首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   12970篇
  免费   338篇
管理学   1684篇
民族学   55篇
人口学   1034篇
丛书文集   68篇
教育普及   3篇
理论方法论   1195篇
综合类   132篇
社会学   6882篇
统计学   2255篇
  2023年   66篇
  2021年   69篇
  2020年   168篇
  2019年   260篇
  2018年   276篇
  2017年   391篇
  2016年   280篇
  2015年   227篇
  2014年   307篇
  2013年   2573篇
  2012年   368篇
  2011年   355篇
  2010年   271篇
  2009年   249篇
  2008年   278篇
  2007年   279篇
  2006年   292篇
  2005年   270篇
  2004年   230篇
  2003年   211篇
  2002年   227篇
  2001年   314篇
  2000年   289篇
  1999年   308篇
  1998年   199篇
  1997年   184篇
  1996年   225篇
  1995年   230篇
  1994年   240篇
  1993年   232篇
  1992年   245篇
  1991年   233篇
  1990年   253篇
  1989年   216篇
  1988年   221篇
  1987年   190篇
  1986年   179篇
  1985年   186篇
  1984年   191篇
  1983年   139篇
  1982年   134篇
  1981年   123篇
  1980年   131篇
  1979年   125篇
  1978年   106篇
  1977年   90篇
  1976年   90篇
  1975年   94篇
  1974年   64篇
  1973年   57篇
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
991.
Abstract

Genital herpes virus infection is an important target for health education efforts because of its apparently rising incidence in the college student population and because it can have potentially serious psychological as well as medical consequences. In order to better understand the health education and counseling needs of students, the present study surveyed knowledge and attitudes about genital herpes of 190 university students using a gynecology clinic and of 161 students using a general medical clinic. The students were found to have a high degree of familiarity with the disease, its cause, and mode of transmission, but tended to view the consequences of the disease as more severe than is actually warranted by the common medical complications. There was some degree of misinformation about prevention and treatment of the disease and some negative attitudes about patients suffering from it, but the survey respondents endorsed a high level of responsible behavior with regard to the disease and expressed some optimism about the possibility of adapting to it. These findings suggest specific misconceptions about genital herpes that might be amenable to a mass education approach. They also suggest the need for a counseling program that centers around reasonable reassurance and appropriately positive psychological and medical management for newly diagnosed patients.  相似文献   
992.
This paper reviews qualitative data from academic research into prostitution, accounts from prostitutes themselves in the UK and Australia, and data from one of the authors' own research in New South Wales to analyse the ways in which female sex workers negotiate and construct their sense of themselves. This analysis is informed by the suggestion that, in the act of commercial sex, the prostitute's own body is being consumed by the client, which can be seen to place certain pressures on the relationship between sex workers' professional and personal identities. Our review suggests that individual workers' tactics for managing the contradictions of working as a prostitute and preserving self‐esteem are both similar and different, even within two broadly culturally commensurable contexts, and, moreover, that not all prostitutes necessarily want to maintain a strict divide between work sex and non‐work sex in every encounter. Moreover, even for those who do, the trials of maintaining the divide are considerable, as is the permeability of boundaries between work and intimate sex.  相似文献   
993.
In a series of major papers culminating in A Theory of Justice, John Rawls constructs an alternative to utilitarianism by developing a social contract theory of moral and political philosophy. Unfortunately, Rawls formulates the two basic principles upon which the theory rests in such a way as to restrict (unduly) the contract theory's applicability (see Section I). In this paper we present a more general discussion of the theory of justice that avoids the problems of Rawls' formulation and yet retains the important idea of justice as fairness and the contractarian approach (Section II). Later it is argued that this more general theory constitutes a bridge between the pure utilitarian theories and the social contract doctrines (Sections V and VI). The theory's advantages are demonstrated by applying it to a problem discussed by Rawls, intergenerational equity, and comparing the two solutions (Section III). Further comparisons are made and inferences drawn in the concluding three sections.Without implicating them, we would like to thank James M. Buchanan and David Lyons for comments on an earlier draft of this paper.
  相似文献   
994.
Weak ties, particularly those to potential employers, play a more important role than strong ties in the immigration of professionals to the United States. I operationalize network strength through the class of admission variable in the Immigration and Naturalization Service's public use data files,Immigrants Admitted to the United States, 1972–1992. I also examine the differential impact of legislative measures on the availability of strong versus weak ties for four groups of professionals: physicians, nurses, engineers and scientists. Not only do weak ties figure heavily on the immigration experiences of professionals, but those impacts affect women differently than men. Professional women rely more heavily on strong ties than on weak ties when compared with males in their respective professions, with the exception of nursing. These findings suggests a need for further study into the migration experiences of professionals as well as more research into how gendered networks develop among immigrant professionals and how those networks influence (either positively or negatively) immigrant adaptation to United States' society.  相似文献   
995.
This short‐term longitudinal study investigated 918 students' school‐related affect across the transition to high school. The study focused specifically on the moderating effect of change in student ethnic congruence from middle to high school. Results indicate that students experiencing more ethnic incongruence from middle to high school, in particular African American and male students, reported declining feelings of school belonging over time. Moreover, students experiencing ethnic incongruence also had increasing worries about their academic success. These results suggest that the changing school demographics from middle school to high school may negatively impact students' school‐related affect, especially if they move to high schools which include fewer students who are ethnically similar to themselves.  相似文献   
996.
The Nature, Society and History theme is discussed in terms of the conceptual framework of 'biohistory'. Reference is made to its relevance to human health and well-being, societal metabolism and ecological sustainability. The power of human culture as an ecological force is emphasized. The Nature, Society and History paradigm is discussed in the context of the social changes that will be necessary for the achievement of ecological sustainability. It is suggested that it has an essential contribution to make not only in the academic world, but also in the general community.  相似文献   
997.
998.
Bayesian Monte Carlo (BMC) decision analysis adopts a sampling procedure to estimate likelihoods and distributions of outcomes, and then uses that information to calculate the expected performance of alternative strategies, the value of information, and the value of including uncertainty. These decision analysis outputs are therefore subject to sample error. The standard error of each estimate and its bias, if any, can be estimated by the bootstrap procedure. The bootstrap operates by resampling (with replacement) from the original BMC sample, and redoing the decision analysis. Repeating this procedure yields a distribution of decision analysis outputs. The bootstrap approach to estimating the effect of sample error upon BMC analysis is illustrated with a simple value-of-information calculation along with an analysis of a proposed control structure for Lake Erie. The examples show that the outputs of BMC decision analysis can have high levels of sample error and bias.  相似文献   
999.
We describe a quasi-experimental trial of time-limited family therapy with veterans and families of veterans who served in Europe, outside the war zone, during Operation Desert Storm (ODS). Family systems therapy was provided both to individuals and conjointly to couples or families during the acute postwar readjustment period. The intervention adapted strategies from structural, strategic, intergenerational, and behavioral family therapies in a brief-treatment protocol for systemic stressor resolution. Veterans given family system therapy were able to resume functional levels of psychosocial adjustment and reduce the risk of long-term (Chronic or delayed) psychosocial impairment. Based on these preliminary findings, controlled evaluation of family systems therapy appears warranted for indi-  相似文献   
1000.
This paper studies the implementation of the coupling from the past (CFTP) method of Propp and Wilson (1996) in the set-up of two and three component mixtures with known components and unknown weights. We show that monotonicity structures can be exhibited in both cases, but that CFTP can still be costly for three component mixtures. We conclude with a simulation experiment exhibiting an almost perfect sampling scheme where we only consider a subset of the exhaustive set of starting values.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号