遗传的

Based on NewGA, the thesis proposes a multigroup parallel genetic algorithm with simulated annealing method , then combines MPGASA with BPNN. According to whether simulated anealing method is used or not, two parallel genetic neural networks are implemented respectively. Results show that PGANN_SA is superior to PGANN and NewGANN.

在NewGA的基础上首次提出一种基于模拟退火机制的多种群并行遗传算法MPGASA，将MPGASA与神经网络相结合，按照是否采用模拟退火机制接受新个体分别实现了两种并行遗传神经网络PGANN_SA和PGANN，计算结果表明采用模拟退火机制有利于改善遗传神经网络的性能。

Ginseng can be regenerated through organogenesis or somatic embryogenesis and indirect somatic embryogenesis is mainly used for its regeneration.

遗传改良是人参育种的重要手段之一，而遗传转化和再生体系的建立是开展人参遗传改良工作的前提和基础。

The optimum models of all traits were major gene plus polygene mixed inheritance models.

遗传模型分析揭示泗棉3号×Carmen组合的产量及其产量构成因素的最适遗传模型符合主基因+多基因混合遗传模型，说明存在控制这些性状的主基因。

This article in by has in the foundation which the method studies, is easy in view of the standard genetic algorithms in the solution Vehicle Routing Problems to appear precociously, is easy to fall into the partial optimal solution shortcoming, makes the improvement to the traditional genetic algorithms, proposed the multi- populations genetic algorithms.

本文在已有方法研究的基础上，针对标准遗传算法在解决车辆路径问题上容易出现早熟，容易陷入局部最优解的缺点，对传统的遗传算法进行改进，提出了多种群遗传算法（Multiple_population Genetic Algorithms）。

The proposed algorithm has advantages to the global searching ability of genetic algorithm and the stable convergence of dimidiate searching root method.

结合传统遗传算法良好的全局搜索能力和二分法可靠的收敛性，本文提出了一种改进的遗传算法－层次压缩遗传算法。

The DNA data analysis showed that the average intra-species genetic distance was 0-0.005; there was no significant genetic divergence between the western flower thrips found in Beijing in 2003 and those reported internationally.

分子数据分析显示：种内个体间平均遗传距离在0~0.005之间，2003年在北京发现的西花蓟马与欧洲等地区报导的西花蓟马不存在明显的遗传差异；9种蓟马种间平均遗传距离为0.213。

Premature convergence and weak local optimization are two key problems existing in the conventional genetic algorithm. To overcome the shortcomings, an improved genetic algorithm based on the particle swarm algorithm is proposed.

针对传统遗传算法中存在的易陷入局部最优解和后期收敛速度慢的问题，基于粒子群算法，对传统遗传算法作了改进，提出了一种基于粒子群算法的遗传算法。

Among the four species of Bovidae, genetic differentiation in the HSL genes between yak and buffalo is equivalent to that between buffalo and cattle and between buffalo and zebu.

研究表明，牦牛、普通牛和瘤牛3个物种间的遗传距离大小相近，牦牛和水牛间的遗传距离与普通牛、瘤牛和水牛间的遗传距离大小相当。

Using RAPD markers techonolgy analysed the genetic structure of populations and built up the reaction system of SSR markers of Aristida pennata, at the same time, analysed the genetic structure based on SSR markers techonolgy. The research results are as follow:(1) 11 amplifiction random primers were used to detecte 125 loci in 76 samples. The total proportion of polymorphic loci of. Aristida pennata is 96.8%, the average proportion of polymorphic loci of Aristida pennata is 45.3%. The analyses of Shannon diversity index (1,0.5151) and Nei gene diversity index(h, 0.3471) indicate that the gene variation is rich in subpopulations.

Pennata.tirn为研究对象，在阜康，147团及121团周边等7个亚种群采集76个样品，通过RAPD分子标记技术进行亚种群内和种群间的遗传变异分析，并采用SSR技术建立羽毛三芒草的检测技术平台同时进行遗传结构分析，结果表明：(1) 11条RAPD引物检测到76个样品有125个位点，总多态位点百分比为96.8％；亚种群内平均多态位点比为45.3％，香农表型多样性指数(1，0.5151)，Nei's基因多样度指数(h，0.3471)都说明羽毛三芒草种群有较为丰富的遗传变异。

These results showed that thegenetic diversity of Schima superba and Cryptocarya chinensis distributed equally inthe subpopulations and the genetic diversity of Castanopsis chinensis distributedunequally in the subpopulations.

可见荷木和厚壳桂的遗传多样性是较均匀地分布在各个亚种群中，而锥栗的遗传多样性在各个亚种群中分布不均匀，每个亚种群都有自己独特的遗传多样性形式。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。