In the past decade , the booming of internet challenges the middleware in three aspects : quality of service , balance of changes and stabilization , and across - internet integration L internet已逐渐演变成无处不在的计算环境，其内在的异构性和复杂性使得跨internet应用的服务质量保证成为一个重要问题
However , coming with the emergence of video applications under the network environment , the heterogeneous issue makes video coding confront with the challenge in efficiency and flexibility 然而,随着网络环境下视频应用的层出不穷,网络和终端的异构性使得视频编码方法在有效性和灵活性方面面临挑战。
Inids is intelligent in detection , extensible in structure , adaptive in new intrusion and heterogeneous in platform . our experiments show that it has promising applications in complex interconnected networks 取ids系统结构清晰，智能性、可扩展性和异构性好，对于目前复杂的网络结构具有良好的应用前景。
Because of the heterogeneous of a wireless sensor network system , traditional design of wireless sensor networks system modeling just focus on one aspect of entire system generally 由于无线传感器网络系统行为具有异构性,传统无线传感器网络系统模型设计建模侧重从无线传感器网络系统中单个子系统行为建模仿真。
At the same time , since corba is used as the middleware , the language independence and the heterogeneous platform in system design have been solved , which can make our system become a real open system 由于采用corba作为中间件，解决了系统设计的语言无关性、平台异构性，使系统成为真正意义上的开放式系统。
With the rapid development of internet , network and software technique , all kinds of computing environments nowadays are becoming characterized distinctly by distribution , cooperation , and heterogeneity 随着internet 、网络技术和软件技术的不断发展，分布式、可操作性和异构性已经成为各种计算环境的显著特征。
Because of the heterogeneity , distribution and autonomy of mdbs , the system architecture query processing and schema integration of the mdbs is much different compared with conventional database 由于多数据库系统具有异构性、分布性和局部自治性的特点，使得多数据库的结构、模式集成、查询处理与传统数据库有很大的不同。
In cluster computing environment , due to the heterogeneity of cluster , large performance gap may exis t among computers nodes and among interconnected networks . besides , network topology is usually irregular 在集群环境中，计算机结点和网络存在着异构性，主要表现为计算机结点性能和网络性能各有差异、网络拓扑结构也不规则。
These platforms are based on distributed network environment . although they are able promote enterprise application , they have the complicated characteristic of distribution , asynchrony , and concurrence 这些平台都基于分布式网络环境，虽然能够有效地促进企业应用，但是具有异构性、分布性、并发性、异步性等诸多难以控制的特性。
Owing to the heterogeneity existing in many aspects of monitoring systems such as hardware platforms operating systems , databases and programming languages etc , data exchanging among different systems is very difficult 由于各现场站监控系统在硬件平台、操作系统、数据库和编程语言等方面存在异构性，使得系统之间的数据交互困难重重。
