查询词典 population explosion

The population problem is one of basic our China problems, population excessive various problems for bringings perplex our lifes, the transportation blocks festival of hustle just augmentative of 1300000000 etc.s.

人口问题是我们中国基本问题之一，人口过多带来的种种问题困扰着我们的生活，交通堵塞节日时的拥挤正在增加的1300000000等等。

The combined western population in North America, the European Union and Australasia is 700m, about 10 per cent of the world's population.

北美、欧盟和澳大拉西亚等西方人口总和为7亿，占全世界人口的10%左右。

The maps are not,however,desirable and entire because all of the markers on the maps come from the no recurrent parent.The consequence is that number of the markers used for map in backcross population is never more than half in intercross population.

但是，用回交群体作图所得的图谱是不完整的，因为图谱上所有的标记都是非轮回亲本提供的，因此标记数不会超过杂交F2群体的一半。

The effect of QTL mapping was influenced by many factors including population structure and size, number of QTLs, density of genetic markers, heritability of traits etc., especially the genetic and statistic models, so it is essential to select appropriate method according to actual situations before mapping QTLs. In this study, backcross population for QTL mapping was constructed by computer simulation in order to study power of detection and mapping precision of QTLs at different levels of factors.

影响QTL 定位效果的因素很多，包括群体类型、规模、涉及的QTL 数目、遗传标记的密度、性状遗传力等等，特别是分析中使用的遗传和统计模型对QTL 检测和定位有较大的影响。

The spatial and temporal characteristics of the cultivated land change of Jiangsu Province during 1999 and 2006 were studied,and its barycenter change according to the calculation of population barycenter in population geography was calculated.

选取1999～2006年为研究时段，对此期间江苏省耕地资源的数量变化特征和区域差异进行了分析，并借鉴人口地理学中人口重心的计算方法对其分布重心的转移趋势进行了计算。

OBJECTIVE To design and develop a clinical pharmacokinetics and individual drug dosage regimens system CPKDP program for estimating individual pharmacokinetic parameters and optimizing individualizing dosage regimens using routine clinical data of plasma levels. METHODS According to the principle of population pharmacokinetics and Bayes" formula, CPKDP program was written with FOXPRO 2.6 and BORLAND C++ 3.1, and was run on 486 microcomputer with UCDOS 5.0. RESULTS CPKDP program was adapted for drugs with different characteristics of pharmacokinetics, and for single dose or multiple dose administration. Using 1 or 2 measured drug concentrations, individual patient"s pharmacokinetic parameters were estimated based on population-average pharm-acokinetic parameters. CONCLUSION CPKDP program is applied for estimating pharmacokinetic parameters and optimizing drug therapy in individual patients.

目的为利用临床常规监测的血药浓度数据估算病人的个体药动学参数，优化给药方案，设计、研制了临床药动学给药个体化系统CPKDP程序方法依据群体药动学原理及Bayes公式，CPKDP程序用FOXPRO 2.6和BORLAND C++ 3.1开发，在希望汉字系统UCDOS 5.0平台上运行结果CPKDP程序适用于具有不同药动学特征的多种药物，适用于不同给药途径的单剂量或多剂量给药在群体药动学参数的基础上，结合病人个体特征，以1，2个血药浓度作为反馈，即可拟合估算个体药动学参数，优化给药方案结论经初步应用，CPKDP程序是应用Bayes反馈法开展临床个体化给药工作非常实用的工具

We should correctly understand China's population aging of the formation, basic features, Development trends and possible socio-economic consequences, more to be cognizant of the aging of the population and sustainable socio-economic operations development.

我们既要正确认识中国人口老龄化的形成原因、基本特征、发展趋势以及可能产生的社会经济后果，更要弄清人口老龄化对社会经济运行及可持续发展的影响。

Logistic single population model is important for studying the increasing laws of the biological population in limited space.

Logistic单种群模型是研究有限空间内生物种群增长规律的重要数学模型。

One of the theoretical issues arising from any pesticide is the effect of a killing substance on the target population. Because a target population is a biological entity, and as such, subject to evolutionary and ecological processes, evolutionary ecologists would predict that a substance designed to kill insects would at the same time act as a selection pressure for resistance to the same substance.

理论上，我们需要关注的问题之一是，杀虫剂对目标群体杀伤作用的影响，因为，目标群体属于一个生物体系，同样需要遵从进化和生态学过程，进化生态学家认为，杀虫剂用来杀虫同时，也是一种针对杀虫剂抗性的选择压力。

Events,Operation and Relation of Sets, Classical Probability, Geometrical Probability , Statistical Stability of a Frequency, Axioms of Probability, Conditional Probability, Total Probability Theorem, Bayes' Rule,Independent Events,Independent Repeated Trials, One Dimensional Random Variables, Discrete Random Variables, Distribution Function of a Random Variables , Continuous Random Variables, Normal Distribution, Distribution of a Function of a Random Variable, Multidimensional Random Variables, Joint Distribution Function, Marginal Distribution Function,Discrete Two—Dimensional Random Variables,Continuous Two—Dimensional Random Variables, Independent Random Variables, Distribution of Functions of Random Variables,Expectation,Variance, Covariance, Coefficient of Correlation, Bivariate Normal Distribution, Law of Large Numbers, The Central Limit Theorems, Sample and Population ,Chi—Squared, T and F Distributions , Sampling Distributions , Point Estimation , Interval Estimation , Testing Hypotheses , A Test of Significance for Parameters in a Single Sample From a Normally Distributed Population , A Test of Significance for Parameters in Two Sample From Normally Distributed Populations .

本课程的主要内容：概率的概念与运算、随机变量及其分布、随机变量的数字特征与极限定理、数理统计的基本概念、估计和检验的基本方法，随机事件与概率随机事件、事件的关系与运算、几何概率、统计概率等，条件概率、全概率公式、贝叶斯公式、事件的独立性、二项概率公式，随机变量的概念、离散型随机变量、随机变量的分布函数、连续型随机变量、随机变量函数的分布，多维随机变量及其分布函数、边缘分布函数、随机变量的独立性、二维随机变量函数的分布，数学期望、方差、协方差和相关系数、大数定律、中心极限定理，总体与样本， X 2-分布、 t-分布和 F-分布，统计量及抽样分布，假设检验的基本概念、单个正态总体参数的显著性检验、两个正态总体参数的显著性检验。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。