Grid Datafarm architecture is designed for facilitating reliable file sharing and high-performance distributed and parallel data computing in a Grid across administrative domains by providing a global virtual file system. Gfarm v2 is an attempt to implement a global virtual file system that supports a complete set of standard POSIX APIs, while still retaining the parallel and distributed data c...

In this paper, Grid technologies are introduced to build e-Learning environments for engineering education. Service-oriented Grids open new fields of applications, the Learning Grids. The learning services concept based on a learning model and their deployment through Grid technologies are excellent means to integrate virtual laboratories into e-Learning environments for engineering education. ...

A unified virtual oscillator controller (uVOC) is proposed, which enables a analysis, design, and implementation framework for both grid-forming (GFM) grid-following (GFL) voltage-source converters (VSCs). Oscillator-based GFM controllers, such as dispatchable control (dVOC), offer rigorous analytical with enhanced synchronization but lack effective fault handling capability, severely limits pr...

The dissolution of Virtual Organizations is not just a stage where the commitments between the partners take to an end, but an issue that is worth considering through all the life cycle in Virtual Organizations. This paper gives further light to the model of Virtual Organizations split in several phases, detailing their roles and significance, and explaining from previous experiences why the di...

Grid Computing allows coordinated and controlled resource sharing and problem solving in multi-institutional, dynamic virtual organizations. Moreover, fault tolerance and task scheduling is an important issue for large scale computational grid because of its unreliable nature of grid resources. Commonly exploited techniques to realize fault tolerance is periodic Checkpointing that periodically ...

6.1 GENERAL This chapter describes the limitations observed in conventional Grid architecture and the integration of virtualization techniques to address them. The integration of virtualization technologies in Grid infrastructure allows scheduling user's application to the potential physical resources even if they do not possess required application environment by creating virtual resources as ...

Based on the Small-World model of CAS e-Science and the power low of Internet, this paper presents a scalable CAS e-Science Grid framework based on virtual region called Virtual Region Grid Framework (VRGF). VRGF takes virtual region and layer as logic manage-unit. In VRGF, the mode of intra-virtual region is pure P2P, and the model of inter-virtual region is centralized. Therefore, VRGF is dec...

The paper aims to contribute to the development of pro-active Virtual Organization (VO) management. A method called “VO qualitative monitoring” is proposed based on the analysis and monitoring of VO success factors. The approach is applicable especially for VOs which have abstract objectives (difficult to measure quantitatively) and require personal and organizational commitment. Also the first...