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Second,a new estimator called generalized rootpower estimator of regression coefficients in growth curve model is obtained.For the newestimator,its superiority over the LS estimator and the root power estimator,and its admissibilityare proved.Two methods,two kinds of arithmetic of choosing the generalized root powerparameters are introduced.A demonstrative practical example is provided.

对增长曲线模型中的回归系数矩阵提出了一种新的估计——广义根方估计，并证明了通过广义根方偏参数的适当选取可使得该估计在均方误差和均方误差矩阵的意义下优于已有的最小二乘估计估计和根方估计；及证明了广义根方估计是可容许估计；还给出了选取广义根方偏参数的两种方法、算法和应用实例。

Experimental results show that the hierarchical road map has obvious superiority to the regular grid map in quantity of nodes and size of map and enhances the navigating efficiency of environmental map.

实验表明层次道路图在节点数、数据量等方面明显优于现有的规则网格地图，增强了环境地图的导航效率。

The result of numeric computation demonstrates that the approximate directional algorithm is robust, the result of Monte Carlo simulation shows that the performance of the optimum four-element array structure is better than the common one or the regular tetrahedron one.

数值计算结果表明，提出的近似定向算法是可靠的；计算机蒙特卡罗仿真结果表明，导出的最佳四元阵列性能优于普通的四元阵和正四面体阵。

The treatment with rehydration therapy and low dosage insulin is effective and significantly superior to conventional therapy.

水化疗法配合小剂量胰岛素疗法，其疗效优于传统的治疗方法，值得临床推广应用。

Based on these results, the use of caudal clonidine may be superior to caudal opioids after pediatric ureteral reimplantation.

基于举述结果，小儿输尿管移植术后骶管注射可tilde；？定tilde；？许优于阿片类药。

At the same time, the combining intensity between the modified layer and the base with the preoxidized PAN fibers as the reinforcer was stronger than that with the carbon fibers as the reinforcer.

同时，用预氧丝作增强剂得到的改性膜与基体之间结合的强度也明显优于用炭纤维作增强剂得到的改性膜与基体之间结合的强度。

Performance studies based on simulation are carried out, and the results show that the system architecture outperforms a recently proposed system architecture P2VoD in a number of important performance metrics such as the server's load, client join rejection probability, network resource usage ratio, program integrity ratio and so on.

仿真实验表明：同等条件下，PeerVoD体系在服务器负载、节点加入时被拒绝的概率、网络资源利用率以及节目完整性等性能指标上，均优于同类体系P2VoD。

With reasonable analysis of optical path, a new type beam expander with wide aperture and bigger field angle and large relative aperture in which the on-axis and off-axis aberration are both perfectly corrected is designed.

通过合理的光路分析，设计出一种轴上和轴外像差都得到很好校正、大口径大相对孔径、视场可增大的、光学性能优于伽里略和开卜勒扩束器的新型扩束器。

It is shown that this method has high precision by experiment, and the measured relative error of space length excels 0.3%.

实验结果表明，该方法标定精度高，已标定传感器测量空间距离的相对误差优于0.3%。

After the optimization, the maximum relative errors of simulation is 1.98%, and its CPU time is 670s.

神经网络优化处理后模拟的最大相对误差为1.98%，CPU时间为670s，从而在模拟精度和效率上均优于传统有限元法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了