专利被引频次的时间影响研究     

罗文馨  赵亚娟 《图书情报工作》2019,63(9):47-60

[目的/意义]研究时间因素对专利被引频次的影响,可以减少时间因素对技术评价活动的制约,提高评价的准确性和可信度。[方法/过程]采集1975-2017年的美国专利数据,开展基于固定效应法的专利被引频次的修正研究。将专利按照不同公开年份和不同技术领域分组,选定组内均值和6个TOP分位数为被引频次基准,统计当前时间点的被引频次基准线及基准线的历史时序变化情况。建立神经网络模型,拟合基准线的时序变化规律,并预测未来统计时间点的基准线。[结果/结论]专利公开年份和统计年份的时间差异,使得专利被引频次无法直接进行比较。本文建立了基于不同技术领域、不同公开年份和不同统计年份的专利被引频次基准线,为专利评估提供参考。  相似文献   

Promoting schoolchildren’s self-esteem in physical education: testing the effectiveness of a five-month teacher training     

Benjamin Rubeli  Esther Oswald  Achim Conzelmann  Jürg Schmid  Stefan Valkanover 《Physical Education & Sport Pedagogy》2020,25(4):346-360

ABSTRACT

Background: Schoolchildren’s personality development is considered a central goal of physical education (PE). With regard to the relationship between psychological well-being and global self-esteem over the life course, the promotion of positive self-esteem is an issue of particular significance. Past research revealed that PE taught with an individualized teacher frame of reference (iTFR) and a reflexive teaching style is associated with positive effects on facets of children’s perceived sports competence. However, it remains an open question whether this teaching styles has the potential to promote positive self-esteem.

Purpose: The present study investigated whether a five-month teacher training, aimed to enhance the teachers’ iTFR and their reflexive teaching style in PE, has a positive effect on students’ perceived sports competence and their global self-esteem. To analyse the implementation quality, changes in students’ perceived iTFR and perceived reflexive teaching style were investigated.

Method: A total of 21 teachers were assigned to either an intervention group (n?=?13), receiving the five-month teacher training, or a control group (n?=?8) consisting of regular teaching without teacher training. The teacher training encompassed five three-hour consecutive sessions during which the teachers acquired theoretical and practical knowledge about the promotion of competence perceptions in PE with a reflexive teaching style and an iTFR. Between the sessions, the teachers were instructed to implement an iTFR and a reflexive teaching style into their own PE classes. To evaluate the effects of the teacher training, their students’ (N?=?315, 53.7% girls, M_age?=?13.2 y, SD_age?=?1.3 y) perceived teaching style (iTFR and reflexive teaching), perceived sports competence and global self-esteem were measured with paper-pencil questionnaires at three measurement points (pre, post and follow-up).

Findings: Linear mixed effect models showed that students of the intervention group reported an increase in their teachers’ reflexive teaching style, but there were no changes with regard to iTFR. With regard to students’ perceived sports competence and global self-esteem, there were significant interaction effects between time and group over a period of eight months (from pre-test to follow-up), indicating positive effects on these self-concept dimensions due to the teacher training.

Conclusion: The present study indicates that a long-term teacher training supports PE teachers to implement teaching styles with the aim to promote students’ self-concept. Furthermore, the findings lead to the assumption that a more pronounced iTFR in combination with an enhanced reflexive teaching style has the potential to positively influence schoolchildren’s perceived sports competence and global self-esteem.  相似文献   

Subtle distinctions in the construction of ‘reference societies’: the conflict-laden introduction of compulsory schooling and universal conscription in Chile (1885–1920)     

Cristina Alarcón 《比较教育学》2018,54(3):411-430

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The Ultimate Survey: Asking One Question at a Time to Get Feedback from Library Users     

Leticia Camacho  Brian Wages  Taylor Harris 《The Reference Librarian》2020,61(1):1-14

ABSTRACT

Libraries use surveys and other instruments to gather feedback from their users. However, with competition from many other campus entities requesting input, how can survey fatigue be avoided? To gather this feedback, the Social Sciences Reference Desk utilized a short, fun and easy method. Each week for 10 weeks during the fall semester of 2017, the reference assistants wrote a survey question on a whiteboard and provided sticky notes for patrons to write their answers. The survey provided valuable information about patrons’ needs and expectations. It also fostered changes that were easily implemented to improve the delivery of library services.  相似文献   

追寻“探索与利用”研究的发展轨迹及知识结构——基于文献计量研究     

刘林青  吕淑雅  梅诗晔 《现代情报》2018,38(3):150-158

探索性活动与利用性活动之间存在知识冲突与需求张力，如何从旨在长期获益的探索性活动和着眼于短期利益的利用性活动之间找寻平衡，是学术和管理实践迫切需要解决的难题。自1991年March提出探索与利用张力以来，相关研究迅速蔓延到组织的许多领域。本文以WOS中1991-2016年间"探索与利用"研究的施引文献为研究对象，从关键词共现、作品共被引、关键路径3个层次进行分析，挖掘该领域的研究热点，知识基础及关键路径，以期为学者提供文献分析的便利。基于上述分析发现，当今"双元性（Ambidexterity）"是该领域的热门研究主题，与"知识管理"、"动态能力"等研究紧密相连；本研究的样本文献从基础理论，"探索与利用"张力相关研究话题，研究方法论3个方面构建了该领域的知识基础；该领域研究存在着"探索与利用"张力的表现形式及解决办法两条关键发展路径，未发现转折点。  相似文献   

Bioimpedance patterns and bioelectrical impedance vector analysis (BIVA) of road cyclists     

Andrea Giorgi  Maurizio Vicini  Luca Pollastri  Erica Lombardi  Emilio Magni  Andrea Andreazzoli 《Journal of sports sciences》2018,36(22):2608-2613

Bioelectrical impedance vector-analysis (BIVA) describes cell-mass, cell function and hydration status of an individual or a group. The goal of the present investigation was to provide bioelectrical impedance data for 525 male road cyclists (155 professionals, 79 elite, 59 elite-youth, and 232 amateurs) at the time of their optimal performance level. Data were plotted on the resistance-reactance (R-Xc) graph to characterize cyclists group vectors using BIVA. Compared to the general male population, the mean vector position of the road cyclists indicates a higher body cell mass (BCM) and phase angle (p<0.001). The vector position of the high-performance, compared to the amateur cyclists showed similar patterns with higher BCM and phase angles and higher reactance values for the high-performance athletes (p<0.001). The bio-impedance data were used to calculate the 50%, 75%, and 95% tolerance ellipses of each group of cyclists. The characteristic vector positions of the road cyclists indicate normal hydration and greater muscle mass and function of the high-performance cyclists compared to amateur cyclists and the normal population. The cyclists specific tolerance ellipses, particularly the high-performance cyclists might be used for classifying a cyclist according to the individual vector position and to define target vector regions for lower level cyclists.  相似文献   

基于马尔可夫模型的高校图书馆学科评价服务研究     

谭智敏  刘万国 《现代情报》2019,39(3):150-156

随着"双一流"建设总体方案的提出，科研成果越来越受到重视，高校图书馆开展学科评价服务，对于提升图书馆的服务和地位具有至关重要的意义。本文在分析了吉林大学2010-2016年发表的论文总体情况的基础上，选取论文发表总量前10名的学科为研究对象，运用文献计量学方法和马尔可夫模型分析方法，与传统的评价指标相结合，构建相应的综合评价指标，消除学科间的基础差异，分析得出各个学科的发展速度和发展趋势情况。  相似文献   

论图书馆数字信息咨询馆员素质和能力   总被引：3，自引：0，他引：3  

林雪华  李俊杰 《现代情报》2006,26(12):79-81

数字信息咨询服务是网络环境下出现的一种不同传统的信息咨询服务，网络环境下的图书馆是一个开放的知识信息资源与服务体系，在这种环境下分析图书馆数字信息咨询馆员素质和能力的重要性。具有高素质和活力信息的咨询馆员，为图书馆实现数字资源可持续发展提供良好的人力资源保证。  相似文献   

支撑中小企业的信息咨询服务的组织机构类型、环境因素及其影响力研究     

张军亮  汪丹 《现代情报》2006,26(3):164-166

论文论述了支撑中小企业的信息咨询服务的组织机构类型，环境因素。包括外部宏观因素和内部微观因素，及信息咨询服务对中小企业的影响等。  相似文献   

中美数字参考咨询服务模式比较研究   总被引：7，自引：0，他引：7  

梁翎  韩惠琴  但旺  朱海雅 《情报科学》2005,23(12):1835-1840

本文概述了数字参考咨询服务模式，并对中美两国数字参考咨询服务的现状进行了阐述。并通过10个对比指标，对中美两国数字参考咨询服务模式进行了比较研究。最后提出了我国图书馆数字参考咨询的发展趋势与方向。  相似文献