全文获取类型
收费全文 | 194篇 |
免费 | 6篇 |
专业分类
管理学 | 13篇 |
人口学 | 1篇 |
丛书文集 | 5篇 |
理论方法论 | 6篇 |
综合类 | 28篇 |
社会学 | 1篇 |
统计学 | 146篇 |
出版年
2023年 | 2篇 |
2020年 | 2篇 |
2019年 | 2篇 |
2018年 | 1篇 |
2017年 | 8篇 |
2016年 | 3篇 |
2015年 | 3篇 |
2014年 | 7篇 |
2013年 | 53篇 |
2012年 | 16篇 |
2011年 | 2篇 |
2010年 | 6篇 |
2009年 | 7篇 |
2008年 | 12篇 |
2007年 | 8篇 |
2006年 | 5篇 |
2005年 | 7篇 |
2004年 | 7篇 |
2003年 | 3篇 |
2002年 | 5篇 |
2001年 | 4篇 |
2000年 | 6篇 |
1999年 | 6篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 3篇 |
排序方式: 共有200条查询结果,搜索用时 80 毫秒
191.
本文经初步研究得出在我国社会主义市场经济中,在一定的条件下,既可使社会福利达到最大,又可使消费者的个人效用达到最优的结论。建立了相应的数学模型,给出了相应的经济含义及分析。并指出其社会福利最大点将优于完全竞争条件下的福利最大点。 相似文献
192.
The Construction of Optimal Imcomplete Block Designs When Observations Within a Block are Correlated
An algorithmic method is described for the construction of optimal incomplete block designs when a known correlation structure is assumed for observations from plots in the same block. The method is applicable to a wide class of designs and correlation structures. Some examples are given to illustrate the procedure. 相似文献
193.
针对矩阵风险,给出了矩阵估计量的多种优良性准则.在这些准则下,得到了带有线性约束的多元回归系数的线性估计是可容许的充要条件,进而由于不同的线性约束所引起的可容许的估计类的不同,我们得到了不同的估计类之间的一种刻划。 相似文献
194.
Pranab Kumar Sen 《Journal of statistical planning and inference》1984,9(3):355-366
Conditions on the hazard functions under the usual log-rank test remains locally optimal for the Cox regression model under random censoring (withdrawal) are examined. In the light of these, the asymptotic efficiency results pertaining to the Cox partial likelihood statistic and the log-rank statistic are studied. 相似文献
195.
THOMAS BAUDIN 《Mathematical Population Studies》2013,20(2):94-113
In a model of endogenous fertility where individuals know the probability of child survival but not the final number of survivors, parents do not always formulate a precautionary demand for children. For some utility functions, parents have fewer children than what they would have in a situation in which the number of survivors is known earlier. The properties of the optimal economic policy depend on the degree to which the social welfare function takes ignorance into account. If social welfare is evaluated after parents know how many children survived, the parental response to uncertainty is socially inefficient. Individual decisions then should be corrected through tax or transfer on both births and education. This property helps determine the optimal public response to mortality crisis in the presence of educational externalities. 相似文献
196.
Tachen Liang 《统计学通讯:理论与方法》2013,42(8):1409-1428
This paper deals with an empirical Bayes testing problem for the mean lifetimes of exponential distributions with unequal sample sizes. We study a method to construct empirical Bayes tests {δ* nl + 1,n }∞ n = 1 for the sequence of the testing problems. The asymptotic optimality of {δ* nl + 1,n }∞ n = 1 is studied. It is shown that the sequence of empirical Bayes tests {δ* nl + 1,n }∞ n = 1 is asymptotically optimal, and its associated sequence of regrets converges to zero at a rate (ln n)4M?1/n, where M is an upper bound of sample sizes. 相似文献
197.
Re-Bin Rau 《统计学通讯:理论与方法》2013,42(6):871-887
A batch of M items is inspected for defectives. Suppose there are d defective items in the batch. Let d 0 be a given standard used to evaluate the quality of the population where 0 < d 0 < M. The problem of testing H 0: d < d 0 versus H 1: d ≥ d 0 is considered. It is assumed that past observations are available when the current testing problem is considered. Accordingly, the empirical Bayes approach is employed. By using information obtained from the past data, an empirical Bayes two-stage testing procedure is developed. The associated asymptotic optimality is investigated. It is proved that the rate of convergence of the empirical Bayes two-stage testing procedure is of order O (exp(? c? n)), for some constant c? > 0, where n is the number of past observations at hand. 相似文献
198.
Wayne R. Wesley James R. Simpson Peter A. Parker Joseph J. Pignatiello Jr. 《统计学通讯:理论与方法》2013,42(13):2251-2266
The impact of restricted randomization on the information matrix has created challenges for the computation of design optimality criteria. This article focuses on the computation of the maximum and minimum prediction variance for Central Composite (CCD) and Box–Behnken (BBD) split plot designs (SPD). The approach is to analytically determine the exact maximum and minimum prediction variance for both spherical and cuboidal second-order SPD. A particular feature of these analytical functions is that they are functions of the design parameters. Finally, the application of these analytical functions is demonstrated for a CCD SPD. 相似文献
199.
使用关于集值映射的择一定理,在锥一次类凸背景下,对二层多目标规划的最优性条件进行讨论,获得了几个必要条件和充分条件。 相似文献
200.
We analyze Poisson regression when covariates contain measurement errors and when multiple potential instrumental variables are available. Without empirical knowledge to select the most suitable variable as an instrument, we propose a novel model-averaging approach to resolve this issue. We prescribe an implementation and establish its optimality in terms of minimizing prediction risk. We further show that, as long as one model is correctly specified among all potential instrumental variable models, our method will lead to consistent prediction. The performance of our method is illustrated through simulations and a movie sales example. 相似文献