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The paper shows how role-based access control (RBAC) models can be implemented in distributed object-based systems that follow OMG/ORB standards. The paper introduces a novel approach that provides for automatic role activation by the security components of the middleware, which brings role-based access control to security-unaware applications. Role-based access control has been being recognized as...
The cloud computing model is gaining interest in the scientific computing field after being well established and promoted in the non-academic world. Scientific data centers are starting to promote and deploy cloud services for their users, creating an heterogeneous ecosystem with different resource providers and different software stacks, that are neither designed nor adapted to interoperate or cooperate...
Semantic grid computing provides a shared computing environment with geographically distributed resources. These resources status changes dynamically and the type of applications to be executed also changes in time. In this paper, we proposed an adaptive mechanism in the semantic grid environment to reduce the efforts to configure and enact application workflows. Some applications were used to describe...
Short term and long term transactions will become very important for both personal and cooperative work involving workflows that use ontologies of the Semantic Web. We describe a way to get around the CAP theorem (the impossibility of simultaneous consistency, availability, and the possibility of network partitioning) and the worst-case infinite delay for any distributed decision-making.
Recently, Grid computing activities in Asia-Pacific have been drawn attention, includes in high learning education institutes in Malaysia. Many university and institute in Malaysia are started to build their campus grid infrastructure. One of the main problems that most institution faced when deploying campus grid is interconnectivity between cluster/grid sites. Thanks to EGEE gLite middleware project...
The Database Migration Tool (DBM Tool) is a Tool developed by using Language C++ & SQLAPI++ 3.5.7 as a middleware. Due to rapid growth of information technology many organizations are forced to transfer their technologies, by changing the database from one format into another. So organizations do need some tools to convert their databases into recent and reliable technology. This article is aimed...
Large scientific projects need collaborative data sharing environments. For projects like the Ocean Observations Initiative (OOI), the Temporal Dynamics of Learning Center (TDLC) and Large-scale Synoptic Survey Telescope (LSST) the amount of data collected will be on the order of Petabytes, stored across distributed heterogeneous resources under multiple administrative organizations. Policy-oriented...
e-science and e-research is about supporting collaborations especially those that cross administrative boundaries. Typically this is achieved through establishing virtual organizations (VOs) where several institutions and individuals wish to contribute resources for their mutual interest, e.g. to address a given research topic. VOs can be fluid in nature and any individual/cooperating entity may in...
The Mascot Robot System is developed as a part of the "Development Project for a Common Basis of Next-Generation Robots" sponsored by NEDO (New Energy and industrial technology Development Organization) that is Japan's largest public R&D management organization for promoting the development of advanced industrial, environmental, new energy and energy conservation technologies. The Speech...
A spatial data access control model in grid environment was proposed base on Globus Security Infrastructure (GSI). Firstly, A spatial datasets sharing framework was built up by Monitor and Discover Service (MDS), and then a common control model was proposed to realize spatial data access control. In this model, every user was mapped to a given role, and every role had a unique digital certificate...
Cloud services that provide virtualized computational clusters present a dichotomy of systems management challenges, as the virtual clusters may be owned and administered by one entity, while the underlying physical fabric may belong to a different entity. On the physical fabric, scalable tools that ldquopushrdquo configuration changes and software updates to the compute nodes are effective, since...
Grid provides an infrastructure to meet the high demands for resource sharing and collaboration. Semantic Grid contributes to create shared knowledge in a virtual organization (VO) based on semantic metadata. While it achieved providing relevant resource to users, a new Grid problem appears-personalized resource provision. Semantics regards the resources themselves rather than the surrounding information,...
FSP (foundation software platform) is the shoring of foundation for application system. The integration testing is the important method to ensure the quality of FSP. The integration testing of FSP would involve not only foundation software vendors, such as the vendor of operating system, the vendors of database management system and the vendors of middleware etc.; but also the users of FSP, such as...
Data is becoming more and more important in the current computing environment and enterprise application. In the grid, many systems and middleware aim to hide the heterogeneity of the data resources and to provide a unified way to access them. However, there are a few systems focusing on data integration which means combining structured and unstructured data residing at different data resources and...
We explore the status, challenges and opportunities in providing a resource center focused on large scale data management on the EGEE grid, in the context of the emerging Spanish e-science network. The application to bulky and relatively flat datasets in high energy physics is mature and in daily production. Transferring this methodology to other application fields is still ongoing, posing challenges...
Parallel I/O plays an increasingly important role in today's data intensive computing applications. While much attention has been paid to parallel read performance, most of this work has focused on the parallel file system, middleware, or application layers, ignoring the potential for improvement through more effective use of local storage. In this paper, we present the design and implementation of...
In order to build Grid resource sharing environment, a basic problem is to locate one or more entities (e.g. CPU, memory, OS, applications) that match a provided description, this called resource discovery process. This paper proposes a model of resource discovery method that based on classifying the nodes of resources according to their importance to a Grid application. Each group has a leader that...
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