查询词典 genetic

Osteoporosis as a complex multifactorial disease is determined by genetic and environmental factors as well as their interactions,with high degree of genetic determination.

骨质疏松是一个复杂的多因子疾病，由遗传和环境因素相互作用，具有高度的遗传决定性。

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。

As investigated, the shape of the fruit was mainly rotundity, and the color of the fruit were red, black, yellow, mauve. Variation coefficient of mineral elements, which revealed wider variation range and rich genetic diversity. Among them, Fe, the content and the variation coefficient of which was the highest(2.12 mg·100g-1 and 26.99％), it has large potential for futher selection. Ripe fruit of 12 wild myrobalan plum seedlings were analyzed using head space-solid phase microextraction and gas chromatography-mass spectrometry. The results showed considerable genetic variations in these aspects: The total content of volatile components, the classes and contents of each compounds classes, the segregation ratio, and content of main components. There were 83 compounds in total belonging to 6 classes detected in 12 wild myrobalan plum seedlings, including esters, alcohols, ketones, aldehydes, heterocycle and Hydrocarbons. Among them, Formic acid, hexyl ester, the content of which was the highest(4.33 μg·g-1),was important character impact odors.

结果表明，①新疆野生樱桃李实生株系的果实形状主要为圆形，少数为椭圆形、卵圆形、卵形和宽卵形，果实颜色有黄色、红色、紫红色和黑色等4种类型，野生樱桃李果实纵径、横径、单果重、果形指数以及可溶性固形物含量均存在一定程度的变异，遗传多样性较为丰富，其中以单果重的变异系数最大(9.13 %)；②新疆野生樱桃李实生株系果肉组织的Zn、Ca、Mg、Mn、Fe及Cu等6种矿质元素含量变异丰富，其中以Fe元素的含量（平均值为2.12 mg·100g-1）和变异系数（26.99％）最高，进一步筛选高铁性状单株的潜力很大；③从新疆野生樱桃李12个实生株系中共鉴定出醇类、醛类、酯类、酮类、烃类及杂环类等6类83种挥发性化合物，各实生株系挥发性化合物总含量、挥发性化合物种类及其含量以及主要挥发性化合物分离比率与含量等存在广泛的遗传变异，遗传多样性较为丰富，其中以甲酸己酯含量最高（平均值为4.33 μg·g-1），是野生樱桃李果实香气形成的重要特征性化合物。

The genetic algorithm is based on the search algorithm of natural selection and genetic mechanism.

遗传算法是一种基于自然选择和遗传机制的搜索算法。

The Genetic Information Nondiscrimination Act bars insurance companies from rejecting people based on genetic test results.

遗传信息的非歧视行动阻拦了保险公司拒绝那些测试结果有遗传的人。

Nongenetic risk factors may modify the outcome of genetic risk in other settings, such as smoking, diet, and exercise, which can modify the effect of genetic risk for heart disease.

非遗传因素可能会改变遗传风险的结果，如吸烟、饮食和运动。这些可以改变遗传因素对心脏疾病的风险。

Solving nonlinear programming problem with genetic algorithm is the most important director of the application of genetic algorithm.

其中应用遗传算法解决非线性规划问题是遗传算法应用中的一个重要方向。

Symmetric code ; genetic algorithms ; partial genetic inheritance ; robot optimal control ; trajectory planning

对称编码；基因算法；部分基因继承；机器人优化控制；路径规划

In order to improve the convergence rate of genetic algorithms based on edge detection,a novel edge detection method based on a good point set genetic algorithm was proposed.

为了提高遗传算法应用于边缘检测的收敛速度，提出了一种基于佳点集遗传算法的边缘检测方法。

Wheat outbreeding population ; genetic distance ; genetic divergence

小麦异交群体；遗传距离；遗传趋异

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。