优

Optimal consumption and investment ; stochastic volatility ; stochastic optimal control ; value function

最优消费和投资；随机方差；随机最优控制；值函数

By exploring the properties of the optimal value function, several simple and realistic sub-optimal policies are presented.These sub-optimal policies are of threshold structure, which are featured only by a number of threshold parameters.

分析了生产两种品种的纸机的最优策略的结构品质，提出了一种简易可行的次优控制策略：阈值控制策略。

Operations research ; batchselling ; optimal strategy ; optimal revenue value function

运筹学；分批销售；最优策略；最优收益值函数

Firstly,the mixed-integer bi-level programming is transformed into a single level continuous optimization problem by virtue of penalty function concept and optimal value function tool.

利用罚函数思想和最优值函数的概念将混合整数双层规划转化为连续变量的单层非线性规划，然后用事先确定步长的凸组合算法迭代求解此单层非线性规划，进而得到原双层规划的局部最优解

Furthermore, buckling effect factors and their influence law are exploited. Finally, combining the character of piles foundation with high bridge piers with engineering practice, four optimal mathematic models are proposed and flow diagram of optimization analysis is fulfilled by the computer optimum program. A numerical example is analyzed to get optimal solution by using this program. Meanwhile based on the optimal model with buckling coefficient as the objective function, parameter variables are discussed about their effect rule toward the optimal value of objective function.

最后，针对高桥墩桩基础的特点，在基本优化模型的基础上，根据不同的目标函数建立了相应的优化模型，给出优化设计算法流程图，编制了相应的优化计算程序；并根据高桥墩桩基的工程实际设计了一个数值算例，采用本文编制的优化计算程序对该结构进行优化，得到了优化后的最优解；同时，采用高桥墩桩基屈曲系数作为目标函数的优化模型进行因素分析，初步探讨了参数变量对目标函数最优值的影响规律和程度。

Dynamic program is to solve much phase the mathematical method of decision-making problem, it can divide the moving process of a certain system for a certain number of level, use principle of optimality to build basic equation, make target function is achieved best, seek an optimum solution.

动态规划是解决多阶段决策问题的数学方法，它可以将某个系统的运行过程分为若干个阶段，利用最优化原理建立基本方程，使目标函数达到最优，求出最优解。

With Markov optimality principle, the paper extends the existing models and discusses the optimal claim strategies of policyholders under these automobile insurance clauses.

本文应用马尔科夫最优化原理推广了汽车保险的最优索赔策略模型，并对我国现行的三个车险条款的最优索赔策略问题进行了实证研究。

Conceptually, we present the principle of optimality for defuzzification and the optimal defuzzification mapping; methodologically, we convert the problem of finding the optimal defuzzification mapping into the one of finding the optimal parameters, suggesting a specific method for its realization—POD method; operationally, we advance that the learning of the parameters for defuzzification can be realized by the learning process using extended Kalman filter.

在概念上，提出了解模糊的优化原理和最优解模糊映射；在方法上，将求最优解模糊映射问题转化为一个参数优化问题，并提出了一个具体实现方法——POD方法；在实际操作上，我们提出可用基于增广Kalman滤波的参数学习算法来完成解模糊过程参数的学习。

The goal is to find an optimal allocation where optimality is defined by some problem dependent objective.

目标是找到一个最优的安排，最优性由依赖于问题的目标函数所定义。

I would say none, of course, because though we may be playing optimally, we are not THINKING optimally.

我认为没人可以，因为就算我们的打法是最优的，但是我们不能做到思想也最优。

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。