Artificial damping boundary is adopted in seismic model test of arch dam on shaking table to simulate the radiation damping effect due to energy dissipation in infinitive foundation.
在振动台上进行拱坝动力模型试验时，设置人工阻尼边界，以模拟地震时地震动能量向无限远域地基逸散的地基幅射阻尼效应。
High-level ARCH effect is certification in the BDI logarithm process by ARCH LM test, GARCH(1,1)model is used to eliminate the conditional heteroscedasticity.
通过ARCH LM检验认为BD I对数序列存在高阶ARCH效应，并用GARCH（1，1）模型消除残差序列的条件异方差性。
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