However,this paper holds that the tax-free feature of T-bonds is undermining its becoming the underlying benchmark for financial futures,as the gap in the yield rates of same-dated,yet different-rated,T-bonds in the cash bond market is too wide even for conversion factors to remove the tax-free factor effectively.

Based on the system energy balance,The author developed an energy analysis method which is used to derive the parameter-energy conversion factor to describe the fuel s chemical energy distribution between the material flows,heat flows and power flows.

Then,a missile attacking mode transform model was built based on finite state machine theory,and state transform factors are introduced to link the various modes in the missile s attacking process.

The inversion procedure of major digital model could stably converge if the depth transformation factor used to transform the space of electrode to depth is fixed; If a iterative coefficient is added to the formula used to adjust apparent resistivity, the calculated value will rapidly access to observation value, therefore the number of iteration is lowered.