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   2411篇
  免费   61篇
  国内免费   67篇
教育   1708篇
科学研究   445篇
各国文化   3篇
体育   67篇
综合类   72篇
信息传播   244篇
  2024年   2篇
  2023年   15篇
  2022年   47篇
  2021年   72篇
  2020年   103篇
  2019年   79篇
  2018年   71篇
  2017年   54篇
  2016年   86篇
  2015年   85篇
  2014年   159篇
  2013年   237篇
  2012年   198篇
  2011年   202篇
  2010年   147篇
  2009年   139篇
  2008年   160篇
  2007年   164篇
  2006年   142篇
  2005年   105篇
  2004年   90篇
  2003年   56篇
  2002年   37篇
  2001年   45篇
  2000年   21篇
  1999年   1篇
  1998年   5篇
  1997年   3篇
  1996年   3篇
  1995年   1篇
  1994年   4篇
  1993年   3篇
  1992年   1篇
  1991年   1篇
  1988年   1篇
排序方式: 共有2539条查询结果,搜索用时 15 毫秒
1.
[目的/意义]随着知识服务平台的发展,如何通过评估改善知识服务平台的功能和设计以更好地服务于用户成为重要的问题。本文旨在探讨知识服务平台的评估要素和评估标准,为知识服务平台的评估实践提供理论指导。[方法/过程]从信息检索系统评估出发,回顾和梳理信息检索系统评估、数字图书馆评估的相关研究和理论模型、数字图书馆的评估要素和标准。[结果/结论]基于总结和归纳以往信息服务类系统的评估要素,结合知识服务平台的特征,阐述知识服务平台评估的要素和评估标准。  相似文献   
2.
Beginning and expert supervisors’ cognitions and cognitive structures were compared via concept mapping, a mixed methods design. Both beginning and expert supervisors reported a variety of cognitions representing developmental characteristics in 3 areas: assessment of supervisees, conceptualization and management of supervision, and supervisory relationship.  相似文献   
3.
In this ITEMS module, we introduce the generalized deterministic inputs, noisy “and” gate (G‐DINA) model, which is a general framework for specifying, estimating, and evaluating a wide variety of cognitive diagnosis models. The module contains a nontechnical introduction to diagnostic measurement, an introductory overview of the G‐DINA model, as well as common special cases, and a review of model‐data fit evaluation practices within this framework. We use the flexible GDINA R package, which is available for free within the R environment and provides a user‐friendly graphical interface in addition to the code‐driven layer. The digital module also contains videos of worked examples, solutions to data activity questions, curated resources, a glossary, and quizzes with diagnostic feedback.  相似文献   
4.
随着社会进步与教育环境诸多变化,中小学体育运动会风险管理亟需实现积极安全态度与现代技术防范并举。基于新时期中小学体育运动会风险评估是含有多重判断的复杂体系,该文引入层次全息建模HHM风险识别分析工具,构建包括运动会本体、组织管理、人员素质、场地设施、环境5大类别24个层次全息子系统的适用中小学体育运动会风险识别的全息模型,重点阐释了"组织管理——人员"风险识别的主场景,并通过HHM全息框架的指标转换、推演与扩展,统计中小学体育运动会风险清单全息模型配对的发生数目,运用层次分析法和帕累托分析法进行量化和评级,为中小学体育运动会风险量化评估提供参考依据。  相似文献   
5.
Massive Online Open Courses (MOOCs) provide opportunities to learn a vast range of subjects. Because MOOCs are open to anyone with computer access and rarely have prerequisite requirements, the range of student backgrounds can be far more varied than in conventional classroom-based courses. Prior studies have shown that misconceptions have a huge impact on students' learning performance; however, no study has empirically examined the relationship between misconceptions and learning persistence. This study of 12,913 MOOC-takers examines how students' misconceptions about the upcoming course material affect course completion. Using a survival analysis approach, we found that, controlling for the score in a pre-course test, students holding more misconceptions had a higher dropout rate at the start of the course, an effect that diminished over time. Other student variables were found to have a positive impact on survival that persisted throughout the entire course: U.S. location, higher age, an intention to complete, better English skills, prior familiarity with the subject, motivation to earn a certificate, and score and time spent on the previous problem set (homework). By contrast, student gender, education level, number of previous MOOCs completed, and motivation to participate in online discussion forums did not affect survival.  相似文献   
6.
This article presents a pedagogical approach for disrupting epistemic injustice. In it, A. C. Nikolaidis first demonstrates that different forms of epistemic injustice — testimonial, hermeneutical, and contributory — are the result of limited or distorted conceptual resources and then argues that concept proliferation can be a promising educational means for overcoming such limitations and distortions. Concept proliferation involves a combination of increasing exposure to diverse, especially marginalized, concepts and providing students with necessary critical tools for questioning harmful and erroneous concepts. Concept proliferation is beneficial for both individual students and society at large. It liberates students from the confines of harmful concepts that limit their self-understanding, but also provides them with skills necessary to challenge hegemonic concepts that distort collective (social) understanding and contribute to epistemic and systemic injustice.  相似文献   
7.
The development of artificial intelligence (AI) technology expands the boundary of business practice, inducing the emergence and application of business intelligence (BI) that has promoted the transformation of information techniques to optimize business decision and operation. However, there is a lack of theoretical consensus and measurement of the technology embedded in BI at present. This study exploratively develops the Sense-Transform-Drive (STD) conceptual model of BI based on dynamic capabilities theory and organizational evolutionary theory to explain the core BI capabilities. By using factoring analysis and structural equation modeling analysis, we extract the latent constructs and empirically verify the validity of the STD model and further examine the correlation and mode of interaction of the three core BI capabilities and the impact of BI application on firm performance in the real economy with a sample contextual to Chinese business practices. The study results show that there are direct and high-intensity cumulative positive effects among the structural components of the STD conceptual model and BI-related dynamic capabilities can enhance operating efficiency and firm performance.  相似文献   
8.
巴黎气候峰会协议的达成必将形成更高的拥有法律约束力的多边减排手段,碳捕获与储存技术利用在全球气候治理中率先得到发展,其研发及商业化也成为主流趋势。我国面对减排压力,已经和亚行在碳捕获技术上合作,但缺少相关法律监管的制度、法规作为支撑,可以借鉴国外较为成熟的法律监管机制,分别从核查许可、风险应急、权责分配、信息披露等方面建立起市场主体监管与技术风险监管的"二维监管框架"和耦合的法律制度。  相似文献   
9.
新兴市场中的中小企业的动态能力研究   总被引:3,自引:0,他引:3  
本文提出了新兴市场中的中小企业的动态能力模型,其中对动态能力流程进行了专门的阐述,这些流程包括选择、配置和学习;同时,结合新兴市场和中小企业的特点,本文提出机会池和能力成长过程的概念。这些研究为更好地理解新兴市场中的中小企业的战略特性提供了一个工具,并且也为将来的进一步研究提供了一个基础框架。  相似文献   
10.
联盟能力的基本架构及其提升联盟绩效的机理研究   总被引:4,自引:0,他引:4  
针对联盟能力研究单一性、片面性和静态性的现状,在对联盟能力理论基础——动态能力观进行进一步完善和拓展的基础上,提出了基于整合动态能力观(IDCV)的联盟能力基本构架及其提升企业联盟绩效的内在机理,即联盟能力是由运营能力、提升能力和协控能力构成的能力整合系统,联盟能力提升联盟绩效的源泉来自于运营能力、提升能力和协控能力三种能力之间相互依赖、相互作用和相互促进的协同关系。  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