网格：面向虚拟组织的资源共享技术

1.引言在过去的几年里,“网格”(Grid)一词主要在学术界使用。如今,它已从幕后走到了前台,在IT界引起人们的普遍关注。术语网格源于学术界的学派描述共享联网的所有资源(从PC到超级计算机),以共同地解决超级计算任务。一般认为,有关网格的实质性研究始于1995年。当时美国Argonne国家实验室的Ian Foster博士和南加洲大学信息科学研究所的Carl Kesselman博士共同领导了美国政府(能源部、NASA等)支持的高性能分布式计算项目Globus。在此项目中,为了标

An Assessment Method of Soil Quality:Spatial-temporal Changes and its Application

The "Grid" was coined in the mid1990s to denote a proposed distributed computing infrastructure for ad-vaced science and engineering. Now, it has emerged as an important new field. Grid computing can be defined as coordinated resources sharing and problem solving in dynamic , multi-institutional virtual organizations. In this paper, we introduce the idea of virtual organizations, present characteristics and requirments of virtual organizations resouces sharing , some important terms in Grid technologies are defined, and principle fundementals and critical ideas of Grid architecture are disscussed.