查询词典 optimum control

The dynamic optimum design of shafting is carried out through utilizing the optimum design theory and selecting genetic algorithms.

最后运用优化设计理论并选择遗传算法对轴系进行了动态优化设计。

The backward heuristic search algorithm BHAO for general AND/OR graphs is presented, in terms of newly-defined heuristic function h and the principle that every subtree of the optimum solution tree is also optimum solution one.

根据新定义的启发式函数h以及广义AND／OR图的最佳解树之所有子树亦是最佳子解树的原理，提出了广义AND／OR图的自底向上的启发式搜索算法BHAO。

The results showed that when the concentration of surfactant and metal ions (Cd2+) in the feed solution were 500 mg·L-1 and 10 mg·L-1,optimum conditions were air and liquid flow rates 100 L·h-1 and 5 L·h-1, liquid-and vapor-phase heights 45 cm and 66 cm,respectively,sparger (pore size 10 μm). Under the optimum conditions,the about 52% SDS and 99.35% Cd2+ were removed.

实验结果表明，当胶团强化超滤废水中初始SDS和Cd2+的浓度为1440 mg·L-1和50 mg·L-1时，排出的渗透液中含SDS和Cd2+浓度分别为500 mg·L-1和10 mg·L-1，在最佳的工艺条件下（曝气头孔径为10μm，空气流速为100L·h-1，液体流速为5L·h-1，泡沫高度为66cm，液面高度为45cm），SDS和Cd2+的去除率分别达52%和99.35%，SDS富集比为3.1。

The results show that the yield of compound 5 reached a maximum of 65% under the optimum reaction conditions, where the pH of the reaction medium was 3.8~4.0, the reaction temperature was 85~90 ℃, and the molar ratio of zinc powder to compound 1 was 2.6:1. The optimum oxidant for the selective oxidation of α-methyl on compound 5 was sulfuryl chloride, and the yield of the product was 52.5%.

结果表明，合成化合物5的最佳反应条件为：反应介质pH值为3.8~4.0，反应温度85~90℃，锌粉与反应物1之间的摩尔比2.6：1，产物收率达到65%；化合物5中α-甲基选择性氧化反应的最佳氧化剂为硫酰氯，产物收率达到52.5%。

By using the transfer matrix method of multibody system, the hard problem of computation of the vibration characteristics of LRMLRS coupled with rigid bodies and elastic bodies is solved which is very difficult to the ordinary dynamic methods, and the vibration characteristics of LRMLRS which is varied when the number of rockets in the launch device is varied, is obtained conveniently. By developing augmented eigenvectors of the LRMLRS and its orthogonality conditions, the nonorthogonality problem of the multibody system including rigid bodies and elastic bodies is solved and the exact analysis of the dynamics response of the LRMLRS including rigid bodies and elastic bodies is realized. By using the random integer programming method, the hard optimization problem which contains continuous variables, discrete variables and random variables at the same time is solved. This method provides a technology for optimum design with random variables and discrete variables. The dynamic optimum design is realized to decrease the number of rockets consumption in the LRMLRS test. The simulation system of dispersion of fire is established by using the maximum entropy method to estimate dispersion of fire.

通过应用多体系统传递矩阵法，解决了刚弹耦合远程多管火箭多体系统振动特性这一通常力学方法不便于解决的计算难题，方便地获得了远程多管火箭振动特性及其随发射架上火箭弹个数变化而变化的情况；通过构造增广特征矢量及其正交性条件，解决了刚弹耦合多体系统特征矢量不具有通常意义下的正交性的难题，实现了对刚弹耦合远程多管火箭动力响应的精确分析；应用随机整数规划法，解决了同时考虑连续、离散和随机变量等多种设计变量的优化设计难题，为含随机和离散变量的优化设计提供了手段，实现了减少远程多管火箭试验用弹量的动态优化设计；建立了应用最大熵法估计的密集度仿真系统，优化射序和射击间隔，实现了提高远程多管火箭射击密集度的动态优化。

The results indicated that CHCl3 was optimum reagent and the reaction temperature was better controlled at 10~15℃. Dinitrogen tetraoxide and nitric acidhad a detrimental effect on the yield and purity of 1,2-propanediol dinitrate. When the concentrations of dinitrogen tetroxide and nitric acid were below 1.00% and 5.53% respectively, these detrimental effects could be neglected. Under the optimum conditions, the yields and the purity of 1,2-propanediol dinitrate were 99.01% and 95.89%, respectively.

同时考察了反应溶剂、反应温度、N_2O_5中N_2O_4和HNO_3杂质对1，2-丙二醇二硝酸酯收率和纯度的影响，结果表明，适宜的溶剂是CHCl3；适宜的反应温度为10～15℃；在适宜条件下，1，2-丙二醇二硝酸酯的收率和纯度可分别达到99.01%和95.89%；N_2O_4和HNO_3对产物的收率和纯度均有不利影响，但当N_2O_5中N_2O_4含量小于1.00%，HNO_3含量小于5.53%时，对产物收率和纯度的影响不大。

But because of the local property of the similartaxis operation, the transition probability from a local optimum to the global optimum is very small.

但由于趋同操作的局部性，从局部最优状态转移到全局最优状态的概率非常小。

This paper is based on "Trilemma" which is induced from MF model. In order to overcome MF models inherent defects, this paper constructs a static model headed by government on choice of optimum exchange rate regime. Through the analysis of the model we can see that the choice of exchange rate regime is a dynamic process should be decided in real situation. No single exchange rate regime is right for all countries or at all time. Under certain condition intermediate regime may be the optimum one, but the possibility will decrease with the increase of international capital flow.

本文从蒙代尔——弗莱明模型精炼出的"三元悖论"出发，为了克服其内在的缺陷，构建了一个政府主导的静态最优汇率制度选择模型，模型分析表明：汇率制度选择是一个动态的相机决策过程，没有哪一种汇率制度对所有国家或某一国的所有时期都适合；在一定条件下，中间汇率制度可能是最优汇率制度，但是其可选择的区间随着资本流动程度的加大而缩小，最终最优汇率制度将内生的向两极分化。

The results showed that the high catch was mainly observed in 150-153°E, 160-161°E, 0°-2°S in 2007. The maximal catch was found in August, but the highest CPUE in February. With Kolmogorov-Smirnov two sample test methods, the most optimum surface temperature was 29.3-30. 1℃ and the optimum surface salinity 34.0-35.2. The maximal catch appeared at difference temperature of 11 ℃ between 0-200 m and

结果表明：鲣的高渔获量区域主要分布于150°~153°E、160°~161°E，0°~2°S的水域；2007年最高月产量和最高单网平均日产量的月份分别为8月和2月；通过K-S检验，2007年最适表层温度为29.3~30.1℃，最适表层盐度为34.0~35.2；0~200 m、50~200 m水层的垂直温差为11℃时，渔获量达到最大。

As a result of market failures of unpriced positive and negative side effects in land use, the private optimum land use pattern yielded by market theoretically may differ from the social optimum.

由于非价格的正负作用使市场失灵，土地使用中，理论上由市场产生的最佳使用值可能与社会所需的实际最佳值不同。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。