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Researches show that students learn better when they are actively engaged in the learning process. Therefore, the idea of motivating students into learning by setting challenges, problems and goals has received increasing attention recently. This inquiry learning educational method helps to cultivate all-round developed students. This paper probes into constructing a more interesting and efficient...
A novel approach to HVAC fan machinery fault diagnosis based on combination of artificial neuron network and D-S evidence theory is presented in this paper. Firstly, the system pre-processes the acquisition data from multi sensor, then makes pattern classifies observations based on BP neural network. Secondly, the output values of BPNN are directly taken as the basic probability assignment of the...
Preventive maintenance plays a very important role in the modern Heating, Ventilation and Air Conditioning (HVAC) systems for guaranteeing the thermal comfort, energy saving and reliability. The fault diagnosis on HVAC system is a difficult problem due to the complex structure of the HVAC and the presence of multi-excite sources. As the HVAC system fault information has inaccurate and uncertainty...
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