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Aqueducts are watercourses constructed to convey drinking water to the people lives in the cities. In order to provide a safe and reliable supply of water and to improve the long-term sustainability of city water infrastructure, the city water authority will periodically request an aqueduct inspection and condition assessment as a proactive approach to identify and repair high-risk pipes in order...
With the ubiquity of mobile appliances, efficient wireless access has become an urgent need for mobile users. Efficient wireless access requires accurate radio signal maps. Unfortunately, most of solutions could not be applied to large-scale urban space. Crowdsensing schemes could leverage the smartphone to sense WiFi signals, but could not provide accurate map because of the intolerable noises in...
This paper addresses the problem of joint optimization of subchannel selection and spectrum sensing time for multiband cognitive radio networks. In particular, we construct a multiband spectrum sensing framework, and derive the probabilities of detection and false alarm taking the different subchannel gain into account. Furthermore, we formulate the multiband sensing as a two-parameter optimization...
Spectrum sensing is one of the most important technologies for cognitive radio. In order to decrease the effect of low SNR, and increase the reliability spectrum sensing performance, we propose a novel spectrum sensing approach, which collects the distributed collaborative beamforming signals as the test statistic to input the energy detector. In particular, the collaborative beamforming method can...
For a groundwater source heat pump (GWHP) system, how to realize system high efficiency operation is very important issue. On basis of development idea of modular and open energy management, a model of non-energy-saving (NES) fault diagnosis has been presented, the model involves input of basic characteristic data and index characteristic data and output of NES fault factors, the relationship database...
To solve the high accuracy fuel measurement problem in aeronautic application, a new type fuel sensor based on the theory of magnetostrictive is presented. The framework structure design of the sensor is discussed. Considering the difficult problems in aeronautic application environment, special structure for key parts of the sensor and efficiency detecting device is designed, and the optimization...
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