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Biologists have identified 25 areas, called biodiversity hotspots, that are especially rich in endemic species and particularly threatened by human activities. The human population dynamics of these areas, however, are not well quantified. Here we report estimates of key demographic variables for each hotspot, and for three extensive tropical forest areas… (More)
Object-oriented solutions are becoming an established paradigm for writing robust, reusable software. Many object-oriented languages have begun to appear. This paper examines how the special object-oriented concepts might be implemented in a compiler using the also well-established tool of attribute grammars.