全文获取类型
收费全文 | 16722篇 |
免费 | 469篇 |
国内免费 | 130篇 |
专业分类
管理学 | 548篇 |
劳动科学 | 2篇 |
民族学 | 134篇 |
人才学 | 1篇 |
人口学 | 264篇 |
丛书文集 | 1597篇 |
理论方法论 | 765篇 |
综合类 | 8171篇 |
社会学 | 916篇 |
统计学 | 4923篇 |
出版年
2024年 | 30篇 |
2023年 | 122篇 |
2022年 | 128篇 |
2021年 | 166篇 |
2020年 | 222篇 |
2019年 | 302篇 |
2018年 | 338篇 |
2017年 | 583篇 |
2016年 | 308篇 |
2015年 | 353篇 |
2014年 | 711篇 |
2013年 | 2575篇 |
2012年 | 1054篇 |
2011年 | 920篇 |
2010年 | 724篇 |
2009年 | 752篇 |
2008年 | 789篇 |
2007年 | 905篇 |
2006年 | 946篇 |
2005年 | 869篇 |
2004年 | 810篇 |
2003年 | 759篇 |
2002年 | 659篇 |
2001年 | 556篇 |
2000年 | 362篇 |
1999年 | 150篇 |
1998年 | 92篇 |
1997年 | 76篇 |
1996年 | 59篇 |
1995年 | 56篇 |
1994年 | 36篇 |
1993年 | 40篇 |
1992年 | 31篇 |
1991年 | 33篇 |
1990年 | 30篇 |
1989年 | 23篇 |
1988年 | 18篇 |
1987年 | 16篇 |
1986年 | 9篇 |
1985年 | 109篇 |
1984年 | 125篇 |
1983年 | 89篇 |
1982年 | 82篇 |
1981年 | 66篇 |
1980年 | 77篇 |
1979年 | 67篇 |
1978年 | 62篇 |
1977年 | 14篇 |
1976年 | 12篇 |
1975年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 515 毫秒
941.
The authors establish the joint distribution of the sum X and the maximum Y of IID exponential random variables. They derive exact formuli describing the random vector (X, Y), including its joint PDF, CDF, and other characteristics; marginal and conditional distributions; moments and related parameters; and stochastic representations leading to further properties of infinite divisibility and self-decomposability. The authors also discuss parameter estimation and include an example from climatology that illustrates the modeling potential of this new bivariate model. 相似文献
942.
Burkhard O. Rauhut 《统计学通讯:理论与方法》2013,42(13):1439-1452
Given a life testing experiment consisting of n items, n-1 of which have the expected life λ while one could have an expected life λ/α with 0 < α < 1 the problem is. to find a mean square error (MSE) minimizing estimation function. The standard estimators for the homogeneous case (α = 1) overestimate the expected life and their MSE tend to infinity when a tends to 0. Looking at the estimation problem as an insurance (see Anscombe (1960)) two different “testimators” are compared with respect to their MSE, Numerical results show that an estimation function based on the “Epstein-statistic” x(n)/[xbar] is the best one. 相似文献
943.
A simple adaptation of a distribution-free method due to Scholz (1978) and Sievers (1978) for inference in a single regression setting is proposed for inference about the difference in slopes of two regression lines. We assume that the data are obtained from a designed experiment with common regression constants. A comparison of the proposed method to its competitors-one due to Hollander and the other due to Rao and Gore-indicates superiority of the new method. 相似文献
944.
945.
从诗歌的情绪意蕴与形式的关系入手,分析《再别康桥》一诗的旋律特征和旋律发展,以此探析该诗在音乐性上的独特性,并简要分析该诗形式与意蕴实现完美统一的奥秘。 相似文献
946.
《Journal of Statistical Computation and Simulation》2012,82(1):171-185
In this paper, inference for the scale parameter of lifetime distribution of a k-unit parallel system is provided. Lifetime distribution of each unit of the system is assumed to be a member of a scale family of distributions. Maximum likelihood estimator (MLE) and confidence intervals for the scale parameter based on progressively Type-II censored sample are obtained. A β-expectation tolerance interval for the lifetime of the system is obtained. As a member of the scale family, half-logistic distribution is considered and the performance of the MLE, confidence intervals and tolerance intervals are studied using simulation. 相似文献
947.
John E. Angus 《统计学通讯:理论与方法》2013,42(21):2477-2482
The asymptotic normality of the Cramer-von Mises one-sample test statistic and one of its variants under an alternative cdf is demonstrated. The derivation herein is unique in that it does not require knowledge of the theory of weak convergence of probability measures defined on metrized function spaces, and thus is accessible to a broader class of students and practitioners. 相似文献
948.
Frederick Mosteller 《The American statistician》2013,67(1):18-19
In addition to his contributions to biostatistics and clinical trials, Paul Meier had a long-term interest in the legal applications of statistics. As part of this, he had extensive experience as a statistical consultant. Legal consulting can be a minefield, but as a result of his background, Paul had excellent advice to give to those starting out on how to function successfully in this environment. 相似文献
949.
M. L. Walker Y. H. Dovoedo S. Chakraborti C. W. Hilton 《The American statistician》2013,67(4):348-353
The boxplot is an effective data-visualization tool useful in diverse applications and disciplines. Although more sophisticated graphical methods exist, the boxplot remains relevant due to its simplicity, interpretability, and usefulness, even in the age of big data. This article highlights the origins and developments of the boxplot that is now widely viewed as an industry standard as well as its inherent limitations when dealing with data from skewed distributions, particularly when detecting outliers. The proposed Ratio-Skewed boxplot is shown to be practical and suitable for outlier labeling across several parametric distributions. 相似文献
950.
S. Kalke 《Journal of Statistical Computation and Simulation》2013,83(4):641-667
In this paper, we introduce the p-generalized polar methods for the simulation of the p-generalized Gaussian distribution. On the basis of geometric measure representations, the well-known Box–Muller method and the Marsaglia–Bray rejecting polar method for the simulation of the Gaussian distribution are generalized to simulate the p-generalized Gaussian distribution, which fits much more flexibly to data than the Gaussian distribution and has already been applied in various fields of modern sciences. To prove the correctness of the p-generalized polar methods, we give stochastic representations, and to demonstrate their adequacy, we perform a comparison of six simulation techniques w.r.t. the goodness of fit and the complexity. The competing methods include adapted general methods and another special method. Furthermore, we prove stochastic representations for all the adapted methods. 相似文献