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Problem Description

The computational infrastructure for information technology will be composed of a huge number of highly heterogeneous devices connected by different network technologies, where a great number of services and resources will be available to users. A key point of this infrastructure is mobility. The user will no longer be restricted to fixed points of access and, using different devices, will be able to access services and resources. In addition, he(she) will be able to discover and interact with new entities as he(she) moves around. This computing environment will be highly dynamic. New services and resources will be frequently included, removed, reconfigured, and moved from one place to another. Users will be moving and the communication and coordination between all these components utilize a highly heterogenous network. In these ever changing environments, it will not be possible to use static software configurations and still obtain optimal performance. The software will have to be as dynamic as the computational environment it is inserted. This can only be achieved through adaptation. In order to provide a seamless environment for users, applications and systems must adapt themselves as mobility, variations in resources availability, and other environmental changes take place.

Subsections
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Francisco Jose da Silva e Silva 2001-09-24