全文获取类型
收费全文 | 1175篇 |
免费 | 28篇 |
国内免费 | 3篇 |
专业分类
管理学 | 54篇 |
民族学 | 3篇 |
人口学 | 43篇 |
丛书文集 | 24篇 |
理论方法论 | 8篇 |
综合类 | 287篇 |
社会学 | 32篇 |
统计学 | 755篇 |
出版年
2023年 | 8篇 |
2022年 | 10篇 |
2021年 | 6篇 |
2020年 | 25篇 |
2019年 | 29篇 |
2018年 | 30篇 |
2017年 | 62篇 |
2016年 | 35篇 |
2015年 | 20篇 |
2014年 | 49篇 |
2013年 | 281篇 |
2012年 | 97篇 |
2011年 | 39篇 |
2010年 | 39篇 |
2009年 | 42篇 |
2008年 | 45篇 |
2007年 | 29篇 |
2006年 | 32篇 |
2005年 | 24篇 |
2004年 | 19篇 |
2003年 | 21篇 |
2002年 | 27篇 |
2001年 | 21篇 |
2000年 | 20篇 |
1999年 | 30篇 |
1998年 | 19篇 |
1997年 | 14篇 |
1996年 | 12篇 |
1995年 | 30篇 |
1994年 | 17篇 |
1993年 | 13篇 |
1992年 | 16篇 |
1991年 | 11篇 |
1990年 | 2篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 1篇 |
1979年 | 2篇 |
1977年 | 3篇 |
1976年 | 1篇 |
排序方式: 共有1206条查询结果,搜索用时 31 毫秒
91.
Göran Kauermann Christian Schellhase David Ruppert 《Scandinavian Journal of Statistics》2013,40(4):685-705
The paper introduces a new method for flexible spline fitting for copula density estimation. Spline coefficients are penalized to achieve a smooth fit. To weaken the curse of dimensionality, instead of a full tensor spline basis, a reduced tensor product based on so called sparse grids (Notes Numer. Fluid Mech. Multidiscip. Des., 31, 1991, 241‐251) is used. To achieve uniform margins of the copula density, linear constraints are placed on the spline coefficients, and quadratic programming is used to fit the model. Simulations and practical examples accompany the presentation. 相似文献
92.
D. T. Mc Nichols 《统计学通讯:理论与方法》2013,42(6):2043-2062
Nonparametric maximum likelihood estimation of decreasing and unimodal density functions, based on observations subject to arbitrary right censorship, was considered by McNichols and Padgett(1982). In order to compute their estimators, however, nonlinear equations with linear constraints had to be maximized using numerical techniques. The exact solution to this problem can now be found. An example illustrates the simplicity of the method. 相似文献
93.
Kazuhiro Ohtani 《统计学通讯:理论与方法》2013,42(10):2733-2746
In this paper, we derive the distribution and density functions of the feasible generalized ridge regression (GRR) estimator. It is shown that when the absolute value of a regression coefficient is close to zero, the distribution of the feasible GRR estimator is bimodal and has thinner tails than that of the OLS estimator. 相似文献
94.
《统计学通讯:理论与方法》2013,42(12):2139-2149
ABSTRACT The Mellin integral transform is widely used to find the distributions of products and quotients of independent random variables defined over the positive domain. But it is hardly used to derive the distributions defined over both positive and negative values of the random variables. In this paper, the Mellin integral transform is applied to obtain the doubly noncentral t density and its distribution function in convergent series forms. 相似文献
95.
邝向军 《西南科技大学学报(哲学社会科学版)》2001,18(3):32-34
给出了一个用来计算复合电子发光薄膜中非晶二氧化硅层的电流密度的动力学模型 ,利用此模型和蒙特卡洛模拟 ,可以得到电子在不同的电场下通过非晶二氧化硅层时所需要的时间 ,然后给出了一些参数的经验值 ,计算得到了与实验基本相一致的理论结果。 相似文献
96.
We propose kernel density estimators based on prebinned data. We use generalized binning schemes based on the quantiles points of a certain auxiliary distribution function. Therein the uniform distribution corresponds to usual binning. The statistical accuracy of the resulting kernel estimators is studied, i.e. we derive mean squared error results for the closeness of these estimators to both the true function and the kernel estimator based on the original data set. Our results show the influence of the choice of the auxiliary density on the binned kernel estimators and they reveal that non-uniform binning can be worthwhile. 相似文献
97.
We obtain the rates of pointwise and uniform convergence of multivariate kernel density estimators using a random bandwidth vector obtained by some data-based algorithm. We are able to obtain faster rate for pointwise convergence. The uniform convergence rate is obtained under some moment condition on the marginal distribution. The rates are obtained under i.i.d. and strongly mixing type dependence assumptions. 相似文献
98.
利用最小化代价函数的方法推导了一种谱分析的多窗口。性能分析的结果表明,此方法与离散长球序列多窗口谱分析方法具有相当的估计偏差与方差性能。与离散长球序列多窗口相比,此方法得到的多窗口具有直观的解析表达式而无须求解矩阵的特征分解问题,因而具有较小的计算量。通过对离散白噪声与AR过程进行的多窗口谱分析对比实验,验证了此方法的有效性和正确性。 相似文献
99.
Joseph Glaz 《统计学通讯:理论与方法》2013,42(8):2419-2454
In this article we review the major areas of remote sensing in the Russian literature for the period 1976 to 1985 that use statistical methods to analyze the observed data. For each of the areas, the problems that have been studied and the statistical techniques that have been used are briefly described 相似文献
100.
The Bayes estimators of the Gini index, the mean income and the proportion of the population living below a prescribed income
level are obtained in this paper on the basis of censored income data from a pareto income distribution. The said estimators
are obtained under the assumptions of a two-parameter exponential prior distribution and the usual squared error loss function.
This work is also extended to the case when the income data are grouped and the exact incomes for the individuals in the population
are not available. The method for the assessment of the hyperparameters is also outlined. Finally, the results are generalized
for the doubly truncated gamma prior distribution.
Now deceased. 相似文献