全文获取类型
收费全文 | 3943篇 |
免费 | 109篇 |
国内免费 | 14篇 |
专业分类
管理学 | 207篇 |
民族学 | 1篇 |
人口学 | 39篇 |
丛书文集 | 38篇 |
理论方法论 | 23篇 |
综合类 | 377篇 |
社会学 | 29篇 |
统计学 | 3352篇 |
出版年
2024年 | 1篇 |
2023年 | 22篇 |
2022年 | 33篇 |
2021年 | 24篇 |
2020年 | 69篇 |
2019年 | 149篇 |
2018年 | 160篇 |
2017年 | 269篇 |
2016年 | 125篇 |
2015年 | 84篇 |
2014年 | 118篇 |
2013年 | 1150篇 |
2012年 | 353篇 |
2011年 | 107篇 |
2010年 | 125篇 |
2009年 | 134篇 |
2008年 | 126篇 |
2007年 | 93篇 |
2006年 | 94篇 |
2005年 | 91篇 |
2004年 | 81篇 |
2003年 | 68篇 |
2002年 | 73篇 |
2001年 | 65篇 |
2000年 | 60篇 |
1999年 | 60篇 |
1998年 | 54篇 |
1997年 | 42篇 |
1996年 | 24篇 |
1995年 | 20篇 |
1994年 | 28篇 |
1993年 | 19篇 |
1992年 | 23篇 |
1991年 | 8篇 |
1990年 | 15篇 |
1989年 | 9篇 |
1988年 | 17篇 |
1987年 | 8篇 |
1986年 | 7篇 |
1985年 | 4篇 |
1984年 | 13篇 |
1983年 | 13篇 |
1982年 | 6篇 |
1981年 | 5篇 |
1980年 | 1篇 |
1979年 | 6篇 |
1978年 | 5篇 |
1977年 | 2篇 |
1975年 | 2篇 |
1973年 | 1篇 |
排序方式: 共有4066条查询结果,搜索用时 250 毫秒
931.
932.
Enio Jelihovschi 《统计学通讯:理论与方法》2013,42(3):665-692
We study estimation of the parameter p of a r.v. x ~ Bin(p,n) using the prior hypothesis that p equals a prepecified value Po when we entertain the possibility that Po is not the right value of p, which then could be any value in (0.1). We apply notions of Hodges and Lehmann (1952), Bickel (1984) and Berger (1982) to obtain (biased) estimators which do well under the hypothesis that p = po at a small price in maximum risk. A number of examples and comparisons are discussed at the end of the paper. 相似文献
933.
Charles R.O. Lawoko 《统计学通讯:理论与方法》2013,42(12):4627-4641
Consideration is given here to the problem of maximum likelihood estimation of parameters in a sparial discrimination model which was proposed by switzer (1980). some moments of these estimators are derived. These results extend the work of Mardia (1984) who gave expressions for these estimators without their moments. 相似文献
934.
Sample surveys are usually designed and analyzed to produce estimates for larger areas and/or populations. Nevertheless, sample sizes are often not large enough to give adequate precision for small area estimates of interest. To circumvent such difficulties, borrowing strength from related small areas via modeling becomes essential. In line with this, we propose a hierarchical multivariate Bayes prediction method for small area estimation based on the seemingly unrelated regressions (SUR) model. The performance of the proposed method was evaluated through simulation studies. 相似文献
935.
An application of empirical Bayes and Kalman filtering tecniques is reported, using live data from Indian Statistical Institute (ISI), Calcutta . to illustrate how initial small domain estimators may be vastly improved upon. A stratified two stage sampling procedure is adopted, allowing selection of first stage units with unequal probabilities but of second stage units with equal probabilities. Standard design-based estimators for domain totals are initialized based on domain specific survey data alone. Strength is then borrowed across domains and from past surveys. The resulting gains in efficacy are numlerically demonstrated, through replicated sampling from official records. 相似文献
936.
937.
Consistency of the GMLE with Mixed Case Interval-Censored Data 总被引:1,自引:1,他引:0
In this paper we consider an interval censorship model in which the endpoints of the censoring intervals are determined by a two stage experiment. In the first stage the value k of a random integer is selected; in the second stage the endpoints are determined by a case k interval censorship model. We prove the strong consistency in the L 1 ( μ )-topology of the non-parametric maximum likelihood estimate of the underlying survival function for a measure μ which is derived from the distributions of the endpoints. This consistency result yields strong consistency for the topologies of weak convergence, pointwise convergence and uniform convergence under additional assumptions. These results improve and generalize existing ones in the literature. 相似文献
938.
In this article, we investigate the potential usefulness of the three-parameter transmuted Weibull distribution for modeling survival data. The main advantage of this distribution is that it has increasing, decreasing or constant instantaneous failure rate depending on the shape parameter and the new transmuting parameter. We obtain several mathematical properties of the transmuted Weibull distribution such as the expressions for the quantile function, moments, geometric mean, harmonic mean, Shannon, Rényi and q-entropies, mean deviations, Bonferroni and Lorenz curves, and the moments of order statistics. We propose a location-scale regression model based on the log-transmuted Weibull distribution for modeling lifetime data. Applications to two real datasets are given to illustrate the flexibility and potentiality of the transmuted Weibull family of lifetime distributions. 相似文献
939.
M. H. Tahir Gauss M. Cordeiro Ayman Alzaatreh M. Mansoor M. Zubair 《统计学通讯:模拟与计算》2016,45(10):3548-3567
Many distributions have been used as lifetime models. In this article, we propose a new three-parameter Weibull–Pareto distribution, which can produce the most important hazard rate shapes, namely, constant, increasing, decreasing, bathtub, and upsidedown bathtub. Various structural properties of the new distribution are derived including explicit expressions for the moments and incomplete moments, Bonferroni and Lorenz curves, mean deviations, mean residual life, mean waiting time, and generating and quantile functions. The Rényi and q entropies are also derived. We obtain the density function of the order statistics and their moments. The model parameters are estimated by maximum likelihood and the observed information matrix is determined. The usefulness of the new model is illustrated by means of two real datasets on Wheaton river flood and bladder cancer. In the two applications, the new model provides better fits than the Kumaraswamy–Pareto, beta-exponentiated Pareto, beta-Pareto, exponentiated Pareto, and Pareto models. 相似文献
940.
In this paper several nonparametric, non-Bayesian methods for estimating the failure rate function on which no monotonicity conditions have been imposed are surveyed. The survey attempts to consolidate and synthesize literature from several diverse areas of application, and endeavors to be as up-to-date as is feasible. 相似文献