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In the era of Internet-based services, companies increasingly use Web technologies to interact. Due to the inherent heterogeneity both at data and process level, ensuring interoperability between Information Systems is difficult. To automate electronic exchanges between businesses, the classical approach is to follow strictly at runtime a common interacting protocol that must be defined beforehand...
In this paper indoor wireless Infrared (IR) technology for healthcare monitoring is studied. Monitoring provides a continuous and reliable vital sign measurement to secure patient staying in the hospital. Considering that patient moving is inevitable, we focus on a mobile IR channel based on diffuse propagation. A model of mobile channel is developed through the study of statistical distributions...
In this paper, we briefly describe the wireless sensor network(WSN), and highlight the design of RF antenna with a gain based on nRF905 chip, then complete an intelligent greenhouse monitoring system for agricultural greenhouse temperature based on WSNs. Finally, we confirm the feasibility of the system design through some tests.
Signal Strength based position verification is more promising as compared to other Sybil attack detection techniques because it is lightweight and does not require centralisation. Nodes can locally determine their locations through received signal strength variations and inform neighbours about location updates accordingly. In position verification, network nodes verify the position of each node and...
Micro-climate monitoring usually requires deploying a large number of measurement tools. By adopting vehicular wireless sensor networks (VSNs), we can use fewer tools to achieve fine-grained monitoring. This work proposes a VSN architecture to realize micro-climate monitoring based on GSM short messages and availability of GPS receivers on vehicles. We demonstrate our prototype of a ZigBee-based car...
As the complexity of systems is rapidly growing, the designers are moving towards use system level design Languages (SLDL) such as SystemC and SpecC. In this paper we use SystemC and SpecC languages for modeling and simulation of wireless sensor networks (WSN). First we start on simple ECO model and add modular sections as increases as the complexity. In the next step, we add data encryption using...
A low-power over-Gbps wireless pulse communication is realized at the 60 GHz band. To detect 60 GHz pulses in a receiver, a single-ended MESFET detector or a diode was conventionally used. However, the MESFET detector cannot be integrated on the silicon substrate with the CMOS building blocks of the receiver and a diode is unavailable in general design rules. To overcome this issue, a common-source...
A requirement for multiple frequency reception is placed on many mobile radio systems. The disadvantages of the present multiple frequency monitoring methods are reviewed and the design considerations of a new unique technique which overcomes these limitations are presented. Basically, this method utilizes sampling or time-sharing to always assure reception of the system's primary channel.
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