Background: COVID-19 has become one of the most serious global epidemics in the 21st Century. This study aims to explore the distribution of research capabilities of countries, institutions, and researchers, and the hotspots and frontiers of coronavirus research in the past two decades. In it, references for funding support of urgent projects and international cooperation among research institutions are provided. Method: the Web of Science core collection database was used to retrieve the documents related to coronavirus published from 2003 to 2020. Citespace.5.6.R2, VOSviewer1.6.12, and Excel 2016 were used for bibliometric analysis. Results: 11,036 documents were retrieved, of which China and the United States have contributed the most coronavirus studies, Hong Kong University being the top contributor. Regarding journals, the Journal of Virology has contributed the most, while in terms of researchers, Yuen Kwok Yung has made the most contributions. The proportion of documents published by international cooperation has been rising for decades. Vaccines for SARS-CoV-2 are under development, and clinical trials of several drugs are ongoing. Conclusions: international cooperation is an important way to accelerate research progress and achieve success. Developing corresponding vaccines and drugs are the current hotspots and research directions.
This paper carries on an illumination design about the computer classroom of Architecture and Civil Engineering College, Taiyuan University of Technology according to the rules of intensity of illumination standard value and lighting power density (LPD) stipulated in the Building Illumination Design Standard (GB50034-2004), and puts forward a feasible project in theory. In accordance with the test and subjective evaluation, it also puts forwanrd the effectiveness and feasibility of the lighting design project through theoretical calculation and actual circumstance in the classroom. This provides a reference for similar computer classroom illumination design.
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