全文获取类型
收费全文 | 3339篇 |
免费 | 134篇 |
专业分类
管理学 | 380篇 |
民族学 | 51篇 |
人才学 | 1篇 |
人口学 | 370篇 |
丛书文集 | 4篇 |
理论方法论 | 306篇 |
综合类 | 76篇 |
社会学 | 1582篇 |
统计学 | 703篇 |
出版年
2024年 | 4篇 |
2023年 | 54篇 |
2022年 | 43篇 |
2021年 | 68篇 |
2020年 | 150篇 |
2019年 | 167篇 |
2018年 | 268篇 |
2017年 | 293篇 |
2016年 | 229篇 |
2015年 | 131篇 |
2014年 | 168篇 |
2013年 | 578篇 |
2012年 | 259篇 |
2011年 | 129篇 |
2010年 | 115篇 |
2009年 | 107篇 |
2008年 | 102篇 |
2007年 | 78篇 |
2006年 | 74篇 |
2005年 | 68篇 |
2004年 | 47篇 |
2003年 | 49篇 |
2002年 | 41篇 |
2001年 | 34篇 |
2000年 | 21篇 |
1999年 | 18篇 |
1998年 | 18篇 |
1997年 | 17篇 |
1996年 | 19篇 |
1995年 | 13篇 |
1994年 | 14篇 |
1993年 | 6篇 |
1992年 | 12篇 |
1991年 | 8篇 |
1990年 | 8篇 |
1989年 | 8篇 |
1988年 | 7篇 |
1987年 | 6篇 |
1986年 | 5篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1979年 | 3篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1973年 | 4篇 |
1971年 | 3篇 |
1968年 | 2篇 |
1967年 | 1篇 |
排序方式: 共有3473条查询结果,搜索用时 15 毫秒
1.
Generally, the semiclosed-form option pricing formula for complex financial models depends on unobservable factors such as stochastic volatility and jump intensity. A popular practice is to use an estimate of these latent factors to compute the option price. However, in many situations this plug-and-play approximation does not yield the appropriate price. This article examines this bias and quantifies its impacts. We decompose the bias into terms that are related to the bias on the unobservable factors and to the precision of their point estimators. The approximated price is found to be highly biased when only the history of the stock price is used to recover the latent states. This bias is corrected when option prices are added to the sample used to recover the states' best estimate. We also show numerically that such a bias is propagated on calibrated parameters, leading to erroneous values. The Canadian Journal of Statistics 48: 8–35; 2020 © 2019 Statistical Society of Canada 相似文献
2.
Laurent Gardes Stéphane Girard Gilles Stupfler 《Scandinavian Journal of Statistics》2020,47(3):922-949
The conditional tail expectation (CTE) is an indicator of tail behavior that takes into account both the frequency and magnitude of a tail event. However, the asymptotic normality of its empirical estimator requires that the underlying distribution possess a finite variance; this can be a strong restriction in actuarial and financial applications. A valuable alternative is the median shortfall (MS), although it only gives information about the frequency of a tail event. We construct a class of tail Lp-medians encompassing the MS and CTE. For p in (1,2), a tail Lp-median depends on both the frequency and magnitude of tail events, and its empirical estimator is, within the range of the data, asymptotically normal under a condition weaker than a finite variance. We extrapolate this estimator and another technique to extreme levels using the heavy-tailed framework. The estimators are showcased on a simulation study and on real fire insurance data. 相似文献
3.
Existence and Nash implementation of efficient sharing rules for a commonly owned technology 总被引:2,自引:0,他引:2
Suppose that a group of individuals owns collectively a technology which produces a consumption good by means of a (possibly
heterogeneous) input. A sharing rule associates input contributions with a vector of consumptions that are technologically
feasible. We show that the set of allocations obtained by any continuous sharing rule contains Pareto efficient allocations.
We also present a mechanism that implements in Nash equilibrium the Pareto efficient allocations contained in an arbitrary
sharing rule.
Received: 29 June 1998/Accepted: 15 November 2000 相似文献
4.
5.
María del Carmen Méndez García 《Intercultural Education》2005,16(1):57-68
The sociocultural content of foreign language textbooks has become a concern of scholars and practitioners owing to the fact that the traditional emphasis on purely linguistic issues has been expanded to embrace a language in context approach. This paper studies the English‐speaking communities that are described in English language teaching textbooks marketed in Spain. It examines to what extent an international and/or intercultural approach is a constituent element in their design. 相似文献
6.
7.
8.
Andrée Coulombe M.Ps. Robert Ladouceur Ph.D. Raymond Desharnais Ph.D. Jean Jobin Ph.D. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1992,8(3):235-244
This study investigated the relationship between the level of arousal (Heart Rate) and the number of erroneous perceptions among video poker players. Twelve regular and twelve occasional gamblers participated in a gambling session conducted in a natural environment. It was hypothesised that 1) a significant positive correlation would be observed between arousal and the number of erroneous verbalizations, 2) regular players would show a higher level of arousal than occasional players, and 3) they would emit more erroneous verbalizations. Results showed that hypotheses one and three were confirmed. Theoretical and practical implications of these results for the psychology of gambling are discussed.This study was supported by a grant from Loto-Québec. 相似文献
9.
10.