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Physical and mechanical parameters of marine sediment are correlated to sound velocity. At present, there is some deficiency in sound velocity prediction equation with the help of regression fitting method. So it is difficult to obtain sound velocity prediction equation with more than three parameters. This paper applies artificial intelligent method to build a neural network model of multi-parameter...
In this paper, with the data of the 226 companies listed on Shanghai security exchange and Shenzhen security exchange during sample period between January 2006 and September 2008, the effects of company owner's retention and lockup on underpricing are investigated by using the multivariate regression model. The regression results show that the share retention and lockup ratio is positively correlated...
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