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Capturing better data: The potential for better insight into user's requirements through iterative prototyping

This article aims at introducing to a wider circle a complementary research approach in user oriented work. Its most fundamental part is the use of technology as a tool for capturing the needs, wishes and dreams of a user. The incitement for us to start developing this method was an experience based, serious, questioning of conventional methods such as interviews, questionnaires, etc, and their c

Using Local Differential Operators to Model Dispersion in Dielectric Media

Dispersion of electromagnetic waves is usually described in terms of an integro-differential equation. In this paper we show that whenever a differential operator can be found that annihilates the susceptibility kernel of the medium, then dispersion can be modeled by a partial differential equation without nonlocal operators.

HEP Applications Evaluation of the EDG Testbed and Middleware

Workpackage 8 of the European Datagrid project was formed in January 2001 with representatives from the four LHC experiments, and with experiment independent people from five of the six main EDG partners. In September 2002 WP8 was strengthened by the addition of effort from BaBar and D0. The original mandate of WP8 was, following the definition of short- and long-term requirements, to port experim