全文获取类型
收费全文 | 42515篇 |
免费 | 1576篇 |
国内免费 | 13篇 |
专业分类
44104篇 |
出版年
2019年 | 476篇 |
2018年 | 683篇 |
2017年 | 657篇 |
2016年 | 733篇 |
2015年 | 554篇 |
2014年 | 658篇 |
2013年 | 4205篇 |
2012年 | 1128篇 |
2011年 | 1153篇 |
2010年 | 739篇 |
2009年 | 743篇 |
2008年 | 1116篇 |
2007年 | 1015篇 |
2006年 | 957篇 |
2005年 | 847篇 |
2004年 | 817篇 |
2003年 | 818篇 |
2002年 | 790篇 |
2001年 | 1268篇 |
2000年 | 1219篇 |
1999年 | 962篇 |
1998年 | 485篇 |
1996年 | 561篇 |
1995年 | 552篇 |
1994年 | 522篇 |
1993年 | 490篇 |
1992年 | 954篇 |
1991年 | 858篇 |
1990年 | 847篇 |
1989年 | 760篇 |
1988年 | 765篇 |
1987年 | 734篇 |
1986年 | 742篇 |
1985年 | 739篇 |
1984年 | 660篇 |
1983年 | 559篇 |
1982年 | 444篇 |
1981年 | 459篇 |
1979年 | 602篇 |
1978年 | 480篇 |
1975年 | 579篇 |
1974年 | 567篇 |
1973年 | 622篇 |
1972年 | 583篇 |
1971年 | 522篇 |
1970年 | 459篇 |
1969年 | 442篇 |
1968年 | 557篇 |
1967年 | 480篇 |
1966年 | 468篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
Elizabeth Q. Gilson A. D. Baddeley 《Quarterly journal of experimental psychology (2006)》1969,21(2):180-184
Subjects tried to recall the location of a tactile stimulus on the underside of the forearm after delays of 0, 3, 5, 10, 15, 30, 45 and 60 sec. When “rehearsal” was prevented by requiring subjects to count backwards during the delay, accuracy of recall decreased systematically reaching an asymptote after 45 sec. When subjects were left free to “rehearse,” this did not affect the decline in accuracy over the first 10 sec. Between 10 and 15 sec. there was a significant increase in accuracy followed by a slow decline which had not reached asymptote by 60 sec. It is suggested that tactile STM (short-term memory) depends on two processes, a fading sensory trace which is unaffected by distraction and a less labile system which does not appear to be verbal but which depends on “rehearsal.” 相似文献
972.
Aubrey J. Yates Peter J. Smith Bryan D. Burke Maureen A. Keane 《Behavior research methods》1969,1(7):257-258
Procedures are described for the generation, synchronization. and accurate spacing of discrete dichotic stimulation material. A suggested standard definition of interpair interval is proposed. 相似文献
973.
Subjects named alphabetic characters that had been rotated, reflected, or inverted. Inversions induce more errors than mirror reflections and reflections induce more than rotations. In a significant number of mistakes a transformed character was assumed to be normally oriented, but in most a transformed character was confused with the mirror image of the original. The data suggest the existence of an “orientation set” in which the identiflcation of ambiguous characters depends largely on their anticipated orientation. The individuality of the data for the different orientations suggests that different transformations are compensated for in part by different mechanisms. 相似文献
974.
Richard D. Gilson 《Attention, perception & psychophysics》1969,5(3):181-182
Threshold elevations (TE) were determined at a testsite on the left thigh with the simultaneous presentation of combinations of maskers positioned on the trunk. It was found that the resultant TE from groups of up to 10 multiple maskers is nearly equal to the addition of the TE produced by each masker separately. 相似文献
975.
976.
977.
978.
979.
980.