查询词典 linear optimization

The course is a comprehensive introduction to the theory, algorithms and applications of integer optimization and is organized in four parts: formulations and relaxations, algebra and geometry of integer optimization, algorithms for integer optimization, and extensions of integer optimization.

本课程对整数最优化的理论、算法和应用做了全面的介绍。课程分为四部分：公式和松弛、整数最优化的代数学和几何学、整数最优化的算法，以及整数最优化的拓展。

The main works include five parts:(1) A modified K-means algorithm for optimizing the RBPNNs' structures was proposed;(2) The RBPNNs' structure optimization method based on the orthogonal least square algorithm was proposed that can greatly reduce the computation expense for the structure optimization;(3) Using the GA to perform the whole structure optimization of the RBPNNs was proposed in this thesis, which include simultaneous optimization of the hidden centers and the corresponding controlling parameters of the kernel functions.

主要工作体现在如下三个方面：(1)提出一种改进的 K-Means 算法；(2)提出了基于递推正交最小二乘算法的结构优化算法来训练径向基概率神经网络，从而大大减小了用于结构优化的计算开销；(3)提出使用遗传算法来实现径向基概率神经网络的全结构优化，即隐中心矢量和核函数控制参数同时优化，通过新设计的编码方式、新构造的适应度函数，充分发挥了 GA 的全局搜索性能，使得所优化的径向基概率神经网络的结构趋于最简。

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。

To analyze quantitatively the performances of genetic algorithms used in aerodynamic optimization design and the effects of the skills introduced, the numerical test planform for genetic optimization models is set up on Microsoft Fortran Powerstation. As applications, several aerodynamic optimization designs for airfoil, wing and aircraft are carried out to testify the adaptation of genetic optimization models.

建立了以Fortran Powerstation 4.0为开发环境的各种遗传优化模型的数值试验平台，对各遗传算法、改进技术及其优化模型的性能（优化质量和优化效率、可操作性）进行定量分析，并在此基础上建立了翼型、机翼和全机的优化设计软件系统。

The DHSPSO was applied to the high-dimensional optimization problems and simulation results showed that DHSPSO manifested better optimization results such as greater optimization speed, accuracy, and successfulness ratio of optimization.

以多个标准测试函数优化进行仿真测试，结果表明，DHSPSO算法在进行高维优化问题时，在寻优速度、精度和成功率等方面均显示出良好的优化效果。

So, based on research on agroforestry system and structure optimization technology, this paper gives a theoretical and quantifiable study on structure optimization of agroforestry system on scales of among or in land cell, aspects including selection of species, dimension optimization, topological structure optimization and evaluation.

为此，本文在综合国内外农林复合系统研究以及结构优化技术研究的基础上，在土地单元间和土地单元内两个尺度上，植物材料选择、尺寸结构优化、拓扑结构优化以及优化模式评价四个层次，对三峡库区的农林复合系统结构优化进行了理论以及定量研究。

This thesis investigates the profile extraction and shape optimization on the result of topology optimization of planar compliant mechanisms. The main context includes the following work:(1) summarizing and analyzing the recent research status, some harvest and unsolved problems;(2) analyzing the conceptual design of planar path-generating compliant mechanisms and its mathematical model and tools;(3) Modifying the method of density contour as the method of profile extraction, and developing a method to optimize the density function in the profile extraction according to the requirement of the design of compliant mechanism;(4) developing a method to abstract the compliant mechanism into a form of links and joints by using the principle of connectivity on topology;(5) developing a method of shape optimization of planar path-generating compliant mechanisms, by representing the profile of the abstracted compliant mechanism as simple curves such as straight lines and arcs, establishing the models of the size optimization of the parameters of these curves, so that the compliant mechanism has a machinable shape;(6) At last, proving the feasibleness and effectiveness of the design method by making simulation design and validating it in FEA software.

主要工作包括：(1)分析了柔顺机构拓扑优化和形状优化的研究现状，分析了目前柔顺机构的研究重点、主要成果和尚未解决的问题；(2)分析了基于SIMP的柔顺机构概念设计方法及其相关工具和模型；(3)针对柔顺机构轮廓提取的特殊要求，提出了密度等值线法的改进方案，对密度函数插值点密度值进行优化，提出优化模型和选择优化算法；(4)根据轨迹输出平面全柔顺机构自身的形状特点，提出了轨迹输出平面全柔顺机构的抽象方法，即应用拓扑学上的连通性原理将柔顺机构抽象成杆件和结点形式，并对相应的数学原理进行了证明；(5)提出了平面全柔顺机构的形状还原和尺寸优化方法，对抽象的柔顺机构进行还原，将其轮廓还原成简单曲线的连接，从而建立尺寸优化模型，对机构进行尺寸优化设计，在得到可加工的机构轮廓的同时又能对关键部位进行特别处理；(6)进行了柔顺机构的数值仿真设计，并将所得设计结果导入商用有限元软件中进行仿真实验，证明了设计方法的可行性和有效性。

Technical requirements and optimization strategies in designing wind turbine airfoils are discussed in this paper,and an optimization tool is developed. Researches on multi working points optimization for wind turbine airfoils with high lift-to-drag ratio are carried out.Simulation results show that the optimization strategy developed is of great use in wind turb...

论文综述了风力机翼型开发需求及其相关的优化算法，并且建立了专门用于风力机翼型开发的优化平台，通过采用CFD方法，进行了高升阻比风力机翼型多工况点优化开发的研究，结果表明，作者使用的方法可以完成新型风力机翼型优化设计。

A new method was developed for design of the composite material flywheel with high speed. In this paper ,the method of optimization of shape design for the composite material flywheel with high speed was put forward on the base of the analytical method and research optimization of shape design, and established the models of density optimization of energy and light mass.These models were used to design two typical composite flywheels with high speed in hybrid electrical vehicle flywheel battery and the stress level and convergence on the flywheel were got .Then a new way was developed for optimization of shape design of the composite material flywheel with high speed.

在此基础上对高速复合材料飞轮进行了形状优化设计，将复合材料有限元分析方法和优化设计技术相结合，提出了复合材料的形状优化的方法，分别建立了以高速复合材料飞轮的以储能密度最大为目标函数的形状优化模型和以质量最轻为设计目标的形状优化模型，并以混合动力客车飞轮电池中高速复合材料飞轮作为具体应用，使其在满足强度条件和几何约束条件下，分别寻求其最大储能密度和最轻质量，从而为高速复合材料飞轮的形状优化设计提供参考依据。

Based on the analytical results, this paper put forward its investigative preconditions: organizational members participate in cooperation with the condition of optimizing their personal objectives; optimization of organizational objectives must be based on its members'objective optimization; members'cooperative dedications under the condition of their own objective optimization are resource restrictions of their organizational objective optimization.

根据分析结论提出了本文的研究前提：成员以个人目标优化为条件参与组织合作，组织目标优化受到成员目标优化的制约，即组织成员在个人目标优化条件下的合作投入是组织目标优化的资源约束。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。