Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract:互联网的发展普及,为新媒体的发展提供了良好的生存发展土壤,近年来移动智能终端设备的快速普及,使新媒体发展到了新的高度。与此同时,传统媒体的生存发展面临严峻挑战,迫切需要转变发展思路,创新发展模式,以迎合时代发展潮流。在融媒体时代,要想整合新媒体与传统媒体的优势,实现内容兼容、资源互通以及宣传共融,这就要求电视新闻编辑必须具有良好的创新能力和融合能力,以契合融媒体时代特征。本文对融媒体时代电视新闻编辑进行简要阐述,分析融媒体时代电视新闻的优劣势,并具体探讨提升电视新闻编辑创新意识和融合能力的策略。
Subjects: Library Science,Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract: [Purpose/significance] This study aims to explore communication contents of college students, and tries to identify the cognitive strategies used in collaborative learning. [Method/process] The experiment was designed based on the information retrieval course and collaborative learning tasks were set up. The online communication records of 30 undergraduate students were collected, coded and analyzed. [Result/conclusion] In the process of Web-based collaborative learning, college students used the middle-level analytical cognitive strategies most, followed by the low-level intuitive cognitive strategies, while the high-level cognitive strategies were rarely used. The research shows that the application of middle level and high level cognitive strategies is positively correlated with the group learning effect.
Subjects: Dynamic and Electric Engineering >> Engineering Thermophysics submitted time 2017-11-23 Cooperative journals: 《工程热物理学报》
Abstract:低温烟气热能的高效梯级利用是火电厂节能减排的重要方向之一。本文结合某1000MW超临界机组,对常规低温省煤器烟气余热利用系统进行了热力学分析,发现该系统可使系统发电标准煤耗率降低2.50 g•(kW•h)-1,但?分析发现,空气预热器耗散?占输入?的22.03%,多于锅炉排烟所携带的?。为此,本文提出了集成SCO2动力循环的火电厂低温烟气热能利用系统,旨在减少空气预热器中的?耗散。对SCO2动力循环参数进行了优化,在优化参数下该系统可以使发电标准煤耗率降低3.62 g•(kW•h)-1,进一步集成低温省煤器可使发电标准煤耗率降低达5.58 g•(kW•h)-1,最后采用?分析结果解释了系统节能的本质原因。
Subjects: Dynamic and Electric Engineering >> Engineering Thermophysics submitted time 2017-10-30 Cooperative journals: 《工程热物理学报》
Abstract:低温烟气热能的高效梯级利用是火电厂节能减排的重要方向之一。本文结合某1000MW超临界机组,对常规低温省煤器烟气余热利用系统进行了热力学分析,发现该系统可使系统发电标准煤耗率降低2.50 g•(kW•h)-1,但?分析发现,空气预热器耗散?占输入?的22.03%,多于锅炉排烟所携带的?。为此,本文提出了集成SCO2动力循环的火电厂低温烟气热能利用系统,旨在减少空气预热器中的?耗散。对SCO2动力循环参数进行了优化,在优化参数下该系统可以使发电标准煤耗率降低3.62 g•(kW•h)-1,进一步集成低温省煤器可使发电标准煤耗率降低达5.58 g•(kW•h)-1,最后采用?分析结果解释了系统节能的本质原因。