Overallocation in a virtual circuit computer network

résum

Building an XML document warehouse

International audienceData Warehouses and OLAP (On Line Analytical Processing) technologies are dedicated to analyzing structured data issued from organizations' OLTP (On Line Transaction Processing) systems. Furthermore, in order to enhance their decision support systems, these organizations need to explore XML (eXtensible Markup Language) documents as an additional and important source of unstructured data. In this context, this paper addresses the warehousing of document-centric XML documents. More specifically, we propose a two-method approach to build Document Warehouse conceptual schemas. The first method is for the unification of XML document structures; it aims to elaborate a global and generic view for a set of XML documents belonging to the same domain. The second method is for designing multidimensional galaxy schemas for Document Warehouses

Recent experimental probes of shear banding

Recent experimental techniques used to investigate shear banding are reviewed. After recalling the rheological signature of shear-banded flows, we summarize the various tools for measuring locally the microstructure and the velocity field under shear. Local velocity measurements using dynamic light scattering and ultrasound are emphasized. A few results are extracted from current works to illustrate open questions and directions for future research.Comment: Review paper, 23 pages, 11 figures, 204 reference

Méthode de référence pour le contrôle du polyéthylène téréphtalate utilisé dans le conditionnement des eaux de boisson

Le polyéthylène téréphtalate (PET) utilisé comme matériau de conditionnement des eaux de boisson peut générer de l'acétaldéhyde par dégradation thermique au cours de sa fabrication. Sa teneur dans le matériau doit être mesurée avec fiabilité. A cet effet, une méthode de dosage de l'acétaldéhyde dans le PET a été élaborée et testée avec l'aide des industriels concernés dans le but de constituer une méthode de référence