全文获取类型
收费全文 | 11050篇 |
免费 | 100篇 |
国内免费 | 3篇 |
专业分类
管理学 | 1723篇 |
民族学 | 40篇 |
人才学 | 2篇 |
人口学 | 932篇 |
丛书文集 | 48篇 |
理论方法论 | 1007篇 |
综合类 | 114篇 |
社会学 | 5582篇 |
统计学 | 1705篇 |
出版年
2023年 | 61篇 |
2020年 | 153篇 |
2019年 | 203篇 |
2018年 | 208篇 |
2017年 | 252篇 |
2016年 | 230篇 |
2015年 | 159篇 |
2014年 | 225篇 |
2013年 | 1827篇 |
2012年 | 272篇 |
2011年 | 285篇 |
2010年 | 229篇 |
2009年 | 224篇 |
2008年 | 278篇 |
2007年 | 276篇 |
2006年 | 287篇 |
2005年 | 279篇 |
2004年 | 247篇 |
2003年 | 223篇 |
2002年 | 257篇 |
2001年 | 214篇 |
2000年 | 227篇 |
1999年 | 204篇 |
1998年 | 183篇 |
1997年 | 180篇 |
1996年 | 196篇 |
1995年 | 170篇 |
1994年 | 182篇 |
1993年 | 175篇 |
1992年 | 184篇 |
1991年 | 200篇 |
1990年 | 210篇 |
1989年 | 178篇 |
1988年 | 187篇 |
1987年 | 169篇 |
1986年 | 150篇 |
1985年 | 157篇 |
1984年 | 182篇 |
1983年 | 169篇 |
1982年 | 133篇 |
1981年 | 125篇 |
1980年 | 116篇 |
1979年 | 134篇 |
1978年 | 111篇 |
1977年 | 98篇 |
1976年 | 107篇 |
1975年 | 69篇 |
1974年 | 86篇 |
1973年 | 72篇 |
1970年 | 50篇 |
排序方式: 共有10000条查询结果,搜索用时 47 毫秒
41.
42.
The effect of 1980s tort reform legislation on general liability and medical malpractice insurance 总被引:1,自引:1,他引:0
W. Kip Viscusi Richard J. Zeckhauser Patricia Born Glenn Blackmon 《Journal of Risk and Uncertainty》1993,6(2):165-186
A large number of states adopted tort reforms in the mid-1980s to limit the dramatic surge in insurance losses and premiums. Evidence based on liability insurance data by state indicates that these reforms substantially influenced general liability insurance. The levels of losses, premiums, and loss ratios (a measure of insurance profitability) all reflected the impact of the reforms. The large-scale reform efforts in 1986 were particularly influential. Medical malpractice insurance was much less sensitive to the reform efforts. 相似文献
43.
44.
Richard A. Wright 《The American Sociologist》1995,26(4):41-48
Much debate over the years has centered around whether there was ever a “golden past” for the introductory sociology textbook,
when high quality books influenced the development of scholarship and thinking. Some empirical evidence is added to this debate
through an analysis of the citations to introductory sociology textbooks in all the articles and research notes appearing
in theAmerican Journal of Sociology, theAmerican Sociological Review, andSocial Forces from 1960 to 1969 and from 1984 to 1993. The data show that, although seldom cited in recent journals, introductory sociology
textbooks were often cited in the earlier period. The article concludes with some thoughts about why introductory sociology
textbooks have had a declining influence on scholarship. 相似文献
45.
46.
Peter G. W. Schouten 《Journal of marital and family therapy》1994,20(1):53-60
The article examines some issues raised in Gavin and Wamboldt's (1992) recent study on the Family-of-Origin Scale (FOS) (Hovestadt, Anderson, Piercy, Cochran, & Fine, 1985). The discussion centers on unresolved concerns regarding the validity and utility of the FOS and on unsubstantiated and potentially misleading claims made in the Gavin and Wamboldt article. A case is made for conceptual and methodological precision in the study of family phenomena. 相似文献
47.
Sharon Klayman Farber M.S.W. 《Clinical Social Work Journal》1991,19(1):95-98
The author responds to the article by Annaclare van Dalen (1989), disputing her statement that there is little in the literature about the emotional consequences of child abuse. The author reviews the pertinent literature, which is abundant. The author disagrees with van Dalen's statement that the child experiences physical abuse outside the body, and with the statement that the child experiences sexual abuse as pleasurable. In addition the author disagrees with van Dalen's sharp differentiation between physical abuse and sexual abuse, and proposes that sexual abuse be regarded as a variant of physical abuse. 相似文献
48.
Charles W. Griffiths Chris Dockins Nicole Owens Nathalie B. Simon Daniel A. Axelrad 《Risk analysis》2002,22(4):679-688
To quantify the health benefits of environmental policies, economists generally require estimates of the reduced probability of illness or death. For policies that reduce exposure to carcinogenic substances, these estimates traditionally have been obtained through the linear extrapolation of experimental dose-response data to low-exposure scenarios as described in the U.S. Environmental Protection Agency's Guidelines for Carcinogen Risk Assessment (1986). In response to evolving scientific knowledge, EPA proposed revisions to the guidelines in 1996. Under the proposed revisions, dose-response relationships would not be estimated for carcinogens thought to exhibit nonlinear modes of action. Such a change in cancer-risk assessment methods and outputs will likely have serious consequences for how benefit-cost analyses of policies aimed at reducing cancer risks are conducted. Any tendency for reduced quantification of effects in environmental risk assessments, such as those contemplated in the revisions to EPA's cancer-risk assessment guidelines, impedes the ability of economic analysts to respond to increasing calls for benefit-cost analysis. This article examines the implications for benefit-cost analysis of carcinogenic exposures of the proposed changes to the 1986 Guidelines and proposes an approach for bounding dose-response relationships when no biologically based models are available. In spite of the more limited quantitative information provided in a carcinogen risk assessment under the proposed revisions to the guidelines, we argue that reasonable bounds on dose-response relationships can be estimated for low-level exposures to nonlinear carcinogens. This approach yields estimates of reduced illness for use in a benefit-cost analysis while incorporating evidence of nonlinearities in the dose-response relationship. As an illustration, the bounding approach is applied to the case of chloroform exposure. 相似文献
49.
We discuss the issue of using benchmark doses for quantifying (excess) risk associated with exposure to environmental hazards. The paradigm of low-dose risk estimation in dose-response modeling is used as the primary application scenario. Emphasis is placed on making simultaneous inferences on benchmark doses when data are in the form of proportions, although the concepts translate easily to other forms of outcome data. 相似文献
50.
Chappell Neena; Funk Laura; Carson Arlene; MacKenzie Patricia; Stanwick Richard 《Community Development Journal》2006,41(3):352-366
The need for multilevel, comprehensive health promotion programmeshas become widely accepted, as has the importance of communityapproaches. However, many health promotion programmes focuson change at the individual level, no doubt partly due to thedifficulty of implementing all-inclusive health promotion. Thispaper discusses two strategies for guiding multilevel projects:multiple methods for community assessment and charting projectactivities by level of change (a possibility framework). Thesestrategies help ensure a multilevel focus and provide valuableinformation that can assist with the implementation of multilevelhealth promotion research projects in specific community contexts.Our primary purpose, therefore, is not to focus on theory orresearch findings. Rather, our goal is to make visible two strategiesthat have been helpful in one health promotion research projectin Victoria, British Columbia, Canada. 相似文献