交叉集聚变异的数据调度路径损耗优化估计

在流媒体大数据调度中,因路径损耗较大,产生调度延时和频谱失真,需要对路径损耗进行优化评估,提高对流媒体大数据库的访问速度和检索定位。提出一种基于交叉集聚变异最小延时的流媒体大数据调度路径损耗评估模型,基于遗传算法设计流媒体数据集聚调度模型,得到流媒体数据调度的位置变换策略。确定流媒体数据编码方案,构建流媒体网络通信代价矩阵控制的数据调度路径损耗模型,实现算法改进。实验结果表明,该模型能使流媒体数据调度路径损耗有效降低,优化流媒体数据传输,最终达到最小传输时延,避免了调度延时和失真。     

Exploring viewer participation in online video game streaming: A mixed-methods approach

Video game streaming (VGS) has attracted hundreds of millions of viewers all over the world to not only watch but also participate in a variety of VGS activities, such as interacting with streamers and other co-viewers, gift-giving, and social sharing of the viewing experience. The success of the VGS paradigm depends on the active participation of the viewers, since it creates economic, hedonic, and social values. This study applied a mixed-methods approach to explore the critical environmental stimuli evoking viewers’ cognitive and emotional state and empirically tested a research model examining viewers’ participation. Using qualitative interviews, three environmental stimuli were identified (i.e., broadcaster appeal, medium appeal, and perceived co-viewer involvement), which were adopted in the quantitative research model. The research findings suggested that environmental stimuli were positively related to both cognitive and emotional organisms, namely cognitive involvement and arousal, which in turn impacted viewers’ participation.     

现代教育技术在电子商务课程教学中的应用

电子商务课程教学的要求与一般课程相比,有其独特性,运用现代教育理论和现代信息技术来开展教学,对整个教学过程和教学资源的设计、开发、利用及管理实现理论与实践的最优化。提出课堂教学创新的模型,对比传统教学方式,分析利用现代教育技术实现流媒体传输的基本方式和亟待解决的几个技术问题。