The idea of research started with a crazy imaginary theory in the field of astrogeography, saying: We often taught ourselves and then convinced the students that the planet Earth moves despite not feeling the vibratio...The idea of research started with a crazy imaginary theory in the field of astrogeography, saying: We often taught ourselves and then convinced the students that the planet Earth moves despite not feeling the vibrations of traffic, and we listed successive scientific confirmations to indicate the rotation of the planet in a regular movement around its axis once every 24 hours, and it is running in another second movement around the sun once every 365¼ days, so are they only two movements, no more?! Is it possible for him to run at a regular speed in an additional direction?展开更多
以Web of science核心合集数据库收录的277篇外文冰雪运动以及冰雪项目研究文献为研究对象,通过文献计量法、共现分析法、词频分析法,并主要借助CiteSpace Ⅴ对277篇文献进行分析处理。从发文数量、研究机构、研究作者和高频关键词及时...以Web of science核心合集数据库收录的277篇外文冰雪运动以及冰雪项目研究文献为研究对象,通过文献计量法、共现分析法、词频分析法,并主要借助CiteSpace Ⅴ对277篇文献进行分析处理。从发文数量、研究机构、研究作者和高频关键词及时区图绘制知识图谱共现5个维度进行可视化分析和可视化聚合运算,从动态中把握国外冰雪运动研究发展,从关键词共现及其时区演变展示国外冰雪运动研究热点与趋势。结果表明:国外研究发文数量波浪式增长;期刊分布具有稳定的国外期刊群,符合布拉德福定律;研究机构分布均匀,具有一定规模合作效应;已形成多个高产作者群,并且小群体合作较多;高产机构和作者主要分布于冰雪项目大国以及北半球高纬度地区国家的体育类高校或研究所,呈现出集中性和地域性特征。研究热点主要集中在“项目本身→运动员伤病→群众性冰雪运动”的研究领域。展开更多
Shanghai is planning to launch a strategic research of new round of development in 2050,carry out future urban planning research in 2040,and started start the implementation of thirteenth five-year development plannin...Shanghai is planning to launch a strategic research of new round of development in 2050,carry out future urban planning research in 2040,and started start the implementation of thirteenth five-year development planning research. This paper firstly analyzed the relationship between Big Cloud Movement and Maker,and introduced current development situation of makers in Baoshan District of Shanghai. Then,according to current development situation,it came up with recommendations for the maker culture construction: strengthening the awareness for protection of intellectual property right in the district,building " Internet + X" development model for Baoshan District,establishing maker parks in Baoshan District,actively creating the innovation atmosphere,opening the Big Cloud Movement platform the society and promoting generation of grassroots makers,enhancing the cooperation with adjacent district to realize trans-regional cooperation of innovation talents,and introducing social capitals to help innovation teams to make transformation of innovation results.展开更多
Starting from the basic equation of elastic mechanics, without any additional hypotheses of displacement or stress model, just introducing state space and state equation, the model of rock strata movement as complex l...Starting from the basic equation of elastic mechanics, without any additional hypotheses of displacement or stress model, just introducing state space and state equation, the model of rock strata movement as complex laminated plates is presented. In addition, using displacement as a basic unknown quantity, the accurate analytical series solution for the problem of strata movement induced by extraction of horizontal seam is worked out when crosswise isotropic elastic layers are in sliding contact condition. A new approach is put forward to solve the complicated system of mining subsidence.展开更多
文摘The idea of research started with a crazy imaginary theory in the field of astrogeography, saying: We often taught ourselves and then convinced the students that the planet Earth moves despite not feeling the vibrations of traffic, and we listed successive scientific confirmations to indicate the rotation of the planet in a regular movement around its axis once every 24 hours, and it is running in another second movement around the sun once every 365¼ days, so are they only two movements, no more?! Is it possible for him to run at a regular speed in an additional direction?
文摘以Web of science核心合集数据库收录的277篇外文冰雪运动以及冰雪项目研究文献为研究对象,通过文献计量法、共现分析法、词频分析法,并主要借助CiteSpace Ⅴ对277篇文献进行分析处理。从发文数量、研究机构、研究作者和高频关键词及时区图绘制知识图谱共现5个维度进行可视化分析和可视化聚合运算,从动态中把握国外冰雪运动研究发展,从关键词共现及其时区演变展示国外冰雪运动研究热点与趋势。结果表明:国外研究发文数量波浪式增长;期刊分布具有稳定的国外期刊群,符合布拉德福定律;研究机构分布均匀,具有一定规模合作效应;已形成多个高产作者群,并且小群体合作较多;高产机构和作者主要分布于冰雪项目大国以及北半球高纬度地区国家的体育类高校或研究所,呈现出集中性和地域性特征。研究热点主要集中在“项目本身→运动员伤病→群众性冰雪运动”的研究领域。
基金Supported by General Research Project for Education and Science of Shanghai(C16064)Key Project for Undergraduate Education Reform of Colleges and Universities in Shanghai"Research and Practice of Interdisciplinary Cooperation in Shipping Talent Cultivation from the Perspective of Innovation and Entrepreneurship Education"
文摘Shanghai is planning to launch a strategic research of new round of development in 2050,carry out future urban planning research in 2040,and started start the implementation of thirteenth five-year development planning research. This paper firstly analyzed the relationship between Big Cloud Movement and Maker,and introduced current development situation of makers in Baoshan District of Shanghai. Then,according to current development situation,it came up with recommendations for the maker culture construction: strengthening the awareness for protection of intellectual property right in the district,building " Internet + X" development model for Baoshan District,establishing maker parks in Baoshan District,actively creating the innovation atmosphere,opening the Big Cloud Movement platform the society and promoting generation of grassroots makers,enhancing the cooperation with adjacent district to realize trans-regional cooperation of innovation talents,and introducing social capitals to help innovation teams to make transformation of innovation results.
文摘Starting from the basic equation of elastic mechanics, without any additional hypotheses of displacement or stress model, just introducing state space and state equation, the model of rock strata movement as complex laminated plates is presented. In addition, using displacement as a basic unknown quantity, the accurate analytical series solution for the problem of strata movement induced by extraction of horizontal seam is worked out when crosswise isotropic elastic layers are in sliding contact condition. A new approach is put forward to solve the complicated system of mining subsidence.
