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Our analysis used the monthly data of the average sales price of commodity houses and stock turnover in the Shenzhen Stock Exchange from January 2016 to December 2020. We selected this data to establish a Vector Autoregression (VAR) model using the Granger causality test to investigate the correlation between the stock market and the real estate market. We found that there is a significant positive correlation between the stock market and the real estate market. We also found that the real estate market price is the one-way Granger cause for the stock market turnover, and that changes in the real estate market price have a significant role in forecasting changes in stock market turnover. Therefore, the linkage between the two markets should be considered in macro regulations, and the impact on one of the markets should be considered when regulating the other

Sichuan Academy of Social Sciences

[Objectives] To reduce the thermal wake of submarine during snorkeling,[Methods] a two-stage cooling method is proposed,which can suppress the infrared radiation of high-temperature exhaust gas under water; and then the water surface temperature fields before and after infrared suppression are analyzed on the basis of the finite element fluid analysis method;and finally,an underwater exhaust gas experiment platform is built on the basis of the preliminary data obtained by simulation,so as to test the infrared radiation brightness of water surface and the temperature of underwater section before and after infrared suppression.[Results] The results show that the two-stage cooling measure has an excellent infrared suppression effect on the high-temperature exhaust gas of diesel engine,and the maximum infrared brightness of the water surface can be reduced by 90%.[Conclusions] This method has a good engineering application value and military significance for the improvement of submarine's concealment.