查询词典 genetic

With the object of bettering the efficiency of the crossover operator of genetic algorithms, an improved crossover strategy is proposed. The genetic algorithm with this strategy is capable of preventing incest, caducous crossover and, to some extent, premature convergence.

从提高遗传算法交换操作效率的角度出发，提出一种改进交换策略；采用该交换策略的遗传算法可以防止近亲繁殖和失效交换的出现，在一定程度上避免早熟收敛的发生。

According to the dendrogram by UPGMA cluster analysis using Neis(1972) distance calculations based on AFLP banding, all the accessions were distinct and revealed enough genetic diversity for identification and classification of accessions within Cajanus cajan. From ME cluster analysis, 9 distinct evolutionary groups were detected. The preliminary results indicated that China maybe one of the pigeonpea genetic diversity minor center.

根据AFLP多态性数据绘制的聚类图，将139份木豆资源分为9个类群，并在分子水平上初步探讨了它们之间可能存在的演化关系，支持了木豆起源于印度，并在非洲东部形成次生起源中心的观点，并提出中国可能是栽培木豆的又一次生起源中心。

The result of the molecular phylogenetic tree showed that the genetic relationship were close among human, monkey and chimpanzee, and between Norway rat and house mouse, but the genetic relationship were relative far between dog, cattle and house mouse.

分子系统进化树结果显示，人、猕猴、黑猩猩之间以及挪威鼠和家鼠之间的亲缘关系较近，而狗、牛与家鼠间的亲缘关系较远。

Chloroplast genetic transformation is a new way of plant genetic engineering.

叶绿体遗传转化是植物基因工程的新方向。

Genetic algorithm is used for the optimal subset searching and the strategy for chromosome coding, the choice of fitness function and the design of genetic operators are discussed.

讨论了遗传算法中染色体的编码方式，适应度函数的选择以及遗传算子的设计方法。

The concept of genetic algorithm, its configuration, operators and existing problems are introduced in this paper. A new algorithm for clustering analysis is presented based on genetic algorithm. There are two characteristics in our approaches. Firstly, the algorithm is the general-purposed and our clustering analyzer can cluster large data set with mixed numeric and categorical attributes.

4介绍遗传算法的概念、算法结构、运算算子及主要存在问题；提出了一种基于遗传算法的聚类新方法MGA，该方法有两个主要优点：一是通用性强，可以对包含数值属性和符号属性的大数据集进行聚类；二是提高了数据挖掘的效率与质量。

This study adopts PCR method of coagulase - and sequencing RouGe detection a fragment of gene ESR polymorphism, and its single-nucleotide polymorphisms egg and correlation analysis, explore properties with different genotypes RouGe egg performance, from the relationship between genetic level RouGe reveal candidate function mechanism of molecular genetics of egg performance, RouGe new strains of selection for the use of genetic material.

本研究采用PCR-SSCP和测序的方法检测肉鸽ESR基因某一片段的多态性，并将其单核苷酸多态性与产蛋性能进行相关性分析，探索不同基因型与肉鸽产蛋性能之间的关系，旨在从候选功能基因层次揭示肉鸽产蛋性能分子遗传机理，为肉鸽新品系的选育提供可借鉴的遗传资料。

The paper includes the constitutes of system hardware, image pretreatment, the achievement of parameter detection artithmetic. The main work is as follow: The pater makes use of vanguard genetic algorithms in image segmentation, uses vanguard genetic algorithms to get the image threshold. Using this method we may get different grey vehicles from the background exactly. Used the support vector machine theory to conduct the vehicles automatic sorting simulation research, the simulation result had proven this method could quite be accurate carries on the vehicles type the recognition; Improved based on the background automatic renewal hypothesized examination region algorithm, enhanced timeliness and the accuracy which the vehicles examines; And to has carried on the specify based on the hypothesized examination region imagery processing algorithm realization; In the paper also introduced withdraws the algorithm based on the gradation continuous movement vehicles characteristic to carry on the vehicles the characteristic to withdraw as well as to use the localization method which colored filter same gradation chart processing unifies to carry on the realization method which the vehicles license plate locates.

本文根据智能交通控制与仿真对于交通流量、车辆到达率、车辆速度等交通信息检测的需求，基于视频图像进行了交通信息处理的算法研究与实现，主要工作包括以下几个方面：将先锋遗传算法应用到图像阈值分割中，利用先锋遗传算法寻求全局最优阈值，可以比较准确的将图像中不同灰度的车辆从背景中分离出来；采用支持向量机理论进行了车辆自动分类的仿真研究，仿真结果证明该方法能够比较准确的将车辆的类型进行识别；改进了基于背景自动更新的虚拟检测区域算法，提高了车辆检测的实时性和准确性；并对基于虚拟检测区域的图像处理算法实现进行了详细说明；论文中还介绍了基于灰度连续性的运动车辆特征提取算法进行车辆的特征提取以及采用彩色过滤器同灰度图处理相结合的定位方法进行车辆牌照定位的实现方法。

The application of genetic algorithms to search for optimization of function is studied, and the comparison of optimization of function achieved by genetic algorithm with binary code and octal code is analyzed.

研究了遗传算法在寻找函数最优值方面的应用，比较分析了二进制遗传算法和八进制算法的函数优化结果。

Objective To study genetic variance component model of qualitative traits with covariates in nuclear family, and to analyze the effects of genetic factors and environmental factors.

目的 研究核心家系中带协变量的质量性状的遗传方差分量模型，定量地评价遗传因素和环境因素对质量性状的作用。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了