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   10082篇
  免费   127篇
  国内免费   36篇
教育   6903篇
科学研究   1092篇
各国文化   91篇
体育   1068篇
综合类   55篇
文化理论   99篇
信息传播   937篇
  2021年   91篇
  2020年   141篇
  2019年   199篇
  2018年   259篇
  2017年   272篇
  2016年   237篇
  2015年   183篇
  2014年   264篇
  2013年   1768篇
  2012年   264篇
  2011年   262篇
  2010年   221篇
  2009年   222篇
  2008年   226篇
  2007年   253篇
  2006年   211篇
  2005年   194篇
  2004年   180篇
  2003年   193篇
  2002年   159篇
  2001年   171篇
  2000年   163篇
  1999年   157篇
  1998年   72篇
  1997年   75篇
  1996年   109篇
  1995年   77篇
  1994年   97篇
  1993年   89篇
  1992年   153篇
  1991年   146篇
  1990年   139篇
  1989年   138篇
  1988年   114篇
  1987年   116篇
  1986年   138篇
  1985年   136篇
  1984年   107篇
  1983年   131篇
  1982年   110篇
  1981年   104篇
  1980年   94篇
  1979年   165篇
  1978年   110篇
  1977年   108篇
  1976年   104篇
  1975年   79篇
  1974年   89篇
  1972年   70篇
  1971年   68篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
41.
42.
THE VIRTUES     
  相似文献   
43.
44.
45.
The present study examined three hypotheses regarding the consequences of early brain damage for academic achievement: First, early brain insults will have a negative impact on achievement, even in children with normal intelligence. Second, underachievement in these children will be at least partially independent of IQ (i.e., not fully accounted for by a lowering of IQ within the average range). Third, normally intelligent children with histories of brain insult will also manifest selective cognitive dysfunctions. To test these hypotheses, we compared two groups of children who had recovered from Haemophilus influenzae type b meningitis. The "complicated" group consisted of children who, as a consequence of having sustained neurologic complications during their illness, were more likely to have had brain insults. Children in the "uncomplicated" group did not have complications with their illness and were regarded as having escaped significant central nervous system (CNS) pathology. Only children with normal hearing and a prorated Full Scale IQ of at least 80 (WISC-R) were considered. Group differences on the Wide Range Achievement Test-Revised were consistent with the first two hypotheses. Although the two groups had similar Verbal IQs, the complicated group also had a lower mean Performance IQ and performed less well on perceptually demanding neuropsychological tasks. Findings suggest that learning disabilities may have selective, brain-related cognitive antecedents; but they challenge the practice of using IQ criteria for clinical diagnosis.  相似文献   
46.
47.
The literature of medical librarianship of Nigeria is reviewed. The staff structure of Nigerian univeristy libraries and, in particular, of the medical libraries attached to them is restrictive, unprogressive, and unconducive to the development of medical librarianship in Nigeria. These medical libraries should cease to be administered and regarded as just unavoidable appendages of the main university libraries. They should be independent, full-fledged libraries of their own, recognixed as full academic departments of their respective colleges or faculties, with their heads being in no way inferior in status to other heads of academic departments.The granting of faculty status to Nigerian unviersity librarians should go the whole way and let the principle of multiple professorships be applied to the staff structure of unviersity libraries. Efforts are being made to effect bibliographic organization of Nigerian medical literature. A national library of medicine for Nigeria, however, humble its beginning, should be established.  相似文献   
48.
49.
50.
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