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混合遗传

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It introduced research actual state of genetic algorithms, enumerated the calculation result of global optimized crossover and mutation, gave the mostly program of binary system character string coding and using numerical model and the practical data checked out the effectiveness of mixed inversion algorithm.

文中介绍了遗传算法的研究现状,例举了全局寻优交叉和变异的计算结果,给出了二进制字符串编码的主要程序段,用数值模型与实际资料验正了混合反演算法的有效性。

For the first time, this study conducted a series of field sampling in multiple locations over several years and demonstrated that the B and Q biotypes first invade areas with high frequency of transport through human movement of plant materials, and then rapidly spread into surrounding areas and displace indigenous genotypes, and in parallel with displacement significant changes in sex ratio occurred in the mixed populations. Crossing experiments demonstrated that in the B. tabaci species complex there are many genetic groups that are completely or nearly completely isolated in reproduction. Apart from behavioural mechanisms, difference in host plant suitability and insecticide susceptibility between whitefly biotypes may also play important roles in the displacement of indigenous whiteflies by alien whiteflies in Zhejiang.

本研究首次以一个地理区域内广泛系统的野外调查数据证实,B型和Q型烟粉虱首先通过花卉苗木调运入侵交通较为发达的地区,然后迅速向周边扩张并取代土著烟粉虱,同时入侵取代过程伴随着混合种群中性比的变化;杂交试验证明烟粉虱复合种内存在多个生殖上隔离或基本隔离的遗传群;B型烟粉虱在浙江省内迅速取代土著烟粉虱,除行为机制外,生物型之间寄主适应性和药剂敏感性等方面的差异也可能在此过程中起着重要作用。

Moreover,when pregnant mice were given phenobarbital sodium while exposed to passive smoking,the frequencies of CA,SCE and MN of cells of both maternal and fetal mice increased signifi...

提示孕期被动吸烟对母、胎双方均可造成遗传物质损伤。苯巴比妥钠诱导的高活性混合功能氧化酶系对烟雾中遗传毒性物质可起代谢活化作用。

In this paper, the Genetic Algorithm, the Simulated Annealing and the Sequential Quadratic Programming used in the design of the HTS magnet were discussed and it was found that they had different advantages and limitations.

因此,本文发展了由遗传算法、序列二次规划算法和模拟退火算法有机结合而形成的优势互补的混合算法来进行高温超导磁体的电磁结构优化。

According to the fact that Genetic Algorithm can give generally the better solution in the smaller feasible domain,a hybrid algorithm is presented.

根据遗传算法在较小的可行区域内一般有较好的求解结果这一事实,提出了一种混合算法。

The hybrid optimization algorithm is employed to solve the models where the membership functions of loan return rates are complex.The algorithm integrates fuzzy simulation,neural network,genetic algorithm and simultaneous perturbation stochastic approximation algorithm.

对于贷款收益率的隶属函数比较复杂的情况,应用集成模糊模拟、神经网络、遗传算法和同步扰动随机逼近算法的混合优化算法求解模型。

The hybrid optimization algorithm was employed to solve the models where the membership functions of loan return rates were complex. The algorithm integrated fuzzy simulation, neural network, genetic algorithm and simultaneous perturbation stochastic approximation algorithm.

对于贷款收益率的隶属函数比较复杂的情况,应用集成模糊模拟、神经网络、遗传算法和同步扰动随机逼近算法的混合优化算法求解模型。

In this method, a global approximately optimal solution of all ANFIS parameters is obtained using genetic algorithm and then premise parameters and consequent parameters are fine tined respectively using BP algorithm and Least Squares Estimate.

这种新混合学习方法首先利用遗传算法得到ANFIS所有参数的一个全局近似最优解,然后再利用BP算法和最小二乘法分别对前提参数和结论参数进行细化调整。

Firstly, the course reviews the basic knowledge about matrix algebra and linear model, and introduce the BLUP for mixed linear model, then, learn the approaches to contruct and solve various animal models, including single trait animal model, repeatability model, maternal model, threshold model, random regression model, non-additive model and multiple traits model, finally, train application of animal model to animal genetic evaluation by means of a software on estimation of breeding values.

本课程首先回顾有关矩阵代数和线性模型的基础知识,介绍线性混合模型的BLUP求解方法,然后根据动物性状和动物育种资料的类型和特点,具体讲授不同种类动物模型,包括单性状动物模型、单性状重复率模型、单性状母体效应模型、单性状阈模型、单性状随机回归模型、单性状非加性效应模型和多性状动物模型等的建立和求解方法。最后,结合动物育种值估计软件,进行动物模型在动物生产性能的遗传评估中的应用训练。

The six groups classified by cluster analysis of SSR markers is consistent with the available pedigree and the result of combining ability. So it is feasible to analyze the genetic diversity of maize population by SSR markers and to distinguish heterotic group by method of mixed sampling.

6个玉米群体的聚类结果与系谱来源和田间配合力测定结果基本一致,说明,用若干单株混合取样分析玉米群体SSR的遗传多样性,进而对不同玉米群体划分杂种优势类群是可行的。

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推荐网络例句

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石!

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。

When you click Save, you save the file to the host′s hard disk or server, not to your own machine.

单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。