The fourth chapter presents a concept of infinite population according to the features of CCGA, and designs some particular methods for adversarial problems solving based on this concept. These methods include shared fitness, gene linkage, self-adapted mutation, phantom parasite, elitist population, shared sampling and brood selection. Then we give the explanation and argumentation of these methods in theory and in experiment.
第四章根据CCGA的特点，提出了无限群体的概念，并在此概念的基础上就对抗性问题设计了几种独特的方法，这些方法包括：共享适应值、基因连锁、自适应变异、虚幻寄生体、精英群体、共享采样和同胞选择等，然后从理论和实验上对这些方法给予的充分说明和论证。
In order to better address poverty students in the study of the various problems of life, social support should learn from the theory of social assistance thinking of building integrated, the development of subsidy policy system with a view to the micro level to help poor students more comprehensive quality raise the target in the macro level, and improving the overall quality of the citizens, and promote a large population of the country's human resources change.
为了更好的解决贫困学生在学习生活中的各种困扰，应该借鉴社会支持理论的社会救助思想构建综合性的、发展性的资助政策体系，以期在微观上达到更有利于贫困学生自身素质全面提高的目标；在宏观上，提高整体国民素质，推进人口大国向人力资源大国的转变。
No discussion about Easter Island would be complete without Thor Heyerdahl's theory of its population by ocean travelers from Peru.
托尔·海尔达尔认为岛上的居民是由海路而来的秘鲁人，如果没有这一理论，任何有关复活节岛的争议都不完整。
Malthus Population Theory always comes with disputes since it was introduced in China more than 100 years ago. China's academic circle has also experienced from excessive encomium in the early stage, via full denial in 1950's, to partial acceptance after the reform and opening.
马尔萨斯人口理论在传入我国的 10 0多年里，始终伴随着争议，我国学术界对其态度也经历了从最初的倍加推崇到上世纪 5 0年代起的全盘否定再到改革开放后的部分肯定的转变。
Optimization of breeding schemes for quality pig was studied through four parts: fixing on the breeding goal, constructing and optimizing crossbreeding system, optimizing breeding schemes for pure line breeding and reproduction population. Aim of this study was offering theory base and practice guarantee for quality pig breeding and production in China, and improving pork`s competition power. Quality pig was that it has high yield, good quality and big safety.
本文通过优质猪育种目标的确定、杂交繁育体系的构建与优化、纯系繁育群育种方案的优化以及优质猪选育的其它环节四部分对优质猪的选育方案进行了优化研究，目的在于为我国优质猪(产量高、质量优且安全的猪)的育种和生产提供理论基础和实践保障，提高猪肉产品的竞争力。
With introducing of nonlinear dynamics and chaos theory, several nonlinear models of single species population, such as discrete time logistic model, Ricker model and Hassell model, were simulated.
本文在介绍混沌与非线性系统理论的基础上，对离散时间的Logistic模型，Ricker模型，Hassell模型的非线性动力学行为进行了模拟，并给出了相应的分形表达。
Finally, the atomic coherent population trapping is studied in a multilevel laser-induced continuum structure system including cascade two-photon processes by means of quasi-classical theory. The condition leading to the atomic coherent population trapping and the dark state are given explicitly. The effects of atomic initial state and the laser intensity on the populations distributed in the atomic bound statesare discussed. Influence of atomic coherence on Rydberg-atom stabilization is revealed.
考察了中间态为准连续态的双通道光致离化系统中激光的相对相位对稳态光电子能谱的影响，发现如果发生相消干涉的离化通道的中间态属于同一组准连续态矢集，则发生相干俘获的条件及俘获率均与激光的相对相位无关；如果发生相消干涉的离化通道的中间态属于不同的准连续态矢集，则相干俘获现象只在两离化通道的相位差n＝0或。
However, the experimental work at his lab with Drosophila melanogaster, which helped establish the link between Mendelian genetics and the chromosomal theory of inheritance, demonstrated that rather than creating new species in a single step, mutations increased the genetic variation in the population.
他的实验室对黑腹果蝇进行了试验研究，以帮助在孟德尔遗传学与遗传染色体理论之间建立连接；但是，该试验证明了不是在个别步骤中产生新的物种，而是基因突变增加了群体中的遗传变异。
After analysis on content framework of manpower land-use in the expectant-urbanized areas of Fengcheng city, this paper forecast the population size and the demand for land, and reposite the land use spatial structure and industrial structure in the expectant-urbanized areas of Fengcheng city with regional space restructuring theory.
通过对丰城市准城市化地区土地统筹利用内容体系框架的研究，文章对丰城市准城市化地区的人口规模和土地需求进行了预测，并运用区域空间结构重组理论对该地区土地利用空间结构及产业结构进行了重新定位。
Department of Biology, Hainan Normal College, Haikou 571158 Abstract Based on the theory ofmodularity, the correlation between the environmental factors and the modular structures inthe population of young Cephalotaxus mannii is studied by using the analysis of greyrelatedness degree.
环境因子对海南粗榧幼苗种群构件结构的生态效应*付永川向志强郭力华刘玉成杜道林摘要以构件理论为基础，运用灰色关联度分析技术，对海南粗榧幼苗种群构件结构与环境因子间的关联度进行了分析。
By means of the life table of acting factors combinations and the theory of modern population system control, this paper evaluated the efficacy of different combinations of application dosage and times of granulosis virus on Plutella xylostella control.
利用作用因子组配的生命表和种群系统控制理论，模拟了小菜蛾颗粒体病毒不同浓度和不同施用次数组合对菜心地小菜蛾自然种群的控制作用。
According to Holstein＇s theory about radiation trapping effect, the influence of gas temperature and ground-state population density on the effective lifetime of the resonance level is discussed.
根据Holstein的共振辐射俘获理论，讨论了气体温度和辐射俘获下能级粒子数密度对辐射俘获上能级有效辐射寿命的影响，显示辐射俘获下能级粒子数密度是辐射俘获效应中的主导因素。
Those plantations could not preserve the soil and water, and not improve the environment. So this research studied on the population structure, species diversity, moisture and nutrient in soil, and the infection of environment elements of the main plantations, Hippophae rhamnoide and Populus simonii. Systemically, and confirm the suitable environment of the main plantations, in order to offer theory bases to vegetation renewal and rebuilding. The result is showed as follows.
本研究以该区主要的人工灌木林沙棘和乔木林小叶杨为例，系统研究了其种群结构、群落物种多样性、水分养分效益、环境因子影响，并进行了稳定性评价、确定其适生环境，为黄土高原丘陵沟壑区植被恢复和重建提供理论依据。
By treating two kinds of the ocean microalgae with EMS (shorted from Ethyl Methanesulphonate) and 60Co-γ ray radiation, we revealed the effect of the two mutagenesis on the rate constant of the cell population of Chlorella and Isochrysis galbana, and the effect of the two mutagenesis on the EPA(shorted from eicosapentaenoic acid) and DHA(shorted from docosahexaenoic acid) contents in the two ocean microalgae cells. The experimentation provided the theory of cultivating a new ocean mocroalgae variety rich in EPA and DHA and increasing rapidly in cell number.
本文采用两种方法化学诱变剂甲基磺酸乙酯EMS、~(60Co-γ射线辐照对两种海洋微藻进行诱变育种，揭示了化学诱变处理对两种海洋微藻的生长繁殖速度及二十碳五烯酸(eicosapentaenoic acid，简称EPA，20：5n-3)和二十二碳六烯酸(docosahexaenoic acid，简称DHA)在两种海洋微藻细胞中含量的影响；~(60)Co-γ射线辐照诱变处理对两种海洋微藻的生长速度及EPA和DHA含量的影响，为培养高产EPA和DHA并且生长快速的海洋微藻新品种提供了理论依据。
After introducing the dissipative structure nological system of Dwarf-Male-Sterile wheat based theory and analyzing high efficiency breeding techon the dissipative structure theory, a new plan was put forward to increasing efficiency of wheat breeding technological system of Dwarf-Male-Sterile in thispaper:Scientifically designing basic population, introducing new germplsm and gene, opening breeding system, increasing positive entropy of system.
在介绍耗散结构理论并以此为依据分析了矮败小麦育种体系的耗散结构特征的基础上，提出了提高矮败小麦高效育种效率的途径：科学构建原始群保证系统远离平衡态；引入新种质，保持体系的开放性；保证有益基因的引入，增加负熵流是群体改良的关键。
This paper studies the population characteristic of takiu in the wild field and discusses it in theory.
本文对扭角羚的野外种群特征进行了研究并进行了理论上的探讨。
It uses the crossover of topological sort list to guarantee that each offspring is a feasible solution and the search space is a global one. In order to improve the convergence of GA, it uses greedy strategy to improve the fitness of one chromosome in the population in crossover operator, based on Lamarckian theory in the evolution.
HGA使用拓扑排序表的交叉来保证下代的合法性和搜索空间的全局性，为了提高HGA的收敛速度，根据拉马克进化理论，在交叉算子中使用贪婪策略来提高个体的适应值，模拟结果显示HGA的调度结果和算法的时间复杂性都是令人满意的。
This study is the first one to apply metapopulation theory in natural butterfly population in China.
本研究是国内首次将集合种群理论应用于野外蝴蝶种群的研究。
This lends weight to the theory that a viable hybrid population was sustained by interbreeding over a long time.
这无疑是对如下理论的支持：杂交后产生的可育杂合群体可以维持相当长的时间。
For over a decade, RA Fisher, JBS Haldane, and Sewall Wright had been reaching toward a quantitative methodology for uniting Mendelian and Darwinian theory by shifting the locus of study from the individual to the population.
十多年来，类风湿性关节炎费，洁百士霍尔丹，和休厄尔赖特对已达成的定量方法，团结孟德尔和达尔文的理论，把研究的轨迹从个人到人口。