全文获取类型
收费全文 | 1975篇 |
免费 | 18篇 |
专业分类
1993篇 |
出版年
2020年 | 33篇 |
2019年 | 29篇 |
2018年 | 61篇 |
2017年 | 40篇 |
2016年 | 50篇 |
2015年 | 30篇 |
2014年 | 33篇 |
2013年 | 209篇 |
2012年 | 82篇 |
2011年 | 72篇 |
2010年 | 55篇 |
2009年 | 49篇 |
2008年 | 68篇 |
2007年 | 66篇 |
2006年 | 56篇 |
2005年 | 59篇 |
2004年 | 63篇 |
2003年 | 62篇 |
2002年 | 67篇 |
2001年 | 40篇 |
2000年 | 26篇 |
1999年 | 27篇 |
1998年 | 27篇 |
1997年 | 29篇 |
1996年 | 24篇 |
1995年 | 25篇 |
1994年 | 27篇 |
1993年 | 27篇 |
1992年 | 24篇 |
1991年 | 19篇 |
1990年 | 24篇 |
1989年 | 20篇 |
1988年 | 16篇 |
1986年 | 20篇 |
1985年 | 19篇 |
1984年 | 32篇 |
1983年 | 21篇 |
1982年 | 21篇 |
1981年 | 25篇 |
1980年 | 18篇 |
1979年 | 17篇 |
1978年 | 18篇 |
1977年 | 15篇 |
1976年 | 14篇 |
1975年 | 21篇 |
1974年 | 30篇 |
1973年 | 16篇 |
1969年 | 14篇 |
1967年 | 16篇 |
1966年 | 16篇 |
排序方式: 共有1993条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
995.
996.
997.
998.
Stephen Childs Ross Finnie Richard E. Mueller 《Journal of International Migration and Integration》2017,18(1):1-28
The children of Canadian immigrants from some source regions, Asia, Africa and China in particular, attend university at extraordinarily high rates. Most others participate at lower rates, but still compare favourably with non-immigrant Canadians. In this paper, the Youth in Transition Survey is used to analyse the role of various background factors on these outcomes, including parental education, family income, parental expectations, high school grades and PISA test scores. To some degree, the children of immigrants go to a university because they have higher levels of the background attributes associated with university attendance, parental education in particular. But by allowing these effects to vary by immigrant group, this research finds that the high immigrant university participation rates are largely driven by those possessing “unfavourable” characteristics (low levels of parental education in particular) attending university in spite of these apparent disadvantages. 相似文献
999.
1000.
Diane M. Sainato Phillip S. Strain Daniel Lefebvre Nancy Rapp 《Journal of applied behavior analysis》1987,20(3):285-291
We examined the effects of a peer-mediated versus an antecedent prompt condition on the rate of independent movement and appropriate behavior of handicapped preschool children during three classroom transition times. Using an alternating treatments design, results showed that each treatment condition yielded increases in target behaviors; however, the antecedent prompt condition was superior during all three transition settings. In addition, teacher prompts to these children were significantly reduced during the intervention conditions, indicating that the children were making these transitions more independently. 相似文献