全文获取类型
收费全文 | 7808篇 |
免费 | 120篇 |
国内免费 | 2篇 |
专业分类
管理学 | 1221篇 |
民族学 | 23篇 |
人口学 | 684篇 |
丛书文集 | 21篇 |
理论方法论 | 677篇 |
综合类 | 91篇 |
社会学 | 3930篇 |
统计学 | 1283篇 |
出版年
2020年 | 89篇 |
2019年 | 116篇 |
2018年 | 141篇 |
2017年 | 166篇 |
2016年 | 151篇 |
2015年 | 106篇 |
2014年 | 157篇 |
2013年 | 1312篇 |
2012年 | 186篇 |
2011年 | 197篇 |
2010年 | 152篇 |
2009年 | 146篇 |
2008年 | 184篇 |
2007年 | 177篇 |
2006年 | 194篇 |
2005年 | 181篇 |
2004年 | 154篇 |
2003年 | 126篇 |
2002年 | 148篇 |
2001年 | 155篇 |
2000年 | 174篇 |
1999年 | 142篇 |
1998年 | 137篇 |
1997年 | 121篇 |
1996年 | 127篇 |
1995年 | 130篇 |
1994年 | 139篇 |
1993年 | 130篇 |
1992年 | 141篇 |
1991年 | 155篇 |
1990年 | 172篇 |
1989年 | 144篇 |
1988年 | 158篇 |
1987年 | 136篇 |
1986年 | 132篇 |
1985年 | 133篇 |
1984年 | 143篇 |
1983年 | 132篇 |
1982年 | 97篇 |
1981年 | 80篇 |
1980年 | 87篇 |
1979年 | 113篇 |
1978年 | 89篇 |
1977年 | 69篇 |
1976年 | 81篇 |
1975年 | 52篇 |
1974年 | 75篇 |
1973年 | 52篇 |
1971年 | 43篇 |
1970年 | 44篇 |
排序方式: 共有7930条查询结果,搜索用时 15 毫秒
21.
Georg W. Oesterdiekhoff 《Soziologie》2006,35(1):26-41
The modernization and industrialization of the developing countries, especially in Asia and Latin America in the last 30 years, are facts that seem to contradict to the basic assumptions of the ruling sociological theories of development. The rise of the developing countries is a main part of the process called “globalization”. The different parts of the world are getting closer to each other by trade, industrial investments, tourism, political influences and co-operations on different levels. Theories of dependence and similar approaches don’t fit these social developments and seem to have gotten a status of falsified, refused, neglected or simply forgotten theories. “Sociological Theory” is till this day not ready to answer the open questions and to fill the scientific gap. The article shows that the classical theory of modernization is capable to describe and explain the process of modernization not only in Europe but also in the developing countries. Modernization theory is the central and encompassing theory of development, no matter whether Europe in the last 200 years, the present-day developing countries or processes of globalization is the chosen and focused subject of research activities. 相似文献
22.
23.
24.
W. Andrew Collins 《Journal of research on adolescence》2003,13(1):1-24
Adolescents' romantic relationships have attracted popular interest, but, until recently, little scientific curiosity. Research has been impeded by erroneous assumptions that adolescent relationships are trivial and transitory, that they provide little information beyond measures of the influence of parent‐child and peer relationships, and that their impact is primarily associated with problems of behavior and adjustment. This article proposes that distinguishing five features of romantic relationships (involvement, partner selection, relationship content, quality, and cognitive and emotional processes) is essential to describing adolescents' relationships and their developmental significance. These distinctions also help to clarify the role of context, age‐related variations, and individual differences in the impact of romantic experiences. Research is needed to illuminate questions of how and under what conditions romantic relationships affect individual development and how romantic and other close relationships jointly influence developmental trajectories during adolescence. 相似文献
25.
W. Stute 《Journal of statistical planning and inference》1992,30(3):293-305
We propose a new modified (biased) cross-validation method for adaptively determining the bandwidth in a nonparametric density estimation setup. It is shown that the method provides consistent minimizers. Some simulation results are reported on which compare the small sample behavior of the new and the classical cross-validation selectors. 相似文献
26.
The authors investigated the prevalence of recurrent pain in a college student sample. Of the 1,564 students surveyed, 467 (29%) indicated that they had experienced recurrent pain at an intensity that was mostly in the mild-to-moderate range. Students who reported having recurrent pain were significantly older and more depressed than students who did not indicate they suffered from recurrent pain. Pain intensity was positively correlated (r = .14) with depression among the students who reported having recurrent pain. Implications of the findings for future research, treatment, and health promotion efforts are discussed. 相似文献
27.
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
28.
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
29.
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
30.
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