Versions

Using Versions in Gis Using Versions in Gis

Geographic information systems gis have become important tools in public planning activities (e.g, in environmental or utility management). This type of activity requires the creation and management of alternative scenarios, as well as analysis of temporal data evolution. Existing systems provide limited support for these operations, and appropriate tools are yet to be developed. This paper pre...

Integrity Constraints and Versions

In this paper, the extension of integrity constraint mechanisms in order to maintain consistency in multiversion databases is studied. Unlike monoversion databases, a multiversion database represents several states of the modeled universe. Thus, both the notion of consistency and the means to maintain it have to be extended. This goal requires studying new integrity constraints induced by versi...

Two Versions of Millianism

Versions of Vygotsky

The current prominent influence of the theories of L. S. Vygotsky on studies of education, particularly of pedagogic practice, requires a re-examination. The dominance of deficient editions of his writings has had regrettable consequences such as a misplaced reading of the ‘zone of proximal development’. The publication of his recent, albeit incomplete, Collected Works in English affords an opp...

Versions of vesalius.

Andreas Vesalius reformed anatomical knowledge and teaching in the Renaissance by adopting Galenic methods from the classical past. His careful drawings revealed the human body in unprecedented and realistic detail, but the images of himself were more ambiguous.