Juha Koskela

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Mobile phones have been closed environments until recent years. The change brought by open platform technologies such as the Symbian operating system and Java technologies has opened up a significant business opportunity for anyone to develop application software such as games for mobile terminals. However, developing mobile applications is currently a(More)
Extreme programming (XP) is a well known agile software development method. While a number of experience reports have been published in recent years, agile software development in general and XP in particular have strongly been criticized for the lack of empirical data. This paper reports a survey of the empirical data obtained from a controlled case study(More)
Extreme programming (XP), similar to other agile software development methods, values close collaboration with customers. One of the XP's practices suggests that customer should be 100% available for the development team. Anecdotal evidence suggests that the XP customer role is costly, difficult and demanding. However, very few empirical studies have been(More)
While Extreme programming (XP) relies on certain principles, it requires an extensive set of tools to enable an effective execution of its practices. In many companies, putting stories on the board may not be sufficient for managing rapidly changing requirements. The objective of this paper is to report the results from a study where a requirement(More)
The aquaculture industry is increasingly replacing fishmeal in feeds for carnivorous fish with soybean meal (SBM). This diet change presents a potential for genotype-environment (G x E) interactions. We tested whether current salmonid breeding programmes that evaluate and select within fishmeal diets also improve growth and efficiency on potential future(More)
The European Union’s growth strategy (Europe 2020) requires reductions in greenhouse gas (GHG) emissions and increases in both renewable energy sources and energy efficiency. Short rotation forestry (SRF) has achieved greater awareness due to these targets. Short rotations (1–12 years), rapid growth and the ability to coppice are typical for SRF. Salix,(More)
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