Information Technology has double effects.On the one hand,it plays a positive driving role to the progression of the society.On the other hand,it carries some negative effects to the socliety of mankind.This paper mainly expounds several aspects of the negative effects of information technology to the society,then advances several views in accordance with the prevention of these negative effects.

This article introduce the first local area automatic network of public library in China summarily, including the general design, the scale, the mode and basic function of the network, the network structure and the technique with it to realize the structure. This article also mentions the local corporation among libraries under the network environ ment and the future of development.

The article briefly discusses the interlink among library information systems on network environment as well as its purpose.The technical requirements,main tasks and characteristics for the multi library co-operating system are also described.The impact of system interlink on the libraries of China and its related progression are explored further.

Online searching is a rapidly-developing information retrieval method. Although it is easy to use,it still has some disadvantages.This article analyses the problems on the level of easiness in usage and puts forward a proposal to solve these problems by using the local communication system as an extension of the wide-area communication.

This paper discribes the recent technology of CD-ROM networking and provides an example of LAN for CD-ROM databases.It also refers to retrieval index CD-ROM, full-text CD-ROM database and the developing multimedia CD-ROM network.

The paper discusses the problems facing China' s information retrieval services and analyses emphotically the effects of retrieval models of CD-ROMs and International online searching on the information services in China.According to the actual conditions in China,the paper also puts forward the proposals for developing science information services in China.

This paper discusses the dictionary corpus,the electronic publication of dictionaries as well as the compiling technology.Differences between the bilingual dictionaries and the terminology dictionaries are also summarised.

On the basis of investigation,statistics and structure analysis of American SISAC barcode, a conclusion is reached by the author, that in functions SISAC code greatly exceeds ISSN/EAN code which is currently adopted in China. SISAC code is an important way to estalish serial control automation and EDI among libreries, subscription agencies and publishers, and an orientation for the standardization of Chinese serial identification system as well.