查询词典 optimization problem

Furthermore, the first-order optimality condition and its equivalent reformulations for generalized semi-infinite max-min programming with a non-compact set are presented using the lower-Hadamard directional derivative and subdifferential.2. Chapter 3 studies the gradient-type methods for unconstrained optimization problems. Section 1 proposes a new class of three-term memory gradient methods. The global convergence property of the method is established. Furthermore, in order to improve the convergence property of the method, a new class of memory gradient projection methods is presented with the property that the whole sequence of iterates converges to a solution to the problem under the conditions such as pseudo-convexity and continuous differentiability of objective function. In section 2, two new classes of methods, called gradient-type method with perturbations and hybrid projection method with perturbations, are proposed. In these methods, non-monotone line search technique is employed, which makes them easily executed in computer.

第3章研究了无约束优化问题的梯度型算法，第1节提出了一类新的三项记忆梯度算法，讨论了算法的全局收敛性，进一步提出了一类新的具有更好收敛性质的记忆梯度投影算法，并证明了该算法在函数伪凸的情况下具有整体收敛性，第2节在非单调步长搜索下提出了带扰动项的梯度型算法及其混合投影算法，这两类算法的一个重要特征就是步长采用线搜索确定而不象许多文献中那样要求步长趋于零，这样更容易在计算机上实现，在较弱的条件下证明了这些算法的全局收敛性，数值算例表明了算法的有效性。

As to problem of time varying delay existing in NCSs, a time-varying model including certain system and uncertain system are constructed firstly, and then stability and stabilization of these systems are discussed based on time-delay system theory, cone convex optimization theory and free weighting matrices approach. Conditions of time-dependent stability and stabilization with less conservative are given in the form of linear matrix inequalities.

针对网络时滞问题建立了时变时滞NCSs的模型(包括确定系统和不确定系统)，然后利用时滞系统理论、锥补线性化方法和自由权矩阵方法研究了NCSs的稳定性和镇定性问题，并基于LMIs形式给出具有较小保守性的时滞相关稳定和镇定条件。

A mathematic model of topology problem is built, sensitivity analyzed and Convex Linearization method used for optimization solution.

建立了拓扑优化问题的数学模型，进行了灵敏度分析，采用CONLIN算法进行优化迭代求解，并介绍了消除数值不稳定现象棋盘格的方法。

In addition,the authors propose that for a multi peaked one dimensional search problem its optimum solution can be obtained by ordinary optimization methods only when the convexity or concavity of the objective function matches the step length determining the one dimensional search region and the method of finding the optimum step length factor.

另外 ，还提出了对于多峰一维搜索问题，只有当所求函数的凹凸性与确定一维搜索区问题的步长以及求解最优步长因子的方法匹配时，才能用一般方法得到搜索区间内的最优解

Basing on learning from the advanced cost experience of national and international bank, coring activity costs、product costs and customer costs of ICBC xuzhou Branch, leading activity costs of management and activity optimization, this thesis particular analysis the existing operation of ICBC xuzhou branch, find out the problem and the resolving with Activity-Based Management and Cost-Volume-Profit analysis.

本文在借鉴国内外银行先进成本管理经验的基础上，运用作业成本管理理论和量本利等相关的分析方法，以徐州市工商银行作业成本、产品成本和客户成本三个要素为核心，以作业成本管理和作业优化为导线，通过全面、全程和全方位的研究，对徐州市工商银行经营成本管理现状，进行了全面、具体的分析，并找出相关的问题和解决的办法。

Packing problem ; packing objective ; heuristic algorithm ; local optimization ; group ; space decomposition

布局问题；布局目标；启发式方法；局部寻优；群组；空间分解

This paper applies self-adapting operator and local degeneracy operator to optimization layout of water pollution control system of Fujiang river in Mianyang city against problem mentioned above.

针对上述问题，在对涪江绵阳段水环境概况进行分析和评价的基础上，本文引入了自适应算子和局部退化算子，对涪江绵阳城区段的污水控制系统进行了优化布局，并与传统规划方法——试探分解法的规划结果进行了比较。

The method of optimization is a problem deserving of study.

优选法是一个值得研究的问题。不适合

Because of the multimodal of the solution of the inverse problem, traditional deterministic optimization algorithm is often useless to solve this kind of problems.

由于逆问题的解具有多峰值性，传统的确定类优化算法很难实现逆问题的求解。

The concept of synchronization and several kinds of classical synchronization method are given, then the parameter identification process of chaotic system based on adaptive synchronization is given. Parameter identification problem can be converted into optimization with a given index function. Finally the paper explains the whole process with discrete Henon system and continuous Lorenz system.

首先，介绍了同步的定义和几种经典的同步的方法，说明了基于自适应控制方法的混沌系统参数辨识过程，并把参数辨识问题转化为对性能指标的优化问题。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。