全文获取类型
收费全文 | 26457篇 |
免费 | 491篇 |
国内免费 | 15篇 |
专业分类
管理学 | 3577篇 |
民族学 | 193篇 |
人才学 | 2篇 |
人口学 | 3743篇 |
丛书文集 | 172篇 |
理论方法论 | 1998篇 |
综合类 | 986篇 |
社会学 | 12923篇 |
统计学 | 3369篇 |
出版年
2023年 | 86篇 |
2021年 | 127篇 |
2020年 | 261篇 |
2019年 | 323篇 |
2018年 | 2002篇 |
2017年 | 2164篇 |
2016年 | 1434篇 |
2015年 | 374篇 |
2014年 | 420篇 |
2013年 | 2712篇 |
2012年 | 868篇 |
2011年 | 1670篇 |
2010年 | 1472篇 |
2009年 | 1147篇 |
2008年 | 1303篇 |
2007年 | 1480篇 |
2006年 | 488篇 |
2005年 | 656篇 |
2004年 | 615篇 |
2003年 | 540篇 |
2002年 | 455篇 |
2001年 | 422篇 |
2000年 | 363篇 |
1999年 | 335篇 |
1998年 | 250篇 |
1997年 | 220篇 |
1996年 | 223篇 |
1995年 | 221篇 |
1994年 | 207篇 |
1993年 | 207篇 |
1992年 | 228篇 |
1991年 | 234篇 |
1990年 | 221篇 |
1989年 | 196篇 |
1988年 | 229篇 |
1987年 | 236篇 |
1986年 | 171篇 |
1985年 | 192篇 |
1984年 | 217篇 |
1983年 | 203篇 |
1982年 | 177篇 |
1981年 | 155篇 |
1980年 | 138篇 |
1979年 | 155篇 |
1978年 | 132篇 |
1977年 | 107篇 |
1976年 | 125篇 |
1975年 | 135篇 |
1974年 | 102篇 |
1972年 | 77篇 |
排序方式: 共有10000条查询结果,搜索用时 439 毫秒
91.
Starting with its early twentieth century origins, the development of Labor Economics is traced to the present. We describe
an intellectual revolution in which an earlier tra-dition that focused primarily on the institution of the labor union has
been replaced by a perspective that emphasizes the various roles played by labor markets in an eco-nomic system. That earlier
tradition contained very significant ideological elements, whereas its successor deals much more with the world of ideas.
In the course of the debate, which still continues, ideas triumphed over ideology and created modern Labor Economics. 相似文献
92.
Michaela L. Z. Farber Elizabeth Timberlake Helen Patricia Mudd Linda Cullen 《Child and Adolescent Social Work Journal》2003,20(3):175-196
To prepare for the complexities of family formation, 78 prospective adoptive parents participated in Pre-Adopt, a psychosocial educational orientation program offered by one private nonprofit agency. The five-session curriculum included an overview of adoption policies and procedures, discussion of the child placement process, exploration of couples' adoption concerns and expectations about child characteristics, information about adoption laws and birth-parent/child searches, and examination of anticipatory fantasies about birth parents. Program evaluation yielded statistically significant and clinically meaningful findings about changes in emotional readiness to adopt, parenting knowledge, and satisfaction with group participation, adoption policies and agency practices. Practice implications are considered. 相似文献
93.
94.
95.
We show that Bayesian ex post aggregation is unstable with respect to refinements. Suppose a group of Bayesians use ex post
aggregation. Since it is a joint problem, each agent's problem is captured by the same model, but probabilities and utilities
may vary. If they analyze the same situation in more detail, their refined analysis should preserve their preferences among
acts. However, ex post aggregation could bring about a preference reversal on the group level. Ex post aggregation thus depends
on how much information is used and may keep oscillating (“flipping”) as one keeps adding more information.
Received: 16 April 2002/Accepted: 27 May 2002 相似文献
96.
Koji Takamiya 《Social Choice and Welfare》2003,20(1):77-83
In a general model of indivisible good allocation, S?nmez (1999) established that, whenever the core is nonempty for each
preference profile, if an allocation rule is strategy-proof, individually rational and Pareto optimal, then the rule is a
selection from the core correspondence, and the core correspondence must be essentially single-valued. This paper studies
the converse claim of this result. I demonstrate that whenever the preference domain satisfies a certain condition of `richness',
if the core correspondence is essentially single-valued, then any selection from the core correspondence is strategy-proof
(even weakly coalition strategy-proof, in fact). In particular, on the domain of preferences in which each individual has
strict preferences over his own assignments and there is no consumption externality, such an allocation rule is coalition
strategy-proof. And on this domain, coalition strategy-proofness is equivalent to Maskin monotonicity, an important property
in implementation theory.
Received: 22 February 2000/Accepted: 22 January 2002
I am grateful to Ryo-ichi Nagahisa, Shinji Ohseto, Hiroshi Ono, Tomoichi Shinotsuka and Shigehiro Serizawa for valuable comments.
And I am indebted to two anonymous referees for useful suggestions. Especially, I owe the present proof of Lemma 2 to one
referee. I also thank Yukihiko Funaki, Atsushi Kajii, Mamoru Kaneko, Eiichi Miyagawa, Tatsuyoshi Saijo, Manimay Sengupta,
Yves Sprumont, Yoshikatsu Tatamitani, Manabu Toda, Takashi Ui, Takehiko Yamato, Naoki Yoshihara and the participants of the
seminars in Hokkaido University, Kansai University, ISER (Osaka University), Otaru University of Commerce and Tsukuba University.
All errors are my own responsiblity. 相似文献
97.
Laurie MacKinnon Kerrie James 《Australian and New Zealand Journal of Family Therapy》1992,13(2):59-71
This paper, the third in a series concerned with family therapy in cases involving children at risk of abuse, describes an approach to maximising parents' interest and commitment to therapy. After overviewing the difficulties faced by therapists in working with parents who are notorious for their ‘resistance’, we provide guidelines for minimising the negative consequences of notification and for constructing therapeutic leverage in order to elicit and maintain parents' motivation throughout the course of therapy. 相似文献
98.
Stolzenberg Lisa D'Alessio Stewart J. Rivers James E. Newell Augusto L. 《Social indicators research》2003,61(1):19-57
Determining the size and demographiccharacteristics of substance abuse populationsis extremely important for implementing publicpolicies aimed at the control of substanceabuse. Such information not only assists in theallocation of limited treatment resources bythe state, but also in the monitoring ofsubstance abuse trends over time and in theevaluation of innovative policy initiatives. Inthis study, we develop three composite measuresof treatment need. We then use these measuresto estimate treatment need for alcohol abuseand for controlled substance abuse within eachof Florida's 67 counties. This study providesan important empirical component of communityplanning, quantifying and, to a limited degree,specifying the level of need for the substanceabuse treatment of community residents. Anadditional benefit is the development of a costeffective and unobtrusive methodology fordetermining empirically when levels of need arechanging so that treatment levels can beadjusted accordingly. With proper use,policymakers can readily employ the methodologydeveloped in this study in Florida andelsewhere to make better-informed decisions inthe allocation of finite substance abusetreatment resources. 相似文献
99.
100.