大规模在线学习平台是近年来出现的一种新型的满足教育需求的平台,本文简要介绍并研究了当前国内外流行的智能答疑系统,在此基础上分析了国内外智能答疑系统的优点与不足,研究、设计及开发了基于大规模在线学习平台的智能答疑系统原型,并结合"教育技术"这门MOOC课程,进行了应用实践,效果良好.

梦课学习平台是承载全军数十万名乃至数百万名官兵开放课程的在线学习平台，本文阐述了平台从原型系统选型到技术路线、系统架构设计等发展过程中的技术与实践。

With the advancement of information technology,more and more universities are providing IT service based on cloud computing.Currently,the research of resource management for university cloud service is still at the primary stage,and no uni fied management pattern and standard have been formed.This paper firstly analyzes the characteristics of the operation and main tenance pattern of the university information infrastructure under the cloud computing circumstance.Following that,this paper proposes a resource management method and workflow based on the idea of ITIL for university cloud service,which provides some useful exploration of the resource management mechanism suitable for the characteristics of university cloud service.

The purpose of automatic summarization is to extract Abstracts from the original literature automatically by computer technology.According to the problem,this paper proposes a new Chinese automatic summary method based on LSA.This method obtains the text semantic structure by using Singular Value Decomposition(SVD),and extracts a set of sentences based on similarity between sentences and the text as the summarization of the text,enhancing the efficiency and precision of automatic summary.This paper mainly introduces the basic idea,characteristics and implementation method.The experimental results show that this method gets the expected effectiveness.

As enterprises,government departments continue to expand the size of the internal LAN,network plays an increasingly important role in the day-to-day office work; the growing importance of network security issues becomes more serious.This article focuses on the analysis and research based diskless confidentiality intranet network modes and technical points,gives the instances of construction,their advantages and disadvantages.

Network traffic control technology and devices can serve to improve the distribution patterns of network traffic to ensure bandwidth for critical applications.Network traffic control devices of high performance in multi-bridge hierarchical deployment model can improve the quality of procotol flow control,and the multi-level feedback is useful to enhance the effect of traffic control applications.With the actual network environment and network application integration,it is benifit to achieve further refinement of the whole lan network traffic control strategies and then achieve the flexibility of different regions with different traffic control rules to ensure that the network resource optimization and a better network experience.

With the rapid development of the internet,netizen can make comments on a variety of hot issues easily,so large-scale effect of public opinion is formed.How to monitor the online public opinion real-timely has been deeply concerned by some departments and agencies.In this paper,a simple,full-featured automated network monitoring and analyzing system of public opinion is designed and implemented by using these technologies of search engine,web monitoring,HTML parsing,web mining and others.The system can monitor the forums,search engines,blog and other information,and also has a practical application in a university.

Wireless sensor network(WSN) has a widely potential application on digital campus.Reducing energy consumption to extend network lifetime is an important challenge in the design of campus wireless sensor networks.Node scheduling is a crucial method to realize this object.A distributed,lightweight node scheduling algorithm is proposed in this paper.This algorithm has low communication cost,does not rely on node location information,and is easy to be implemented in large scale campus wireless sensor networks.

Since the mid-1990s,the U.S.Army has launched a distance learning program to offer the soldiers high-quality education and training through the network.The program proves an unparalleled success as a result of its scientific management,commercial operation and effective one-stop-service.The experience of the program may serve as significant reference for china's military academies to deliver distance learning services to the PLA soldiers.