几种不同信道下Turbo码的误码率性能分析     

张磊  王锦 《天津工程师范学院学报》2014,(2):34-36

介绍了Turbo码的编、译码原理和译码算法,重点对Turbo码在高斯白噪声（AWGN）信道、瑞利衰落信道、莱斯衰落信道下的误码率进行了比较;通过Matlab仿真分析,探讨了Turbo码在不同信道中的优缺点及其适用环境。  相似文献   

无形并列模式下动词拷贝结构的推导分析     

孙文统 《河北北方学院学报(社会科学版)》2014,(5):59-62

动词拷贝结构作为一种较为新兴的、使用频率较高的特定句式,其中所包含的两个动词性成分是具有相同句法地位的结构体。通过典籍中相关构式成分的演化、附加语分布、体标记附着等证据可以证明,动词拷贝结构的生成是基于无形并列模式下的移位推导。  相似文献   

员工道德推脱与不道德行为的关系研究     

周吉 《武汉职业技术学院学报》2013,(5):21-25

随着社会各领域不断有不道德新闻传出,道德问题日益受到人们的关注.以销售人员为研究被试,选取员工道德推脱为主要研究变量,从组织管理的层面出发,探讨道德推脱对不道德行为的影响.发现：性别、工作年限对道德推脱有显著影响;员工道德推脱水平与不道德行为具有显著正相关关系.  相似文献   

Communicating citizenship in China’s digital society     

Bingjuan Xiong 《Journal of International and Intercultural Communication》2019,12(2):128-145

ABSTRACT

This research explores the (inter-) cultural dimension of communicating citizenship in China’s new media environment. It adopts speech codes theory as a theoretical and methodological framework to examine the historically situated and socially constructed meanings of citizenship and the normative communicative conduct for practicing “good citizenship” in China. Through a systematic analysis of Chinese online discourse surrounding two social events, this study captures one speech code pertaining to communicating citizenship that is premised on a paradox – citizenship is interpreted by the Chinese as a legal entitlement that they deserve, but it is simultaneously treated as an aspirational and unattainable ideal. Additionally, speaking sensibly and morally with a communal orientation is heavily emphasized in this speech code as it is considered a valuable communicative practice for performing “good citizenship.” Finally, participating in online collective actions such as “topping posts” is rendered an acceptable and effective way to communicate and enact citizen rights in China.  相似文献   

礼教下母亲的两难选择——论崔夫人     

雷天旭 《青海师专学报》2008,28(4)

《西厢记》中的崔夫人不仅仅是个封建礼教的卫道者,作为一位普通的母亲,在她身上更能体现出来的是慈母的人性美。礼教与现实将她置于两难选择境地当中,她却试图找到一个完美的结合点,从而也使她的形象更为丰富、逼真。  相似文献   

Introducing and Developing Professional Standards in the Information Systems Curriculum     

Elizabeth?TowellEmail author  J.?Barrie?Thompson  Kathleen?L.?McFadden 《Ethics and Information Technology》2004,6(4):291-299

In light of growing concerns in the public and recent mandates from business program accrediting bodies and curricular task forces, the importance of teaching ethical topics in information systems programs is discussed. Innovative strategies used for teaching the application of ethical criteria to common situations are reviewed. Results of a survey of information systems faculty members in the US are presented and are compared to previous studies that related primarily to computer science and software engineering programs. Insight is provided into the topics, techniques, degree of coverage, and assessment techniques currently used when teaching ethics in computing-related programs. Key concerns and future work is also outlined.  相似文献   

关于当代大学生人际互动的思考     

杜凯 《安康学院学报》2004,16(2):111-113

当代大学生人际互动具有发展全面和谐的个性、提高适应社会能力、帮助成才等基本功能.社会的深刻变化使当代大学生人际互动在关系、内容、界限、目的、方式等方面都呈现出新的特点.这些特点既含有正面的价值也含有负面的影响,当代大学生人际互动应该遵循与人为善、诚实守信、尊重他人、相互理解的道德原则.  相似文献   

论周公的礼教思想     

王洪亮 《商丘师范学院学报》2006,22(1):162-165

我国素称“礼仪之邦”。如果说西周以前的“礼”过多地体现了它的伦理功能,而西周以降则使“礼”更多地体现了它的政治功能。周公礼教思想的形成与实施则完成了礼的伦理化向礼的政治化的转变。因此,周公礼教思想之于中国后天的政治、经济、文化、教育等方面的影响是极为深远的。  相似文献   

一种基于重排首次匹配算法的新颖并行Turbo译码器存储方案     

张乐  贺翔  徐友云  罗汉文 《上海大学学报(英文版)》2007,11(4):380-384

In this paper we discuss a novel storage scheme for simultaneous memory access in parallel turbo decoder. The new scheme employs vertex coloring in graph theory. Compared to a similar method that also uses unnatural order in storage, our scheme requires 25 more memory blocks but allows a simpler configuration for variable sizes of code lengths that can be implemented on-chip. Experiment shows that for a moderate to high decoding throughput （40-100 Mbps）, the hardware cost is still affordable for 3GPP＇s （3rd generation partnership project） interleaver.  相似文献   

CDMA技术在数据通信系统中的应用     

李六杏 《合肥联合大学学报》2006,16(3):55-58

人类对更高质量无线通信的需求推动了CDMA技术的出现．CDMA是按照码型结构的差别来分割信号的．在CDMA系统中，用户数的增加相当于背景噪声的增加．在保持高质量通话的同时，CDMA可以容纳更多的用户，CDMA手机的用户每次通话时，系统编码有4．4万亿种可能的排列，具有天然的保密性，其消息在空中信道上被截获的概率几乎为零．CDMA技术的标准化，推进了这项技术在世界范围内的应用．  相似文献