Currently there is no practical standard for grid middleware, most of the grid platforms are built by their own, and it’s not easy to interoperate these grid platforms. Information service is one of the key components of the service oriented grid system, and information service interoperation among heterogeneous grids is the first step towards grid interoperation. Existing grid interoperability...

This article discusses the use of Access Grid (AG)—a form of video teleconferencing delivered over computer networks—to perform fieldwork. Interviews and group discussions were conducted with students and criminal court judges at sites remote from the fieldworker. A concept of ‘‘engagement’’ was used to identify distinctive interactional features and provide a first insight into the AG as a fie...

In large-scale distributed virtual environments, simulated entities maintain a consistent virtual world by exchanging messages about their state information in a timely fashion. The problem of Interest Management (IM) or, as it sometimes appears in the literature, Data Distribution Management (DDM), is the problem of delivering to each entity only the data updates that it absolutely requires to...

With the proliferation of Quad/Multi-core micro-processors in mainstream platforms such as desktops and workstations; a large number of unused CPU cycles can be utilized for running virtual machines (VMs) as dynamic nodes in distributed environments. Grid services and its service oriented business broker now termed cloud computing could deploy image based virtualization platforms enabling agent...

Grid is the collection of heterogeneous resources, providing good opportunities for the users of virtual organizations forming a Grid for coordinated resource sharing and problem sharing. Much Grid middleware software exists for implementing a Grid framework. Apart from many application areas of Grid Computing, Geographic Information System has been an emerging application area for Grid Technol...

Data grid applications require often an access to infrastructures with high performance data movement facilities coordinated with computational resources. Other applications need interconnections of large scale instruments with HPC platforms. In these context, dynamic provisioning of customized computing and networking infrastructure as well as resource virtualization are appealing technologies...

interdomain security assertions: A basis for extra-grid virtual organizations

The reorganization of the supply chain in the aerospace industry has led to a new situation for small and medium-sized enterprises (SME). The suppliers are forced to deliver completed systems instead of components and assemblies. In order to react to the changed requirements, one possible solution is the project-oriented and temporary cooperation of SME by building a Virtual Organization in ord...

SymposiumPlanner-2011 is the newest in a series of Rule Responder instantiations for the Questions&Answers (Q&A) sections of the o cial websites of the RuleML Symposia. It supports committee members via personal agents based on member-encoded rule knowledge. The personal agents are invoked by an organizational agent which selects them using a responsibility assignment matrix. This paper describ...

CEMEX developed a Virtual Work Model (VWM) to facilitate the execution of its acquisition-based strategy, when working in geographically dispersed teams using different time zones. The objective of our research case study is to prove the benefits of this virtual work model in CEMEX, particularly applied to the management of business knowledge for the successful integration of the acquired compa...