多维累加型交叉并联单奇偶校验码的性能分析

多维累加型交叉并联单奇偶校验(M-ACPC-SPC)码是一种新的纠错编码,该码具有较低的编、译码复杂度及较好的误比特率性能。推导了M-ACPC-SPC码的平均输入冗余重量枚举函数,由此提出了该码的误比特率性能上界及该码在高信噪比条件下误比特率的近似表达式,其近似结果与仿真值匹配良好。分析表明,随着交织长度及交织器数目的增加,M-ACPC-SPC码的错误平层逐渐降低,为M-ACPC-SPC码的设计提供了有效的参考依据。     

并行支路卷积碼譯碼算法之簡化

本文主要工作:(1)从算法上证明了对于TCM用的一类有并行转移支路的卷积玛,其VITERBI译码算法可以作很有效的简化,而且简化不影响译码性能。(2)给出了表征算法复杂性的公式,讨论了简化效果。简化算法的复杂性约为常规算法的1/2~P。(3)用计算机模拟验证了简化算法和常规算法的等效性。因而,算法的简化不影响译码性能。     

Corporate Ethics Codes: A New Generations' Tool for Strategic Global Management and Decision-Making

The premise of this article is that it is important to train domestic and international executives in management ethics using corporate ethics codes. Incorporating ethics codes into the professional development of executives in business and industry contributes to the institutionalization of codes in the global workplace. Ethics institutionalization imbues corporate structures with understanding, both internally and externally, of the concepts of ethics. At an east coast University School of Management a Comparative Code Method (CCM) was developed and tested. Among the major findings, was that the use of corporate codes quickly transitions employees from an individual ethical perspective to a corporate ethical perspective. This revised version was published online in August 2006 with corrections to the Cover Date.     

出镜记者应对突发新闻事件策略研究

针对电视新闻现场直播报道呈常态化的趋势,从对出镜记者的内涵认识入手,结合突发新闻事件现场的特点,详细论述了电视新闻直播报道中,出镜记者如何发挥好＂我在现场＂的优势,从不同角度把握好突发新闻事件的现场,确保电视新闻现场直播报道传播效果的实现。     

高校教学信息员制度的意义与实践问题的思考

学生在教学活动中处于主体地位,让学生参与学校管理及其制度建设,从学生角度了解课堂教学效果,反馈学生对课堂讲授、教学管理、教学条件、教学改革方面的意义和建议意义十分重大。从教学信息员的作用、存在的问题和在实践中如何更有效的促进教学管理工作的不断完善进行了探索。     

消费领域法律与习惯的冲突——质疑"四舍五入"

从现实生活中存在的一些“四舍五入”现象入手,首先对其做出一个定性分析,然后从法律的层面上进行探讨,进而揭示“四舍五入”中所包含的不公平及其违法性,期望能引起更多的共鸣,起到抛砖引玉的作用,从而可以更好地维护好消费者的合法权益。     

荀子伦理思想初探

荀子是先秦儒家思想的集大成者,“性恶论”是其独具特色的思想观点。在“性恶论”的理论基础上,荀子主张“化性起伪”;在义利观上,他主张“义利并举”;在政治思想上,他提倡“隆礼重法”。     

Researcher Perceptions of Ethical Guidelines and Codes of Conduct

Ethical codes of conduct exist in almost every profession. Field-specific codes of conduct have been around for decades, each articulating specific ethical and professional guidelines. However, there has been little empirical research on researchers’ perceptions of these codes of conduct. In the present study, we interviewed faculty members in six research disciplines and identified five themes bearing on the circumstances under which they use ethical guidelines and the underlying reasons for not adhering to such guidelines. We then identify problems with the manner in which codes of conduct in academia are constructed and offer solutions for overcoming these problems.     

基于滤波-还原的二维条码识别投影算法

给出了一种基于PDF417二维条码结构特性的算法,该方法设计滤波器滤除噪声部分,再采用点搜索法进一步去除不符合条码边界特点的孤立的点和容易与边界混淆的竖直划痕。对条码图像进行复原,由于基本清除了污染,污染部分找不到复原的种子,不会被恢复。该方法可以去除滤波对有效条码边缘的影响,同时保证图像的可靠恢复。对于恢复后的条码图像采用改进的边缘检测投影方法译码。实验结果表明该方法具有良好的性能,可以降低对条码纠错等级的要求,提高了译码的效率和准确率。