Study On Construction Of Physical Electronics Subject-based Information Gateways

There are contradiction between web information's freedom and scientific nature, its huge scale and people's limited energy. Along with the scale expansion of internet, and the suddenly growth of web information, this kind of contradiction is increasing fiercely. It needs us to analyze and appraise the web information, establish the high grade, high pointed, and high scientific discipline guidance system, in order to adapt to the college teaching and scientific research's demands of effective gain and ultilization of web information resources.The dissertation plans to realize standard collection, classification, organization and the foreword reorganization of the web resources, and to carry out the multi-ways content promulgating of the navigation information in the second issue of CALIS web resources guidance system platform, through the construction of the physical electronics navigation database, which contains functions as resources construction, user service and resources collection and reorganization and so on.This dissertation studies the main content includes seven parts: First part, outline of domestic and foreign disciplines navigation database's research and development; Second part, the construction principle, strategic idea and request of the discipline navigation database; Third part, research about discipline navigation database's resources gathering and appraisal system; Fourth part, research about discipline navigation database's resources metadata standard and description rule; Fifth part, the design request and realization of physical electronics discipline navigation database, and the construction achievement and multi-level service function of physical electronics discipline navigation database; Sixth part gives the...