Willem Vermeer

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A critical issue in understanding high speed flows is the study of shock waves. This paper summarizes our research on techniques for the detection and visualization of shock waves occuring in simulations of threedimensional flows on unstructured grids. Detection algorithms based on Mach number, density gradient and directional derivatives are compared using(More)
We discuss the applicability of schema integration techniques developed for tightly-coupled database interoperation to interoperation of databases stemming from diierent modelling contexts. We illustrate that in such an environment, it is typically quite diicult to infer the real-world semantics of remote classes from their deenition in remote databases.(More)
This paper presents a framework for reverse engineering of relational database applications. The target of such an eeort is the deenition of a fully equipped object-oriented view of the relational database, including methods and constraints. Such views can be seen as a full speciication of the database semantics, aiding in the identiication of semantic(More)
This paper presents techniques for reverse engineering of re-lational database applications. The target of such an eeort is the deeni-tion of a fully equipped object-oriented view of the relational database, including methods and constraints. Such views can be seen as a full speci-cation of the database semantics, aiding for example in the identiication of(More)
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