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   321篇
  免费   5篇
教育   256篇
科学研究   17篇
各国文化   1篇
体育   27篇
文化理论   3篇
信息传播   22篇
  2023年   3篇
  2021年   4篇
  2020年   4篇
  2019年   6篇
  2018年   13篇
  2017年   11篇
  2016年   9篇
  2015年   8篇
  2014年   4篇
  2013年   53篇
  2012年   13篇
  2011年   6篇
  2010年   11篇
  2009年   7篇
  2008年   8篇
  2007年   12篇
  2006年   4篇
  2005年   10篇
  2004年   8篇
  2003年   7篇
  2002年   6篇
  2001年   4篇
  2000年   8篇
  1999年   7篇
  1997年   7篇
  1996年   4篇
  1995年   2篇
  1994年   3篇
  1992年   5篇
  1991年   3篇
  1990年   8篇
  1989年   2篇
  1988年   4篇
  1987年   2篇
  1986年   2篇
  1985年   8篇
  1984年   5篇
  1983年   2篇
  1982年   2篇
  1980年   3篇
  1979年   3篇
  1978年   2篇
  1975年   5篇
  1973年   5篇
  1972年   2篇
  1922年   1篇
  1921年   1篇
  1918年   5篇
  1917年   1篇
  1880年   1篇
排序方式: 共有326条查询结果,搜索用时 15 毫秒
31.
32.
33.
34.
35.
Parental involvement and participation, partnership with parents, and community‐focused development are important features of government initiatives such as the Sure Start project for children under four years of age and their families. A common feature of the rhetoric is ‘empowerment’ as a means of achieving this. This article describes the activity and development of the Parents Committee in one Sure Start programme and uses this to tease out different dimensions of empowerment. In particular, it highlights issues regarding developing empowerment and the dynamic tension between the growth of personal power and the changing symmetry of power relationships. A tentative model of the trajectory of developing empowerment is presented. This may raise challenges for professionals seeking to fulfill their professional role in a complex context and questions as to whether, or how, it might be possible to better prepare professionals for this dimension of their work.  相似文献   
36.
Cells and cell-free solutions of the culture filtrate of the bacterial symbiont, Xenorhabdus nematophila taken from the entomopathogenic nematode Steinernema carpocapsae in aqueous broth suspensions were lethal to larvae of the diamondback moth Plutella xylostella. Their application on leaves of Chinese cabbage indicated that the cells can penetrate into the insects in the absence of the nematode vector. Cell-free solutions containing metabolites were also proved as effective as bacterial cells suspension. The application of aqueous suspensions of cells of X. nematophila or solutions containing its toxic metabolites to the leaves represents a possible new strategy for controlling insect pests on foliage.  相似文献   
37.
38.
39.
ABSTRACT

Control of relative humidity (RH) for collections care is challenging in U.K. historic houses because they are often highly ventilated with poor heat retention, a porous building fabric and naturally tend to high (60–80%) RH if unheated. The significance of the building means that large-scale modifications and installation of air handling systems may be unfeasible and undesirable for the conservation of the building. In the late 1980s the National Trust, for English, Wales and Northern Ireland, investigated conservation heating as an RH control method that works with the natural environment of historic buildings, mimicking historic heating and requiring only modification of existing heating services or a light touch installation of new heating systems. The National Trust adopted conservation heating as its preferred method for environmental control in historic buildings from the 1990s. This method was presented at the IIC 1994 Ottawa congress on preventive conservation. Conservation heating has since been adopted by many historic house management organisations, particularly across north-west Europe, where it is well suited to the climate. This paper reviews conservation heating developments implemented by the National Trust since 1994, in response to a changing external context, new knowledge and developments in operational practice.  相似文献   
40.
The experiences of pupils with Special Educational Needs (SEN) and their parents at pre-transition from primary to post-primary school have received little attention in the literature. The current study investigated these experiences using a mixed methods approach within the Irish educational system. Thirty-two pupils with SEN and 42 parents of pupils with SEN participated in focus groups, and also completed a questionnaire which qualitatively complemented the parental focus groups. Emergent themes for pupils included: things I will miss; fitting in and performing as well as others; laying the groundwork: getting to know new people; and experiencing and talking about ‘going to the new school’. Emergent themes for parents included: losing ground?; information is critical: ‘I’m not asking for the moon, but a bit more information’; I’d like help but I don’t want to make trouble for my child; and challenge and support. Critical issues emerging from the data concerning pre-transition experiences for both pupils and parents are discussed.  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