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Vertex and edge isoperimetric constants of graphs are studied. Using a functional-analytic approach, the growth properties, under products , of these constants is analyzed.
Executive summary This paper offers a view on a new concept and approaches of making e-learning more efficient by shifting from the (text)book paradigm to a new digital content structure and integrating learning process management elements into the content workflow thus improving the efficiency of the e-learning process. This way the resulting content… (More)
The paper describes the concept and the work on developing an integrated digital environment for dataflow processing and management for the purpose of medical learning/education. On the basis of converting the learning materials into a unified digital form a better effectiveness is achieved in processing, storage, retrieving, distribution and visualization… (More)