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约束优化

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The results show that there are optimal damping coefficient leading to the minimum response of the primary core-tube, and that the dynamic response is not sensitive to the lesser damper stiffness, and that the optimal value affected by inter-story drift ratio of the suspended floors as constraint condition and setting reasonable structural parameters could meet the optimization objectives and the inter-story drift ratio limit of the suspended floors.

结果表明:存在最优阻尼器的阻尼系数,使得主体核筒的响应最小;当阻尼器的刚度较小时,可以忽略其对结构动力响应的影响;悬挂楼面的层间位移角作为约束条件,影响结构参数的优化值;通过设置合理的参数才能够同时满足优化目标和悬挂楼面的层间位移角限值。

Based on the full three-dimensional numerical simulation for the centrifugal pump, an optimal mathematical model of blade curve is set up. In this model, the object function is the minimum length of the blade curve; the constraint condition is no recirculation atr=0.5. This model makes the design of optimum blade curve efficient.

在对离心泵内部流场进行全三维数值模拟的基础上,建立了叶片型线优化设计的数学模型以叶片长度最短为目标函数,叶轮相对半径,r=0.5处无回流为约束条件,讨论了该模型优化计算的方法。

This paper presents an efficient optimization algorithm and complicated code for Airciraft Landing Scheduling Problem,Based on Depth-first-search implicit emumeration algorithm,subject to MPS limiting,position lock limiting and optimization depth limiting.

以深度优先搜索的隐枚举算法为基础,结合 MPS约束、位置冻结限制、优化深度限制,使用复杂的软件编码实现了特定于飞机着陆调度问题的优化排序算法。

An optimization model was established for identifying the soil hydraulic properties. The optimization objective was the minimum mean square deviation of simulation between measured and observed values of soil water content, and the constraint conditions were the upper and lower limit values of empirical soil hydraulic conductivity and water diffusion coefficients.

该文以反映土壤含水率实测值和计算值吻合程度的均方差最小为优化目标,以土壤导水率和扩散率经验参数上下限为约束条件,建立了土壤水分运动参数识别的优化计算模型。

In this paper , an efficient optimality criterion method is developed for the mini-mum weight design of WF I-section frames with constraints on stresses, displacements, local buckling and cross-sectional dimensions.

本文利用优化准则法解刚架结构优化设计问题,可以处理工程上常用的宽缘工字梁型剖面结构在应力、位移、板局部稳定性和几何约束条件下的最小重量设计。

The nonlinear simplx method with punish function are used to optimize the Osculating -Cone waverider with lift-to-drag ratio as the objective function and volumetric efficiency .length as limitation.

进一步的优化过程采用结合惩罚函数的单纯形法对吻切锥乘波机以升阻比最大为目标、以容积效率、长度为约束条件进行了乘波机构型优化,生成了更为适合应用的乘波机外形。

The synthetic punitive function combining internal point and outer point, and Powell optimal techniques are used in the control system to find the optimal point of the objective function among the real conditions. The AOCPF package has run for about one week in the semiselective flotation circuit of this plant.

为了在约束条件规定的现实范围内找到目标函数的最佳点,作者将内点法与外点法相结合的混合罚函数法、Powell优化方法引入了浮选过程的自适应优化控制。

Based on modern optimization theory and optimal control theory, this dissertation studies some questions as follows:1. The optimization model of parameter identification of three-dimensional geologic history numerical simulation, algorithm and its applicationGeologic history numerical simulation is a basic content of basin numerical simulation, and the porosity is the major parameter in the evolution and development process of oil-bearing basin. According to the sedimentation and burial mechanism, the physical and chemical principles of oil geology, the mudstone porositys non-linear parabolic partial differential equation has been established.

本文应用现代最优化及最优控制理论,对如下一些问题进行了研究: 1、三维地史数值模拟的参数辨识优化模型、算法及应用地史模拟是盆地数值模拟的一个基础性的研究内容,地层孔隙度是含油气盆地地史演化发育过程中的重要参数,根据地层沉积埋藏机理和石油地质的物理化学原理,通过引入数学物理方程概念,建立了泥岩三维孔隙度场方程,根据问题的特点,给出了方程的定解条件,对方程的动边界也给出了处理方法,并且证明了解的存在性与惟一性,在此基础上建立了以当今实测数据为拟合准则的三维地史数值模拟的参数辨识优化模型,这是一个含有二阶偏微分方程约束的泛函极值问题。

However, conventional design, crash simulation and experiment can only improve the structural crashworthiness to some extent, which can not assess the reliability of design parameters and the robust of objective function, at the same time, nor achieve a global optimization performance subjected to the preassigned probabilistie constraints.

耐撞性的优化涉及材料与结构的众多参数,传统的确定性优化设计、碰撞仿真及实验往往只能在一定程度上改善结构的碰撞性能,而无法评估设计参数的可靠性和目标函数的鲁棒性,以及在给定可靠性约束条件下使目标函数的鲁棒性达到最优状态。

At last, it sets forth countermeasure suggestions: scenically making the comprehensive plan of state-owned property recombine; making the macroscopic circumstance of state-owned property recombine; developing and regulating market-middle -agency; perfecting related policies and legal system; making the outside circumstance good, establishing and perfecting social ensuring system; establishing the inspiring and controlling mechanism, and promoting enterprises to establish modern enterprise system; establishing and perfecting the modern system of property right; preventing the loss of state-owned property.

最后,重点探讨了国有企业资产重组顺利有效发展的对策建议:科学制定国企资产重组的总体规划;优化国企资产重组的宏观环境;发展和规范市场中介机构;健全相关政策法规,完善市场法制体系;优化外部环境,建立健全社会保障体系;建立经营者激励和约束机制,推进企业建立现代企业制度;建立健全现代产权制度;防止国有资产流失。

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What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢?

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我,一个心中布满虚荣的女孩子真实的想法。

Oh, and I bought myself a new laptop," he said."

哦,我还给我自己买了一个新笔记本"他说。"