基于矩阵扩展方法的多速率线性离散码设计

在采用空时码的无线通信系统中,收发2端较差的路径会降低系统的性能.提出了多速率线性离散码(LDC),并对其进行了分析,给出了一种基于矩阵扩展方法的设计算法.多速率LDC是传统LDC和LDC-TAS的BER性能的折中.进而提出了一种性能优于传统LDC-A-TAS算法的多速率LDC自适应发送天线选择(A.TAS)算法.     

教育信息化数据可靠性优化研究

在教育信息化发展的背景下,对数字化校园系统中数据错误产生的因素进行分析,给出数据可靠性的数理依据,提出从采集源头、流转过程控制等方面提高教育信息化数据可靠性的思路,表明通过采集源头、流转过程控制等优化方法大大提高数据流转过程中信息量的稳健性和可靠性。     

Analysis on Sense of Time in Different Countries

Great changes have brought about the shrinkage of the Earth in effect,it became a global village. In this situation,it will be better if we could know something about our business partner or someone else with a different cultural background. By the processing of learning,we could see the deep reason,appreciate the diversity of cultures,respect the differences,anticipate the potential problems in intercultural communicates and improve the ability to deal with them.     

一种改进的多边类LDPC码的扩展算法

码率自适应编码技术是为了充分利用移动通信中的频谱资源而出现的。现有的扩展算法尽管能够构造出码率范围很广的码率自适应扩展型多边类LDPC码,但是错误地板较高。对此,本文提出一种新的扩展算法——分级扩展算法,适用于任何多边类LDPC码且降低了错误地板。在AWGN信道下,仿真结果表明,所提出的算法较传统的扩展算法具有更好的性能。     

几种不同信道下Turbo码的误码率性能分析

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。     

无形并列模式下动词拷贝结构的推导分析

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。     

员工道德推脱与不道德行为的关系研究

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.     

Communicating citizenship in China’s digital society

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.     

礼教下母亲的两难选择——论崔夫人

《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。     

Introducing and Developing Professional Standards in the Information Systems Curriculum

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.