首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   39166篇
  免费   891篇
  国内免费   450篇
教育   26514篇
科学研究   5943篇
各国文化   33篇
体育   2705篇
综合类   2202篇
文化理论   21篇
信息传播   3089篇
  2024年   43篇
  2023年   128篇
  2022年   543篇
  2021年   944篇
  2020年   1307篇
  2019年   993篇
  2018年   632篇
  2017年   720篇
  2016年   811篇
  2015年   1184篇
  2014年   2510篇
  2013年   3183篇
  2012年   3139篇
  2011年   3235篇
  2010年   2310篇
  2009年   2061篇
  2008年   2388篇
  2007年   2927篇
  2006年   2566篇
  2005年   2206篇
  2004年   1829篇
  2003年   1641篇
  2002年   1186篇
  2001年   969篇
  2000年   466篇
  1999年   171篇
  1998年   107篇
  1997年   68篇
  1996年   49篇
  1995年   35篇
  1994年   42篇
  1993年   24篇
  1992年   23篇
  1991年   15篇
  1990年   11篇
  1989年   5篇
  1988年   4篇
  1987年   5篇
  1986年   2篇
  1985年   2篇
  1984年   3篇
  1979年   2篇
  1978年   1篇
  1977年   3篇
  1976年   6篇
  1957年   8篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
The purpose of this study was to examine the outcomes of information literacy instruction for the Design first year students at the Temasek Polytechnic Library. Also of interest was whether or not the librarian was being seen as easily approachable, and if the students were deeming the lessons to be worthwhile. A participant action research approach was used, with the data being collected from multiple choice tests delivered via the institutional learning management system, group exercises, and a diagnostic assessment that was delivered before the workshops. It was found that the students did see the librarian as someone who was eminently approachable, and the majority of them found the lessons to be of value. It was concluded that the use of a diagnostic tool can be very useful in highlighting the gaps in students' knowledge, and that it would be beneficial to use it for all information literacy instruction at TP. Suggested future research could include a study of how much the students retain of IL skills into their third year of study.  相似文献   
82.
Librarians in Sweden are facing huge challenges in meeting the demands of their organisations and users. This article looks at four key areas: coping with open science/open access initiatives; increasing demands from researchers for support doing systematic reviews; understanding user experiences in Swedish health science libraries; and the consequences of expanding roles for recruitment and continuing professional development. With regard to changing roles, there is an increasing shift from the generalist towards the expert role. The authors raise the issue as to how to prepare those new to the profession to the changing environment of health science libraries.  相似文献   
83.
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   
84.
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 ep index that equals the Ptop 1%/Ptop 10% ratio. By using the ep 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 ep 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   
85.
随着新课程改革的不断推进,教师权威受到严峻的挑战。教师权威的存在是客观且有其合理性的。新课程消解了教师的知识权威、传统权威和法定权威。重建教师权威,需要从转换教师角色、改善知能结构、完善人格等几个方面着手。  相似文献   
86.
贯彻《行政许可法》,依法加强药品监督管理,其根本目的是保证药品质量,保障人民用药安全有效。必须加强药监队伍建设,树立公正执法形象,构建健康有序的药品市场,实现药品监督执法的规范化、法治化。  相似文献   
87.
科学仪器是科学研究不可或缺的工具,是推进高水平自立自强的重要基石和保障。重大科技基础设施研发建设催生诸多具有产业应用前景的科学仪器及相关技术,但转移转化尚任重道远。欧盟基于“开放科学、开放创新与向世界开放”理念设立ATTRACT项目,尝试加速推进重大科技基础设施探测和成像相关的实验技术产品化与市场化,构建基于科学仪器创新价值链的创新生态系统。文章围绕国内科学仪器项目组织现状与管理特点,深入剖析ATTRACT项目的组织管理模式,以期为我国加速重大科技基础设施先进技术转化,优化科学仪器创新资源配置,突破高端科学仪器研发与转化瓶颈提供支撑和参考。  相似文献   
88.
高校科研管理队伍建设现状与对策   总被引:1,自引:0,他引:1  
本文针对我国当前科技与产业发展形势,探讨了我国高校科研管理队伍建设中存在的问题,并就在新形势下加强高校科研管理队伍建设提出相应的对策。  相似文献   
89.
发展乡村旅游是社会主义新农村建设的重要途径   总被引:2,自引:0,他引:2  
乡村旅游是当前和未来一段时期内我国社会主义新农村建设的重要组成部分。分析了乡村旅游与社会主义新农村建设的良性互动关系,提出了立足长远、科学规划、合理布局、突出本土化、走特色化道路、不断创新的发展乡村旅游事业的具体对策,旨在促进乡村旅游的可持续发展。  相似文献   
90.
建设国家热带作物工程技术研究中心的可行性探讨   总被引:1,自引:0,他引:1  
针对热带作物生产发展现状,分析了热带作物产业在我国农业生产中的重要性,探讨了建立国家热带作物工程技术研究中心对提高热带作物产业的核心竞争力,加快我国热带作物产业健康发展的必要性和可行性。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号