全文获取类型
收费全文 | 7146篇 |
免费 | 134篇 |
国内免费 | 33篇 |
专业分类
管理学 | 314篇 |
民族学 | 26篇 |
人口学 | 143篇 |
丛书文集 | 230篇 |
理论方法论 | 108篇 |
综合类 | 1745篇 |
社会学 | 72篇 |
统计学 | 4675篇 |
出版年
2024年 | 5篇 |
2023年 | 25篇 |
2022年 | 57篇 |
2021年 | 58篇 |
2020年 | 108篇 |
2019年 | 202篇 |
2018年 | 230篇 |
2017年 | 455篇 |
2016年 | 147篇 |
2015年 | 169篇 |
2014年 | 246篇 |
2013年 | 2038篇 |
2012年 | 548篇 |
2011年 | 288篇 |
2010年 | 208篇 |
2009年 | 242篇 |
2008年 | 257篇 |
2007年 | 255篇 |
2006年 | 219篇 |
2005年 | 229篇 |
2004年 | 182篇 |
2003年 | 171篇 |
2002年 | 164篇 |
2001年 | 150篇 |
2000年 | 127篇 |
1999年 | 75篇 |
1998年 | 64篇 |
1997年 | 47篇 |
1996年 | 41篇 |
1995年 | 33篇 |
1994年 | 25篇 |
1993年 | 30篇 |
1992年 | 28篇 |
1991年 | 25篇 |
1990年 | 26篇 |
1989年 | 22篇 |
1988年 | 15篇 |
1987年 | 16篇 |
1986年 | 8篇 |
1985年 | 11篇 |
1984年 | 13篇 |
1983年 | 15篇 |
1982年 | 7篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 6篇 |
1978年 | 5篇 |
1977年 | 6篇 |
1976年 | 3篇 |
1975年 | 4篇 |
排序方式: 共有7313条查询结果,搜索用时 484 毫秒
641.
Helmut Schellhaas 《Statistical Papers》1999,40(3):343-349
A recursive scheme for the calculation of the distribution of the test statistic of a modified Kolmogorov-Smirnov-test for
a rectangular distribution with unknown parameters is given. 相似文献
642.
The authors study the asymptotic behaviour of the likelihood ratio statistic for testing homogeneity in the finite mixture models of a general parametric distribution family. They prove that the limiting distribution of this statistic is the squared supremum of a truncated standard Gaussian process. The autocorrelation function of the Gaussian process is explicitly presented. A re‐sampling procedure is recommended to obtain the asymptotic p‐value. Three kernel functions, normal, binomial and Poisson, are used in a simulation study which illustrates the procedure. 相似文献
643.
In this paper, we derive some recurrence relations for the single and the product moments of order statistics from n independent and non-identically distributed Lomax and right-truncated Lomax random variables. These recurrence relations
are simple in nature and could be used systematically in order to compute all the single and product moments of all order
statistics in a simple recursive manner. The results for order statistics from the multiple-outlier model (with a slippage
of p observations) are deduced as special cases. We then apply these results by examining the robustness of censored BLUE's to
the presence of multiple outliers.
Received: November 30, 1998; revised version: March 8, 2000 相似文献
644.
D. E. Amos 《统计学通讯:理论与方法》2013,42(3):261-281
Recursion relations suitable for rapid computation are derived for the cumulative distribution of F′ = (X/m)/(Y/n) where X is χ2(λ, m) and Y is independently χ2(n). When n is even no complicated function evaluations are needed. For n odd, a special doubly noncentral t distribution is needed to start the computation. Series representations for this t distribution are given with rigorous bounds on truncation errors. Proper recursion techniques for numerical evaluation of the special functions are given. 相似文献
645.
Bathtub distributions are characterized by bathtub failure rate functions . These are possibly more realisitic models than the monotone failure rate models . A systematic account of such distributions is not available and this review aims to give such an account . We give some easily verifiable conditions to check the bathtub property of a distribution along with methods to construct such distributions . We also discuss some stochastic and reliablity mechanisms which lead to bathtub distributions. These include mixtures ( stochastic failure rate models ) , series system , stochastic differential equation models and so on. We also review inference on bathtub distributions. The paper concludes with a rather exhaustive list of bathtub distributions. 相似文献
646.
Uwe Hassler 《统计学通讯:理论与方法》2013,42(12):3137-3146
Ratios of periodogram and spectral density at different harmonic frequencies are independent if the frequency zero is approached slowly enough. This is an asymptotically relevant condition for the periodogram regression to work with fractionally integrated series. In finite samples, however, this theoretical condition should be ignored as we illustrate experimentally. 相似文献
647.
耿潇 《重庆工商大学学报(社会科学版)》2013,30(6):109-114
针对当前现状,以1971—2011年的诺贝尔文学奖四十年来的获奖情况为研究对象,从获奖作家所属的不同的国家分布、作家性别比例及和获奖作品风格与主旨这三个大的方面入手进行分析,探究诺贝尔文学奖的发展态势,概括和反思目前中国文学的发展状况,剖析中国作家莫言的获奖原因,由此提出对于中国作家要在诺贝尔文学奖中占有更多席位需要完善方面的建议和看法。 相似文献
648.
A nonasymptotic Bayesian approach is developed for analysis of data from threshold autoregressive processes with two regimes. Using the conditional likelihood function, the marginal posterior distribution for each of the parameters is derived along with posterior means and variances. A test for linear functions of the autoregressive coefficients is presented. The approach presented uses a posterior p-value averaged over the values of the threshold. The one-step ahead predictive distribution is derived along with the predictive mean and variance. In addition, equivalent results are derived conditional upon a value of the threshold. A numerical example is presented to illustrate the approach. 相似文献
649.
Egmar Rödel 《Statistics》2013,47(3):387-397
Let Xbe a bivariate exponential-type random vector (BIDLIKAR, PATIL (1968)), than it is proved: 1. If P(X ≥0) = 1 is valid, then Xhas linear regression to both directions if and only if Xpossesses a symmetric Γ-distribution. 2. Xpossesses linear regression to both directions with constant regression coefficients (independent of the parameter vector ? of the exponential-type distribution (BIDLIKAR, PATIL (1968)) if and only if Xis normal distributed. 相似文献
650.
The problem of estimating the mode of a conditional probability density function is considered. It is shown that under some regularity conditions the estimate of the conditional mode obtained by maximizing a kernel estimate of the conditional probability density function is strongly consistent and asymptotically normally distributed. 相似文献