The creation process of adaptive hypermedia is rarely evaluated. Moreover, conversion between different adaptive hypermedia systems has barely been proposed, yet alone tested in realistic settings. This paper presents the evaluation of the interoperability of two adaptive (educational) hypermedia systems, MOT and WHURLE, the one serving as authoring system, and the other as delivery system. The...

Storage media such as digital optical disks, PROMS, or paper tape consist of a number of "write-once" bit positions (wits); each wit initially contains a "0" that may later be irreversibly overwritten with a "1." It is demonstrated that such "write-once memories" (woms) can be "rewritten" to a surprising degree. For example, only 3 wits suffice to represent any 2-bit value in a way that can lat...

L’Intelligence Economique (ou Competitive Intelligence) est une démarche et un processus organisationnel qui permet à l’entreprise d’être plus compétitive, d’une part en surveillant l’environnement et ses changements, et d’autre part, en surveillant les changements internes. Les graphes sont parmi les outils les plus puissants de visualisation. Ils permettent d’afficher, tout type d’information...