全文获取类型
收费全文 | 1835篇 |
免费 | 53篇 |
国内免费 | 2篇 |
专业分类
教育 | 1412篇 |
科学研究 | 132篇 |
各国文化 | 33篇 |
体育 | 134篇 |
文化理论 | 23篇 |
信息传播 | 156篇 |
出版年
2022年 | 12篇 |
2021年 | 16篇 |
2020年 | 32篇 |
2019年 | 45篇 |
2018年 | 62篇 |
2017年 | 73篇 |
2016年 | 49篇 |
2015年 | 46篇 |
2014年 | 45篇 |
2013年 | 415篇 |
2012年 | 50篇 |
2011年 | 55篇 |
2010年 | 36篇 |
2009年 | 45篇 |
2008年 | 46篇 |
2007年 | 42篇 |
2006年 | 40篇 |
2005年 | 48篇 |
2004年 | 37篇 |
2003年 | 39篇 |
2002年 | 55篇 |
2001年 | 29篇 |
2000年 | 30篇 |
1999年 | 38篇 |
1998年 | 24篇 |
1997年 | 24篇 |
1996年 | 21篇 |
1995年 | 18篇 |
1994年 | 16篇 |
1993年 | 20篇 |
1992年 | 19篇 |
1991年 | 21篇 |
1990年 | 26篇 |
1989年 | 28篇 |
1988年 | 15篇 |
1987年 | 18篇 |
1986年 | 14篇 |
1985年 | 13篇 |
1984年 | 14篇 |
1983年 | 18篇 |
1982年 | 19篇 |
1981年 | 15篇 |
1980年 | 11篇 |
1979年 | 16篇 |
1978年 | 17篇 |
1977年 | 7篇 |
1976年 | 14篇 |
1975年 | 8篇 |
1973年 | 10篇 |
1970年 | 7篇 |
排序方式: 共有1890条查询结果,搜索用时 15 毫秒
61.
62.
63.
Idenburg Philip J. 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1965,11(4):434-452
International Review of Education - A realistic consideration of the part that statistics can play in the study of comparative education must regard as the first desiderata the development of... 相似文献
64.
From the standpoint of circuit synthesis as well as for a fundamental comprehension of circuit behavior, it is desirable to be able to visualize the response of a circuit over an extended frequency range by means of a geometrical construction. Mathematically, the response of a circuit can be expressed with the La Place transform theory as a function of the complex frequency variable, p = α + jωw, in which a is the decrement and ω is the “real” angular frequency. Physically, the nature of the real-frequency response is usually not discernible by casual inspection of the mathematical function. This paper develops a means of visualizing this frequency response readily through the construction of a vector diagram from the response function. 相似文献
65.
66.
67.
68.
69.
Within‐High‐School Versus Across‐High‐School Scaling of Admissions Assessments: Implications for Validity and Diversity Effects
下载免费PDF全文
![点击此处可从《Educational Measurement》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Jack W. Kostal Paul R. Sackett Nathan R. Kuncel Philip T. Walmsley Melissa S. Stemig 《Educational Measurement》2017,36(1):39-46
Previous research has established that SAT scores and high school grade point average (HSGPA) differ in their predictive power and in the size of mean differences across racial/ethnic groups. However, the SAT is scaled nationally across all test takers while HSGPA is scaled locally within a school. In this study, the researchers propose that this difference in how SAT scores and HSGPA are scaled partially explains differences in validity and subgroup differences. Using a large data set consisting of 170,390 students each of whom matriculated at one of 114 separate colleges, the researchers find that awarding SAT scores by ranking SAT within a high school generally results in substantial reduction in the size of subgroup mean differences for this predictor. However, validity for predicting first‐year GPA is also reduced by a small amount. Conversely, placing HSGPA onto a nationally normed metric through the use of multiple regression procedures results in a moderate increase in the size of subgroup mean differences, while also producing a small increase in validity. Taken together, these findings suggest that differences in predictor scaling can partially explain differences in the size of subgroup mean differences between HSGPA and SAT scores and have implications for predictive power. 相似文献
70.