数据库资源是高等学校图书馆建设的一个重要内容。随着越来越多的商业数据库的出现，对数据库资源进行评价已经变得非常重要，本文首先分析高等学校图书馆数据库评价的意义，然后建立了数据库评价指标体系以及各项指标的具体内容，这些指标对于图书馆数据库的购买决策具有一定的参考价值。

知识管理与电子商务是网络时代的两个重要的研究领域，本文从电子商务企业的信息系统建设、业务流程重组以及客户关系管理三个方面，分析电子商务中知识管理的应用以及存在的问题。

本文根据电子商务的基本原理，讨论企业电子商务的成本/效益构成及其相应的分析方法，使企业在开展电子商务时能够尽快地得到回报。

Government procurement, known as the "Under Sunshine" system in China, has saved millions of US dollars of government expenditure. China will gradually expand the scope and scale of government purchase after the country's first Government Procurement Law took effect on January 1, 2003. Compared to the developed countries, the technology applied in government procurement is obsolete. Government electronic procurement auctions are irregular, and the government electronic procurement auction systems are not completely implemented. In this paper, we analyze the current situation of government procurement in China, and support that establishing government procurement electronic auction system is the best way to solve problems such as unfairness, collusion, inequality and inefficiency. Then, we give a detailed discussion about the framework of government procurement electronic auction system and the features of each subsystems and modules. Finally an actual application of this system is given, and an auction algorithm is also developed. We also provide directions for further studies about government procurement and the application of electronic commerce in this field.

The query conditions are imprecise or uncertainty in multimedia information retrieval. So it is impossible to get completely information by using traditional retrieval method and new techniques must be developed in order to get the best similar retrieval results under the inaccurate or incomplete retrieval conditions given. In this paper, a fuzzy semantic distance model and a concept of fuzzy similarity are first proposed and fuzzy query processing in fuzzy space is described; then, the algorithm of information retrieval in multimedia databases based on fuzzy similarity is provided; finally, an example is used for explanation the algorithm.