全文获取类型
收费全文 | 314篇 |
免费 | 22篇 |
出版年
2021年 | 3篇 |
2020年 | 2篇 |
2019年 | 4篇 |
2018年 | 4篇 |
2017年 | 2篇 |
2016年 | 4篇 |
2015年 | 4篇 |
2014年 | 8篇 |
2013年 | 28篇 |
2012年 | 10篇 |
2011年 | 10篇 |
2010年 | 4篇 |
2009年 | 4篇 |
2008年 | 9篇 |
2007年 | 13篇 |
2006年 | 16篇 |
2005年 | 10篇 |
2004年 | 10篇 |
2003年 | 9篇 |
2002年 | 11篇 |
2001年 | 14篇 |
2000年 | 8篇 |
1999年 | 9篇 |
1998年 | 4篇 |
1997年 | 5篇 |
1996年 | 8篇 |
1995年 | 5篇 |
1994年 | 3篇 |
1993年 | 5篇 |
1992年 | 3篇 |
1991年 | 5篇 |
1990年 | 8篇 |
1989年 | 6篇 |
1988年 | 5篇 |
1987年 | 11篇 |
1986年 | 4篇 |
1985年 | 6篇 |
1984年 | 7篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1981年 | 7篇 |
1980年 | 5篇 |
1979年 | 5篇 |
1978年 | 2篇 |
1977年 | 6篇 |
1976年 | 4篇 |
1975年 | 6篇 |
1974年 | 5篇 |
1970年 | 3篇 |
1959年 | 1篇 |
排序方式: 共有336条查询结果,搜索用时 15 毫秒
41.
42.
Judgments of average magnitude: Analyses in terms of the functional measurement and two-stage models
Subjects made magnitude estimates of the average loudness of pairs of 1,000-Hz tones varying in sound pressure. A test of fit of an averaging model employing an analysis of variance suggested that the judgments were internally consistent. However, estimates of the parameters of a two-stage model based on the assumption that power transformations were imposed in both input and output implied a nonlinear output function, inconsistent with the averaging model. Additional analyses employing a nonmetric scaling solution also suggested that output was nonlinear, indicating that this implication was not an artifact of the strong assumptions of the two-stage model. Large differences were found among the output functions of individual subjects, and it was suggested that these may have inflated the error term in the analysis of variance, reducing its power to detect violations of the additive model. Similar analyses were performed on data from judgments of average grayness collected by Weiss (1972). 相似文献
43.
44.
Prior research has shown that nonhumans show an extreme preference for variable‐ over fixed‐delays to reinforcement. This well‐established preference for variability occurs because a reinforcer's strength or “value” decreases according to a curvilinear function as its delay increases. The purpose of the present experiments was to investigate whether this preference for variability occurs with human participants making hypothetical choices. In three experiments, participants recruited from Amazon Mechanical Turk made choices between variable and fixed monetary rewards. In a variable‐delay procedure, participants repeatedly chose between a reward delivered either immediately or after a delay (with equal probability) and a reward after a fixed delay (Experiments 1 and 2). In a double‐reward procedure, participants made choices between an alternative consisting of two rewards, one delivered immediately and one after a delay, and a second alternative consisting of a single reward delivered after a delay (Experiments 1 and 3). Finally, all participants completed a standard delay‐discounting task. Although we observed both curvilinear discounting and magnitude effects in the standard discounting task, we found no consistent evidence of a preference for variability—as predicted by two prominent models of curvilinear discounting (i.e., a simple hyperbola and a hyperboloid)—in our variable‐delay and double‐reward procedures. This failure to observe a preference for variability may be attributed to the hypothetical, rule‐governed nature of choices in the present study. In such contexts, participants may adopt relatively simple strategies for making more complex choices. 相似文献
45.
Humeans hold that the nomological features of our world, including causal facts, are determined by the global distribution of fundamental properties. Since persistence presupposes causation, it follows that facts about personal identity are also globally determined. I argue that this is unacceptable for a number of reasons, and that the doctrine of Humean supervenience should therefore be rejected. 相似文献
46.
Brett M Gibson Edward A Wasserman Lloyd Frei Keith Miller 《Behavior research methods, instruments & computers》2004,36(2):355-362
We report the construction of a new operant chamber that incorporates modern computer, touchscreen, and display technologies. An LCD display was housed in the front wall of a lightweight Plexiglas chamber. An Apple eMac computer was used to present visual stimuli on the monitor and to control other chamber events. Responses to the stimuli were recorded using a transparent resistive-type touchscreen that overlaid the monitor. The resulting system is simple and inexpensive to construct but powerful and flexible enough to explore a broad range of issues in animal learning and behavior. 相似文献
47.
Lois Labrianidis Antigone Lyberaki 《Journal of International Migration and Integration》2004,5(1):77-106
On the basis of findings from a sample of Albanian migrants who have returned to their country of origin from Greece and Italy,
we highlight that Greece attracts less skilled and less well off categories of migrants compared to Italy. However, the integration
patterns tell a different story. In spite of the fact that Greece does not represent the first choice of Albanians seeking
to migrate, and although those who go to Greece are not among the most qualified, nevertheless, they tend to adjust better
to their host society and labour market. Furthermore, returning migrants from Greece seem to be better equipped and more likely
to utilize the skills and knowledge acquired through migration compared to those returning from Italy. 相似文献
48.
49.
50.
Lois Labrianidis Panos Hatziprokopiou 《Journal of International Migration and Integration》2010,11(2):193-217
This paper examines aspects of immigrants’ entrepreneurship in Greece, focusing on the emergence of distinct ethnic business communities by migrants from China, Nigeria, Albania and the former USSR. Beginning from a literature review, it overviews the policy context and official statistics in Greece and discusses recent fieldwork findings in Thessaloniki. The diversity of entrepreneurial strategies and practises is explained through a typology based on the prevailing characteristics of immigrant businesses. We suggest that the entrepreneurship of migrants is embedded within the dynamics of immigrants’ integration and the broader factors on which this depends. This has important implications, calling for a realistic, coherent, inclusive and long-spanning migratory policy. 相似文献