全文获取类型
收费全文 | 28043篇 |
免费 | 490篇 |
专业分类
管理学 | 3577篇 |
民族学 | 150篇 |
人才学 | 7篇 |
人口学 | 2745篇 |
丛书文集 | 155篇 |
教育普及 | 3篇 |
理论方法论 | 2527篇 |
现状及发展 | 2篇 |
综合类 | 348篇 |
社会学 | 13607篇 |
统计学 | 5412篇 |
出版年
2023年 | 158篇 |
2021年 | 142篇 |
2020年 | 423篇 |
2019年 | 629篇 |
2018年 | 666篇 |
2017年 | 945篇 |
2016年 | 688篇 |
2015年 | 502篇 |
2014年 | 628篇 |
2013年 | 4785篇 |
2012年 | 941篇 |
2011年 | 828篇 |
2010年 | 666篇 |
2009年 | 646篇 |
2008年 | 730篇 |
2007年 | 723篇 |
2006年 | 648篇 |
2005年 | 645篇 |
2004年 | 629篇 |
2003年 | 566篇 |
2002年 | 605篇 |
2001年 | 691篇 |
2000年 | 623篇 |
1999年 | 607篇 |
1998年 | 453篇 |
1997年 | 425篇 |
1996年 | 426篇 |
1995年 | 415篇 |
1994年 | 369篇 |
1993年 | 380篇 |
1992年 | 427篇 |
1991年 | 406篇 |
1990年 | 395篇 |
1989年 | 403篇 |
1988年 | 372篇 |
1987年 | 345篇 |
1986年 | 340篇 |
1985年 | 388篇 |
1984年 | 380篇 |
1983年 | 358篇 |
1982年 | 283篇 |
1981年 | 248篇 |
1980年 | 262篇 |
1979年 | 286篇 |
1978年 | 221篇 |
1977年 | 218篇 |
1976年 | 199篇 |
1975年 | 186篇 |
1974年 | 173篇 |
1973年 | 139篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
152.
The importance of women on the bench and the influence of gender on judicial decision making has garnered much scholarly attention. We examine the voting behavior of male and female justices in 718 Fourth Amendment search and seizure votes cast on state Supreme Courts between 1980 and 2000. We find that women justices, controlling for institutional, political, and legal constraints, are more likely to rule in favor of the criminal defendant than their male brethren in cases decided after 1991 but not before. We also find women justices serving with female colleagues are more inclined to render liberal votes. We conclude the influence of gender may be evident in a wider variety of cases than those dealing with women's lives but that this influence is dependent upon the existence of a critical mass of women on the state court benches. 相似文献
153.
James P. McDermott G. Jogesh Babu John C. Liechty Dennis K. J. Lin 《Statistics and Computing》2007,17(4):311-321
We consider the problem of density estimation when the data is in the form of a continuous stream with no fixed length. In
this setting, implementations of the usual methods of density estimation such as kernel density estimation are problematic.
We propose a method of density estimation for massive datasets that is based upon taking the derivative of a smooth curve
that has been fit through a set of quantile estimates. To achieve this, a low-storage, single-pass, sequential method is proposed
for simultaneous estimation of multiple quantiles for massive datasets that form the basis of this method of density estimation.
For comparison, we also consider a sequential kernel density estimator. The proposed methods are shown through simulation
study to perform well and to have several distinct advantages over existing methods. 相似文献
154.
155.
It is well known that the unimodal maximum likelihood estimator of a density is consistent everywhere but at the mode. The authors review various ways to solve this problem and propose a new estimator that is concave over an interval containing the mode; this interval may be chosen by the user or through an algorithm. The authors show how to implement their solution and compare it to other approaches through simulations. They show that the new estimator is consistent everywhere and determine its rate of convergence in the Hellinger metric. 相似文献
156.
Susan A. Ostrander 《Nonprofit management & leadership》2007,18(2):237-253
This case study looks at changes in private foundation funding for higher education civic engagement from 1995 to 2005. The focus is three large, established foundations that were U.S. national leaders in supporting this activity during these years: Carnegie, Pew, and Kellogg. Data sources include (1) in‐depth conversations with four strategically placed foundation insiders and six nationally recognized campus leaders and (2) scans of Web sites of the three foundations that document the change in funding priorities over time, plus Web sites of the main campus initiatives supported and national campus civic engagement organizations such as Campus Compact. Research findings con‐ firm and specify other studies that suggest that foundations shift their funding priorities according to their perceived role as innovators, pressures to be accountable and show clear results, and their independence as private organizations. The article concludes by raising questions about private foundations generally in relation to issues of innovativeness, accountability, and independence. 相似文献
157.
158.
159.
This study examined the emergence of affect specificity in infancy. In this study, infants received verbal and facial signals of 2 different, negatively valenced emotions (fear and sadness) as well as neutral affect via a television monitor to determine if they could make qualitative distinctions among emotions of the same valence. Twenty 12‐ to 14‐month‐olds and 20 16‐ to 18‐month‐olds were examined. Results suggested that younger infants showed no evidence of referential specificity, as they responded similarly to both the target and distracter toys, and showed no evidence of affect specificity, showing no difference in play between affect conditions. Older infants, in contrast, showed evidence both of referential and affect specificity. With respect to affect specificity, 16‐ to 18‐month‐olds touched the target toy less in the fear condition than in the sad condition and showed a larger proportion of negative facial expressions in the sad condition versus the fear condition. These findings suggest a developmental emergence after 15 months of age for affect specificity in relating emotional messages to objects. 相似文献
160.
Vivyan C. Adair 《Sociology Compass》2008,2(5):1655-1671
Class theorists of embodiment in Sociology point to and illuminate both an over‐ and an under‐exposed body and experience that ultimately mark the bodies of the poor as ideologically, discursively and materially abject. In this essay, I map out theories of the bodies of the poor, including those of Marx, Engels, Elias, Bourdieu, Foucault, Donzelot and Adair. I suggest that an understanding of the ways in which the bodies of the poor are positioned as abject can facilitate a flexible and reflexive heuristic through which we can negotiate epistemic shifts between material and discursive categories, as well as providing us with a template through which we can come to understand even the most profoundly abject bodies, those of poor women in a welfare state, as potential sites of embodied agency and resistance, all central to the ethical and holistic study of sociology. 相似文献