in geographically disperse organizations and constitute the system content. The user may invoke on-line computations of scientific datasets when the latter are not found into the system. Thus, ARION provides the basic infrastructure for accessing and deriving scientific information in an open, distributed

Abstract—Scheduling stochastic workloads is a difficult task. In order to design efficient scheduling algorithms for such workloads, it is required to have a good in-depth knowledge of basic random scheduling strategies. This paper analyzes the distribution of sequential jobs and the system

. The Knowledge Grid is a high-level system for providing Grid-based knowledge discovery services. These services allow professionals and scientists to create and manage complex knowledge discovery applications composed as workflows that integrate data sets and mining tools provided as distributed services on a

. An important challenge for geospatial information mining is the distributed nature of the data. MOSE ̀ provides knowledge discovery services based on the WEKA data mining library and novel distributed data mining algorithms for spatial data anal-ysis. A P2P bio-inspired algorithm for distributed spatial

. The Knowledge Grid is an high-level system for providing Grid-based knowledge discovery services. These services allow professionals and scientists to create and manage complex knowledge discovery applications composed as workflows that integrate data sets and mining tools provided as distributed services on a

systems to “glue ” different grid technologies together. Third-generation grids originated in the early millennium when Web technology was combined with second-generation grids. As a result, the 2 invisible grid, in which grid complexity is fully hidden through resource virtualization, started receiving

The ability to efficiently discover information using partial knowledge (for example keywords, attributes or ranges) is important in large, decentralized, resource sharing distributed environments such as computational Grids and Peer-to-Peer (P2P) storage and retrieval systems. This paper presents

, in uenced by their speci c experience. There is another layer that is folded in production/consumption, experience, power, and culture. This is technology. By technology I mean 'the use of scienti c knowledge to specify ways of doing things in a reproducible manner'. Technology is embodied

; data management; • programming models; • system architecture; • Grid information, resource and workflow monitoring services;

in defining the boundaries of coping ranges -thresholds of relatively benign experience beyond which systems feel significant effects from change and/or variability in their environments. Section 2 uses a more formal representation of vulnerability to show how overall coping capacity might be judged