全文获取类型
收费全文 | 607篇 |
免费 | 9篇 |
国内免费 | 2篇 |
专业分类
管理学 | 58篇 |
民族学 | 1篇 |
人口学 | 1篇 |
丛书文集 | 7篇 |
理论方法论 | 1篇 |
综合类 | 134篇 |
统计学 | 416篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 1篇 |
2020年 | 8篇 |
2019年 | 13篇 |
2018年 | 18篇 |
2017年 | 29篇 |
2016年 | 13篇 |
2015年 | 9篇 |
2014年 | 20篇 |
2013年 | 165篇 |
2012年 | 38篇 |
2011年 | 15篇 |
2010年 | 16篇 |
2009年 | 16篇 |
2008年 | 18篇 |
2007年 | 16篇 |
2006年 | 17篇 |
2005年 | 11篇 |
2004年 | 19篇 |
2003年 | 13篇 |
2002年 | 7篇 |
2001年 | 15篇 |
2000年 | 18篇 |
1999年 | 17篇 |
1998年 | 25篇 |
1997年 | 10篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 30篇 |
1993年 | 1篇 |
1992年 | 6篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1977年 | 4篇 |
1976年 | 1篇 |
排序方式: 共有618条查询结果,搜索用时 0 毫秒
31.
32.
Wenan Zang 《Journal of Combinatorial Optimization》1998,2(2):117-188
A fully odd K4 is a subdivision of K4 such that each of the six edges of the K4 is subdivided into a path of odd length. In 1974, Toft conjectured that every graph containing no fully odd K4 can be vertex-colored with three colors. The purpose of this paper is to prove Toft's conjecture. 相似文献
33.
利用扩展乘数法构造了 Landau型多项式算子逼近全空间或有界集上无界函数的若干收敛定理 ,给出了具有一般性的结论 ,从而推广了已有文献的若干结果 . 相似文献
34.
NONPARAMETRIC AUTOCOVARIANCE FUNCTION ESTIMATION 总被引:2,自引:0,他引:2
Nonparametric estimators of autocovariance functions for non-stationary time series are developed. The estimators are based on straightforward nonparametric mean function estimation ideas and allow use of any linear smoother (e.g. smoothing spline, local polynomial). The paper studies the properties of the estimators, and illustrates their usefulness through application to some meteorological and seismic time series. 相似文献
35.
The well-known Meixner class (Meixner, 1934) of probabilities on R has been extended recently to R d (Pommeret, 1996). This generalized Meixner class corresponds to the simple quadratic natural exponential families characterized by Casalis (1996). Following Lancaster (1975), the present paper offers a characterization of the joint probability of a randomvector ( X, Y ) such that the two variables X and Y on R d belong to the multidimensional Meixner class and fulfil a bi-orthogonality condition involving orthogonal polynomials. The joint probabilities, called Lancaster probabilities, are characterized by two sequences of orthogonal polynomials with respect to the margins and a sequence of expectations of products. Some multivariate probabilities are studied, namely the Poisson-Gaussian and the gamma-Gaussian. 相似文献
36.
W.Y. Tan 《Journal of statistical planning and inference》1985,11(3):329-340
Tiku's robust procedure for testing mean and variance from nonnormal universe is examined from the Bayesian viewpoint. The posterior distribution of the scale parameter is derived and then approximated by a Laguerre polynomial expansion while the posterior distribution of the location parameter is approximated by a linear combination of t-distributions. For the example with Darwin's data, the approximations appear to be extremely good. 相似文献
37.
Convergence of Heavy-tailed Monte Carlo Markov Chain Algorithms 总被引:1,自引:0,他引:1
Abstract. In this paper, we use recent results of Jarner & Roberts ( Ann. Appl. Probab., 12, 2002, 224) to show polynomial convergence rates of Monte Carlo Markov Chain algorithms with polynomial target distributions, in particular random-walk Metropolis algorithms, Langevin algorithms and independence samplers. We also use similar methodology to consider polynomial convergence of the Gibbs sampler on a constrained state space. The main result for the random-walk Metropolis algorithm is that heavy-tailed proposal distributions lead to higher rates of convergence and thus to qualitatively better algorithms as measured, for instance, by the existence of central limit theorems for higher moments. Thus, the paper gives for the first time a theoretical justification for the common belief that heavy-tailed proposal distributions improve convergence in the context of random-walk Metropolis algorithms. Similar results are shown to hold for Langevin algorithms and the independence sampler, while results for the mixing of Gibbs samplers on uniform distributions on constrained spaces are rather different in character. 相似文献
38.
本文从理论上研究了二阶电路完全响应的检测理论,讨论了用MCS-51单片机控制的二阶电路辅助教学系统的设计思想以及MCS-51单片机辅助教学系统的实现方案。 相似文献
39.
40.
One of the most notorious network design problems is the Quadratic Assignment Problem (QAP). We develop an heuristic algorithm for QAPs along with an M/G/C/C state dependent queueing model for capturing congestion in the traffic system interconnecting the nodes in the network. Computational results are also presented. 相似文献