in this paper, a model based on gmdh type neural network, is used to predict gas price in the spot market while using oil spot market price, gas spot market price, gas future market price, oil future market price and average temperature of the weather. the results suggest that gmdh neural network model, according to the root mean squared error (rmse) and direction statistics (dstat) statistics ...

The accurate modeling of the fast-fill dynamics occurring in Compressed Natural Gas (CNG) fueled vehicle storage cylinders is a complex process and to date those dynamics have not been thoroughly studied. Here, based on first law of thermodynamics, conversation of mass and thermodynamics properties table a numerical method has been developed to study fast filling process of natural gas vehicle’...