全文获取类型
收费全文 | 320篇 |
免费 | 30篇 |
国内免费 | 1篇 |
专业分类
管理学 | 28篇 |
民族学 | 1篇 |
人口学 | 12篇 |
丛书文集 | 25篇 |
理论方法论 | 20篇 |
综合类 | 107篇 |
社会学 | 47篇 |
统计学 | 111篇 |
出版年
2022年 | 2篇 |
2020年 | 1篇 |
2019年 | 6篇 |
2018年 | 8篇 |
2017年 | 11篇 |
2016年 | 10篇 |
2015年 | 15篇 |
2014年 | 21篇 |
2013年 | 30篇 |
2012年 | 15篇 |
2011年 | 18篇 |
2010年 | 19篇 |
2009年 | 25篇 |
2008年 | 16篇 |
2007年 | 13篇 |
2006年 | 11篇 |
2005年 | 7篇 |
2004年 | 2篇 |
2003年 | 3篇 |
2002年 | 16篇 |
2001年 | 11篇 |
2000年 | 5篇 |
1999年 | 4篇 |
1998年 | 3篇 |
1997年 | 5篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1985年 | 12篇 |
1984年 | 4篇 |
1983年 | 7篇 |
1982年 | 7篇 |
1981年 | 6篇 |
1980年 | 6篇 |
1979年 | 8篇 |
1978年 | 7篇 |
1977年 | 1篇 |
排序方式: 共有351条查询结果,搜索用时 562 毫秒
181.
周筱娟 《江汉大学学报(人文科学版)》2010,29(1):101-104
语言静态是相对的,动态是绝对的。当下“猪流感”到“甲型H1N1流感”术语变更的实际情形表明,语言生成会经过“基础、修正、生成”的直线过程,经受从言语到语言的心理认知过程。 相似文献
182.
应急物流的高效运作能够降低突发事件造成的危害,因而得到了理论界的广泛关注。鉴于甲流感疫情下我国防控工作的严峻性,在指出我国现阶段应急物流中存在的问题并提出相关建议后,构建了疫情防控工作下的应急物流体系,并对每个流程做了详细阐述。 相似文献
183.
This paper considers regression analysis of multivariate panel count data with the focus on variable selection and estimation of significant covariate effects. For the problem, we adopt the penalized estimating equation approach with a focus on the use of the seamless‐$L_0$ penalty. The proposed approach selects variables and estimates regression coefficients simultaneously and the asymptotic properties of the resulting estimates are established. The procedure can be easily carried out with the Newton–Raphson algorithm and is evaluated by simulation studies. Also it is applied to a motivating data set arising from a skin cancer study. The Canadian Journal of Statistics 41: 368–385; 2013 © 2013 Statistical Society of Canada 相似文献
184.
185.
Damodar Gujarati 《The American statistician》2013,67(1):50-52
Elementary inductive proofs are presented for the binomial approximation to the hypergeometric distribution, the density of an order statistic, and the distribution of when X 1, ···, X n are a sample from N (μ, 1). 相似文献
186.
Fabio Braggion 《Journal of the European Economic Association》2011,9(6):1053-1081
In this paper, I study the impact of managers’ affiliations with the Freemasonry on the performances of companies. Using a unique data set of 412 companies quoted on the London Stock Exchange between 1895 and 1902, I find that young and small firms run by Masonic managers exhibited larger leverage ratios. These companies earned higher profits, although the effect is not statistically significant. Large publicly quoted corporations managed by Freemasons instead had lower profits and lower Tobin’s Q. I discuss the issue of the endogeneity of Freemasonry membership, and I use four different approaches to partially address this. 相似文献
187.
188.
Duration analysis in longitudinal studies with intermittent observation times and losses to followup
We consider the analysis of spell durations observed in event history studies where members of the study panel are seen intermittently. Challenges for analysis arise because losses to followup are frequently related to previous event history, and spells typically overlap more than one observation period. We provide methods of estimation based on inverse probability of censoring weighting for parametric and semiparametric Cox regression models. Selection of panel members through a complex survey design is also addressed, and the methods are illustrated in an analysis of jobless spell durations based on data from the Statistics Canada Survey of Labour and Income Dynamics. The Canadian Journal of Statistics 40: 1–21; 2012 © 2012 Statistical Society of Canada 相似文献
189.
190.
Kung-Jong Lui 《Journal of the Korean Statistical Society》2018,47(1):99-111
When comparing two experimental treatments with a placebo, we focus our attention on interval estimation of the proportion ratio (PR) of patient responses under a three-period crossover design. We propose a random effects exponential multiplicative risk model and derive asymptotic interval estimators in closed form for the PR between treatments and placebo. Using Monte Carlo simulations, we compare the performance of these interval estimators in a variety of situations. We use the data comparing two different doses of an analgesic with placebo for the relief of primary dysmenorrhea to illustrate the use of these interval estimators and the difference in estimates of the PR and odds ratio (OR) when the underlying relief rates are not small. 相似文献