Collaboration and composition: issues for a second generation process language
ESEC/FSE-7 Proceedings of the 7th European software engineering conference held jointly with the 7th ACM SIGSOFT international symposium on Foundations of software engineering
Communicating and mobile systems: the &pgr;-calculus
Communicating and mobile systems: the &pgr;-calculus
Wireless sensor networks
Contiki - A Lightweight and Flexible Operating System for Tiny Networked Sensors
LCN '04 Proceedings of the 29th Annual IEEE International Conference on Local Computer Networks
Supporting lightweight adaptations in context-aware wireless sensor networks
Proceedings of the 1st International Workshop on Context-Aware Middleware and Services: affiliated with the 4th International Conference on Communication System Software and Middleware (COMSWARE 2009)
WiSeKit: A Distributed Middleware to Support Application-Level Adaptation in Sensor Networks
DAIS '09 Proceedings of the 9th IFIP WG 6.1 International Conference on Distributed Applications and Interoperable Systems
Towards Verifying Correctness of Wireless Sensor Network Applications Using Insense and Spin
Proceedings of the 16th International SPIN Workshop on Model Checking Software
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Wireless sensor network (WSN) applications are often characterised by close coupling between their software and hardware components, which may result in ad-hoc, platform-specific software, together with the loss of portability and evolvability. We introduce a fractal composition-based approach for constructing and dynamically reconfiguring WSN applications. The approach uses π-calculus semantics to unify the models of interaction for both software and hardware components, on both local and remote nodes. Applications are constructed by forming compositions of interacting components, and can be decomposed and reconfigured into different topologies. The advantages of the approach are that it reduces the complexity of WSN programming; results in portable and evolvable software; and allows changes to be managed during execution without having to take the system off-line. We present an outline of the approach, and illustrate it with an example specified in the Insense language.