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The Ambient Assisted Living domain is a fast growing area with many new technological artefacts and services developed. Most of the systems developed address end-users' needs. Yet, they have not achieved a large market penetration. The work presented here argues that this is primarily due to not sufficiently addressing the quality requirements posed by the health care organizations. Satisfying quality requirements requires a standardized and easily accessible framework for measuring quality. We present the initial steps towards such a framework by building on relevant ISO standards.

Industrial countries are faced with a growing elderly population. Homecare systems with assistive smart house technology enable elderly to live independently at home. Development of such smart home care systems is complex and expensive and there is no common reference model that can facilitate service reuse. This paper proposes reusable actor and service models based on a model-driven development process where end user organizations and domain healthcare experts from four European countries have been involved. The models, specified using UML can be reused actively as assets in the system design and development process and can reduce development costs, and improve interoperability and sustainability of systems. The models are being evaluated in the European IST project MPOWER.