查询词典 hypothetical population

Those theories include:Malthusianism,the pessimistic population economic theory,the theory of long term stagnation,the optimistic population economic theory,low level equilibrium trap theory,critical minimum effort topic,optimum population theory,sustainable develo...

在此基础上，对人口经济理论演进的特点进行了总结：研究内容与不同时代所面临的主要社会经济问题紧密相关；研究领域日益宽泛；研究视野从发达国家扩展到发展中国家乃至全球范围；研究方法和研究思路的进步与完善。

Note that a very low county population can result in a misleadingly high ratio calculation (eg Mono county's 23: 100,000 population ratio is based on only 3 acupuncturists and less than 13,000 population).

请注意一个非常低的县人口可能导致误导性高的比率计算，例如（单县的23：10万人口的比率是基于只有3针灸，不到13，000人）。

The total population of a district in Beijing is predicted in this paper using Logistic Model.The ratio of population is also calculated using the mortality table.Furthermore,the labour resource and the number of old-age population are predicted combining Logistic Model with the mortality table,and relevant policies are suggested based on the above analysis.

本文用Logistic模型对北京某区的总人口进行了预测，用生命表滚动预测模型推算出了该区的人口结构比重，并利用这两个模型相结合的混合预测方法，对该区的劳动力资源和老年人口数进行了预测和分析，并在此基础上提出了相关的建议。

Set up and improve the comperhensive population management, the system of better natal and pre-natal care and better upboring, maintaining the low natality level, control the population and promote the quality of population.

建立完善的人口综合管理与优生优育体系，稳定低生育水平，控制人口总量，提高人口素质。

By 2020, China's aging population will make the working population and the ratio of non-working population, the world's worst, even worse than Japan.

到2020年，中国人口老龄化会使工作人口与不工作人口的比率成为世界上最糟糕的，比日本更甚。

Middle period up to 21 centuries, the our country will face the bearer oscular three greatest high peaks one after another, then the employment high peak and advanced age of the population total amount high peak, population turn population high peak, pollution of the environment of rigorous also turn worse a land resources can keep on the necessity of exploitation.

到21 世纪中叶，我国将相继迎来人口的三大高峰，即人口总量高峰、人口就业高峰和老龄化人口高峰，环境污染的严峻也加剧了土地资源可持续利用的必要性。

Mathematical model 3.7, 3.16 and 3.30 are the mathematical model of a equilibrium population, and they can be converted into mathematical models of panmixia population and nonequilibrium selfing population.

它可以转换为随机交配群体的数学模型和非平衡自交群体的数学模型。

By the contrast between common population and inbreeding population, we know that the sameness of them are they all take the population for the synthesis of panmixia and selfing or inbreeding.

通过普通群体与近亲交配群体的比较，群体在非平衡条件下，普通群体与近亲交配群体相同的是都把群体作为随机交配和自交或近亲交配两部分的合成群体。

In order to seamlessly combine NSGA-Ⅱ and the greatly different MOPSO, the special concepts (particle and its velocity, Pbest and leader) for MOPSO were dealt with within the scope of NSGA-Ⅱ: 1 particle in MOPSO was considered to be equivalent to offspring individual in NSGA-Ⅱ; 2 the concept of velocity fell into disuse; 3 the concept of Pbest also came into disuse. Instead of that, for each dimension of a particle, the nearest one among its nondominated individuals in parent population was used; 4 the leader of a particle was the individual with largest sparse degree among parent population or selected from parent population by binary tournament selection method, which of them taking effect lies on the predefined probability. In addition, a new concept, i.

为使这两种差异较大的算法实现无缝融合，在NSGA-Ⅱ算法范围内对MOPSO中特有的概念粒子及其速度、Pbest、引导者进行处理：1粒子对应于NSCA-Ⅱ中子代群体的个体；2不再使用粒子速度概念；3不再使用粒子Pbest概念，代之以从父代群体中为每个粒子的每一维寻找一个最近的该粒子非支配个体；4每一个粒子的引导者可以是父代群体中稀疏程度最大的个体或者是按照二进制随机竞赛选择方法从父代群体中选择的一个个体，具体哪一种方式发挥作用依赖于预先设定的概率。

For a given proportion p (where p is the confidence level), a confidence interval for a population parameter is an interval that is calculated from a random sample of an underlying population such that, if the sampling was repeated numerous times and the confidence interval recalculated from each sample according to the same method, a proportion p of the confidence intervals would contain the population parameter in question.

对于一个比例 P而言，一个群体参数的置信区间中的区间是由一个基础群体的随意样本计算出的，假如样本被重复了无数次，置信区间也根据每个样本，以同样的方法重新计算，那么这个置信区间中的比例 P 将要重新定论。

We've got to wrap it up.

我们要结束了。

This paper have described OET the use of 700 serieses of electronic type transformer , scope , feature and work principle, and for electronic type transformer with twice the interface present situation of equipment analyse the electronic type transf...

本文描述了OET700系列电子式互感器的用途、范围、特征及工作原理，并对电子式互感器与二次设备的接口现状进行分析，研制电子式互感器与WXH-11微机保护装置与传统录波器的接口部件，并分析了其在焦作电网中的实际应用中的相关问题。