Grid computing enables the sharing of heterogeneous resources within virtual organizations. Since entities in virtual organizations are independently administrated, cross-domain management of access control and intrusion protection is critical for grid services. To provide better protection in grid systems, multiple domains collaborate in making security decisions. Unfortunately, the absence of...

Grid operations rely on monitoring services fed by a multitude of sources. These services provide relevant information about the status of the resources and the quality of the services in the infrastructure. In a Grid, they must disseminate this information across multiple administrative domains and heterogeneous technical platforms to users organized in different virtual organizations. In orde...

A grid virtual enterprise is a community of independent enterprises concerned with a particular sector of the economy. Its members (nodes) are small or medium size enterprises (SME) engaged in bilateral transactions. An important principle of a grid virtual enterprise is the lack of any global “guiding force”, with each member of the community making its own independent decisions. In this paper...

Diagnostic surgical pathology or tissue–based diagnosis still remains the most reliable and specific diagnostic medical procedure. The development of whole slide scanners permits the creation of virtual slides and to work on so-called virtual microscopes. In addition to interactive work on virtual slides approaches have been reported that introduce automated virtual microscopy, which is compose...

DynaSOAr is an infrastructure for dynamically deploying web services over a Grid or a set of networked resources. The DynaSOAr view of grid computing focussed entirely on the concept of services, rather than the more traditional jobs. Services are deployed on demand to meet the changing performance requirements. DynaSOAr includes the support to deploy services in pre-built Virtual Machines on d...

In Vocational and Educational Training (VET), new trends are toward social learning and, more precisely, toward informal learning. In such settings, this article introduces a process — the e-Qualification — to manage informal learning on the ELeGI “Learning Grid Infrastructure.” It argues that this process must occur in a social context, such as virtual communities. On the one hand, it describe...

The future interconnection environment will be a platform-independent Virtual Grid consisting of requirements, roles and resources. With machine-understandable semantics, a resource can actively and dynamically cluster relevant resources to provide on-demand services by understanding requirements and functions each other. Versatile resources are encapsulated to provide services in the form of s...