全文获取类型
收费全文 | 1232篇 |
免费 | 46篇 |
专业分类
1278篇 |
出版年
2021年 | 16篇 |
2020年 | 19篇 |
2019年 | 31篇 |
2018年 | 36篇 |
2017年 | 32篇 |
2016年 | 43篇 |
2015年 | 26篇 |
2014年 | 21篇 |
2013年 | 114篇 |
2012年 | 46篇 |
2011年 | 51篇 |
2010年 | 26篇 |
2009年 | 27篇 |
2008年 | 32篇 |
2007年 | 41篇 |
2006年 | 34篇 |
2005年 | 36篇 |
2004年 | 37篇 |
2003年 | 46篇 |
2002年 | 29篇 |
2001年 | 17篇 |
2000年 | 37篇 |
1999年 | 26篇 |
1998年 | 15篇 |
1997年 | 18篇 |
1996年 | 21篇 |
1995年 | 20篇 |
1994年 | 10篇 |
1993年 | 9篇 |
1992年 | 21篇 |
1990年 | 18篇 |
1989年 | 15篇 |
1988年 | 16篇 |
1987年 | 22篇 |
1986年 | 13篇 |
1985年 | 14篇 |
1984年 | 18篇 |
1983年 | 8篇 |
1982年 | 9篇 |
1981年 | 11篇 |
1980年 | 15篇 |
1978年 | 21篇 |
1977年 | 15篇 |
1976年 | 12篇 |
1975年 | 19篇 |
1974年 | 17篇 |
1973年 | 14篇 |
1972年 | 9篇 |
1971年 | 10篇 |
1966年 | 13篇 |
排序方式: 共有1278条查询结果,搜索用时 5 毫秒
31.
Mechanisms of Verbal Short-Term Memory 总被引:1,自引:0,他引:1
Nelson Cowan 《Current directions in psychological science》1994,3(6):185-189
32.
33.
The feminist ethic of care has often been criticized for its inability to address four problems--the problem of exploitation as it threatens care givers, the problem of sustaining care-giver integrity, the dangers of conceiving the mother-child dyad normatively as a paradigm for human relationships, and the problem of security social justice on a broad scale among relative strangers. We argue that there are resources within the ethic of care for addressing each of these problems, and we sketch strategies for developing the ethic more fully. 相似文献
34.
35.
36.
John O. Nelson 《The Journal of value inquiry》1978,12(4):292-295
37.
38.
T H Nilsson T M Nelson 《Journal of experimental psychology. Human perception and performance》1981,7(1):141-150
Short-term memory for 16 monochromatic hues from 425 to 640 nm was measured after six delays from .1 to 24.3 sec by means of an iterative, momentary stimulus-matching technique. Small shifts were revealed in the remembered hue produced by certain wavelengths at some delays. These shifts did not follow trends consistent with a storage dependent on sensory pathway characteristics, perceptually unique hues, or semantic encoding but may reflect entropic effects in a storage that is remarkably unbiased. By indicating the discriminability of hues in memory, standard deviations of the delayed matches reveal other characteristics of what is stored: Their smooth, exponential growth questions the existence of "levels" and permits estimating the half-life of hue memory; their continued resemblance to the discrimination function for simultaneously perceived hues suggests that the stored activity; closely resembled the sensory response of color. The results also indicate how successive comparisons may be corrected in applied color work. 相似文献
39.
Nelson JR 《Christian century (Chicago, Ill. : 1902)》1983,100(21):636-638
40.
The question of whether an automatic detection task requires the use of limited-capacity resources was investigated in a series of dual-task experiments. The automatic task required subjects to detect a consistently mapped target digit in a display of letters. This task was paired with a variety of concurrent visual discriminations that could either occur in close proximity to the automatic target or in a disparate display area. The main finding was that accuracy in each task was higher in conditions allowing attention to be shared than when it had to be divided between separate areas. These results indicate that detection of automatic targets depends on the allocation of spatial attention to the target's area. 相似文献