全文获取类型
收费全文 | 8247篇 |
免费 | 168篇 |
国内免费 | 43篇 |
专业分类
管理学 | 325篇 |
民族学 | 31篇 |
人口学 | 149篇 |
丛书文集 | 335篇 |
理论方法论 | 121篇 |
综合类 | 2322篇 |
社会学 | 81篇 |
统计学 | 5094篇 |
出版年
2024年 | 8篇 |
2023年 | 32篇 |
2022年 | 69篇 |
2021年 | 67篇 |
2020年 | 120篇 |
2019年 | 229篇 |
2018年 | 258篇 |
2017年 | 494篇 |
2016年 | 192篇 |
2015年 | 198篇 |
2014年 | 284篇 |
2013年 | 2241篇 |
2012年 | 638篇 |
2011年 | 336篇 |
2010年 | 247篇 |
2009年 | 291篇 |
2008年 | 304篇 |
2007年 | 309篇 |
2006年 | 258篇 |
2005年 | 284篇 |
2004年 | 219篇 |
2003年 | 206篇 |
2002年 | 204篇 |
2001年 | 187篇 |
2000年 | 165篇 |
1999年 | 87篇 |
1998年 | 72篇 |
1997年 | 54篇 |
1996年 | 56篇 |
1995年 | 40篇 |
1994年 | 34篇 |
1993年 | 35篇 |
1992年 | 34篇 |
1991年 | 26篇 |
1990年 | 31篇 |
1989年 | 25篇 |
1988年 | 17篇 |
1987年 | 16篇 |
1986年 | 8篇 |
1985年 | 12篇 |
1984年 | 13篇 |
1983年 | 17篇 |
1982年 | 8篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 6篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1976年 | 3篇 |
1975年 | 4篇 |
排序方式: 共有8458条查询结果,搜索用时 9 毫秒
941.
In an earlier article (Kulkarni and Paranjape 1984) we proposed a procedure based on Andrews' function plot technique for the quality control of multivariate process. It was shown that this procedure may lead to an erroneous conclusions regarding the status of the process. This article presents an improved method which avoids the above drawback. A heuristic justification is provided to show that the new method is free from the error. Simulation studies are carried out to support the claim. An example is included to illustrate the use of the new technique. 相似文献
942.
943.
Alan. Winterbottom 《统计学通讯:模拟与计算》2013,42(6):599-609
Harley (1954) gave asymptotic expansions for the distributio function and for percentiles of the distribution of the bivariate normal sample correlation coefficient. To the stated order of approximation these expansions were incomplete in that contributions from some higher cumulants were not taken into account. In this article the completed expansions are given together with an asymptotic expansion yielding approximate confidence limits for the population correlation coefficient. Numerical comparisons indicate that asymptotic expansions are superior to other suggested approximate methods 相似文献
944.
In this study, the robustness of power and significance level of several statistical testing methods was evaluated under the assumption that the test populations were from Poisson, negative binomial, or geometric distributions. The F-ratio test, with or without appropriate transformations, was shown to be both safe and robust for all distributions examined. 相似文献
945.
In this paper a test statistic which is a modification of the W statistic for testing the goodness of fit for the two paremeter extreme value (smallest element) distribution is proposed. The test statistic Is obtained as the ratio of two linear estimates of the scale parameter. It Is shown that the suggested statistic is computationally simple and has good power properties. Percentage points of the statistic are obtained by performing Monte Carlo experiments. An example is given to illustrate the test procedure. 相似文献
946.
947.
Zhaozhi Fan 《统计学通讯:理论与方法》2013,42(2):245-255
ABSTRACT In finance, economics, statistical physics, signal processing, telecommunications, etc., we frequently meet data sets with outliers that transport important information. α-stable distributions are found more suitable in modeling these kind of data. But the lack of simple and effective methods of estimating their parameters limited their applications to wider variety of fields. In this article we develop an unbiased estimator for the stable index α. With the structure of U-statistic, it inherits all the good statistical properties from U-statistics. A consistent estimator of its asymptotic variance is provided. The asymptotic normality of the given estimator holds when using the estimated variance for standardization. Simulation studies are performed. The results support our theory. 相似文献
948.
949.
950.