Search for dissertations about: "David Ek"
Found 4 swedish dissertations containing the words David Ek.
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1. Approaches to accelerate methods for solving systems of equations arising in nonlinear optimization
Abstract : Methods for solving nonlinear optimization problems typically involve solving systems of equations. This thesis concerns approaches for accelerating some of those methods. In our setting, accelerating involves finding a trade-off between the computational cost of an iteration and the quality of the computed search direction. READ MORE
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2. Hunting Hydrogen : Structure-property relations in High Entropy Alloy-based metal hydrides
Abstract : Metal hydrides have many uses when switching the energy system from fossil fuels to renewable sources, such as rechargeable batteries, hydrogen storage, hydrogen compression and thermal storage. State of the art materials for these applications such as LaNi5 and TiFe, however, suffer certain limitations such as degradation during repeated hydrogen cycling and harsh activation conditions for initial hydrogen uptake, promoting the need for novel materials. READ MORE
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3. Managing Digital Open Innovation with User Communities : A Study of Community Sensing and Product Openness Capabilities in the Video Game Industry
Abstract : Digital and open innovation has changed how product innovation occur and how it is managed by firms. Digital technology as an enabler of increasingly distributed innovation processes has in particular impacted firms’ abilities to draw on, and leverage, large numbers of external users and user communities to develop their offerings. READ MORE
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4. Visions of Apostolic Mission : Scandinavian Pentecostal Mission to 1935
Abstract : Using methods of Cultural Mapping, Scandinavian Pentecostal publications and archival sources were examined regarding mission. Working toward “Apostolic Mission,” in addition to biblical texts Pentecostals used models adapted from the Pietist, Methodist, Baptist and especially the Holiness Revivals. READ MORE