共查询到20条相似文献，搜索用时 62 毫秒
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陈溪辉 《衡阳师范学院学报》2005,26(6):61-65
本文对分布式计算的模型及中件间的特点进行了探讨。研究了以中间件为基础的分布式计算解决方法，提出一种基于中间件的分布式网络信息检索模型，并介绍了利用JAVA开发平台进行模型的软件实现相关技术。 相似文献
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在介绍ICE中间件的基础上,提出了基于ICE的应用系统通信框架设计方案。该框架负责系统各部分之间的通信,在此框架基础上可以进一步扩展系统功能。 相似文献
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胡俊敏 《廊坊师范学院学报(自然科学版)》2010,10(6)
Web服务日益成为异构网络环境下的主流分布式计算模式.基于XML的数据传输格式在给Web服务带来跨平台性、松散耦合和良好的互操作性等优点的同时,也在一定程度上影响了其性能.Web服务的性能成为决定其是否能进一步得到更加广泛应用的关键因素之一.在分析Web服务性能的基础之上,针对Web服务的额外性能开销问题,以.NET平台为例,提出了使用缓存技术、SOAP压缩技术和异步Web技术等策略实现Web服务性能的优化. 相似文献
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分布式计算技术允许利用网络中成千上万台计算机的空闲时间和存储空间来完成需要进行大量计算事务的工作.本文建立了一个基于EJB的分布式计算模型,通过EJB体系结构实现分布式计算技术,较好地解决了网络中单台计算机无法完成的超大规模事物的问题. 相似文献
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柯斌 《宁德师专学报(自然科学版)》2005,17(3):266-268
利用J2EE中间件技术，给出一个通讯服务器的分布式实现方式：如部署无状态的Session Bean来负载均衡；利用对象池和缓冲机制来节约开销；着重从开发者和用户的观点分析了系统利用这种结构所获得的益处。 相似文献
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在传统的用户/服务器网络结构中,本地数据需要传送到目的地去进行计算和处理,而移动代理的出现则使移动计算变为了现实.移动代理的移动性使之比用户/服务器网络结构更适用于传感器网络.本文提出了一种适用于传感器网络的通用移动代理结构.这种结构称为基于移动代理的传感器网络(MAWSN).本结构中的移动代理可以从以下三个方面减少信息冗余度和通信的额外开销以延长网络的生存时间:①通过本地处理功能减少应用层的冗余度;②通过数据汇聚功能减少数据的空间冗余度;③通过多目标数据融合功能减少通信的额外开销. 相似文献
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程永上 《连云港职业技术学院学报》2006,19(3):19-21
网格计算在计算机领域掀起了很大热潮,而XtremWeb是一个轻量级的P2P网格中间件,为高性能计算提供多参数的分布式计算平台,不同任务的执行由一个中心控制节点管理,提供透明容错和安全机制。文章介绍了包含三种节点的XtremWeb系统体系结构和运行机制、透明容错功能和安全机制,最后使用该系统来实现一个矩阵分割的并行计算。 相似文献
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ICE中间件的研究与应用 总被引：1，自引：0，他引：1
阐述了ICE的架构优势、ICE的客户与服务器结构和基于ICE的分布式煤矿监控系统集成框架结构,分析了实现整个系统集成框架的一些关键问题,并给出了部分实例,进一步探讨了ICE的技术优势及应用方法． 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献