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An electronic tongue was used to monitor the quality change of fresh coconut milk at room temperature, and the data were analyzed by principal component analysis, cluster analysis and similarity analysis. Results showed that the quality of fresh coconut milk significantly changed within 2–3 and 7–8 h, and that the change occurred more markedly within 2–3 h. Important quality indices of fresh coconut...
The parameters of deep mine roadway surrounding rock are very important to the design, construction and stability analysis of the mine roadways. Now there are some shortcomings in the methods to obtain them. It is believed that displacement back analysis method can solve the problems, but there are some defects in it. Aiming at these problems, the paper builds a network of intelligent displacement...
In this paper, BP neural network's powerful non-linear fitting ability is applied to establish the non-linear relationship between tunnel surrounding rock stability and its influencing factors. Tunnel surrounding rock stability classification intelligent method based on BP NN is built and is used to surrounding rock stability classification of FuXi tunnel of Tongling-Huangshan highway in Anhui province...
Enclosure structure deformation induced by foundation pit excavation is one of important problems in foundation pit engineering. The factors influencing the enclosure structure deformation are complex and have stochastic and fuzzy properties, which have brought difficulties to the enclosure structure deformation prediction. The traditional methods are obviously inadequate while being used to predict...
Surface settlement will take place while foundation pit building and it is one of important problems in foundation pit engineering. The influencing factors are complex and there are stochastic and fuzzy properties in them, which have brought difficulties to the ground settlement predication. The traditional methods are inadequate when they are used to analyze and predict the surface settlement. In...
The slope stability's influencing factors are complex and there are stochastic and fuzzy properties in them, which have brought many difficulties to the slop stability analysis. The traditional methods are inadequate when they are used to carry on slope stability analysis. In this paper, the intelligent slope stability analysis method has been established and can be used to solve these problems. Practices...
In this paper, we analysis the average packet delay on IEEE 802.11 DCF under unsaturation traffic in multi-hop ad hoc networks. We employ a Markov chain model to analysis the probability of transmission at each node in an arbitrary slot, and derive the channel access delay. We model each node using an M/G/1 queue and derive the queueing delay. The model is extended from analyzing the single-hop average...
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