全文获取类型
收费全文 | 88826篇 |
免费 | 2948篇 |
国内免费 | 4篇 |
专业分类
管理学 | 12217篇 |
民族学 | 529篇 |
人才学 | 25篇 |
人口学 | 6809篇 |
丛书文集 | 517篇 |
理论方法论 | 9349篇 |
综合类 | 2107篇 |
社会学 | 41480篇 |
统计学 | 18745篇 |
出版年
2023年 | 508篇 |
2021年 | 562篇 |
2020年 | 1520篇 |
2019年 | 2205篇 |
2018年 | 2059篇 |
2017年 | 3127篇 |
2016年 | 2358篇 |
2015年 | 2050篇 |
2014年 | 2633篇 |
2013年 | 18842篇 |
2012年 | 2293篇 |
2011年 | 2076篇 |
2010年 | 1917篇 |
2009年 | 2160篇 |
2008年 | 1986篇 |
2007年 | 1787篇 |
2006年 | 2049篇 |
2005年 | 2240篇 |
2004年 | 2128篇 |
2003年 | 1844篇 |
2002年 | 1957篇 |
2001年 | 1936篇 |
2000年 | 1736篇 |
1999年 | 1653篇 |
1998年 | 1491篇 |
1997年 | 1332篇 |
1996年 | 1291篇 |
1995年 | 1300篇 |
1994年 | 1275篇 |
1993年 | 1265篇 |
1992年 | 1243篇 |
1991年 | 1186篇 |
1990年 | 1155篇 |
1989年 | 1017篇 |
1988年 | 1078篇 |
1987年 | 975篇 |
1986年 | 858篇 |
1985年 | 1039篇 |
1984年 | 1091篇 |
1983年 | 986篇 |
1982年 | 915篇 |
1981年 | 838篇 |
1980年 | 802篇 |
1979年 | 847篇 |
1978年 | 759篇 |
1977年 | 684篇 |
1976年 | 647篇 |
1975年 | 621篇 |
1974年 | 514篇 |
1973年 | 423篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
331.
332.
John S. J. HSU 《Revue canadienne de statistique》1995,23(4):399-410
This paper presents a new Laplacian approximation to the posterior density of η = g(θ). It has a simpler analytical form than that described by Leonard et al. (1989). The approximation derived by Leonard et al. requires a conditional information matrix Rη to be positive definite for every fixed η. However, in many cases, not all Rη are positive definite. In such cases, the computations of their approximations fail, since the approximation cannot be normalized. However, the new approximation may be modified so that the corresponding conditional information matrix can be made positive definite for every fixed η. In addition, a Bayesian procedure for contingency-table model checking is provided. An example of cross-classification between the educational level of a wife and fertility-planning status of couples is used for explanation. Various Laplacian approximations are computed and compared in this example and in an example of public school expenditures in the context of Bayesian analysis of the multiparameter Fisher-Behrens problem. 相似文献
333.
This article defines and describes the Calgary Family Intervention Model (CFIM). CFIM is an organizing framework conceptualizing the intersect between a particular domain (i.e., cognitive, affective, or behavioral) of family functioning and a specific intervention offered by a health professional. Examples and discussion of interventions such as storying the illness experience, encouraging respite, and asking interventive questions are presented. CFIM is one way that health professionals can conceptualize about change. 相似文献
334.
Suzanne T. Ortega David R. Johnson Peter G. Beeson Betty J. Craft 《Rural sociology》1994,59(4):598-619
Abstract This paper examines rural/urban differences and trends in mental health during the farm crisis of the 1980s in a large panel sample from a midwestern state. A community research perspective, which attributes differences to life styles, culture, and community context, is contrasted with an economic stress perspective, which focuses on individual differences in economic circumstances as determinants of rural-urban differences in mental health. Survey samples from 1981, 1986, and 1989 are used to examine differences among seven categories of community type. Multiple regression analysis of the trend and panel data provide support for both the individual economic distress and community context models. 相似文献
335.
336.
337.
Bradley R. Schiller 《Journal of Labor Research》1994,15(4):317-329
Federal minimum wage statutes cover only 70 percent of the work force and 30 percent of all employers. State laws are designed
to close some of these coverage gaps and in some cases to set higher wage floors. Hence, differences in state wage floors
and coverage should affect employment rates and wage distributions, particularly among low-skilled workers. Evidence from
the National Longitudinal Ssurveys of Youth is mixed, however: State wage floors appear to have no impact on youth employment
or entry wages, but coverage exemptions appear to increase both employment and wages. These observations underscore the need
to include state provisions in models of minimum wage impacts, particularly for later periods (e.g., 1988–1991) when state
wage floors were relatively higher. 相似文献
338.
339.
In this article, we conduct a textual analysis of Edith Wharton's 1911 novel, Ethan Frome . We offer three readings. The first presents Wharton's account of illness through a framework developed foru decades later by Talcott Parsons. Wharton's sick role was less medico-centric than Parsons; it emphasized the importance of class, gender and community in defining and legitimizing the sick role. Our second reading explores the socially constructed nature of roles in illness. The sick role as portrayed by Wharton is not the social fact later conceived by Parsons, but a social construct with no determinate reference beyond that which the local community is willing to grant it. Our third reading examines the social context, particularly the power relations, within which this story of illness has been constructed. 相似文献
340.