Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] By summarizing the research findings of information cocoons, this paper provides a systematic reference for the further study about related theory and practice development in China.[Method/process] Using content analysis, this paper reviewed from five dimensions, including the concept evolution of information cocoons, empirical research on the phenomenon of information cocoons, the influence of information cocoons, the formation of information cocoons, and the countermeasures of cracking information cocoons.[Result/conclusion] The results revealed that research contents at home and abroad is quite different. And there has been dispute about whether information cocoons exist or not. Furthermore, the research depth about the formation mechanism of information cocoons is not enough. Last but not least, the governance research about information cocoons is still inadequate.
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/Significance] Academic discourse power is a carrier of national spirit and culture, and an important embodiment of national soft power. The research on the connotation, the formation mechanism, constituent elements and evaluation of academic discourse power, which is of great significance to improve the national soft power and carry forward the national spirit and culture. [Method/Process] This paper analyzed the mechanism of academic discourse power based on Foucault’s discourse power theory and Lasswell’s 5W communication theory, and focused on the connotation, formation process, constituent elements and the evaluation of academic discourse power. [Result/Conclusion] This paper holds that the components of academic discourse power are the subjects, carriers, the communication media, objects and the implementation effect of academic discourse power.According to the informetrics and scientific evaluation theory, this study constructs an evaluation index system of academic discourse power of scientific research institutions.
Subjects: Geosciences >> Geology submitted time 2023-05-17 Cooperative journals: 《干旱区地理》
Abstract： There are more than 54 spots of Danxia landforms in Shaanxi Province, northwest China, which are distributed in the Weibei Uplift and Yishan Slope of the Ordos Basin. In terms of landscape, both positive and negative Danxia landforms have considerable regional differentiation from southwest to northeast of the province. The sandstones of aeolian desert facies with mainly near horizontal or gently inclined Danxia occurrences are the most widely distributed. They are characterized by gully Danxia, wave Danxia, and colored hills, and most of them are in their early stage. The spatial structure type of Danxia landform distribution in Shaanxi Province is condensed, with two high-density areas (Ganquan-Zhidan-Ansai-Fuxian Danxia area and Yulin Jingbian Danxia area), one medium-density area (Zhaojin-Xunyi-Binxian Danxia area), and two low-density areas (Baoji Jiulongshan area and Fugu Lianhuachan area) according to the nearest neighbor index and nuclear density analysis methods. From the viewpoint of the formation mechanism, Mesozoic sedimentation in the Ordos Basin laid the material foundation for the Danxia landform, regional tectonic evolution controls the distribution of positive and negative landforms, and characteristics of joints and fissures are critical in the landscape pattern of the Danxia landform, and water and wind erosions are the leading forces shaping the landscape form of the Danxia landform.
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