提出了一个非线性规划的对称对偶模型，它统一了非线性规划中两类对称模型。
In the present paper, a type of higher order dual model is formulated for minimax fractional programming problem.
本文针对设置有对称斜腹杆的钢筋混凝土框架-桁架结构，运用非线性规划方法拟牛顿乘子法，对框架-桁架结构体系中斜撑的刚度进行优化。优化结果可供工程设计参考使用。
In this paper, a nonlinear planning method, quasi Newton multiplier method, is introduced for the optimization of the bracing stiffness in braced frame structures with symmetric bracings.
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