我国高校科研人员Altmetrics评价需求差异研究     

沈兰妮  韩毅 《图书情报工作》2020,64(23):40-52

[目的/意义] 随着Altmetrics研究日益深入，有效识别Altmetrics评价的利益相关方需求对评价指标设计及数据基础设施建设具有重要意义。[方法/过程] 以高校科研人员为对象，利用半结构访谈法识别我国高校科研人员的Altmetrics评价需求，采用问卷调查法获取数据并检验识别出高校科研人员Altmetrics评价需求的差异性。[结果/结论] 研究发现，我国高校科研人员主要有7类Altmetrics评价需求，分别是：研究评价，成果展示，需求发现，学术认可，交流传播，成果操作，学科发展；不同年龄组别高校科研人员在"研究评价"方面有差异，"51-60岁"年龄组较其他年龄组在"研究评价"方面的需求明显偏低；除"交流传播"外，人文学科的6个Altmetrics评价功能需求强度均低于社会学科和自然学科，自然科学与社会科学间的评价需求完全一致；除"研究评价"功能需求在教师与学生存在差异外，6个Altmetrics评价需求对所有不同身份类别高校科学人员没有差异；7类Altmetrics评价需求对高校科研人员具有较高的普遍适用性。  相似文献   

Outstanding performances during elite-standard short and middle-distance finals and the hyperandrogenism regulation—A detailed analysis of Caster Semenya’s results     

Jonathan Ospina-Betancurt  Maria S. Zakynthinaki 《Journal of sports sciences》2020,38(6):703-709

ABSTRACT

Recently, there has been much controversy over the International Association of Athletics Federation (IAAF) regulations regarding eligibility to compete and natural testosterone levels in female athletes. Much interest lies in the analysis of Caster Semenya's extraordinary performance. The objective of this work were, a) Complete an analysis of Caster Semenya's results during the 800m finals and b) search for existing similar performances by other female athletes. We analysed the results of the finals of all IAAF World Championships and Olympic Games from 1984–2016, including the 800m results of the Diamond Leagues 2016–2018. Exponential curves were fit to the data to characterise and predict performance for each event. Caster Semenya's finishing times before her ineligibility to compete and after the suspension of the IAAF hyperandrogenism regulation were found to be 1.24% and 1.49%, respectively, faster than the characteristic performance of the elite-standard in the women’s 800m final. Other female athletes, with finishing times faster than the ones predicted by the characteristic curves were also discovered. The percentage difference in performance between Caster Semenya and the other participants did not reach 3% in the 800m event. No conclusions can be drawn regarding extraordinary results ever performed during the 100m, 200m or 400m finals.  相似文献   

Sum of squares of deviations     

Josef Bukac  Jakub Sulc 《Teaching Statistics》2020,42(1):30-31

The question is whether or not we or any student are allowed to define a measure of variability in some other way that is not written in textbooks and officially approved. We compare the sum of squares of all deviations against the usual sum of squares of deviations from the mean.  相似文献   

Comparing the magnitude and direction of asymmetry during the squat,countermovement and drop jump tests in elite youth female soccer players     

Chris Bishop  Lucas A. Pereira  Valter P. Reis  Paul Read  Anthony N. Turner  Irineu Loturco 《Journal of sports sciences》2020,38(11-12):1296-1303

ABSTRACT

The aims of the present study were to provide an in-depth comparison of inter-limb asymmetry and determine how consistently asymmetry favours the same limb during different vertical jump tests. Eighteen elite female under-17 soccer players conducted unilateral squat jumps (SJ), countermovement jumps (CMJ) and drop jumps (DJ) on a portable force platform, with jump height, peak force, concentric impulse and peak power as common metrics across tests. For the magnitude of asymmetry, concentric impulse was significantly greater during the SJ test compared to CMJ (p = 0.019) and DJ (p = 0.003). No other significant differences in magnitude were present. For the direction of asymmetry, Kappa coefficients revealed fair to substantial levels of agreement between the SJ and CMJ (Kappa = 0.35 to 0.61) tests, but only slight to fair levels of agreement between the SJ and DJ (Kappa = ?0.26 to 0.18) and CMJ and DJ (Kappa = ?0.13 to 0.26) tests. These results highlight that the mean asymmetry value may be a poor indicator of true variability of between-limb differences in healthy athletes. The direction of asymmetry may provide a useful monitoring tool for practitioners in healthy athletes, when no obvious between-limb deficit exists.  相似文献   

Generational differences in the ranking pathways of top 100 ranked golfers     

Aaron Koenigsberg  Jarred Pilgrim  Joseph Baker 《Journal of sports sciences》2020,38(18):2047-2053

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Gender differences in instructional leadership: how male and female principals perform their instructional leadership role     

Haim Shaked  Jeffrey Glanz  Zehavit Gross 《School Leadership & Management》2018,38(4):417-434

The current qualitative study sought to examine how male and female principals enact their instructional leadership. Data were collected through 59 semi-structured interviews with 36 female principals and 23 male principals from Israel, and analysed in a four-stage process – condensing, coding, categorising, and theorising. Findings presented two main differences between male and female principals’ instructional leadership: (a) the source of authority nurturing their instructional leadership; and (b) the integration of instructional leadership with principal-teacher relationships. Gender theories were employed to explain these findings and further research possibilities in this realm are discussed.  相似文献   

Individual differences in an English learning achievement system: gaming flow experience,gender differences and learning motivation     

Jie Chi Yang  Benazir Quadir 《Technology, Pedagogy and Education》2018,27(3):351-366

Despite the growing interest in digital game-based learning (DGBL), there has been a lack of attention paid to the effects of individual differences, such as gaming flow experience and gender differences, in a reward-based achievement system. To this end, this study developed an achievement system with a reward mechanism to facilitate English learning. This study investigated how individuals’ gaming flow experience levels affected their levels of learning motivation, and whether any gender differences existed in gaming flow experience and learning motivation while engaging in the achievement system. The results showed that gaming flow experience significantly predicted learning motivation, whereby the students with high gaming flow experience were six times more likely to have high learning motivation than those with low gaming flow experience. Subsequent analysis showed that the female students had significantly higher gaming flow than the male students, but the male and female students showed similar learning motivation. Furthermore, the results indicated that the male students achieved more interactive rewards than the female students, but no significant differences were found in the male and female students’ achievement of other types of rewards. Based on these findings, the authors contribute to the literature by developing a framework which can be applied to support designers to accommodate individual differences in DGBL.  相似文献   

广东省部(院)共建研发机构的政策性评估调查报告     

张威  熊俊  蒋兆明  蔡齐祥 《科技管理研究》2018,(16)

省、部院共建科研机构是广东21世纪初期经济社会与科技发展的一项成功实施的重大战略措施,具有重要历史意义。通过21世纪初期广东与中国科学院系统、高教大学系统共建的科研机构共建单位自评、对其进行调研及综合评价活动,肯定了11个共建科研机构的建设投资有效或基本有效,其运行具有创新性、效率较高并具有可持续发展的前景。同时对存在的问题也进行了梳理分析。  相似文献   

中国31个省市科技创新效率评价及投入冗余比较          下载免费PDF全文

郭淑芬  张俊 《科研管理》2018,39(4):55-63

深入分析科技创新资源投入的冗余情况，了解我国整体的科技创新效率及31个省市之间的差异，有利于科技创新资源的整合及科技创新效率的提高。文章基于道格拉斯生产函数，构建了包含科技劳动投入、资本投入、技术状况等的区域科技创新效率评价指标体系，并运用CCR-DEA、BCC-DEA和Malmquist-DEA模型测度了2009-2013年中国31个省市的科技创新效率及其年份变动情况，对31个省市的投入冗余进行了比较分类。研究发现，研究期完全有效省份的数量呈增多趋势，但总数仍远不及一半；5年来，基于技术进步各省市的科技创新效率有所提高；只有8个省份属于零冗余地区。当前阶段国家仍需进一步改革科技管理政策，引导区域科技资源优化配置；各省市则应基于当地科技资源冗余情况及资源禀赋，实施具有地方特色的科技创新政策。  相似文献   

浅析体育课堂中体现的文化现象--以十城市视频观测为例     

王容 《体育科技文献通报》2020,(6):137-138,140

本文主要通过观看现场录制的十城市体育赛课视频,对最具代表性的体育课所体现出的体育文化现象进行分析,对比中西方体育文化的差异,探寻在体育全球化的趋势下如何弘扬中华传统文化的秘钥。  相似文献