这些算法采用了有限元A-法和基于自然边界归化的非重叠型区域分解算法。

These algorithms are given by both the finite element A- method and the nonoverlapping domain decomposition method based on the natural boundary reduction.

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本文研究双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。

In this paper, we investigate the artificial boundary conditions and its numerical methods based on natural boundary reduction for hyperbolic initial boundary value problems.

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第一部分，研究无界外区域双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。

Part I, the artificial boundary condition and its numerical methods based on natural boundary reduction for hyperbolic initial boundary value problems on unbounded domains is studied.

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