Context-aware systems: A literature review and classification
Expert Systems with Applications: An International Journal
Proceedings of the 9th ACM international symposium on Mobility management and wireless access
MultiS: A Context-Server for Pervasive Computing
Electronic Notes in Theoretical Computer Science (ENTCS)
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The concept of pervasiveness provides the future of computing with an attractive perspective. However, software support for physical and logical mobility raises a set of new requirements and challenges for software production, creating demand for new types of applications, the so-called pervasive applications, which express follow-me semantics. The core of these challenges is a dynamic operating environment, which originates with the users' movement in different terminals and locations, and determines different execution contexts. For this envision to become a reality, developers must build applications that constantly adapt to a highly dynamic computing environment. Research works in pervasive computing have already addressed important issues, but they do not approach the problem of how to program general-purpose pervasive systems. Pervasive applications are distributed, mobile, adaptive and consider context as a first-order concept. To make the developers' task easier, we have introduced the software architecture called ISAM, which provides an integrated environment aimed at building pervasive applications composed of a development environment and an execution middleware. As part of our study within the ISAM project, we have been investigating how context-awareness can be expressed at the programming language level with a basis on four main abstractions: context, adapters, adaptation commands, and adaptive behavior management policies. This paper introduces such abstractions, and presents some development and management tools anchored on an example application, which is under development. Copyright © 2006 John Wiley & Sons, Ltd.