论图书馆的电子书服务及数字版权管理   总被引：10，自引：0，他引：10  

王阳 《新世纪图书馆》2006,(1):42-44

电子书产业是伴随因特网发展而出现的一个新的产业，是数字化图书馆建设中的重要组成部分。本文从我国电子书服务的现状和数字版权管理等方面来论述数字图书馆的电子书发展。  相似文献   

ISO9000：2000与图书馆质量管理的原则   总被引：7，自引：0，他引：7  

王建涛 《图书情报工作》2004,48(10):107-111

应用ISO9000：2000的管理理念，对照质量管理标准中的相应条款，分析和阐述图书馆质量管理中应遵循的8项原则：以顾客(用户)为关注焦点；领导作用；全员参与；过程管理；系统管理；持续改进；基于事实的决策和与供方互利。在此基础上，就每项质量管理原则在图书馆中的实际应用提出相应的措施。  相似文献   

文献数据库的检索特点及使用技巧   总被引：3，自引：0，他引：3  

梁花侠  罗红彬  杜香莉 《大学图书情报学刊》2004,22(1):43-45

随着高校图书馆引进的中外文数据库及建立的局域网络检索系统 ,教学科研人员有了快捷、高效、准确查获文献信息的硬件环境。为使读者更好地利用各种数据库进行文献检索 ,文章介绍了文献数据库的检索特点 ,并就数据库检索中检索策略制定的技术性问题 ,如 :检索词的选择、检索式的编写等做了详细介绍。  相似文献   

The IR Has Two Faces: Positioning Institutional Repositories for Success     

John Novak  Annette Day 《New Review of Academic Librarianship》2018,24(2):157-174

This article describes the ongoing efforts at University of Nevada, Las Vegas (UNLV) Libraries to evolve the role of the institutional repository (IR) and to effectively position it within the context of the Libraries’ collections, research support, and scholarly communication services. A major component of this process is re-examining the fundamental aims of the IR and aligning it to the Libraries and the campus strategic goals. The authors situate UNLV Libraries’ experience within the context of the current literature to provide background and reasoning for our decision to pursue two, at times conflicting, aims for the IR: one for scholarly communication and another for research administration.  相似文献   

Technological research in the EU is less efficient than the world average. EU research policy risks Europeans’ future     

Alonso Rodríguez-Navarro  Ricardo Brito 《Journal of Informetrics》2018,12(3):718-731

We have studied the efficiency of research in the EU by a percentile-based citation approach that analyzes the distribution of country papers among the world papers. Going up in the citation scale, the frequency of papers from efficient countries increases while the frequency from inefficient countries decreases. In the percentile-based approach, this trend, which is uniform at any citation level, is measured by the e_p index that equals the P_{top 1%}/P_{top 10%} ratio. By using the e_p index we demonstrate that EU research on fast-evolving technological topics is less efficient than the world average and that the EU is far from being able to compete with the most advanced countries. The e_p index also shows that the USA is well ahead of the EU in both fast- and slow-evolving technologies, which suggests that the advantage of the USA over the EU in innovation is due to low research efficiency in the EU. In accord with some previous studies, our results show that the European Commission’s ongoing claims about the excellence of EU research are based on a wrong diagnosis. The EU must focus its research policy on the improvement of its inefficient research. Otherwise, the future of Europeans is at risk.  相似文献   

基于关联规则的李娜、莎拉波娃相持阶段战术特征比较研究     

楼恒阳  梁名洋  刘文明 《北京体育大学学报》2016,39(10):141-145

摘要：基于关联规则，运用文献资料法、录像观察法、数理统计法等方法对李娜与莎拉波娃以及二人与其他世界优秀女子运动员之间18场硬地单打比赛“相持阶段”战术行为进行了研究，对比分析了两位选手“相持阶段”战术特征，目的是为中国乃至亚洲继续培养优秀的女子单打网球选手提供经验与参考。结论与建议：通过对李娜和莎拉波娃相持阶段的对比研究的结果可以为中国女子单打网球运动员提供经验借鉴。相持阶段应采取大范围调动对手跑动策略，增加在底线斜线相持时候的变线能力。在底线相持中，更应该注重增加正手击球的攻击性。在主动进攻时，应减少中路回球的非受迫性失误概率。  相似文献   

我国企业体育文化质量预警研究     

王朝军  王少博  王晓贞 《北京体育大学学报》2017,40(12):39-44

摘要：以我国企业体育文化质量预警为研究对象，运用文献资料法等研究方法，对我国企业体育文化质量预警的基础、质量建设情况和质量建设过程中存在的关键问题以及我国企业体育文化质量预警机制建设的策略等4个方面所涉及的我国企业体育文化发展与其企业体育文化核心竞争力等问题运用数学模型的形式进行定量、定性分析，得出主要结论：1）我国企业体育文化建设过程中的力量、体育文化效用、体育文化核心竞争力等都表现为较弱，各个企业的发展很不平衡，与其经济基础有着密切关系。2）我国企业体育文化在企业的影响力不足，而企业领导和企业体育管理者及其有关专家对目前的企业体育文化状况基本认同，基层体育工作者和参与者意见不尽统一，存在着较大的问题与危机，必须引起高度重视。3）我国企业体育文化的教育与培训情况不佳，导致对其文化的理解不够深入，身在中国企业体育文化环境之中，却无法准确表达其企业体育文化的内涵等问题，是除了领导不重视以外，教育培训工作薄弱是关键，影响了企业体育文化的传播与发展，也影响着我国企业文化建设及其企业经济效益与社会效益。4）我国企业体育文化质量预警策略是更新理念策略、加大投入策略和培训策略，从而保护和发展我国企业体育文化。这项研究对提示、提醒、发掘、完善我国企业体育文化建设具有引导、警示、促进作用，对进一步发挥企业体育文化建设对增加企业经济效益和社会效益起到积极的推动作用。  相似文献   

The effects of short versus long inter-set rest intervals in resistance training on measures of muscle hypertrophy: A systematic review     

Jozo Grgic  Bruno Lazinica  Pavle Mikulic  James W. Krieger  Brad Jon Schoenfeld 《European Journal of Sport Science》2017,17(8):983-993

Although the effects of short versus long inter-set rest intervals in resistance training on measures of muscle hypertrophy have been investigated in several studies, the findings are equivocal and the practical implications remain unclear. In an attempt to provide clarity on the topic, we performed a systematic literature search of PubMed/MEDLINE, Scopus, Web of Science, Cochrane Library, and Physiotherapy Evidence Database (PEDro) electronic databases. Six studies were found to have met the inclusion criteria: (a) an experimental trial published in an English-language peer-reviewed journal; (b) the study compared the use of short (≤60?s) to long (>60?s) inter-set rest intervals in a traditional dynamic resistance exercise using both concentric and eccentric muscle actions, with the only difference in resistance training among groups being the inter-set rest interval duration; (c) at least one method of measuring changes in muscle mass was used in the study; (d) the study lasted for a minimum of four weeks, employed a training frequency of ≥2 resistance training days per week, and (e) used human participants without known chronic disease or injury. Current evidence indicates that both short and long inter-set rest intervals may be useful when training for achieving gains in muscle hypertrophy. Novel findings involving trained participants using measures sensitive to detect changes in muscle hypertrophy suggest a possible advantage for the use of long rest intervals to elicit hypertrophic effects. However, due to the paucity of studies with similar designs, further research is needed to provide a clear differentiation between these two approaches.  相似文献   

Specific tackling situations affect the biomechanical demands experienced by rugby union players     

Elena Seminati  Dario Cazzola  Ezio Preatoni  Grant Trewartha 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(1):58-75

Tackling in Rugby Union is an open skill which can involve high-speed collisions and is the match event associated with the greatest proportion of injuries. This study aimed to analyse the biomechanics of rugby tackling under three conditions: from a stationary position, with dominant and non-dominant shoulder, and moving forward, with dominant shoulder. A specially devised contact simulator, a 50-kg punch bag instrumented with pressure sensors, was translated towards the tackler (n = 15) to evaluate the effect of laterality and tackling approach on the external loads absorbed by the tackler, on head and trunk motion, and on trunk muscle activities. Peak impact force was substantially higher in the stationary dominant (2.84 ± 0.74 kN) than in the stationary non-dominant condition (2.44 ± 0.64 kN), but lower than in the moving condition (3.40 ± 0.86 kN). Muscle activation started on average 300 ms before impact, with higher activation for impact-side trapezius and non-impact-side erector spinae and gluteus maximus muscles. Players’ technique for non-dominant-side tackles was less compliant with current coaching recommendations in terms of cervical motion (more neck flexion and lateral bending in the stationary non-dominant condition) and players could benefit from specific coaching focus on non-dominant-side tackles.  相似文献   

4周下肢间歇负压干预对优秀赛艇运动员心率变异性和儿茶酚胺的影响     

董徽徽  高炳宏 《上海体育学院学报》2020,(4):78-83

目的探讨下肢间歇负压干预对赛艇运动员心率变异性(HRV)相关指标和儿茶酚胺的影响。方法将国家赛艇队的14名运动员分为试验组和对照组,试验组运动员每周用间歇负压干预5 d,持续4周,对照组无其他干预方式。试验期间均对2组运动员进行HRV相关指标和儿茶酚胺的测试。结果试验前2组运动员各指标均无统计学差异。开始干预后2组的变化如下:①在时域指标中,试验组正常窦性R-R间期标准差(SDNN)在第3周时高于对照组(P<0.05)。②在频域指标中,试验组高频(HF)值在第2周和第3周时高于对照组(P<0.05),而其高频与低频比(LF/HF)在第1、3和4周时低于对照组(P<0.05)。③2组儿茶酚胺组内、组间比较均无统计学差异,但试验组儿茶酚胺下降程度比对照组高。结论4周的间歇负压干预对运动员自主神经系统功能的恢复有明显促进作用,对儿茶酚胺的分泌也具有抑制趋势;这有利于降低运动员心脏负荷,促进运动后的生理恢复。  相似文献