全文获取类型
收费全文 | 1948篇 |
免费 | 251篇 |
国内免费 | 49篇 |
专业分类
2248篇 |
出版年
2025年 | 4篇 |
2024年 | 30篇 |
2023年 | 34篇 |
2022年 | 32篇 |
2021年 | 78篇 |
2020年 | 101篇 |
2019年 | 95篇 |
2018年 | 95篇 |
2017年 | 98篇 |
2016年 | 101篇 |
2015年 | 84篇 |
2014年 | 87篇 |
2013年 | 275篇 |
2012年 | 72篇 |
2011年 | 77篇 |
2010年 | 47篇 |
2009年 | 65篇 |
2008年 | 87篇 |
2007年 | 83篇 |
2006年 | 93篇 |
2005年 | 58篇 |
2004年 | 69篇 |
2003年 | 80篇 |
2002年 | 43篇 |
2001年 | 49篇 |
2000年 | 35篇 |
1999年 | 30篇 |
1998年 | 23篇 |
1997年 | 12篇 |
1996年 | 18篇 |
1995年 | 18篇 |
1994年 | 19篇 |
1993年 | 24篇 |
1992年 | 18篇 |
1991年 | 13篇 |
1990年 | 9篇 |
1989年 | 5篇 |
1988年 | 6篇 |
1986年 | 8篇 |
1985年 | 12篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1982年 | 6篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 6篇 |
1978年 | 12篇 |
1977年 | 10篇 |
1976年 | 8篇 |
1975年 | 3篇 |
排序方式: 共有2248条查询结果,搜索用时 0 毫秒
221.
In investigations into perception-action systems, variability of observable behavior may be considered to (a) interfere with inquiry, (b) be neither detrimental nor particularly useful to inquiry, or (c) play a crucial role in inquiry. The authors underscore recent suggestions that alternative (c) is a preferred strategy for the study of many motor behaviors. In tutorial fashion, the authors review the concepts of variability and determinism with respect to postural and rhythmic movements. Study of the variability of those behaviors has revealed crucial features suggestive of underlying mechanisms and control, such as particular blends of noise and determinism (piecewise determinism). It has also revealed general lessons (for example, more variable does not mean more random and more controllable does not mean more deterministic) that may extend to other classes of perceptual-motor behavior. 相似文献
222.
Alasdair M. Richmond 《Ratio》2013,26(3):233-249
Combining time travel with certain kinds of supertask, this paper proposes a novel model for Hell. Temporally‐closed spacetimes allow otherwise impossible opportunities for material kinds of damnation and reveal surprising limitations on metaphysical objections to Hell. Prima facie, eternal damnation requires either infinite amounts of time or time for the damned to speed‐up arbitrarily. However, spatiotemporally finite ‘time travel’ universes can host unending personal torment for infinitely many physical beings, while keeping fixed finite limits on rates of temporal passage. Such ‘Hilbert's Inferno’ spacetimes suggest neither materialism nor the finitude of time and space need forbid Hell. A material Hell can be spatiotemporally finite yet eternal for its inhabitants. Hilbert's Inferno also sheds light on Hell's location and accessibility, and shows that some spacetimes are intrinsically better suited to punishment than reward. 相似文献
223.
224.
Justin Newton Scanlan Anita C. Bundy Lynda R. Matthews 《Journal of community & applied social psychology》2010,20(3):232-247
A vast body of literature has reported on the association between unemployment and poor psychological health. Nonetheless, there remains limited understanding of the influence of meaningfulness of time use, suggested by some to be the key mediator between time use and health. This project set out to explore the association between meaningful time use and health in 18‐ to 25‐year‐old unemployed people. In April 2007, 150 unemployed 18‐ to 25‐year‐old Australians (56% female) completed an online survey package exploring meaningfulness of time use and health. Hierarchical stepwise regression equations were developed to analyse the relationship between psychological health and measures of meaningful time use. Results provided partial support for the hypothesis that measures of meaningful time use would contribute to the prediction of psychological health. The addition of the person measure for the combined construct of ‘meaningful time use’ failed to make a significant contribution towards the prediction of psychological health. However, ‘reason for doing the activity’ emerged as a significant predictor. Findings provide preliminary evidence for the establishment of activity‐based programs to support young unemployed people. Further research is required to evaluate the outcomes of such programs and to replicate this study with other groups of unemployed individuals. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
225.
Time duration is perceived to be longer when accompanied by dynamic sensory stimulation than when accompanied by static stimulation. This distortion of time perception is thought to be due to the acceleration of an internal pacemaker that has been assumed to be the main component of temporal judgments. In order to investigate whether the function of the internal pacemaker is modality dependent or independent, we examined the correlation of visual flicker and auditory flutter effects on a temporal production task. While seeing a 10‐Hz visual flicker or hearing a 10‐Hz auditory flutter, participants estimated a duration of 2500 ms as accurately as possible by pressing a button. The results showed a significant within‐individual correlation between the time distortion due to visual flicker and that due to auditory flutter. Additionally, we found that time distortion due to auditory flutter tended to be larger in female participants than in male participants. These results suggest that the mechanisms underlying subjective time dilation are similar between vision and audition within individuals, but that they vary across individuals. 相似文献
226.
Environmental issues entail both a social conflict (private vs. public interests) and a temporal conflict (short- vs. long-term interests). This paper focuses on the role temporal concerns play in influencing environmental engagement by quantitatively integrating results of studies that assessed the associations between time perspective and proenvironmental attitudes and behaviors. The meta-analysis included a total of 19 independent samples and 6,301 participants from seven countries (Australia, Brazil, Germany, Mexico, New Zealand, Norway, and the United States). Results showed that the associations between time perspective and proenvironmental behaviors were higher than those for proenvironmental attitudes. Supporting predictions, the associations between future time perspective and proenvironmental behaviors were strong and nontrivial compared to those for the combined past-present time perspective. The findings indicate that future time perspective seems to play an important role in influencing individuals' attitudes and behaviors towards the environment. Implications of the findings for theory and practice are discussed. 相似文献
227.
Megan R Heinicke James E Carr Linda A LeBlanc 《Journal of applied behavior analysis》2012,45(3):511-526
Research on functional response classes has applied significance because less severe forms of problem behavior have been found to co‐occur with more severe forms. In addition, the most severe forms of problem behavior are sometimes targeted for intervention without monitoring other less severe forms. In such cases, it is unknown whether and how untreated forms of problem behavior covary with the targeted behaviors. The present study employed a translational procedure (with button presses as the target behavior) to investigate response covariation under noncontingent reinforcement with typically developing preschoolers. The results indicated that noncontingent reinforcement was generally effective in decreasing all response class members when only one member was targeted. 相似文献
228.
The turbulence of the new economy puts demands on organizations to respond rapidly, flexibly and creatively to changing environments. Meetings are one of the organizational sites in which organizational actors “do” creativity; interaction in groups can be an important site for generating creative ideas and brainstorming. Additionally, Blount (2004) demonstrated the importance of organizational temporalities for group performance. We draw on both of these literatures and examine how temporal structures influence the climate for creativity, or the extent to which creativity is fostered, within groups. Specifically, we develop a hypothesis linking organization‐ and job‐level temporal structures to the extent to which managers structure meetings with a climate supportive of creativity. Our results demonstrate that a nuanced relationship exists between temporal structures and creative climate such that certain temporal structures appear to either enhance or decrease the creative climate of meetings. We end with a discussion of the implications of the findings for management. 相似文献
229.
The purpose of the study was to investigate the effects of face consciousness on happiness and the moderating role of financial situation on this relationship. We first examined our hypotheses in study 1 in a particular setting of consumption, and replicated our findings in study 2 in a more generalized setting of interpersonal situations. The two studies produced essentially consistent results. We found individuals high on face consciousness tend to be less happy, and the negative association between face consciousness and happiness is ameliorated by their financial situation. These results revealed the importance of face consciousness as an individual difference in predicting happiness. The implications of these findings for future research are discussed. 相似文献
230.
Thomas M. Kelley 《Counselling and Psychotherapy Research》2011,11(2):140-147
Aims: To determine the relationship between thought recognition, a major construct of principle‐based correctional counselling, and psychological wellbeing. Method: Following several weekly group sessions of Principle‐Based Correctional Counselling, 54 adult prisoners on probation completed two measures of thought recognition and the Well‐Being Inventory. In a follow‐up study, 30 participants completed the Mindful Attention Awareness Scale. Results: Significant positive relationships were found between both measures of thought recognition and psychological wellbeing and, in the follow‐up study, both measures of thought recognition and mindfulness. Discussion: Possible explanations for the relationship between thought recognition and psychological wellbeing, and thought recognition and mindfulness are discussed. Implications for practice: Teaching correctional clients the principles behind generic human psychological functioning, and the innate design behind human thinking, appears to improve their thinking and draw out their innate healthy functioning. 相似文献