全文获取类型
收费全文 | 5911篇 |
免费 | 131篇 |
国内免费 | 52篇 |
专业分类
管理学 | 438篇 |
民族学 | 12篇 |
人口学 | 75篇 |
丛书文集 | 318篇 |
理论方法论 | 188篇 |
综合类 | 2083篇 |
社会学 | 351篇 |
统计学 | 2629篇 |
出版年
2024年 | 4篇 |
2023年 | 44篇 |
2022年 | 48篇 |
2021年 | 68篇 |
2020年 | 97篇 |
2019年 | 131篇 |
2018年 | 188篇 |
2017年 | 282篇 |
2016年 | 151篇 |
2015年 | 186篇 |
2014年 | 246篇 |
2013年 | 987篇 |
2012年 | 409篇 |
2011年 | 310篇 |
2010年 | 240篇 |
2009年 | 287篇 |
2008年 | 259篇 |
2007年 | 277篇 |
2006年 | 242篇 |
2005年 | 290篇 |
2004年 | 260篇 |
2003年 | 225篇 |
2002年 | 182篇 |
2001年 | 185篇 |
2000年 | 125篇 |
1999年 | 73篇 |
1998年 | 54篇 |
1997年 | 41篇 |
1996年 | 20篇 |
1995年 | 17篇 |
1994年 | 31篇 |
1993年 | 20篇 |
1992年 | 20篇 |
1991年 | 13篇 |
1990年 | 11篇 |
1989年 | 8篇 |
1988年 | 12篇 |
1987年 | 7篇 |
1986年 | 4篇 |
1985年 | 8篇 |
1984年 | 6篇 |
1983年 | 9篇 |
1982年 | 8篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 1篇 |
排序方式: 共有6094条查询结果,搜索用时 8 毫秒
1.
2.
Multiparameter evidence synthesis in epidemiology and medical decision-making: current approaches 总被引:1,自引:0,他引:1
A. E. Ades A. J. Sutton 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2006,169(1):5-35
Summary. Alongside the development of meta-analysis as a tool for summarizing research literature, there is renewed interest in broader forms of quantitative synthesis that are aimed at combining evidence from different study designs or evidence on multiple parameters. These have been proposed under various headings: the confidence profile method, cross-design synthesis, hierarchical models and generalized evidence synthesis. Models that are used in health technology assessment are also referred to as representing a synthesis of evidence in a mathematical structure. Here we review alternative approaches to statistical evidence synthesis, and their implications for epidemiology and medical decision-making. The methods include hierarchical models, models informed by evidence on different functions of several parameters and models incorporating both of these features. The need to check for consistency of evidence when using these powerful methods is emphasized. We develop a rationale for evidence synthesis that is based on Bayesian decision modelling and expected value of information theory, which stresses not only the need for a lack of bias in estimates of treatment effects but also a lack of bias in assessments of uncertainty. The increasing reliance of governmental bodies like the UK National Institute for Clinical Excellence on complex evidence synthesis in decision modelling is discussed. 相似文献
3.
焦凤梅 《湖北民族学院学报(哲学社会科学版)》2002,20(5):85-88
20世纪90年代在社会民主主义复兴的过程中,英国和法国由于竞选方式、政策策略等一系列方面存在显著差别,被认为是社会民主主义复兴的两种典型模式,对英国道路与法国道路的相同之处和不同之处进行比较,说明二者存在共同性和差异性的原因。 相似文献
4.
Mark S. Pearce Heather O. Dickinson Murray Aitkin Louise Parker 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2002,165(3):523-548
Summary. This study investigates whether there was evidence of increasing risk of still-birth with increasing paternal exposure to ionizing radiation received during employment at the Sellafield nuclear installation before the child was conceived. A significant positive association is found between the total paternal preconceptional exposure to external ionizing radiation and the risk of still-birth (after adjustment for year of birth, social class, birth order and paternal age, odds ratio at 100 mSv 1.24 (95% confidence interval 1.04–1.45)). A summary of the principal scientific findings of this study has been published in the Lancet . This paper describes in detail the statistical methods that were used in the investigation and presents the results in full. 相似文献
5.
《Australian & New Zealand Journal of Statistics》2002,44(4):505-506
Books reviewed:
M Hollander and D Wolfe, Nonparametric Statistical Methods
T Leonard and J.S.J Hsu, Bayesian Methods 相似文献
M Hollander and D Wolfe, Nonparametric Statistical Methods
T Leonard and J.S.J Hsu, Bayesian Methods 相似文献
6.
Modelling daily multivariate pollutant data at multiple sites 总被引:7,自引:1,他引:6
Gavin Shaddick Jon Wakefield 《Journal of the Royal Statistical Society. Series C, Applied statistics》2002,51(3):351-372
Summary. This paper considers the spatiotemporal modelling of four pollutants measured daily at eight monitoring sites in London over a 4-year period. Such multiple-pollutant data sets measured over time at multiple sites within a region of interest are typical. Here, the modelling was carried out to provide the exposure for a study investigating the health effects of air pollution. Alternative objectives include the design problem of the positioning of a new monitoring site, or for regulatory purposes to determine whether environmental standards are being met. In general, analyses are hampered by missing data due, for example, to a particular pollutant not being measured at a site, a monitor being inactive by design (e.g. a 6-day monitoring schedule) or because of an unreliable or faulty monitor. Data of this type are modelled here within a dynamic linear modelling framework, in which the dependences across time, space and pollutants are exploited. Throughout the approach is Bayesian, with implementation via Markov chain Monte Carlo sampling. 相似文献
7.
不同公司治理结构下财务导向模式的比较研究 总被引:2,自引:0,他引:2
李秉祥 《西安电子科技大学学报(社会科学版)》2002,12(1):52-56
公司治理结构决定其财务模式。论文以所有权和控制权表现形式不同 ,将现有公司治理结构分为外部监控型、内部监控型、家族控制型和转轨经济型 ,由此产生了经营者主导型、出资者主导型、业主主导型和内部人主导型的财务模式 ;并分析了我国公司治理结构与财务管理的现状、成因及发展趋向。对于寻找适合我国不同企业及同企业不同发展阶段的治理构架和财务模式奠定了基础 相似文献
8.
文章透析了监理单位的外部管理现状 ,内部运行机制及监理业务的竞争环境 ,并提出了相应的对策与建议 相似文献
9.
上市公司粉饰报表对我国经济的健康发展危害严重。上市公司粉饰报表的原因主要在于 :一是上市公司存在粉饰报表的内在动因 ,二是企业外部监督约束机制不健全。解决上市公司粉饰报表的问题 ,首先要加强会计人员的职业道德教育 ,其次要进一步完善上市公司的外部监管机制 相似文献
10.
Sets of relatively short time series arise in many situations. One aspect of their analysis may be the detection of outlying
series. We examine the performance of standard normal outlier tests applied to the means, or to simple functions of the means,
of AR(1) series, not necessarily of equal lengths. Although unequal lengths of series implies that the means have unequal
variances, that are only known approximately, it is shown that nominal significance levels hold good under most circumstances.
Thus a standard outlier test can usefully be applied, avoiding the complication of estimating the time series' parameters.
The test's power is affected by unequal lengths, being higher when the slippage occurs in one of the longer series 相似文献