Optimization of system reliability is a NP hard problem, and people can not find the precise method for result.

系统可靠性优化已被证明是一个NP完全问题，不存在精确的求解方法。

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One of the primary goals of reliability research is seeking the best method to enhance the system reliability. Reliability optimization can help to achieve this aim.

研究可靠性问题的主要目标之一是寻求最好的办法提高系统的可靠性，可靠性优化有助于实现这一目标。

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The methods of system reliability analysis and optimization for wing-box structures are studied in this paper.

本文研究了翼盒结构的可靠性分析及基于系统可靠性的结构优化设计方法。

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In the area of renewable and distributed energy resources, which are prone to extreme variability, members can leverage predictive and optimization technologies, increasing the accuracy of their forecasts to balance the supply and demand of electricity and take measures that ensure system reliability.

ENGADGET: IBM announces Smarter Energy Research Institute, aims to improve energy grids (video)