查询词典 combinatorial problem

In the real life, have some to grow similarity since new problem and the old problem are general, unknown object and the known number object get in touch with always mutually, be on basis observing carefully in new problem , overwear knowledge , come to handle the new problem old experience, this thought is that process it is have purpose's , effective conversion contradiction, to solve a problem ultimately change solving problems that process , the mathematics inscribe one kind , is to change from saying , solving problems on this significance melt return to

中文摘要：在实际生活中，由于新老问题总有某种相似之处，未知的事物与已知的事物总是相互联系的，即在新问题仔细观察的基础上，用旧知识、旧经验来处理新问题，这种思维是一种转化过程，数学题的解题过程就是有目的的、有效的转化矛盾，最终解决问题，从这个意义上说，解题就是转化。

Based on the study on the traveling salesman problem, in this dissertation, some results on the solving of production scheduling problem using the neural networks are described, which includes the following main parts: l The method which was put forward by Hopfield－Tank of solving the traveling salesman problem is analyzed, and the drawbacks of the method are pointed out. The interlinks between optimal tours and city distribution in the clustering and divide and conquer method are analyzed. A parallel network algorithm on the problem of the traveling salesman problem is presented.

主要包括以下几个方面的内容： 1对Hopfield和Tank提出的解决旅行商问题的方法做了分析和研究，指出该方法的严重不足；对于用聚类方法和各个击破的思想解旅行商问题，分析了最优路径与城市分布之间的几个关系；提出了一个解决旅行商问题的并行网络算法，由这一算法得到的解是&or-optimal&路径。

The algorithm has some problems, such as bias problem, aliasing problem and one problem that affects none-shade part of image and is caused by Gaussian blur. To solve these problems, this paper makes some improvement on the algorithm. Firstly, it uses the Woos average depth principle and PCF algorithm to solving bias problem and aliasing problem; secondly, it designs and implements an effective method to control the range of blur; thirdly, it adapts any size texture to story information. This method for keeping information plays important part on raising realistic graphic; fourthly, it takes use of the technology of programmable graphics hardware and the method of FBO to improve efficiency of algorithm.

由于基于高斯模糊的阴影算法存在阴影走样、量化误差和高斯模糊影响非阴影部分图像等问题，因此本文从以下几个方面对算法进行了改进：第一，在算法中添加了woo的平均深度值原理和PCF算法，改善了量化误差和阴影走样问题；第二，设计并实现了一种方法，有效地控制了高斯模糊的范围，提高了三维图形的真实感；第三，使用任意大小的纹理进行存储，提高了阴影的真实感；第四，通过可编程图形硬件技术的应用，提高了算法的运行速度。

Adopting speech record analysis by making a sound while thinking ,aiming at Organic Chemistry test questions and doing a lot of individual case analysis, The author summarizes the successful problem-solving thinking strategy for outstanding students of Organic Chemistry questions then edites the successful problem-solving thinking strategy for outstanding students as a teaching plan and trains consciously the students in the experiment team adhibiting the problem-solving thinking strategy for Organic Chemistry in the usual teaching practice activities to find out the characteristics of students" problem-solving thinking activity in Organic Chemistry and to improve the students" ability of problem-solving in Organic Chemistry rapidly.

然后，将优生成功解题的思维策略编成教案，在正常的教学实践活动中，有意识地对实验组学生进行有机化学问题解决思维策略训练，以了解学生有机化学解题思维活动特征，促进学生有机化学问题解决能力的迅速提高。实验以株洲六○一中学高三年级理科两个班的学生为被试，以自编《高中有机化学问题解决能力检验的前测和后测试题》和自编《高中生有机化学解题思维策略训练教程》各1套等为材料，通过6周的教学训练，收集训练前、后有机化学测试成绩等数据，采用SPSS10.0进行统计分析，得出如下研究结论： 1、对高三年级学生进行有机化学解题思维策略训练能有效地提高其有机化学解题能力。

Thirdly, we examine a job scheduling problem, in which jobs could be processed by multiple in-line steppers. This problem includes two decisions: job assignment and job sequencing. Through developing a new and concise representation scheme for modeling the two decisions, we solve the multiple-machine scheduling problem by various meta-heuristic algorithms. The preceding single-machine scheduling problem in fact is a special case of the multiple-machine scheduling problem.

第三部分探讨在多机情境下，求解工件排程问题，在此情境下产生两个决策变数：工件指派给各机台，以及工件在机台内的排序问题；为了解决此问题，本研究透过新的染色体设计，能同时代表此两个决策变数，使得解题空间变小，求得更好的解题品质。

The classical Abel identity as specific case and some significative combinatorial identities are obtained.

由此得到Abel恒等式的特殊情形和一些很有意义的组合恒等式。

Based on this, to the recent years the related questions which appear frequently in the middle school mathematics competition, nimble utilization the aliquot concept, the relative prime nature, the combinatorial nature, the factorization, as well as the conclusion of the continual integer product nimbly can by aliquot knowledge and the methods, and so on, carried on the proof and the explanation.

在此基础上，对近年来在中学数学竞赛中频繁出现的相关问题，灵活运用整除概念、互素性质、组合性质、因式分解以及个连续整数的乘积能被整除的结论等知识和方法，来进行证明与解答。

In the last section, we obtain a sufficient and necessary condition for an antichain to be the set of all circuits of a combinatorial scheme.

在最后一节，我们得到了组合概型的一个反链是其所有圈集的充分必要条件。

As in Volume 2, where I found to my delight that the basic principles of elementary probability theory and number theory arose naturally in the study of algorithms for random number generation and arithmetic, I learned while preparing Section 7.2.1 that the basic principles of elementary combinatorics arise naturally and in a highly motivated way when we study algorithms for combinatorial generation.

如同在第二卷中那样，在那里我高兴地发现，初等概率论和数论的基本原理很自然地出现在关于随机数生成和算术的算法的研究中。而当我准备编写7.2.1小节时，我注意到，当我们研究组合生成的算法时，初等组合学的基本原理自然地并以高度带激励的方式出现。

However, combinatorial chemistry has matured over the years and has found its place in the armamentarium of drug hunters.

但是，组合化学经这几年已经逐步成熟，在药物发现设备领域建立了一席之地。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。