The Development And Research Of Subject Based Information Gateways Based On B/S

The emergence and quick development of Internet have brought important changes to people's information life. Great convenience is provided for the creation, delivery and use of information resources. At the same time,a few negative influences are also come out,including information redundancy,information quality problem,etc. Facing this new information environment and new problems that Internet has brought,the subject based information gateways(SBIGs)emerge with the tide of the times,and has become a deep organization mode of network information.They also help to raise information retrieval efficiency,and provide tremendous. The Subject Information Gateway develops after the Network Designation and the Resources Navigation. As a new network information of deep organization mode, it is an integration of network resources,tools and user service.The construction of the Subject Based Information Gateways in the world begins from the 1990s, so far the well-known Subject Information Gateway inside the scope of world is already up to 100. But the construction of the Subject information gateway in our country falls behind the world.This text expounds the conception and connotation of Library Portal in theory. And methods of making the customizing, expansive,framing Library Portal by .NET technology are introduced,including the system mode,holistic ideas and main developing techniques.