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Lead-acid batteries are widely used in all walks of life, the State-of-Charge is the most important part of the battery management system. On account of the strong coupling, multivariable, nonlinear characteristics of the batteries, this paper adopts the LS-SVM method to predict remaining battery capacity. The nonlinear POLYnomial (POLY) kernel is employed to design the LS-SVM. Aiming at predigesting the hardware requirement of the LS-SVM application, this paper uses the deduced induction of the input vector to simplify the POLY kernel, greatly reducing the memory capacity of the practical application. At last, simulation on MATLAB was done to verify the validity of the proposed model, the simulation results show that the LS-SVM based on the simplified PLOY kernel is applicable to battery SOC estimation, and the estimation error can be controlled within 5%.

The large-scale models of core rock-fill dam were constructed firstly, and the model dams were vibrated on large shaking table. In this paper, the dynamic analysis methods of earth-rock fill dam were verified base on the results of large-scale shaking model test, including the equivalent linear analysis method base on equivalent linear visco-elastic model and the effective stress analysis method of earth-rock fill dam. Study results show that: the value of natural vibration frequency of model dam which was calculated though characteristic value method using maximum dynamic shear modulus is close to the value which obtained from shaking model test; the acceleration response of the model dam under earthquake were simulated well by the equivalent linear analysis method base on equivalent linear visco-elastic model, and the calculated acceleration response values of model dam are close to the experiment results; because the finite element method (FEM) base on continuum media theory can not well reflect the loosening phenomenon of soil in vibration, the calculated acceleration response values are lower than experiment results; the effective stress analysis method of earth-rock fill dam can consider the dissipation and diffusion of dynamic pore water pressure during earthquake, and the calculated acceleration response values of model dam are close to the experiment results when the reservoir before dam was full of water.

In this paper, we focuses on combustion characteristics of the mixed gas of methane/air in the ring porous medium burner using numerical simulating method. The influencing factors of combustion, such as different methane/air ratio, the velocity of flow and heat loss of internal and external wall, are discussed, and it is shown that the ring porous medium burners have some advantages different from straight or rectangular porous media burners. Due to annular asymmetric structure, the temperature distribution of ring porous media burners are more uniform, and are no unfavorable phenomena such as the local high temperature and the hot spots. The simulation results for annular porous medium provides important theoretical basis for the development of new porous medium burners.

For the flaw of safety evaluation system using safety factor as control index, seismic permanent deformation is used to evaluate the safety of earth rock fill dam. In this study, the seismic deformation of Zipingpu dam after Wenchuan earthquake is measured and analysis. The deformation in the middle of the riverbed on the crest is the largest. The deformation in the left dam abutment is smaller than that in the right. The seismic permanent deformation on the crest grows rapidly in the first three days, and then develops slowly. The results show that deformation grows along the height of dam with the relation of exponential or power function.