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排序方式: 共有120条查询结果,搜索用时 250 毫秒
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In this article we develop a nonparametric estimator for the local average response of a censored dependent variable to endogenous regressors in a nonseparable model where the unobservable error term is not restricted to be scalar and where the nonseparable function need not be monotone in the unobservables. We formalize the identification argument put forward in Altonji, Ichimura, and Otsu (2012), construct a nonparametric estimator, characterize its asymptotic property, and conduct a Monte Carlo investigation to study its small sample properties. Identification is constructive and is achieved through a control function approach. We show that the estimator is consistent and asymptotically normally distributed. The Monte Carlo results are encouraging. 相似文献
3.
We extend the average derivatives estimator to the case of functionally dependent regressors. We show that the proposed estimator is consistent and has a limiting normal distribution. A consistent covariance matrix estimator for the proposed estimator is provided. 相似文献
4.
Incomplete moments are used to characterize income inequality and provide the basis for interdistributional Lorenz curves. Four measures of interdistributional inequality are considered and seen to be related to an interdistributional welfare interpretation. Based upon these measures, there has been a significant secular decline in interdistributional inequality between blacks and whites over the past 30 years. 相似文献
5.
D. B. Holiday 《统计学通讯:理论与方法》2013,42(6):2107-2124
A kernel estimator of a derivative of arbitrary order of a nonparametric average population curve is considered for a correlated-errors model with balanced replicate measurements at each design point. Asymptotic expansions of the mean squared error are derived for two classes of correlation functions in the model. Consistency, choice of smoothing parameter, and rates of convergence are examined for the important special cases of estimating the first and second derivatives. 相似文献
6.
吴克炎 《辽宁工程技术大学学报(社会科学版)》2008,10(4):417-420
针对英语后缀派生词各类丰富功能尚未系统开发的现状,深入分析了体现英语语言特征的后缀派生词的生成及其语法、语义、修辞等功能,认为对其生成与功能应用的分析有助于更科学使用后缀派生词,提高表达效果,有助于促进二语学习者产出性词汇能力的提高,有助于做好相关翻译工作。 相似文献
7.
信用衍生品对金融稳定性的影响及政策建议 总被引:1,自引:0,他引:1
陈秀花 《辽宁大学学报(哲学社会科学版)》2006,34(5):128-132
信用衍生品在转移银行业信用风险的同时,又会通过各种途径对金融体系的稳定性造成一定程度的负面影响,本文主要研究信用衍生品对金融体系稳定性的负面影响并提出相应的政策建议。 相似文献
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浮动汇率制及全球经济一体化加剧了人民币汇率波动,使国际贸易汇率风险凸显;目前中国一些跨国公司正使用外汇衍生品管控汇率风险暴露.国内对外汇衍生品能否降低企业的外汇风险暴露的理论研究相对较少,同时个别外汇衍生品风险事件引起了业界对其使用效果的广泛关注.文章以中国2007-2015年221家非金融类上市跨国公司为样本,运用Jorion两因素模型,研究样本公司股票收益率对汇率波动的敏感程度,以此作为其外汇风险暴露的大小.文章通过非平衡面板数据模型分析了外汇衍生品使用与跨国公司外汇风险暴露的关系,结果表明:中国每年平均有11.7%的跨国公司面临显著的外汇风险暴露;外汇衍生品使用可以有效降低中国跨国公司的汇率风险. 相似文献
10.
L. Yang & R. Tschernig 《Journal of the Royal Statistical Society. Series B, Statistical methodology》1999,61(4):793-815
The existence and properties of optimal bandwidths for multivariate local linear regression are established, using either a scalar bandwidth for all regressors or a diagonal bandwidth vector that has a different bandwidth for each regressor. Both involve functionals of the derivatives of the unknown multivariate regression function. Estimating these functionals is difficult primarily because they contain multivariate derivatives. In this paper, an estimator of the multivariate second derivative is obtained via local cubic regression with most cross-terms left out. This estimator has the optimal rate of convergence but is simpler and uses much less computing time than the full local estimator. Using this as a pilot estimator, we obtain plug-in formulae for the optimal bandwidth, both scalar and diagonal, for multivariate local linear regression. As a simpler alternative, we also provide rule-of-thumb bandwidth selectors. All these bandwidths have satisfactory performance in our simulation study. 相似文献