全文获取类型
收费全文 | 14508篇 |
免费 | 310篇 |
国内免费 | 96篇 |
专业分类
管理学 | 573篇 |
劳动科学 | 2篇 |
民族学 | 100篇 |
人才学 | 1篇 |
人口学 | 188篇 |
丛书文集 | 936篇 |
理论方法论 | 276篇 |
综合类 | 6196篇 |
社会学 | 153篇 |
统计学 | 6489篇 |
出版年
2024年 | 8篇 |
2023年 | 45篇 |
2022年 | 79篇 |
2021年 | 101篇 |
2020年 | 176篇 |
2019年 | 279篇 |
2018年 | 325篇 |
2017年 | 633篇 |
2016年 | 254篇 |
2015年 | 314篇 |
2014年 | 521篇 |
2013年 | 2884篇 |
2012年 | 948篇 |
2011年 | 685篇 |
2010年 | 579篇 |
2009年 | 634篇 |
2008年 | 689篇 |
2007年 | 792篇 |
2006年 | 725篇 |
2005年 | 709篇 |
2004年 | 604篇 |
2003年 | 582篇 |
2002年 | 485篇 |
2001年 | 465篇 |
2000年 | 316篇 |
1999年 | 161篇 |
1998年 | 132篇 |
1997年 | 101篇 |
1996年 | 92篇 |
1995年 | 101篇 |
1994年 | 71篇 |
1993年 | 66篇 |
1992年 | 58篇 |
1991年 | 42篇 |
1990年 | 40篇 |
1989年 | 42篇 |
1988年 | 29篇 |
1987年 | 26篇 |
1986年 | 12篇 |
1985年 | 16篇 |
1984年 | 21篇 |
1983年 | 23篇 |
1982年 | 8篇 |
1981年 | 8篇 |
1980年 | 4篇 |
1979年 | 8篇 |
1978年 | 7篇 |
1977年 | 6篇 |
1976年 | 4篇 |
1975年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 406 毫秒
831.
S.A. Shaban 《统计学通讯:理论与方法》2013,42(14):1389-1399
Recursion relations suitable for rapid computation are derived for the probabilities of the compound Poisson distribution when the compounder is the inverse-Gaussian distribution. Series representation of the probabilities are given. Asymptotic results as well as approximations for probabilities, compared with the exact values, are investigated. 相似文献
832.
Nazir Ahmed Chaudhry 《统计学通讯:理论与方法》2013,42(9):3283-3313
Using the idea of impirical influence function, Hinkley (1977), the weighted jackknife technique is extended to ratio estimation. A weighted jackknife variance estimator for the ratio estimator is developed. Using the prediction theory approach, the properties of the weighted jackknifed variance estimator are examined. The implications of the failures of regression model on the behaviour of the weighted jackknifed variance estimator, for ratio estimation, are also studied. 相似文献
833.
Phillip Dinh 《Pharmaceutical statistics》2013,12(5):260-267
In longitudinal clinical studies, after randomization at baseline, subjects are followed for a period of time for development of symptoms. The interested inference could be the mean change from baseline to a particular visit in some lab values, the proportion of responders to some threshold category at a particular visit post baseline, or the time to some important event. However, in some applications, the interest may be in estimating the cumulative distribution function (CDF) at a fixed time point post baseline. When the data are fully observed, the CDF can be estimated by the empirical CDF. When patients discontinue prematurely during the course of the study, the empirical CDF cannot be directly used. In this paper, we use multiple imputation as a way to estimate the CDF in longitudinal studies when data are missing at random. The validity of the method is assessed on the basis of the bias and the Kolmogorov–Smirnov distance. The results suggest that multiple imputation yields less bias and less variability than the often used last observation carried forward method. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
834.
Equivariant functions can be useful for constructing of maximal invariant statistic. In this article, we discuss construction of maximal invariants based on a given weakly equivariant function under some additional conditions. The theory easily extends to the case of two or more weakly equivariant functions. Also, we derive a maximal invariant statistic when the group contains a sharply transitive and a characteristic subgroup. Finally, we consider the independence of invariant and weakly equivariant functions under some special conditions. 相似文献
835.
In the present paper, we introduce and study a class of distributions that has the linear mean residual quantile function. Various distributional properties and reliability characteristics of the class are studied. Some characterizations of the class of distributions are presented. We then present generalizations of this class of distributions using the relationship between various quantile based reliability measures. The method of L-moments is employed to estimate parameters of the class of distributions. Finally, we apply the proposed class of distributions to a real data set. 相似文献
836.
民主的最终实现必然是民主制度建设与民主文化建设的有机结合;贯彻落实科学发展观,建设社会主义政治文明,民主文化建设任童道远;工会参与社会主义民主文化建设,这是党的要求,是工会组织特性的内在规定,也是职工群众的强烈愿望. 相似文献
837.
Kōsei Iwase 《统计学通讯:理论与方法》2013,42(12):3559-3566
The uniformly minimum variance unbiased estimator of the cumulative hazard function in the Pareto distribution of the first kind is derived. The variance of the estimator is also obtained in an analytic form, and for some cases its values are compared numerically with mean square errors of the maximum likelihood estimator. 相似文献
838.
本文以电影"The Sound of Music"(《音乐之声》)对白为例,从语义和语用角度对英语语调所蕴含的各种意义加以探讨。 相似文献
839.
Nicholas T. Longford 《Journal of applied statistics》2009,36(11):1259-1265
This article is concerned with the analysis of a random sample from a binomial distribution when all the outcomes are zero (or unity). We discuss how elicitation of the prior can be reduced to asking the expert whether (and which of) the so-called borderline or equilibrium priors are plausible. 相似文献
840.
黄友 《新疆大学学报(社会科学版)》2009,37(3):133-135
反身宾语句生成有两个方面的因素,一是“身心二分”的“心支配身”认知框架,二是主观移情。反身宾语句有较强的描写性和事件伴随性,主要出现于文艺语体中。 相似文献