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   14659篇
  免费   209篇
  国内免费   9篇
教育   10739篇
科学研究   1264篇
各国文化   103篇
体育   1182篇
综合类   7篇
文化理论   93篇
信息传播   1489篇
  2021年   118篇
  2020年   179篇
  2019年   285篇
  2018年   393篇
  2017年   405篇
  2016年   379篇
  2015年   225篇
  2014年   323篇
  2013年   2820篇
  2012年   318篇
  2011年   397篇
  2010年   252篇
  2009年   247篇
  2008年   349篇
  2007年   260篇
  2006年   321篇
  2005年   220篇
  2004年   207篇
  2003年   190篇
  2002年   232篇
  2001年   332篇
  2000年   301篇
  1999年   269篇
  1998年   137篇
  1997年   166篇
  1996年   181篇
  1995年   183篇
  1994年   153篇
  1993年   170篇
  1992年   241篇
  1991年   215篇
  1990年   212篇
  1989年   248篇
  1988年   230篇
  1987年   202篇
  1986年   199篇
  1985年   210篇
  1984年   184篇
  1983年   214篇
  1982年   151篇
  1981年   145篇
  1980年   139篇
  1979年   217篇
  1978年   166篇
  1977年   159篇
  1976年   138篇
  1975年   121篇
  1974年   112篇
  1973年   123篇
  1971年   95篇
排序方式: 共有10000条查询结果,搜索用时 18 毫秒
1.
Research in Higher Education - State financial aid grant programs are commonly categorized as either need-based, merit-based, or both, but their initial eligibility requirements include many more...  相似文献   
2.
3.
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   
4.
5.
6.
7.
8.
9.
Duchenne Muscular Dystrophy (DMD) is a neurogenetic developmental disorder that presents with progressive muscular weakness. It is caused by a mutation in a gene that results in the absence of specific products that normally localize to muscle cells and the central nervous system (CNS). The majority of affected individuals have IQs within the normal range, generally with lower verbal than performance IQ scores. Prior work has demonstrated selective deficits on tests of verbal span and immediate memory. For the current study, 26 boys with DMD (and normal intellectual function) and their unaffected siblings were evaluated. Paired comparisons demonstrated that the children with DMD had significantly poorer academic achievement scores than their siblings, even though their vocabulary levels and home and educational environments were comparable. Children with DMD also had more behavioral concerns, physical disabilities, and poorer verbal memory spans. Linear regression indicated that behavioral concerns, executive function, and physical disability did not contribute substantially to academic performance, whereas performance on verbal span did. DMD presents with a selective developmental aberration in verbal span that has wide‐ranging consequences on learning skills.  相似文献   
10.
本文要点: ◆遗传型是机体全部遗传基因的总和,代表了个体的遗传潜力.在决定个体的解剖、生化、生理、行为等特性或遗传表型(如褐色的眼睛、75kg的体重、50 ml/kg/min的最大摄氧量等)上起主导作用.  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