Collagen: Building Nature’s Infrastructure

Building Spatial Knowledge Infrastructure

The author in the first part would like to share his experiences of a European Union sponsored LEONARDO da VINCI project – Land Information Management for Executives (LIME) co-ordinated by the College of Geoinformatics, University of West Hungary (GEO). The LIME outcomes were a knowledge resource centre and an Internet-supported distributed education service for the Hungarian Land Administratio...

Building a Modular Authorization Infrastructure

Authorization infrastructures manage privileges and render access control decisions, allowing applications to adjust their behavior according to the privileges allocated to users. This paper describes the PERMIS role based authorization infrastructure along with its conceptual authorisation, access control, and trust models. PERMIS has the novel concept of a credential validation service, which...

The Natures of Nonconfigurationality

Population, development, and human natures

At the dawn of this new millennium, the human enterprise is quickly becoming a globally unified one. Yet numerous obstacles and pitfalls remain in the path of a full and fair unification. A substantial fraction of the world’s population is well-off and increasingly connected through trade and communications systems. But an even larger fraction is struggling to make ends meet and is only sketchi...

Natures and Perspectives

“Nature” and “Perspective” have similar meaning for Eclipse developers and for personnel in a software product line organization. The nature of product line work differs from one part of the organization to another. A developer using Eclipse switches among perspectives to have ready access to the specific tools needed for the nature of the current work such as testing, modeling, or plug-in deve...