全文获取类型
收费全文 | 1877篇 |
免费 | 91篇 |
国内免费 | 30篇 |
专业分类
管理学 | 110篇 |
劳动科学 | 1篇 |
民族学 | 19篇 |
人口学 | 34篇 |
丛书文集 | 120篇 |
理论方法论 | 43篇 |
综合类 | 1054篇 |
社会学 | 97篇 |
统计学 | 520篇 |
出版年
2023年 | 13篇 |
2022年 | 18篇 |
2021年 | 19篇 |
2020年 | 32篇 |
2019年 | 39篇 |
2018年 | 55篇 |
2017年 | 55篇 |
2016年 | 50篇 |
2015年 | 59篇 |
2014年 | 107篇 |
2013年 | 261篇 |
2012年 | 142篇 |
2011年 | 133篇 |
2010年 | 94篇 |
2009年 | 77篇 |
2008年 | 83篇 |
2007年 | 118篇 |
2006年 | 109篇 |
2005年 | 71篇 |
2004年 | 72篇 |
2003年 | 61篇 |
2002年 | 70篇 |
2001年 | 47篇 |
2000年 | 27篇 |
1999年 | 28篇 |
1998年 | 23篇 |
1997年 | 14篇 |
1996年 | 18篇 |
1995年 | 20篇 |
1994年 | 13篇 |
1993年 | 9篇 |
1992年 | 11篇 |
1991年 | 9篇 |
1990年 | 10篇 |
1989年 | 8篇 |
1988年 | 9篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 5篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
排序方式: 共有1998条查询结果,搜索用时 31 毫秒
101.
随着互联网技术的发展,通过网络进行学习已成为一种趋势。基于网络环境的交互式教学模式在各类教学中广泛应用,为现代教育带来了新观念、新方法和新技术。交互式教学方式自由、灵活,学生获取信息快捷、简便,教师的主导作用明显,教学效率高。 相似文献
102.
This paper finds the mathematical forms of the distribution of the product where x and x follow a bivariate normal distribution In this paper the distribution when PT0 is expressed as an integral, a new, fundamental result. From this general form, six different cases can be distinguished depending on what is known about the parameters and p. The special cases are Aroian $year:1959 and (6) Additionally, we prove that if and as the distribution of the product approaches the Type III distribution. When p=0# Aroian $year:1959 and Aroian and Meeker $year:1977, give tables for various values of 6., 6 . The results in this paper will be used to provide brief tables for p^O in a separate paper 相似文献
103.
刘真 《河北建筑科技学院学报(社会科学版)》2011,(2):105-107
随着现代传媒技术的发展,动漫作为一种新兴的产业文化正日益蓬勃地发展。日本动漫以其制作精良、形象生动的特点占据了中国大部分的动漫市场,吸引了众多的青少年,而借助动漫,日本文化也在潜移默化中灌输给了青少年。文章试图分析日本动漫在中国的传播现状以及对中国的影响,从而提出面对日本动漫的冲击,中国动漫界应对的措施。 相似文献
104.
A generalized random coefficient first-order integer-valued autoregressive process with signed thinning operator is introduced, this kind of process is appropriate for modeling negative integer-valued time series. Strict stationarity and ergodicity of process are established. Estimators of the parameters of interest are derived and their properties are studied via simulation. At last, we use bootstrap method in the real data analysis. 相似文献
105.
An algorithm is presented for computing the finite population parameters and the approximate probability values associated with a recently-developed class of statistical inference techniques termed multi-response randomized block permutation procedures (MRBP). 相似文献
106.
In this paper we consider the problem of obtaining best linear unbiased estimators of individual response coefficients in a Random Coefficient Linear Regression (RCR} Model, comparing alternative estimators for these response vectors through a simulation study. We also provide an empirical example that illustrates the estimation procedure proposed here. 相似文献
107.
108.
《统计学通讯:理论与方法》2013,42(9):1835-1858
Abstract The efficacy and the asymptotic relative efficiency (ARE) of a weighted sum of Kendall's taus, a weighted sum of Spearman's rhos, a weighted sum of Pearson's r's, and a weighted sum of z-transformation of the Fisher–Yates correlation coefficients, in the presence of a blocking variable, are discussed. The method of selecting the weighting constants that maximize the efficacy of these four correlation coefficients is proposed. The estimate, test statistics and confidence interval of the four correlation coefficients with weights are also developed. To compare the small-sample properties of the four tests, a simulation study is performed. The theoretical and simulated results all prefer the weighted sum of the Pearson correlation coefficients with the optimal weights, as well as the weighted sum of z-transformation of the Fisher–Yates correlation coefficients with the optimal weights. 相似文献
109.
A. Ross Eckler 《The American statistician》2013,67(1):6-10
The change from the z of “Student's” 1908 paper to the t of present day statistical theory and practice is traced and documented. It is shown that the change was brought about by the extension of “Student's” approach, by R.A. Fisher, to a broader class of problems, in response to a direct appeal from “Student” for a solution to one of these problems. 相似文献
110.
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