The updating problems of structure models are turned into the optimization with a quadratic constraint.

该方法将模型修正问题转化为一个带二次约束的最优化问题。

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Visco-elastic materials are often used for structure models in dynamic test, but it's effect in Modelling is questionable.

粘弹性材料在动态结构模型试验中应用已久，但其模拟效果至今仍有争论。

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In this paper, several GIS vector data structure models are analyzed and discussed deeply, also their adaptability on PDA are pointed out.

基于掌上电脑，对几种GIS矢量数据组织模型进行了分析和深入讨论，指出了其在掌上电脑上的适应性。

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Here are a few practical thoughts on two asset-centric corporate structure models to platform and product plays.

FORBES: New Biotech Corporate Structures: Possible Alternatives For Discovery Platforms and Product Financings

Beyond company size and structure, SME business models will also be impacted as 'big data' gets even bigger.

BBC: Cheap technology helps small business grow big

At the same time there would be an increase in non-traditional models of family structure and increased reliance on members of the wider family for childcare.

BBC: 'End of nuclear family' forecast