分层抽样

提出了Latin抽样与分层抽样相结合的复合抽样方法，对于提高抽样精度和效率都有较为明显的作用，特别适用于结构裂纹概率的仿真和其它应用工程仿真计算。

The paper proposes Latin sampling combined with the stratified sampling of variance reduction technique to calculate accurate fracture probability .

分层抽样和重要抽样方法是两种常用的蒙特卡罗统计方法，Markov链使用模型是利用数学模型精确地描述软件的使用。

Stratified sampling and importance sampling are two Monte-carlo statistic methods . Software Markov-chain usage model is a mathematical model and preciously describes the usage of software .

分层抽样条件下Logistic回归模型的参数估计方法

Parameter Estimation Method of Logistic Regression Model in the Condition of Stratum Sample Survey

方法采用与规模大小成比例（PPS）的两阶段分层抽样法选择了583名城镇居民和429名农村居民，由调查员对调查对象进行一对一的问卷调查。

Methods A two-stage cluster sampling with probability proportional to size ( PPS ) was conducted .

方法采用分层抽样，利用自行设计的问卷进行资料收集，原始数据用SPSS统计软件进行录入与分析，立要的统计方法为一般性描述、X~2检验。

The primary data was collected by self-designed questionnaire and analyzed by SPSS . The main statistical methods included general description and X2 - test .

用分层抽样和复Morlet小波识别短样本模态参数

Modal parameters identification for short data sequences based on stratified sampling and optimism complex Morlet wavelet

针对这些问题，本文给出了使用分层抽样和重要抽样方法、并基于Markov链使用模型的软件可靠性加速测试。

To resolve these problems , we describe the software reliability accelerated test which uses the method of stratified sampling and importance sampling and is based on Markov usage model .

在期现套利研究中，分析了行业分层抽样和ETF基金组合这两种现货指数复制策略。

During future-spot arbitrage analysis , two different types of index replication method including industry stratified sampling and ETF portfolio replication are investigated .

针对科研工作量考核中的考核标准确定及考核结果的分析等问题进行了研究，主要包括：根据分层抽样原理，采用Brewer方法设计了制订考核标准值的抽样调查方案；

The research work on the evaluation standard in evaluating the amount of research work and the method of analysing the evaluation results is presented .

方法于2000年采用随机分层抽样，调查312户家庭的963人，以RIA法检测HBsAg、抗HBs和抗HBc。

Methods HBsAg , anti HBs and anti HBc were detected in 963 sera collected from 312 families by RIA , which were selected by multistage and stratified cluster sampling .

方法在沈阳市城区选取6所中学，分层抽样1200人，采用匿名问卷方式调查最近1a内的健康相关危险行为。

Methods An anonymous questionnaire survey was conducted among a stratified sampling of 1 200 students from six junior high schools to study the health risk behaviors occurred during the last year .

第三阶段运用随机分层抽样方法，对29个包括省、市、县三级CDC的668名工作人员进行了现场问卷调查。

The third stage is to conduct the survey by on-the-spot questionnaire survey to 668 professionals in 29 CDCs at three different levels : provincial , municipal and county levels using a random sampling method .

而SS-MC方法将分层抽样技术引入状态树搜索过程来实现大规模网络的可靠性评估。

SS-MC introduces stratified sample into state-tree search to solve the reliability evaluation of large-scale problems .

在此基础上，采用分层抽样技术和综合评价法，构建了基于车辆行驶时间（VHT）加权的分层次交通拥堵指数（TCI）模型。

Then , a weighted vehicle-hours-traveled ( VHT ) based traffic congestion indices ( TCI ) model was developed by using stratified sampling and comprehensive evaluation method .

笔者以股票和ETF基金为两种资产池选择现货组合，分别以完全复制法、市值抽样法、分层抽样法、逐步回归选择法和最小跟踪误差法计算组合权重。

The author shares and etfs fund for two of the asset pool choose spot combination , respectively by a complete copy method , market capitalization weight method , the stratified sampling method and tracking error method to calculate the minimum combination weights .

方法：以群体分层抽样法，采用中国身心健康量表、艾森克个性问卷（EPQ）、防御方式问卷（DSQ）、生活事件量表（LES），入学时对541例学生进行一次性测试。

Method : 541 fresh university students selected randomly were tested by China Psychosomatic Health Scale , the Eysenck Personality Questionnaire ( EPQ ), the Defensive Style Questionnaire ( DSQ ) and the Life Events Scale ( LES ) during their registration .

方法采用分层抽样方法，分别抽取新乡市3所大学临床医学、动物医学及体育专业的607名大学生为研究对象，用症状自评量表（SCL-90）分别评定其心理健康水平。

METHODS : Totally 607 students , majoring in clinical medicine , veterinary medicine and physical education from 3 universities in Xinxiang city , were selected by the method of stratified sampling , and their mental health levels were assessed by using symptom checklist 90 ( SCL 90 ) .

方法通过分层抽样选取福建省三所高校大学生678名，选用自编《大学生自我宽恕问卷》、《简易应对方式问卷》（SCSQ）以及《匹兹堡睡眠质量指数》（PSQI）对被试进行问卷调查。

Methods With stratified sampling , 678 college students in three universities of Fujian were questioned with the self-designed self-forgiveness questionnaire of college students , Simplified Coping Style Questionnaire ( SCSQ ) and Pittsburgh Sleep Quality Index Questionnaire ( PSQI ) .

在Longstaff和Schwartz（LS，2001）提出的基于多项式函数逼近的美式期权仿真定价基础上，给出美式期权重要性抽样仿真方法&顺推法及其具体算法，同时给出重要性与分层抽样相结合的算法。

Based on polynomial function-based pricing method of Longstaff and Schwartz ( LS , 2001 ), one importance sampling for pricing American option & forward tracking and its arithmetic was proposed . And the importance sampling arithmetic combining with stratification sampling was proposed , too .

重积分计算的分层抽样原理

The principle of stratified sampling for evaluation on the multiple integrals

普通高校大学生的心理健康水平：分层抽样调查

Mental health levels in university students : stratified sampling study

一种用于蠕变损伤失效概率计算的分层抽样方法

A New Stratification Sampling Method for Creep Damage Failure Probability

设计：分层抽样，随机分组对照，量效分析。

DESIGN : Grade sampling , randomized controlled quantitative analysis .

方法对样本单位采用分层抽样方法进行问卷调查。

Methods Investigate the medical staffs of sample hospital with survey forms .

分层抽样技术在应收账款审计中的应用

The Application of Streaming-sampling Technique in the Auditing of Receivables

辅以分层抽样样本的等容量整群抽样方法

Cluster of Equal Size Sampling Supplemented by Stratified Sample

采用分层抽样方法，对36所学校、156间教室进行卫生学调查。

Hygiene investigation was carried out in156 classrooms of36 schools with stratification sampling .

分层抽样可以减少由简单随机抽样造成的抽样误差。

Stratified sampling can reduce the sampling error associated with simple random samples .

多元分层抽样样本量的分配

The allocation of sample size of multivariate stratified sampling

提出基于分层抽样的短样本模态参数识别方法。

Stratified sampling technology-based modal parameter identification from short data sequence is discussed .