查询词典 discrete optimization

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。

The optimizing fracturing design chiefly includes fractures parameter optimization of fracturing wells, the volume of pre-conditioning fluid and preflush, the optimization of pump parameter and program, the optimization of fracturing technology parameters (Optimizing various kinds of proppant, concentration, volume and program and the adding way to optimize the reasonable operation parameters so as to improve the fluid diversion in natural formation fractures and main fractures).

压裂优化设计主要包括压裂井裂缝参数优化；预处理液和前置液用量、泵注参数和程序的优化；压裂工艺参数优化(以提高地层天然裂缝和主裂缝导流能力为目标，优化各种支撑剂类型、浓度、用量和程序，以及加入方式等；优化合理的施工参数)。

A problem of cable force optimization of cable-stayed bridge is equated as a nonlinear implicit optimization model. In the mathematical model, the object function is minimizing summation of bending strain energy and axial strain energy, and the constrain conditions are nonlinear and related to reasonable finished dead state. The optimization model is solved by projection gradient method, fully considering all kinds geometric nonlinearity.

把超千米级斜拉桥的索力优化问题归结为非线性隐式优化的数学模型，以系统最小弯压应变能为目标，根据合理成桥状态指定各种非线性约束条件，利用投影梯度法进行优化问题的求解，求解过程中充分考虑了各种几何非线性的影响。

A theorem of the alternative for the generalized subconvexlike set-valued maps is established using the separation theorem of convex sets in a Banach spaces, the concept of weak Benson proper efficient elements for a vector optimization problem is introduced, and the optimality necessary and sufficient Lagrange conditions for a vector set-valued map constrained optimization problem with the weak Benson proper efficiency is developed, with which the optimality Lagrange conditions for a nonconvex vector top-base constrained optimization of set-valued maps with the Benson proper efficiency are obtained.

刘莹 ，刘三阳，盛宝怀运用凸集分离定理对广义锥次类凸集值映射建立了一种择一性定理。引入向量优化弱Benson真有效元的概念，对带约束的非凸向量集值优化问题建立了在弱Benson真有效意义下有效元应满足Lagrange乘子型的必要及充分条件，并用这一结果建立了多目标主从非凸向量集值优化在弱Benson真有效意义下最优解的Lagrange乘子型充要条件。

Firstly, the meanings of multi-objective and layered optimization is explained in detail and the steady-state optimization based on quadratic programming is presented to solve the multi-objective and layered optimization in the context of two-stage model predictive control formulation.

本文围绕预测控制的滚动优化特点，对预测控制中的若干问题进行了深入研究，在总结目前已有研究成果的基础上做出了有效的改进，提出了自己的创新点。

The meaning of multi-objective and layered optimization is explained in detail and the steady-state optimization based on quadratic programming is presented to solve the multi-objective and layered optimization in the context of two-stage model predictive control formulation.

详细阐述了复杂工业过程的多目标分层优化要求的含义，在预测控制两级分层结构的基础上提出了基于二次规划的定态优化有效求解方法。

Therefore, it is necessary to put forward fast and easy reanalysis methods of structure optimization so as to enhance the efficiency of structure optimization and speed up the optimization process, which is also one the main content of this dissertation.

因此，为了提高整个结构优化设计的效率，加快优化设计的进程，十分有必要研究快速而简便的拓扑优化重分析方法，这也是本文的主要研究内容。

The BGP-RCS framework is a feedback control system, which composes of four parts: egress selection optimization in static stage, egress selection optimization in dynamic stage, negotiation process between domains, and dynamic detection of traffic change to decide the occasion of optimization recomputation.

BGP-RCS框架是一个反馈控制系统，主要由BGP出口选择静态优化控制、BGP出口选择动态优化控制、相邻域协商和动态流量监测四部分构成。

The main research content is: Using the experimental of cutting force and roughness of high speed face milling cutter and high speed end milling cutter mill aluminium alloy and cast iron, analyze the rules of the high speed milling velocity, feed rate per tooth, milling depth and milling width to high speed processing. Use multiple linear regression method, set up surface roughness and the cutting force fluctuation models. Certify the regression model notability, and provide a reliable guarantee for the accuracy of function optimization. Based on the targets of productivity, manufacturing cost, surface roughness, cutting force fluctuation optimization model, according to research of the high speed milling parameters selecting restrict of work piece, machine, tool and safety, set up high speed milling parameters multi-object optimization system.

本文以已有的高速铣削机理及高速刀具技术研究成果为基础，结合高速铣削试验，进行了基于遗传算法的高速铣削参数优化研究与系统开发，主要的研究内容为：通过高速面铣刀和高速立铣刀加工铝合金和铸铁等材料的切削力和表面粗糙度试验，进行了铣削速度、每齿进给量、铣削深度和铣削宽度对高速铣削加工过程影响的研究；采用多元线形回归的方法，建立了切削力及其振幅和表面粗糙度模型，并对模型的显著性进行验证，为高速铣削参数优化模型的建立奠定了基础。

This paper divided bus network optimization into three parts to discuss: public transport demand forecast the short-range optimization mode of the bus network and the optimization technique of the current bus network.

本文结合具体项目的需要，在既有研究的基础上，对公交网络近期优化方法进行了研究。

Terry Norris of the Georgia Sheriffs' Association cites a man who was convicted of statutory rape two decades ago for having consensual sex with his high-school sweetheart, to whom he is now married.

来自佐治亚州治安联盟（the Georgia Sheriffs' Association）的Terry Norris举了个例子，一名男子因20年前与其高中女友发生了性关系而被处以强奸罪。

Orders and for local governments to carry out a land bank on a special insurance policy.

11命令和地方政府进行了土地储备的一个特殊的保险政策。