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Based on powerful data analysis software Matlab platform to analyze the spatial variability of NH4+-N desorption in soil polluted by rare earth leaching, through the analysis of trend surface, we can know that: under different mass ratios of desorption agent and contaminated soil, the spatial distribution variability of NH4+-N in soil is significant, reacting the significant desorption effect of desorption...
Mathematical physics equation in describing pollutants migration and transformation in soil media commonly appears at the form of partial differential equations. The partial differential equation toolbox PDE contains solution module of non-equilibrium transport process of contaminants in non-saturated soil. Based on Matlab software platform, the paper completes the spatial variation trend of NO3--N...
In order to test the existence of systemic jump in returns in Chinese Stock Market, this paper estimated a multivariate stochastic volatility jump-diffusion model, which assumes that returns are affected by both systemic jumps and idiosyncratic jumps. Taking the 50 index of Shanghai and the stocks from different industries of the stock market as an example, through developing Markov Chain Monte Carlo...
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