全文获取类型
收费全文 | 26939篇 |
免费 | 298篇 |
国内免费 | 2篇 |
专业分类
27239篇 |
出版年
2021年 | 85篇 |
2020年 | 128篇 |
2019年 | 110篇 |
2018年 | 3595篇 |
2017年 | 2923篇 |
2016年 | 2417篇 |
2015年 | 337篇 |
2014年 | 258篇 |
2013年 | 722篇 |
2012年 | 875篇 |
2011年 | 2667篇 |
2010年 | 2687篇 |
2009年 | 1640篇 |
2008年 | 1941篇 |
2007年 | 2413篇 |
2006年 | 272篇 |
2005年 | 468篇 |
2004年 | 414篇 |
2003年 | 339篇 |
2002年 | 301篇 |
2001年 | 151篇 |
2000年 | 131篇 |
1999年 | 130篇 |
1998年 | 122篇 |
1997年 | 119篇 |
1996年 | 93篇 |
1995年 | 79篇 |
1994年 | 75篇 |
1993年 | 79篇 |
1992年 | 89篇 |
1991年 | 81篇 |
1990年 | 75篇 |
1989年 | 50篇 |
1988年 | 48篇 |
1987年 | 57篇 |
1986年 | 60篇 |
1985年 | 71篇 |
1984年 | 66篇 |
1983年 | 70篇 |
1982年 | 63篇 |
1981年 | 75篇 |
1980年 | 68篇 |
1979年 | 62篇 |
1978年 | 68篇 |
1977年 | 71篇 |
1976年 | 65篇 |
1975年 | 54篇 |
1974年 | 60篇 |
1968年 | 40篇 |
1966年 | 41篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
To alert professionals and consumers about safety risks associated with approved drugs, the U.S. Food and Drug Administration (FDA) periodically issues Drug Safety Communications, or DSCs (previously known as advisories, warnings, and health care professional letters). This review consolidates balanced information from 22 DSCs issued over the last 15 years by the FDA for drugs with pediatric indications (for any disorder) that are used to treat pediatric emotional and behavioral disorders (ADHD drugs, antipsychotics, antidepressants, and antiepileptics/anticonvulsants). A single-source document of pediatric DSCs for these drugs was needed because none existed previously; finding DSC information on the FDA website can be challenging; and other information sources (e.g., manufacturer or advocacy websites, blogs, other media reports) may lack the objectivity or accuracy that the FDA is charged to maintain. This consolidation is intended to enable better informed risk-benefit analysis around treatment selection and drug safety monitoring. For the 22 DSCs, we summarize the safety concerns, the populations affected, and when available from the FDA, the incidence of the adverse events, precursors, and factors that may increase or mitigate the risk of these very serious (e.g., sudden death, life-threatening rash, liver failure), but typically low incidence (<1 %) adverse events (cardiometabolic complications with atypical antipsychotics and suicidality with antidepressants are more common). This review does not address the far more common, but usually less serious, side effects that also accompany these drugs. Implications of this review for research and practice are discussed. 相似文献
982.
We offer a minor technical correction to the published proof of part (ii) of the main theorem in Silbert and Thomas (Psychonomic Bulletin & Review, 20, 1–20, 2013) that somewhat limits the scope of the equivalence observed in that work. Specifically, in order for a mean shift integrality with decisional separability to be mimicked by a perceptually separable but nondecisionally separable configuration, one needs to assume stimulus invariance. This holds when all of the covariance matrices in the stimulus configuration are equal to each other. We note that part (i) of the theorem is unaffected by this modification; an empirical finding of perceptual separability and the failure of decisional separability can be mimicked by a perceptually nonseparable, decisionally separable configuration without restricting the covariance matrices to be equal. We also note that stimulus invariance is often assumed in simple designs (e.g., Macmillan & Ornstein in Journal of the Acoustical Society of America, 97, 1261–1285, 1998), due to the implausibility of different perceptual correlations being present within stimuli perched very closely in perceptual space. 相似文献
983.
984.
985.
Thomas Søbirk Petersen 《The Journal of Ethics》2014,18(2):137-151
Through the criminal justice system so-called dangerous offenders are, besides the offence that they are being convicted of and sentenced to, also punished for acts that they have not done but that they are believe to be likely to commit in the future. The aim of this paper is to critically discuss whether some adherents of retributivism give a plausible rationale for punishing offenders more harshly if they, all else being equal, by means of predictions are believed to be more dangerous than other offenders. While consequentialism has no problem, at least in principle, with this use of predictions most retributivists have been opponents of punishing offenders on the basis of predictions. How can an offender deserve to be punished for something that he has not done? But some retributivists like Anthony Duff and Stephen Morse have argued in favor of punishing offenders who are considered to be dangerous in the future more harshly than non-dangerous offenders. After having reconstructed their arguments in detail, it will be argued that both Duff’s and Morse’s attempts to give a retributivistic justification have several shortcomings. 相似文献
986.
Thomas C. Brickhouse 《The Journal of Ethics》2014,18(3):187-205
This paper argues against the view favored by many contemporary scholars that corrective justice in the Nicomachean Ethics is essentially compensatory and in favor of a bifunctional account according to which corrective justice aims at equalizing inequalities of both goods and evils resulting from various interactions between persons. Not only does the account defended in this paper better explain the broad array of examples Aristotle provides than does the standard interpretation, it also better fits Aristotle’s general definition of what is just. In the last section, the paper argues, again against the standard interpretation, that proportional reciprocity, the kind of justice discussed in Nicomachean Ethics V.5, has two forms and is closely linked to corrective justice. Although corrective justice and proportional reciprocity are conceptually distinct and do different work in Aristotle’s political philosophy, instances of proportional reciprocity are instantiated by instances of corrective justice. This linkage, the paper concludes, helps to explain why Aristotle would assign corrective justice such a prominent place in his theory of justice. 相似文献
987.
Thomas Schramme 《Ethical Theory and Moral Practice》2014,17(1):27-40
In this paper, I want to discuss the relation between ambivalence and the unity of the self. I will raise the question whether a person can be both ambivalent about his own will and nevertheless be wholehearted. Since Harry Frankfurt’s theory is my main point of reference, I briefly introduce his account of the will and the reasons for his opposition towards ambivalence in the first section. In the second section, I analyse different interpretations of ambivalence. In the third section, I provide a narrative account of a diachronic integration of the self that allows for the integration of volitional ambivalence. Finally, I scrutinise different meanings of the unity of the self, since disintegration, not ambivalence, seems to be bad for us. I conclude that persons can indeed be wholeheartedly ambivalent. 相似文献
988.
Hoffmann Alexandra Maran Thomas Grünbaum Tilman Liegl Simon Lobis Ulrich Sachse Pierre 《Motivation and emotion》2022,46(2):291-291
Motivation and Emotion - Mourning constitutes an important human emotion, which might cause—among other things—major depressive symptoms when lasting for too long. To date, no study... 相似文献
989.
Miron Anca M. Ball Thomas C. Branscombe Nyla R. Fieck Monica Ababei Cristinel Raymer Serena Tkaczuk Baylee Meives Megan M. 《Sex roles》2022,86(7-8):415-427
Sex Roles - The current study examines the nature of actions that U.S. college women (N?=?267) engage in to promote, protect, or enhance the welfare of other women. The study had two... 相似文献
990.
McIlduff Cari Andersson Ellaina Turner Karen M. T. Thomas Sue Davies Jadnah Hand Marmingee Carter Emily Einfeld Stewart Elliott Elizabeth J. 《Journal of child and family studies》2022,31(8):2175-2186
Journal of Child and Family Studies - To enhance the accessibility and acceptability of evidence-based parenting programs in Indigenous communities, there is a need to build a confident and skilled... 相似文献