• Genetic similarities were calculated using simple matching coefficient, and the phenogram was constructed by using UPGMA method. Three cultivars of n.

    计算各样本间的相似性系数和遗传距离,并采用UPGMA法对遗传距离进行了聚类分析。

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  • Genetic differentiation among wild materials was obvious and gene differentiation coefficient of it was larger than of bred varieties and local materials.

    沙打旺野生材料间遗传分化明显,其基因分化系数比育成品种间和地方材料间大。

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  • The genetic similar coefficient was calculated and cluster analysis was conducted.

    进而通过计算遗传相似系数进行聚类分析。

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  • A hybrid learning approach is presented in which genetic algorithms are used to optimize both the network architecture and the regularization coefficient.

    提出了一种利用遗传算法优化前向神经网络的结构和正则项系数的混合学习算法。

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  • The genetic variation coefficient of yield was highest (17.59%).

    产量的遗传变异系数最大,为17.59%;

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  • The path analysis showed that the coefficient of direct path and genetic correlation was equivalent between grains number per spike and water soluble pentosan content.

    遗传通径分析结果表明,穗粒数与水溶性戊聚糖含量之间的直接通径系数与其遗传相关系数基本一致。

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  • Quantity genetic analysis showed that genetic variation coefficient, performative variation coefficient and hereditary ability of growth properties were greater than physiological properties.

    数量遗传分析表明,各生长指标的遗传变异系数、表型变异系数和广义遗传力一般均大于生理指标;

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  • The material from Southwest China and Japan has relatively high genetic dispersion, low Gst and average value of genetic similarity coefficient.

    来自我国西南以及日本两地区的小豆种质遗传离散度较大,遗传分化系数、相似系数平均值较低。

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  • The environment coefficient usually relates to some external environment factors, such as the distance to genetic sag and the contact degree to frontal sand body of delta.

    环境系数通常与距离生油凹陷的远近及与三角洲前缘砂体的接触程度等外部环境因素有关。

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  • Optimization method of the distinguishing coefficient is set up, on the basis of the integration of genetic algorithm(GA)and the difference information entropy in grey theory.

    把遗传算法和差异信息熵理论结合给出了优化分辨系数的方法。

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  • Similarity analysis showed that genetic similarity coefficient between different strains has large difference.

    相似性分析结果显示:不同菌株之间遗传相似性系数相差较大。

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  • First, the theory and basic knowledge of digital Intermediate Frequency receiver and the Genetic Algorithms principle for optimizing the quantization coefficient of the digital filter are expatiated.

    首先,对数字中频接收机理论基础进行叙述。并讲述了用于优化数字滤波器系数的遗传算法原理和算法。

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  • And according to the genetic similarity coefficient, the genetic relationship among these local varieties was researched by UPGMA method.

    并基于遗传相似系数、采用UPGMA法对这些地方品种的遗传关系进行了研究。

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  • Among them, the genetic variation coefficient of yield per plant was up to 29.51%, so it had high heredity potential, swift genetic advance and good selection effect.

    单株产量位次比较靠前,并且遗传变异系数也比较大(29.51%),因此单株产量的遗传潜力大、遗传进度快、选择效果较好。

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  • When the same recurrent selection porgram was used in various population, the greater the coefficient of variation of the population, the greater the genetic progress it made.

    不同群体采用同一种轮回选择方案,表现出变异程度大的群体,选择的遗传进展也大。

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  • This paper proposed a new method for parameter estimation based on genetic algorithms (GA) for linear systems in the case of its coefficient matrix with uncertain disturbance.

    对于线性系统,本文针对其系统矩阵a存在一类不确定性扰动的情况,提出了一种基于遗传算法(GA)的新的参数估计方法。

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  • The gross flowers and height, diameter, crown width, crown height, crown surface of Chinese fir clones in Guangxi area were investigated by genetic correlation analysis and path-coefficient analysis.

    对广西杉木无性系的总花量与树高、胸径、冠幅、冠高、树冠表面积进行了遗传相关及通径分析分析表明:总花量与生长性状之间的遗传相关系数均为负值;

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  • The gross flowers and height, diameter, crown width, crown height, crown surface of Chinese fir clones in Guangxi area were investigated by genetic correlation analysis and path-coefficient analysis.

    对广西杉木无性系的总花量与树高、胸径、冠幅、冠高、树冠表面积进行了遗传相关及通径分析分析表明:总花量与生长性状之间的遗传相关系数均为负值;

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