• Meanwhile, to solve optimal reduction quickly, GEP-ARRS implements dynamic population creation strategy to reduce gene length of GEP constantly in order to accelerate solution efficiency of GEP.

    为了更快求解最优约简,GEP - ARRS算法利用动态种群生成策略不断缩小GEP基因长度加快GEP算法求解速度。

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  • Observation of the dynamic population changes in Trichoderma spp. and the pathogen of the disease showed that Trichoderma spp. had some inhibitory effect on the pathogen of the disease in the soil.

    并测定无菌土病原菌种群动态变化结果表明木霉土壤病原菌一定抑制作用

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  • Using a dynamic economic model with a life_cycle hypothesis, this paper examines the effect of population change on economy.

    本文一个带生命周期假说经济动态模型全面考察了人口变动经济影响

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  • With a population of a little over one million people, it is both dynamic and relaxed.

    圣迭哥人口数量高于一百万。既是个生机勃勃的城市,又是您放松身心场所。

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  • We investigate the dynamic behaviors of a stage-structured pest population model with birth pulse and impulsive spraying pesticide at fixed time.

    研究一个具有阶段结构,脉冲生育固定时刻对其喷洒杀虫剂害虫种群模型动力学性质。

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  • Total arable land dynamic balance equation stipulates the control subject for the regional arable land system un-der the base of predictable technology and population pressure.

    可预知技术进步人口压力背景下,耕地总量动态平衡方程区域耕地系统的状态规定调控目标;

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  • The population dynamic and composition of predatory enemiesThe results indicated 28 species of predators belonging to 7 orders, 15 families, were found in coton fields.

    棉田捕食性天敌组成种群动态经过系统调查,初步得出该垦区捕食性天敌隶属715科28

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  • This paper analyses the dynamic relation between population change and urban man-made landforms of Dalian City.

    文章以大连市为例,研究人口变化城市人工地貌动态关系。

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  • There are dynamic and closely relative relations between family changes and child-bearing behavior of the population.

    家庭变迁人口生育行为变化呈动态关系密切相关关系。

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  • The dynamic combination of GA and ACO in the strategy is realized by the difference of population similarity in different iterations.

    策略通过不同迭代次数种群相似度实现两种算法动态融合

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  • The time of dynamic nitrogen adjustment were determined by regular patterns or by the comprehensive evaluation of soil mineral nitrogen concentration and rice population status.

    氮素动态调控时期高产栽培常用追肥时期根据水稻群体状况土壤矿质浓度综合判断确定,追氮量由模型计算获得。

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  • With a case study of Jinshan District, the article has analyzed the approach, economy effect, dynamic mechanism and thinking on the control of the population agglomeration in Shanghai Outer Suburbs.

    本文立足于上海远郊区金山,分析了远郊区人口集聚途径经济影响动力机制以及调控思路

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  • The paper discusses the dynamic characteristic of population supporting capacity of land from three aspects; the threshold area per capita, the absolute supporting capacity and the relat.

    文章分别人均耕地阈值绝对承载力相对承载容量三个不同角度来探讨分析了山西省土地资源人口承载力动态变化特征

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  • The classical fish population dynamic models were largely on the basis of stable population behavior assumption.

    经典鱼类种群动态模型是以稳定种群行为为基础的。

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  • This is only natural, for population was everywhere one of the most dramatic and dynamic economic variables and fluctuations in population were at least in part a function of harvest variations.

    这个自然因为人口富有戏剧性动态经济变量,人口的波动至少部分结果变量一个函数

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  • The means of dynamic genetic operators and population control were used to make the evolution escape from localization trap quickly.

    采用动态遗传算子设计群体规模控制方法使进化更快速跳出局部最优。

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  • The population dynamic of Tsuga tchekiangensis in Wuyishan Nature Reserve was studied and its age structure, the life table, survival curve, mortality rate and killing power curve were analyzed.

    武夷山自然保护区南方铁杉种群动态进行了系统研究,绘制种群的年龄结构,编制静态生命,分析存活曲线死亡率曲线损失度曲线。

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  • The method of dynamic comparable tree classification was introduced to study the population structure of natural Japanese red pine forest in Northeast China.

    本文采用动态可比性林木分级研究了东北东部天然赤松种群结构

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  • Both static and dynamic comparative studies reveal that production polarization in China is not high and population polarization is too low.

    静态比较分析发现我国生产极化作用人口的极化作用

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  • The optimal control problem of linear population dynamic system with age-structure in periodic environment was investigated.

    周期环境下,研究一类具有年龄结构种群线性动力系统控制问题

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  • Reproduction and mortality are two primary factors to affect population quantity dynamic.

    种群数量季节消长主要繁殖死亡因素相互作用的结果。

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  • The convergence property and dynamic characteristics of the newly proposed population migration algorithm for solving global function optimization problems are analyzed by means of probability.

    概率论分析了提出求解函数全局优化问题人口迁移算法收敛动态特性

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  • The results indicates: 1) In contrast to population size, the change of consumption patterns caused by growth of income level has a more direct effect on the dynamic change of marine fisheries;

    实证研究表明:①收入水平提高所引起消费方式转换人口规模直接地影响海洋渔业资源的动态变化

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  • The basic ecological data of the leopard, such as the distribution, population and it's dynamic, behavior, prey, is least known for lacking of a long-term study.

    由于长期缺乏有效科学调查,目前对分布种群动态行为猎物现状基础信息不清。

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  • Objective The study aimed to learn the population quantity and dynamic of Populus pruinosa in Tarim basin.

    目的了解塔里木盆地灰叶胡杨种群数量动态

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  • Objective The study aimed to learn the population quantity and dynamic of Populus pruinosa in Tarim basin.

    目的了解塔里木盆地灰叶胡杨种群数量动态

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