全文获取类型
收费全文 | 23436篇 |
免费 | 219篇 |
国内免费 | 2篇 |
专业分类
管理学 | 3529篇 |
民族学 | 145篇 |
人才学 | 2篇 |
人口学 | 3508篇 |
丛书文集 | 57篇 |
理论方法论 | 1823篇 |
综合类 | 416篇 |
社会学 | 11047篇 |
统计学 | 3130篇 |
出版年
2020年 | 183篇 |
2019年 | 228篇 |
2018年 | 1849篇 |
2017年 | 1914篇 |
2016年 | 1325篇 |
2015年 | 245篇 |
2014年 | 325篇 |
2013年 | 2266篇 |
2012年 | 659篇 |
2011年 | 1435篇 |
2010年 | 1284篇 |
2009年 | 1033篇 |
2008年 | 1121篇 |
2007年 | 1281篇 |
2006年 | 358篇 |
2005年 | 577篇 |
2004年 | 600篇 |
2003年 | 499篇 |
2002年 | 421篇 |
2001年 | 306篇 |
2000年 | 293篇 |
1999年 | 270篇 |
1998年 | 247篇 |
1997年 | 221篇 |
1996年 | 240篇 |
1995年 | 219篇 |
1994年 | 225篇 |
1993年 | 225篇 |
1992年 | 215篇 |
1991年 | 237篇 |
1990年 | 229篇 |
1989年 | 202篇 |
1988年 | 230篇 |
1987年 | 187篇 |
1986年 | 186篇 |
1985年 | 202篇 |
1984年 | 202篇 |
1983年 | 184篇 |
1982年 | 153篇 |
1981年 | 125篇 |
1980年 | 136篇 |
1979年 | 154篇 |
1978年 | 132篇 |
1977年 | 116篇 |
1976年 | 125篇 |
1975年 | 95篇 |
1974年 | 104篇 |
1973年 | 81篇 |
1971年 | 65篇 |
1970年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
Sets of alternatives as Condorcet winners 总被引:1,自引:0,他引:1
We characterize sets of alternatives which are Condorcet winners according to preferences over sets of alternatives, in terms
of properties defined on preferences over alternatives. We state our results under certain preference extension axioms which,
at any preference profile over alternatives, give the list of admissible preference profiles over sets of alternatives. It
turns out to be that requiring from a set to be a Condorcet winner at every admissible preference profile is too demanding,
even when the set of admissible preference profiles is fairly narrow. However, weakening this requirement to being a Condorcet
winner at some admissible preference profile opens the door to more permissive results and we characterize these sets by using
various versions of an undomination condition. Although our main results are given for a world where any two sets – whether
they are of the same cardinality or not – can be compared, the case for sets of equal cardinality is also considered.
Received: 15 March 2001/Accepted: 31 May 2002
This paper was written while Barış Kaymak was a graduate student in Economics at Boğazi?i University. We thank ?ağatay Kayı
and İpek ?zkal-Sanver who kindly agreed to be our initial listeners. The paper has been presented at the Economic Theory seminars
of Bilkent, Ko? and Sabancı Universities as well as at the Fifth Conference of the Society for the Advancement of Economic
Theory, July 2001, Ischia, Italy and at the 24th Bosphorus Workshop on Economic Design, August 2001, Bodrum, Turkey. We thank Fuad Aleskerov, İzak Atiyas, ?zgür Kıbrıs, Semih
Koray, Gilbert Laffond, Bezalel Peleg, Murat Sertel, Tayfun S?nmez, Utku ünver and all the participants. Remzi Sanver acknowledges
partial financial support from İstanbul Bilgi University and the Turkish Academy of Sciences and thanks Haluk Sanver and Serem
Ltd. for their continuous moral and financial support. Last but not the least, we thank Carmen Herrero and two anonymous referees.
Of course we are the sole responsible for all possible errors. 相似文献
112.
We present a case study based on a depression study that will illustrate the use of Bayesian statistics in the economic evaluation of cost‐effectiveness data, demonstrate the benefits of the Bayesian approach (whilst honestly recognizing any deficiencies) with respect to frequentist methods, and provide details of using the methods, including computer code where appropriate. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
113.
114.
Recent social changes have made husbands' emotional investments and wives' perceptions of equity in the division of housework crucial for women's marital happiness. But wives are also happiest in their marriages when they share a strong normative commitment to lifelong marriage with their husbands and when their husbands take the lead in breadwinning. Thus our research suggests that elements of the new and the old promote marital happiness among contemporary wives. 相似文献
115.
W. Bennett 《Information, Communication & Society》2003,6(2):143-168
Many observers doubt the capacity of digital media to change the political game. The rise of a transnational activism that is aimed beyond states and directly at corporations, trade and development regimes offers a fruitful area for understanding how communication practices can help create a new politics. The Internet is implicated in the new global activism far beyond merely reducing the costs of communication, or transcending the geographical and temporal barriers associated with other communication media. Various uses of the Internet and digital media facilitate the loosely structured networks, the weak identity ties, and the patterns of issue and demonstration organizing that define a new global protest politics. Analysis of various cases shows how digital network configurations can facilitate: permanent campaigns; the growth of broad networks despite relatively weak social identity and ideology ties; transformation of individual member organizations and whole networks; and the capacity to communicate messages from desktops to television screens. The same qualities that make these communication-based politics durable also make them vulnerable to problems of control, decision-making and collective identity. 相似文献
116.
117.
Constrained allocation problems with single-peaked preferences: An axiomatic analysis 总被引:1,自引:0,他引:1
Özgür Kıbrıs 《Social Choice and Welfare》2003,20(3):353-362
We introduce a new class of problems that contains two existing classes: allocation problems with single-peaked preferences
and bankruptcy problems. On this class, we analyze the implications of well-known properties such as Pareto optimality, strategy-proofness,
resource-monotonicity, no-envy, equal treatment of equals, and two new properties we introduce, hierarchical no-envy and independence
of nonbinding constraints. Unlike earlier literature, we consider rules that allow free-disposability. We present characterizations
of a rule we introduce on this domain. We relate this rule to well-known rules on the aforementioned subdomains. Based on
this relation, we present a characterization of a well-known bankruptcy rule called the constrained equal awards rule.
Received: 22 June 2000/Accepted: 21 March 2002
This paper is based on the first chapter of my Ph.D. thesis submitted to the University of Rochester. I wish to thank my
advisor, William Thomson, for helpful comments and suggestions. 相似文献
118.
119.
120.
The liberalization of international financial flows and foreign direct investment has induced countries to use diverse measures to attract inflow of foreign capital and foreign direct investment, which is expected to have a positive effect on the growth of GDP and thus a positive effect on social welfare. Tax exemption, reduction of tax rate, tax holiday, or diverse subsidies are some of the most important measures used. In this paper we study international tax cooperation, i.e., countries change and especially reduce tax rate for corporate income or for asset revenues to attract inflow of foreign direct investment. Both theoretical and empirical studies have shown the sensibility of foreign direct investment decision with respect to tax rate differences between home countries and host countries. In general, more inflow of foreign direct investment can be expected if the tax rate of the home country is lower than that of foreign countries. This is the main reason for international tax cooperation. In this paper we propose a simple model to prove the sub-optimal Nash non cooperative solution in a two-country tax-competition game. The model shows that international tax cooperation can improve welfare of the participating countries. How to reach a cooperative solution for an international tax competition game (ITCG) is therefore an important issue for further discussions and studies. International institutions can play a crucial role to reach international tax cooperation or international tax harmonization. 相似文献