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Five years on from its adoption in 1997 by the Object Management Group (OMG), the Uni?ed Modeling Language is the de facto standard for creating - agrammatic models of software systems. More than 100 books have been written about UML, and it is taught to students throughout the world. The de?nition of UML version 2 is well under way, and should be largely completed within the year. This will not only improve and enhance UML itself, including standard facilities for diagram interchange, but also make it fully integrated with other modeling technologies from the OMG, such as Meta-Object...

Written by foremost experts in the field, Engineering Modeling Languages provides end-to-end coverage of the engineering of modeling languages to turn domain knowledge into tools.

The book provides a definition of different kinds of modeling languages, their instrumentation with tools such as editors, interpreters and generators, the integration of multiple modeling languages to achieve a system view, and the validation of both models and tools. Industrial case studies, across a range of application domains, are included to attest to the benefits offered by the different...

Although the term "natural disaster" applies to the December 2004 tsunami, the images of huge devastation that were televised after the tragedy probably seemed a good deal less "natural" to us than those of starving African children we saw seven months later, from Niger. The tsunami was perceived as so "un-natural" that it provoked an immediate, unprecedented international outpouring of sympathy. It took many months, by contrast, for the story of a new famine in the Sahel to make headlines. From the outset its causes were apparent in media coverage-droughts and locust invasions have always...