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   17703篇
  免费   90篇
  国内免费   5篇
教育   13056篇
科学研究   1934篇
各国文化   51篇
体育   919篇
文化理论   409篇
信息传播   1429篇
  2022年   39篇
  2021年   63篇
  2020年   103篇
  2019年   160篇
  2018年   2326篇
  2017年   2247篇
  2016年   1737篇
  2015年   223篇
  2014年   273篇
  2013年   1187篇
  2012年   369篇
  2011年   841篇
  2010年   955篇
  2009年   550篇
  2008年   777篇
  2007年   1276篇
  2006年   176篇
  2005年   500篇
  2004年   532篇
  2003年   432篇
  2002年   216篇
  2001年   126篇
  2000年   159篇
  1999年   129篇
  1998年   57篇
  1997年   63篇
  1996年   68篇
  1995年   60篇
  1994年   63篇
  1993年   54篇
  1992年   115篇
  1991年   101篇
  1990年   86篇
  1989年   116篇
  1988年   78篇
  1987年   70篇
  1986年   76篇
  1985年   94篇
  1984年   69篇
  1983年   70篇
  1982年   71篇
  1981年   52篇
  1980年   59篇
  1979年   67篇
  1978年   69篇
  1977年   51篇
  1976年   57篇
  1974年   40篇
  1973年   40篇
  1969年   33篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
David Kaldewey 《Minerva》2018,56(2):161-182
This article analyzes the concept of “grand challenges” as part of a shift in how scientists and policymakers frame and communicate their respective agendas. The history of the grand challenges discourse helps to understand how identity work in science and science policy has been transformed in recent decades. Furthermore, the question is raised whether this discourse is only an indicator, or also a factor in this transformation. Building on conceptual history and historical semantics, the two parts of the article reconstruct two discursive shifts. First, the observation that in scientific communication references to “problems” are increasingly substituted by references to “challenges” indicates a broader cultural trend of how attitudes towards what is problematic have shifted in the last decades. Second, as the grand challenges discourse is rooted in the sphere of sports and competition, it introduces a specific new set of societal values and practices into the spheres of science and technology. The article concludes that this process can be characterized as the sportification of science, which contributes to self-mobilization and, ultimately, to self-optimization of the participating scientists, engineers, and policymakers.  相似文献   
3.
4.
Letters     
  相似文献   
5.
6.
7.
8.
9.
Learners who enrol in massive open online courses (MOOCs) have different backgrounds and tend to have different motivations than learners in traditional courses. Based on value-expectancy theory, an instrument was developed to measure motivation for enrolling in a programming MOOC. A study with 1229 adult participants in Estonian-language programming course “About Programming” was conducted to validate the instrument. Results of confirmatory factor analysis validated the 7-factor scale named factors influencing enrolment in MOOC (FIEM). FIEM comprises three factors of expectancies, three factors of values and one factor of social influence. The highest and lowest rated motivational factors influencing enrolment in programming MOOC are discussed in the paper. Interest in and expectations for the course, personal suitability of distance learning and suitability for family and work are the highest-rated motivational factors for those who enrol in MOOC. Usefulness related to own children, social influence and usefulness to related to certification were the lowest rated. The results of this study can be useful for designers of programming MOOCs and the developed scale might be used in future studies.  相似文献   
10.
This article describes the Engineering Professors' Conference (EPC) approach to quality assurance for Higher Education Institutions, which is currently the only formalized alternative to British Standard 5750 'Quality Systems'. The EPC approach is based on principles of quality assurance and Total Quality Management which have been developed in industry. These ideas are briefly outlined, and an opinion expressed on the interpretation and application of BSS7S0 for HE. The EPC model is explained, illustrated with example elements taken from the EPC Specification and Guidelines for Quality Assurance in Higher Education. A top-down approach to the development of an institutional quality system is described, based on a quality policy statement. Areas of activity which have an important impact on the quality of education are identified, emphasising the quality assurance requirements of academic departments. Supporting and administrative quality system requirements are also described, as these also play an important role in the quality of education. Formal quality procedures and documentation in key areas are proposed.  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