全文获取类型
收费全文 | 593篇 |
免费 | 20篇 |
专业分类
613篇 |
出版年
2023年 | 4篇 |
2022年 | 4篇 |
2020年 | 13篇 |
2019年 | 20篇 |
2018年 | 12篇 |
2017年 | 20篇 |
2016年 | 20篇 |
2015年 | 11篇 |
2014年 | 22篇 |
2013年 | 73篇 |
2012年 | 31篇 |
2011年 | 24篇 |
2010年 | 15篇 |
2009年 | 21篇 |
2008年 | 18篇 |
2007年 | 19篇 |
2006年 | 14篇 |
2005年 | 5篇 |
2004年 | 11篇 |
2003年 | 14篇 |
2002年 | 12篇 |
2001年 | 6篇 |
2000年 | 10篇 |
1999年 | 7篇 |
1998年 | 12篇 |
1997年 | 9篇 |
1996年 | 6篇 |
1993年 | 6篇 |
1992年 | 5篇 |
1991年 | 8篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1986年 | 6篇 |
1984年 | 6篇 |
1983年 | 7篇 |
1982年 | 11篇 |
1981年 | 9篇 |
1980年 | 4篇 |
1979年 | 7篇 |
1978年 | 9篇 |
1977年 | 12篇 |
1975年 | 3篇 |
1974年 | 10篇 |
1973年 | 7篇 |
1972年 | 6篇 |
1970年 | 3篇 |
1969年 | 3篇 |
1967年 | 3篇 |
1966年 | 5篇 |
1964年 | 3篇 |
排序方式: 共有613条查询结果,搜索用时 7 毫秒
581.
ABSTRACT Police use-of-force in general, and police use of deadly force in particular, has been at the forefront of national media attention in recent years. Despite this visibility, scholarly attention to the complexities and nuances of the dynamics at play that lead to fatal and non-fatal outcomes for suspects involved in these encounters has been limited. As such, the current study draws from data collected from 2015 to 2018 in the state of Texas to examine the officer-, suspect-, and situational-level correlates and predictors of suspect death resulting from being involved in an officer-involved shooting. Bivariate results suggest that officer race, suspect race, the suspect being armed with a deadly weapon, and the officer responding to a suspicious activity call are significantly associated with suspect death versus being injured in an officer-involved shooting. More rigorous multivariate results reveal that the situational context (i.e., the suspect being armed with a deadly weapon and the incident resulting from a suspicious activity call) is particularly relevant for predicting the lethality of an officer-involved shooting for the suspect. Study limitations and directions for future research are also discussed. 相似文献
582.
583.
Wesley C. Salmon 《Philosophical Studies》1966,17(1-2):13-18
584.
585.
586.
Roland Baddeley 《Cognitive Science》1997,21(3):351-372
Physiologists have long proposed that correlated input activity is important in normal sensory development. Here it is postulated that the visual system is sensitive to the correlation in image intensity across the visual field, and that these correlations are used to help calibrate spatial representations. Since measurements made near to each other in the visual field are more correlated than measurements made at a distance, the degree of correlation can be used as an estimate of the distance between two measurements and can therefore be used to calibrate a roughly organized spatial representation. We therefore explored the hypothesis that low level spatial representations are calibrated using a signal based on image intensity correlation. If the visual system uses input statistics to calibrate its spatial representation, then any distortions and anisotropies in these input statistics should be mirrored by distortions in the representation of space. To test the psychological implications of this hypothesis, a collection of 81 images of open and urban landscapes were used to estimate the degree of correlation between image intensity measurement pairs as a function of both distance and orientation. Doing this we show that a system that used the statistics measured to calibrate its representation would show: (1) a horizontal-vertical illusion;(2) the magnitude of this illusion would depend on the amount of open and urban landscapes in the environment;(3) there would be a nontrivial relationship between line orientation and judged length. Analogues of all these distortions and regularities can be found in the psychophysical literature on distance estimation. This gives strength to the proposal that spatial representations are calibrated using input statistics. 相似文献
587.
588.
Wesley J. Kasprow Doreen Catterson Todd R. Schachtman Ralph R. Miller 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1984,36(1):53-63
Using lick suppression by water-deprived rats as an associative index, white noise-footshock pairings resulted in less manifest conditioning when repeated non-reinforced presentations of the white noise preceded conditioning than when no stimulus pre-exposure was given, i.e., latent inhibition was observed. However, the latent inhibition deficit was reduced in animals who received as a reminder treatment shock-alone presentations in another context during the retention interval. Animals conditioned without prior stimulus pre-exposure and those exposed to the white noise and shock unpaired during the conditioning phase of the study showed no change in lick suppression as a result of the reminder treatment. These results suggest that the behavioural deficit produced by non-reinforced pre-exposure to the to-be-conditioned stimulus arises at least in part from a reversible retrieval failure rather than a lack of acquisition. 相似文献
589.
590.