全文获取类型
收费全文 | 4508篇 |
免费 | 2篇 |
国内免费 | 1篇 |
专业分类
4511篇 |
出版年
2018年 | 112篇 |
2017年 | 94篇 |
2016年 | 178篇 |
2015年 | 94篇 |
2014年 | 34篇 |
2013年 | 56篇 |
2012年 | 257篇 |
2011年 | 250篇 |
2010年 | 16篇 |
2009年 | 23篇 |
2008年 | 35篇 |
2007年 | 29篇 |
2006年 | 42篇 |
2005年 | 1317篇 |
2004年 | 657篇 |
2003年 | 444篇 |
2002年 | 135篇 |
2001年 | 26篇 |
2000年 | 11篇 |
1999年 | 23篇 |
1998年 | 6篇 |
1995年 | 3篇 |
1994年 | 12篇 |
1992年 | 25篇 |
1991年 | 41篇 |
1990年 | 58篇 |
1989年 | 44篇 |
1988年 | 27篇 |
1987年 | 41篇 |
1986年 | 37篇 |
1985年 | 29篇 |
1984年 | 25篇 |
1983年 | 19篇 |
1982年 | 3篇 |
1979年 | 32篇 |
1978年 | 10篇 |
1977年 | 7篇 |
1976年 | 10篇 |
1975年 | 28篇 |
1974年 | 32篇 |
1973年 | 30篇 |
1972年 | 25篇 |
1971年 | 25篇 |
1970年 | 17篇 |
1969年 | 19篇 |
1968年 | 16篇 |
1967年 | 17篇 |
1966年 | 16篇 |
1965年 | 7篇 |
1932年 | 3篇 |
排序方式: 共有4511条查询结果,搜索用时 9 毫秒
111.
Friedman A Kerkman DD Brown NR Stea D Cappello HM 《Psychonomic bulletin & review》2005,12(6):1054-1060
We examined some potential causes of bias in geographic location estimates by comparing location estimates of North American
cities made by Canadian, U.S., and Mexican university students. All three groups placed most Mexican cities near the equator,
which implies that all e influenced by shared beliefs about the locationthree groups wers of geographical regions relative
to global reference points. However, the groups divided North America into different regions and differed in the relative
accuracy of the estimates within them, which implies that there was an influence of culture-specific knowledge. The data support
a category-based system of plausible reasoning, in which biases in judgments are multiply determined, and underscore the utility
of the estimation paradigm as a tool in cross-cultural cognitive research. 相似文献
112.
Many memory theorists have assumed that forced-choice recognition tests can rely more on familiarity, whereas item (yes-no)
tests must rely more on recollection. In actuality, several studies have found no differences in the contributions of recollection
and familiarity underlying the two different test formats. Using word frequency to manipulate stimulus characteristics, the
present study demonstrated that the contributions of recollection to item versus forced-choice tests is variable. Low word
frequency resulted in significantly more recollection in an item test than did a forced-choice procedure, but high word frequency
produced the opposite result. These results clearly constrain any uniform claim about the degree to which recollection supports
responding in item versus forced-choice tests. 相似文献
113.
By regarding the latent random vectors as hypothetical missing data and based on the conditional expectation of the complete-data
log-likelihood function in the EM algorithm, we investigate assessment of local influence of various perturbation schemes
in a nonlinear structural equation model. The basic building blocks of local influence analysis are computed via observations
of the latent variables generated by the Metropolis-Hastings algorithm, while the diagnostic measures are obtained via the
conformal normal curvature. Seven perturbation schemes, including some perturbation schemes on latent vectors, are investigated.
The proposed procedure is illustrated by a simulation study and a real example.
Acknowledgment: This research is fully supported by a grant (CUHK 4243/02H) from the Research Grant Council of the Hong Kong
Special Administration Region. The authors are indebted to ICPSR and the relevant funding agency for allowing use of their
data, and to the Editor and reviewers for their valuable comments for improving the paper. 相似文献
114.
Magun-Jackson S 《Science and engineering ethics》2004,10(2):219-224
Ethics has become an increasingly important issue within engineering as the profession has become progressively more complex.
The need to integrate ethics into an engineering curriculum is well documented, as education does not often sufficiently prepare
engineers for the ethical conflicts they experience. Recent research indicates that there is great diversity in the way institutions
approach the problem of teaching ethics to undergraduate engineering students; some schools require students to take general
ethics courses from philosophical or religious perspectives, while others integrate ethics in existing engineering courses.
The purpose of this paper is to propose a method to implement the integration of ethics in engineering education that is pedagogically
based on Kohlberg’s stage theory of moral development. 相似文献
115.
116.
117.
The ability to discriminate the physical states of others could be an adaptive behavior, especially for social animals. For example, the ability to discriminate illness behavior would be helpful for avoiding spoiled foods. We report on an experiment with Japanese quails testing whether these birds can discriminate the physical states of conspecifics. The quails were trained to discriminate between moving video images of quails injected with psychoactive drugs and those in a normal (not injected) condition. Methamphetamine (stimulant) or ketamine (anesthetic) were used to produce drug-induced behaviors in conspecifics. The former induced hyperactive behavior and the latter hypoactive behavior. The subject quails could learn the discrimination and showed generalization to novel images of the drug-induced behaviors. They did not, however, show discriminative behavior according to the type and dosage of the drugs. Thus, they categorized the behavior not on the basis of degree of activity, but on the basis of abnormality. 相似文献
118.
119.
Mental health has long been defined as the absence of psychopathologies, such as depression and anxiety. The absence of mental
illness, however, is a minimal outcome from a psychological perspective on lifespan development. This article therefore focuses
on mental illness as well as on three core components of positive mental health: feelings of happiness and satisfaction with
life (emotional well-being), positive individual functioning in terms of self-realization (psychological well-being), and
positive societal functioning in terms of being of social value (social well-being). The two continua model holds that mental
illness and mental health are related but distinct dimensions. This model was studied on the basis of a cross-sectional representative
internet survey of Dutch adults (N = 1,340; 18–87 years). Mental illness was measured with the Brief Symptom Inventory and mental health with the Mental Health
Continuum Short Form. It was found that older adults, except for the oldest-old, scored lower on psychopathological symptoms
and were less likely to be mentally ill than younger adults. Although there were fewer age differences for mental health,
older adults experienced more emotional, similar social and slightly lower psychological well-being. In sum, today’s older
adults have fewer mental illness problems, but they are not in a better positive mental health than today’s younger adults.
These findings support the validity of the two continua model in adult development. 相似文献
120.
Heikki Ik?heimo 《Res Publica》2012,18(1):11-24
This article begins by tracing two issues to be kept in mind in discussing the theme of love as far back as Aristotle: on
the one hand the polysemy of the term philia in Aristotle, and on the other hand the fact that there is a focal or core meaning of philia that provides order to that polysemy. Secondly, it is briefly suggested that the same issues are, mutatis mutandis, central for understanding the discussion of love or Liebe by Hegel, the central classic reference in debates on recognition. Thirdly, by pointing out a certain ambiguity in Harry
Frankfurt’s recent work on love, the article focuses more closely on the thought that love in the simple sense which Aristotle
had pinpointed as the focal meaning of philia, which is arguably at the core of Hegel’s discussion of Liebe, and which still forms at least one of the core senses of the term, is a ‘personifying’ attitude of recognition. Finally,
drawing on the above points the article addresses the question whether love as a form of recognition is restricted to intimate
relations such as those between family-members, ‘lovers’, close friends and so on, or whether it has applications in interhuman
relations more broadly. The answer to this question, it is suggested, is essential for the viability of ethically substantial
notions of solidarity beyond circles of close acquaintances, whether within the civil society, across nations, or towards
future generations. 相似文献