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UDesign: End-User Design Applied to Monitoring and Control Applications for Smart Spaces

João Sousa, Bradley Schmerl, Vahe Poladian and Alex Brodsky.

In Proceedings of the 2008 Working IFIP/IEEE Conference on Software Architecture, Vancouver, BC, Canada, 18-22 February 2008.

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This paper introduces an architectural style for enabling end-users to quickly design and deploy software systems in domains characterized by highly personalized and dynamic requirements. The style offers an intuitive metaphor based on boxes, pipes, and wires, but retains enough preciseness that systems can be automatically assembled and dynamically reconfigured based on uDesign descriptions. uDesign was primarily motivated and validated within monitoring and control applications for smart spaces, but we envision possible extensions to other domains. Our contribution differs from early attempts at end-user programming in the level of abstraction, software architecture rather than programming, and in the subject of description: run-time rather than code structures. To validate the approach, the paper presents (a) two case studies, one in health care and one in home security, (b) the formal semantics of uDesigns primitives, and (c) a mapping of those primitives to an existing software infrastructure: the Aura infrastructure.

Keywords: Architectural Style, Aura, Service Composition, Ubiquitous Computing.  
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