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It is dedicated to education and research focusing on a wide diversity of research areas, including the quantitative population ecology of plants and small mammals, terrestrial plant community ecology, grassland biodiversity and restoration ecology, plant fungal pathogen dynamics and population biology, successional changes in terrestrial insect communities, terrestrial ecosystem ecology, the remote sensing of natural resources, life history theory, molecular evolution in vascular plants, evolutionary and theoretical population genetics, theoretical ecology, and limnology and aquatic ecology, basic biology of insects, Ecophysiology; paleobotany; population genetics, evolution of plants and fungi.

其主要致力于生态学和进化生物学的教育和研究,主要学科领域包括植物和小型哺乳动物种群生态学、陆地植物群落生态学、牧草生物多样性和恢复生态学、植物真菌病原动力学和种群生物学、陆地昆虫群落连续改变、陆地生态系统生态学、自然资源遥感、生命史理论、维管束植物分子进化进化和理论种群遗传学、理论生态学、湖沼学和水生动物生态学、基础昆虫生物学、生态生理学、古植物学、种群遗传学、植物和真菌的进化等。

During human being evolution, the biological evolution and the cultural evolution are influenced each other, while the cultural evolution is in the position of predomination.

在人类进化的整个过程中,生物进化和文化进化是相互影响的,其中文化进化占支配地位。

To take advantage of the chaotic mapping, a repetition prepotency evolution algorithm with a population initialized by chaotic numbers is developed in which the chaotic mapping is an uncommon seeding-machine to produce different initial'chromosome'populations never appeared before for PE algorithm. The combination of chaotic mapping and PE makes PECA be able to probe lots of optima rapidly and effectively owing to the quick convergence speed of PE and relatively high population diversity guaranteed by chaotic mapping.

结合混沌来初始化优势进化算法的群体成员,还设计了基于混沌初始化群体成员的循环优势进化方法,该方法在混沌保证每次优势进化绝对不同的初始群体成员的情况下,不仅具有了优势进化的快速收敛优点而且有混沌映射保证群体成员的高度多样性,从而可以快速探测很多局部最优点,大大提高了找到全局最优点的机会,用它训练神经网络预测四卤化物振动频率研究充分体现了该策略的优越性。

The first stage of evolution was thus the evolution of a matrix of self-generating complexity, which gave evolution a population of persistent things to work on.

因此,进化的第一阶段是自生复杂性的基体进化,它为进化提供了源源不断的进化任务。

It is shown that G gene has the highest speed during the evolution and has uniqueinquilinous body in order to escape immune pressure from inquilinous body byanalyzing phylogenic trees of five genes in the whole genome. In the evolution of Ggene, DRV and MRV are in different groups. DRV, Chinese vaccine isolated used inhuman and Japanese vaccine isolated used in human are in the same group. MRV,CVS and street viruses isolated from dogs are in the some group. It is shown thatDRV is vaccine isolated compared with phylogenic trees of other genes, and it istestified previous conclusion that unqualified vaccine used for human was used nearthe infected beer cote resulted in spotted deer infected.

对狂犬病毒基因组5个基因的分子进化树分析表明,为了逃避宿主的免疫压力,G基因的进化最快速,而且具有宿主的特异性,在G基因的进化中,DRV和MRV分别位于不同的组群,DRV与中国人用疫苗株和日本疫苗株在一个组群,MRV与CVS以及犬脑分离的街毒归在一个组群,结合其他基因的进化树表明,DRV与疫苗株具有较近的亲缘关系,从分子水平验证了以前对DRV流行病学调查得出的推测,在狂犬病疫情发生的鹿场附近曾使用过人用狂犬病疫苗,导致梅花鹿感染狂犬病毒。

In this study, the genomic structure and regulatory elements of ApoD from 10 representive species including protozoan, invertebrate, protochordate and vertebrate were analyzed and compared. The genomic structure of ApoD is less conserved in organisms from protostome to deuterostome invertebrates, while it is highly conserved among chordates including amphioxus and verebrates. All four conserved cysteine residues are present in amino acid sequence of deuterostome ApoDs, while there are only two cysteine residues in amino acid sequence of protostomes ApoD. Structure divergence between protostome and deuterostome ApoD proteins suggests their function difference. The majority of regulatory elements are present in nearly all organism ApoD genes ranging from unicellular protozoan to mammals, suggesting that ApoD plays a very fundamental role, and possesses a conserved regulatory mechanism. However, there also exist some specific regulatory elements, which are present only in certain species and may perform some special roles.ApoD mRNA expression in murine NIH/3T3 fibroblasts exposed to various stresses such as as hydrogen peroxide and UV light shows dose-dependent increase. And a fly homolog of ApoD, Glial Lazarillo, whose overexpression results in increased resistance to hyperoxia as well as a extension of lifespan under normoxia and resistance to starvation without altering lipid or protein content.

本文首先从生物信息学角度对分属于原生动物、无脊椎动物、头索动物和脊椎动物类群的10种动物ApoD的基因结构及调控区的调控元件进行分析及比较,发现:(1)ApoD基因外显子-内含子结构从原生动物草履虫到原口动物再到后口动物海胆的进化过程中不保守,但在分析的几种脊椎动物中相当保守;(2)文昌鱼ApoD基因扮演从无脊椎动物到脊椎动物承上启下的角色,可能代表了脊椎动物ApoD基因原型;(3)四个半胱氨酸保守位点在后口动物中都存在,而在原口动物中只存在两个,原口、后口动物ApoD蛋白一级结构上的差异反映蛋白功能上可能也存在一定差别;(4)调控区大多数主要调控元件为不同动物共有,说明ApoD主要功能及其表达调控在进化中相当保守;(5)ApoD基因个别调控元件是随着物种进化而出现并开始发挥相关作用,如SF-1;还有一些调控元件在进化过程中还没有发现其规律,这说明ApoD某些功能和基因表达调控模式可能因物种不同而存在一定的差异。

Combining with co-evolution mechanism, we renewedly defined the several aspect of the co-evolutionary agent, such as the belief, action, communication, decision maker, and so on. We made the co-evolutionary agent model and actual world model become a uniform closed loop system, and established the symbol deduction theory model of multi-agent system based on co-evolution mechanism.

结合协进化机制,从符号演绎逻辑的角度重新定义了协进化智能体的信念、动作、通信、决策器等各个方面,将协进化智能体模型与实际世界模型形成一个统一的闭环系统,并建立了基于协进化的多智能体系统的符号演绎理论模型。

Forward security is achieved by an evolutional parameter,which is updated with the evolution of time segment,and the group public key and members' certificates are updated along with the parameter.If a menber's private key is betrayed,the attackers can't forge the member's previous signatures.Revocation is achieved by Certificate State List,which needs the group center to update the CSL in real time,and the previous signatures of the revocative members are still valid.

前向安全性通过一个进化参数实现,进化参数随着时间段的变化而进化更新,从而使群公钥和成员证书进化更新,即使成员密钥泄露,攻击者也无法伪造该成员以前的签名;成员撤消通过证书状态列表实现,只需群中心实时更新成员证书状态列表,被撤消成员其以前的签名仍然有效。

These three cladograms describe the evolutionary relation of microRNAgenes. We find the cladograms of 8-mer based on Spearman correlation and distancedefinition are consistent with the actual evolution relation among species.

所得的三种microRNA进化树与物种实际进化关系相当,其中,又以核苷多联体的Spearman相关和物种距离定义所得进化树与实际进化关系最为接近。

Application research has been done in the areas of complex functions in the continuos space, and Traveling Salesman and Task Scheduling, which are the typical issues in combined optimization.

因此对进化计算的研究具有重要的理论意义和强烈的实际应用背景目前进化计算主要有三种研究方式:遗传算法,进化策略和进化规划。

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I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援,我们正徵召国家所有各种的力量:我们的外交及发展,我们的经济力量与道德劝说,所以你们与其他军人不须要孤独地负起国家安全的责任。

Imagine yourself to be an actor in a play on the stage.

设想你自己是一个演员在舞台上表演。