网络安全性

Studies on several well-known blackouts reveal that the weakest parts of network, where branch MW flow limit violations most possibly occur, are the transmission lines suffering from flow transferring most greatly after the overloaded line tripping. Therefore, this paper attempts to speed up the solution by means of partial solutions instead of the whole network solution.

因此，本文试图通过对电力网络中薄弱环节安全性状况的分析获得整个系统的安全信息，即通过局部网络的分析替代全网潮流计算以达到降低工作量的目的。

In order to improve the reliable transmission efficiency, Ahlswede et al. introduced the network coding theory. Network coding can not only increase network throughput, but also advance in data universalness, robustness, reliability and security.

为了实现更高的传输效率，Ahlswede等人提出采用网络编码的方法，不但可以提高网络吞吐量，而且在普适性、鲁棒性、可靠性和安全性等方面都具有优势。

In the end, the improved method of security, performance and interoperability is put forward and its vole in the programming network is discussed.

探讨了主动网络在安全性、性能和互操作性等方面改进的措施，并对其在可编程网络中的地位给予了评价。

The last chapter discusses the safety of wireless networking and provides the solutions, how to make the advantage and security can be compossible.

最后第五章针对无线网络的安全性进行讨论并提供解决方案，在保证在发挥无线性能的优势同时，保证WLAN校园网的数据安全，提高无线校园网络的安全。

With the continued increasement of applications and the requirements of variety using, the security of the network is becoming more and more important.

随着网络技术应用的急剧增加和对业务多样性要求的提高，网络的安全性问题日益突出。

With the continued increasement of applications and the requirements of variety using, the security of the network is becoming more and more important.

中文摘要：随着网络技术应用的急剧增加和对业务多样性要求的提高，网络的安全性问题日益突出。

With the continued increasement of applications and the requirements of variety usage, the security of the network is becoming more and more important.

随着网络技术应用的急剧增加和对业务多样性要求的提高，网络的安全性问题日益突出。

A case ofapplication of CAN bus on the distributed automatic system ofsubstation is illustrated.To meet the need ofautomatic controlsystem ofsubstation,a network is necessity because ofthe distributed control units ofthe substation.To shortenthe developed period of the system,an interface bridge between the RS232 and CAN bus is made.The result oftest run shows thatthe requirements ofsystem can be satisfied by the project.

摘 要：对一个把CAN总线应用到分布式变电所自动化系统的例子进行了分析，对于分布式变电所自动化系统来说，通信网络的效率、安全性和实时性具有重要意义，在实际工作中，通过在现行测量、控制和保护单元外增加一个RS232和CAN总线之间的转换器，构成变电所自动化系统的现场总线网络，试运行情况表明：该方案完全能满足系统的要求。

By the application server of MS, CATV operators can access the database server to independently manage the users. The network bottleneck, performance descent brought by the overabundant connection of database and load balance of business process is solved effectively, and the response time of database and system security is improved.

各有线电视网络运营商可通过管理系统的应用服务器，访问数据库服务器，达到了用户的独立管理，有效地解决了网络瓶颈和数据库连接数量过多造成的数据库性能下降的问题，实现业务处理负载均衡，提高了数据库响应速度，同时使系统的安全性得到提高。

Usually, enterprise employees of different sectors are not centralized when they work. They are scattered in different floors or regions. As network users, they need to be centrally managed; Many sectors demand for high network security to prevent data from being eavesdropped. They can not share one same Ethernet with other sectors.

在企业中，很多部门的员工并不是集中办公，他们分布在不同的楼层或地域，做为网络用户，他们需要集中管理；也有很多部门在网络上需要越来越高的安全性，不能和其他的部门混用同一个以太网段，以防止数据窃听。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了