查询词典 scheme

Let. appear the intersection of university and training mode and course offered of conduct with have certain disparity train scheme to be enough complete mainly between the the intersection of logistics and the intersection of enterprise and actual demand.

找出现行的高校培养模式和课程设置与物流企业实际需求之间存在一定的差距主要是培养方案不够完善。

In this thesis, we will mainly do research on the novel scheme for Digital image Steganography, Digital Image Secret Transmission in network and the development of the information hiding device for application. The main contributions of this thesis are as following: The novel conversion method for mapping image to complex number is proposed, and the plus, minus, multiply and complex conjugate operation of image are defined based on Positional number systems and complex number system. Following new results have been gotten: 1 The suitable complex number basis to be used to express integers is a big set. 2 Any image can be mapping into a one-to-one point. 3 Lots of image processing problem can be considered based on geometric theory.

在本论文中，研究工作集中在数字图像伪装算法的新模型、图像在网络中的加密传输的新方案和信息伪装设备的研发等三个方面，主要包括：基于位值制记数法和复数系理论，提出利用复数作为基底的数字图像新的表示方法，用复数运算定义了图像和图像间的"加"、"减"、"乘"、"共轭"等运算关系；得到理论结果： 1、能表示任何整数的复数基是很大的一个集合。2、任何一幅图像，都能和复平面上的一个点一一对应。3、可以将图像问题化归为平面几何问题处理。4、复数系下的图像表示适合用于信息伪装。

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 this paper, we introduce the algorithm of Schoof-Elkies-Atkin to compute the order of elliptic curves over finite fields. We give out a fast algorithm to compute the division polynomial f〓 and a primitive point of order 2〓. This paper also gives an improved algorithm in computing elliptic curve scalar multiplication. Using the method of complex multiplication, we find good elliptic curves for use in cryptosystems, and implemented ElGamal public-key scheme based on elliptic curves. As a co-product, we also realized the algorithm to determine primes using Goldwasser-Kilian's theorem. Lastly, the elliptic curve method of integer factorization is discussed. By making some improvement and through properly selected parameters, we successfully factored an integer of 55 digits, which is the product of two 28-digit primes.

本文介绍了计算有限域上椭圆曲线群的阶的Schoof-Elkies-Atkin算法，在具体处理算法过程中，我们给出了计算除多项式f〓的快速算法和寻找2〓阶本原点的快速算法；标量乘法是有关椭圆曲线算法中的最基本运算，本文对[Koe96]中的椭圆曲线标量乘法作了改进，提高了其运算速度；椭圆曲线的参数的选择直接影向到椭圆曲线密码体的安全性，文中利用复乘方法构造了具有良好密码特性的椭圆曲线，并实现了椭圆曲线上ElGamal公钥体制；文中还给出了利用Goldwasser-Kilian定理和椭圆曲线的复乘方法进行素数的确定判别算法；最后讨论了利用椭圆曲线分解整数的方法并进行了某些改进，在PC机上分解了两个28位素数之积的55位整数。

The simulation results show that the complexity of the generalized complex sphere algorithm is significantly lower than that of the exhaustive search scheme.

仿真结果表明该广义复球形解码算法的复杂度明显低于采用穷尽搜索策略的复杂度。

This paper has analysed the requirement of the computer-aided compound document production system, builds the structure of computer-aided compound document production system ,studies the information model of compound document object and put forward the develoment scheme of computer-aided compound document production system.

分析计算机辅助复合文档生成系统的需求。创建计算机辅助复合文档生成系统的体系结构。研究复合文档对象的信息模型。提出计算机辅助复合文档生成系统的开发方案。中国图书分类法分类号 F270， TP391

By use of implicit scheme,exit and wall temperature varying with time in air-precooled heat exchanger for compound engine are extracted.

利用隐式格式，求得组合发动机空气预冷换热器随时间而变的出口及壁面温度。

A compound control scheme combining detaching Proportion and Integral control with Model Reference Adaptive Control based on Liapunov stability theory was formulated,which is used on the plant of direct driving electric-servo-actuator.

以直接力驱动电动舵机为被控对象，提出了一种分离比例-积分控制与基于李雅普诺夫稳定性理论的模型参考自适应控制相结合的复合控制方案，该方案充分结合了分离PI控制动态性能好和自适应控制抗干扰能力强、鲁棒性好等优点。

In this paper, a new scheme is proposed on how to separate several compressed video signals transferred in the multiple wireless channels, by the method of blind source separation.

本文提出了一种多路视频压缩信号在无线信道中的盲源分离解决方案。

This method can be used to calculate flow field with arbitrary irregular shapes. It also maintains the excellent characters of TVD scheme: high resolution, accurate solution in smooth region. Thus it is a good method in numerical simulation of compressible fluid dynamics.

本方法可用于计算具有任意不规则几何形状的流场，并且保持了TVD方法高分辨率，光滑区高精度的特点，是可压缩流体动力学数值计算中的好方法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。