个体变异
- individual variation
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五味子种籽性状与种仁含油特性的个体变异规律
Individual Variation of Seed Features and Oil Content in Kernel of Schisandra chinensis Ball . Traits
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结果分别获得处理效应、阶段效应、顺序效应以及个体变异的估计。
Results Obtain the estimates of treatment effect , time period effect , sequence effect and individual variation separately .
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在此算法的基础上,本文将其在个体变异操作中进行了一些改进并成功应用于FlowShop生产调度。
In this paper mutation in the algorithm is improved . It has been applied to the flow shop scheduling problem successfully .
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结论:乳腺前哨淋巴结显像可以了解所显淋巴结的质与量以帮助活检者正确定位SLN,观察乳腺癌淋巴引流个体变异以引导活检部位和制定辅助治疗方案。
Conclusions : Mammary lymphoscintigraphy in breast cancer is helpful for localizing SLN correctly and identifying abnormal lymph drainage .
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在DEACS算法中,每个个体变异、交叉时的控制参数都是由上一次迭代的寻优性能决定。
When mutation and crossover , these control parameters for each individual are determined according to the optimization performance at the last iteration .
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最近Levander根据我们以往人体硒需要量研究结果,换算为美国人的硒需要量,但换算过程中,需要个体变异数字。
Recently , Levander , based on our results on the study of human selenium requirement , calculates a dietary selenium recommendation for the standard North American .
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一种由种群发育约束个体变异的鲁棒遗传算法
Robust genetic algorithm with mutation parameters bounded by upgrowth of populations
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用模糊聚类法分析松毛虫个体变异及种类
Application of fuzzy clustering to analysis of individual variations and population types of pine moth
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同时,使用自适应变异操作进行个体变异,对进化过的个体进行退火操作,以调整和优化群体。
Meanwhile , the adaptive mutation and annealing operation were used to adjust and optimize the population .
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但要使进化真能发生效力,在鼠之鼠之间以及人与人之间,一定存在个体变异。
But for evolution to be able to act , there must be individual variation between mice , and between men .
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在发生卵巢管数目变异的突变品系中,个体变异率最高达50%,最低为2%。
In the mutant lines with different ovariole numbers of the ovaries of female moths , the proportions ranged from 2 % to 50 % .
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并通过高频的倒位操作的变异方法提高了个体变异的频率,从而避免算法陷入局部最优。
And through the high frequency inversion operation variation method improves the individual variation in the frequency , so as to avoid falling into local optimal algorithm .
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而现实中取材、切片及个体变异等因素,很难取得大量相近的真实数据,从而可能出现多种结论。
But with the difficulties of obtaining specimen , warps at slice up and aberrance of singles , we have so little chance to gain a large quantity of realistic data .
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改进的变异算子使群体中个体变异概率自适应调节,且保证群体中表现优良性状的个体变异概率不为零,保持群体不断进化,加速算法的收敛。
Improved mutation operator makes the probability of individual in group adjust adaptively and ensures that the mutation probability of the outstanding individuals is not zero , it can maintain the population evolving and accelerate the convergence .
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车辆识别的计算量一般较大,而遗传算法具有并行优化的特点,因此本文对遗传算法也进行了研究,提出了一种由种群发育约束个体变异的鲁棒遗传算法。
Generally speaking , the computing weight for vehicle recognition is very heavy , the genetic algorithm can reduce the computing weight , therefore , a robust genetic algorithm with mutation parameters bounded by population 's upgrowth is proposed .
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提出一种新的优化方法研究离心叶轮的形状优化问题,即在遗传算法中加入自适应算子调节个体变异概率,来保证搜索的全局性和种群的多样性。
This paper put forward a kind of new optimization method to study the problem of shape optimization of a centrifugal impeller , i. e. by adding the self-adapting operator into genetic algorithm to adjust individual mutation probability for ensuring the searching generality and population diversity .
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结论:角膜非球面参数Q值与近视程度无关,个体间变异较大。
· CONCLUSION : The Q value of corneal asphericity is independent from myopic diopter .
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转化当代和后代产生了许多变异个体,变异性状的遗传与转化当代外源DNA供体的亲缘关系有一定的相关性。
To some degree , the inheritance and segregation of variant traits had a link with genetic relation between exogenous DNA donor and receipt .
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然而,口前对DNA甲基化模式的个体间变异和个体内器官间变异的相对重要性却知之甚少,不利于在生态表观遗传研究中制定合理的采样策略。
But by now , the importance of the DNA methylation variation among different individuals and organs is acquainted scarcely , which is disadvantageous for setting up reasonable sampling strategies during ecological epigenetic researches .
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用Inter-简单重复序列(ISSR)标记对樟子松东北分布区9个种源的135个个体遗传变异进行了检测。
Inter Simple Sequence Repeat ( ISSR ) was used to detect genetic variation among nine provenances , including 135 individuals .
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单株产量和每穗粒数在F1代就有较大的(接近于异质群体)个体间变异,可能是籼、粳的杂合性或亲和性造成的。
Grain yield per plant and grains per panicle have large variation among F_1 's plants ( close to that in segregating generations F_2 and F_3 ) . This may be the results of heterozygosity or compatibility in indica-japonica hybrid .
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RHD1227A等位基因为亲代遗传基因,而非个体基因变异。
RHD 1227A allele is an ancestral , but not a spontaneously mutated allele .
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在个体内变异小于0.2时,可以采用估计法进行样本含量的估计;
When , estimation method is feasible in estimating sample size .
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结论妇女月经周期的个体内变异基本上是随机的;
Conclusion The intra-individual variation of womens menstrual cycles was essentially random ;
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结论所检测基因突变为亲代遗传,而非个体基因变异;
Conclusion The gene mutations detected were the parental generation , rather than individual genovariation .
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个体自适应变异遗传算法
Genetic Algorithm with Individual Adaptive Mutation Probability
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在交叉运算后,增加一次适应度的计算,通过计算后的适应度来决定个体的变异范围;
Second , the aberrance scope is obtained according to the fitness which is calculated from the operation after crossover .
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群体的变异量大于群体内个体的变异量,变异来源是多层次的。
Thepopulation variation amount is bigger than the individual variation amount within the population and the variation sources are multiple-level .
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遗传多样性是种内不同群体之间或一个群体内不同个体遗传变异的总和。
Genetic diversity means the total of heredity and variation between different colonies of the same species or different individuals of the same colony .
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克隆个体超变异的概率过高过低都对检测不利,通过实验可找到较佳数值。
Hyper-mutation probability of clonal selection should not be too high or too low , an appropriate value can be found by trial experiment .