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Long-lived flow patterns in the atmosphere such as weather fronts, mid-latitude blockings or tropical cyclones often induce extreme weather conditions. As a consequence, their description, detection, and tracking has received increasing attention in recent years. Similar objectives also arise in diverse fields such as turbulence and combustion research, image analysis, and medical diagnostics under the headlines of "feature tracking", "coherent structure detection" or "image registration" - to name just a few. A host of different approaches to addressing the underlying, often very similar, tasks have been developed and successfully used. Here, several typical examples of such approaches are summarized, further developed and applied to meteorological data sets. Common abstract operational steps form the basis for a unifying framework for the specification of "persistent structures" involving the definition of the physical state of a system, the features of interest, and means of measuring their persistence.
Scientific visualization is a rapidly growing research field with a need for information dissemination. This report describes the Electronic Visualization Library (EVlib), a digital library for scientific visualization. Main design goals of EVlib were an attractive user interface providing various kind of access mechanisms as well as an open interface to other already established information systems. EVlib stores fulltext versions of documents where they are available. We also provide access to BibTeX entries for every stored document. All available BibTeX entries are combined in BibTeX bibliographies which are registered with the ``Collection of Computer Science Bibliographies'' at University of Karlsruhe. Additionally, we have defined a mapping from BibTeX attributes to the Dublin Core attribute set. This mapping is used to provide a gatherer interface for the Harvest information system. This way, existing Harvest installations can immediately use EVlib as an information resource.
Dieser Report beschreibt ein Konzept zur einheitlichen Bereitstellung von Software in heterogenen Umgebungen. Software kann so kooperativ durch mehrere Beteiligten (z. B. auch über Institutsgrenzen hinweg) angeboten und genutzt werden. Die Konzepte stammen ursprünglich vom Rechenzentrum der Universität Stuttgart (RUS) und wurden im Rahmen eines vom Verein zur Förderung eines Deutschen Forschungsnetzes (DFN) mit Mitteln des BMBF geförderten Projekts zur Berliner Software Distribution (BeSD) weiterentwickelt.