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In this paper we present a model of single-hop type wireless sensor network with random access and oneway transmission. In the paper, we analyze the WSN single-hop network using one single radio frequency, such that all nodes are divided into several groups depending on the average time between the transmissions. We replaced deterministic number of nodes in groups by random variables. We apply the...
Inspection of the structural health of the bridge column is very important task but near-water surface region is dangerous for structural health monitoring robots due to water tides and spray. The unmanned surface vehicle with vertical thrusting function was developed to attach bridge column regardless of the surface status or material for close inspection and minimizing turbulence or external flow...
As nuclear facilities are introducing digital equipment, the cyber security issue becomes emerging topic to be resolved. It is difficult for a nuclear power plant utility to resolve this topic and get a technical solution in particular for operating nuclear power plants because a vulnerability test can give adverse effects to the plants. This is the reason why a test-bed should be needed. This paper...
Review of main approaches of gas consumption prognosis and analysis models is given here. Most of them are long-term prognosis methods, which take into account some weather conditions (mostly temperature as most significant one), few short-term methods works only for non-heating period. Unlike the existing methods, new approach gives a possibility to analyze and calculate prognosis values of gas consumption...
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