The Research On Grid And Its Application Based On The Platform Of Shanxi's Science And Technology Infrastructure

The construction of the platform of Shan Xi's science and technology infrastructure is one of the critical reforms in our province's scientific resources based on market-oriented economy. It is a systematic engineering aimed to make strategic reshuffle of our province's scientific resources by utilizing the modern technologies such as digitalization, networks and intelligence.Grid has been known as the third generation of Internet whose target is to connect and share all the information on the internet including information resources, computation resources, store resources and knowledge resources. Thus it makes for powerful technical support for the higher data integration among science and technology infrastructure, and it is possible for the elimination of the information island in the systems. Therefore, the research on grid and its application of the platform of Shan Xi's science and technology infrastructure is of great application value.In the thesis, first relative technologies about grid are discussed from various ways including the meaning of grid, its systematic structures, categories and the strengths of grid. The primary characteristic of grid is that it enables the sharing of resources and the elimination of information isolation. The target of grid is to share all the information and cooperate with each other. The concept of grid can be used to guide industries or enterprises to make holistic plan, and allocation or sharing of all the resources of all departments in them, instead of the planning, owning and utilizing of the resources by every individual department. Thus it is a critical technology for resources -sharing.Then the thesis puts up the general design from the design of conception,logical function and service-running structure, and brings forward my jobs according as the phase of the item.Following the general design of platform and my present jobs, I discuss the realization of the portal. The construction of the combined portals in Shan Xi's science and technology infrastructure aims to make resources reshuffle and systematic so that scientific creativity can be promoted by allocating and utilizing the resources available in our province. Individual users can have individualistic application interface according to their usage features or roles by uniform accessing entrance. What's more, it can provide individualistic service by connecting all the users together through the handling and transfer of all the relative events and information. Firstly, this part discusses portal technology detailedly, next at the condition of liferay portal, I develop my portlet, and implement individualistic portal system.The last part of the thesis focuses on the realization of the reshuffling of the resources, especially emphasizes the realization of the reshuffling of the metadata. Sharing system is the core of the construction of Shan Xi's science and technology infrastructure while reshuffling of the resources is the main consideration, for the sake of agility and dynamic reshuffling of various domain and knowledge, for the sake of accomplishing supporting services of cross-disciplinary and cross-child-platform, we must use metadata technology, in this part I introduce the development of the report of metadata, and realize the reshuffling of the metadata.In addition, the thesis further summarizes the research results and research weakness so that it points to the further research ideas and direction; the thesis gives the future application of grid in the platform.