优值

Methods The optimal concentrations of CarE and substrate, pH, temperature and reaction time of the reaction system, were determined by orthogonal matrix methods.

用正交试验方法研究酶液浓度、底物浓度、反应体系的pH值、反应温度、反应时间5个因素对德国小蠊CarE活性的影响，并从试验组合中选出最优的条件组合。

The results of decision-making that based on the two kinds of risk have both consistency and otherness.

在风险控制阶段，从采用生态措施进行减灾的角度出发，设计了种植制度和作物品种调整的三种减灾方案，并以可能性—概率风险值为依据、采用期望值准则进行了风险决策，对减灾方案的减灾效益进行了排序，选出了最优的减灾方案，并与基于传统概率的风险决策做了对比。

The value of the optimal depth is related with the depth of the overburden.

最优深度的取值取决于覆盖层的深度。

To fulfill the requirement of preliminary design,uniform design method is proposed to make parametric analysis and approximate optimization.

作为算例，对一个柱支承预应力扁网壳进行了参数分析，得到了网壳用钢量、变形和极限荷载系数与三个主要设计参数(单层部分材料设计应力折减系数、单层部分范围和预应力值)之间的近似函数关系，并找出了满足规范要求的各参数之间的较理想的最优水平组合。

In the computational methods of TPBVP, in order to reduce some difficulties involved in solving a TPBVP via adjoint variables, we discuss a direct method in which state and control variables are indirectly parameterized, The method employs a recently developed direct optimization technique that uses a piecewise polynomial representation for the state and control variables, thus converting the optimal control problem into a nonlinear programming problem, which can be solved numerically.

在数值解法中，为了减少解决两点边值问题共轭变量带来的困难，主要讨论了将状态变量和控制变量进行参数化的一种直接方法，这种方法采用了近段发展起来的使用分段的多项式来代替状态和控制变量的直接优化方法，然后最优控制问题就转化成可以用数值方法解决的非线性规划问题，使得迭代初值更加容易选取。

In the last chapter, we establish the Pontryagin\'s maximum principle for the time optimal control problems governed by 2-dimensional Boussinesq system.

在第五章，我们对2维Boussinesq方程的时间最优控制问题，给出了最大值原理。

Firstly the dimensionless planar motion model of SGKW was established;then the optimal control problem of shortest time coplanar hit orbit was transformed into two-point boundary value problem by means of Pontryagin maximum principle .

首先建立了SGKW的无量纲化平面运动模型，然后利用庞特里亚金极大值原理将时间最短共面打击轨道的最优控制问题转化为两点边值问题。

According to the requirement of a minimum-fuel-consumption, a method of coplanar hit orbit optimization design for SGKW was studied. The dimensionless planar motion model of SGKW was founded, and the optimal control problem of minimum-fuel-consumption coplanar hit orbit was derived into two-point-boundary-value problem according to Pontryagin maximum principle.

针对燃料最省要求，研究了SGKW共面打击轨道优化设计方法，建立了SGKW的无量纲化平面运动模型，利用庞特里亚金极大值原理将燃料最省共面打击轨道的最优控制问题转化为两点边值问题。

Then, the optimized weights are determined by the posterior probability of these samples.

最后，波束成形器的最优权值由这些样点的后验概率加权获取。

The correct ratio of identification in Logostic model and Probit model are both achieve a high level of 97.14%.

在最优判别临界值下，Logistic和Probit甄别模型的判别准确率均达到了97.14%的高水平。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。