全文获取类型
收费全文 | 48670篇 |
免费 | 1927篇 |
国内免费 | 18篇 |
专业分类
50615篇 |
出版年
2020年 | 540篇 |
2019年 | 691篇 |
2018年 | 935篇 |
2017年 | 1020篇 |
2016年 | 1028篇 |
2015年 | 728篇 |
2014年 | 912篇 |
2013年 | 4227篇 |
2012年 | 1643篇 |
2011年 | 1677篇 |
2010年 | 1085篇 |
2009年 | 1050篇 |
2008年 | 1548篇 |
2007年 | 1529篇 |
2006年 | 1390篇 |
2005年 | 1280篇 |
2004年 | 1228篇 |
2003年 | 1158篇 |
2002年 | 1203篇 |
2001年 | 1358篇 |
2000年 | 1269篇 |
1999年 | 1042篇 |
1998年 | 568篇 |
1997年 | 560篇 |
1996年 | 485篇 |
1995年 | 506篇 |
1994年 | 490篇 |
1993年 | 496篇 |
1992年 | 880篇 |
1991年 | 769篇 |
1990年 | 830篇 |
1989年 | 709篇 |
1988年 | 737篇 |
1987年 | 714篇 |
1986年 | 704篇 |
1985年 | 677篇 |
1984年 | 673篇 |
1983年 | 647篇 |
1982年 | 512篇 |
1981年 | 475篇 |
1979年 | 687篇 |
1978年 | 549篇 |
1977年 | 481篇 |
1976年 | 464篇 |
1975年 | 574篇 |
1974年 | 629篇 |
1973年 | 627篇 |
1972年 | 468篇 |
1968年 | 535篇 |
1967年 | 478篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
841.
John E. Overall 《Psychometrika》1960,25(2):159-172
A quantitative model for the behavior of albino rats in choice-making situations is presented. The model, which is based upon a cognitive conceptualization of the learning process, is shown to yield predictions which are equivalent to those produced by the linear operator stochastic models at the asymptotic limit but which differ from these during early trials in the learning situation. 相似文献
842.
843.
844.
845.
846.
847.
The relations between finger localization and various types of finger praxis were assessed by estimates of the inter-correlations among the performance of 100 six-year-old children. Finger localization was related significantly to those types of finger praxis which involve movements of the individual fingers with respect to each other. Right-left discrimination was related to finger localization, but not to the measures of finger praxis.
The findings are interpreted in terms of the construct of the finger schema, which can be viewed as a determinant of performance in both the localization and praxis tasks. This construct can also serve as an explanation of the observed concurrence of finger agnosia and finger apraxia as a consequence of cerebral disease. 相似文献
The findings are interpreted in terms of the construct of the finger schema, which can be viewed as a determinant of performance in both the localization and praxis tasks. This construct can also serve as an explanation of the observed concurrence of finger agnosia and finger apraxia as a consequence of cerebral disease. 相似文献
848.
849.
850.
Job satisfaction and turnover in a female clerical population 总被引:2,自引:0,他引:2
C L Hulin 《The Journal of applied psychology》1966,50(4):280-285