最差

Results show that amplitude of displacement excited by vertical incidence wave is larger than that excited by inclined incidence wave and not influenced greatly by the incidence angle. In vertical incidence, amplitudes of displacement of two points at the same altitude along each cavern are basically identical and maximum relative displacement occurs between top and bottom point of the cavern. While in the case of inclined incidence, displacement amplitude on sides meeting the wave is larger than that on leed sides, and maximum relative displacement occurs on left skewback and bottom of the cavern.

结果表明，位移幅值受入射角度的影响不敏感，竖直入射比斜入射情况要大；竖直入射时，各洞室两侧同一高程处的位移幅值基本相同，相对位移差最大部位为洞顶与洞底，而斜入射时迎波面比背波面一侧位移大，且相对位移差最大部位为洞室迎波面的左拱座与洞底。

The difinition of Least Square Extrapolation was introduced and the Algorithms were designed, which were used to Spectral Measure of Risk, and superiorities were discussed.

介绍了最小方差外推法的概念，提出了基于最小方差外推法计算双曲类风险厌恶谱度量的算法，并进行数值模拟，讨论了此方法的优越性。

According to the samples of Ommastrephes bartramii collected by Chinese squid jigging vessels during July to October in 2007 in the northwest Pacific Ocean, the ratio of statolith maximum width to total length, as an indicator of shape change of statolith, was analyzed under different sex maturitiy stages and individual sizes using the method of ANOVA and LSD.

本文根据2007年7～10月我国鱿钓船在西北太平洋海域连续采集的柔鱼样本，以耳石最大宽度MW与其总长TSL之比作为其耳石形态变化的指标，利用方差分析和最小显著差法研究了性成熟和个体大小对耳石形态的影响。

Basal and middle segments of 6 walls of the left ventricle（12 Segments were studied. Peaking displacement and Time to peak displacement were measured with Triplane－TTI. Then we calculated the maximal difference in Td and the standard deviation of Td.

取左室6个壁的基底段和中间段，总共12个节段，应用Triplane－TTI测量各节段收缩最大位移及达位移峰的时间Td），计算最大差值(Td-maxD和标准差。

Judgement and Solution Methods of UMVUE ;2. The maximum likelihood estimate and uniformly minimal variance unbiased estimate of MTTF were made on the one-unit system whose lifetime was assumed to be on GAMMA distribution.

讨论寿命服从单参数GAMMA分布单元平均寿命的极大似然估计和一致最小方差无偏估计；应用BASU定理求出了单元可靠度及串联系统可靠度的一致最小方差无偏估计。

Under CLM, OLS is not only BLUE, but also the minimum variance unbiased estimator, that is, among linear and nonlinear estimators, OLS estimator gives the smallest variance.

在经典线性模型假设下，OLS不仅是BLUE，而且是最小方差无偏估计量，即在所有线性和非线性的估计量中，OLS估计量具有最小的方差。

The results obtained from range analysis and variance analysis show that the channel turning angle is the most important factor affecting the flow index, and the flow rate is seriously influenced by the number of channel units, which facilitates settling the problem of increscent flow rate due to the structural optimization.

流量和流态指数的极差和方差分析结果均显示出流道转角对流态指数的影响最显著，而流道单元数对灌水器流量的影响最大，这一结果有助于解决流道经优化后带来的流量增大问题。

As a differential detection is used between the intercarrier, the proposed algorithm overcome the high sensitivity to timing error of conventional algorithm and is robust to multi-path. The effect of sample frequency offset can't be ignored in a continuous OFDM system of a large number of subcarriers. The estimation precision of the conventional algorithm is low and the realization is complex. A joint estimation of sample frequency offset and fine frequency offset based on difference operation is proposed. As averaging use a large number of samples in a maximum likelihood algorithm, the estimation precision is very high. The use of difference operation cancel the effect of carrier frequency offset, and the proposed sampling frequency estimation algorithm is robust to carrier frequency offset.

最后，本文对连续系统中的采样频率和载波频率精同步技术进行较为深入的研究，由于子载波数目大的连续OFDM传输系统中，采样频率偏差不可忽视，以往的采样频率估计方法精度低、实现复杂，因此本文提出了一种基于差分处理的采样频率偏差和精载波频率偏差联合估计算法，利用了最大似然算法进行采样频率偏差的估计，由于采用了差分处理方法，消除了载波频率偏差对采样频率偏差估计的影响，采用的最大似然算法对大量样点进行平均化处理，所以，相对以往算法，提出的联合算法估计精度高，而且采样频率偏差估计对载波频率偏差具有鲁棒性。

Meanwhile, it also analyzes the precision of these methods and the overall accuracy of the lunisolar theory of the book in positional calculations.

前一种方法用于太阳中心差计算时可以把最大误差控制在1角秒之内，而后一种方法用于月亮中心差计算的最大误差也不会超过11角秒。

In this paper, a novel two-dimensional kernel maximum scatter difference discriminant analysis (2D-KMSDA) is developed for the extraction of nolinear feature by using the well-known "kernel trick". It extracts much more effective nolinear feature and made the true recognition rate raise saliently. What's more, it also offers a unified framework for two-dimensional nolinear discriminant analysis.

本文通过引入著名的&核技巧&，将二维最大散度差线性鉴别分析扩展到非线性空间，提出了一种新的二维核最大散度差鉴别分析方法，该方法不仅抽取了图像中更加有效的非线性鉴别特征，使正确识别率显著提高，而且为二维非线性鉴别分析提供了一个统一的构架。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。