查询词典 error analysis

The vertical and horizontal postglacial rebound is detected by measuring site velocities and length rates of baselines respectively using data from space geodetic measurement of VLBI. The comparison and correlation analysis between space geodetic results and predictions of postglacial rebound from the geophysical model ICE-4G is shown. And the system error between space geodetic results and ICE-4G predictions is also discussed.

利用VLBI的实测数据和ICE-4G模型，采用实测站速度和基线长度变化率分别检测了冰期后地壳回弹的垂直运动和水平运动，并对用空间技术求解的实测值和用ICE-4G模型求解的估计值进行了数理统计分析，最后给出了实测结果与地学模型估计值之间的系统差。

We completed the theory and system researches of the 2D triangulation-based optical rang finding with dual lens,delivered the optics and electronics design for this system in detail,constructed the protype of real-time 2D triangulation-based optical rang finder and gave in-depth analysis and appropriate remedy on the triangulation ranging error.

完成了二维光学双镜头三角法测距的原理与系统研究；详细阐述了二维双镜头三角法测距系统的光学和电子学设计，研制了实时二维双镜头三角法测距系统样机，深入分析了系统测距误差来源并对其进行了修正。

The major achievement of this paper is: Based on characteristics of the traffic data distribution, execute pattern recognition operations on traffic condition on two dimensions by clustering, then use BP neural network to describe and forecast traffic flow aiming at each pattern. Making use of classic flow-occupancy inverse "V" model, implement polynomial fitting using least-squares algorithm and statistics method on flow curves to detect outliers which are proved to be not accord with practice through the actual implement, then use the moving average model to recorrect the outliers and absent. Make correlation analysis on muti-direction flow queues of the intersection and ones of upriver intersections, choose flow queue with high correlation as assistant one to improve the error tolerance of the prediction system, at the same time we can use the method to give an estimation of flow in intersection with out sensors. We design and implement an SOA(Service-Oriented Architecture)-based UTDD(urban traffic data mining development) with high expansibility and performance, which implement unified management and call of the data-mining application though defining a XML-based description of data-mining process and a common interface to call data-mining process, finally we build traffic flow prediction application model on UTDD.

根据交通流量数据分布的特征，提出基于k-means的二次聚类方法，对交通流量在流量大小和时间上进行模式划分，进而对各个交通流模式进行基于BP神经网络的描述和预测，从而提高模型对流量预测的精度； 2）根据流量/时间占有率倒&V&字形曲线分布模型，提出基于最小二乘法的三次多项式曲线拟合和统计方法的异常检测方法，实际应用表明该方法能够有效识别异常数据，然后根据移动平均算法对异常数据进行修正； 3）基于序列相关性分析，分别对预测方向的交通流量数据序列、上游路口相关序列以及预测路口其它各个方向上的交通流量序列进行分析，选择相似性流量序列，作为辅助序列提供其他没有检测器路口的流量估计； 4）设计和实现了基于SOA（Service-Oriented Achitecture）的高性能、可扩展的智能交通数据挖掘系统UTDD，该系统通过定义基于XML的数据挖掘过程描述和通用的过程模型接口，实现数据挖掘应用的统一管理和调用，最后在UTDD上建立了基于路口流量预测的应用模型。

Computer Aided Diagnosis Axiography is precise and reliable during the record of condyle movement. On the basis of traditional face bow system, CADIAX use two styli in order to computer the hinge axis; the styli is near to the condyle which diminish the enlargement error and make the record more reliable. Computer technique is adopted by CADIAX, which give a more comprehensive analysis of condyle movement, which can observe the condyle movement in four dimensions. The position of mandible during recording is started from Reference Position, the mandible is posited at a retral position, a more physiological position, and the result is close to reality.

髁突运动轴图描记仪(Computer Aided Diagnosis Axiography)可以准确、可靠的记录分析髁突运动，在传统的面弓记录仪基础上，采用双髁突指针，可以准确计算绞链轴点；测量点与被测髁突距离接近，测量结果更加真实可靠；与计算机技术相结合，数据分析功能更加强大，对髁突运动可以进行四维分析，同步观察双侧髁突的时相特征；记录位置选用参考位置，下颌处于生理后位，记录结果更接近真实情况。

Based on the analysis of bistatic SAR geometry model, bistatic SAR echoed signal is modeled in the double range variables domain in this paper, and the relationship between the double range variable domain and the single range variable domain is established. Then a range-dependent Doppler algorithm for imaging processing airborne bistatic SAR raw data of the translationally invariant configuration is derived, and the effect of error of the algorithm is analyzed by simulating.

摘要该文通过对机载双基地SAR非移变几何模型的分析，建立了双距离变量域的回波信号模型，由于回波数据是在距离和域，该文推导了距离和变量与双距离变量的转换关系，解决了该模型向距离和变量域转换的问题；提出了适用于非移变模式的变多普勒参数的双基地RD算法，并对该算法中引入变多普勒斜率所存在的误差进行了仿真分析。

The relationship between the tracking error and those auxiliary errors is clearly established when plant relative degree is greater than one and therefore, it can be proved that the influence of averaging filters on a VS-MRAC system can be considered as, in a sense, an unmodelled dynamics. As a result of this, it is shown that the stability analysis of a signal synthesis based VS-MRAC system must be modified to include the 'unmodelled dynamics'.

当对象建模部分相对阶大于1时，得到了系统跟踪误差和辅助误差间明确的关系表达式，进而证明平均值滤波器对系统的影响相当于未建模动态对系统的影响，这表明以往相关文献关于系统稳定性的分析是有缺陷的，没有将平均值滤波器对系统稳定性的影响完全考虑在内； 3。

Secondly, taking unstiffened plate as an example, the paper applies finite element analysis to checking the validity of buckling assessment equivalent formulae of CSR including JTP and JBP, carries out comparison between JTP and JBP Rules in buckling strength assessment, and analyzes the main reasons for error. The paper also provides reference for the harmonization of Common Structural Rules.

其次，以非加筋板为例，应用有限元方法验算了共同结构规范中对屈曲强度进行等效计算的有效性，并比较了共同结构规范中JTP规范和JBP规范对屈曲强度校核的不同点，分析了规范中造成误差的主要原因，为规范的进一步调整提供了参考。

According to the analysis of relations between optical power,center wavelength,sensing fiber Verdet constant,and Fiber Optic Current Transformerscale factor,it was demonstrated that the center wavelength excursion generated by power attenuation of SLD was the prime reason of FOCT scale factor error.

通过分析光源功率、中心波长、传感光纤Verdet常量，以及闭环光纤电流互感器变比之间的关系，结合测试数据，证明了中心波长漂移是光源功率衰减引起闭环互感器变比变化的主要原因。

Meanwhile, some progress has been made in the HREM image processing technique, and in the traditional trial-and-error method as well, for crystal structure analysis.

对高分辨电子显微学晶体结构分析的图像处理技术及传统的尝试法作了一定的发展： 1。

Coning error compensation algorithm simulation and SINS algorithm simulation are carried out and the simulation results are consistent with the theory analysis.

对圆锥误差补偿算法和捷联惯导算法进行了仿真，仿真结果和理论分析结论吻合。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。