查询词典 constrained optimization

Applying the conjugate gradient method, an iterative algorithm is presented to solve the constrained matrix equation AXB+CXD=F over centrosymmetric matrix X and its optimal approximation.

应用共轭梯度思想，给出了求解约束矩阵方程AXB+CXD=F的中心对称解及其最佳逼近的迭代算法。

In memory-constrained situations, linear congruential generators such as MinstdRand0 and MinstdRand might be useful.

在内存攸关的情况下，线性同余发生器如MinstdRand0 和 MinstdRand会很有用。

Conus is one group of the tropical carnivorous marine molluscs belonging to the mollusk gate gastropoda prosobranchia stenoglossa branch conidae family. The venom from cone snails contains a diverse mixture of pharmacological agents, mostly small, disulfide-rich structurally constrained peptides.

芋螺属于软体动物门腹足纲前鳃亚纲狭舌目的芋螺科，是一类能分泌有毒毒素的肉食性热带海洋软体动物，其分泌的毒素称为芋螺毒素（Conotoxin，CTX）。

The concentration of Cosmogenic nuclides is not only constrained by production rates and exposure time, and also closely related to surface erosion. Furthermore, the concentration is affected by geomagnetic intensity, shielding, chemical weathering, and sample geometry as well. These factors affecting Cosmogenic nuclide concentration should be calibrated when surface exposure age is calculated.

地表物质中宇宙成因核素浓度除了受到核素生成速率和地表物质的暴露时间制约外，还与地表侵蚀速率密切相关，此外，地磁场强度、遮蔽、化学风化及样品的几何位置等也会对核素浓度产生一定影响，在求算样品的地表暴露年代时，应对这些因素进行相应的校正。

By introduction of two key indexes for risk evaluation,i.e.the activity criticality index and cruciality index and adoption of 0??1 integer programming algorithm,a resource reallocation model and a calculating method were established for time-resources tradeoffs of PERT resource-constrained scheduling.An application program according to the function of tradeoff algorithm was complied by use of Delphi 7.0 and Lindo software.

针对资源限制下PERT施工进度计划的工期资源优化问题，引进评价风险量的关键指标———活动关键度指标和重要度指标，采用0-1整数规划技术，建立资源配置优化模型以及优化计算方法；运用Delphi7.0和Lindo工具，开发了该方法的应用程序，并结合实例进行了应用。

Building a new floor into the volume of the existing gym allowed the program elements to fit together, enabling a much needed expansion to the otherwise constrained locker room areas at the gym level while transforming the original dark corridors on the main level into more generous daylit spaces.

在现有体操馆的容积空间里造一个新的层次，可以将规划元素组合使用，从而使体操馆层次中受到限制的更衣室区域变得极其需要扩展，同时还需要将原来黑暗的走廊变成日光更充裕的空间。

Edges are first detected in the original image and then cut equidistantly into some segmentations, and the end points of segmentations are gathered into a points set. A constrained Delaunay triangulation is yielded from the points set and then a graph is attained too.

首先提取图像边缘，然后将边缘分段切割，得到端点集合，然后从端点集合生成Delaunay三角形网络，以Delaunay三角形为顶点，相邻三角形的属性差异作为边的权重，构造图；以基于图的分割算法生成最小生成树，划分区域。

It is shown that the optimal pilot sequence consists of some adjacent equipowered and equispaced subsequences, and each of them is constrained by certain phase conditions.

可以证明，最优的导频序列是由一些相邻的等间隔等能量的子序列构成，每个子序列的导频之间满足一定的相位关系。

In this paper, the research object is the XM18 spherical generator, in order to improve the dynamic behavior of the machine tool, the following aspects have been studied in this thesis: Firstly, based on the elasticity theory and finite element analysis theory, the finite element models of the lathe bed, dovetail, dovetail shelf, headstock, fanlike plank and millhead shelf, which were the main parts of the spherical generator, were built up using ANSYS9.0. And based on the modal analysis theory and FEM technology, the free modal and the constrained modal analysis of the main parts were studied. Accordance to the analytical results, put forword methods to optimize the key parts.

本课题以XM18球面铣磨机为研究对象，为了提高其动态特性，本文主要从以下几个方面进行研究：首先，根据弹性力学理论和有限元分析的基本理论，利用ANSYS9.0软件建立了铣磨机的主要零部件床身、燕尾、燕尾座、主轴箱、扇形板和磨头座的有限元模型，利用有限元法对主要零部件进行了自由模态和约束模态分析，并根据分析结果对关键部件提出了改进方案。

In the study based on prior image constraint, the approach using minimum information discrimination to achieve the restored image constrained by prior image is proposed, and two approaches are given, which called minimum-mean-square-error validation and fiducially strategy to count regularization parameter adaptively for new constraint item.

在基于先验图像约束的方法中，提出利用最小鉴别信息构造先验图像对图像复原结果的约束，给出了基于最小均方误差验证和置信策略自适应计算新约束项正则化参数的两种方法。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。