Research of co-authorship network can reveal the scientific research collaboration network and can thus help us to have an understanding of it. Graphic database and Neo4J were described in detail due to the limitations of relationship database in processing the data of co-authorship network. Graphic database Neo4J-based research and practice of co-authorship network were analyzed with the Institutional Knowledge System of AMMS that we were involved in its construction as an example, and the advantages of Neo4J-based co-authorship network were summarized.

介绍数字版权管理技术及其在机构知识库中的应用,保证只有合法用户才能对机构知识库内数字文档进行授权操作,杜绝数字文档中的信息文档内容被恶意复制、篡改和传播,设置对电子资源流通借阅审批管理,实现机构库内容在合理、合法范围内传播利用.

[目的]研建军事医学科学院机构知识库(AMMS IR),促进机构知识资产的科学组织、集中揭示、存储管理和重用.[应用背景]完全遵循DSpace开发原则,采用B/S架构,使用PostgreSQL开源数据库,利用Java语言进行开发.[方法]在最核心的逻辑和功能上沿用DSpace-Core API部分,但不再依赖DSpace默认的展示层,在DSpace-Core API基础上重新设计,加入全新的“事件机制”、“插件机制”和“访问链”等机制.[结果]实现Solr作为搜索引擎的递进式分面检索与浏览、科技档案管理、机构资源数据分析和相关作者数据分析等功能.[结论]在基于DSpace的机构知识库软件系统的分面检索、语义分析等功能方面进行有益的探索与实践.

The types and sources of information resources in library and the need to integrate them were analyzed.The advantages and disadvantages of two technologies for integrating resources in library were summarized.The tendency was pointed out for library from integrating its resources with a single technology to integrating its resources with the searching and discovering system which has integrated two technological programs.The functions and features of several major searching and discovering systems were described.

The information behaviors of medical researchers in Chinese PLA medical research institutions were investigated with questionnaire,including their information resources need,information access and utilization,and information literacy.The new model of medical information service was studied in order to improve the information service in Chinese PLA medical libraries.

The application of computer systems in Medical Library of Chinese PLA was reviewed.The necessity and feasibility to upgrade the systems was analyzed,and the application of novel and old systems was comparatively analyzed with solutions for the problems in their application put forward.

After the current situation of digital resources integration in library was analyzed,the digital resources integration technologies were described,and the fact that kinked data are the development trend of digital resources integration was pointed out.

Subject-oriented service now has entered a deep developing period,which urgently need to find a break through point and establish an implemental model that is feasible,sustainable and suitable for the new information environment;Information commons(IC),which is a new kind of service model offers a valuable opportunity in service innovation.This is the future trend of modern library service innovation and development.On the basis of the similarities of IC and subject-oriented service,this paper conceptualized the mode of subject information commons(SIC)and discussed the construction of SIC with respect to space,resource and service.

The paper analyzes the advantages and disadvantages of current information resources integration model with a conclusion that combining with PubMed data sources is the best model to integrate foreign biomedical information resources for realizing unified platform, one-time retrieval,one-stop service.It also introduces the concrete practices of Medical Library of Chinese PLA in constructing itscollection core resources database.

It has been widely accepted that role-based access control(RBAC) is a convenient and effective access control strategy.Lightweight directory access protocol(LDAP) server can be used as a role server by making use of directory-oriented characteristics of OpenLDAP.Users or Web server can obtain the role information from the users of role server in a security pattern,thus accomplishing the uniform identification,single sign on,centralized authentication and the uniform management of network resources.

After a brief description of open URL which is a dynamic context linking technology,the main features in its wide application were analyzed,including its origin and development,basic frame of standards,and transmission mechanism.Its application prospect and role in development and use of resources in digital libraries were discussed.

After a brief description of the basic functions and characteristics of Lucence,the advantages and disadvantages of Lucence and other general databases were analyzed.A Lucence-based medical literature retrieval system was designed with Lucence as its bottom layer retrieval interface combined with databases concerning the application of medical literature retrieval system.The key techniques used in developing this system,especially the advantages and disadvantages of Chinese standard analyzer techniques,were discussed.

Since the situation of information security becomes increasingly severe,any single security technique or product cannot completely meet the requirements of users for the network security.Joint application of fire wall and intrusion detect system can effectively improve the maneuverability and real-time responsiveness of fire wall,and strengthen the blocking ability of intrusion detect system.

在传统局域网中,各站点共享传输信道所造成的信道冲突和广播风暴是影响网络性能的重要因素.为解决发生在网络第二层的信道冲突和第三层的广播风暴问题,网桥和路由器被广泛应用于局域网中.

Internet Protocol Version has been accepted as the backbone protocol of next generation internet widely.It is expected to be long transition periods in which two protocols will be coexist.How to make the applications that support IPv4 transit to IPv6 is an emergent question.

信息资源是图书馆生存和发展的基础,是满足用户需求的根本保证.网络技术和通讯技术的飞速发展,使图书馆的信息资源类型和馆藏结构发生了根本性的变化,也促使传统图书馆向数字图书馆的快速转变.

Based on analysis of the principle and functions of the proxy server and the reverse proxy server,this paper proposes a scheme of setting up a Web-based reverse access control system,and describes its function,model,and key technologies.

1计算机病毒的发展及特点 计算机病毒的发展史几乎就是计算机技术的发展史.随着计算机的诞生,就有了计算机病毒的概念.1949年计算机之父冯·诺依曼将计算机病毒的概念定义为一种"能够实际复制自身的自动机".

This paper enumerated various threats to network information security at present, and expounded the construction of security system of the network information from 5 points such as network security, operation system security, user security, application program security and data security.