专业英语4 中间件_专业英语第4章翻译
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[1] 林强勇;吉国力;分布式对象模型实践,计算机工程与应用, Computer Engineering and Applications, 2004年 14期, 148-150，15
5题目：分布式对象模型实践
随着组件、中间件等分布式技术的深入应用,分布式对象模型的设计受到了越来越广泛的关注。该文针对当前分布式对象模型设计中存在的问题,首先提出了远程接口和本地接口的概念,然后分析了一种基于RemoteFacade和DataTransferObject设计模式的解决方案,并详细介绍了基于DataTransferObject的应用解决方案,在文章的最后,提出了一种分布式对象模型的设计架构。
Practice on Distributed Object Model
As deeply using of component and middleware,the design of distributed object is paid more and more at-tentions.Based on the current abuse,this article indicates firstly the conception of remote interface and local interface,analyses a solution based on design patterns of remote facade and Data transfer object,and then introduces the tutorial of data transfer object in detail.In the end,the article indicates a design framework of distributed object model.Title :Iues in designing middleware for wirele sensor networks
[1]Yu, Yang;Krishnamachari, Bhaskar;Prasanna, Viktor K, IEEE Network, v 18, n 1, January/February 2004;p 15-21,Wirele sensor(传感器)networks are being developed for a variety of applications.With the continuing advances in network and application design, appropriate middleware is needed to provide both standardized and portable便携式 system abstractions, and the capability to support and coordinate concurrent并发 applications on sensor networks.In this article we first identify several design principles for such middleware.These principles motivate a cluster-based lightweight middleware framework that separates application semantics语义 from the underlying hardware, operating system, and network infrastructure基础设施.We propose a layered architecture for each cluster that consists of a cluster control layer and a resource management layer.Key design iues and related challenges within this framework that deserve值得 further investigation are outlined.Finally, we discu a technique for energy-efficient resource allocation in a single-hop cluster, which serves as a basic primitive for the development of the resource management layer.无线传感网络随着大量的应用正在不断发展。随着网络和应用系统的不断进步，适当的中间件需要提供标准化、便携式的系统抽象，而且能支持和协调传感网中的并发应用程序。
在这篇文章中，我们首先认识一下中间件的几个设计原则。
这些原则有利于一个基于集群的轻量级中间件框架，将应用语义与底层硬件，操作系统和网络基础设施相脱离。我们提出了一个针对各种由一个传感控制层和一个资源管理层组成的传感器的分层框架。在这个框架内，值得进一步研究的关键设计问题和相关挑战也被作为大纲列出。最后，我们针对在单跳簇传感器中的高效节能资源回收讨论了一项技术，对于资源管理层的开发，这项技术作为一项基本的原始服务。
