乘法的

to reduce the impact of carrier frequency offset in ofdm system,this thesis designs a new carrier frequency offset estimation scheme for ofdm system.the carrier frequency offset estimation includes acquisition and tracking.we adopt variable step size adaptive algorithm.the acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth.through this method we can not only avoid the feedback by using forward error correction,but also reduce the times of complex multiplication in order to reduce the power consumption of the system.this algorithm not only has low complexity and fast convergence nut also can improve the demodulation performance of ofdm system.computer simulation illustrates the superior performance of the proposed algorithm with regard to estimation accuracy in both awgn channel and multi—path channel.

摘 要：为了减小正交频分复用系统受频率偏差的影响，在ofdm系统中设计了一种新的载波频偏估计算法。频偏估计包括跟踪和捕获两个阶段，文中采用变步长自适应算法来进行跟踪，这个跟踪算法的捕捉范围是整个信号带宽的一半。通过此方法，不但可以利用前向纠错的方式来避免反馈，而且可以缩减复数乘法的次数以降低计算复杂度和系统功耗。该方法运算复杂度低，并具有较好的收敛性，能改善odfm的解调性能。从计算机的仿真效果可以看出无论是在awgn信道上还是在多径信道上都表现出了卓越的性能。

In order to refine a method for defence against at least one attack made by means of differential power analysis on at least one hyperelliptic cryptosystem, in particular at least one hyperelliptic public key cryptosystem, which is given by at least one hyperelliptic curve of any genus over a finite field in a first group, where the hyperelliptic curve is given by at least one co-efficient, so that an essential contribution can be made towards an efficient and secure implementation of the hyperelliptic cryptosystem, it is proposed that the hyperelliptic curve and/or at least one element of the first group, in particular at least one in particular reduced divisor and/or at least one intermediate result of a scalar multiplication, is randomised.

为了改进用于防御在至少一个超椭圆密码系统中、特别是在至少一个超椭圆公共密钥密码系统中通过微分功率分析作出的至少一个攻击的方法，该超椭圆公共密钥密码系统是通过在第一组中有限域中任何种类的至少一个超椭圆曲线给出的，其中超椭圆曲线由至少一个系数给出，以使得可以对于超椭圆密码系统的有效而安全的实施方案作出重要的贡献，提出将超椭圆曲线和/或第一组的至少一个元素、特别是至少一个特定的减小的除数和/或标量乘法的至少一个中间结果进行随机化。

Cassiodorus was the first to make the transcription of manuscripts and the multiplication of books an organized and important branch of monastic labour, but his insistence in this direction influenced western monachism enormously and is in fact his chief claim to recognition as a legislator for monks.

cassiodorus是第一次，使转录的手稿和乘法的书籍，有组织的重要分支寺院的劳工，但他坚持在这个方向的影响，西方monachism很大，其实是在他的行政索赔的承认，作为一个立法者为僧侣。

In their proposed method to implement digital multipliers using decomposition logic, the multiplication process is split into subunits, and their outputs are combined to get the final results.

在他们的提案中，数字乘法器可以通过逻辑分解实现，乘法的过程可以分解为小的单元，同时这些小的单元的输出在组合成为最后的结果，这种并行运算的结构比传统的树状乘法器更有优势。

Moreover, we analyze explicitly selection of weighted function, reversibility of A matrix, confirm of radius of influencing domain and characteristic of interpolating function and so on.

并对移动最小二乘法的权函数的选取、A矩阵的可逆性、影响域半径的确定以及插值函数的性质等关键性问题都进行了详细的分析。

A high breakdown contaminated robust estimation model is applied to the transformation of coordinates in GPS network from WGS 84 system to local plane system.

采用高崩溃污染率抗差估计方法，将GPS网由WGS－84坐标系下的坐标转换成局部坐标系下的坐标，从而不仅能识别不稳定的基准点，而且能对其形变的大小作出近于实际的估计，保证了转换后GPS网的精度及转换坐标的正确性。当基准点中没有粗差时，与最小二乘法的结果一致。最后，给出了应用实

Applied example makes clear, PSO can be solved well have nonlinear the computational precision of the least square method of optimizes problem;PSO computational precision excel that optimize target function or has multi-parameter, define with other and contented standard most the methodological computation precision of zonule condition comparatives, can achieve the result with taller precision and come true simply easily.

应用实例表明，PSO能够很好地解决具有非线性优化目标函数或具有多参数的优化新问题；PSO的计算精度优于最小二乘法的计算精度，和其他满足标准定义的最小区域条件的方法计算精度相当，能够获得精度较高的结果且简单易于实现。

The symbol itself may have been suggested by the miraculous multiplication of the loaves and fishes or the repast of the seven Disciples, after the Resurrection, on the shore of the Sea of Galilee (John 21:9), but its popularity among Christians was due principally, it would seem, to the famous acrostic consisting of the initial letters of five Greek words forming the word for fish, which words briefly but clearly described the character of Christ and His claim to the worship of believers: Iesous Christos Theou Yios Soter, ie Jesus Christ, Son of God, Saviour.

符号本身可能已经提议由神奇的乘法的面包和鱼或repast的七个弟子，复活之后，对海岸的加利利（约翰21时09分），但其广受欢迎的基督徒，是因为主要是，它似乎是，以著名的acrostic构成的首字母的五个希腊字组成词鱼，其中字简略，但很明显，描述了性格的基督和他自称崇拜的信徒： iesous克里斯托theou yios SOTER的，即耶稣基督，上帝的儿子，救世主。

The numerical calculations of quaternion matrices The quaternionic quantum mechanics is a new coming disciplines of physics, because of noncommutation of quaternions, some numerical calculation methods of quaternion and quaterinon matrices are complicated and tedious.

四元数矩阵的数值计算问题四元数量子力学是近十几年来才发展起来的一门新兴的物理学科，由于四元数乘法的不可交换性，使得四元数量子力学中的四元数数学理论基础，特别是有关四元数问题的数值计算方法很不完备。

To reduce or remove size effect, the size classification elimination method, volume average method and normalization method based on volume were presented and the calibration and prediction results indicate that these three methods could reduce or remove the size effect effectively. The normalization method is more suit to in-line application and obtained better calibration and prediction results with the r of 0.789, 0.858 and 0.947, the RMSEC of 0.596, 0.499 and 0.313, and the RMSEP of 0.606, 0.686 and 0.413 than the results without normalization with the r of 0.716, 0.793 and 0.848, the RMSEC of 0.678, 0.592 and 0.515 and the RMSEP of 0.825, 0.764 and 0.714 for the original spectra, the first derivative spectra and the second derivative spectra with soluble solids content using partial least square method , respectively. 4. Owing to much thick skin of watermelon, contrast experiment was conducted in skin-peeled watermelon and intact watermelon to compare the influence of skin on spectra.

针对西瓜果型大且差异显著的特点，研究果型差异对可见／近红外光谱以及建模与预测结果的影响，并提出三种方法消除或减小这一影响因素，分别是分级消除法、体积平均法和基于体积的正则化方法，其中基于体积的正则化方法，更适合在线生产应用，该方法使果型大小差异明显样品的原始光谱、一阶微分光谱、二阶微分光谱在对可溶性固形物含量检测时，采用偏最小二乘法的建模与预测结果由原来的校正相关系数r分别为0.716、0.793、0.848提高到r分别为0.789、0.858、0.947，均方根校正标准偏差RMSEC由原来的0.678、0.592、0.515分别降为0.596、0.499、0.313，均方根预测标准偏差RMSEP由原来的0.825、0.764、0.714分别降为0.606、0.686、0.413； 4。

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