全文获取类型
收费全文 | 1841篇 |
免费 | 36篇 |
国内免费 | 9篇 |
专业分类
管理学 | 50篇 |
劳动科学 | 1篇 |
民族学 | 9篇 |
人口学 | 9篇 |
丛书文集 | 136篇 |
理论方法论 | 50篇 |
综合类 | 919篇 |
社会学 | 39篇 |
统计学 | 673篇 |
出版年
2024年 | 1篇 |
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 14篇 |
2020年 | 17篇 |
2019年 | 22篇 |
2018年 | 24篇 |
2017年 | 50篇 |
2016年 | 33篇 |
2015年 | 37篇 |
2014年 | 62篇 |
2013年 | 368篇 |
2012年 | 104篇 |
2011年 | 80篇 |
2010年 | 78篇 |
2009年 | 86篇 |
2008年 | 90篇 |
2007年 | 111篇 |
2006年 | 91篇 |
2005年 | 108篇 |
2004年 | 86篇 |
2003年 | 75篇 |
2002年 | 62篇 |
2001年 | 84篇 |
2000年 | 45篇 |
1999年 | 30篇 |
1998年 | 15篇 |
1997年 | 10篇 |
1996年 | 11篇 |
1995年 | 15篇 |
1994年 | 14篇 |
1993年 | 7篇 |
1992年 | 7篇 |
1991年 | 7篇 |
1990年 | 6篇 |
1989年 | 3篇 |
1988年 | 7篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 4篇 |
1984年 | 1篇 |
1983年 | 3篇 |
1982年 | 2篇 |
1977年 | 3篇 |
1976年 | 1篇 |
1975年 | 2篇 |
排序方式: 共有1886条查询结果,搜索用时 328 毫秒
81.
In this paper, we consider a generalisation of the backward simulation method of Duch et al. [New approaches to operational risk modeling. IBM J Res Develop. 2014;58:1–9] to build bivariate Poisson processes with flexible time correlation structures, and to simulate the arrival times of the processes. The proposed backward construction approach uses the Marshall–Olkin bivariate binomial distribution for the conditional law and some well-known families of bivariate copulas for the joint success probability in lieu of the typical conditional independence assumption. The resulting bivariate Poisson process can exhibit various time correlation structures which are commonly observed in real data. 相似文献
82.
Šárka Hudecová Marie Hušková Simos G. Meintanis 《Scandinavian Journal of Statistics》2017,44(4):843-865
We propose methods for detecting structural changes in time series with discrete‐valued observations. The detector statistics come in familiar L2‐type formulations incorporating the empirical probability generating function. Special emphasis is given to the popular models of integer autoregression and Poisson autoregression. For both models, we study mainly structural changes due to a change in distribution, but we also comment for the classical problem of parameter change. The asymptotic properties of the proposed test statistics are studied under the null hypothesis as well as under alternatives. A Monte Carlo power study on bootstrap versions of the new methods is also included along with a real data example. 相似文献
83.
The first-order product autoregressive (PAR(1)) model introduced by McKenzie in 1982 did not attract the attention of practitioners due to the unavailability of a proper estimation method. This article proposes an estimating function (EF) method to fill the gap. In particular, we suggest an optimal combination of linear and quadratic EFs to overcome the problem of parameter identification. The procedure is applied to Weibull and Gamma PAR(1) models. Simulation and data analysis show that the proposed method performs better than the existing methods. 相似文献
84.
Here, we consider a generalized form of the alternative zero-inflated logarithmic series distribution of Kumar and Riyaz (J. Statist. Comp. Simul., 2015) and study some of its important aspects. The parameters of the distribution are estimated by the method of maximum likelihood and some test procedures are developed for testing the significance of the additional parameter of the model. All these estimation and testing procedures are illustrated with the help of certain real life datasets. A simulation study is also carried out for assessing the performance of the estimators. 相似文献
85.
This article introduces a five-parameter lifetime model called the McDonald Gompertz (McG) distribution to extend the Gompertz, generalized Gompertz, generalized exponential, beta Gompertz, and Kumaraswamy Gompertz distributions among several other models. The hazard function of new distribution can be increasing, decreasing, upside-down bathtub, and bathtub shaped. We obtain several properties of the McG distribution including moments, entropies, quantile, and generating functions. We provide the density function of the order statistics and their moments. The parameter estimation is based on the usual maximum likelihood approach. We also provide the observed information matrix and discuss inferences issues. The flexibility and usefulness of the new distribution are illustrated by means of application to two real datasets. 相似文献
86.
In this article, the statistical inference for the Gompertz distribution based on Type-II progressively hybrid censored data is discussed. The estimation of the parameters for Gompertz distribution is obtained using maximum likelihood method (MLE) and Bayesian method under three different loss functions. We also proved the existence and uniqueness of the MLE. The one-sample Bayesian prediction intervals are obtained. The work is done for different values of the parameters. We apply the Monto Carlo simulation to compare the proposed methods, also an example is discussed to construct the Prediction intervals. 相似文献
87.
88.
Robert M. Mnatsakanov 《统计学通讯:理论与方法》2017,46(7):3174-3185
Two approximations recovering the functions from their transformed moments are proposed. The upper bounds for the uniform rate of convergence are derived. In addition, the comparisons of the estimates of the cumulative distribution function and its density function with the empirical distribution and the kernel density estimates are conducted via a simulation study. The plots of recovered functions are presented for several examples as well. 相似文献
89.
靳开宇 《重庆邮电大学学报(社会科学版)》2017,29(3):71-75
在网络言语交际过程中,网络语言娱乐性的表现形式、特点及其制约机制等问题一直是学界关注的话题.为从语言功能视角阐释网络语言娱乐性的实现方式及其根源等问题,运用了比较分析和例证相结合的研究方法,通过比较分析说明网络语言的内涵及其存在形式的双重性特征,介绍了语言娱乐功能的内涵和陈望道先生的“辞趣”思想,通过网络语言在形趣、音趣和意趣方面的例证分析,对“辞趣”理论实质从语言娱乐功能实现角度重新进行了梳理,指出网络语言娱乐功能具体实现的语言结构形式途径,认为网络言语交际中娱乐性的根源来自于社会物质条件和主体内在需求的合力,因为使用了网络媒介,所以才表现出独具特色的网络言语交际形式. 相似文献
90.