查询词典 combinatorial path

Quadratic assignment problem is a NP-hard combinatorial optimization problem and has been applied in various fields. There are always many zero elements in the flow matrix or distance matrix of the quadratic assignment problem instances which are abstracted from the practical problems. Much computation time can be saved if we can first reduce the size of the problem by using its zero elements.

二次分配问题(quadratic assignment problem， QAP)是应用于诸多领域的组合优化NP-难题，许多从实际问题中抽象出来的二次分配问题，其流矩阵与距离矩阵中存在大量零元素，如果在该类二次分配问题的求解中，能够充分利用这些零元素的信息，将大大缩减问题的规模，节省大量运算时间。

The problem of collecting and delivery shunting of non-through wagon flow on the actinoid private line belongs to a kind of the combinatorial optimization problems.

放射形专用线非直达车流取送车问题属于一类组合优化问题，影响因素较多。

It establishes a cooperative system of energy saving and emission reduction deducing from appraisive system founded on three-dimensional combinatorial model, monitoring system grounded on SDSS and examinatorial system fixed on BP Neural Network, which provides necessary system info for energy saving and emission reduction.

认为建立基于三维组合模型的评价体系、基于SDSS的监测体系和基于BP Neural Network的考核体系基础上的节能减排协同体系研究是实现节能减排约束性指标的必要理论支撑。

In this paper, the authors consider point-feature cartographic label placement from a combinatorial optimization point of view.

地图注记是为待定位注记求取注记位置的过程，它是自动地图制图中的一个重要的难题，其中点状注记问题可以看作是一个组合优化问题。

The active compound Celangulin-V, which is the main active compound against insect pest from Celastrus angulatus Max, was modified at its 6-OH and the core structure β-dihydroagarofuran polyol of Celangulins from the basic hydrolysis of the extract of the root bark of Celastrus angulatus Max was modified by combinatorial chemical method.

主要结果如下： 1、合成了苦皮藤素V6-乙酯、6-烯丙基醚和6-酮等衍生物，通过NMR方法鉴定了化合物的结构，经文献检索均为新化合物，生测结果表明酮衍生物丧失了杀虫活性，乙酯衍生物与苦皮藤素V活性相当，醚衍生物较苦皮藤素V活性提高11倍。

In addition, using combinatorial chemis...

第一，用溶胶-凝胶法制备纳米TiO_2光催化剂，得到的TiO_2光催化剂粒径在40-60nm，外观呈球形，颗粒没有团聚现象。

The data mapping modulation, by which the information data are mapped as the combinatorial sequence, and the security protocol method of the parallel combinatory SS communication system are presented in this paper.

本文提出了并行组合扩频通信的数据调制映射法，并以此为基础，给出了一种安全通信协议方式，既可作身份认证又有好的保密能力。

The content of this thesis contains the overview of the waste incinerator site selection problems and multi-criteria decision making theory, the development of a flamework for multi-criteria siting selection process, the establishment of evaluation factors, the completement of an expert decision support system for a waste incinerator site selection model, and the empirical application of a real world waste incinerator site selection existing in Taichung City.Keywords : NIMBY Facility、 Expert Decision Support System、 Combinatorial Optimization Mathematical Programming Models、 Multi-criteria Decision Analysis、 Analytic Hierarchy?Process 、Multi - attribute Utility Function MAUF

先以区位可行性筛选方式进行分析，并结合数学规划模式与多属性效用评估方法进行垃圾焚化厂区位选择之多准则评估作业；（3）评估项目阶层架构之研拟，并由专家问卷获得评估因子权重值及评估指标操作定义，以进一步建构专家知识库；（4）建立一焚化厂区位选择专家决策支援系统，以辅助规划及决策人员进行垃圾焚化厂区位选择之方案评估作业；（5）最后针对台中市设置垃圾焚化厂设施的区位选择问题进行本专家决策支援系统之操作。

In general, it was shown that the combinatorial vaccine with HBsAg and HBcAg can induce strong and homogenous humoral and cellular responses, and conduce to eliminate the endocellular HBV virus and break immunologic tolerance which existed durative in chronic hepatitis B patients. So it can offer the new thought and theory foundation for the further study to exploit the Hepatitis therapeutic vaccine.

总之，本课题工作表明，用CS1与HBsAg联合，具有良好的体液免疫与细胞免疫效果，有助于清除HBV病毒并有希望打破HBV感染引起的慢性乙型肝炎病人持续

On the basis of electrical network characterization, Chapter 5 presents a new principle to detect PCB's fault first time. Three methods of online test for electrical network characterization are described in detail. Then, a hierarchical, combinatorial approach is firsfly presented. The test efficiency of this method is studied also. The experiment result shows that the new approach can greatly enhance the test efficiency of fixtureless tester under the requirement of 100% test for PCB's connections.

本文第5章利用集成电路的输出特性，首次提出了一种新的印刷电路板连接故障的检测原理，给出了三种印刷电路板电气网络输出特性的在线测试方法；在此基础上，首次提出并实现了基于飞针式在线测试仪的层式组合测试思想，研究了这种方法的检测效率；应用实例表明这种方法在不降低对印刷电路板连接故障100％测试的要求下，可以有效地提高飞针式在线测试仪的检测效率。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。