遗传地

A quadrilateral distortion metric was proposed, which considered both of element minimal angle and warpage. An mesh smoothing approach of combining Laplacian method and μGA for quadrilateral mesh was presented, which could improve the mesh quality significantly without effect the algorithm's performance.

提出一种综合考虑单元最小角和翘曲的四边形网格质量评价标准，以该标准为优化目标，提出了一种以面积为权值的Laplacian方法与小种群遗传算法相结合的网格光顺方法，在兼顾计算效率的同时，可有效地优化网格形态质量。

For this model, monomial Genetic Arithmetic is designed. The arithmetic, when ensuring the condition of time and resource restriction,_could rationally do resource allocation of projects, and then effectively shortens the whole time limit.

针对该模型设计了单项目的遗传算法，该算法在保证项目任务紧前关系与资源约束的条件下，能够合理进行项目的资源分配，从而有效地缩短项目的总工期。

These two ideas are well combined in this paper,and a new algorithm is derived,that is the multigroup parallel genetic algorithm based on simulated annealing method.

将这两种思想有机地结合起来，提出了一种基于模拟退火机制的多种群并行遗传算法。

Genetic complementation analysis proved the function of the candidate gene by using promoter-ORF from Nona.

我们利用Nona的启动子区加ORF成功地进行了遗传互补实验。

Convenient application tools and practicable facilities have been provided for second order nonelastic analysis of multistorey and high-rise lightweight steel frame and design method based upon structural ultimate bearing capacity.

结合本文轻型钢框架的二阶非弹性分析的计算理论和方法及结构极限承载力的设计方法，将遗传算法引入轻型钢框架结构的优化设计中，这为合理地进行轻型钢框架结构工程设计提供了有利的工程指导。

This was the first time you could clearly see cause and effect from a nongenetic influence.

这是我们第一次清清楚楚地看到非遗传因素所带来的因果关系。

According to the optimization design and reactor networks design of chemical system engineering, the method which restriction nonlinear programming problems can be transformed to the no-restriction no-linear programming problems was put forward.

针对化工系统工程中的优化设计、反应器网络设计等问题，提出了一种将有约束的非线性规划问题转化为无约束的非线性规划问题的北京化工大学博士学位论文方法，使用本论文提出的改进遗传算法对这类问题进行了求解，提高了计算效率和计算精度，能有效地寻找到全局最优解。4。

This algorithm not only avoids the local optima and also robust to initialization.

利用改进遗传算法强大的全局寻优能力，这种算法较好地克服了FCM算法对初始化敏感、容易陷入局部最优的缺陷。

By iteratively combining these two procedures we achieve a way of training the configuration of RBFNN. In addition, the algorithm is very robust with respect to the noise level. Simulation experiments show that the proposed algorithms are sound. In chapter 3, which is the extension of chapter 2, the improvements of the architectures of RBFNNs and the solutions of their relating problems are discussed, Firstly, an new distance metric is advanced and a forward orthogonal least square selection procedure is applied to learning the parameters of classification function and selecting the important input nodes.

首先分析了目前存在的同时确定RBFNN结构和参数的方法的缺陷，在此基础上提出了用基于拉马克的进化学说的进化编程算法来改进算法，以克服某些缺陷；然后针对受到严重噪声污染的系统，如何提高RBFNN的泛化能力的问题，利用基于AIC的适应度函数的改进遗传算法学习结构和参数；最后介绍基于MDL原理的方法，将优化网络的结构和参数分为两个阶段：训练和进化，先自适应地改变RBFNN基函数的中心和宽度，同时训练输出线性权值，再用基于MDL原理的适应度函数的标准GA来优化隐层节点，通过交替使用这两过程达到训练RBFNN的结构和参数的目的，该算法具有较强的鲁棒性。

The status quo, biologic characteristic and variation of Chinese wild rose wereinvestigated and studied at the level of morphology, physiology, phytochemistry, Palynology and molecularbiology.

本研究在对我国野生玫瑰种质资源进行全面调查的基础上，从形态学、生理学、植物化学、孢粉学及分子生物学5个层面，系统地研究了我国野生玫瑰当前的资源状况，弄清了野生玫瑰基本的生物学特性及其变异，并利用AFLP分子标记技术对部分玫瑰野生种质资源和品种资源的遗传多样性和亲缘关系进行了分析。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。