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In macro-perspective views, the popularity of codeswitching in ads reveals people"s psychological tendencies of westernization worship and language superiority admiration; in terms of ads plotting, code choice is usually employed as an effective strategy to call people"s attention so as to fulfill the advertising tasks. In addition, Markedness theory further explains how copywriters use implicatory meanings a code itself conveys to affect the target audience"s understanding of copywriters" purposes and intentions.

从宏观的角度上看，中―英语码转换在中国媒体广告中的流行趋势从心理学的角度体现了人们崇洋的心理及对&优势语言&的崇拜；从广告的创作方面来说，语码的选择是广告撰稿人为了引起顾客的注意从而达到广告宣传目的所采用的一种有效手段；&有标记理论&则从语言学的角度分析了广告撰稿人如何利用语码本身所传递的意义影响广告受众对广告人目的及意图的了解。

The Turbo-codes encoder is comprised of Recursive Systematic Convolutional Codes, which is connected by an interweaver. And the decoding algorithm of Turbo-codes, such as MAP, Max-log-MAP and SOVA, are all based on the soft input and soft output module.

传统的Turbo码山两个经交织器连接的分量码编码器级联而成，且Turbo码的译码采用了软输入软输出的算法思想和迭代译码的方法，使子译码器之间可以相互传递软信息，保证编码信息的充分利用。

Up to now, the performance analysis of noncoherent space-frequency coding whose receiver does not know the channel state information and the methods to reduce the encoding-decoding complexity have not been solved, and this has constituted a bottleneck of the research of noncoherent space-frequency coding.

非相干空频码具有接收端不需要知道信道信息的特点，而到目前为止，针对非相干空频码的性能分析和如何降低编译码复杂度的问题还没有得到很好的解决，这些问题已成为研究非相干空频码的瓶颈。

Using periodicity of the scramble sequence, it is theoretic proved the complexity of this method is not depended on the expression of generation polynome.

利用扰码序列的周期性原理，从理论上证明了并行扰码复杂度与扰码生成多项式的具体形式无关。

The basic principles of linear programming algorithm for the maximum likelihood decoding of LDPC codes are analyzed, and the ways to construct the codeword polytope based on the factor graph expression of parity check matrix of LDPC codes are described.

分析了应用线性松弛方法对低密度奇偶校验码进行最大似然译码的基本原理，介绍了基于LDPC码校验矩阵因子图表达构造码字多胞形的方法。

Second, to eliminate a special class of cycles in QC-LDPC codes, we considerQC-LDPC codes with circulant permutation matrices as protograph LDPC codes. Andwe reveal the relationship of cycles in a protograph LDPC code and its mother matrix.

其次，为了消除准循环低密度奇偶校验码中一类特殊的环，我们把由循环置换矩阵扩张得到的准循环低密度奇偶校验码看做一类原图低密度奇偶校验码。

No,all you need is to backup the poll code,after reinstallation,the surveillance software will call for a poll code,just input the poll code you backup.

不需要，您只需要备份好注册码，在重装系统后，该监视软件会要求您再次输入注册码，您输入备份的注册码即可。

In the second part, emphasis is put on the multiple capacity of orthogonal coded spread-spectrum multiple access system with coherent and noncoherent demodulations. The multiple access capacities of uncoded system and error -correcting coded system are compared. The capacity improvements which result from the use of diversity techniques are also studied.

第二部针对正交码扩频多址系统中多址容量的问题，分析比较了采用纠错码和不加纠错码时OC-SSMA系统的多址容量，并研究了分集技术的采用对OC-SSMA系统容量的提高，指出在信息速率及码片速率相同的条件下，正交码扩频系统的性能明显优于常规扩频系统。

Firstly, the model of distributed single-hop fully-connected FH-PRNs for missile systems is developed in this dissertation, which fully describes the physical and link level characteristics of the network. Common-transmitter-based spreading codes protocol and unslotted ALOHA channel access protocol are adopted, considering two types of services, i. e. Unacknowledged Data Packet and Acknowledged Data Packet.

首先，本文建立了战术导弹武器系统分布式单跳全连接跳频分组无线网的网络模型，所建模型充分地反映了网络的物理层和链路层特性，采用了公共码加发射码的扩频码协议及异步非时隙ALOHA信道访问协议，考虑了两类业务的情况，即无应答数据分组和有应答数据分组。

In the age before digital electronics and computers, code breaking the ciphered messages produced by the Enigma machine was almost impossible even if the code breaker had a working copy of the Enigma machine, as long as he didn't know the right combination of initial electric and mechanical settings, which were also periodically changed.

在前电子计算机时代，就算密码分析与人员得到了完好的恩尼格码机样品，只要不知道恩尼格码机的初始设置组合，要破译恩尼格码密文也是不可能的（另外值得提出的是，恩尼格玛机的初始设置也是定期更换的）。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。