主流媒体在国家媒体体系中处于主导地位。在科技话语权领域,对外主流媒体主导舆论取向并承担维护国家形象之责。文章以China Daily中关于C919的报道为例,基于Vader和LDA主题模型分别进行情感和主题分析,体现了语言学、新闻传播学和计算...主流媒体在国家媒体体系中处于主导地位。在科技话语权领域,对外主流媒体主导舆论取向并承担维护国家形象之责。文章以China Daily中关于C919的报道为例,基于Vader和LDA主题模型分别进行情感和主题分析,体现了语言学、新闻传播学和计算机科学的学科交叉特点。China Daily关于“C919”议题的报道的三大特点为:关注度高、宣传充分,受主要相关事件影响;情感波动明显,新闻标题整体呈客观倾向,正文中积极性情感显著;在主题选择上凸显了C919的技术、成果及中国特色社会主义的制度优势,政治、文化特色明显。以此为建构国家对外科技话语体系提供一定启示。The mainstream media occupies a dominant position in the national media system. In the field of scientific and technological discourse power, external mainstream media dominate the orientation of public opinion and bear the responsibility of maintaining national image. This paper takes the report on C919 in China Daily as an example and analyzes emotion and theme based on Vader and LDA thematic models respectively, which reflects the interdisciplinary characteristics of linguistics, journalism communication, and computer science. The three main features of China Daily’s report on the “C919” are high attention, full publicity, significant emotional fluctuations due to the impact of major related events;objective headlines as a whole, and significant positive emotions in the text;in terms of theme selection, it highlights the technology and achievements of C919 as well as the institutional advantages of socialism with Chinese characteristics, with obvious political and cultural features. This will provide some enlightenment for the construction of the national external discourse system of science and technology.展开更多
目的:研究919糖浆时鸭乙型肝炎的体内抗病毒作用。方法:以感染鸭乙型肝炎病毒(DHBV)的武汉麻鸭为实验动物模型。使1d龄武汉麻鸭感染DHBV,7d后用Dot-EIA法筛选出DHBsAg强阳性鸭。随机分组后给予919糖浆治疗14d,于感染后第7d(为用药前)、...目的:研究919糖浆时鸭乙型肝炎的体内抗病毒作用。方法:以感染鸭乙型肝炎病毒(DHBV)的武汉麻鸭为实验动物模型。使1d龄武汉麻鸭感染DHBV,7d后用Dot-EIA法筛选出DHBsAg强阳性鸭。随机分组后给予919糖浆治疗14d,于感染后第7d(为用药前)、用药7d、14d及停药后3d分别采血,采用斑点杂交方法检测血清DHBVDNA。结果。用药919糖浆7d、14d鸭血清DHBV DNA OD值均明显低于给药前,有显著性差异(P<0.05,P<0.01)。停药3d后没有反跳现象。结论:919糖浆有一定的抑制DHBV DNA复制作用。展开更多
文摘主流媒体在国家媒体体系中处于主导地位。在科技话语权领域,对外主流媒体主导舆论取向并承担维护国家形象之责。文章以China Daily中关于C919的报道为例,基于Vader和LDA主题模型分别进行情感和主题分析,体现了语言学、新闻传播学和计算机科学的学科交叉特点。China Daily关于“C919”议题的报道的三大特点为:关注度高、宣传充分,受主要相关事件影响;情感波动明显,新闻标题整体呈客观倾向,正文中积极性情感显著;在主题选择上凸显了C919的技术、成果及中国特色社会主义的制度优势,政治、文化特色明显。以此为建构国家对外科技话语体系提供一定启示。The mainstream media occupies a dominant position in the national media system. In the field of scientific and technological discourse power, external mainstream media dominate the orientation of public opinion and bear the responsibility of maintaining national image. This paper takes the report on C919 in China Daily as an example and analyzes emotion and theme based on Vader and LDA thematic models respectively, which reflects the interdisciplinary characteristics of linguistics, journalism communication, and computer science. The three main features of China Daily’s report on the “C919” are high attention, full publicity, significant emotional fluctuations due to the impact of major related events;objective headlines as a whole, and significant positive emotions in the text;in terms of theme selection, it highlights the technology and achievements of C919 as well as the institutional advantages of socialism with Chinese characteristics, with obvious political and cultural features. This will provide some enlightenment for the construction of the national external discourse system of science and technology.
文摘目的:研究919糖浆时鸭乙型肝炎的体内抗病毒作用。方法:以感染鸭乙型肝炎病毒(DHBV)的武汉麻鸭为实验动物模型。使1d龄武汉麻鸭感染DHBV,7d后用Dot-EIA法筛选出DHBsAg强阳性鸭。随机分组后给予919糖浆治疗14d,于感染后第7d(为用药前)、用药7d、14d及停药后3d分别采血,采用斑点杂交方法检测血清DHBVDNA。结果。用药919糖浆7d、14d鸭血清DHBV DNA OD值均明显低于给药前,有显著性差异(P<0.05,P<0.01)。停药3d后没有反跳现象。结论:919糖浆有一定的抑制DHBV DNA复制作用。
