全文获取类型
收费全文 | 957篇 |
免费 | 20篇 |
国内免费 | 9篇 |
专业分类
管理学 | 66篇 |
民族学 | 1篇 |
人口学 | 4篇 |
丛书文集 | 9篇 |
理论方法论 | 7篇 |
综合类 | 280篇 |
社会学 | 2篇 |
统计学 | 617篇 |
出版年
2023年 | 3篇 |
2022年 | 5篇 |
2021年 | 4篇 |
2020年 | 19篇 |
2019年 | 25篇 |
2018年 | 33篇 |
2017年 | 42篇 |
2016年 | 33篇 |
2015年 | 31篇 |
2014年 | 28篇 |
2013年 | 243篇 |
2012年 | 65篇 |
2011年 | 34篇 |
2010年 | 25篇 |
2009年 | 33篇 |
2008年 | 32篇 |
2007年 | 25篇 |
2006年 | 27篇 |
2005年 | 32篇 |
2004年 | 25篇 |
2003年 | 24篇 |
2002年 | 24篇 |
2001年 | 16篇 |
2000年 | 14篇 |
1999年 | 13篇 |
1998年 | 13篇 |
1997年 | 26篇 |
1996年 | 9篇 |
1995年 | 13篇 |
1994年 | 11篇 |
1993年 | 7篇 |
1992年 | 6篇 |
1991年 | 11篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1988年 | 8篇 |
1987年 | 5篇 |
1986年 | 6篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1983年 | 3篇 |
1978年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有986条查询结果,搜索用时 875 毫秒
501.
502.
Hidekazu Tanaka 《统计学通讯:理论与方法》2013,42(9):1611-1628
It is well known that, under appropriate regularity conditions, the variance of an unbiased estimator of a real-valued function of an unknown parameter can coincide with the Cramér–Rao lower bound only if the family of distributions is a one-parameter exponential family. But it seems that the necessary conditions about the probability distribution for which there exists an unbiased estimator whose variance coincides with the Bhattacharyya lower bound are not completely known. The purpose of this paper is to specify the location, scale, and location-scale parameter family of distributions attaining the general order Bhattacharyya bound in certain class. 相似文献
503.
504.
R. Willink 《统计学通讯:理论与方法》2013,42(12):2235-2236
A clarification is given of the main result (1.1) in Communications in Statistics: Theory and Methods 34:753–766. The term {1 + 6a(r ? a)}1/3 is to be understood as sgn(1 + 6a(r ? a)) | 1 + 6a(r ? a)|1/3. The result is expressed in a more user-friendly form. An issue is raised regarding the common usage of the expression x 1/n when n is even. 相似文献
505.
This paper addresses extended quasi-likelihood models where both the mean and the dispersion parameters vary across observations in a parameterized fashion. We derive formulae for the second-order biases of the maximum quasi-likelihood estimators of all parameters in these models. The practical use of such bias corrections is illustrated in a simulation study. 相似文献
506.
In this article, we introduce a new method for the volatility function estimation of continuous-time diffusion process dX t = μ(X t )dt + σ(X t )dW t , which is based on combining the idea of local linear smoother and variable bandwidth. We give the expressions for the conditional MSE and MISE of the estimator and obtain the optimal variable bandwidth. An explicit formula for the optimal variable bandwidth is presented by minimizing the MISE, which extends the related results in Fan and Gijbels (1992), etc. Finally, some simulations show that the performance of the proposed estimator with optimal variable bandwidth is often much better than that of the local linear estimator with invariable bandwidth. 相似文献
507.
Shun Matsuura 《Journal of applied statistics》2014,41(9):1903-1918
Robust parameter design has been widely used to improve the quality of products and processes. Although a product array, in which an orthogonal array for control factors is crossed with an orthogonal array for noise factors, is commonly used for parameter design experiments, this may lead to an unacceptably large number of experimental runs. The compound noise strategy proposed by Taguchi [30] can be used to reduce the number of experimental runs. In this strategy, a compound noise factor is formed based on the directionality of the effects of noise factors. However, the directionality is usually unknown in practice. Recently, Singh et al. [28] proposed a random compound noise strategy, in which a compound noise factor is formed by randomly selecting a setting of the levels of noise factors. The present paper evaluates the random compound noise strategy in terms of the precision of the estimators of the response mean and the response variance. In addition, the variances of the estimators in the random compound noise strategy are compared with those in the n-replication design. The random compound noise strategy is shown to have smaller variances of the estimators than the 2-replication design, especially when the control-by-noise-interactions are strong. 相似文献
508.
In this paper, we consider the problem of testing for a parameter change in Poisson autoregressive models. We suggest two types of cumulative sum (CUSUM) tests, namely, those based on estimates and residuals. We first demonstrate that the conditional maximum likelihood estimator (CMLE) is strongly consistent and asymptotically normal and then construct the CMLE‐based CUSUM test. It is shown that under regularity conditions, its limiting null distribution is a function of independent Brownian bridges. Next, we construct the residual‐based CUSUM test and derive its limiting null distribution. Simulation results are provided for illustration. A real‐data analysis is performed on data for polio incidence and campylobacteriosis infections. 相似文献
509.
510.
The one-sided cumulative count of conforming (CCC) chart is a useful method to monitor nonconforming fraction in high-quality manufacturing processes. The nonconforming fraction parameter is assumed to be known when implementing a one-sided CCC chart. In this study, we investigated the impact of estimated nonconforming fraction, [pcirc] 0, in a one-sided CCC chart. The run length distribution is derived as well as the conditional probability of a false alarm rate (CFAR), conditional average run length (CARL) and its standard deviation (CSDRL). Simulation results are conducted to evaluate the effect of [pcirc] 0 in a one-sided CCC chart. The results show that values of CFAR, CARL and CSDRL are close to the nominal values for a large sample. The impact of estimation errors was also studied. We find that CFAR decreases for large [pcirc] 0. Thus, a large value of [pcirc] 0 is suggested for fewer false alarms. 相似文献