With the explosion of services in grid environment, it＇s necessary to develop a mechanism which has the ability of discovering suitable grid services efficiently. This paper attempts to establish a layered resource m...With the explosion of services in grid environment, it＇s necessary to develop a mechanism which has the ability of discovering suitable grid services efficiently. This paper attempts to establish a layered resource management model based on the locality principle which classifies services into different domains and virtual organizations （VOs） according to their shared purposes. We propose an ontologybased search method applying the ontology theory for characterizing semantic information. In addition, we extend the UD- D1 in querying, storing, and so on. Simulation experiments have shown that our mechanism achieves higher performance in precision, recall and query response time.展开更多
This paper reports on a LSC(Library Society of China) funded project 'Library Service Network Development' and its major findings.The primary objective of the project was to investigate the work that Chinese l...This paper reports on a LSC(Library Society of China) funded project 'Library Service Network Development' and its major findings.The primary objective of the project was to investigate the work that Chinese local governments and the library profession has devoted to consolidating regional and local library systems for equitable access since the beginning of this Millennium.The study shows that in the past few years,local governments and library professionals have proactively sought ways to establish community based libraries,build contract based main-branch relations and develop regional library service networks.The study also shows that although these endeavors have produced visible improvement to local public library systems and have accumulated valuable experience for promoting equality of access,a true and sustainable equality of public library access requires radical changes to the governing structure of Chinese public libraries:it requires a redefinition of their development agents and administrative unit.展开更多
基金Supported by the High Technology Research andDevelopment Program of China (2003AA414210) and the NationalNatural Science Foundation of China (60173051)
文摘With the explosion of services in grid environment, it＇s necessary to develop a mechanism which has the ability of discovering suitable grid services efficiently. This paper attempts to establish a layered resource management model based on the locality principle which classifies services into different domains and virtual organizations （VOs） according to their shared purposes. We propose an ontologybased search method applying the ontology theory for characterizing semantic information. In addition, we extend the UD- D1 in querying, storing, and so on. Simulation experiments have shown that our mechanism achieves higher performance in precision, recall and query response time.
文摘This paper reports on a LSC(Library Society of China) funded project 'Library Service Network Development' and its major findings.The primary objective of the project was to investigate the work that Chinese local governments and the library profession has devoted to consolidating regional and local library systems for equitable access since the beginning of this Millennium.The study shows that in the past few years,local governments and library professionals have proactively sought ways to establish community based libraries,build contract based main-branch relations and develop regional library service networks.The study also shows that although these endeavors have produced visible improvement to local public library systems and have accumulated valuable experience for promoting equality of access,a true and sustainable equality of public library access requires radical changes to the governing structure of Chinese public libraries:it requires a redefinition of their development agents and administrative unit.
