全文获取类型
收费全文 | 12968篇 |
免费 | 210篇 |
专业分类
管理学 | 1590篇 |
民族学 | 65篇 |
人口学 | 1113篇 |
丛书文集 | 67篇 |
教育普及 | 3篇 |
理论方法论 | 1116篇 |
综合类 | 136篇 |
社会学 | 6774篇 |
统计学 | 2314篇 |
出版年
2023年 | 67篇 |
2021年 | 70篇 |
2020年 | 165篇 |
2019年 | 252篇 |
2018年 | 300篇 |
2017年 | 416篇 |
2016年 | 317篇 |
2015年 | 226篇 |
2014年 | 303篇 |
2013年 | 2612篇 |
2012年 | 343篇 |
2011年 | 347篇 |
2010年 | 256篇 |
2009年 | 225篇 |
2008年 | 250篇 |
2007年 | 262篇 |
2006年 | 262篇 |
2005年 | 244篇 |
2004年 | 214篇 |
2003年 | 182篇 |
2002年 | 213篇 |
2001年 | 303篇 |
2000年 | 278篇 |
1999年 | 291篇 |
1998年 | 191篇 |
1997年 | 167篇 |
1996年 | 219篇 |
1995年 | 225篇 |
1994年 | 234篇 |
1993年 | 233篇 |
1992年 | 251篇 |
1991年 | 237篇 |
1990年 | 252篇 |
1989年 | 224篇 |
1988年 | 224篇 |
1987年 | 193篇 |
1986年 | 178篇 |
1985年 | 186篇 |
1984年 | 184篇 |
1983年 | 136篇 |
1982年 | 135篇 |
1981年 | 116篇 |
1980年 | 123篇 |
1979年 | 124篇 |
1978年 | 112篇 |
1977年 | 95篇 |
1976年 | 88篇 |
1975年 | 98篇 |
1974年 | 65篇 |
1973年 | 60篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
John D. Krumboltz 《The Career development quarterly》1993,42(2):143-148
Career and personal counseling are inextricably intertwined. Career problems have a strong emotional component. Career indecision and procrastination may be better interpreted as zeteophobia, the fear of career exploration. Trait and factor theory pictures career counseling as unrealistically simplistic and leads neophytes to view it as boring. Training all counselors to integrate career and personal counseling would lead to better service for clients. 相似文献
42.
43.
In the development of many diseases there are often associated random variables which continuously reflect the progress of a subject towards the final expression of the disease (failure). At any given time these processes, which we call stochastic covariates, may provide information about the current hazard and the remaining time to failure. Likewise, in situations when the specific times of key prior events are not known, such as the time of onset of an occult tumour or the time of infection with HIV-1, it may be possible to identify a stochastic covariate which reveals, indirectly, when the event of interest occurred. The analysis of carcinogenicity trials which involve occult tumours is usually based on the time of death or sacrifice and an indicator of tumour presence for each animal in the experiment. However, the size of an occult tumour observed at the endpoint represents data concerning tumour development which may convey additional information concerning both the tumour incidence rate and the rate of death to which tumour-bearing animals are subject. We develop a stochastic model for tumour growth and suggest different ways in which the effect of this growth on the hazard of failure might be modelled. Using a combined model for tumour growth and additive competing risks of death, we show that if this tumour size information is used, assumptions concerning tumour lethality, the context of observation or multiple sacrifice times are no longer necessary in order to estimate the tumour incidence rate. Parametric estimation based on the method of maximum likelihood is outlined and is applied to simulated data from the combined model. The results of this limited study confirm that use of the stochastic covariate tumour size results in more precise estimation of the incidence rate for occult tumours. 相似文献
44.
William A. Mueller D.M.D. 《Child and Adolescent Social Work Journal》1993,10(5):395-401
Dental caries in children is now recognized as a preventable disease. The use of fluoride and sealants has produced a major reduction in caries prevalence among school aged children in the United States and other countries. A portion of the child population who are educationally and socioeconomically disadvantaged are not fully receiving these benefits. Public policy, insurance and medicaid groups must be made aware of these preventative measures and strategies developed to implement them. 相似文献
45.
Neglected voices and excessive demands in feminist research 总被引:1,自引:1,他引:0
Shulamit Reinharz Ph.D. 《Qualitative sociology》1993,16(1):69-76
46.
47.
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
48.
Francis A. O’Connell 《Journal of Labor Research》1991,12(4):322-325
Readers wishing to correspond with Mr. O’Connell may do so through the editorial office of the Journal. 相似文献
49.
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
50.
Brian D. Loader Steve Muncer Roger Burrows Nicholas Pleace & Sara Nettleton 《International Journal of Social Welfare》2002,11(1):53-65
The advent of thousands of Usenet groups on the Internet, covering a vast range of medical and welfare issues and ostensibly devoted to the mutual social support of participating members, has raised the potential for the development of new forms of 'virtual' health care. This article critically analyses the use by people with diabetes of one such Usenet group. It seeks to establish, first, the extent to which such a site provides some demonstrable measure of social support to its participants. This is approached by undertaking a structural analysis of the site to identify the extent of usage, and the nature of supporting interventions using a fivefold classification (instrumental, informational, esteem and social companionship and other). Second, the article attempts to identify any disparity between the lay health-knowledge in evidence and biomedical opinions proffered by the use of a panel of consultant diabetiologists. The results of the analysis suggest that the diabetes newsgroup provides an example of an active forum for largely well-informed participants who routinely use the media as an aid to the reflexive management of their medical condition. It also raises the prospect of a renegotiated relationship between medical knowledge and lay experience based upon shared learning 相似文献