全文获取类型
收费全文 | 549篇 |
免费 | 37篇 |
国内免费 | 3篇 |
专业分类
管理学 | 32篇 |
民族学 | 1篇 |
人才学 | 2篇 |
人口学 | 17篇 |
丛书文集 | 57篇 |
理论方法论 | 23篇 |
综合类 | 250篇 |
社会学 | 54篇 |
统计学 | 153篇 |
出版年
2022年 | 4篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 12篇 |
2018年 | 13篇 |
2017年 | 14篇 |
2016年 | 12篇 |
2015年 | 20篇 |
2014年 | 38篇 |
2013年 | 56篇 |
2012年 | 38篇 |
2011年 | 45篇 |
2010年 | 37篇 |
2009年 | 35篇 |
2008年 | 29篇 |
2007年 | 23篇 |
2006年 | 26篇 |
2005年 | 16篇 |
2004年 | 13篇 |
2003年 | 7篇 |
2002年 | 28篇 |
2001年 | 18篇 |
2000年 | 10篇 |
1999年 | 4篇 |
1998年 | 4篇 |
1997年 | 5篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 5篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1986年 | 1篇 |
1985年 | 12篇 |
1984年 | 6篇 |
1983年 | 8篇 |
1982年 | 7篇 |
1981年 | 7篇 |
1980年 | 6篇 |
1979年 | 8篇 |
1978年 | 7篇 |
1977年 | 1篇 |
排序方式: 共有589条查询结果,搜索用时 31 毫秒
371.
Francesco Caselli Wilbur John Coleman 《Journal of the European Economic Association》2013,11(Z1):161-192
When considering engaging in conflict to secure control of a resource, a group needs to predict the amount of post‐conflict leakage due to infiltration by members of losing groups. We use this insight to explain why conflict often takes place along ethnic lines, why some ethnic groups are more often in conflict than others (and some never are), and why the same groups are sometimes in conflict and sometimes at peace. In our theory ethnic markers help enforce group membership: in homogeneous societies members of the losing group can more easily pass themselves as members of the winning group, and this reduces the chances of conflict as an equilibrium outcome. We derive a number of implications of the model relating social, political, and economic indicators such as the incidence of conflict, the distance between ethnic groups, group sizes, income inequality, and expropriable resources. One of the insights is that the incidence of ethnic conflict is nonmonotonic in expropriable resources as a fraction of total resources, with a low incidence for either low or high values. We use the model’s predictions to interpret historical examples of conflict associated with skin pigmentation, body size, language, and religion. 相似文献
372.
述宾短语“看 NV 不 V”格式是由一个“看 N”加上一个正反问的常用格式“V 不 V”构成的,多出现在口语和白话文小说中。就笔者目前搜集的资料来看,前人已对其做过颇多的研究分析,并取得了一定的成果。在本文笔者将主要在前人研究的基础上对“看 NV 不 V”格式中的积累分布和语用含义进行探究。 相似文献
373.
《Journal of Statistical Computation and Simulation》2012,82(2-4):197-213
In the analysis of clinical trials of combination therapies, the min test is often used to demonstrate a combination therapy's superiority to its components. Although uniformly most powerful within a class of monotone tests, this test is excessively conservative with low power at certain alternatives. This paperdemonstrates that more powerful tests may be found outside of this class. Some such alternative tests are suggested and compared with the min tests on the basis of their actual significance levels and powers. The proposed tests are observed to be less conservative and uniformly more powerful than the min test. 相似文献
374.
375.
In this article, we propose a class of mixed models for recurrent event data. The new models include the proportional rates model and Box–Cox transformation rates models as special cases, and allow the effects of covariates on the rate functions of counting processes to be proportional or convergent. For inference on the model parameters, estimating equation approaches are developed. The asymptotic properties of the resulting estimators are established and the finite sample performance of the proposed procedure is evaluated through simulation studies. A real example with data taken from a clinic study on chronic granulomatous disease (CGD) is also illustrated for the use of the proposed methodology. The Canadian Journal of Statistics 39: 578–590; 2011. © 2011 Statistical Society of Canada 相似文献
376.
Jesús Fernndez‐Villaverde Jeremy Greenwood Nezih Guner 《Journal of the European Economic Association》2014,12(1):25-61
Societies socialize children about sex. This is done in the presence of peer‐group effects, which may encourage undesirable behavior. Parents want the best for their children. Still, they weigh the marginal gains from socializing their children against its costs. Churches and states may stigmatize sex, both because of a concern about the welfare of their flocks and the need to control the cost of charity associated with out‐of‐wedlock births. Modern contraceptives have profoundly affected the calculus for instilling sexual mores. As contraception improves there is less need for parents, churches, and states to inculcate sexual mores. Technology affects culture. 相似文献
377.
. The history of preindustrial Europe provides an opportunity to examine the causes and consequences of population change
at a macro level. However, serious statistical problems arise from the endogeneity of all observed variables in a Malthusian
system (fertility, mortality, population size, and real wages), and from unobserved influences such as shifts in the demand
for labor and variations in health. These problems have undermined both informal inference from the data and more complex
econometric investigations. This paper takes a new statistical approach, finding the maximum likelihood estimate of a state
space representation of the Malthusian system by repeated application of Kalman filter methods, using annual data from England,
1540 to 1870. The new estimates confirm some findings of the earlier literature and contradict others. Some variables are
estimated for the first time. Implications are discussed for the interpretation of English economic-demographic history.
Received: 3 January 2000/Accepted: 22 January 2001 相似文献
378.
379.
380.
Sung Y. Kwack 《Journal of Policy Modeling》1983,5(3):443-459
The delay of strong economic recovery by industrialized nations, slowed world export growth, and higher interest rates have worsened the financial situation of a number of developing countries which have relied on external borrowings to sustain current account deficits and protect economic development. Recently, well-publicized concerns over the ability to these countries to repay their considerable debt burden have been raised. To shed light on these concerns, the paper focuses on Korea—one of the heavier debt-holding countries. It describes the process through which Korea has acquired its external debt over the past decade, assesses the trends in its debt burden, and presents prospects for the period 1982–1986. Using the Korean experience, the paper shows that the most common indicators used for evaluating foreign debt burden, such as the long-term service ratio, need to be supplemented by other measurements. In a world economy characterized by short-term debts with variable interest rates, the paper suggests that an important tool in analyzing the external debt burden should be the short-term debt burden. 相似文献