全文获取类型
收费全文 | 1750篇 |
免费 | 20篇 |
国内免费 | 2篇 |
专业分类
教育 | 896篇 |
科学研究 | 605篇 |
各国文化 | 14篇 |
体育 | 104篇 |
文化理论 | 21篇 |
信息传播 | 132篇 |
出版年
2019年 | 31篇 |
2018年 | 44篇 |
2017年 | 39篇 |
2016年 | 34篇 |
2015年 | 17篇 |
2014年 | 31篇 |
2013年 | 354篇 |
2012年 | 32篇 |
2011年 | 34篇 |
2010年 | 20篇 |
2009年 | 23篇 |
2008年 | 30篇 |
2007年 | 20篇 |
2006年 | 18篇 |
2005年 | 31篇 |
2004年 | 22篇 |
2003年 | 28篇 |
2002年 | 18篇 |
2001年 | 15篇 |
2000年 | 18篇 |
1998年 | 13篇 |
1997年 | 17篇 |
1996年 | 11篇 |
1995年 | 11篇 |
1994年 | 12篇 |
1993年 | 17篇 |
1990年 | 20篇 |
1987年 | 11篇 |
1986年 | 11篇 |
1983年 | 12篇 |
1982年 | 12篇 |
1981年 | 16篇 |
1979年 | 12篇 |
1978年 | 19篇 |
1977年 | 13篇 |
1948年 | 13篇 |
1930年 | 20篇 |
1929年 | 28篇 |
1928年 | 33篇 |
1927年 | 32篇 |
1926年 | 30篇 |
1925年 | 52篇 |
1924年 | 33篇 |
1923年 | 34篇 |
1922年 | 11篇 |
1921年 | 15篇 |
1920年 | 28篇 |
1919年 | 13篇 |
1918年 | 12篇 |
1868年 | 15篇 |
排序方式: 共有1772条查询结果,搜索用时 46 毫秒
1.
2.
3.
4.
As a part of efforts to evaluate and monitor the increasing public investment in early childhood education, teachers are being asked to assess children's school readiness. In this study, preschool teachers and kindergarten teachers rated children's skills in three areas (kindergarten readiness, academic skills, and communication skills), and these ratings were compared with direct assessments of the children's skills. Ratings by both groups of teachers tended to be more highly related to basic skills, such as counting and number naming, than to abilities such as solving applied problems and using expressive and receptive vocabulary. Preschool teachers' ratings had a lower association with children's observed skills and abilities than kindergarten teachers' ratings. Ratings of children attending Head Start were systematically inflated, but this relationship was mediated to a significant extent by the teachers' levels of education. More educated teachers rated children in a manner consistent with the children's directly assessed skills. Implications of these findings for informing future efforts to assess school readiness by using teacher ratings are discussed. 相似文献
5.
Jon Bekken 《Publishing Research Quarterly》1997,13(4):3-26
While bookstores play the vital role in book distribution, little attention has been paid to concentration and conglomerate
ownership in the retail book trade. In 1958, one-store book firms accounted for nearly 80 percent of book sales; by 1982 that
figure had fallen to 26 percent even though single-store retailers continue to account for a majority of all bookstore outlets.
Today the chains control at least 54 percent of bookstore sales. Buoyed by discriminatory discounts and publisher-subsidized
advertising campaigns, the chains’ dramatic growth seems likely to continue despite the fact that they are less profitable
than independent booksellers. The chains’ marketing orientation fits well with changes in the broader publishing industry,
as publishers seek to rationalize operations in order to improve the bottom line. As books become just another commodity,
sold through increasingly centralized and monopolized channels, access for alternative and minority voices is being for-closed. 相似文献
6.
Entrepreneurial scientists and entrepreneurial universities in American academic science 总被引:2,自引:0,他引:2
Etzkowitz H 《Minerva》1983,21(2-3):198-233
7.
8.
9.
10.
Jon Bruschke Andrew Gonis III Sarah A. Hill Pam Fiber-Ostrow William Loges 《Communication monographs》2016,83(4):521-534
Prior research on pretrial publicity has produced mixed results and a roughly equal number of studies show an effect, show no effect, or show mixed results. We explored the effects of (a) homogenous vs. heterogeneous exposure (whether deliberating jurors were all exposed to the same publicity or not) and (b) pre-deliberation queries as potential contributors to mixed results. We found an effect for positive but not negative publicity on conviction rates but not evidence ratings. Exposure heterogeneity appears to explain these differences and pre-deliberation queries did appear to play some role in the obtained outcomes. Overall these findings do not replicate a robust publicity effect and future research should consider how homogeneous exposure and pre-deliberation opinion queries influence results. 相似文献