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Commentary of research situation and innovation frontier in hydro-structure engineering science

Science China(Technological Sciences) 2011年第4期54卷 767-780页

作者： WU ZhongRu PENG Yan LI ZhanChao LI Bo YU Hong ZHENG ShouRen State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai UniversityNanjing 210098China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China National Engineering research Center of Water Resources Efficient Utilization and Engineering Safety Hohai UniversityNanjing 210098China Changjiang Water Resource Commission Wuhan 430071China

In order to utilize water and hydropower resources in China,multitudes of water projects are established or to be constructed as an integral part of the national economy's *** these circumstances,there are two outstanding problems:1) a mass of existing dams are in danger and 2) in the southwest water-conservancy construction plan,dozens of existing or planned dams are high dams or even super high dams with heights between 200 and 300 *** accordance with demands of "the National Program for Medium-and Long-Term Scientific and Technological Development" on the innovation frontier in hydro-structure engineering science,various key problems in science and technology such like stress analysis,ultimate bearing capacity,nonlinearity *** high dams,super high dams and sick dams have been *** paper makes a commentary on the advances and results of the researches,then analyzes the advantages and disadvantages of current theoretics and methodologies,and finally presents corresponding research directions and the frontier of innovation.

关键词： hydro-structure engineering science research situation innovation frontier stress analysis ultimate bearing capacity nonlinearity commentary

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Visual analysis of the research situation of corona virus disease 2019

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Infectious Diseases research 2020年第1期1卷 21-31页

作者： Xiao-Ling Hu Rong Fu Zhi-Fu Su Ming-Hong Peng Si-Min Huang Guizhou University of Traditional Chinese Medicine Guizhou 550002China The Second Affiliated Hospital of GuizhouUniversity of Traditional Chinese Medicine Guizhou 550001China

Objective:To understand the research status of corona virus disease 2019(COVID-19),analyze research hotspots and dynamic frontiers,and provide ideas for the research of ***:Bibliometrics method was used to retrieve documents related to COVID-19 research through China National Knowledge Infrastructure,Web of Science,Pubmed databases,and the number of literature data,author,country,institution,source,keywords using CiteSpace,SPSS,Excel perform statistical analysis on other aspects,explain the current status and development trend of new coronavirus pneumonia research,and analyze and identify the research hotspots and dynamic frontiers of COVID-19 through the visual presentation of knowledge ***:With the global spread of the new coronavirus pneumonia epidemic,a large number of studies on COVID-19 have been performed *** this paper,a total of 7,647 articles were retrieved through a database search,and 5,182 documents that met the criteria were selected for bibliographic analysis,including 2,388 Chinese ***,2,794 English literature,a total of 94 countries,3,985 institutions,10,339 authors participated in the relevant research of COVID-19,involving 999 kinds of journals,the Chinese scientific research team played a major role in the COVID-19 research,providing an important epidemic situation related research ***:The current research focus is primarily on disease recognition,epidemic prevention and control,traditional Chinese medicine,clinical diagnosis and treatment,and epidemiology.

关键词： COVID-19 research situation research hotspot Visual analysis

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Investigations and prospects of Fabry-Perot antennas:a review

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Journal of Systems Engineering and Electronics 2021年第4期32卷 731-747页

作者： LIU Zhiming BORNEMANN Jens LIU Shaobin KONG Xiangkun Department of Electrical and Computer Engineering University of VictoriaVictoria V8W 2Y2Canada College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Fabry-Perot(FP)antennas have characteristics of planar structures combined with high gain,and they have been widely used in wireless *** the progress of ongoing research,FP antennas have achieved various capabilities,but many of them are still under development,such as lowprofile,wideband,circular polarization,multi-band,low-radar cross section(RCS)and reconfigurable *** paper discusses the theoretical analysis methods and research progress of FP antennas,and explains the realization methods of different features of FP *** order to indicate different technologies for realizing various capabilities,the key technologies and features of some of the latest designs are ***,the research situation and prospects of FP antennas are summarized to guide their research directions in the future.

关键词： Fabry-Perot(FP)antenna partially reflective surface research situation research direction

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Current status(modern state) of soybean production and research in the Russian Federation

Current status(modern state) of soybean production and resea...

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第十届全国大豆学术讨论会

作者： Mikhail Sinegovskii All-Russian Scientific research Institute of Soybean

Russia in global soy production is not on the leading positions,however,the country is moving to the global trend,gradually increasing the volume of soybean production,it is due to the demand for *** with the traditional Far Eastern region,it began to spread in the central republics,territories and regions of European part of the country,as well as in the south of Western Siberia,the ***,the total volume of production of this crop in Russia remains extremely insufficient to meet the needs of the national economy in high-protein raw *** to own production only half of the demand is met,the rest is covered by the import of soybeans from Uruguay,Brazil,USA,*** Russian Federation possesses sufficient natural resources,a rich scientific potential and good practices enabling to increase the production of soybean grain,and in the future not only to fully meet its needs,but also to export ecologically pure(not genetically modified) soybeans to European countries at favorable prices,because the demand of such products has *** recent years,soybean production in Russia has been stable positive *** increase in domestic soybean production is mainly due to the expansion of sown *** 15 years,the sown areas have increased 5-fold,the share of soybean in the total sown area of Russia has increased by the same amount,although this figure remains low(3%in 2016).The acreage in Russia in 2016 increased to a level of 2.2 million hectares,which is almost 2 times more than the level since *** increase in sown areas allows to increase the volume of soybean *** out from year to year the acreage of this culture in the country confirm the interest of agricultural *** the Far East,which provides 52%of the total harvest of soybeans,except for the Amur region,the All-Russian leaders in the production of soybeans are Primorsky Krai and the Jewish Autonomous *** All-Russian leader in soybean production

关键词： Russian Federation Soybean production research situation

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细分曲面的研究现状及应用展望

细分曲面的研究现状及应用展望

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第三届全国几何设计与计算学术会议

作者：廖文和刘浩南京航空航天大学机电学院

本文从理论和应用两个角度对细分曲面的研究现状进行了论述,由此指出了细分造型技术进入CAD/CAM领域所必须解决的基本问题。理论方面的论述包括主要细分模式的介绍和细分曲面在数学逻辑上的完善性和严谨性,应用方面的论述包括细分曲面... 详细信息

本文从理论和应用两个角度对细分曲面的研究现状进行了论述,由此指出了细分造型技术进入CAD/CAM领域所必须解决的基本问题。理论方面的论述包括主要细分模式的介绍和细分曲面在数学逻辑上的完善性和严谨性,应用方面的论述包括细分曲面在面向应用的研究中所取得的成果以及应用现状。从本文的论述可以发现,细分方法进入各种三维造型软件成为外形设计的重要手段是细分技术发展的必然趋势,如何用好细分造型技术,使其在实际应用中更好地为外形设计服务是今后研究的关键所在。

关键词： Subdivision Surface research situation Application Prospect

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中国政治传播学研究：回顾与展望

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政治学 2011年第5期

作者：孙帅

中国政治传播学研究在政治传播学学科基本理论、政治传播的范畴和个案研究方面取得了不少成果，提出了相应的理论观点。学者们对政治传播学的研究，初步构建了中国政治传播学学科体系，拓展了政治学研究领域和方法，也为促进政治发展作... 详细信息

中国政治传播学研究在政治传播学学科基本理论、政治传播的范畴和个案研究方面取得了不少成果，提出了相应的理论观点。学者们对政治传播学的研究，初步构建了中国政治传播学学科体系，拓展了政治学研究领域和方法，也为促进政治发展作出了应有贡献，但还存在着体系不完善、理论高度不够和基本概念不清晰、研究方法有待拓展等问题。政治传播学有重要的研究价值，学术界应在构建本土化的政治传播学科、网络政治传播和国际政治传播等方面深化研究。

关键词：政治传播学研究现状研究评价研究前景 political communication research situation research evaluation research prospect

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