国际足球灵敏研究的社会合作特征与前沿热点解析

为探究国际足球灵敏的整体特征和前沿热点,以Web of ScienceTM为数据来源,CiteSpace和VOSviewer软件为工具,对1997—2019年所收录的347篇足球灵敏研究成果进行文献计量和可视化分析。研究表明:在足球灵敏研究领域,欧美国家发文量和所属期刊最多,而主要发文机构除来自欧美地区之外还有突尼斯和智利等国。足球灵敏研究领域以Ramirez-Campillo等突出作者为中心并形成了较为集中的合作群体,同时以体育科学为中心形成了多学科共融的学科群。足球灵敏研究前沿热点主要包括:足球灵敏与直线速度与力量及爆发力的相关性,同一足球灵敏测试对于不同人群的和新颖测试方法的信效度,提高足球灵敏表现的力量爆发训练的维度与练习动作模式及负荷组织安排,灵敏变向生物力学特征及其在训练之后的急性与长期适应研究。现阶段对于足球灵敏的研究更多侧重于变向能力,而对感知决策能力的关注较少,变向表现的生物力学研究多为动力学和运动学分析,缺少肌电分析。

Evolution Characteristics of Government-Industry-University-Research Cooperative Innovation Network for China＇s Agriculture and Influ- encing Factors： Illustrated According to Agricultural Patent Case

Under the special background of China, the cooperative innovation between different government-industry-university-research institutes plays an increasingly important role in the agricultural field. However, the existing literature has paid little attention to it. Considering the cooperation patents, published in the agriculture field stemming from the Full-text Database of China Patents as the study object, the spatial and institutional attribute of the authors as the data source, and by combining the social network and spatial econometrics analysis, this paper analyzes the structure evolution characteristics of cooperative innovation networks of agricultural government-industry-university-research institute in the city level of China in 1985–2014, based on the triple helix theory, with the influence factors discussed. This shows that, 1) since 1985, China's agricultural innovation level has been substantially increased, but the development degree of the cooperative innovation network is low, and the patent cooperation mainly relies on authors in the same unit; 2) enterprises play a leading role in the agricultural cooperative innovation. The effect of the government and hybrid organizations driven by the government is not obvious; 3) the cooperative innovation in the province and city dominates, and a multi-pole pattern has been formed. The cooperative innovation network structure evolves from a single helix empty core and double helix multi core to a double helix hierarchical network; 4) the city's science, education funding and personnel investment are key factors determining the agricultural cooperative innovation, while the agricultural development of the city presents slight negative impacts on it. The spatial mismatch of supply and demand is present in the technical cooperative innovation of China's agriculture. Therefore, the science enhancement and education investment to big agricultural provinces should be promptly implemented.