遗传地

Gene Algorithm is an intelligent optimization algorithm, which solves complex combination and optimization problem by simulating the process of natural anagenesis and using simple code and gene operation.

遗传算法是一种新的智能优化算法，通过模拟自然进化过程，利用简单的编码技术和遗传操作高效地解决复杂的组合优化问题。

With the combination of Improved Adaptive Genetic Algorithm and Improved Bottom-Left heuristic algorithm,the packing of rectangles can be effectively solved.

提出了一种基于环形交叉算子和环形变异算子的自适应遗传算法，并将改进的自适应遗传算法和IBL启发式布局算法相结合，有效地解决了矩形排样优化问题。

Limited by the population and generations, the local search ability is not good. A new niche—Braham model is brought forward. In the Braham niche, the random mating mode between chromosomes is replaced by the mating mode based on the fitness of the chromosomes.

本文提出了一种新的小生境算子—婆罗门，将简单遗传算法中的随机交配改为根据染色体的适应度进行交配，提高了遗传算法局部搜索能力，有效地防止了基因漂移。

Objective To study genetic variance component model of qualitative traits with covariates in nuclear family, and to analyze the effects of genetic factors and environmental factors.

目的 研究核心家系中带协变量的质量性状的遗传方差分量模型，定量地评价遗传因素和环境因素对质量性状的作用。

A linkage map was constructed using 151 polymorphismic markers.The map spans1841.9 cM covering 12 rice chromosomes with an average interval of 12.1 cM,which wellintegrated the markers from the high density linkage maps of rice.

以151个多型性标记位点构建了12条染色体的遗传连锁图谱，该图谱以标记间平均间距为12.1cM覆盖了水稻基因组的1841.9cM，该图谱较好地整合了目前已发表的水稻遗传图谱上的分子标记。

Finally the terminal rule of Genetic Algorithms has been proposed and the implementation of random number maker has been presented. Developed a genetic algorithms based system identification technique. Using this technique globally optimized models for linear and nonlinear system can be identified without the need of a differentiable cost function or linearly separable parameters.

然后提出了一种基于遗传算法的模型降阶方法，可一致地应用到连续系统和离散系统的模型降阶；最后提出了一种基于遗传算法的多目标通用控制器设计方法，可以满足不同的控制策略，而不是某一种特定的控制策略，计算机仿真结果充分验证了方法的正确性和有效性。

Because we have Some One higher than our parents to thank for the souls which make us great or small; and because, while family noses and family chins may descend in orderly sequence from father to son, from grandsire to grandchild, as the fashion of the fading flowers of one year are reproduced in the budding blossoms of the next, the spirit, more subtle than the wind which blows among those flowers, independent of all earthly rule, owns no order but the harmonious Law of God.

因为，亏得有个比我们的父母更高的上帝，正是上帝赋予我们以灵魂，从而使我们成为伟大的或渺小的；因为，一个家庭所特有的鼻子和下巴，会瓜迭绵绵地由父亲遗传给儿子，由祖父遗传给孙子，其方式，就象今天凋谢的花朵重新再现于明年的蓓蕾一样；而精神呢，较之在繁花间吹过的风更为微妙，它独立于尘世的一切规律之外，除了上帝的和谐法则，它不承认任何秩序。

Species and distribution of hazelnut at home and abroad, and the research status quo on breeding and genetic diversity of hazelnut were systematically summarized in this paper.

本文中，较为系统地介绍了国内外榛子的种类及分布；良种选育及遗传多样性的研究，针对榛子遗传改良存在的问题提出相应的对策。

Although the conservative termed secondary homothallism inherit mode and absence of wild resources, the commercial strains encompass extremely limited genetic variation, in this paper we revealed some variations of phenotypic and genorypic characteristics among the tested strains in mycelium growth rate, field performance, esterase isozyme, soluble protein and AFLP fmgerprint.

双孢蘑菇由于自身保守的次级同宗配合遗传方式以及长期野生种质资源的匮乏，造成现有栽培菌株之间相似性程度较高，尽管这样，本试验采用不同方法，从菌丝生长速度、农艺性状、蛋白质以及基因组各方面系统地反映了双孢蘑菇主要商业栽培菌株间的表型及遗传差异性，为双孢蘑菇种内杂交育种提供了科学依据。

In this thesis, the theories and methods of GA are analyzed in detail , the trend of GA in recent times is briefly discussed. Because of the importance of image segmentation, two methods of color image segmentation based on GA are proposed. One is the surface of thresholds image segment method, the other is entropic threshold method. Two algorithms are realized through VC++ 6.0. After that, we compare the characteristics of two algorithms and prove that GA can be very well applied to solving image optimal problems.

本篇论文比较详细地论述了遗传算法的基本理论、方法，指出了算法的研究现状，由于图象分割的重要性，提出了两种基于遗传算法的彩色图象分割方法，即阈值曲面分割方法和最佳熵阈值分割方法，通过VC++6.0编程得到了实验验证，比较了两种算法的性能，证明遗传算法完全适用于图象的优化问题。

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。