遗传地

In the influence the kid the language the development of four sow the cause the vegetable, heredity, sex this two sow the cause vegetable is an inborn decision of, but language environment, personal ability development of the time factor can be factitiously appropriate then change to promote speech betterly development.

在影响幼儿语言发展的四种因素中，遗传、性别这两种因素是先天决定的，而语言环境、个人能力发展的时间因素则可以人为地适当改变，以促进语言能力更好地发展。

In Chapter 2 the foundamental principle of GAs is introduced and the mathematic background of GAs is discussed. Then, a genetic algorithm based on non-Abel group theory and a parallel genetic algorithm based on supercube computer system are proposed.

遗传算法广泛地应用于函数优化和组合函数优化问题，然而如何改善其性能，提高收敛效率，仍然是当今遗传算法研究界的重要课题。

In this paper,an improved genetic algorithm is proposed to overcome the shortage of early convergence and stagnation in the traditional genetic algorithm,which is based on unconvertible rate of crossover operator and mutation operator.Moreover,the user page interest measure threshold is introduced into the association rules mining.

针对传统遗传算法在提取关联规则问题时常采用固定染色体交叉概率和染色体变异概率，容易出现早熟、收敛速度较慢的问题，提出了改进的遗传算法，并在关联规则的提取中增加了用户页面兴趣度这一阈值，成功地运用到某商业网站服务器日志挖掘。

In Genus Culter, genetic distance within species is obviously lower than that between species. And in the phylogenetic trees, all individuals of each species formed a clade. Then the conculsion was that mitochondrial CO1 gene was a good marker in Culter DNA barcoding. The conclusion was the same when the research group turned to Subfamily Cultrinae.

对鲌属物种的DNA条形码研究而言，其种间遗传距离显著地大于种内遗传距离，并且同一物种的不同个体均形成高支持率的单系，说明在鲌属类群中线粒体CO1基因是一个有效的DNA条形码标准基因。

The character of this new method is that the mechanism of the GA is not changed but the search space and the coefficient of the adjustment of th e optimization parameter are reduced continually, which leads to generation evolution to the next generation in order to produce better optimization indivi duals so as to improve the performance of the GA and get over the disadvantage o f the GA.

提出一种新的混合算法--变尺度混沌遗传算法，该算法把遗传算法和混沌算法混合在一起，在不改变GA搜索机制的同时，根据搜索进程，不断缩小优化变量的搜索空间及调节系数，引导种群进行新一轮进化，从而产生更优的最优个体，改善了GA的性能，有效地克服了GA存在的问题。

One is a large scale nonlinear programming model with equalities, the other is a more complicated NP hard and nonlinear compound 0-1 programming model. It is difficult for the existed algorithms to fulfill the demands of efficiency and size for the above problems. Two corresponding genetic algorithms are presented, in which several suitable genetic operations are constructed to make the optimization search process in the range of feasible solutions.

一个为大规模的带等式约束的非线性规划模型，另一个为更为复杂的带NP难解问题的混合非线性0-1规划，已有算法都难以满足上述两种问题的求解规模及效率的需要，我们给出了相应的遗传算法，确定了适当的遗传操作，使得问题的寻优过程始终都在可行解范围内进行，不仅提高了优化速度，而且有效地提高了优化效果。

This Hong Kong writer is really rated as for the generation respected master of harbor set new novel about swordsmen, he makes in times gone by the novel about swordsmen which can do to represent for the popular culture exceed to go into a new state, and gave higher history, cultural angle of view for it, its representative work have 《 shoot Diao hero to spread 》,《 the deer Ding record 》 etc..

大家基本上都是悲哀地看到在现在这一短暂的生存时日中，我们不知生从何来，由哪里继承下来这一大堆摆脱不掉的生理及精神遗传特质；我们也不知死往何处去，绝大多数人都认为自身的种种自然、社会属性，又会通过 DNA 再遗传给下一代人。

The result showed there existed significant differences among families in seedling growth, dry matter accumulation, leaf shape as well as root parameters at high and low nitrogen levels. Remarkable reduction in seedling height, dry matter accumulation, leaf and root parameters were observed under low nitrogen stress, whereas larger proportion of photosynthesis production was allocated into roots to promote nitrogen absorption. Family variation in seeding growth, leaf and root parameters were increased under low nitrogen stress in comparison with high nitrogen level, which would be benefit to discriminate superior L. chinense families with high nitrogen efficiency. Nitrogen efficiency of different L.

结果表明：不同氮素水平下，马褂木苗的生长、干物质积累、叶片和根系等性状皆存在显著的家系遗传差异；低氮胁迫将显著抑制马褂木苗叶片发育和根系生长，影响苗高生长和干物质积累，但低氮素水平下生产的光合产物则较多地分配至地下根系部分以促进对氮素的吸收利用；与高氮处理比较，低氮胁迫加大了苗木生长、叶片和根系参数等家系遗传分化，有利于鉴别高氮效率的马褂木优良家系。

Grandparent reeders which have been being with the latest genetic improvement each year , advanced technology and management to produce and market AA . parent stock breeders that are with the highest level of quanlity in the field of broiler genetics.

北京AA公司自1988年成立以来，连续地从美国安伟捷育种公司引进每一年都有遗传进展的AA祖代种鸡和先进的饲养管理技术，生产和销售肉鸡遗传育种中具有最高品质的AA父母代种鸡。

After nearly 40 years of development, the genetic algorithm in the theoretical study and practical application was a great success, this paper genetic algorithm for solving the course timetabling problem, first discussed the impact of factors in the course arrangement, the main constraints, to solve goals and difficulties, and a complete mathematical model to describe the course arrangement.

经过近40年的发展，遗传算法在理论研究和实际应用中取得了巨大的成功，本文将遗传算法用于排课问题的求解，首先讨论了排课问题中的影响因素、主要约束条件、求解目标和难点，并用数学模型完整地描述了排课问题。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。