全文获取类型
收费全文 | 502篇 |
免费 | 12篇 |
专业分类
管理学 | 45篇 |
民族学 | 5篇 |
人口学 | 27篇 |
理论方法论 | 74篇 |
社会学 | 310篇 |
统计学 | 53篇 |
出版年
2022年 | 3篇 |
2021年 | 3篇 |
2020年 | 9篇 |
2019年 | 14篇 |
2018年 | 16篇 |
2017年 | 23篇 |
2016年 | 21篇 |
2015年 | 11篇 |
2014年 | 12篇 |
2013年 | 91篇 |
2012年 | 10篇 |
2011年 | 16篇 |
2010年 | 7篇 |
2009年 | 8篇 |
2008年 | 12篇 |
2007年 | 17篇 |
2006年 | 11篇 |
2005年 | 9篇 |
2004年 | 16篇 |
2003年 | 5篇 |
2002年 | 9篇 |
2001年 | 14篇 |
2000年 | 10篇 |
1999年 | 14篇 |
1998年 | 16篇 |
1997年 | 7篇 |
1996年 | 10篇 |
1995年 | 6篇 |
1994年 | 3篇 |
1993年 | 5篇 |
1992年 | 5篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1989年 | 6篇 |
1988年 | 8篇 |
1986年 | 5篇 |
1985年 | 6篇 |
1984年 | 5篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1981年 | 7篇 |
1980年 | 6篇 |
1978年 | 7篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1973年 | 4篇 |
1969年 | 3篇 |
1966年 | 3篇 |
排序方式: 共有514条查询结果,搜索用时 15 毫秒
71.
72.
73.
74.
75.
This article investigates the impact of performance, as measuredby the OMB performance budgeting initiative called PerformanceAssessment Rating Tool (PART), on recommendations in the President'sbudget. In a multivariate analysis using data from the FY 2005budget, with appropriate controls for the political contentof programs, we find that the PART scores have a statisticallysignificant impact on budget decisions within OMB. We find thatPART scores have a larger impact on small and medium sized programsthan on large programs. We also find that the "results" componentof PART scores has a smaller impact on budget decisions thanthe "program purpose" component, a finding which tends to contradictthe goal of performance budgeting to redirect resources to programsthat produce results. The relative unimportance of the "results"component may be due to the lack of good outcome measures formost programs in PART. 相似文献
76.
Ralph C. Ward Leonard Egede Viswanathan Ramakrishnan Lewis Frey Robert Neal Axon Clara Libby E. Dismuke 《统计学通讯:理论与方法》2013,42(18):4642-4655
AbstractResearch involving administrative healthcare data to study patient outcomes requires the investigator to account for the patient’s disease burden in order to reduce the potential for biased results. Here we develop a comorbidity summary score based on variable importance measures derived from several statistical and machine learning methods and show it has superior predictive performance to the Elixhauser and Charlson indices when used to predict 1-year, 5-year, and 10-year mortality. We used two large Veterans Administration cohorts to develop and validate the summary score and compared predictive performance using the area under ROC curve (AUC) and the Brier score. 相似文献
77.
In a k-way analysis of variance model, the major concern is testing for main effects and for the presence of interaction between the factors. When the assumptions of normality and equal variances are satisfied, the appropriate test to use is the usual F-test for ANOVA. However, when the normality assumption is not satisfied then a robust or nonparametric test is needed to conduct the analysis. In this paper a nonparametric method based on cell counts is proposed. Each cell is divided into L subcells based on predetermined outpoints and the resulting frequencies are laid out in a contingency table. Then the Pearson x2 and tne likelihood ratio tests are performed. A comparison with the classical ANOVA F-test indicates that the proposed method is preferable when the data comes from a thick-tailed highly skewed distribution. 相似文献
78.
The statistical properties of control charts are usually evaluated under the assumption that the observations from the process are independent. For many processes however, observations which are closely spaced in time will be correlated. This paper considers EWMA and CUSUM control charts for the process mean when the observations are from an AR(1) process with additional random error. This simple model may be a reasonable model for many processes encountered in practice. The ARL and steady state ARL of the EWMA and CUSUM charts are evaluated numerically using an integral equation approach and a Markov chain approach. The numerical results show that correlation can have a significant effect on the properties of these charts. Tables are given to aid in the design of these charts when the observations follow the assumed model. 相似文献
79.
Diana M. Reindl Tera McIntosh Rhiannon Lewis Lauren Gellar 《Journal of gay & lesbian social services》2020,32(3):377-392
Abstract“Women who have sex with women” or WSW have unique perspectives within the LBGTQ spectrum. The purpose of this study included documenting perceptions, feelings, and experiences among WSW. Thirty-seven women participated in six focus groups, ages ranged from 20–64 years. Responses were transcribed and thematically coded. Four themes emerged as influencing factors: shame and fear, community, gender roles, and normalcy. Each major theme produced minor themes providing a context within major themes. Results offer valuable insights that can assist community members, health professionals, and scientists to better appraise the disparities and stigma impacting social and emotional well-being among WSW. 相似文献
80.