全文获取类型
收费全文 | 30515篇 |
免费 | 1055篇 |
国内免费 | 946篇 |
专业分类
教育 | 19300篇 |
科学研究 | 6191篇 |
各国文化 | 125篇 |
体育 | 1844篇 |
综合类 | 1903篇 |
文化理论 | 32篇 |
信息传播 | 3121篇 |
出版年
2024年 | 34篇 |
2023年 | 186篇 |
2022年 | 443篇 |
2021年 | 801篇 |
2020年 | 958篇 |
2019年 | 784篇 |
2018年 | 604篇 |
2017年 | 598篇 |
2016年 | 794篇 |
2015年 | 993篇 |
2014年 | 1560篇 |
2013年 | 2181篇 |
2012年 | 2555篇 |
2011年 | 2570篇 |
2010年 | 1644篇 |
2009年 | 1603篇 |
2008年 | 2028篇 |
2007年 | 2281篇 |
2006年 | 2269篇 |
2005年 | 1893篇 |
2004年 | 1545篇 |
2003年 | 1178篇 |
2002年 | 894篇 |
2001年 | 634篇 |
2000年 | 473篇 |
1999年 | 251篇 |
1998年 | 158篇 |
1997年 | 136篇 |
1996年 | 105篇 |
1995年 | 65篇 |
1994年 | 57篇 |
1993年 | 52篇 |
1992年 | 50篇 |
1991年 | 30篇 |
1990年 | 25篇 |
1989年 | 25篇 |
1988年 | 5篇 |
1987年 | 6篇 |
1985年 | 5篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 12篇 |
1978年 | 7篇 |
1977年 | 5篇 |
1976年 | 11篇 |
1957年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
191.
This article explores how the library-student liaison program at Eastern Washington University (EWU) Libraries has evolved into an opportunity for students to develop leadership skills. Originally designed to foster better communication between the EWU Libraries and students enrolled at the university, we recognized that the process of achieving established goals for the program provided a vehicle for students' leadership-skill development. To facilitate the leadership process, librarians employed the Social Change Model. Designed specifically for college students, this model engages the student to develop individual capacities to strengthen group activities that foster positive changes in the community and society. 相似文献
192.
[目的/意义]旨在确定信息披露行为影响因素,优化电子健康网站生态环境,间接助力"健康中国2030"战略目标的实现。[方法/过程]采用质性研究方法,对访谈资料进行三级编码,抽取影响电子健康网站用户信息披露的17个主范畴及5个核心范畴,并构建电子健康网站用户信息披露行为影响因素模型。[结果/结论]电子健康网站用户信息披露行为主要受到用户感知效用、感知风险、主观规范、服务质量和病情特征影响。其中,感知效用是最重要影响因素,感知风险是次重要影响因素,主观规范是较重要影响因素,服务质量和病情特征是相对不重要影响因素。据此,从政府部门、电子健康网站和用户3个维度,总结相关启示。 相似文献
193.
Veronika Karnowski Larissa Leonhard Anna Sophie Kümpel 《Communication Research Reports》2018,35(2):91-100
Social media have become an integral part of online news use, affecting how individuals find, consume, and share news. By applying the Theory of Reasoned Action (TRA), this study investigates the effects of motives, attitude, and intention on news-sharing behavior among German social media users (n = 333). Findings show that news-sharing attitude and subjective norms have a positive effect on news-sharing intention, which in turn has a positive effect on actual news-sharing behavior. Taken together, we see that a new media behavior in the early phases of its societal diffusion—like social media news sharing in Germany in 2015—can mainly be explained by a rational choice logic and is rooted in the motives of socializing and information seeking. This finding thus reflects the double nature of social media as a means for both information retrieval and social grooming. 相似文献
194.
Holly Thompson 《Medical reference services quarterly》2018,37(1):97-104
The National Institutes of Health (NIH) library instruction program provides training services to staff, clinicians, and researchers across NIH and several Department of Health and Human Services (HHS) operating divisions. The audience, training needs, and training topics are diverse and constantly changing. The NIH library has developed several new services and class topics to meet the needs of its NIH and HHS communities. Context, strategies, and future directions for the NIH library instruction program are described. 相似文献
195.
期刊评价中文献老化理论视角的研究相对薄弱。本文探究生存分析法在学术期刊评价上的应用,在理论上
克服了因领域差异导致的壁垒,并选取CSTPCD中30家中文物理学科期刊作为样本数据集进行实证研究。通过对论文
被引时序数据进行分析,研究物理学科文献老化规律,并选取样本期刊进行对比分析,以探究期刊评价的新思路。 相似文献
196.
Lotta Haglund Annikki Roos Petra Wallgren‐Björk 《Health information and libraries journal》2018,35(3):251-255
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
197.
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
198.
如何优化数字生态环境激发区域创业活跃度是亟待解决的重要管理问题。本文基于制度逻辑理论,采用必要条件分析(NCA)与模糊集定性比较分析(fsQCA)方法,以中国31个省区市为案例,检验了数字政府、数字基础、数字经济、数字能力与数字社会5个条件对区域创业活跃度的组态效应。研究结果表明:数字政府、数字基础、数字经济是区域创业活跃度的必要条件,其重要性程度依次为数字政府、数字基础与数字经济。存在“政府统筹—市场决定型“”政府赋能—市场调节型“”市场调节—社会助力型“”政府统筹—社会助力型”4类产生高创业活跃度的制度组态。存在3类产生非高创业活跃度的制度组态,呈现出以下2个特征:数字生态中各要素均表现不佳;在缺少政府统筹或赋能的情况下,即使市场发挥调节作用,也不能产生高区域创业活跃度。研究揭示了数字生态影响创业活跃度的多元路径,对优化地区数字生态环境,更好激发市场主体创业活力具有重要的实践启示。 相似文献
199.
王馨然 《上海教育评估研究》2024,13(2):67-71
通过对10所美国一流研究型大学的案例分析,发现其教师晋升评价坚持“不以数量定质量”的整体性原则,在评价标准上强调教师一流学者的身份定位、重视多元形式的创造性学术成果、关注教师潜力等能力发展,以及注重学术成果的影响和贡献。在过程保障上,构建了自下而上的校内审查制度和基于比较的同行评议制度,并以校内主体的分权制衡、严格的同行专家准入、完备的申诉、回避和保密制度保障了评价过程的规范性和专业性。这启示我国高校应发挥教师晋升评价的发展性功能,推动同行评议制度的理性回归,加强评价过程中的教师权益保障。 相似文献
200.
在家园共育视域下,研究发现家长参与的幼儿发展评价存在评价观念偏颇、评价参与表浅以及评价沟通不足等现实困境。以幼儿发展评价在智能技术驱动下所面临的智能化升级为契机,构筑智能化幼儿发展评价双向驱动模型。该模型围绕“一个中心、双向驱动、三个阶段以及多次迭代”的内容要旨,依托智能评价系统落实三阶段幼儿发展评价实施流程,具有权责分明、精准施测以及交互充分的应用优势,有助于发挥家园共育的协同育人价值。 相似文献