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中文摘要：
普适计算的适应性特征带来了有必要在软件平台层面解决的一系列共性问题,包括如何定义所支持的自适应软件体系结构、如何为上层应用的自适应提供必要的公共服务、如何使平台自身可以适应多维资源受限环境等。针对这些挑战,提出了对普适计算设备/资源进行适应性抽象的自主单元的概念,在此基础上给出了面向普适计算的自适应软件平台UbiStar的系统架构及其核心机制的设计与实现,并对UbiStar平台对适应性软件所提供的支持机制进行了概括,最后对相关工作进行了分析与比较。
英文摘要：
The adaptability feature of pervasive computing brings about a series of new challenges which have to be resolved on the software platform layer,such as how to define the architecture of pervasive applications,how to provide common services necessary to the adaptation of upper-layer applications and how to adapt the platform to the multi-dimensional resource-constrained environments.Confronted with those challenges,this paper introduces the Autonomic Unit concept,which abstracts the devices and resources in the pervasive computing environments and takes adaptability as an inherent property.Based on this concept,we present the architecture of a self-adaptive pervasive computing software platform UbiStar,and present its design and implementation.The mechanisms to support adaptive software in UbiStar are concluded,and the related works are compared.
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