以Web of Science核心数据库1979~2023年“plyometric”“stretching-shorten cycle”和“drop jump”为研究主题的2927篇文献作为数据来源,利用CiteSpace软件对快速伸缩复合训练研究的时间、学科、关键词、时间序列进行分析,进而梳理...以Web of Science核心数据库1979~2023年“plyometric”“stretching-shorten cycle”和“drop jump”为研究主题的2927篇文献作为数据来源,利用CiteSpace软件对快速伸缩复合训练研究的时间、学科、关键词、时间序列进行分析,进而梳理出快速伸缩复合训练的演进脉络及理论体系如下:(1)快速伸缩复合训练的年发文量保持着逐年上涨的趋势;(2)从学科特点来看,体育科学与生理学相关领域研究在快速伸缩复合训练研究中占据主导地位;(3)从科研产出来看,美国的研究成果目前处于领先地位且研究机构均集中于高校;(4)快速伸缩复合训练可划分为训练机制、运动表现与损伤康复三个热门主题;(5)未来快速伸缩复合训练的研究重点将会集中在训练的监测、应用与康复方面。展开更多
The nonlinear aeroelastic response of a two-degree-of-freedom airfoil with freeplay and cubic nonlinearities in supersonic flows is investigated. The second-order piston theory is used to analyze a double-wedge airfoi...The nonlinear aeroelastic response of a two-degree-of-freedom airfoil with freeplay and cubic nonlinearities in supersonic flows is investigated. The second-order piston theory is used to analyze a double-wedge airfoil. Then, the fold bifurcation and the amplitude jump phenomenon are detected by the averaging method and the multi-variable Floquet theory. The analyticall results are further verified by numerical simulations. Finally, the influence of the freeplay parameters on the aeroelastic response is analyzed in detail.展开更多
文摘以Web of Science核心数据库1979~2023年“plyometric”“stretching-shorten cycle”和“drop jump”为研究主题的2927篇文献作为数据来源,利用CiteSpace软件对快速伸缩复合训练研究的时间、学科、关键词、时间序列进行分析,进而梳理出快速伸缩复合训练的演进脉络及理论体系如下:(1)快速伸缩复合训练的年发文量保持着逐年上涨的趋势;(2)从学科特点来看,体育科学与生理学相关领域研究在快速伸缩复合训练研究中占据主导地位;(3)从科研产出来看,美国的研究成果目前处于领先地位且研究机构均集中于高校;(4)快速伸缩复合训练可划分为训练机制、运动表现与损伤康复三个热门主题;(5)未来快速伸缩复合训练的研究重点将会集中在训练的监测、应用与康复方面。
文摘The nonlinear aeroelastic response of a two-degree-of-freedom airfoil with freeplay and cubic nonlinearities in supersonic flows is investigated. The second-order piston theory is used to analyze a double-wedge airfoil. Then, the fold bifurcation and the amplitude jump phenomenon are detected by the averaging method and the multi-variable Floquet theory. The analyticall results are further verified by numerical simulations. Finally, the influence of the freeplay parameters on the aeroelastic response is analyzed in detail.
