China’s booming"unicorns"benefit from the country’s education system and social environment that put emphasis on science and innovation,which has laid a solid foundation for the innovation-driven developme...China’s booming"unicorns"benefit from the country’s education system and social environment that put emphasis on science and innovation,which has laid a solid foundation for the innovation-driven development of tech firms and the Chinese economy.AT the end of September 2017,CB Insights,the U.S.展开更多
Purpose:Using the metaphor of"unicorn,"we identify the scientific papers and technical patents characterized by the informetric feature of very high citations in the first ten years after publishing,which ma...Purpose:Using the metaphor of"unicorn,"we identify the scientific papers and technical patents characterized by the informetric feature of very high citations in the first ten years after publishing,which may provide a new pattern to understand very high impact works in science and technology.Design/methodology/approach:When we set CT as the total citations of papers or patents in the first ten years after publication,with CT≥5,000 for scientific"unicorn"and CT≥500 for technical"unicorn,"we have an absolute standard for identifying scientific and technical"unicorn"publications.Findings:We identify 165 scientific"unicorns"in 14,301,875 WoS papers and 224 technical"unicorns"in 13,728,950 DII patents during 2001–2012.About 50%of"unicorns"belong to biomedicine,in which selected cases are individually discussed.The rare"unicorns"increase following linear model,the fitting data show 95%confidence with the RMSE of scientific"unicorn"is 0.2127 while the RMSE of technical"unicorn"is 0.0923.Research limitations:A"unicorn"is a pure quantitative consideration without concerning its quality,and"potential unicorns"as CT≤5,000 for papers and CT≤500 for patents are left in future studies.Practical implications:Scientific and technical"unicorns"provide a new pattern to understand high-impact works in science and technology.The"unicorn"pattern supplies a concise approach to identify very high-impact scientific papers and technical patents.Originality/value:The"unicorn"pattern supplies a concise approach to identify very high impact scientific papers and technical patents.展开更多
In the end of October,The Hurun Research Institute released the inaugural Hurun Global Unicorn List 2019,a ranking of the world’s billion-dollar tech“start-ups”founded in the 2000s and not yet listed on a public ex...In the end of October,The Hurun Research Institute released the inaugural Hurun Global Unicorn List 2019,a ranking of the world’s billion-dollar tech“start-ups”founded in the 2000s and not yet listed on a public exchange.This is the first year of the list,and follows on from the 6th quarterly Hurun China Unicorn Index.Valuations are a snapshot of 30 June 2019.展开更多
We classify the almost regular weakly stretch non-Randers-type(α,β)-metrics with vanishing Scurvature.In the class of regular metrics,they reduce to Berwald ones.Here,we demonstrate that when an almost regular weakl...We classify the almost regular weakly stretch non-Randers-type(α,β)-metrics with vanishing Scurvature.In the class of regular metrics,they reduce to Berwald ones.Here,we demonstrate that when an almost regular weakly stretch non-Randers-type(α,β)-metric with vanishing S-curvature is not Berwaldian,then it is a weakly generalized unicorn.This yields an extension of Zou-Cheng and Chen-Liu’s theorems.Finally,we show that any projective non-Randersβ-change of a unicorn is a unicorn.展开更多
文摘China’s booming"unicorns"benefit from the country’s education system and social environment that put emphasis on science and innovation,which has laid a solid foundation for the innovation-driven development of tech firms and the Chinese economy.AT the end of September 2017,CB Insights,the U.S.
基金National Natural Science Foundation of China Grant No.71673131Jiangsu Key Laboratory Fundsupport from the International Joint Informatics Laboratory operated cooperatively by the University of Illinois at Urbana-Champaign,USA and Nanjing University,China。
文摘Purpose:Using the metaphor of"unicorn,"we identify the scientific papers and technical patents characterized by the informetric feature of very high citations in the first ten years after publishing,which may provide a new pattern to understand very high impact works in science and technology.Design/methodology/approach:When we set CT as the total citations of papers or patents in the first ten years after publication,with CT≥5,000 for scientific"unicorn"and CT≥500 for technical"unicorn,"we have an absolute standard for identifying scientific and technical"unicorn"publications.Findings:We identify 165 scientific"unicorns"in 14,301,875 WoS papers and 224 technical"unicorns"in 13,728,950 DII patents during 2001–2012.About 50%of"unicorns"belong to biomedicine,in which selected cases are individually discussed.The rare"unicorns"increase following linear model,the fitting data show 95%confidence with the RMSE of scientific"unicorn"is 0.2127 while the RMSE of technical"unicorn"is 0.0923.Research limitations:A"unicorn"is a pure quantitative consideration without concerning its quality,and"potential unicorns"as CT≤5,000 for papers and CT≤500 for patents are left in future studies.Practical implications:Scientific and technical"unicorns"provide a new pattern to understand high-impact works in science and technology.The"unicorn"pattern supplies a concise approach to identify very high-impact scientific papers and technical patents.Originality/value:The"unicorn"pattern supplies a concise approach to identify very high impact scientific papers and technical patents.
文摘In the end of October,The Hurun Research Institute released the inaugural Hurun Global Unicorn List 2019,a ranking of the world’s billion-dollar tech“start-ups”founded in the 2000s and not yet listed on a public exchange.This is the first year of the list,and follows on from the 6th quarterly Hurun China Unicorn Index.Valuations are a snapshot of 30 June 2019.
文摘We classify the almost regular weakly stretch non-Randers-type(α,β)-metrics with vanishing Scurvature.In the class of regular metrics,they reduce to Berwald ones.Here,we demonstrate that when an almost regular weakly stretch non-Randers-type(α,β)-metric with vanishing S-curvature is not Berwaldian,then it is a weakly generalized unicorn.This yields an extension of Zou-Cheng and Chen-Liu’s theorems.Finally,we show that any projective non-Randersβ-change of a unicorn is a unicorn.
