基本算法

The corresponding solutions are given.The work including:(1) A right-angled polygon building model is introduced, which is based on rectangle structure graphics.

本文对其中的部分问题进行了深入研究，从典型建筑物轮廓的几何形态出发建立基本模型，并给出了相应的建筑物提取算法。

In addition, the method for evaluating roundness error through computers and corresponding calculating methods and procedures is researched.

给出了评定圆度误差的基本原则，研究用计算机实现圆度误差评定的四种方法及相应的算法和程序。

Aiming at the position characteristic of constant spacing, the method of obtaining the center line of crop rows is researched. The improved pixel lateral histogram algorithm for extracting the center of crop row is designed.

针对条播作物的行距基本恒定，条播作物都成行排列的位置特征，本文着重研究了作物中心行的提取方法，设计了改进的像素直方图法提取作物中心行的算法。

The improved pixel lateral histogram algorithm was used to extract the centre of crop row. The infield adaptability of the pixel lateral histogram algorithm was enhanced by subsection computation of pixel lateral histogram.

根据条播作物行距基本恒定、作物成行排列的位置特征，利用改进的象素位置直方图法识别作物中心行，通过分段统计象素位置直方图，有效地提高了算法的田间适应度。

Nantong University,Nantong 226019,ChinaAbstract:Comparing with the three basic structures of linked list、tree and graph, the thesis expounds the hypothesis and method of row vector leading linked list data structure to unite the three basic structures which can decrease complication of the algorithm.

本文通过对线性表、树和图三类基本结构的比较分析研究，提出了由行向量引导的链表存储结构来统一三种结构存储的设想和方法，使得某些问题的解决能建立在相对统一的存储结构上，试图降低算法的复杂程度。

It is an ideal choice for students who want to learn the rudiments of this dynamic and exciting CAD technology.

课程主要内容包括：计算机辅助设计技术的基本概念、原理、算法和软件使用。

It also presents the basic GA theory, water distribution system's mathematical modeling, one king and many queens genetic inheritance method, genetic saltation theory and some of the C++ source codes.

进而对遗传算法的基本原理、给水管网现状分析数学模型的建立及求解、一王数后的基因遗传方法和基因突变方法进行了分析，并给出实现这一方法的C语言核心代码。

This paper built water quality assessment model based on some basic introduction to PP. It made several conclusions as follows: PP model was stable when sample size was no less than 20. It run much faster when the range of projection vector was constrained between 0 and 1. Accelerated genetic algorithm should be recommended because of its unique advantages. Using scatter diagram of making comparison directly was more convenient than using regression model.

该文在介绍该模型基本计算步骤的基础上，经建模分析，得出：各评价等级取值范围内样本个数不小于20即可具有较好的稳定性，投影向量分量的取值范围为[0，1]时更有利于提高计算速度，选用加速遗传算法寻优时间更短，使用图解法或直接比较法更为方便和快捷。

The results is the same as the result of sel〓 optimal simulation, shows that the model and algorithm are feasible.

通过与自优化模拟技术的计算结果相比较，两者结果基本一致，说明该模型和算法是可行的。

This paper firstly introduces the point set of topology theory, enumerating all kinds of topology relations which have practical application value.

首先介绍了点集拓扑理论，归纳了有实际应用价值的各种拓扑关系，分析了拓扑模型中的最基本拓扑元素和空间实体的关系；然后提出了一种要素类的拓扑构建方法，其算法以MAPGIS7.0空间实体的结构为依据，主要体现要素分裂的思想。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。