查询词典 hypothetical population

In the solution process the initialization two populations, separately will select the different overlapping variation probability, after each time will iterate the sufficiency high individual carries on the first population's in sufficiency low individual with the second population in the exchange, and will preserve each center group the optimal solution to the outstanding person population, by will solve the tradition genetic algorithms to be easy to appear precociously, will be easy to fall into the partial optimal solution question.

即在求解过程中将初始化两个种群，分别选取不同的交叉变异概率，在每一次迭代完后将第一个种群之中的适应度较低的个体与第二个种群中适应度较高的个体进行交换，并且保存每个种群的最优解到精英种群，以解决传统遗传算法容易出现早熟，容易陷入局部最优解的问题。

The security problems in our country are low population growth rate and overpopulation,population quality not conforming to the requirement of social development,AIDS and other diseases threatening population health,high sex ratio,quick aging and the pressure of employment,etc.

一、人口安全问题的提出人口安全是一个国家最基本、最重要的安全问题之一，直接关系国家的整体安全、社会的持续稳定和健康发展。

Using the analysis of the distribution indexes method, the results indicated that all distribution indexes of Halostachys caspica population, Haloxylon ammodendron population and Haloxylon persicum population accorded with congregated pattern within the scales of 1m×1m、2m×2m、4m×4m、8m×8m、16m×16m、32m×32m. And the T-test evidenced that the deviation from random pattern was obvious in 1~32m scale.

通过分布型指数法分析得出，在1m×1m、2m×2m、4m×4m、8m×8m、16m×16m、32m×32m的空间尺度上，盐穗木、梭梭、白梭梭种群的各项分布型指标均符合聚集分布，并且由扩散系数偏离随机分布的差异性t值检验验证了种群在1～32m尺度上显著偏离随机分布，呈聚集分布。

The uniformity degree and rank of the population are given to measure the distribution and quality of the solutions in the population based on the characteristic. Using the uniform degree of the population as objective function and the rank as the constrained condition, the bi-objective optimization problem is transformed into a single objective constrained optimization problem. The computational equations of the charge and force exerted on the particles are presented.

针对这一特点，定义了种群的均匀度和序值，来度量种群中解的分布和质量，将双目标优化问题转化为以均匀度为目标函数，序值为约束条件的单目标优化问题；设计了双目标优化问题粒子的电荷和受力的计算公式，提出了一种新的类电磁算法求解问题。

Predictable result is that Chinas total population will reach its peak in 2024 at 14.3688 million people (total fertility rate from 1.8), the forecast results show that this model has good prediction accuracy and forward-looking, on Chinas development of appropriate population policy in order to adapt to the comprehensive construction of harmonious society demands of the population have a positive reference value.

预测的结果是我国总人口将在2024年达到峰值14.3688亿人（总和生育率取1.8），预测结果表明，此模型具有良好的预测精度和前瞻性，对我国制定相应的人口政策以适应全面建设和谐社会对人口的要求有积极的参考价值。

China's population of the salient characteristics of a large population base, rapid population growth.

我国人口的突出特点是人口基数大，人口增长快。

A highly resistant primitive cultivated species Solanum phureja was employed to generate a mapping population to perform the bulked segregant analysis for screening of AFLP markers linked with the resistance. Another population which had genetic similarity to the mapping population was used for testing of the markers achieved.

以马铃薯青枯病高抗性的原始栽培种Solanum phureja获得的二倍体群体为作图群体进行AFLP标记的初步筛选，另选一个与作图群体有较大亲缘关系和相近遗传背景的二倍体群体对所获标记进行验证。

The results showed that resistance of the different Germplasm self-chosen inbred lines to maize rouh dwarf virus have great differences ,Tangsipingtou and P germplasm population were good ,Reid population was bad ,Lvdahonggu and Lancaster population were normal.

结果表明，不同种质自选自交系对玉米粗缩病抗性有明显差异，初步认为塘四平头群和P群总体最好；较差的是Reid群；旅大红骨和Lancaster群抗感病表现相差不大。

It studies taxi passenger's daily travel behavior feature: first, it analyzes temporal distribution of them and proposes the solution of dynamic management of taxis by limiting operation period; second, through investigating the uneven spatial distribution of taxi travel demand and nonlinear correlation of travel density and population density, it reveals the shortcoming of linear matching transportion facility with population number in traditional urban transport criterion, also it questions the limited effect of the licence management for taxis, and it proposes dynamically determing taxi scale according to different traffic zones; third, through exploring the taxi travel patterns in special zones, it reveal Hong Kong citizens travel behavior in Shenzhen, which could analyze the impact of demographic feature to the travel behavior and provide scientific testimony for designing transportion service for the special group; fourth, through accurately grasping the spatial-temporal distribution of taxi travel demand, it could provide innotiative and efficient transportion service at different time and in different place, such as taxi-sharing and flexible shuttle to meet the travel demand; through pervasive data, we could inspect urban expansion and sprawl, monitor the separation of inhatitantion center and employment center and reflect the variation of population centriod and distribution; finally, it reveals how to use digital feature of inhabitant daily travel to detect abnormal condition in the city.

对出租车乘客的日常交通行为特征进行了研究：通过对出租车出行时间分布特征的把握，提出采取限时营运的方法来对出租车进行动态管理的思路；通过分析出租车出行空间分布不均匀的特征以及出行密度与人口密度之间非线性的关系，揭示了传统城市交通规范中按人数来线性配套交通基础设施的缺陷以及牌照管理对于出租车管理的有限效果，提出按照区域动态确定营运出租车规模的思路；通过特定区域出租车出行特征的分析，揭示香港居民在深圳的交通行为特征，从而分析不同人口统计特征对于交通行为的影响，为设计这个特殊群体的交通服务提供科学依据；通过对出租车出行时空分布特征精确的把握，使得我们可以在不同时间、不同地点采用创新、高效的交通服务，如合乘出租车，高级穿梭巴士来满足出行需求；通过普适数据可以监测城市的扩张和蔓延、居住中心和就业中心的分离程度以及反映人口重心与分布的变化；最后探讨了如何利用居民日常出行的数字特征来检测城市异常状态。

Sex-linkage population Used the most information principle prove the follow result: the sum of female and male information entropy less than three times of population gene information entropy, it is equal when population is reach equilibrium, and achieve the largest, from disequilibrium state to equilibrium, the entropy is swing but increase.

群体遗传变异的信息学模型研究（4）性连锁群体用最大嫡原理证明了雌性群体与雄性群体的信息嫡的和小于3倍的群体基因信息嫡，当群体平衡时相等，且达到最大。

Verbier, situated at an altitude of 1,500 meters (4,875 feet) is part of the skiing area in the Four Vallées, which offers over 410 kilometers (256 miles) of runs for all levels and 92 ski-lift installations, which can all be used with a single ski pass.

韦比尔，坐落在海拔1500米（ 4875英尺）是滑雪区四Vallées ，提供超过四一零公里（ 256英里）的运行为各级和92滑雪升降机装置，它可以被用於所有与一个单一的滑雪传递。

They had a merry time over the bonbons and mottoes, and were in the midst of a quiet game of Buzz, with two or three other young people who had strayed in, when Hannah appeared.

他们边吃糖果，边谈论糖纸上的格言，过得很愉快，正当他们与另外两、三个刚溜达进来的年轻人安静地玩文字游戏时，汉娜来了。