查询词典 constrained optimization

A sensitivity analysis of adjoint method is presented to analyze the topology optimization problems. Meanwhile, the globally convergent version of the method of moving asymptotes is used in the optimization algorithm.

提出了适用于微型柔性机构多目标拓扑优化设计的伴随矩阵敏度分析方法，并将广义收敛移动渐进算法用于多目标多约束微型柔性机构拓扑优化问题的求解。

The character of this new method is that the mechanism of the GA is not changed but the search space and the coefficient of the adjustment of th e optimization parameter are reduced continually, which leads to generation evolution to the next generation in order to produce better optimization indivi duals so as to improve the performance of the GA and get over the disadvantage o f the GA.

提出一种新的混合算法--变尺度混沌遗传算法，该算法把遗传算法和混沌算法混合在一起，在不改变GA搜索机制的同时，根据搜索进程，不断缩小优化变量的搜索空间及调节系数，引导种群进行新一轮进化，从而产生更优的最优个体，改善了GA的性能，有效地克服了GA存在的问题。

Recently, topology optimization is the most challenging and hot, as well as difficult research topic in structure optimization.

拓扑优化是近年来结构优化研究领域中的前沿课题和热点问题，也是结构优化中的重点和难点。

When asked what Internet marketing objectives they did not achieve in 2007 and would like to focus on in 2008, the highest percentage of hoteliers (44.23%) said website optimization, followed by search optimization organic search (39.54%).

当问到什么是他们2007年没有达到、并将在2008年中努力实现的网络营销目标时，最多的酒店业主（44.23％）说是网站优化，其次是搜索优化即有机搜索（39.54％）。

To improve the performance of TD-SCDMA network significantly, the optimization on baton handover is necessary, and the research on optimization can provide technical support for its impelling in the commercial stage. In this paper, the processes and the algorithms of baton handover are introduced and the parameters which affect the handover performance are analyzed (such as filter coefficient, the hysteresis of baton handover, cell individual offset) in detail firstly.

本文首先论述了TD-SCDMA系统中现行接力切换的基本原理及切换算法，对影响接力切换性能的参数(如滤波系数、切换迟滞、小区个性偏置等)进行了理论分析，并根据实际测试结果，验证了切换参数对切换性能的影响，同时分析了目前接力切换中存在的问题，如街角效应、高速用户切换时掉话严重等。

Three optimization algorithms such as linear programming, complex algorithm and genetic algorithm, corresponding to three kinds of models were used to solve the optimization problem according.

针对装置不同的数学模型我们分别采用线性规划、复合形调优法、遗传算法作为优化方法，又对复合形调优法、遗传算法进行了相应的改进得到了相应的计算结果。

Considering the problems in existing studiers,we will study the optimization from two aspects:1 the optimization of network structure of high speed passengers transportation system.

针对目前研究中的问题，本文从两方面展开研究：1高速客运网络构建相关优化问题研究。

The numerical results show that the optimization method is effective for optimization of plateshell structure with stiffeners,and it is easy to implement on a computer.

数值结果表明，该方法处理板壳加筋结构优化问题十分有效，而且容易在计算机上实现。

The numerical results show that the optimization method is effective for optimization of plate-shell structure with stiffeners, and it is easy to implement on a computer.

数值结果表明，该方法处理板壳加筋结构优化问题十分有效，而且容易在计算机上实现。

For one-dimension optimization problem, stage pressure ratio and flow angles at the stator trailing edges, solidities at the stator and rotor trailing edges are considered as design parameters, To demonstrate feasibility of the present method, a multiobjective optimization of a six-stage compressor design was performed for maximization of the overall isentropic efficiency and the total pressure ratio, It obtained dozens of reasonable and uniformly distributed Pareto-optimal solutions that outperformed the baseline design in both objectives.

对于一维优化问题，以某六级高压压气机为对象，选取各级的级压比和静子出口气流角以及转子、静子的稠度为变量，得到了几十个在两个目标上均优于初始设计的Pareto最优解。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。