最优化

How to establish the adjoint medel is discussed by using the Gateaux differential of function and the concepts of the adjoint operators in Hibert space. At the same time it is verified that selecting proper finite difference scheme can ensure discrete form remaining the same adjoint r...

文中利用泛函的Gateaux微分和Hilbert空间上伴随算子的概念讨论了连续的伴随模型的建立，并通过选择适当的差分格式离散伴随模型，使其保持连续时的伴随关系，同时给出了水温初始场最优化过程及相应的同化试验数值结果。

Spectral methods and the classical Crank-Nicolson scheme are applied to deduce the full discrete system for the continuous model, then the variational adjoint assimilation approach is used to derive the gradient and the corresponding adjoint system.

从这个全离散问题出发，结合全局或局部已知的观测数据，分别构造梯度下降算法求解相应的最优化问题。我们分析了采用不同方法计算梯度所需的代价，另外，还给出一种选择最优迭代步长的算法。

Through conducting research on the classification of high density drilling fluid, the optimal grain distribution of adulterant is determined using the density-grain-viscosity curve.

对高密度钻井液进行了分类，以密度－粒度－黏度曲线确定了最优化加重剂粒度分布，通过优化基浆配制工艺、优选强抑制钻井液体系、优化加重剂与钻井液的粒度分布研究，应用超微细、亚微态粒子稳定技术，强化固相控制，形成一套优化的高密度阳离子钻井液技术工艺。

A detection method of the inima and adventitia edges of sequential IVUS simulated images is proposed by means of their statistical features.

它基于活动轮廓模型、IVUS图像的对比度特征和瑞利统计分布特性，通过采用动态规划和启发式图搜索的方法，对图像边缘进行了最优化的提取。

Based on the condition of the road-region ecosystem and the problem of ecological afforest in China in terms of the balance of ecosystem and the environment protection, three basic principles were put forward for the construction of the mad-area ecosystem, i.e.

针对我国高速公路路域生态系统环境状况、生态绿化存在的问题，从生态系统平衡和生态环境保护的角度，提出了路域生态系统建设的三大基本原则，即整体性、最优化和可持续发展原则。

A new method has been studied that the trace Pd in ammine medium catalyzes the discoloring reaction between indigo carmine and potassium periodate.

发现痕量钯在氨性介质中能催化高碘酸钾与能红之间的褪色反应，研究了反应最优化条件和动力学参数。

Results Establish the optimized condition of SDE in amphetamine analysis.

结果经实验研究，建立了SDE最优化方法。

Optimizing the Company's use of its real estate assets to improve ancillary revenue, such as condominium sales and restaurant, beverage and parking revenue from the Company's hotels and resorts

使集团对其房地产所有权的使用最优化，从而增加副收入，如集团饭店、度假村里私人公寓的销售，餐馆、酒吧和停车场的经营所得。

This dissertation deals with theoretical and practical aspects of antithetic and common random numbers for variance reduction in simulation of stochastic systems.

本文对复杂系统仿真中的公共随机数和对偶变量法进行了系统的论述，给出了各种条件下实现方差衰减的理论和实验结果，给出了估计一对具有独立和相关分量的向量函数的响应和期望的最优化证明，且推导出在弱条件下的方差衰减。

Methods The relationship of dynamic model′s input and output was analyzed and a basic structure of system identification model based on the principle of optimization in model reduction and the property of a function approximator to be composed of feed-forward networks was presented.

分析了控制系统动态模型的输入、输出关系，依据模型等效的最优化原理和神经网络任意逼近有限不连续函数的性质，提出神经网络辨识模型的基本结构。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。