高速数字光纤传输系统研究

针对光纤数字传输的特点和低成本千兆芯片,提出了一种新的千兆数字光纤传输的开发设计方案,包括多路复用、编码、解码、解复用、发射机和接收机原理设计、数字视频及多速率业务的接入和恢复以及高速ＰＣＢ板的设计,试验结果证实其效果良好。     

电子海图系统雷达信息转换技术的研究

提出了一种基于三角函数变换的比例乘法器法,解决了方位角和径向距离的坐标变换,最终转换为视频存储器中的位图地址,实现了电子海图系统雷达信息的转换。     

支持Windows2000服务质量机制的多媒体会议系统

论述了实现Internet综合服务体系结构和Windows2000在体系结构及协议中支持Internet实时业务的QoS技术,使Windows2000可以支持远程会议、远程教育、VOD等多媒体服务。借助这些机制,设计出了基于IP QoS技术的多媒体桌式会议系统,详细分析了系统中媒体流的指标参数。     

Copyright regulations as political and economic leverage: the case of the online video industry of China

The recent popularity of video websites has transformed video copyright into one of the most critical issues in regulating the online video industry, especially in countries where video websites have started to thrive because of loose copyright regulations and low public consciousness of copyrights. This study explores copyright regulations in the emerging video website market in China, their objectives and measures, and their effects on the industrial outlook of China. Copyright has been used as political and economic leverage in regulating and shaping the video website market, thereby transforming this industry from an unrestrained Internet medium into a politically obedient and profit-driven business. The consequences of this transformation are analyzed and discussed.     

The Effects of Employee-Led Process Design on Welder Set-Up Intervals

This study focused on improving manufacturing efficiency and production by designing new steps to the work process with an employee focus group. The set-up behaviors of two regular stock welders at a medium-size metal furniture manufacturer were observed via video recordings. The videos of the welders completing their tasks were reviewed in an employee focus group, during which it was determined that designing the welding process to include the use of walkie-talkies would successfully alter the contingencies surrounding set-up behaviors, thereby leading to a decrease in average set-up time. Results for the two welders combined showed a decrease in average set-up time of 2.27 min, with Welder A exhibiting a larger decrease overall and Welder B’s set-up time showing a greater reduction in variability.     

浅谈网络团购及监管问题

随着互联网的迅速发展和用户购物需求的不断增加,网络团购市场也呈现爆炸性的成长。在分析我国网络团购现状和其迅速发展的原因的基础上,指出了这一新兴模式当前存在的问题,并提出了加强团购市场监管的对策和建议,以促进网络团购健康、有序的发展。     

探析视频博客在大学英语听说教学中的应用

随着大学英语教学改革的不断深入,对教学方法和手段的改革提出了更高的要求。近年来出现的视频博客,由于充分实现了信息的自由传播和广泛共享,具有应用于大学英语听说教学的良好前景。它可以激发大学生的英语学习兴趣,提升接受效果和自主学习能力,对于实现“听说领先”的大学英语教学改革具有重要意义。文章选取129名非外语专业学生为对象,通过问卷调查和统计分析,以期掌握视频博客在大学英语听说教学中的应用现状及其一般规律,进一步探索大学英语教学改革的新途径。     

“戏精牡丹”短视频的三重复合形态及其亚文化属性

近年来,戏仿类短视频越来越成为青年亚文化群体表达权利诉求的舆论场。由于戏仿类短视频以互联网为媒介,以掌握着新媒体技术的青年网民为受众,使得它在体现文化内涵时具有与以往的亚文化载体不同的特点,即意见表达的三重复合形态——作为青年亚文化意见表达的工具、商品以及文本。“戏精牡丹”系列是戏仿类短视频的代表性作品,集中体现了意见表达的三重复合形态。首先,通过戏仿类短视频的工具形态记录青年亚文化群体的文化环境。其次,通过戏仿类短视频的商品形态建立青年亚文化群体的自我认知,维持群体认同。再次,通过戏仿类短视频的文本形态表达抵抗话语。戏仿类短视频是青年亚文化群体借助新媒体技术,以戏仿的方式达到与主流话语的换位思考,提示了从“抵抗”到最终“和解”的可能途径,体现了“亚文化”在短视频时代的新特征。     

录像机软件伺服控制定时一体化技术

分析了当前录像机伺服控制系统和定时器系统相分离的两ＣＰＵ结构的缺点和局限，进而提出了伺服／控制／定时系统一体化的方法，给出了数字软件伺服系统的模型，并设计了适用伺服环路的数字补偿滤波器。所有功能均在单片微处理器μＰＤ７８４９１５上编程实现，得到了预期的结果。