Grid computing systems provide a vast amount of computing resources from multiple
administrative domains to reach a main objective. One of the most important challenges in …

This paper presents the security architecture of the sixth version of the UNICORE grid
middleware. The sixth iteration of UNICORE introduced a number of new, security-related …

This paper describes a conceptual model for attribute aggregation that allows a service
provider (SP) to authorise a user's access request based on attributes asserted by multiple …

In this paper we present a novel Virtual Organizations management system called UVOS,
developed within the Chemomentum project. It is a complete and production ready solution …

Coordinated problem solving and secure resource sharing in dynamic ensembles of
organizations is critically dependent on the concept of virtual organizations (VO). However …

Sažetak Modeling the fulfillment of global properties like survivability is a challenging
problem in unbounded systems such as Grids, peer-to-peer systems, or swarms. This paper …

Most climate and climate impact studies include data analyses and therefore rely on
scientific data. Generally, only a small part out of the whole available data of an experiment …

In this paper we report results of the ongoing effort to provide a seamless authorization for
the UNICORE and Globus Toolkit middlewares using the UNICORE Virtual Organizations …

Zusammenfassung Das Grid Computing hat sich inzwischen als Standard für
organisationsübergreifendes wissenschaftliches Arbeiten mit IT-Infrastrukturen etabliert. Das …

E-science communities have put tremendous efforts into providing global access to their
distributed scientific data sets to foster data and knowledge sharing. Beyond already existing …