全文获取类型
收费全文 | 6607篇 |
免费 | 392篇 |
国内免费 | 2篇 |
专业分类
7001篇 |
出版年
2021年 | 59篇 |
2020年 | 117篇 |
2019年 | 136篇 |
2018年 | 172篇 |
2017年 | 223篇 |
2016年 | 221篇 |
2015年 | 163篇 |
2014年 | 191篇 |
2013年 | 767篇 |
2012年 | 306篇 |
2011年 | 336篇 |
2010年 | 203篇 |
2009年 | 215篇 |
2008年 | 270篇 |
2007年 | 286篇 |
2006年 | 245篇 |
2005年 | 242篇 |
2004年 | 238篇 |
2003年 | 205篇 |
2002年 | 214篇 |
2001年 | 103篇 |
2000年 | 117篇 |
1999年 | 108篇 |
1998年 | 98篇 |
1997年 | 86篇 |
1996年 | 96篇 |
1995年 | 88篇 |
1994年 | 78篇 |
1993年 | 62篇 |
1992年 | 87篇 |
1991年 | 64篇 |
1990年 | 56篇 |
1989年 | 53篇 |
1988年 | 55篇 |
1987年 | 46篇 |
1986年 | 47篇 |
1985年 | 62篇 |
1984年 | 60篇 |
1983年 | 51篇 |
1982年 | 75篇 |
1981年 | 73篇 |
1980年 | 54篇 |
1979年 | 54篇 |
1978年 | 45篇 |
1977年 | 66篇 |
1976年 | 42篇 |
1975年 | 49篇 |
1974年 | 41篇 |
1973年 | 52篇 |
1972年 | 38篇 |
排序方式: 共有7001条查询结果,搜索用时 0 毫秒
901.
Annelies Vredeveldt Alieke Hildebrandt Peter J. van Koppen 《Memory (Hove, England)》2016,24(5):669-682
Crimes are often observed by multiple witnesses. Research shows that witnesses can contaminate each other's memory, but potential benefits of co-witness discussion have not yet been investigated. We examined whether witnesses can help each other remember, or prune each other's errors. In a research design with high ecological validity, attendees of a theatre play were interviewed approximately one week later about a violent scene in the play. The couples that signed up for our study had known each other for 31 years on average. Participants were first interviewed individually and then took part in a collaborative interview. We also included a control condition in which participants took part in two individual interviews. Collaboration did not help witnesses to remember more about the scene, but collaborative pairs made significantly fewer errors than nominal pairs. Further, quantitative and qualitative analyses of retrieval strategies during the discussion revealed that couples who actively acknowledged, repeated, rephrased, and elaborated upon each other's statements remembered significantly more information overall. Taken together, our findings suggest that, under certain circumstances, discussion between witnesses is not such a bad idea after all. 相似文献
902.
903.
Understanding human behavior in the context of exploration and navigation is an important but challenging problem. Such understanding can help in the design of safe structures and spaces that implicitly aid humans during evacuation or other emergency situations. In particular, the role that memory plays in this process is something that is crucial to understand. In this paper, we develop a novel serious game-based experimental approach to understanding the non-randomness and the impact of memory on the human exploration process. We show that a simple memory model, with a depth of between 6 and 8 steps, is sufficient to approximate a ‘human-like’ level of exploration efficiency. We also demonstrate the advantages that a game-based experimental methodology brings to these kinds of experiments in the amount of data that can be collected as compared to traditional experiments. We feel that these findings have important implications for ‘safety-by-design’ in complex infrastructural structures. 相似文献
904.
905.
906.
Peter Joseph Gloviczki 《Journal of Loss and Trauma》2016,21(5):447-450
In this paper, I use autoethnographic sketches (Rambo, 2007) to examine the way that sports have taught me the value of persistence. Specifically, I explore the way that (a) playing baseball as a young child, (b) serving as the team manager on the high school football team, and (c) working out as an adult have each equipped me to cope with the limitations associated with my physical disability, cerebral palsy, while also allowing me to articulate my relationship to my body on my own terms. I hope that this paper encourages readers to examine the practices that undergird their lives and to explore the origins of the values that motivate their everyday experiences. 相似文献
907.
Like most own-group biases in face recognition, the own-age bias (OAB) is thought to be based either on perceptual expertise or socio-cognitive motivational mechanisms [Wolff, N., Kemter, K., Schweinberger, S. R., &; Wiese, H. (2013). What drives social in-group biases in face recognition memory? ERP evidence from the own-gender bias. Social Cognitive and Affective Neuroscience. doi:10.1093/scan/nst024]. The present study employed a recognition paradigm with eye-tracking in order to assess whether participants actively viewed faces of their own-age differently to that of other-age faces. The results indicated a significant OAB (superior recognition for own-age relative to other-age faces), provided that they were upright, indicative of expertise being employed for the recognition of own-age faces. However, the eye-tracking results indicate that viewing other-age faces was qualitatively different to the viewing of own-age faces, with more nose fixations for other-age faces. These results are interpreted as supporting the socio-cognitive model of the OAB. 相似文献
908.
Peter Singer 《Journal of Global Ethics》2016,12(2):161-169
Anthony Skelton, Violetta Igneski and Tracy Isaacs share my view that our obligations to help people in extreme poverty go beyond what is conventionally accepted. Nevertheless, the other contributors argue that my view is too demanding, while noting some tensions between my different writings on this issue. I explain my position, drawing on Sidgwick’s distinction between what someone ought to do, and what we should praise or blame someone for doing or not doing. I also respond to the position that Skelton considers preferable to mine, drawing this time on an argument that Katarzyna de Lazari-Radek and I have made in our recent book, The Point of View of the Universe. I also address Igneski’s concerns about gender inequality, and indicate my broad agreement with Isaacs’ suggestion that effective altruism could benefit from a more co-ordinated approach. 相似文献
909.
Anneka Dawson Alison Pike Lauren Bird 《European Journal of Developmental Psychology》2016,13(4):452-471
The present study used a longitudinal, multi-informant approach to examine which specific elements of parents’ gendered attitudes and behaviours were predictive of multiple dimensions of children’s gender development. One hundred and six families with two children (older sibling M = 7.45 years and younger sibling M = 5.19 years at Time 1) were assessed at two time points four to five years apart. At Time 1, parents reported on division of household labour, their own gender-role attitudes (GRAs), and children’s gendered preferences. At Time 2, children reported on their gendered preferences, GRAs and gendered personality traits. Results from multilevel modelling showed that fathers’ egalitarian GRA and egalitarian division of household tasks were predictive of egalitarian child GRA and outcomes, but child sex did not moderate these relationships. As some gender measures were more strongly correlated than others, these findings highlight the importance of examining multiple dimensions of both children’s and parents’ gendered attitudes and behaviours. 相似文献
910.
This paper argues that sharp distinctions between formal ritual action and everyday practice cannot always be sustained. Drawing on ethnographic fieldwork among British Quakers and Swedish charismatic Protestants, we seek to show that both groups manifest an experiential aesthetic that constructs and is constructed by engagement in daily life. The Quaker aesthetic we call 'the plain', and the charismatic aesthetic we term 'the positive'. In presenting our argument, we adopt Bourdieu's concept of habitus and extend its meaning to take account of material culture in the establishment of religious commitment. 相似文献