全文获取类型
收费全文 | 193篇 |
免费 | 4篇 |
国内免费 | 1篇 |
专业分类
管理学 | 16篇 |
人口学 | 3篇 |
丛书文集 | 3篇 |
理论方法论 | 2篇 |
综合类 | 47篇 |
统计学 | 127篇 |
出版年
2023年 | 3篇 |
2022年 | 1篇 |
2021年 | 3篇 |
2019年 | 4篇 |
2018年 | 7篇 |
2017年 | 7篇 |
2016年 | 3篇 |
2015年 | 5篇 |
2014年 | 7篇 |
2013年 | 63篇 |
2012年 | 14篇 |
2011年 | 7篇 |
2010年 | 2篇 |
2009年 | 2篇 |
2008年 | 3篇 |
2007年 | 2篇 |
2006年 | 3篇 |
2005年 | 6篇 |
2004年 | 4篇 |
2003年 | 3篇 |
2002年 | 5篇 |
2001年 | 7篇 |
2000年 | 2篇 |
1999年 | 2篇 |
1998年 | 5篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1989年 | 4篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
排序方式: 共有198条查询结果,搜索用时 46 毫秒
11.
12.
教育是人力资本形成的重要途径,公平的教育分配对基础广泛的经济增长与贫困的减少具有显著的重要性。在教育与收入分配关系的理论与实证研究中,已有不少文献从教育存量角度对其进行探讨,然而专门从教育不平等角度进行的研究则不多。文章首先对国外有关教育不平等系数的测定方法进行总结与评述,随后从理论与实证两个层面对教育不平等与收入分配的关系研究进行评述,并在既有研究的基础上,对相关后续研究提出进一步的研究思路。 相似文献
13.
林仁炳 《浙江树人大学学报》2005,5(1):94-96
本文利用构造生成函数的方法给出常系数线性非齐次递推关系:h(n)=a1h(n-1) … akh(n-k) f(n)解的-般公式及其应用,其中f(x)为一般函数.本文的方法是对文献[1][2]中特殊形式f(x)=βnP1(n)求解的一种推广,此方法更具有一般性. 相似文献
14.
本文提出了一种更新直接消耗系数的新方法,即将修正RAS法与修正交叉熵法的更新结果进行平均的组合更新法。因为电力数据具有相对准确与及时的特点,所以本文首先提出了结合电力数据的修正RAS法与修正交叉熵法,在此基础上建立了组合更新法的数学模型,然后分别以三个实验比较了修正RAS法、修正交叉熵法以及组合更新法的效果。结果表明本组合更新法的更新精度比前两种方法都高,它是一种合理有效的更新方法。 相似文献
15.
《Journal of Statistical Computation and Simulation》2012,82(1-4):261-270
Sensitivity analysis of air scattered neutron dose at several distances from a particle accelerator with respect to shield thickness and neutron yield distributions has been carried out. We illustrate the successful use of Response Surface Methodology in studying the behaviour of the sensitivity coefficients for main effects and interaction terms. A comparison of the full six factor design and the orthogonal Central Composite Design has been made. The overhead shield is found to be the most sensitive parameter followed by the high energy part of the neutron energy distribution. 相似文献
16.
Liu Jingming 《Social Sciences in China》2013,34(2):69-90
Individual education performance is usually influenced jointly by ability and background (family background). The relative share of these two factors forms the basic grounds for judgments of educational equity. Using sheaf coefficients, we compare the influence of these two mechanisms on the distribution of access to regular first degree higher education opportunities for institutions at different levels. Our findings show that both ability and family background have a marked influence. The higher the level of the institution, the greater the ability demanded of its students. The effect of family also increases significantly at this level, but ability always has a much stronger influence than family background. It can be seen that though family background is influential in the distribution of higher education opportunities in China today, ability fundamentally remains the dominant criterion, embodying the classic features of a meritocratic society “open to talent.” 相似文献
17.
A framework for time varying parameter regression models is developed and employed in modeling and forecasting price expectations, using the Livingston data. Alternative model formulations, which include various choices for both the stochastic processes generating the varying parameters and the sets of explanatory variables, are examined and compared by using this framework. These models, some of which have appeared elsewhere and some of which are new, are estimated and used to assess the expectations formation process. 相似文献
18.
A. Ross Eckler 《The American statistician》2013,67(1):6-10
The change from the z of “Student's” 1908 paper to the t of present day statistical theory and practice is traced and documented. It is shown that the change was brought about by the extension of “Student's” approach, by R.A. Fisher, to a broader class of problems, in response to a direct appeal from “Student” for a solution to one of these problems. 相似文献
19.
20.
Serge B. Provost 《统计学通讯:理论与方法》2013,42(4):1285-1298
An alternate representation of the densities of some test statistics for the structural coefficients of the multivariate linear functional relationship model is proposed in this article. These statistics are distributed as the ratio of a linear combination of chi-square variÂtes over the root of a product of chi-square variÂtes. A computable representation of their densities has already been derived by Provost (1984) with the help of the technique of the inverse Mellin transform. The connection of the alternate representation to the densities of products of independent beta type-2 and of independent F-random variables is also discussed. 相似文献