Distributed virtual environments (DVEs) are distributed systems that allow multiple geographically distributed clients (users) to interact simultaneously in a computer-generated, shared virtual world. Applications of DVEs can be seen in many areas nowadays, such as online games, military simulations, collaborative designs, etc. To support large-scale DVEs with real-time interactions among thous...

The Distributed Batch Controller (DBC) supports scientiic batch data processing. The DBC distributes batch jobs to one or more pools of workstations and monitors and controls their execution. The pools themselves may be geographically distributed, and need not be dedicated to processing batch jobs. We describe the use of the DBC in a large scientiic data processing application, namely the gener...

Recently, emerging high performance applications require the ability to exploit diverse, geographically distributed resources, specifically, in a Grid environment. A collection of software, called the Globus grid toolkit, is developed to address related drawbacks. In this paper, we describe an application (we call it Distributed Media Service System, DMSS for short) developed in this toolkit: w...

Grid computing has emerged as an important new branch of distributed computing focused on large-scale resource sharing and high-performance orientation. In many applications, it is necessary to perform the analysis of very large data sets. The data are often large, geographically distributed and it’s complexity is increasing. In these area grid technologies provides effective computational supp...

The beginning of the 21st century will present new challenges for largescale applications involving communication with, and coordination of, large numbers of geographically dispersed information sources, supplying information to a large number of geographically dispersed information consumers. Applications of this class will require an environment which supports longterm or continuous, reliable...

Computational and data Grids couple geographically distributed resources such as high performance computers, workstations, clusters, and scientific instruments. Grid Workflows consist of a number of components, including: computational models, distributed files, scientific instruments and special hardware platforms. In this paper, we describe an interesting grid workflow in atmospheric sciences...

Sensor data fusion applications generally use networked computational resources to process information. For high sensor data rates, distributed, parallel computing is necessary to keep up with the processing of the incoming signals, and the dynamic management of these geographically dispersed resources is necessary for fault tolerance and efficient use of resources. This research reports on a p...

The development of software products has become a highly cooperative and distributed activity involving working groups at geographically distinct places. These groups show an increasing mobility and a very flexible organizational structure. Process methodology and technology have to take such evolutions into account. A possible direction for the emergence of new process technology and methodolo...

Collective communication operations such as broadcast, gather and reduce are potential performance bottlenecks for scientific computing software. With the advent of wide-area distributed computing and computational Grids, achieving efficient collective communication for applications running on geographically distributed computers becomes of paramount importance. We propose an efficient broadcas...

The study combines available data on species distribution in eastern Indochina to investigate the phylogeographical genetic and morphological diversity of tree rats ( Chiromyscus , Rodentia, Muridae) specify their natural ranges. We examined over its range, based recent molecular for mitochondrial Cyt b COI ) nuclear IRBP RAG1 GHR genes. presents most complete up-to-date phylogeography genus In...