The effects of structural dip are also accounted in the constraint conditions. Wave impedance is calculated using simulated annealing algorithm on seismic data under constraints of geological rules.

在约束条件中加入构造倾角的影响，借助于模拟退火算法，在地质规律的约束下利用地震资料求取地层波阻抗。

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Regardless of the economic dip, however, several career paths have been declining for years due to larger structural changes in the economy.

FORBES: Jobs Outlook: Careers Headed For The Trash Pile