遗传地

Because the genetic algorithms could search the optimization of objective function randomly, which via the evolution of groups, our work is based on the embedding/detecting way of "DWT-Based Audio Watermarking Using Support Vector Regression and Subsampling". And this method provides a preliminary discussion on the application of GA, which searching the individual with the highest fitness of attack-resistance in the aggregate of the optimal embedding strength. As an optimization solution of obtaining the optimal embedding strength, it could achieve an adaptive policy, and find a reasonable balance between the robustness and inaudibility of the watermark, just for the better robustness and inaudibility in the algorithm.

遗传算法是通过群体进化来随机搜索目标函数的最优化问题，对于前述基于支持向量回归机的小波域数字音频盲水印算法，进一步地探讨采用遗传算在嵌入强度集合中搜索对抗攻击能力适应度较高的个体，从而得到最佳嵌入强度的一个优化方案，以实现自适应策略，也使本算法能在水印的鲁棒性和不可感知性之间寻找到合理的平衡点，从而具有更良好透明性和鲁棒性。

Marker-assisted introgression is one of the major applications of molecular information in animal breeding aiming at introgression of one or more favorable genes from a line to another, while keeping the genetic background of the recipient as much as possible. It consists of three phases.

标记辅助导入是分子遗传信息应用于动物育种的一个重要方面，其目的是在标记信息的辅助下将一个品种中的一个或多个优良基因导入另一个品种，同时还要尽可能地保持受体群体原有的遗传背景。

The general form of the linear constraint s is described and the genetic optimization approach for such problems are introduced.

介绍了线性约束条件的一般形式及线性约束条件的遗传优化方法，较全面地阐述了相对于各线性约束条件的各遗传算子的特点、作用及其产生方法。

Based on optimization theories of genetic algorithms and the linear programming, a series of optimal desig...

提出了环状管网优化设计的遗传—线性规划算法，将遗传算法和线性规划有机的结合在一起，是一种有效地解决环状管网优化设计问题的新。。。

So,the genetic distance could be used for the choice ofparents and for the heterosis prediction in cross breeding of Liriodendron.

因此，花粉品质、杂交亲和力和一般配合力应作为亲本选配的重要依据；基于RAPD标记的亲本间遗传距离与子代1年生苗高和地径生长量均表现为二次曲线相关，复相关系数分别为0.8235和0.5090，达极显著(H，P＜0.01)和显著(GLD，P＜0.05)程度，说明利用亲本间遗传距离进行鹅掌楸亲本选配和杂种优势预测是可行的。

A 2-D coded GA is proposed to design the matching network composed of lumped components. The topology and component parameters of the matching network are optimized simultaneously. The network optimized by employing the 2-D coded GA shows better frequency response compared with the network synthesis method and the real frequency method. The thesis also employs the GAs to microwave measurement.

为了解决宽带匹配网络的设计问题，提出了一种二维结构的编码方案，采用这种形式的编码同时对网络结构和元件参数进行优化，成功地设计出性能优良的匹配网络，通过与综合法、实频法的设计结果相比较，表明遗传算法设计出的匹配网络性能更优，特别是在寻找新的网络拓扑结构方面，遗传算法具有更大的优势。

The influence of some rnodified genetic algorithms on searchspeed is also examined. Some genetic operations suitable to the optimization technique areobtained, therefore, a novel way of solving a class of optimizations of functions that cannot be realized using the method of steepest descent is proposed.

文中还分析了一些改进的遗传算法对于该问题搜索速度的影响，得到了适于解决此问题的合理的遗传操作，从而为有效地解决最速下降法所不能实现的某一类函数代化问题提供了一种新的途径。

Prom the differences among these hybrids, the basic genetic parameters of quatitative characters were estimated for the two parent's population apart.

优良自交系亚总体各性状的遗传方差则普遍减小，说明其遗传基础更为狭窄。所以，为了不断地育出更好的自交系间杂种，迫切需要补充新的基因源。

The newly proposed prepotency evolution algorithm based on the concept of "prepotency"has a higher convergence speed comparing to the conventional genetic algorithm.

尤其是在对大气寿命的预测上，由于数据结构不好，传统遗传算法很容易产生过拟合现象，但混沌突变的遗传算法很好地避免了该现象的发生。

The development, the techniques of tissue culture and genetic transformation of rubber tree is of great practical value.

因此迫切地需要有目的地解决目前橡胶树组织培养和遗传转化中存在的问题，完善其组织培养技术，建立稳定、高效的遗传转化体系。

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。