(1) China launched a three-million-dollar national basic research program project “Fundamental Theory, Model and Method of Semantic Grid” in 2003 (www.semgrid.net). (2) The Future Generation Computer Systems published the 1st journal special issue on semantic grid and knowledge grid in 2004. Its editorial addresses the notion of Social Grid, Semantic Resource Grid, Knowledge Grid and relevant k...

We develop closed-form expressions of the expected minimum search energy cost and replication energy cost for both unstructured sensor networks (which use blind sequential search for querying) and structured sensor networks (which use efficient hash-based querying). We use both the square grid and random topology to derive each cost modeling. We find that the search cost of unstructured network...

We present a distributed version of IDA* search algorithm for a computational grid. We also propose a grid architecture based on a multi-agent system paradigm applied to mobile devices on a cellular network. The proposed algorithm is specifically designed to adapt to the flexible environment of the grid. In this paper, we discuss several aspects of the distributed IDA* algorithm and the underly...

Digital video compression technologies have become an essential part of motion estimation technique. The motion estimation of H.264/AVC is a time consuming process. Many algorithms were proposed for the video stream motion estimation, but they have a high computational complexity which significantly increases the encoder complexity. This paper proposes the Modified Unsymmetrical-Cross Multi Hex...

Scalable mechanisms to support efficient key-based search in distributed systems are an important part of the infrastructure of peer-to-peer systems and global information systems. They received substantial attention both in information and communication systems research. A particularly important class of approaches is based on a principle of scalable distribution of binary search trees that ha...

The recent booming interest in Knowledge Grid is just there. It can at least be revealed by the tens of thousands of related entries that Google.com returns based on these two buzzwords. If the ultimate goal of Grid computing is to facilitate distributed computing power access in a seemless manner, that of Knowledge Grid is to mobilize the distributed knowledge for effective reuse. “The Knowled...

Load balancing is one of the major search areas in grid computing. The strategy of the grid computing is another important topic. Job scheduling is the way of scheduling jobs in a grid environment that contains heterogeneous resources. The strategy of the grid computing describes the overall model of the grid hierarchy. Some papers show a tree model for a grid computing. This paper enhances a m...