全文获取类型
收费全文 | 830篇 |
免费 | 44篇 |
专业分类
管理学 | 117篇 |
民族学 | 8篇 |
人口学 | 57篇 |
丛书文集 | 4篇 |
理论方法论 | 123篇 |
综合类 | 7篇 |
社会学 | 467篇 |
统计学 | 91篇 |
出版年
2023年 | 8篇 |
2022年 | 7篇 |
2021年 | 13篇 |
2020年 | 32篇 |
2019年 | 25篇 |
2018年 | 27篇 |
2017年 | 52篇 |
2016年 | 37篇 |
2015年 | 28篇 |
2014年 | 42篇 |
2013年 | 126篇 |
2012年 | 33篇 |
2011年 | 36篇 |
2010年 | 21篇 |
2009年 | 32篇 |
2008年 | 27篇 |
2007年 | 32篇 |
2006年 | 24篇 |
2005年 | 23篇 |
2004年 | 23篇 |
2003年 | 21篇 |
2002年 | 27篇 |
2001年 | 18篇 |
2000年 | 14篇 |
1999年 | 22篇 |
1998年 | 10篇 |
1997年 | 15篇 |
1996年 | 7篇 |
1995年 | 8篇 |
1994年 | 6篇 |
1993年 | 10篇 |
1992年 | 10篇 |
1991年 | 3篇 |
1990年 | 9篇 |
1989年 | 3篇 |
1988年 | 3篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 4篇 |
1984年 | 7篇 |
1983年 | 3篇 |
1982年 | 4篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 3篇 |
1978年 | 4篇 |
1977年 | 1篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1971年 | 1篇 |
排序方式: 共有874条查询结果,搜索用时 0 毫秒
871.
John M. Maheu Jonathan J. Reeves Xuan Xie 《Australian & New Zealand Journal of Statistics》2010,52(2):221-237
Recent advances in financial econometrics have allowed for the construction of efficient ex post measures of daily volatility. This paper investigates the importance of instability in models of realised volatility and their corresponding forecasts. Testing for model instability is conducted with a subsampling method. We show that removing structurally unstable data of a short duration has a negligible impact on the accuracy of conditional mean forecasts of volatility. In contrast, it does provide a substantial improvement in a model's forecast density of volatility. In addition, the forecasting performance improves, often dramatically, when we evaluate models on structurally stable data. 相似文献
872.
□ This paper derives a measure of central counterparty (CCP) clearing-network risk that is based on the probability that the maximum exposure (the N-th order statistic) of a CCP to an individual general clearing member is large. Our analytical derivation of this probability uses the theory of Laplace asymptotics, which is related to the large deviations theory of rare events. The theory of Laplace asymptotics is an area of applied probability that studies the exponential decay rate of certain probabilities and is often used in the analysis of the tails of probability distributions. We show that the maximum-exposure probability depends on the topology, or structure, of the clearing network. We also derive a CCP's Maximum-Exposure-at-Risk, which provides a metric for evaluating the adequacy of the CCP's and general clearing members’ loss-absorbing financial resources during rare but plausible market conditions. Based on our analysis, we provide insight into how clearing-network structure can affect the maximum-exposure risk of a CCP and, thereby, network stability. We show that the rate function (the exponential decay rate) of the maximum-exposure probability is informative and can be used to compare the relative maximum-exposure risks across different network configurations. 相似文献
873.
874.