全文获取类型
收费全文 | 29242篇 |
免费 | 483篇 |
国内免费 | 3篇 |
专业分类
管理学 | 3888篇 |
民族学 | 123篇 |
人才学 | 3篇 |
人口学 | 2550篇 |
丛书文集 | 135篇 |
教育普及 | 3篇 |
理论方法论 | 2613篇 |
综合类 | 303篇 |
社会学 | 14517篇 |
统计学 | 5593篇 |
出版年
2023年 | 146篇 |
2021年 | 144篇 |
2020年 | 395篇 |
2019年 | 534篇 |
2018年 | 674篇 |
2017年 | 898篇 |
2016年 | 656篇 |
2015年 | 508篇 |
2014年 | 682篇 |
2013年 | 5412篇 |
2012年 | 855篇 |
2011年 | 783篇 |
2010年 | 630篇 |
2009年 | 556篇 |
2008年 | 648篇 |
2007年 | 638篇 |
2006年 | 646篇 |
2005年 | 623篇 |
2004年 | 530篇 |
2003年 | 489篇 |
2002年 | 540篇 |
2001年 | 692篇 |
2000年 | 669篇 |
1999年 | 629篇 |
1998年 | 485篇 |
1997年 | 422篇 |
1996年 | 475篇 |
1995年 | 468篇 |
1994年 | 486篇 |
1993年 | 460篇 |
1992年 | 498篇 |
1991年 | 512篇 |
1990年 | 525篇 |
1989年 | 453篇 |
1988年 | 491篇 |
1987年 | 423篇 |
1986年 | 395篇 |
1985年 | 433篇 |
1984年 | 459篇 |
1983年 | 397篇 |
1982年 | 321篇 |
1981年 | 276篇 |
1980年 | 275篇 |
1979年 | 324篇 |
1978年 | 271篇 |
1977年 | 227篇 |
1976年 | 203篇 |
1975年 | 188篇 |
1974年 | 181篇 |
1973年 | 160篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
92.
93.
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
94.
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
95.
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
96.
D. Eric Schansberg 《Economic inquiry》1994,32(3):445-456
Despite extensive study concerning involuntary departures by U.S. House members, little has been said about voluntary departures from the House–-quit behavior. This paper has three primary purposes: (1) to establish a theoretical framework that models the full range of choices a representative faces in any given term, (2) to measure the impact of different variables that affect representatives' quit behavior, and (3) to explain why Republicans have been more likely to pursue higher office than their Democratic colleagues. 相似文献
97.
Melissa S. Waters R. Carter Hill William J. Moore Robert J. Newman 《Journal of Labor Research》1994,15(4):355-372
This paper estimates a simultaneous-equations model with public sector bargaining laws and union membership treated as jointly-determined
variables. The extent of public sector unionization has a significant positive influence on the passage of prolabor bargaining
legislation and bargaining legislation has strong, independent effects on the extent of public sector unionization.
We gratefully acknowledge the research support provided by Minbo Kim and Parisun Chantonahom. 相似文献
98.
Abstract Agroforestry, the practice of raising crops and trees together in ways that are mutually beneficial, provides farmers with an alternative to more conventional farming practices. In this paper, we apply Bourdieu's concepts of “field” and “habitus” in an attempt to better understand the practice of farming and the role that agroforestry may have in farming systems. Analysis is based on qualitative and quantitative interviews of farmers and other key informants in two regions, Fox‐Wyaconda Watershed in northeast Missouri and Scott County in southeast Missouri. Within the field of farming, farmers emphasized the importance of economic, family and rental relations. Important habitus considerations include different interpretations of what constitutes farming and what constitutes forestry. Based on Bourdieu's theoretical framework, we offer three alternative paths of social change that may lead to more widespread utilization of agroforestry. 相似文献
99.
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
100.
Glenn D. Walters 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1994,10(2):159-182
This paper describes the lifestyle model of gambling behavior in which compulsive gambling behavior is conceptualized as a lifestyle characterized by pseudoresponsibility, self-ascension, hypercompetitiveness, and social rule breaking/bending/ twisting. The underlying premise of this theory is that gambling behavior takes on the appearance of a lifestyle when it is viewed by the individual as a viable means of enhancing self-worth, minimizing personal insecurity, and controlling fear. Three primary areas of theoretical and research interest are covered in this paper: (1) the theoretical underpinnings of lifestyle theory; (2) the individual components (conditions, choice, cognition) of a gambling lifestyle; and (3) the developmental progression of a gambling lifestyle.The author would like to thank Henry Lesieur and anonymous reviewers of earlier versions of this paper for their helpful comments. The assertions and opinions contained herein are the private views of the author and should not be construed as official or as reflecting the views of the Federal Bureau of Prisons or United States Department of Justice. 相似文献