误差模型

In cross-section analysis, there exists conditional convergence in China and spatial error model is better than spatial lag model. In panel data analysis, fixed effect spatial error model is better than fixed effect spatial lag model.

在横断面分析方面，中国大陆地级城市间存有条件收敛，以空间误差模型较佳；Panel Data分析则以固定效果空间误差模型优於固定效果空间落迟模型。

From the model, functional relationship between kinematics reliability of tool tip and every error resources was got; the contribution of each error component to the kinematics accuracy of the mechanism was analyzed and the key of all error resources was confirmed.

应用误差模型能够得出末端执行器位姿误差和各个误差源之间的显式映射关系，定量地分析各个误差源对机构运动精度的影响程度，从而确定机构中影响其运动精度的关键环节。

On the basis of variation characteristics of ship speed error model, a ship speed regulator using the on-line adaptive error model is proposed in this paper. The control scheme is based on back propagation multi-layer perceptrons adaptive neural network in which a modified hyperbolic tangent function is used as the activation function of an auto-tuning neuron and is updated by the steepest descent method.

在分析船舶航速误差模型变化特性的基础上，应用激励函数的自适应神经网络和最陡下降法的非线性优化技术，提出了自适应学习误差模型控制方法，应用于船舶柴油机调速器控制系统。

Model is also proposed to describe how the nonideal splitting performance of PBS influences the second-harmonic nonlinearity.

推导出非理想情况下偏振分光镜透射率和反射率的激光外差干涉非线性误差模型，建立了偏振分光镜分光性能非理想对非线性误差二次谐波的影响模型。

And the structure and the principle of the system are also discussed. Then we discuss in detail the error of the stimulator and the source of it.

然后具体讨论模拟器的误差，分析误差来源，建立误差模型，重点研究模拟器误差对模拟回波信号的影响。

To improve the pointing accuracy of the telescope mount and the capability of daylight tracking, it is necessary to do more study on the error of telescope axes. The present thesis analyses many kinds of factors that cause the pointing error of telescope mount, and discusses the method for correcting the pointing error by setting up telescope mount model in detail.

本文详细分析了望远镜机架指向产生偏差的各种因素，讨论了通过建立望远镜机架指向误差模型的方法来修正望远镜机架指向误差的方法，通过使用CCD观测恒星来求解望远镜机架指向误差模型参数。

In the intersatellite coherent optical communication, the vibration of a satellite will lead to a pointing error of transmitting and receiving antennas, which will decrease the signal-to-noise ratio and increase the bit error rate. In this paper, the Rayleigh distribution is taken as the pointing error model caused by satellite vibration, and PSK homodyne communication scheme is used as an example to analyze the influence of the satellite vibration on the system instantaneous BER and average BER. The simulation calculation result of BER is given.

针对星间相干激光通信中卫星平台的振动造成发射天线和接收天线的瞄准角误差，使系统信号信噪比下降，误码率增加，该文以瑞利分布作为振动造成的瞄准角误差模型，结合高斯本振光和艾里信号光外差检测模型，以PSK零差通信体制为例分析卫星振动对系统的瞬时误码率和平均误码率的影响，给出误码率仿真计算结果。

A new adaptive clock error model was put forward in order to determine the GPS error state model in GPS/ INS tightly integrated system.

针对GPS/INS深组合系统中GPS接收机误差状态模型难以确定的问题，文中提出了一种自适应的时钟误差模型。

A new technique,"Curvature Method", recognizing edges of gear cutters is introduced, the tracking principle for scanning edge profile of gear cutter is developed and a robust method is proposed to automatically distinguish boundary points of assessing region.

系统地研究了螺旋曲面特征线的测量原理，建立了特征线的误差模型，给出了相应的误差评定方法；并首次将特征线误差划分为三种基本形态，同时给出了各形态的数学模型。

The simulation result of error model of six-bar linkage of 5 degrees in the machine shows that the error model base on the method above is accurate and the modeling method is correct and reliable.

五轴并联机床约束机构误差模型仿真结果表明，上述建模方法正确、可靠，由此得到的误差模型精度高。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失