查询词典 error model

First, sequential tomograms of the hip are obtained from a CT scan; secondly, an accurate and automatic method is used to extract the profile of the acetabulum; thirdly, a hybrid method is utilized to gather fiducial marks on the acetabulum; fourthly, bulky error sampling points are removed. Finally, an ellipsoid fitting method is used to fit the ellipsoid model of the femoral head. Two male sufferers with different necrosis extents are chosen as experimental subjects for contrastive simulation.

首先利用一种精确的自动分割方法在髋骨部位CT序列图像中提取髋臼轮廓；然后使用基于等距栅格采样法与辐条式采样法相结合的混合采样法得到髋臼凹面的空间坐标点集，并剔除其中的误差采样点；最后采用基于二次曲面一般方程的方法拟合原始股骨头椭球面模型。

By the modem time series analysis method, based on the ARMA innovation model, under the linear minimum variance optimal information fusion criterion, three distributed fusion steady-state optimal Kalman filters, predictors and smoothers weighted by matrices, scalars, and diagonal matrices are presented for multisensor systems with correlated input and observation noises, and with correlated observation noises. The Lyapunov equations and formulas of computing local filtering, predicting and smoothing error variances and covariances are given, which are applied to compute optimal weights. The corresponding three distributed fusion Wiener state estimators are also presented.

应用现代时间序列分析方法，基于自回归滑动平均新息模型，在线性最小方差最优信息融合准则下，对于带相关输入噪声和观测噪声和带相关的观测噪声的多传感器系统，提出了按矩阵加权、按标量加权和按对角阵加权的三种分布式融合稳态Kalman滤波器、预报器和平滑器，其中提出了局部滤波、预报和平滑估值误差方差阵和协方差阵的Lyapunov方程和计算公式，它们被用于计算最优加权，也提出了相应的三种分布式融合Wiener状念估值器。

On the condition ,for simpling the terrain model ,the paper gives a detailed algorithm by takeing gemotry and visual acuity as error criterion to decrease the load of computer.All these ,the result will realize the purpose of increasing the scene frame rate.

在此基础上，论文利用一种基于几何和人眼视觉空间的混合误差判别准则对地表网格模型进行了一定的简化，并以此来降低计算机的处理数据量，达到快速的场景生成。

The paper study relation of tree pattern and BRDF of the foliage canopy through the mechanism of multiple-angle remote scening,the uniform index was used to continuously describe forest pattern and find the relation of them.Based on the relation,the error that is from the old GO model which only suppose foliage colony be random distribution was corrected.

为充分发挥多角度遥感技术在森林资源监测过程中的作用，首先需要认识遥感信号产生的机理，了解植被冠层辐射传输的过程，建立合适的数学模型进行定量描述，最终达到从遥感信号中提取植被信息的目的。

Simulation results show that the distributing capacitance of these differential capacitance sensors, the zero potential of the rotor and the model error are the major negative factors.

实验结果表明，差动电容传感器的分布电容、陀螺转子的零电位和模型误差等是影响测量精度的主要因素。

First the dual-body satellite model is established and the control laws of reaction wheel are designed. Based on this the extended Kalman filter estimators with attitude sensor updated by star tracker are designed to provide error corrections for the pseudo-gyro and inertial gyro.

首先建立了双体卫星模型，并设计了动量轮控制律，在此基础上根据星敏感器的测量信息，应用广义卡尔曼滤波器来估计姿态和角速率漂移误差，进而对伪陀螺和惯性陀螺进行校正。

In an admirable error bound, the numerical simulation had the close results with experiment by the characteristic curve of cold mass flow fraction, as well as Thermodynamics model of vortex tube, So Thermodynamic theory hypothesis was available to explain Ranque-Hilsch effect of vortex tube.

在误差允许的范围内，涡流管冷流率特征曲线描述的结果与涡流管热力学理论给出的结果非常相近，说明涡流管热力学理论假设能够描述Ranque-Hilsch效应。

Based on the forenamed theory, Estimated the Total Electron Content including the second-order ionospheric error. Established the 2°×2° geomagnetic vector grid-model over mostly area of China , then processed some dual-frequency data to indicate the algorithm is feasible and correct. Obtained some useful conclusion after analyzing the result of data processing.

本文计算了基于中心电离层单层模型的覆盖中国区域的2°×2°地磁场格网点的矢量值，对计算结果的X、Y、Z三个方向分量进行二次曲面拟合，对两种考虑地磁场影响计算包含电离层延迟误差二阶项的TEC估计结果进行了计算，验证了拟合模型的正确性和可行性，并对试算结果进行了分析，得到了一些有益的结论。

According to this, we analyse the conintegration relationship between corresponding currency supplies with main economy variable, and build error correction model.

在此基础上，具体分析相应货币供给量与主要经济变量之间的协整关系，建立误差修正模型。

In the population model, the dependent variable y is related to the independent variable x and the error u as

在总体模型中，因变量y与自变量x和误差项u关系可以写作

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。