查询词典 partition problem

The observing activity featured by angle-dependent effects, sequence characteristics, so the problem can be partition into multiple phases according to the maximum slew times. The algorithm based on dynamic programming is developed to find the global optimal solution within polynomial time.

分析了观测活动性质，并基于观测活动间存在时序关系特征，将问题按照卫星的最大侧摆次数划分为多个阶段，提出了基于动态规划思想的算法，能够在多项式时间内得到问题的最优解。

The basic idea is to divide an image into two descriptions with quincunx down-sampling. To tackle the problem of low coding efficiency in the traditional spatial domain multiple description image coding techniques, we propose a directional lifting technique to extensively exploit the correlations among neighboring pixels, in which the lifting directions are selected and organized based on the quad-tree partition.

基本思想是在空域将一幅图像按梅花形下采样为两个描述，为解决传统空域下采样多描述编码技术编码效率低的问题，提出能充分利用相邻像素相关性的方向提升小波变换，并通过四叉树的分割实现方向的组织和选择。

It will expose the design problem of maintainability of civil airplane to the early stage of design. This paper discusses the composing of the virtual maintenance environment, builds non-immersion virtual maintenance environment of undercarriage, and establishes a part library management system. The characteristic of maintainability models and maintainability analysis based on virtual technique is researched to give the maintainability frame model of civil airplane virtual maintainability analysis. All levels of maintenance time model and maintenance man-hour model are established. Analog-Huffman code is proposed to optimize space partition method in traditional collision detection arithmetic."Maintenance therblig"is brought into the broken down of maintenance tasks, and the new maintenance tasks broken down method is proposed. The demands of human measure, position, and equipment layout in human engineering are discussed, and the verification methods of human measure, position and equipment layout in virtual maintenance are given. Basic principle and verification procedure of maintainability virtual verification is developed primarily, and the reachablity, the visibility, and posture-comfortability are verified.

本文论述了虚拟维修环境的组成，构建了某型飞机主起落架非沉浸式虚拟维修环境，建立了维修对象的零件库管理系统；研究了基于虚拟技术的维修性模型特点及维修性分析流程，给出了基于虚拟技术的民机维修性分析框架模型，并结合传统维修性模型，建立了各级维修时间模型和维修工时模型；提出类HUFFMAN编码，结合人因工程的要求，优化了传统碰撞检测算法中的空间分割法，使之适用于柔体；在维修性分解中引入"维修动素"，给出了与CATIA、DELMIA等应用软件结合紧密的维修任务分解方法；论述了人因工程中对人体尺寸、姿势、设备布局的要求，给出了虚拟维修中人体尺寸、姿势分析、民机内设备布局的验证方法；初步制订了维修性虚拟验证的基本原则和验证程序，并结合具体实例对可达性、可视性、干涉性以及人体姿态舒适性进行了验证，较清晰、真实地反映了维修人员的维修状态。

The paper focuses on the map design problem of LBS navigation service.the thesis brings forward that placenames can be used for route navigation landmarks according to the toponym"s characteristic and researches the principle and method of toponym cognitive ranking partition, and visualizes the map content by the toponym"s ranking.

本文研究LBS导航服务时的地图设计问题。本文在研究地名特性基础上提出将地名作为路线导航地标，并研究地名认知等级划分的原则、依据和方法。

In a brief be the thin just inclined problem of Gao Ai3 Pang4 of human body, rectifying body blemish the nothing but is to pass to pack to make shortly have a liking for go to a little higher, long of have a liking for go to a little bit shorter, or make to have a liking for fatly to lose 1:00, thin of have a liking for go to a little bit fatter and F, usually the length be wrong to see, partition wrong see, the angle be wrong to see and contrast wrong see conveniently more in the costume design, and rectify to the human body of the effect be also more obvious.

简单地说就是人体的高矮胖瘦正斜问题，对形体缺陷的纠正无非就是通过着装使短的看上去高一点、长的看上去矮一点，或者使胖的看上去瘦一点、瘦的看上去胖一点而己，通常长度错视、分割错视、角度错视以及对比错视在服装设计中用的比较多，而且对人体纠正的效果也比较明显。

The best theoretical solution to a partitional clustering problem is to find all possible partitions and choose the partition that minimizes the objective function. However, the enumeration of all possible partitions is impractical even for data sets of moderate size. Therefore, as an alternative, most partitional approaches use an iterative optimization technique. And this could be cause local minimum.

本文在分析了目前聚类的基本方法的基础上，指出以K平均法等为代表的分割聚类虽然理论上找到类的所有划分并使得目标函数最小就可以获得最优解，但由于对于相当尺度的数据集列举所有可能的划分并不现实，因而多数分割方法采用迭代优化技术作为变通。

Groups the population according to the search width and integrated partition region principle, and determines task allocation on the basis of balanced task. Further regarding the center of the square grid as the point of the graph, transforms the original problem to be an approximate Hamilton question, then obtain one path like "one stroke" starting from the jumping-off point and rendezvousing for the midpoint of left side.

根据搜索宽度和整分搜索区域原则进行人数分组，再根据区域分配的均衡原则确定任务分配，最后把每个方格中心看作图中的点，将搜索问题转化为一个近似的哈密尔顿问题，设计出一条从起点处出发集结于一边中点的&一笔画&路径，而该路径的搜索效率达到95%，即得到的是误差很小的近似最优解。

Finally, summing up the dynamic reliability theory thinking over time variant effect about load and resistibility and the standard grading partition of reliability calculation by quantification combining reliability target, the practical means resolving existent aqueduct bridge structure existing reliability problem, and put outing the means is practical and feasible in relation existent aqueduct bridge structure.

本文最后总结了考虑荷载和抗力时变效应的动态可靠度理论，结合基于可靠指标定量计算的可靠性等级划分标准，提出了解决现有渡槽结构存在的可靠性问题的实用方法，并通过计算证明该方法对现役渡槽结构是实用、可行的。

On P2HP platform, the task partition, parallel granularity and implementation technology of this large scale power flow computing problem are described in detail.

分析了大规模电力系统潮流计算问题在P2HP计算平台上的任务划分、并行粒度和实现技术。

The airspaces sector partition is an important of research problem at the domain of the air traffic management.

对空域扇区优化问题的研究是空管领域的一项重要的研究课题。

They have quite a lot of work to do.

他们有许多工作要做。

Let us give you a more elaborate example of this process.

让我们给你这个过程的更多的详细例子。