查询词典 unbiased sample

By combining some experts' viewpoint and the author' s research, the author discusses such general issues as the use of biased and small sample, the lack of potential variables, exaggerating of statistical diagrams, reflect on reliability and significance test, causality, and so on.

本文从心理学研究过程的内在逻辑出发，探讨了在心理研究中应用统计应该注意的问题和可能遇到的误用现象：有偏样本与小样本的使用，潜在变量的缺失，欺骗性的统计图表，量表信度与统计显著性检验的考量，事后解释的谬误，统计关系与因果关系等。

Obvious energy transfer was observed without using a biased field in the sample, which proved that the PR effect exists in the material.

以He-Ne激光器为光源，我们搭建了双光束耦合实验平台，在不加电场条件下，观察到了明显的能量转移现象，验证了光折变效应的存在。

The algorithm combines active learning, biased classification and incremental learning to model the small sample biased learning problem in relevance feedback process.

该算法将主动式学习、有偏分类和增量学习结合起来，对相关反馈过程中的小样本有偏学习问题进行建模。

Researchers who analyze this data set should be attentive to the issue of biased sample and think about the methods to correct the bias before drawing conclusions or making inferences.

综合样本流失与访问效应的检视，整体而言，TEDS固定样本的成功样本是偏差样本，在使用时必须加以注意或处理。

The result shows that the Singapore airline route does not have characteristic of the small-world network. However, the present paper chooses the inappropriate sample resulting in biased result through careful inspection of the calculation process, so the hypothesis that the network connectivity pattern has the characteristic of small-world network cannot be rejected by the experiment result.

结果显示新加坡航空公司之飞机航线网络似乎具备小世界网络之特性，但再检视推算过程发现验证结果的符应是样本选择偏误所造成的，因此本文认为实证结果并无法完全推翻全球城市网络结型态是具备小世界特性之研究假。

During the PL measurement excited by 405nm diode laser, the decreasing PL intensities of the biased LED sample were observed by increasing the measurement temperature that was caused by the thermal and tunneling effect to have the lower internal quantum efficiency.

在光激发萤光系统上，以405nm波长的雷射作为激发光源，在外加偏压测试环境下可以发现室温(300K)强度因载子热效应与穿隧效应而快速递减，导致内部量子效率较实际值低。

In this paper, each of single data stream that is included in data streams has same attributes set as other,the unit of single data stream is tuple,and same attributes set is included in each of these tuples.Reservoir algorithm is used to sample from these single data stream respectively,then some multiple snapshot windows are constructed,the relationship between these single data stream and multiple snapshot windows is bijective mapping,the relationship between attributes that are included in tuple and snapshot windows that are included in relative multiple snapshot windows is bijective mapping,and the relationship between basic windows that belong to same snapshot window and the attribute values that come from different single data stream is bijective mapping as well,that is,these attribute values come from same attribute that is comprised by different single data stream.

针对以元组为单位流入的具有相同属性集的多支单数据流组成的多数据流，提出了分别对每支单数据流进行蓄水池抽样，构造一一对应于各单数据流的若干个多快照窗口，即两者之间是双射关系，可以将多快照窗口串行置于主存中，将元组包含的属性与多快照窗口中的各个快照窗口一一对应，且使得同一快照窗口中的各基本窗口与取自其对应的单数据流的属性值样本一一对应，然后对这些相互独立的样本进行方差分析。

The works in the project just done can be summarized as five respects.(1) A device was designed to fabricate the asymmetrical resonant cavities by a pendant drop. A series ARCs with variable parameters provides a valuable experimental method for investigating the characteristics of ARCs.(2) The relationship between the number of active modes and the shape parameters in an ARC was investigated. The experimental lasing threshold was compared with theoretical result, the good agreement between two shown that it was the decrease of the number of active modes in an ARC that decreased lasing threshold.(3) Dye lasing gain was used to enhance the signals of stimulated Raman scattering of the weak gain Raman modes in a circular cavity made by a pendant drop, the instantaneous SRS spectra of weak gain Raman modes in ethanol was obtained by this new method.(4) The SRS signals of minority compound in a binary chemical complex was obtained by using dye lasing gain method. The detection concentration of minority compound was reduced to an order compared with normal SRS method.(5) A cylindrical circular cavity was formed by a liquid jet, which was used to reduce the pump intensity required for laser induced plasma spectroscopy. The limit of detection of trace element in aqueous sample was greatly decreased by this new method.

我们设计并成功制作了使悬垂液滴连续变形的装置，用此装置可以方便地改变非圆对称谐振腔的几何参数，为ARCs的研究提供了一种有效的实验方法；研究了ARCs中活性模式数和变形参数间的变化规律，激光阈值的数值计算结果和激光辐射的实验结果作了比较，二者吻合的曲线说明ARCs中活性模式数量的减少是受激辐射放大阈值降低的原因；在由单元化合物构成的微型圆对称谐振腔中，首次尝试用"激光增益"增强弱增益拉曼模式的受激拉曼散射信号，获得了乙醇分子中弱增益拉曼模式的瞬态SRS光谱；在由二元混合物构成的微型圆对称谐振腔中，用染料的激光增益增强了少量化合物的SRS信号，把少量化合物的SRS信号探测浓度降低了近一个数量级，在SRS应用于瞬态过程的组份分析方面做了卓有成效的探索；用石英毛细管形成的稳定液拄构成拄形谐振腔，降低了激光诱导等离子体光谱需要的激励能量，有效地降低了水相样品的痕量元素分析极限，为LIPS应用于微量元素的化学分析开拓了一条新的技术路线。

Firstly, single factor analysis, including Independent-sample T Test for scale variables, Chi-square Test for binomial and nominal variables, Nonparametric Test for ordinal variables, was used in 60 clinical variables.

先将所调查的60个临床指标进行单因素分析，连续型变量采用独立样本t检验(Independent-Sample t Test)，二分类变量和无序变量采用卡方检验(Chi-squareTest)，有序变量采用非参数检验(Nonparametric Test，NPar)。

Sample Size Determination is commonly encountered in modern medical studies and statistical analysis for two independent binomial experiments.

样本容量的确定在现代生物医学研究以及在对两个独立的二项实验进行统计分析时，是经常遇到的一个问题。

I'm going tor her!

我这就去救她！

As rise are design to help keep a several toney , a brain chemical at continues lever.

SSRI被设计来帮助保持血液中的复合胺即在大脑中一个连续水平的化学物质。