查询词典 methods of sampling

Methods:4640 children under 5 years old by the method of random sampling in four blocks in communities of Liuzhou was conducted , to measure their heighs and weights.Then do regression questionnaire surveys in some parents of these children.

在柳州市四个城区采取随机整群抽样的方法抽取5岁以下儿童共4640名进行身高体重测量及对其中部分儿童家长进行回顾性问卷调查。

Another method is fault location algorithm using short data window in the calculation. Because the saturation time of current-transformer lag behind the instant of fault occurrence, it is possible to determine the fault location utilizing the sampling data prior to the saturation. The simulations showed that both of the methods can solve the problem of current-transformer saturation.

方法二是短数据窗定位算法，通过大量仿真发现电流互感器的饱和要滞后于故障短路时刻，短数据窗法就是抢在互感器饱和之前，利用未饱和的有效数据来计算故障点位置。

In the course of the study,it was found that using different sampling methods would make different kinds of volatiles,even the relative content would not remain the same.

然而，在实际研究中人们发现不同的采集方法直接影响到挥发物的种类和它们之间的比例关系，从而给这一领域的研究带来不确定性，甚至误导。

Methods By using sampling investigation, three countries were selected in Yan'an, pupils' thyroids were examined by palpation and B-ultrasonograph; pupils and women were determined of their urinary iodine and the iodine salt in families; the students in the fifth grade and women of childbearing age and examined 6 ～ 14 year-old pupils'IQ.

用抽样调查的方法随机抽取了延安市3县，触诊和B超检查甲状腺情况，测定小学生及育龄期妇女尿碘，测定用户家中食用盐碘含量，对5年级学生及育龄期妇女进行问卷调查，测试6～14岁学生智商。

Methods: From June to December, 2007, sampling and monitoring all levels' medical institutions including indoor air, surface of object, the medical staff hands, using disinfectants and sterilization of medical items, according to "Hospital Disinfection Hygiene Standards" and "Technical Rules of Disinfection" in all district.

2007年6~12月对全区各级医疗机构的室内空气、物体表面、医护人员双手、使用中消毒剂、灭菌医疗用品等按《医院消毒卫生标准》及《消毒技术规范》进行了采样和监测。

Two methods( moment estimator ,bootstrap estimator) are presented for estimating the number of rare species by the sampling of quadrats.

利用矩估计和一个稳健估计方法来处理植物学家在林地的地面植被群落调查数据。

Methods: The investigation was made among 5204 persons of 1798 households in 3 city propers of Hebei Province by Cluster and stratified sampling method.

本次调查采用多阶段分层整群抽样的方法，共抽取了全省样本地区3个城区(分别是石家庄市长安区、唐山市路北区、张家口市桥东区)，共调查住户1798户，调查人口5204人。

The qualitative methods employed in this study included pretest and posttest, concept map, interview and learning journal. Twelve students were chosen by a purposive sampling method from the class. According to their Raven's Standard Progressive Matrices Testresults, the students were classified into low level of 3, medium level of 6 and high level of 3 with even number of gender. They were interviewed individually about the teaching activities designed by the researcher for this study. The findings were summarized as follows

本研究先采方便取样，选取台北市内湖某国小五年级27位学童为研究对象，进行资料搜集与分析，另采立意取样，依据瑞文氏测验(Raven's Standard Progressive Matrices Test，以下简称SPM)，选取低推理能力3人，中推理能力6人，高推理能力3人，共计12人，男女各半；利用CMDA、前后测以及一对一多次的诊断性晤谈，深入分析 12名访谈对象在教学前、后，对「物质与热」单元的概念学习历程。

Methods By method of stratified random cluster sampling, a total of 1822 children and adolescents of Tibetan, hang and Han nationalities were recruited in A-ba area in Sichuan. Their finds height, sitting- height, knee-height and forearm length were measured. Growth and development of bone were analyzed.

采用分层随机整群抽样的方法，测量四川省阿坝州7~18岁藏、汉、羌族1822名男女儿童少年的身高、坐高、前臂长和膝高4项指标，并对其骨骼生长发育状况进行比较分析。

Methods Collecting basic information of 67 community health service institutions applying method of self-filling questionnaire sampling, inputting data with Epidata 3.02, analyzing with EXCEL.

方法采用自填式问卷抽查的方法，收集67家社区健康服务机构基本资料，采用Epidata3.02建立数据库并录入数据，用Excel进行分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。