With the complexity of applications, researchers need more resources to resolve their computation. It is very important to provide the general interface to access the distributed resources. Grid environment is distributed, heterogeneous and dynamics, so integration of different native platform is a challenge. We present a service-oriented Grid Portal building on concepts and technologies from O...

Compared with Computational Grid, the Information Grid currently has no clearly definition. In terminology of the Shanghai Information Grid, to meet the requirement of Information Grid, we design a QoS-aware Information Service which can provide efficient search ability and reliable Index Service and the Information Grid Portal which acts as an access point to Information

We take a broad view that ultimately Gridor Web-services must be located via personalised, semantic-rich discovery processes. We argue that such processes must rely on the storage of arbitrary metadata about services that originates from both service providers and service users. Examples of such metadata are reliability metrics, quality of service data, or semantic service description markup. T...

The past few years have seen the Grid is evolving as a service-oriented computing infrastructure. It is envisioned that various resources in a future Grid environment will be exposed as services. Service discovery becomes an issue of vital importance for utilising Grid facilities. This paper presents RSSM, a Rough Sets based service matchmaking algorithm for service discovery that can deal with...

Grid computing provides a robust paradigm for aggregating disparate resources in a secure and controlled environment. The emerging grid infrastructure gives rise to a class of scientific applications and services in support of collaborative and distributed resource-sharing requirements, as part of teleimmersion, visualization and simulation services. Because such applications operate in a colla...

Though research on the Grid Services has progressed at a steady pace, its promise has yet to be realized. One major difficulty is that, by its very nature, the Grid Service is a large, uncensored system to which anyone may contribute. This raises the question of how much credence to give each source. The concept and definition of trustworthy of Grid Service is given. Estimating trustworthy of G...

Service discovery is a key concept in a distributed Grid environment. The first step towards Grid implement is the discovery of services. In this paper, we build a new Grid service matching graph based on the semantic similarity of function parameters and then an efficient search algorithm is presented to accomplish Grid service discovery. The experiment results show the algorithm proposed in t...

OBJECTIVES The European GEMSS Project is concerned with the creation of medical Grid service prototypes and their evaluation in a secure service-oriented infrastructure for distributed on demand/supercomputing. Key aspects of the GEMSS Grid middleware include negotiable QoS support for time-critical service provision, flexible support for business models, and security at all levels in order to ...

Grid technologies enable large-scale sharing of computing resources and make them open to formal or informal consortia of individuals, who utilize these computing resources by means of consuming Grid Services. In such context, a more mature mechanism of Grid Service management, not only on the creation and destruction of Grid Service instances but also on the whole lifecycle of Grid Services, i...

OGSA-DQP is a distributed query processor exposed to users as an OGSA-compliant Grid service. This service supports the compilation and evaluation of queries that combine data obtained from multiple services on the Grid, including Grid Database Services (GDSs) provided by OGSA-DAI project. Not only does OGSA-DQP support integrated access to multiple Grid services, it is itself implemented as a ...