抽样

In this paper,on the basis of theoretically describing mathematics model of the optimum sample plots in certain monitoring area,systematic research and analysis had been carried out through realitic instances and sampling problem of the optimum sample plots had been solved effectively.

该文在理论描述特定监测区域最优样地数学模型的基础上，通过实例进行了系统研究与分析，有效解决了最优样地的抽样问题，所得结果可用于指导生产实践。

In order to know Beijing urban residents' consciousness of tax-paying, recognition and sense of individual income tax and the understanding for the burden condition of individual income tax, this paper, on the basis of adopting sampling questionaire investigation method of meeting by chance, takes the methods of descriptive statistics, correlation analysis, etc. to analyze the condition of Beijing urban residents' individual income tax, and points out that the propaganda of the tax system is not good enough...

为了解北京市居民的纳税意识、对个人所得税的认识和感觉以及对个人所得税负担状况的理解，在采用偶遇抽样问卷调查方法的基础上，使用描述统计、相关分析等方法对北京市居民个人所得税状况进行了分析，针对我国个人所得税制的宣传力度不够，多数人不了解个人所得税的计算，以及统计口径不适合目前分析需要的现状，提出统计口径宏观测算方法和统计调查的改进意见，以期对北京市的税收建设有所帮助。

Via sampling test, comparing model of stepwise regression, calculating curve and forecast, we may know: these models is better and can be applied directly into practical safety monitoring work.

通过抽样测试法测试、并与建立的逐步回归模型比较以及拟合曲线和预测分析均表明：采用上述模型有很好的效果，可直接应用于实际工作中。

Some troubles emerge when we use regression estimator in such a case:in a continuous survey research,when the prior sample and the present sample are independent and they have different elements,we can not compute the regression coefficient.

作连续调查研究抽样时经常用到回归估计。如果前后两个样本相互独立，并且它们所包含的元素不同，就无法直接计算出回归系数。

This study conducts sampling among the golden customers and regular customers of the sample website and incorporates their opinions in product design. It discovers significant discrepancy between golden customers and regular customers in terms of their on product shape/style and material requirement.

本研究在样本网站的黄金顾客与一般顾客中进行抽样，并将其意见导入产品设计中，发现黄金顾客与一般顾客对於产品造形风格与材质要求上，都具有显著差异。

Methods］A questionnaire survey was conducted among rehabilitative patients with esophageal cancer.

方法］采用随机整群抽样的方法，对食管癌患者进行问卷调查。

We analyzed the main factors that influence on the quality of reconstruction image. These factors are filter function, projection data, sampling space and noise level in filter backprojection, and the choice of relaxation parameter, the fashion of data access, the choice of basis function and the estimate of optimum iterative times in algebra iterative algorithm.

详细分析了影响滤波反投影算法图像重建质量的基本因素(滤波函数的选取，投影数，抽样间距，噪音的大小)和代数重建算法图像重建质量的几个因素(松弛引子的选择，数据访问方式，基函数的选择，最优迭代次数的估计)。

Article 14 The auditors shall, when selecting samples, fully consider the representability of the samples, and ensure that all the sampling unit in the pool have equal opportunities of selection.

第十四条审计人员选取样本时，应当充分考虑样本的代表性，保证总体中的所有抽样单位具有均等的被选取机会。

Purpose To solve the problem of sampling within household in resident health survey and generate a representative sample.

目的 解决居民健康调查中入户后的抽样问题，产生代表性较好的研究样本。

It proposed a new way to resample time series based on residues.

提出一种新的利用误差项对时序数据样本进行BootStrap重抽样的方法。

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。