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A recent trend in the data aggregation research is to utilize an optimal or suboptimal tree. These approaches, however, have high computational complexity, and the tree must be reconstructed whenever the topology changes. To avoid this overhead, the proposed method does not use any data aggregation tree. In our method, each sensor sends aggregated data with an aggregation period and receive buffer...
This paper proposes a method to provide the frame synchronization for the high quality 3D broadcasting service in a mobile broadcasting system. In this method, left and right video frames are delivered through a heterogeneous network which consists of a mobile network and a broadcasting network, to overcome the limited bandwidth of the broadcasting network. Then it is more difficult to synchronize...
This paper proposes advanced service models to enhance the QoE (quality-of-experience) of users in the mobile broadcasting communication system. The temporary out-of-service due to communication error and the long delay for channel switching are considered as most significant problems in the broadcasting system. To resolve these problems, this paper suggests four service models. Three of them are...
Waterproofing treatment is important for the preservation of smectite-rich rocks because of their shrinking and swelling properties. The effects of water repellents on the smectite structure and the water sorption of untreated and treated smectites were studied using X-ray diffraction. The hydrophobic Wacker BS 290 (around 100% silane/siloxane) does not prevent water from sorbing on the interlayer...
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