全文获取类型
收费全文 | 11467篇 |
免费 | 300篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1601篇 |
民族学 | 61篇 |
人才学 | 1篇 |
人口学 | 1027篇 |
丛书文集 | 61篇 |
理论方法论 | 1029篇 |
综合类 | 152篇 |
社会学 | 5435篇 |
统计学 | 2401篇 |
出版年
2023年 | 66篇 |
2020年 | 165篇 |
2019年 | 244篇 |
2018年 | 239篇 |
2017年 | 352篇 |
2016年 | 264篇 |
2015年 | 233篇 |
2014年 | 257篇 |
2013年 | 2149篇 |
2012年 | 331篇 |
2011年 | 305篇 |
2010年 | 270篇 |
2009年 | 229篇 |
2008年 | 328篇 |
2007年 | 333篇 |
2006年 | 256篇 |
2005年 | 245篇 |
2004年 | 219篇 |
2003年 | 216篇 |
2002年 | 252篇 |
2001年 | 266篇 |
2000年 | 237篇 |
1999年 | 206篇 |
1998年 | 179篇 |
1997年 | 181篇 |
1996年 | 166篇 |
1995年 | 164篇 |
1994年 | 132篇 |
1993年 | 171篇 |
1992年 | 177篇 |
1991年 | 168篇 |
1990年 | 165篇 |
1989年 | 145篇 |
1988年 | 159篇 |
1987年 | 164篇 |
1986年 | 121篇 |
1985年 | 121篇 |
1984年 | 157篇 |
1983年 | 148篇 |
1982年 | 125篇 |
1981年 | 95篇 |
1980年 | 120篇 |
1979年 | 136篇 |
1978年 | 107篇 |
1977年 | 111篇 |
1976年 | 103篇 |
1975年 | 111篇 |
1974年 | 85篇 |
1973年 | 70篇 |
1972年 | 75篇 |
排序方式: 共有10000条查询结果,搜索用时 819 毫秒
991.
This study is concerned with exploring pre-colonial Malay ideas about power— about relationships between people and those
who sought authority over them — and about the sources of social action and identity in pre-colonial Malay political culture.
It examines, as its principal source for information about these issues, the Sejarah Melayu (Raffles MS 18), identifying significant instances in the text of dissent and of pluralism in Malay political culture. 相似文献
992.
The current debate on U.S. housing policy focuses on the role of the government in supporting the mortgage market. Existing organizations (Fannie Mae/Freddie Mac) are in conservatorship status, and Congress is considering alternative structures and guarantees including the Johnson‐Crapo bill, to provide catastrophic insurance in support of the coverage from private companies. The resolution of this issue is complicated by the various activities involved in the issue—investment securities, public policy, macroeconomics, accounting, and insurance. This article reviews the impact of these activities on U.S. housing, with a discussion of the feasibility of creating a catastrophic insurance program similar to that of the Federal Deposit Insurance Corporation. The federal government has successfully operated catastrophic insurance programs in support of private sector initiatives, and this experience—while certainly not perfect—may be a reasonable approach to the current Fannie/Freddie dilemma. 相似文献
993.
We develop a model to understand the incidence of presidential and parliamentary institutions. Our analysis is predicated on two ideas: first, that minorities are relatively powerful in a parliamentary system compared to a presidential system, and second, that presidents have more power with respect to their own coalition than prime ministers do. These assumptions imply that while presidentialism has separation of powers, it does not necessarily have more checks and balances than parliamentarism. We show that political leaders who prefer presidentialism may be supported by their own coalition if they fear losing agenda‐setting power to another group. We argue that the model is consistent with a great deal of qualitative information about presidentialism in Africa and Latin America. (JEL: D72, P5, O1) 相似文献
994.
Anupam Agrawal Youngsoo Kim H. Dharma Kwon Suresh Muthulingam 《Production and Operations Management》2016,25(4):736-750
We investigate the optimal strategies for firms to invest in their suppliers when the benefits of such investments can spillover to other firms who also source from the same suppliers. We consider two Bayesian firms that can invest in improving the quality of their shared supplier; the firms do not have complete information on the true quality of the supplier, but they update their beliefs based on the supplier's performance. We formulate the problem as an investment game and obtain Markov perfect equilibria characterized by the investment thresholds of both firms. The equilibrium investment strategies of the two firms are characterized by a region of preemption and a region of war of attrition. We also examine how the interplay between spillover, competition, and returns from the investment at shared suppliers affect the investment threshold and the time to the leader's investment, and identify the conditions under which competition delays or hastens the first investment in a shared supplier. 相似文献
995.
Anne Hillairet de Boisferon Eve Dupierrix Paul C. Quinn Hélène Lœvenbruck David J. Lewkowicz Kang Lee Olivier Pascalis 《Infancy》2015,20(6):661-674
One of the most salient social categories conveyed by human faces and voices is gender. We investigated the developmental emergence of the ability to perceive the coherence of auditory and visual attributes of gender in 6‐ and 9‐month‐old infants. Infants viewed two side‐by‐side video clips of a man and a woman singing a nursery rhyme and heard a synchronous male or female sound track. Results showed that 6‐month‐old infants did not match the audible and visible attributes of gender, and 9‐month‐old infants matched only female faces and voices. These findings indicate that the ability to perceive the multisensory coherence of gender emerges relatively late in infancy and that it reflects the greater experience that most infants have with female faces and voices. 相似文献
996.
Self‐conscious Shyness: Growth during Toddlerhood,Strong Role of Genetics,and No Prediction from Fearful Shyness
下载免费PDF全文
![点击此处可从《Infancy》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Natalie D. Eggum‐Wilkens Kathryn Lemery‐Chalfant Nazan Aksan H. Hill Goldsmith 《Infancy》2015,20(2):160-188
Fearful and self‐conscious subtypes of shyness have received little attention in the empirical literature. Study aims included the following: (1) determining whether fearful shyness predicted self‐conscious shyness, (2) describing development of self‐conscious shyness, and (3) examining genetic and environmental contributions to fearful and self‐conscious shyness. Observed self‐conscious shyness was examined at 19, 22, 25, and 28 months in same‐sex twins (MZ = 102, DZ = 111, missing zygosity = 3 pairs). Self‐conscious shyness increased across toddlerhood, but onset was earlier than predicted by theory. Fearful shyness (observed [6 and 12 months] and parents’ reports [12 and 22 months]) was not predictive of self‐conscious shyness. Independent genetic factors made strong contributions to parent‐reported (but not observed) fearful shyness (additive genetic influence = .69 and .72 at 12 and 22 months, respectively) and self‐conscious shyness (additive genetic influence = .90 for the growth model intercept). Results encourage future investigation of patterns of change and inter‐relations in shyness subtypes. 相似文献
997.
998.
999.
1000.