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   2205篇
  免费   44篇
  国内免费   1篇
教育   1429篇
科学研究   143篇
各国文化   53篇
体育   274篇
综合类   1篇
文化理论   15篇
信息传播   335篇
  2024年   4篇
  2023年   9篇
  2022年   16篇
  2021年   35篇
  2020年   61篇
  2019年   117篇
  2018年   126篇
  2017年   136篇
  2016年   97篇
  2015年   68篇
  2014年   90篇
  2013年   472篇
  2012年   72篇
  2011年   67篇
  2010年   66篇
  2009年   69篇
  2008年   73篇
  2007年   67篇
  2006年   57篇
  2005年   52篇
  2004年   43篇
  2003年   44篇
  2002年   33篇
  2001年   31篇
  2000年   23篇
  1999年   23篇
  1998年   34篇
  1997年   19篇
  1996年   13篇
  1995年   19篇
  1994年   17篇
  1993年   18篇
  1992年   13篇
  1991年   12篇
  1990年   19篇
  1989年   18篇
  1988年   5篇
  1987年   8篇
  1986年   4篇
  1985年   5篇
  1984年   11篇
  1983年   11篇
  1982年   5篇
  1981年   7篇
  1980年   8篇
  1977年   5篇
  1974年   5篇
  1968年   3篇
  1948年   3篇
  1852年   3篇
排序方式: 共有2250条查询结果,搜索用时 15 毫秒
171.
172.
173.
174.
This paper examines the vocational education aspects of the new National Policy on Education (NPE) in Nigeria. The NPE advocates a 6+3+3+4 system which means that the educational system would be divided into six years of primary school, three years in a junior secondary school, three years in either a senior secondary school, a technical or teacher training college and four years in a university. The junior secondary school will be terminal for those who do not have the aptitude for the more academic subjects of senior secondary school and the emphasis at this stage would be both pre-vocational and academic. While it is generally thought that the vocational provision outline in the NPE would help to lay the foundation for a modern technological society, it is clearly an over-simplistic appraisal of the Nigerian socio-economic background. First, the selection for the trainees in vocational education is not usually from an open population in terms of relevant characteristics but from a closed population, those who had already proved to be of lower than average ability, by failing to gain entry to the ‘academic’ senior secondary school. The social implication of such a situation is that trainees in vocational education are caught up in an ‘ecological niche’ in society as fishermen, miners and other direct producers. Secondly, when the elite, the top federal government officials, advocate vocational expansion, it is often for other peoples' children rather than their own. Furthermore, as could be seen from the results of the Udoji report set by the government to harmonize civil service salaries, those who had academic qualifications from schooling rather than vocational qualifications were more favoured. Thus this paper calls for a rethink of the NPE, bearing in mind the realities of the Nigerian educational system and the job market.  相似文献   
175.
During the course of the Special Unit's operation it became apparent that in many cases there was a demonstrable need for assessment; for a period of involvement with the family by one worker who could not only explore the background information, from parents and agencies alike, but also engage the whole family in an interventive schedule which explores their positive development by the use of a number of treatment modalities, the effectiveness of which could be evaluated in operation. Time-tabled case conferences on a weekly basis with a standing membership at the core reflecting the membership of the policy-making Area Review Committee, supplemented by other workers also involved in each case, provide the regular and consistent forum from which assessment cases are referred and for which assessment reports are prepared. The assessment process is the beginning of a long-term interventive schedule in which the clients and workers both participate. The system is, in essence and practise, a simple one but its effects have been felt not only in terms of ongoing casework with families but also at the level of policy-making in reappraisal of our traditional agency attitudes to child abuse.  相似文献   
176.
Book reviews     
  相似文献   
177.
178.
AIMS/OBJECTIVES: To undertake an information-needs analysis of operating theatre staff in order to inform the development of a specialist library of the National Electronic Library of Health (NeLH). SETTING: Three hospitals in an NHS Trust in a rural county in the north of England. METHODS: In-depth interviews, during which staff were questioned in regard to their job roles and information needs, information-seeking behaviour, access to computers, use and perceptions of the NeLH, and what they would like from a specialist library. RESULTS: Information needs were found to concern direct care, professional and academic development, medical devices knowledge and administration. Currency and speed of delivery were the key information requirements. Poor communication appeared to be a major problem for many staff and inhibited efficient information exchange. When using the Web, both clinical and non-clinical staff searched in a similar fashion to health consumers generally, despite their need for highly specialist information. Most respondents reacted warmly to the idea of the proposed National Electronic Library for Theatre Staff (NeLTS) and made several practical suggestions for suitable material. However, access was problematic for nurses and might prove to be an obstacle to take-up of the Specialist Library. CONCLUSIONS: Communication difficulties, the fragmentation of data in the field and the consequent difficulties of finding information point to the need for an NeLTS. However, for this library to embrace and succeed with all the various groups that constitute the operating theatre staff, issues of access and digital literacy need to be addressed.  相似文献   
179.
180.
Hogan AJ 《Endeavour》2012,36(2):77-84
What does it look like to be the carrier of a genetic disease? Carrier status may be determined through the visual analysis of both genotypic and phenotypic evidence. Over the past 70 years, clinical geneticists have depended upon multiple strategies for identifying disease carriers within a family. This has included pedigree analysis, which was based upon clinical observations of individual family members and, in recent decades, cytogenetic and molecular methods. Newer techniques have offered novel opportunities to actually see the suspected etiological markers of certain genetic diseases, such as Fragile X syndrome. The visualization of these markers has both clarified and confused previously observed inheritance patterns, in some cases leading to the development of newly distinct diagnostic categories. As a result, what it means to be affected by, or the carrier of, a genetic disease has continuously evolved.  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