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   15359篇
  免费   174篇
  国内免费   24篇
教育   10734篇
科学研究   1408篇
各国文化   190篇
体育   1470篇
综合类   10篇
文化理论   203篇
信息传播   1542篇
  2021年   140篇
  2020年   273篇
  2019年   374篇
  2018年   459篇
  2017年   505篇
  2016年   454篇
  2015年   298篇
  2014年   401篇
  2013年   2952篇
  2012年   375篇
  2011年   390篇
  2010年   323篇
  2009年   303篇
  2008年   350篇
  2007年   366篇
  2006年   306篇
  2005年   310篇
  2004年   278篇
  2003年   305篇
  2002年   264篇
  2001年   263篇
  2000年   263篇
  1999年   219篇
  1998年   134篇
  1997年   157篇
  1996年   195篇
  1995年   136篇
  1994年   168篇
  1993年   150篇
  1992年   227篇
  1991年   204篇
  1990年   199篇
  1989年   185篇
  1988年   171篇
  1987年   155篇
  1986年   191篇
  1985年   194篇
  1984年   163篇
  1983年   184篇
  1982年   157篇
  1981年   143篇
  1980年   130篇
  1979年   204篇
  1978年   154篇
  1977年   136篇
  1976年   128篇
  1975年   97篇
  1974年   101篇
  1972年   78篇
  1971年   78篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
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   
32.
33.
34.
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   
35.
36.
37.
The first natural history collections opened to the public were inspired by a sense of curiosity and wonder about the products of nature. They were ‘cabinets of curiosities’ that offered a first-hand interaction between owner and visitors. Nowadays, these two facets of the museum experience—dialogue and wonder—have been lost, in part, due to the information overload coming via the media and the impersonal nature of the museum visit. This paper offers some reflections on the evolution of the museum visit, suggests some ways to rediscover this ‘sense of wonder’ and provides ideas on how to promote two-way communication with museum visitors. Two examples of exhibitions are offered as illustrations of the points discussed.  相似文献   
38.
Museums are not usually seen to be agents of change. If they are to serve as important mechanisms for empowering local communities to define, recognize, and develop their own indigenous heritages, they should first consider a potential contradiction contained within this initiative: museums specialize in the representation of other peoples, while people have the sovereign right to represent themselves. Left unresolved, this contradiction could produce counterfeits of good intentions. The introduction of professionalized cultural management may mitigate the responsibilities of the citizenry to actively participate in the production and preservation of their own heritage.  相似文献   
39.
Editorial     
This issue of the Journal contains three interesting articlesabout central aspects of public opinion research, as well asan equal number of research notes that reflect the range oftopics that interest all public opinion researchers. Toshio Takeshita takes a turn at reconceptualizing agenda-settingstudies, using a taxonomy  相似文献   
40.
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