偏性

用EXCEL进行精密度&偏性分析质控数据处理

Application of EXCEL to Precision - Bias Analysis of Data Processing

本文分析了诱发脑电的ARX模型（带外输入的自回归模型），指出其参数的最小二乘估计（LS）的有偏性。

This paper analyses the bias of Least Squares estimation of ARX model of Evoked Brain Potential ( EP ) .

在测度弱收敛的意义下，研究了一般概率测度μ的核估计μn，得到了它的渐近无偏性、强相合性及在给定条件下的收敛速度。

The kernel estimation μ n of general probability measure μ is studied . The asymptotic unbiasedness and the strong consistency and rate of convergence under given conditions are obtained .

利用上述推广的结果，直接给出了广义线性模型中可估函数c′β的最小二乘估计c′β的唯一性和无偏性的证明。

Using this generalization , we obtain a direct proof of the uniqueness and unbiasedness on the least square estimate c ′β ~ of the estimable function c ′β in the generalized linear models .

一元Laplace分布的L1-范估计的无偏性

The Unbiasedness of L_1 Estimation of Monistic Laplace Distribution

纯方位TMA的有偏性分析

Bias Analysis of Bearings - Only TMA

缺失数据下Jackknife方差估计量的渐近设计无偏性

Asymptotic design-unbiasedness of jackknife variance estimators in the presence of missing data

本实验室选择家蚕12种不同组织器官和细胞，构建5′端非偏性cDNA文库，对每个文库大规模EST测序。

The " non-bias " cDNA libraries were constructed by directional cloning from 5 ' - end of 12 distinct tissues at different developmental stages in our laboratory ;

其次是3′端9bp的局部密码子偏性，SD序列与起始密码子ATG之间碱基数在8±3范围内与表达水平无显著关系。

There was no statistical significance between expression levels and the number of bases from SD sequence to initial codon ATG which was in the scope of 8 ± 3bp .

密码子偏性是指生物体中编码同一种氨基酸的同义密码子的非均衡使用现象，由于这一现象与遗传信息的载体分子DNA和生物功能分子蛋白质相关联，所以具有重要的生物学意义；

Codon bias refers to the nonrandom usage of synonymous codons for encoding amino acids in organisms . As it is related to the carrier molecular of genetic information ( DNA ) and functional molecular ( protein ) of life , this phenomenon implicates important biological sense .

通过精密度偏性试验（AQC试验），分析得出影响总氮测定结果的主要因素；

The main factors influencing the result of total nitrogen determination are investigated with accuracy deviation test ;

对于Tao等（1999）提出的一类线性混合效应模型，构造了随机效应密度的非参数估计，并证明了此估计量具有渐近无偏性。

Consider a kind of linear mixed effects model which was proposed by Tao et al ( 1999 ), the nonparametric estimator of the density of the random effects was established . It is shown that the estimator is an asymptotic unbiased estimator .

利用635个包含完整转座因子插入的粳稻CDS序列，对转座因子如何影响基因编码区的碱基组成及基因的表达水平，进而对基因同义密码子的使用偏性产生影响进行了详细分析。

By using 635 CDSs containing integral transposable element sequence ( TEs ), a detailed analysis on how the insertion of TEs affects gene nucleotide composition in coding region and gene expression level , and furthermore affects the synonymous codon usage bias in every genes was made .

密码子偏爱性分析表明DPVgI基因中同义密码子第三位A、T碱基的使用频率更高，且密码子偏性较低，推测为低表达基因。

The analysis on codon usage bias showed that DPV gI gene was strong bias towards the synonymous codons with A and T at the third codon position , and was low codon usage bias gene , presumed lower expression .

该多肽同其它LEA蛋白一样，在氨基酸的组成上具有偏性，即各种氨基酸残基不是等量分配，高度亲水性氨基酸含量较大。

Like other LEA proteins , the sequence had a bias in the component of amino acid . Namely , the distribution of all kinds of amino acid was different in quantity and the Polypeptide contained lots of high hydrophilic amino acid residues .

算法采用了以2为模的Sobel算子梯度建立图像清晰度评价函数的数学模型。该评价函数具有无偏性好，单峰性强，灵敏度高，在焦平面变化趋势明显等特点。

In our algorithm , we build up the mathematic model of image definition evaluation with the gradient of Sobel operator modulo 2 . This evaluation function has features of small deviation , single peak , and high sensitivity , apparent variation trend near focus plane .

通过精密度偏性试验（AQC试验），分析确定影响总磷测定结果的主要因素；对分析化验室监测数据的质量进行检验和评价。

Based on AQC test , the main factors influencing the results of total phosphor determination are analyzed so as to check up and evaluate the quality of measuring data of assay laboratory .

本文基于分数低阶统计量的原理，根据确定性平均方法，结合文中给出并证明的两个引理，对DLMP算法的估计结果的无偏性进行了理论分析和证明。

Based on the fractional lower order statistics theory , the deterministic averaging method and two lemmas introduced and proved , this thesis gives an analysis of the convergence property of the DLMP algorithm in theory .

工具变量法综列单位根检验的有偏性及其修正

The Modification to Bias of IV Unit Root Tests in Panels

转座因子对水稻同义密码子使用偏性的影响

Effects of transposable elements on synonymous codon usage bias in rice

化学实验室内部分析精密度·偏性试验和评估

Analysis of accuracy , bias experiment and estimation inside Chemistry Laboratory

碱性过硫酸钾法测定总氮的精密度偏性实验分析

Precision Bias Experiment to Monitor Total Nitrogen by Alkaline Potassium Persulfate

水质分析中的精密度&偏性分析质量控制试验

The Precision and the Deviation Test in Water Quality Analysis

20个物种同义密码子偏性的比较分析

Comparative studies on synonymous codon usage bias in twenty species

定位参数抗差估计的无偏性

The Unbiasedness for the Robust Estimation of the Location Parameters

分光光度法测定总磷的精密度偏性试验分析

AQC Test and Analysis for Determination of Total Phosphor by Spectrophotometry Method

信用违约互换是最近几年国际金融市场出现的重要的信用风险管理创新工具，由于信用风险非系统性、收益可偏性以及数据获取困难，使得信用违约互换定价的十分困难。

Credit default swap is a new financial instrument for controlling credit risk .

支持向量机及密码子偏性在序列识别中的应用

Support Vector Machine and Codon Usage for Sequence Recognition

精密度偏性分析是环境监测质量保证的重要手段

The Precision Bias Analysis is the Important Means of Environmental Monitoring Quality Guarantee

一种基于密码子使用偏性的检测型基因芯片设计方法

Method for the design of mRNA detecting genechip based on codon usage bias