基于短跨度交织的选择性映射

为了抑制多载波通信中发送信号相对较高的峰值功率,提出了一种新的基于交织的选择性映射方案.在该方案中,采用一组交织跨度仅为几个比特的比特级交织器来产生多个表示相同信息的序列,从中选择对应信号峰均比最低的序列作为发送的序列.描述了该方案的实现方式以及这种短跨度交织器的结构.通过仿真考察了该映射方案在降低多载波信号峰均比方面的性能.结果表明该方案在抑制峰均比方面呈现出很好的性能,对于高阶调制信号,如16QAM和64QAM,它甚至达到选择性映射所能实现的最佳性能.与传统的基于交织的选择性映射方案相比较,这种基于短跨度交织的选择性映射方案产生非常短的时间延迟,只需要很少的缓冲寄存器,且易于用硬件实现.     

浅论整合营销传播三要素

整合营销传播是一种全新的营销理念和传播方法。其核心是一切要以消费者为中心,凡是与消费者相关的一切活动都可以纳入营销的范围,可以运用多种传播方式为营销服务。广告、公关、促销三种传播手段的推广组合可以使整合营销传播达到理想的宣传效果。     

武汉地区交通高职教育的品牌发展战略探讨

通过对武汉地区交通类高职院校的发展研究，在开拓“交通品牌”做大做强机制、深化教育教学改革、建设交通特色专业类（群）、提高交通高职院校与交通行业密切结合程度等方面进一步落实科学发展观，使交通高职教育能持续、健康、快速地发展，成为武汉地区高职院校中的一道亮丽的“风景线”。     

CDMA技术在数据通信系统中的应用

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．     

A tale of two mailing lists

This paper serves to report a research study on the use made of two separate mailing lists or listservs, for professional development—Oz-Teachers and UK-Schools. Both lists were, and still are, used by teachers in Australia and the United Kingdom, as well as by teachers across the globe, to communicate electronically with each other. The practice of this communication is typically characterised by text messages that pose questions or offer answers; by threads of discussion based around single or combined themes; and by statements of information. In this context, two windows are opened in this study: one shows a dynamic picture of teachers at work and play in the technology of listservs, developing skills and practices in asynchronous communications. The other looks into the content of many of the postings, demonstrating the practices, views, ideas and concerns teachers have with using technology in traditional school and classroom environments. Whilst this paper provides a detailed overview of the study, the full report of the research programme, of which this study constitutes one part, can be found elsewhere, in Lankshear et al. (1997) and Wild (1999).     

Aligning professional skills and active learning methods: an application for information and communications technology engineering

Engineering education is facing new challenges to effectively provide the appropriate skills to future engineering professionals according to market demands. This study proposes a model based on active learning methods, which is expected to facilitate the acquisition of the professional skills most highly valued in the information and communications technology (ICT) market. The theoretical foundations of the study are based on the specific literature on active learning methodologies. The Delphi method is used to establish the fit between learning methods and generic skills required by the ICT sector. An innovative proposition is therefore presented that groups the required skills in relation to the teaching method that best develops them. The qualitative research suggests that a combination of project-based learning and the learning contract is sufficient to ensure a satisfactory skills level for this profile of engineers.     

整合营销传播视角下的网络化企业社会责任报告研究

创新性地提出网络化社会责任报告(E-CSR Report)的概念,从整合营销传播的视角对网络化企业社会责任报告管理进行深入研究,探讨社会责任报告制定与管理的内部规律性与规范性。在此基础上,从识别利益相关者社会责任信息需求、社会责任实践管理、社会责任信息集成与信息门户的建立、E-CSR Report的制定与营销管理等四个方面构建整合营销传播视角下的E-CSR Report管理应用框架。     

A framework for the application of distributed broadband multimedia communication services in education and training

This paper examines the influence of multimedia communication services in education and training. After a brief introduction in multimedia communication systems and an analysis of the learning process, a framework for the application of distributed, broadband multimedia communication services in education and training is proposed. Its main elements, which are a set of requirements, a generic layered model and a list of important related matters, are then discussed in considerable detail. Finally, the application of the proposed framework in the field of telecommunications training is suggested     

传播“五要素”在人文科教电视中的作用

新闻中的时间、地点、人物、原因、结果等传播内容＂五要素＂,在电视新闻类节目中不可或缺,并作为重点被新闻学者研究。文章从具体案例出发,分析传播内容＂五要素＂在人文科教电视节目中的应用,阐述其在人文科教电视中的重要作用和意义。     

网络传播中公众自我议程设置的道德预警

随着网络在我国的普及,公众的话语权得到了极大的扩张,他们运用网络形成自我议程设置的机会日益增多,随之而来的负面影响也逐渐显露出来.本丈以"甘德怀事件"为案例,通过对公众自我议程设置带来的不良影响进行分析,提出网络时代社会道德预警建议:加强网民自律,完善网络自身管理,进行网络道德建设.