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An overview on Schlieren optics and its applications
(2012)This work provides a short overview on the dierent schlieren visualisation methods. The introduction contains a brief explanation of the working principles followed by the historical development of the technique. After a sum-up of the physical theory behind schlieren image, the most important Setups designs are compared and discussed. In context with the research of PhD Student Dirk M oller at the IMES institute of ETH Z urich, the focus ...Working Paper -
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What determines international and inter-sectoral knowledge flows? The impact of absorptive capacity, technological distance and spillovers
(2016)KOF Working PapersThis paper studies determinants of knowledge flows as measured with patent forward citations that occur between 'input' and 'output sector-countries'. We look at the impact of absorptive capacity of a focal sector-country, knowledge spillovers and technological distance between sector-countries on further knowledge flows. For this purpose, we develop a knowledge flow matrix similar to input-output tables in trade where patent citations ...Working Paper -
Efficient Data-parallel Computing on Small Heterogeneous Clusters
(2012)Technical report / ETH Zurich, Department of Computer Science, Systems GroupCluster-based data-parallel frameworks such as MapReduce, Hadoop, and Dryad are increasingly popular for a large class of compute-intensive tasks. Such systems are designed for large-scale clusters, and employ several techniques to decrease the run time of jobs in the presence of failures, slow machines, and other effects. In this paper, we apply Dryad to smaller-scale, “ad-hoc” clusters such as those formed by aggregating the servers and ...Report -
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CIP resilience and risk management in critical infrastructure protection policy
(2011)3RG ReportReport -
Smart transparency for illustrative visualization of complex flow surfaces
(2011)Technical report / Systems Group, Department of Computer Science, ETH ZurichReport -
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