全文获取类型
收费全文 | 12681篇 |
免费 | 527篇 |
国内免费 | 2篇 |
出版年
2021年 | 73篇 |
2020年 | 135篇 |
2019年 | 168篇 |
2018年 | 236篇 |
2017年 | 260篇 |
2016年 | 261篇 |
2015年 | 200篇 |
2014年 | 262篇 |
2013年 | 1433篇 |
2012年 | 453篇 |
2011年 | 493篇 |
2010年 | 306篇 |
2009年 | 320篇 |
2008年 | 484篇 |
2007年 | 440篇 |
2006年 | 430篇 |
2005年 | 433篇 |
2004年 | 436篇 |
2003年 | 419篇 |
2002年 | 448篇 |
2001年 | 219篇 |
2000年 | 183篇 |
1999年 | 198篇 |
1998年 | 212篇 |
1997年 | 205篇 |
1996年 | 163篇 |
1995年 | 173篇 |
1994年 | 159篇 |
1993年 | 179篇 |
1992年 | 167篇 |
1991年 | 140篇 |
1990年 | 143篇 |
1989年 | 126篇 |
1988年 | 119篇 |
1987年 | 131篇 |
1986年 | 117篇 |
1985年 | 147篇 |
1984年 | 187篇 |
1983年 | 190篇 |
1982年 | 192篇 |
1981年 | 173篇 |
1980年 | 140篇 |
1979年 | 132篇 |
1978年 | 177篇 |
1977年 | 156篇 |
1976年 | 160篇 |
1975年 | 141篇 |
1974年 | 156篇 |
1973年 | 105篇 |
1972年 | 76篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
The event-related brain potential (ERP) technique was used to investigate the neural mechanism of non-target language processing in Chinese-English bilinguals. Participants were presented with a mixed list of Chinese and English words and required to make conceptual decisions for words in one language and ignore words in the other non-target language. Regardless of whether the nontarget word was in Chinese or English, the ERPs they elicited were modulated by word frequency, suggesting that their meaning had been accessed. The N400 peak was delayed in the English as the non-target language condition, probably because participants were less proficient in English. The results suggest that the non-target language can be processed during conceptual tasks with participants' proficiency in this language being a critical factor. 相似文献
982.
John Turri 《Synthese》2012,184(3):247-259
Is knowledge justified true belief? Most philosophers believe that the answer is clearly ‘no’, as demonstrated by Gettier cases. But Gettier cases don’t obviously refute the traditional view that knowledge is justified true belief (JTB). There are ways of resisting Gettier cases, at least one of which is partly successful. Nevertheless, when properly understood, Gettier cases point to a flaw in JTB, though it takes some work to appreciate just what it is. The nature of the flaw helps us better understand the nature of knowledge and epistemic justification. I propose a crucial improvement to the traditional view, relying on an intuitive and independently plausible metaphysical distinction pertaining to the manifestation of intellectual powers, which supplements the traditional components of justification, truth and belief. 相似文献
983.
984.
John A. Schuster 《Synthese》2012,185(3):467-499
One of the chief concerns of the young Descartes was with what he, and others, termed “physico-mathematics”. This signalled
a questioning of the Scholastic Aristotelian view of the mixed mathematical sciences as subordinate to natural philosophy,
non explanatory, and merely instrumental. Somehow, the mixed mathematical disciplines were now to become intimately related
to natural philosophical issues of matter and cause. That is, they were to become more ’physicalised’, more closely intertwined
with natural philosophising, regardless of which species of natural philosophy one advocated. A curious, short-lived yet portentous
epistemological conceit lay at the core of Descartes’ physico-mathematics—the belief that solid geometrical results in the
mixed mathematical sciences literally offered windows into the realm of natural philosophical causation—that in such cases
one could literally “see the causes”. Optics took pride of place within Descartes’ physico-mathematics project, because he
believed it offered unique possibilities for the successful vision of causes. This paper traces Descartes’ early physico-mathematical
program in optics, its origins, pitfalls and its successes, which were crucial in providing Descartes resources for his later
work in systematic natural philosophy. It explores how Descartes exploited his discovery of the law of refraction of light—an
achievement well within the bounds of traditional mixed mathematical optics—in order to derive—in the manner of physico-mathematics—causal
knowledge about light, and indeed insight about the principles of a “dynamics” that would provide the laws of corpuscular
motion and tendency to motion in his natural philosophical system. 相似文献
985.
986.
Abela JR Hankin BL Sheshko DM Fishman MB Stolow D 《Journal of abnormal child psychology》2012,40(2):277-287
The current study tested the stress-reactivity extension of response styles theory of depression (Nolen-Hoeksema Journal of
Abnormal Psychology 100:569–582, 1991) in a sample of high-risk children and early adolescents from a vulnerability-stress perspective using a multi-wave longitudinal
design. In addition, we examined whether obtained results varied as a function of either age or sex. During an initial assessment,
56 high-risk children (offspring of depressed parents; ages 7–14) completed measures assessing rumination and depressive symptoms.
Children were subsequently given a handheld personal computer which signalled them to complete measures assessing depressive
symptoms and negative events at six randomly selected times over an 8-week follow-up interval. In line with hypotheses, higher
levels of rumination were associated with prospective elevations in depressive symptoms following the occurrence of negative
events. Sex, but not age, moderated this association. Rumination was more strongly associated with elevations in depressive
symptoms following the occurrence of negative events in girls than in boys. 相似文献
987.
Predictors and Outcomes Associated with Trajectories of Revenge Goals from Fourth Grade through Seventh Grade 总被引:1,自引:0,他引:1
The present study identified longitudinal trajectories of revenge goals in a sample of at-risk youth (N = 240; 63.3% male) followed from fourth grade through seventh grade. Three revenge goal trajectory groups were identified:
a low-stable group, an increasing group, and a decreasing group. The increasing and decreasing groups were initially more
behaviorally and affectively dysregulated and believed that aggression would gain them more rewards relative to the low-stable
group. The increasing group was also more fearfully reactive compared to the decreasing group. Revenge goal trajectory groups
also predicted trajectories of reactive and proactive aggression from 4th through 7th grade. The increasing group was more
reactively aggressive and depressed and had poorer social skills in 8th grade compared to the other groups. Together, results
highlight the importance of considering revenge motivations as an indicator of risk and a potential focus for intervention. 相似文献
988.
This study used structural equation modeling to examine longitudinal relations among physical health, personality and mood in a sample of 360 college students. Research focused on the longitudinal associations among physical health and mood and their systematic relations with the Big Five personality dimensions of Extraversion and Neuroticism. Longitudinal analyses over successive 1-month intervals revealed lagged reciprocal effects between physical health and negative affect. After controlling for the effect of negative affect, physical health influenced subsequent positive affect, but positive affect did not influence subsequent physical health. Implications of these findings for subsequent research on health, personality, and emotions are discussed. 相似文献
989.
Using data from samples of 300 and 220 adoptive families from the Texas Adoption Project, aspects of generality of a “General Factor of Personality” (GFP) were examined: across different personality inventories, across different levels of analysis (items, scales) within an inventory, across self- and others’ judgments, and across sexes, ages, and generations. Considerable, though not complete, generality was found. The average correlation between GFPs from items and scales of a given inventory was .90; between GFPs from the scales of different inventories was .48. Also examined were the heritability of a GFP, its degree of correlation with a general cognitive factor, and its ability to predict real-life criteria such as educational level, marital stability, and substance abuse. 相似文献
990.
The present study aimed to refine current hypotheses regarding thematic reversal anomalies, which have been found to elicit either N400 or - more frequently - “semantic-P600” (sP600) effects. Our goal was to investigate whether distinct ERP profiles reflect aspectual-thematic differences between Agent-Subject Verbs (ASVs; e.g., ‘to eat’) and Experiencer-Subject Verbs (ESVs; e.g., ‘to love’) in English. Inanimate subject noun phrases created reversal anomalies on both ASV and ESV. Animacy-based prominence effects and semantic association were controlled to minimize their contribution to any ERP effects. An N400 was elicited by the target verb in the ESV but not the ASV anomalies, supporting the hypothesis of a distinctive aspectual-thematic structure between ESV and ASV. Moreover, the N400 finding for English ESV shows that, in contrast to previous claims, the presence versus absence of N400s for this kind of anomaly cannot be exclusively explained in terms of typological differences across languages. 相似文献