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Energy conservation is a critical problem in wireless sensor networks (WSNs). Cross-layer design can provide energy efficiency through joint energy management and optimization. In this paper, based on two orthogonal modulation schemes- frequency shift keying (FSK) and pulse position modulation (PPM), we put forward a multi-layer energy efficiency optimal joint design approach for WSNs. Considering...
Virtual Reality technology is increasingly being used in mining data visualization, accident simulation, miner training, equipment simulation, and risk evaluation in mining industry. However, little attention has been paid on modeling risk behaviors in underground coalmine. Based on Multi-agent technology, a hierarchical architecture for modeling the risk behaviors in coalmine virtual environment...
For any computing system to be secure, both hardware and software have to be trusted. If the hardware layer in a secure system is compromised, not only it would be possible to extract secret information about the software, but it would also be extremely hard for the software to detect that an attack is underway. In this work we detail a complete end-to-end fault-attack on a microprocessor system and...
Based on needs of health management, and the earlier period of research work about personalized energy consumption model, this thesis presented the design and analysis of personalized health management service system. The system framework was divided into six layers: the operating system and hardware layer, middleware and database layer, application layer, portal layer and client layer. It can achieve...
This paper introduces an application framework for the Institute of Electrical and Electronics Engineers (IEEE) 1588 standard. This application framework, developed at the National Institute of Standards and Technology (NIST), consists of five layers: hardware layer, operating system layer, middleware and tools layer, IEEE 1588 layer, and application layer. A prototype application system has been...
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