最小化

On the other hand, we also design two types of MMSE equalizers for DS-CDMA downlink systems.

另一方面，我们也针对最小方均误差等化器当中的反矩阵问题进行讨论。

Two control methods have been studied for the control of TCP etchers; one is EWMA (Exponential Weighted Moving Average), the other one is LS. In EWMA controller, the control parameter is the etching power, while they were etching power, chamber pressure, and gas flow rate in the LS control.

在作法上，我设计了EWMA(Exponential Weighted Moving Average)及LS控制器来模拟与分析，由於EWMA模拟时会需要有一个目标模型，所以我另外以最小平方法和最佳化公式建立一个以腔体压力，功率，氯气流量为变数，蚀刻深度为输出的模型以供EWMA控制器模拟时使用。

After 10h ball milling, the alloy of carbonyl iron and carbonyl nickel began to form, and the sample kept its original bcc and fcc structure; after 100h ball milling, the sample became a solid solution with bcc structure; after 200h ball milling, the diffraction peak of Ni almost disappeared and the isotropic grains with D achieved, which was mainly attributed to the dislocations and disclinations of the nanocrystalline bcc FeNi suffering from severe plastic deformation by ball milling.

球磨10h时，羰基铁和羰基镍开始形成合金，但大部分Fe、Ni原子仍分别以bcc结构和fcc结构存在。球磨100h时，样品以bcc结构的FeNi合金为主，球磨200h后，样品中fcc结构Ni特征峰几乎消失，FeNi纳米晶达到最小粒径的平衡值，~8nm。高能球磨过程中，晶界区域的层错缺陷是合金化和纳米晶形成的重要因素。

Home position shear tests of slope rock, point loading tests and indoor AMD simulation action tests in XingQiao concave slope had show shearing strength and coherence between body layers of quartz sandstone decrease by 13.2%~21.3% after attacked by AMD, the angle of internal friction between layers is decreased by 5.0%~7.5%, in general, AMD affects the rocks mechanical property at range of 60~100m interior the perpendicular slop. Data analysis shows: 1 The actions to slope are major focused on zone of weakness, shearing strength of slope foot and AMD centre are reduced by 52% and 64.7% separately. 2 The explosion stress wave of long distance field has obviously increasing influence to disturbance amplitude value of slope with increasing of the slope height and distance, the response of the top of slope and fault region are obvious as well as damage effect; the foot of slope is with smallest disturbance amplitude value, the disturbance amplitude value of the step close to free face is obviously bigger than the interior of slope. 3 With the coupling effect of the AMD and explosion loading, the stress distribution inside of slope mainly presents characters of explosion stress field; the area affected by AMD becomes a weak area of shearing stress.

新桥深凹露天矿边坡岩体的原位剪切试验、点载荷试验、室内模拟AMD作用试验表明：AMD蚀化后的石英砂岩，岩体层面间的抗剪强度和粘聚力减小的幅值约为13.2%~21.3%；层面间内摩擦角减小幅值在5.0%~7.5%之间；AMD一般影响垂直边坡体内部在60~100m范围内的岩体力学性质数值分析表明：AMD对边坡体的作用主要集中在弱化区域内，边坡体的底脚和AMD作用中心区域的剪切应力减少了52.0%和64.7%；(2)随着边坡体高度和距离的增加，远场爆炸应力波对边坡扰动幅值的增加趋势明显，边坡顶部和断层部位的响应突出，损伤效应明显；边坡底脚扰动幅值最小，临空面附近台阶的扰动幅值明显大于边坡体内部；(3)AMD与爆破荷载耦合作用后，边坡体内部的应力分布主要呈现出爆炸应力场的特征，AMD影响区域形成了一个剪切应力弱区。

The results indicate that the lasing threshold becomes lower if the localization length and mode area get smaller.

模拟结果显示，激光器的阈值依赖于模式的空间分布，局域化长度和模面积最小的模式具有最低阈值。

Compared with template matching, support vector machine and regularized least squares learning method, the proposed method gets more SAR target recognition accuracy.

与模板匹配法、支撑矢量机以及正则化最小二乘监督学习方法相比，具有更高的SAR目标识别正确率。

The performance of PDA-MUD is close to the optimal multi-user detector, but computational complexity of PDA-MUD is higher than the linear minimum mean-square error multi-user detector.

虽然使用机率资料连结演算法之多使用者侦测器可以得到近乎最佳化多使用者侦测器的效能，但其计算复杂度相较於最小均方误差多使用者侦测器仍然偏高。

Another dilemma involves "decimalisation," quoting stock prices in pennies rather than in increments of sixteenths.

银行面临的另一个问题是&十进制化&，即以美分为最小单位来标明股价，而不是采用16进制的分数来表示。

First, we introduce the principle of feeder protective apparatus and select adequate protective equipments in accordance with different types of distribution system, using the least square error method to simulate the time/current curve and applicate simulation formula to digital the curve data, Secondary, using augmented incidence matrix method to find the exact pairs of primary/backup protection relay and find the relay tripping sequence of distribution lines.

首先介绍线路之过电流保护设备动作原理，依不同之配电系统型态来选用适当之保护设备种类，并使用最小平方误差法模拟保护电驿之时间－电流特性曲线，应用模拟方程式将曲线之资料数位化，且藉由图形理论中之增广关联矩阵法求取正确之主保护与后卫保护电驿对，以找出系统中各配电线路保护电驿间之跳脱顺序关系。

Based on both the strong-weak model and the strong-strong model, the instability caused by ions in equilibrium is simulated, some useful results are obtained. The results include the relation between instability growth rate and neutralization factor, the relation between instability threshold and neutralization factor, and the incoherent tune shift, the tune spread, the ion cloud distribution, the ion loss mechanism, as well as the ion accumulation limitation in the storage ring. With this understanding, we have carried out theoretical and experimental study for some ion clearing methods and their effects for the HLS ring. The minimum static clearing voltage is determined through calculating beam electric field and measuring ion current.

在上述基础上，我们对各种离子清洗的方法及清洗效果进行了理论和实验的研究：通过计算束流电场和测量清洗电极上的离子流来确定直流清洗电极所需的最小清洗电压；通过测量离子引起的频移来计算储存环的中性化系数；用模拟计算和实验测量证实了高频清洗能有效地克服储存环上离子俘获不稳定性；对由高频剔除系统形成的储存环部分束团填充模式下的离子俘获问题进行了初步研究，证实采用束团部分填充模式能在一定范围内克服离子俘获效应；并对各种离子清洗方法进行了比较。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。