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   18350篇
  免费   309篇
  国内免费   182篇
教育   12789篇
科学研究   2405篇
各国文化   13篇
体育   1166篇
综合类   1037篇
信息传播   1431篇
  2023年   71篇
  2022年   224篇
  2021年   432篇
  2020年   632篇
  2019年   449篇
  2018年   225篇
  2017年   204篇
  2016年   246篇
  2015年   676篇
  2014年   1643篇
  2013年   1433篇
  2012年   2028篇
  2011年   1783篇
  2010年   1143篇
  2009年   994篇
  2008年   1059篇
  2007年   1227篇
  2006年   1065篇
  2005年   997篇
  2004年   690篇
  2003年   592篇
  2002年   404篇
  2001年   307篇
  2000年   163篇
  1999年   58篇
  1998年   21篇
  1997年   25篇
  1996年   11篇
  1995年   8篇
  1994年   5篇
  1993年   6篇
  1992年   8篇
  1991年   4篇
  1990年   1篇
  1988年   2篇
  1979年   1篇
  1978年   1篇
  1957年   3篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
According to the United Nations Convention on the Rights of the Child, children have a right to have their views listened to, and studies have shown that doing so can improve their motivation and self‐esteem. Accordingly, this systematic literature review sought to investigate how the views of children with an autism spectrum disorder (ASD), who have difficulties with social communication, may be gathered. Searches of electronic databases yielded 20 studies which met the criteria for inclusion. Semi‐structured interviews (SSIs) were popular, but there is tentative evidence that these are better suited to older, or more academically able, participants. Some of the evidence suggests adaptations to make SSIs more accessible to young people with ASD. Initial evidence has also emerged regarding the suitability of focus groups and electronic diaries. More focused evaluation by researchers of the suitability of their chosen data‐gathering methods for participants with ASD would allow broader conclusions to be drawn.  相似文献   
2.
This systematic review assessed the current state of the literature on sexually exploited boys internationally. We aimed to describe what is known about sexual exploitation of boys, identify gaps in the literature, provide implications for practice, and make recommendations for future research. Multiple database searches were conducted using a combination of controlled vocabulary and keywords to capture child and adolescent sexual exploitation. Our search identified 11,099 unique references and excluded studies that did not include male participants less than 18 years old or disaggregate results by relevant age groups and/or by sex. This review identified 42 studies from 23 countries, providing evidence that sexual exploitation of boys is an issue in both high- and low-income countries. Seventeen articles had sexual exploitation as their primary variable of interest, the majority of which sampled boys who accessed services (i.e., shelters, health care, social, and justice services). Boys’ experiences of sexual exploitation varied in terms of venue, exploiters, and compensation. Compared to their non-sexually exploited peers, sexually exploited boys more commonly reported experiences of child abuse, substance use, conduct problems, and mental health problems such as anxiety, depression, and self-harm. Despite increasing evidence that boys are sexually exploited around the world, the current literature provides limited data about the antecedents, sequelae, and the specific features of sexual exploitation experiences among boys. Further research is needed to inform, policy, social services and health care delivery specific to the needs of sexually exploited boys.  相似文献   
3.
基于模糊综合评价法和熵权法评价2015年我国31个省份的光伏资源利用水平,分析区域的特征及差异,同时划分为四类开发区域、提出不同的发展方式。研究结果表明:(1)31个省份光伏资源利用评价值呈正偏态分布,北部及东部沿海城市资源利用水平较高,中部和内陆地区较低。(2)太阳能资源不会制约产业发展,社会经济状况、分布式光伏发展是造成区域差异的主要原因。(3)依据光伏资源利用及实际情况划分优化调整区、重点开发区、潜力开发区和有序发展区四类发展区域。  相似文献   
4.
【目的】 总结笔者所在期刊组织专题/专刊(以下简称“重点号”)的工作模式,为高校医学学报实现规模化组稿提供参考。【方法】 比较《山东大学学报(医学版)》2016—2017年刊发的7个重点号中的约稿及同卷期自由来稿的下载频次和被引频次,分析重点号的刊出效果。回顾重点号的组织过程,总结组稿模式,归纳要点,反思不足。【结果】 重点号约稿的篇均下载频次和被引频次分别是同卷期自由来稿的2.74倍和6.00倍,基本实现预期的约稿效果。《山东大学学报(医学版)》通过两年多的实践,建立了适合自身发展的重点号组稿模式,主编和编委的办刊热情得到了有效激发,组稿达到较大规模,办刊进入良性循环。【结论】 建立的重点号组稿模式可以明显提升期刊的学术影响力,具有较强的可操作性和可复制性;高校医学学报可以通过主动建立适合自身发展的组稿模式,突破办刊困境。  相似文献   
5.
Smart cities employ information and communication technologies to improve: the quality of life for its citizens, the local economy, transport, traffic management, environment, and interaction with government. Due to the relevance of smart cities (also referred using other related terms such as Digital City, Information City, Intelligent City, Knowledge-based City, Ubiquitous City, Wired City) to various stakeholders and the benefits and challenges associated with its implementation, the concept of smart cities has attracted significant attention from researchers within multiple fields, including information systems. This study provides a valuable synthesis of the relevant literature by analysing and discussing the key findings from existing research on issues related to smart cities from an Information Systems perspective. The research analysed and discussed in this study focuses on number of aspects of smart cities: smart mobility, smart living, smart environment, smart citizens, smart government, and smart architecture as well as related technologies and concepts. The discussion also focusses on the alignment of smart cities with the UN sustainable development goals. This comprehensive review offers critical insight to the key underlying research themes within smart cities, highlighting the limitations of current developments and potential future directions.  相似文献   
6.
Whilst peer observation of teaching is well established as a practice that can enhance teaching quality, the challenge to fully embed this practice in universities remains unresolved. This article analyses the perspectives of 18 university leaders (nine Australian and nine English) drawn from a range of school-based leaders to senior leaders of learning and teaching. Our study indicates that some of the challenges associated with leading such schemes can be mitigated through approaches to educational leadership that enact a respectful and collegiate ethos. This we suggest can support developmental academic engagement in peer observation for positive and lasting change.  相似文献   
7.
The term “cultural diversity” is extensively used in recent teacher education research, but its meaning appears to vary and therefore needs to be made visible. This article reviews the use and meaning making of the term cultural diversity. The analysis reveals three main patterns across the 67 studies reviewed: Cultural diversity is (1) undefined, (2) related to a set of other undefined terms and (3) used in binary oppositional discourses that produce a racialized Other. Drawing on critical Whiteness studies and critical discourse analysis, I argue that despite attempting to promote social justice, researchers are actors who produce a discursive ideology of White supremacy.  相似文献   
8.
基于新技术条件下汽车产业形态的变化趋势,分析汽车产业走向c2B模式的必然性。根据汽车产业c2B模式的发展过程特征,对其作初级、中级、高级3个不同阶段的划分,并分析该模式对汽车全生命周期各环节的影响;通过对比汽车企业c2B模式的理想状态与现实状况,总结汽车企业c2B模式的关键实现环节,并进一步归纳整车厂和零部件企业需要满足的条件。从汽车产业c2B模式与智能工厂相互交融、互为支撑的关系,分析面向智能制造进行c2B模式建设所需的硬件、软件工作;以典型整车企业为例,提出汽车企业面向智能制造进行c2B模式升级的实施策略。  相似文献   
9.
学界关于体育非遗的研究,多是武术、养生气功、传统游戏竞技方面的,对传统舞蹈类体育非遗的关注不够,从模式视角审视传统舞蹈类体育非遗传承实践和传承问题的研究更是少有。运用文献资料法、田野调查法、深度访谈法等,对摆手舞传承实践进行历时梳理和现时调查,提炼摆手舞的传承模式,分析传承模式变迁的表征及动因,从中归纳摆手舞的变迁机制,总结摆手舞的传承经验,审视摆手舞的传承问题,对整个传统舞蹈类体育非遗的未来传承提出建议。认为摆手舞传承实践中的9种传承样态可以提炼为民间主体主导传承、政府主导传承、社会组织主导传承3种传承模式,这些传承模式及其要素在相关文化生态因子的作用下处于永恒的变迁状态;各传承主导方对摆手舞的动态认同及传承模式的多样化是摆手舞传承至今的根本保证,摆手舞的传承问题正是由于各传承要素未能对文化生态因子的变化做出及时调适的结果,这要求摆手舞各传承要素不仅要适应文化生态变化,也要走向有机协同。未来,传统舞蹈类体育非遗应回归传承者的生产、生活之中,要融入全民健身之中,也要转向休闲娱乐;要明确传承主导方的权责;在传承中做到传承模式的多样性与保持体育非遗内涵的原真性相统一。  相似文献   
10.
创新驱动发展战略是我国全局发展的核心,正确理解创新驱动发展的内涵及监测评价指标,对全面推动创新驱动发展战略具有重要意义。本文多维度深入探讨创新驱动发展内涵,全面梳理创新驱动发展能力评价的研究进展,总结当前研究进展特点及存在问题,提出下一步开展相关研究的展望  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