全文获取类型
收费全文 | 29079篇 |
免费 | 833篇 |
国内免费 | 3篇 |
专业分类
管理学 | 4153篇 |
民族学 | 135篇 |
人才学 | 4篇 |
人口学 | 2731篇 |
丛书文集 | 149篇 |
教育普及 | 2篇 |
理论方法论 | 2766篇 |
现状及发展 | 1篇 |
综合类 | 470篇 |
社会学 | 14586篇 |
统计学 | 4918篇 |
出版年
2021年 | 164篇 |
2020年 | 425篇 |
2019年 | 601篇 |
2018年 | 694篇 |
2017年 | 959篇 |
2016年 | 725篇 |
2015年 | 542篇 |
2014年 | 706篇 |
2013年 | 4647篇 |
2012年 | 951篇 |
2011年 | 936篇 |
2010年 | 721篇 |
2009年 | 628篇 |
2008年 | 703篇 |
2007年 | 747篇 |
2006年 | 722篇 |
2005年 | 703篇 |
2004年 | 650篇 |
2003年 | 562篇 |
2002年 | 633篇 |
2001年 | 754篇 |
2000年 | 726篇 |
1999年 | 649篇 |
1998年 | 498篇 |
1997年 | 461篇 |
1996年 | 453篇 |
1995年 | 428篇 |
1994年 | 422篇 |
1993年 | 421篇 |
1992年 | 475篇 |
1991年 | 456篇 |
1990年 | 411篇 |
1989年 | 419篇 |
1988年 | 402篇 |
1987年 | 382篇 |
1986年 | 344篇 |
1985年 | 410篇 |
1984年 | 407篇 |
1983年 | 375篇 |
1982年 | 328篇 |
1981年 | 262篇 |
1980年 | 264篇 |
1979年 | 299篇 |
1978年 | 265篇 |
1977年 | 240篇 |
1976年 | 212篇 |
1975年 | 244篇 |
1974年 | 200篇 |
1973年 | 167篇 |
1972年 | 143篇 |
排序方式: 共有10000条查询结果,搜索用时 734 毫秒
161.
162.
A. Baddeley R. Turner J. Møller M. Hazelton 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2005,67(5):617-666
Summary. We define residuals for point process models fitted to spatial point pattern data, and we propose diagnostic plots based on them. The residuals apply to any point process model that has a conditional intensity; the model may exhibit spatial heterogeneity, interpoint interaction and dependence on spatial covariates. Some existing ad hoc methods for model checking (quadrat counts, scan statistic, kernel smoothed intensity and Berman's diagnostic) are recovered as special cases. Diagnostic tools are developed systematically, by using an analogy between our spatial residuals and the usual residuals for (non-spatial) generalized linear models. The conditional intensity λ plays the role of the mean response. This makes it possible to adapt existing knowledge about model validation for generalized linear models to the spatial point process context, giving recommendations for diagnostic plots. A plot of smoothed residuals against spatial location, or against a spatial covariate, is effective in diagnosing spatial trend or co-variate effects. Q – Q -plots of the residuals are effective in diagnosing interpoint interaction. 相似文献
163.
E. Chiapello 《Sociologie du Travail》2005,47(3):362
In 2002, the European Union changed direction from its past efforts to harmonise European accounting systems and turned instead to a subcontractor, requiring listed European companies to adopt accounting standards drawn up by a private London-based organisation, the IASB (International Accounting Standards Board), which had until then had no public mandate. This decision was all the more significant because the EU has no institutional means of control over the IASB, although it was the first geographical group to decide to impose these standards on its businesses. IASB standards are rooted in the “anglo-saxon” tradition of standardisation for the financial markets, and the view of the enterprise they promote diverges from the accounting traditions of continental European capitalism. This article shows how the new standards are transforming the concept of enterprise, and examines the span of factors that brought about what is a major institutional change for European capitalism. — Special issue: New patterns of institutions. 相似文献
164.
165.
The completely random character of radioactive disintegration provides the basis of a strong justification for a Poisson linear model for single-photon emission computed tomography data, which can be used to produce reconstructions of isotope densities, whether by maximum likelihood or Bayesian methods. However, such a model requires the construction of a matrix of weights, which represent the mean rates of arrival at each detector of photons originating from each point within the body space. Two methods of constructing these weights are discussed, and reconstructions resulting from phantom and real data are presented. 相似文献
166.
167.
168.
169.
A nationally representative sample of respondents estimated their fatality risks from four types of natural disasters, and indicated whether they favored governmental disaster relief. For all hazards, including auto accident risks, most respondents assessed their risks as being below average, with one-third assessing them as average. Individuals from high-risk states, or with experience with disasters, estimate risks higher, though by less than reasonable calculations require. Four-fifths of our respondents favor government relief for disaster victims, but only one-third do for victims in high-risk areas. Individuals who perceive themselves at higher risk are more supportive of government assistance. 相似文献
170.
Rex Forehand Deborah J. Jones Gene H. Brody Lisa Armistead 《Journal of marriage and the family》2002,64(4):1012-1023
This study examined the unique and interactive roles of mother and teacher depressive symptoms in child adjustment in 277 African American single mother‐headed families, as well as whether the associations differed depending on the age and gender of the child. Findings revealed a significant association between maternal depressive symptoms and child depressive symptoms in girls, but not boys. Moreover, the combination of higher levels of both mother and teacher depressive symptoms was associated with the highest level of child depressive symptoms and, for younger children, externalizing symptoms. The importance of considering the multiple social contexts in which children interact is discussed. 相似文献