全文获取类型
收费全文 | 83536篇 |
免费 | 3373篇 |
国内免费 | 42篇 |
专业分类
86951篇 |
出版年
2020年 | 863篇 |
2019年 | 1068篇 |
2018年 | 1510篇 |
2017年 | 1505篇 |
2016年 | 1626篇 |
2015年 | 1139篇 |
2014年 | 1366篇 |
2013年 | 6672篇 |
2012年 | 2522篇 |
2011年 | 2636篇 |
2010年 | 1612篇 |
2009年 | 1588篇 |
2008年 | 2402篇 |
2007年 | 2381篇 |
2006年 | 2072篇 |
2005年 | 1928篇 |
2004年 | 1861篇 |
2003年 | 1691篇 |
2002年 | 1749篇 |
2001年 | 2679篇 |
2000年 | 2525篇 |
1999年 | 1942篇 |
1998年 | 981篇 |
1997年 | 861篇 |
1996年 | 798篇 |
1993年 | 781篇 |
1992年 | 1688篇 |
1991年 | 1560篇 |
1990年 | 1580篇 |
1989年 | 1390篇 |
1988年 | 1356篇 |
1987年 | 1332篇 |
1986年 | 1374篇 |
1985年 | 1474篇 |
1984年 | 1155篇 |
1983年 | 1035篇 |
1979年 | 1201篇 |
1978年 | 851篇 |
1977年 | 772篇 |
1976年 | 804篇 |
1975年 | 1074篇 |
1974年 | 1158篇 |
1973年 | 1196篇 |
1972年 | 1065篇 |
1971年 | 965篇 |
1970年 | 921篇 |
1969年 | 902篇 |
1968年 | 1173篇 |
1967年 | 1093篇 |
1966年 | 979篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
A. S. Cua 《Journal of Chinese Philosophy》2000,27(3):269-285
22.
23.
Thomas A Wills Velma McBride Murry Gene H Brody Frederick X Gibbons Meg Gerrard Carmella Walker Michael G Ainette 《Health psychology》2007,26(1):50-59
OBJECTIVE: To test a theoretical model of how ethnic pride and self-control are related to risk and protective factors. DESIGN: A community sample of 670 African American youth (mean age = 11.2 years) were interviewed in households. MAIN OUTCOME MEASURES: Measures of cigarette smoking, alcohol use, and sexual behavior (lifetime to past month). RESULTS: Structural modeling analyses indicated parenting was related to self-control and self-esteem, and racial socialization was related to ethnic pride. Self-control and self-esteem variables were related to levels of deviance-prone attitudes and to perceptions of engagers in, or abstainers from, substance use and sexual behavior. The proximal factors (behavioral willingness, resistance efficacy, and peer behavior) had substantial relations to the criterion variables. Participant gender and parental education also had several paths in the model. Results were generally similar for the 2 outcome behaviors. CONCLUSIONS: In this population, self-esteem and self-control are related to parenting approaches and have pathways to attitudes and social perceptions that are significant factors for predisposing to, or protecting against, early involvement in substance use and sexual behavior. 相似文献
24.
Relationship of anxiety and depression to age and sex in an acute psychiatric population 总被引:1,自引:0,他引:1
R E Correll 《Psychological reports》1984,55(3):979-986
25.
26.
Subjects in five experiments read nine-digit memory lists from a cathode ray tube for immediate recall. Reading aloud always produced a localized and reliable advantage for the last item, compared to reading silently. Two experiments on whispered and mouthed lists, with or without simultaneous broadband noise, falsified expectations derived from the theory of precategorical acoustic storage. Three additional experiments showed no enhancement of recency in the silent conditions when the digits were drawn or spelled gradually on the screen, a result that is inconsistent with the changing-state hypothesis. The classic auditory-visual modality effect is large and reliable, but still poorly understood. 相似文献
27.
Jose A. Diez 《Synthese》2002,130(1):13-47
28.
29.
A. N. WILLIAMS 《Modern Theology》2004,20(4):505-526
The essay examines intellectual virtue in the Summa theologiae, taking it as an interpretative key to the epistemology of the Summa theologiae as a whole. Because Aquinas blurs the line between the acquired and the theological virtues, and between virtues and the gifts of the Spirit, it becomes impossible to maintain the distinction between the realms of nature and grace, or between natural reason and revealed truth: grace permeates the most ordinary activities of human reasoning. This reading of the Summa theologiae raises questions about many contemporary debates, particularly those concerning natural law. 相似文献
30.