全文获取类型
收费全文 | 4531篇 |
免费 | 129篇 |
专业分类
管理学 | 679篇 |
民族学 | 26篇 |
人才学 | 1篇 |
人口学 | 454篇 |
丛书文集 | 39篇 |
教育普及 | 1篇 |
理论方法论 | 540篇 |
综合类 | 51篇 |
社会学 | 2321篇 |
统计学 | 548篇 |
出版年
2021年 | 28篇 |
2020年 | 60篇 |
2019年 | 78篇 |
2018年 | 80篇 |
2017年 | 130篇 |
2016年 | 100篇 |
2015年 | 74篇 |
2014年 | 82篇 |
2013年 | 777篇 |
2012年 | 141篇 |
2011年 | 169篇 |
2010年 | 109篇 |
2009年 | 133篇 |
2008年 | 146篇 |
2007年 | 144篇 |
2006年 | 158篇 |
2005年 | 142篇 |
2004年 | 131篇 |
2003年 | 122篇 |
2002年 | 130篇 |
2001年 | 88篇 |
2000年 | 95篇 |
1999年 | 85篇 |
1998年 | 67篇 |
1997年 | 71篇 |
1996年 | 90篇 |
1995年 | 66篇 |
1994年 | 64篇 |
1993年 | 59篇 |
1992年 | 61篇 |
1991年 | 58篇 |
1990年 | 53篇 |
1989年 | 63篇 |
1988年 | 45篇 |
1987年 | 42篇 |
1986年 | 59篇 |
1985年 | 58篇 |
1984年 | 57篇 |
1983年 | 45篇 |
1982年 | 36篇 |
1981年 | 43篇 |
1980年 | 38篇 |
1979年 | 47篇 |
1978年 | 43篇 |
1977年 | 34篇 |
1976年 | 40篇 |
1975年 | 40篇 |
1974年 | 28篇 |
1972年 | 17篇 |
1971年 | 26篇 |
排序方式: 共有4660条查询结果,搜索用时 15 毫秒
991.
992.
993.
Females pregnant out of wedlock who chose to bear their children in a maternity home situation were compared with females who chose abortion as their option. Maternity home pregnants were younger, less educated, more regular church attenders, less aware of abortion, less sexually premissive, in poorer relationship with the putative father, and less likely to be satisfied with their pregnancy decision than their abortion choice counterparts. 相似文献
994.
Schor Juliet B. Attwood-Charles William Cansoy Mehmet Ladegaard Isak Wengronowitz Robert 《Theory and Society》2020,49(5-6):833-861
Theory and Society - The rapid growth of Uber and analogous platform companies has led to considerable scholarly interest in the phenomenon of platform labor. Scholars have taken two main... 相似文献
995.
Qualitative Sociology - Recent research on street-involved populations has documented their online presence and has highlighted the effects of their online presentations on their lives in the real... 相似文献
996.
Gary D. Clewley Kate E. Plummer Robert A. Robinson Clare H. Simm Mike P. Toms 《Urban Ecosystems》2016,19(2):535-546
The proliferation of artificial lighting at night is one of the key anthropogenic changes associated with urbanised areas as well as some non-urban areas. Disruption to natural light/dark regimes can have considerable effects on the timing of different behaviours of birds, particularly during the breeding season. However, the effect of artificial lights on the timing of behaviours during winter has received relatively little attention, despite the fact that time partitioning of foraging can have implications for avian winter survival. In this study, we assess at a landscape scale during winter, whether birds arrive at feeding stations earlier in areas with increased levels of artificial lighting using data from a citizen science project. Arrival times of the ten most commonly recorded species were associated with a combination of the density of artificial lights, temperature, rainfall and urban land cover. We found no evidence that birds advance the onset of foraging in gardens with more artificial lights nearby; contrary to our prediction, birds generally arrived later into these areas. This is possibly a response to differences in food availability or predation risk in areas with more artificial lights. We conclude that artificial light at night may not be as important for driving the timing of foraging behaviour in winter as previously thought, but it remains to be seen whether this represents a missed opportunity to extend the foraging period or an adaptive response. 相似文献
997.
Rimes Heather Nesbit Rebecca Christensen Robert K. 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2019,30(4):828-840
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This research addresses an area of philanthropic study that is becoming an increasingly important revenue source for the... 相似文献
998.
999.
Robert J. Sampson 《Social Development》2001,10(1):137-140
Books reviewed in this article:
Michael Rutter, Henri Giller and Ann Hagell, Antisocial Behaviourby Young People 相似文献
Michael Rutter, Henri Giller and Ann Hagell, Antisocial Behaviourby Young People 相似文献
1000.
De Finetti's treatise on the theory of probability begins with the provocative statement PROBABILITY DOES NOT EXIST, meaning
that probability does not exist in an objective sense. Rather, probability exists only subjectively within the minds of individuals.
De Finetti defined subjective probabilities in terms of the rates at which individuals are willing to bet money on events,
even though, in principle, such betting rates could depend on state-dependent marginal utility for money as well as on beliefs.
Most later authors, from Savage onward, have attempted to disentangle beliefs from values by introducing hypothetical bets
whose payoffs are abstract consequences that are assumed to have state-independent utility. In this paper, I argue that de
Finetti was right all along: PROBABILITY, considered as a numerical measure of pure belief uncontaminated by attitudes toward
money, does not exist. Rather, what exist are de Finetti's `previsions', or betting rates for money, otherwise known in the
literature as `risk neutral probabilities'. But the fact that previsions are not measures of pure belief turns out not to
be problematic for statistical inference, decision analysis, or economic modeling.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献