Part I Data Storage and Access Overview: Data Storage and Access Heiner Stuckenschmidt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 1 An RDF Query and Transformation Language Jeen Broekstra, Arjohn Kampman . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2 RDF and Traditional Query Architectures Richard Vdovjak, Geert-Jan...

This paper introduces a model making use of the security proposals based on Web Services architecture that aims to provide guarantees authentication and authorization transfer among different security domains. The model describes a flexible, scalable and secure way to establish trust relationships among Virtual Organization partners and to assign the access rights or roles to each partner in th...

The characterization and assessment of the social capital of a collaborative network is an important element to help promoting the success of collaboration. The development of indicators of social capital can help enterprise managers not only to analyze and measure their social capital but also to support the decision-making processes. However, models and mechanisms to measure the social capita...

We have designed and implemented a software tool coFinder – a collaboration opportunity finder aimed at facilitating the work of an opportunity broker in Collaborative Networked Organizations. It crawls the web to find potential collaboration opportunities (calls for tenders) and compares them with the actual competencies of companies from a Virtual organization Breeding Environment (VBE). The ...

In Germany’s D-Grid project numerous Grid communities are working together to providing a common overarching Grid infrastructure. The major aims of D-Grid are the integration of existing Grid deployments and their interoperability. The challenge in this endeavor lies in the heterogeneity of the current implementations: Three Grid middleware stacks and different Virtual Organization management a...

Mobile agent has developed for decade, and widely implemented in distribute computation. However, traditional mobile agents including strongmigration and weak-migration mobile agents still have some weakness. With the fabric of Grid virtual organization architecture, the mobile agent has gain great advantage comparing to those old mobile agents system. In this paper, a novel formalized mobile a...

A Virtual Organization (VO) is a dynamic collection of distributed resources that are shared by a dynamic collection of users from one or more physical organizations. As Grid Computing technology is starting to facilitate truly large-scale VOs, issues are being raised regarding the purpose, architecture and operational mechanism of the VO. The emerging approach is essentially to define the VO a...

Resources in virtual organizations are classified based on their local taxonomies. However, heterogeneity between these taxonomies is a serious problem for efficient cooperation processes (e.g., knowledge sharing and querying-based interactions). In order to overcome this problem, we propose a novel framework based on aligning the taxonomies of virtual organizations. Thereby, the best mapping b...

With time, an increasing number of organizations deploy global virtual teams (GVTs) in an effort to respond to the demands and the competitive nature of the global business arena. Leadership, a factor that is arguably central to the successful functioning of collocated teams, is much altered in view of the virtual backdrop, and thus, management practices, when referring to GVTs’ operation and e...

Computer design of processes and materials which have become nowadays indispensable for several technological and environmental advances are often based on the calculation of the efficiency of chemical reactions. The possibility of offering as a Service on the Grid the calculation of the reactive properties of the intervening elementary processes is of paramount importance. To cope with this de...