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The influence of illumination level on visual fatigue and lighting preference for young and elderly Chinese persons was studied while performing a paper reading task for 4 hours. Analysis of the subjective questionnaires and objective measurements showed that an illumination level ≥600lx is required for elderly and ≤600lx for young persons.
This paper analyzes and evaluates the Distributed Node Consensus Protocol (DNCP), a state synchronization mechanism developed by the IETF Homenet working group. DNCP enables network function automation for home networks, which are growing in size and complexity. The basic mechanisms of DNCP are studied in this paper, including the state abstraction, synchronization process and keep-alive mechanism...
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