查询词典 unbiased sample

When the estimator is unbiased, the numerical estimate is frequently also called unbiased.

当估计量无偏时，数字估计值也常叫做无偏的。

By means of combinatin of unscented transformation and best linear unbiased filter, a new filter named unscented transformation-best linear unbiased estimator filter was proposed to solve the above nonlinear tracking problem.

通过将无迹变换与最优线性无偏滤波器有机结合，提出一种新的BLUE滤波算法，以便解决上述非线性跟踪问题。

A software for QTL mapping—QTLMapper 2. 0 written by C/C++ language was developed. The sotftware could analyze populations of DH, RIL, F〓 and permanent F〓, and could provide unbiased estimation for all genetic main effects and/or unbiased prediction for all QE interaction effects. The software could also predict heteroses of single-cross offspring based on QTL genetic main effects and/or QE interaction effects obtained in QTL analysis of F〓 or permanent F〓 population.

用C／C++语言编写了适于分析DH群体、RIL群体、F〓群体和永久F〓群体的QTL作图软件QTLMapper 2.0，能够提供对各项遗传主效应的无偏估计和／或对QE互作效应的无偏预测，还能基于F〓群体或永久F〓群体估计的QTL遗传主效应和／或QE互作效应预测单交后代杂种优势。

The results show that when the porosity of sample was higher, compressure rate was higher and resilience rate was lower, however resilient rate of sample with higher porosity were increased notably when pressure was increased, and it tended to accord with of sample with lower porosity. The friction coefficient was higher when porosity of paper-based friction material was higher, and the friction coefficient tended to reduce and stabilize when braking pressure was increased. The friction coefficient of sample with high porosity tended to reduce and stabilize in continuous braking cycles.

结果表明：在相同载荷下，随着孔隙率增大，材料的压缩率增加而回弹率降低，随着载荷增加，高孔隙率材料的回弹率先明显增大，而后趋于稳定；在相同比压和转速下，孔隙率越高，材料的摩擦系数越大，随着比压增加，孔隙率高的材料摩擦系数逐渐降低，且不同孔隙率材料的摩擦系数逐渐趋于一致；在连续循环制动时，高孔隙率材料的摩擦系数逐渐降低并趋于稳定。

Since the standard sample and the sample have fixed positions, the error caused by platform jitter or other vibration in the scanning process can be simultaneously represented by the profile signals of the standard sample and the sample.

标准样品和样品位置固定，所以在扫描过程中，由于平台抖动或其他震动引起的误差会同时体现在标准样品和样品的形貌信号上。

The first method defines sample database by artificial operation, the second method builds one sample database and one potential sample database by the sample\'s self- training method. Some potential geometric regions are obtained by using a simple fast Hough arithmetic.

同样通过简单的快速Hough算法获取一些潜在几何区域，用对二值图像的块匹配方法对潜在的矩形区域进行识别并把它分类变成几种比分板和广告块。

The method includes the following steps: firstly, a spherical neighborhood of present sample points is established by using the geometric spherical-modelling theory and all the sample points contained in the spherical neighborhood are adopted as candidate neighbor points, thus not only preserving the effectivity of the dimension reduction capability when data sets are sparse but also getting the advantages of low-sensitivity to isolated points and good stability of the preserved topological structure; then a data relevance matrix more matching semantics can be obtained by relevance measurement based on route clusters to update the candidate neighbor points in the spherical neighborhood and optimize the regular neighborhood space of the present sample points, thus improving the phenomenon that the dimension reduction of sample sets provided with folded curved faces is apt to suffer the integrated-structure distortion in case of heterogeneous data distribution.

首先利用几何开球原理建立当前样本点的球状邻域，将包含在球状邻域内的所有样本点作为候选近邻点，不但能够保持在数据集稀疏情况下的降维性能的有效性，而且具有对孤立点敏感性不高、保留拓扑结构稳定性好的优点。然后利用基于路径聚类的相关性度量得到更符合语义的数据相关性矩阵，用来对球状邻域内的候选近邻点进行更新，优化当前样本点的规则邻域空间，改善了当数据不均匀分布时在带有折叠弯曲面的样本集上降维容易出现整体结构扭曲的现象。

The measurement system error model analysis is introduced into power system real time network state analysis as an important part for the first time, which can improve on the state estimation quality and provide the capability to monitor the operation of the measurement system; 2. The theory and algorithm of the on-line estimation and update of measurement noise variance based on the relation between the residual variance and noise variance. The statistic properties of the sample variance are discussed and the relation between the estimation precision and sample size under given confidence level is derived; 3. The theory and algorithm of detection and identification of measurement bias are presented, which is based on the relation between residual mean and noise mean. The statistic properties of sample mean are discussed and the relation between estimation precision and sample size is derived; 4. The Givens orthogonal transformation algorithm is selected to be the essential algorithm of state estimation, the fast orthogonal transformation algorithm with damp factor and the algorithm which can handle the zero injection measurements efficiently are presented; 5. The quantity analysis theory of bad data detectivity and identifibility are presented, which describes the relation between the elements in matrix W〓 and bad data amplitude and can provide the theory base for measurement system design and valuation.

一、首次将量测系统误差模型分析做为一个环节引入电力系统实时网络状态分析中，为EMS系统增加了实时监视系统运行、修正量测系统误差模型的新功能，进一步发挥了实时网络状态分析应用软件的潜力；二、首次提出了应用样本方差在线估计与修正量测系统误差方差的基本理论，讨论了样本方差的统计性质和概率分布，推导出了样本容量、估计精度和置信度之间的关系，给出了在线估计与修正量测系统误差方差的算法；三、首次提出了应用样本均值在线检测与辨识量测偏差的基本理论，讨论了样本均值的统计性质，推导了样本容量、估计精度和置信度之间的基本关系，给出了在线检测与辨识量测偏差的算法；四、在状态估计算法设计中，以Givens变换算法做为基本算法，提出了快速正交变换阻尼因子法和可以有效地处理零注入量测的混合法，并对实时应用中的一些问题进行了讨论；五、提出了不良数据可检测性与可辨识性的定量分析理论，揭示了描述量测系统配置、网络结构与参数的残差灵敏度矩阵中的元素与不良数据的幅值在可检测、可辨识能力上的定量关系，为量测系统配置设计与评价提供了理论基础；六、综合国内外最新研究成果，采用自适应自回归预测技术和稀疏矢量技术，构造了较完善的不良数据检测与辨识算法。

The results of catalytic activity show that both Ni-B and Ni-P sample have the same kinetic equation for hydrogenation of 1, 3-cyclopentadiene to cyclopentene and the same TOF. Therefore, it can be suggested that they have the similar active site. The catalytic activity of Ni-B sample is higher than that of Ni-P sample, and it is due to the more active sites of Ni-B sample having.

催化活性测试表明，Ni-B与Ni-P催化环戊二烯加氢反应对环戊二烯具有相同的动力学方程，而且两者具有相似的氢转换频率，表明两者的活性中心本质上是相似的，类金属不同导致的电子转移方向的不同仅仅影响反应的初活性，宏观活性的差别在于两者活性中心数量的不同。

PPAR γ agonist displayed obvious renoprotective action,the mechanism was complicated, it could improve the metabolism of glucose ang lipid, depress blood preasure, protect small vessels endothelium,improve the system activity of blood clotting and fibronolysis, antiinflammation, otherwise the action was more obvious with the time passed, at the early stage the effective was better,so encourage the patients to take the medicine earily; when the patients with the mediate reanl function failure, Avandia did not display significantly renoprotective action, side reaction had no difference compared to the control group,was not necessary to regulate the dose of Avandia.But because of the sample size was small, we needed a biger sample to confirm the results. We confirmed that Prol2Ala had no difference in control case,diabetic nephropathy group and diabete group,In diabetic group and diabetic nephropathy group, Ala carriers compared to noncarrier all kinds of biochemical indicators were not different,Prol2Ala did not have association with diabete and diabetic nephropathy. But because of the sample size was small, weneeded a biger sample to confirm the results.

PPARγ激动剂对糖尿病肾病具有明显的保护作用，保护作用的机制是多方面的，除了改善糖脂代谢，降低血压外，还具有保护小血管内皮，改善凝血和纤溶系统活性，抗炎症等多方面的作用，且作用随着用药时间的延长而日趋明显，在疾病的早期应用效果更佳，故提倡早期用药；对伴有慢性肾功不全的患者，罗格列酮对肾脏靶器官的保护作用显现的并不明显，但副作用与对照组无明显差异，不用根据肾功情况调整用药，但由于样本量较小，上述结论尚需大样本进行进一步证实；本实验研究得出Prol2Ala变异在健康对照组、糖尿病组及糖尿病肾病组均无显著差异，糖尿病组及糖尿病肾病组临床各生化指标与Prol2Ala变异亦无相关性，Prol2Ala与糖尿病及糖尿病肾病不相关。

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。