基于关键词价值细分的高价值热点主题识别方法研究

对作者关键词进行价值细分研究,有助于识别学科高价值研究热点主题,帮助研究者们精确把握高价值研究主题和学科研究前沿。本文引入营销领域客户价值细分RFM (recency,frequency,monetary)模型,对各个指标进行动态加权,多次实验后,形成多组关键词价值细分结果;从关键词生命周期的角度,结合医学领域的生存分析方法,使用Kaplan-Meier曲线和Logrank检验验证,识别出最优价值细分结果;依据帕累托原则和聚类算法得到高价值热点主题。数据源选择CSSCI (Chinese Social Sciences Citation Index)收录的图情档领域期刊论文,对1998—2019年的题录数据进行实验。相较于已有的热点主题识别方法,本文的识别结果考虑了关键词的价值属性和分类,较好地识别了高价值热点主题。     

Searching for momentum in NBA triplets of free throws

ABSTRACT

The literature on momentum is still undecided, with mixed results whether momentum exists or is only perceived to exist (“hot hand fallacy”). We explore whether momentum exists by looking at cases in which a basketball player has three consecutive free throws. A free throw is a well-defined task executed in a stable environment, allegedly giving momentum optimal chances to occur. Taking 14 NBA seasons we collected over 4500 three-free-throw sets (triplets). We obtained the outcomes of the shots as well as some additional variables about the player and the game: the player’s average free-throw percentage, home or away, and the game score and the quarter when the free throws were attempted. We first analyse the hit rates in the three shots and then proceed to regression analysis that also controls for the abovementioned variables. We address several concerns raised in the literature. All comparisons and analyses yield the same conclusion that there is no evidence for momentum in the data.     

女大学生瑜伽练习中呼吸运用的现状与分析

在高校体育选修课程中,瑜伽通过调吸调身调心,达到身心灵合一的境界,受到众多女大学生的欢迎和喜爱,而在教学过程中,学生普遍存在一些有关呼吸方面的困惑。针对这一问题的现状进行简单分析,提出解决方案,希望对以后的教学工作有一定的指导意义。     

基于关键词共词分析的我国新课改热点研究——以中小学体育课程为例

运用文献资料法、文献计量法、共词分析法、专家访谈法、数理统计法、逻辑分析法等方法,借助BICOMB、SPSS等软件,通过对近年来有关国内体育新课改的234篇硕士学位论文进行文献计量统计、共词分析、知识图谱的绘制和解读,得出体育新课改研究热点不显著但已初见端倪：新课改背景下体育教学的一些研究;体育课与课程标准的研究;围绕体育新课改现状、对策的研究;有关体育教师、体育资源开发与利用的研究。     

(Dis)owning Bikram: Decolonizing vernacular and dewesternizing restructuring in the yoga wars

Undertaking analysis in the area of critical yoga studies, this article identifies two strategies of anticolonial resistance to Bikram Choudhury's copyrighting of a sequence of twenty-six yoga poses. First, it examines decolonial vernacular, which contests Western commodification of yoga through the use and misuse of terms and phrases, such as “yoga piracy” and “cultural patents,” derived from intellectual property rights, international human rights, and cultural property regimes. Second, it considers dewesternizing restructuring emerging from the creation of the Traditional Knowledge Digital Library, a database of information on yogic practice and medicine, which uses non-Western classification systems to interrupt the legal and economic structures through which patents and copyrights are enunciated. Together, these anticolonial strategies force intellectual property rights regimes to integrate Otherness, making space for the recognition of Indian agency in knowledge production.     

外墙保温对夏热冬冷地区住宅空调负荷的影响

采用DeST软件,对夏热冬冷地区外墙保温的住宅进行了全年的能耗模拟,分析了不同外墙保温形式对住宅负荷的影响·     

提高脱硫铁水罐使用寿命的探讨

在铁水罐顶喷脱硫法中，主要存在罐底冲刷侵蚀及缸沿结圈、罐嘴粘渣等现象，通过合理选择耐火材料以及采用正确的维护技术，可提高铁水罐使用寿命。     

新型O型密封圈的研究

本文介绍了橡胶 /膨胀聚四氟乙烯粘合材质的 O型密封圈。实验表明 :新研制的产品使用寿命比丁晴橡胶单体密封圈提高两倍 ,达到进口同类密封件水平。     

无机水合盐热反应体系的研究

在无机盐的热反应体系热力学分析的基础上，对筛选出的具有中低温下无机水合盐热反应体系进行了正逆向剩定分析，并通过TG和DTA方法对其反应热作了定量分析和相应的动力学研究．     

未来新疆城镇居民消费结构的走势分析

分析了未来10～20年新疆城镇居民消费的用途结构、层次结构，并进一步对未来可能的消费热点作了分析。