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In the area of re-engineering or re-purposing of existing software, model driven methodologies are hard to adopt because of lack of the central asset: models for the existing source code. Large companies and organizations that maintain a large code basis over long periods of time have recognized this issue, and are looking for ways to turn that code basis into models understandable under a business...
Model driven analysis and design are increasingly recognized as powerful methodologies for software development and evolution. Model driven approaches in particular can be also combined with formal methods, offering advantages for verification, analysis, and testing. In order to use model driven methods for re-designing existing software, however, one needs additional facilities to transform the existing...
An overview about recent research in distributed, co-operative or WWW-based software involving visualization components reveals a variety of approaches ranging from remote simulation over computer supported co-operative engineering to service engines on the web. Visualization plays a key role in improving the communication of concepts or data contents. Tight coupling of visualization software with...
The detection of vortical phenomena in vector data is one of the key issues in many technical applications, in particular in flow visualization. Many existing approaches rely on purely local evaluation of the vector data. In order to overcome the limits of a local approach, we choose to combine a local method with a correlation of a pre-defined generic vortex with the data in a medium-scale region...
Vortices are important features in many research and engineering fields. Visualization is an important step in gaining more understanding and control of vortices. Vortex detection criteria fall into two categories: point based scalar quantities, calculated at single points, and curve based geometric criteria, calculated for, e.g., streamlines. The first category is easy to compute, but does not work...
Comparative visualization has successfully been applied to a variety of fluid dynamic problems. Most applications rely on image level comparison such as experimental flow visualization versus computational flow imagery (CFI) which tries to simulate optical image acquisition in flow testing. When differences become difficult to distinguish or once a quantitative result is required, data level comparison...
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