of the thesis is to investigate the dynamics and evolution of the telecommunications system of innovation in Estonia from the late Soviet period to Estonia's EU accession, and to provide an in-depThe overall interest pursued in this thesis is how the former socialist economies of Central and Eastern Europe can build strong and dynamic systems of innovation. The purpose of the thesis is to investigate the dynamics and evolution of the telecommunications system of innovation in Estonia from the late Soviet period to Estonia's EU accession, and to provide an in-depth explanation of how innova
An anthology of letters from church fathers and their Christian contemporaries, third to sixth centuries. Translated in full from the original Latin and Greek into Swedish.
In this paper zero voltage switching converters are investigated. The investigation starts by discussing the RCD charge-discharge snubber. The concept of resonant and quasi-resonant DC link converters is discussed. One of the most promising quasi-resonant DC links reported in the literature is implemented and tested in a battery charger application. Simulated resonant link voltage and current wave
The concept of vandalism is analyzed as a symbolic act. An analysis of vandalism from a situational-positivistic, or a motivational-psychological, approach hardly gives an understanding of vandalism as a meaningful individual and social act. A humanistic and cultural perspective can supply ways to understand a nonprescribed behavior such as vandalism. The original meaning of vandalism is plunderin
