最优化

In this paper,a new method for estimating the global optimum value in a global optimization problem is proposed .

给出了一种全局最优化问题的全局最优值估计的新方法；该方法通过求一个非线性方程的根使目标函数值逐步减小，因此该方法具有下降算法特征。

In vector optimization one investigates optimal elements such as minimal, strongly minimal, properly minimal or weakly minimal elements of a nonempty subset of a partially ordered linear space.

前言在向量最优化中，人们研究偏序线性空间中非空子集的最优元，比如极小元，强极小元，真极小元或者弱极小元。

BACKGROUND: Injection molding can be used in producing a variety of orthotic devices of practical use in rehabilitation medicine. With its merits of convenient realization and stability, genetic algorism has found wide application in many fields, especially in machine learning, pattern recognition, intelligent control and optimization.

背景：塑料注塑成型技术可用于康复工程的多种实用矫形器中，遗传算法所表现出的易于实现及健壮性等特点，使它在许多领域，特别是近年来在机器学习、模式识别、智能控制和最优化等领域得到了广泛应用。

According to the characteristics of thedouble channel sequential scan inductivelycoupled plasma atomic emission spectrome-try,this paper cbose the mostsensitive emission lines and optimum channelfor thedetermination of trace elements ingamma grade ostracod shell samples,and op-timized all conditions.

本文从顺序扫描式双通道电感耦合等离子体原子发射光谱仪的特点出发，对微克级介形虫壳体样品中的低含量元素选择最灵敏谱线和最佳通道，对各项条件进行最优化。

The optimal degree of outbreeding remained the same in every 25-year generation since 1800, although the overall number of children from marriages of every degree of relatedness did drop gradually over time—an observation that accounts for part of Iceland's demographic transition, and which probably has a social explanation.

从19世纪开始，每25年一代的远交的最优化程度一直没变，尽管每一种亲缘程度的婚姻的子女总数量在随时间逐步下降――冰岛人口结构转化显而易见的一部分原因，另一部分解释来自社会学角度。

Using Iceland's genealogical records, which allow the degree of relatedness between husband and wife to be calculated with great precision, Dr Helgason showed the optimum degree of outbreeding (measured in terms of the number of children and grandchildren produced) lay somewhere between cousins of the third and fourth degrees.

家谱可以更精确的推算出夫妻之间血缘程度。借助于冰岛的家谱记录，Helgason博士展示出了远系繁殖的最优化程度介于第三代和第四代远亲之间。

The overall cost of the optimal structures is minimized and the resulting designs are compared.

最优化结构的总费用最小和最终的设计结果作比较得出。

In order to relieve urban traffic congestion and the supply-demand contradiction of oversaturated intersection group,based on the idea and method of system engineering,model oversaturated intersection group system which is composed of oversaturated intersection subsystem,through system function analyzing,identify the optimization object of system function,establish the optimization model of oversaturated intersection group,present solving strategy of the optimization model,achieve global optimization of oversaturated intersection group system.

为缓解城市交通拥堵以及过饱和交叉口群的交通供需矛盾，基于系统工程的思路和方法，构建了由过饱和交叉口子系统构成的过饱和交叉口群系统模型，并通过系统功能的分析，明确了系统功能的优化目标，建立了过饱和交叉口群系统优化数学模型，并提出了优化模型的求解策略，以实现过饱和交叉口群系统的全局最优化。

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。

In view of the problem of parametric optimization in a nonlinear control system,this paper presents a new simulating method of optimization to be combined with the theory of a nonlinear control system,optimization theory and genetic algorithm.

摘 要］本文针对非线性控制系统参数优化问题，结合非线性控制系统理论、最优化理论及遗传算法，提出了一种新的仿真优化方法。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新