全文获取类型
收费全文 | 9752篇 |
免费 | 321篇 |
专业分类
管理学 | 1371篇 |
民族学 | 52篇 |
人才学 | 2篇 |
人口学 | 916篇 |
丛书文集 | 46篇 |
理论方法论 | 975篇 |
综合类 | 304篇 |
社会学 | 4332篇 |
统计学 | 2075篇 |
出版年
2023年 | 64篇 |
2022年 | 45篇 |
2021年 | 81篇 |
2020年 | 160篇 |
2019年 | 220篇 |
2018年 | 254篇 |
2017年 | 352篇 |
2016年 | 312篇 |
2015年 | 221篇 |
2014年 | 247篇 |
2013年 | 1650篇 |
2012年 | 396篇 |
2011年 | 311篇 |
2010年 | 249篇 |
2009年 | 225篇 |
2008年 | 252篇 |
2007年 | 239篇 |
2006年 | 198篇 |
2005年 | 245篇 |
2004年 | 233篇 |
2003年 | 261篇 |
2002年 | 270篇 |
2001年 | 237篇 |
2000年 | 214篇 |
1999年 | 206篇 |
1998年 | 167篇 |
1997年 | 131篇 |
1996年 | 144篇 |
1995年 | 122篇 |
1994年 | 125篇 |
1993年 | 123篇 |
1992年 | 148篇 |
1991年 | 128篇 |
1990年 | 122篇 |
1989年 | 113篇 |
1988年 | 121篇 |
1987年 | 115篇 |
1986年 | 109篇 |
1985年 | 131篇 |
1984年 | 102篇 |
1983年 | 112篇 |
1982年 | 79篇 |
1981年 | 79篇 |
1980年 | 77篇 |
1979年 | 82篇 |
1978年 | 82篇 |
1977年 | 57篇 |
1976年 | 52篇 |
1975年 | 62篇 |
1974年 | 52篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
AbstractThe economic mobility of individuals and households is of fundamental interest. While many measures of economic mobility exist, reliance on transition matrices remains pervasive due to simplicity and ease of interpretation. However, estimation of transition matrices is complicated by the well-acknowledged problem of measurement error in self-reported and even administrative data. Existing methods of addressing measurement error are complex, rely on numerous strong assumptions, and often require data from more than two periods. In this article, we investigate what can be learned about economic mobility as measured via transition matrices while formally accounting for measurement error in a reasonably transparent manner. To do so, we develop a nonparametric partial identification approach to bound transition probabilities under various assumptions on the measurement error and mobility processes. This approach is applied to panel data from the United States to explore short-run mobility before and after the Great Recession. 相似文献
4.
5.
Theory and Decision - 相似文献
6.
7.
Politics and Scientific Expertise: Scientists, Risk Perception, and Nuclear Waste Policy 总被引:2,自引:0,他引:2
To study the homogeneity and influences on scientists'perspectives of environmental risks, we have examined similarities and differences in risk perceptions, particularly regarding nuclear wastes, and policy preferences among 1011 scientists and engineers. We found significant differences ( p 0.05)in the patterns of beliefs among scientists from different fields of research. In contrast to physicists, chemists, and engineers, life scientists tend to: (a)perceive the greatest risks from nuclear energy and nuclear waste management; (b)perceive higher levels of overall environmental risk; (c)strongly oppose imposing risks on unconsenting individuals; and (d)prefer stronger requirements for environmental management. On some issues related to priorities among public problems and calls for government action, there are significant variations among life scientists or physical scientists. We also found that–independently of field of research–perceptions of risk and its correlates are significantly associated with the type of institution in which the scientist is employed. Scientists in universities or state and local governments tend to see the risks of nuclear energy and wastes as greater than scientists who work as business consultants, for federal organizations, or for private research laboratories. Significant differences also are found in priority given to environmental risks, the perceived proximity of environmental disaster, willingness to impose risks on an unconsenting population, and the necessity of accepting risks and sacrifices. 相似文献
8.
What do voters really know about party platforms and how do they perceive the contents? Are there any relationships between party election platforms and electoral behavior? Despite of much research on parties, there are hardly any answers to these questions. If political parties devise programmes in order to influence political attitudes or electoral behavior, it will be necessary that these programmes are read by people. But it seems to be unclear if and how people do so. This article shows clearly that voters don’t know much about party manifestoes. Still, programmes are more important for voters than many people believe. Programmes are also an important factor for electoral behavior. But there is still a lack of data to get evident results. 相似文献
9.
Sandra G. Turner Carol P. Kaplan Luis Zayas Ruth E. Ross 《Child and Adolescent Social Work Journal》2002,19(5):357-374
Epidemiological data show high rates of suicide attempts among adolescent Latinas. Few studies have addressed the psychosocial, cultural and family correlates of suicide attempts among this age group of a rapidly growing population. The authors studied 31 adolescent Hispanic females who were receiving mental health services; 14 girls had attempted suicide in the previous five years and 17 had never attempted suicide. The two groups of girls did not differ significantly with respect to demographic profiles, levels of depression, family type, acculturation, or self-esteem. However, as hypothesized, the mutuality between girls and their mothers was lower among suicide attempters. Maladaptive coping skills of withdrawal and wishful thinking were more commonly used by attempters, and non-attempters used emotional regulation and problem-solving more frequently. Findings are discussed within the context of the empirical and theoretical literature and implications for practice are considered. 相似文献
10.
The authors examined the impact of sense of coherence on the career thought processes of a sample of college students. A. Antonovsky (1987) defined sense of coherence as the global orientation that the world is comprehensible, manageable, and meaningful. Study participants completed the Sense of Coherence Scale (A. Antonovsky, 1987) and the Career Thoughts Inventory (CTI; J. P. Sampson, G. W. Peterson, J. G. Lenz, R. C. Reardon, & D. E. Saunders, 1996). Multivariate tests indicated a medium relationship between sense of coherence and CTI Total and subscale scores; sense of coherence accounted for 14% of the variance. Univariate tests also indicated a medium relationship between sense of coherence and each subscale. 相似文献