查询词典 unbiased sample

The dose of γ-irradiation had significant influences on shelf life of boiled dumplings under chill state. The value of volatile basic nitrogen of control sample excessed the trade standard after one week. The value of total acidity of control sample excessed the trade standard after four weeks.However ,except TBA of sample treated with 5 kGy excessed the trade standard after irradiation, other properties of treated sample were all well within the acceptable level throughout storage period.

未辐照处理产品贮存至 7 天时挥发性盐基氮含量超标，除 5kGy 辐照产品的 TBA 值在贮存前期超标外，其他各辐照处理产品各项安全质量指标在 21 天贮存期内均未超标；与对照样比，剂量越高，所分析指标变化越小；对照样只有 7天的货架期；2 和 3kGy 辐照在 14 天时感官评分值降至可接收值底限；4kGy 表现出最佳贮藏效果，可获得 21 天的货架期。

This system can not only manages many batches of data, but also produces the code automatically, creates the random inner sample according to the percent, inserts the manipulative sample and standard sample, calculates the inner qualified rate and the offering rate, protracts the chart of standard sample quality control in time, imports and exports the inner data, and outputs the artistic analysis report according to the user.

系统不仅可以同时管理多个批次样品的数据，也可以自动实现样品编码、内检样按指定比例随机生成、地调局监控样和国家标准样插入、内检合格率和报出率计算、标准样质量实时监控图绘制以及对送样单和分析结果等进行自动导入和导出，还可以根据用户的需要输出美观的分析报表。

We prepared sample l, sample 2 with singlecoil. and sample 3, samPle 4 with two series coils. In this paPer we discussed thefrequency-dependence of theis inductance,resistance and quality factor in arange of l00MHz-l0GHz.

本实验中制作了单个线圈的样品1和样品2以及串联的样品3和样品4，文中报告了这些薄膜电感的电感、电阻和Q值在100MHz-10GHz范围内的频谱特性。

The paper presents a new filling-sample method by which the sample quantity filled in a box depends on the energies of γ-rays to be measured. The detection efficiencies of HPGe detector were calculated by using Monte-Carlo method for various γ-ray energies and at various soil sample quantities in a box, and the optimal filling-sample quantities for different-energy γ-rays from radioactive nuclides of 238U, 232Th, 226Ra, 40K, are respectively obtained.

本文提出了样品装量与待测γ射线能量有关联的装样方法，并用蒙特卡罗方法模拟计算了不同能量γ射线的探测效率与样品装量之间的关系，得到用HPGe γ谱仪分析238U、232Th、226Ra和40K等放射性核素活度各自的最佳装样量。

Describes general methods of point and interval parameter estimation and the small and large sample properties of estimators: method of moments, maximum likelihood, unbiased estimation, Rao-Blackwell and Lehmann-Scheffe theorems, information inequality, asymptotic relative efficiency of estimators.

点估计和区间估计的一般方法，估计量的小样本和大样本性质：矩法，极大似然估计，无偏估计，Rao-Blackwell 和 Lehmann-Scheffe 理论，信息不等式，渐进相对有效估计量。

We discuss asymptotically best linear unbiased estimators of the Logistic population based on selected order statistics and give the formula of computing the ABLUE, the variance and the covariance of the ABLUE in limit, and properties of the ABLUE, and so on. We give the optimum chosen of spacing which is the ABLUE with maximum asymptotic relative efficiency based on complete sample when selected order statistics number is less than 10, and obtain its maximum asymptotic relative efficiency.

讨论基于Logistic总体Ⅱ型截尾样本的若干个样本分位数的总体分布参数的近似最佳线性无偏估计；给出了该近似最佳线性无偏估计的计算公式，估计方差与协方差的极限表达式及估计量的大样本性质等；给出了全样本，样本分位点个数固定，但不超过10情形下，使上述近似最佳线性无偏估计有最大相对联合估计效率时，样本分位数选取法及最大相对联合估计效率；为大样本情形下，该近似最佳线性无偏估计的应用提供了理论依据。

This article estimates the extreme loss distribution with extreme value theory, estimates the shape parameter with HKKP estimator, which is unbiased to small sample data, selects the right threshold by selecting smallest mean square error of the estimated cumulative distribution function and empirical cumulative distribution function and based on the extreme value theory method, this article estimates the extreme loss distribution and the p-percentile operational loss under certain believe range for Chinese commercial banks, then calculates the operational risk supervise capital.

本文利用极值理论对中国商业银行操作损失极端值分布进行估计，针对尾参数估计的来用传统Hill佑计对小样本数据容易产生偏倚的情况，提出了采用Hill佑计的改进―小样本无偏估计的HKKP佑计来估计操作损失的尾参数，针对由于阈值确定不准确导致结果偏差大的情况，采用最小化估计的累计概率分布与经验累计概率分布平均平方误差的方法确定较精确的阈值，估计出给定置信水平下操作风险损失的分位数，从而使得中国商业银行操作风险监管资本的测定成为可能。

Then the best linear unbiased estimate method for interval data of normal distribution, Weibull distribution, extreme value distribution or other location-scale parameter models is presented. The presented method has higher precision, and solves the problem of reliability assessment with small sample of storage life.

在此基础上，提出一种区间数据最佳线性无偏估计方法，并对正态分布、极值分布、Weibull分布等常用的位置一尺度分布进行讨论，该方法能够对产品贮存寿命进行小样本预测和可靠性评定。

In a simple random sampling, the sample mean is an unbiased estimate of the population mean.

在简单随机抽样中，样本均值是总体均值的无偏估计。

Care should be taken to obtain an unbiased sample.

要取得一个真实无误的样本，须应仔细从事。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。