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   853篇
  免费   56篇
管理学   60篇
民族学   8篇
人口学   92篇
丛书文集   13篇
理论方法论   132篇
综合类   7篇
社会学   552篇
统计学   45篇
  2023年   16篇
  2022年   7篇
  2021年   9篇
  2020年   32篇
  2019年   30篇
  2018年   35篇
  2017年   55篇
  2016年   43篇
  2015年   33篇
  2014年   41篇
  2013年   158篇
  2012年   26篇
  2011年   39篇
  2010年   25篇
  2009年   20篇
  2008年   34篇
  2007年   27篇
  2006年   27篇
  2005年   26篇
  2004年   36篇
  2003年   10篇
  2002年   21篇
  2001年   15篇
  2000年   8篇
  1999年   9篇
  1998年   11篇
  1997年   5篇
  1996年   10篇
  1995年   10篇
  1994年   11篇
  1993年   6篇
  1992年   9篇
  1991年   10篇
  1990年   4篇
  1989年   9篇
  1988年   8篇
  1987年   10篇
  1985年   2篇
  1984年   3篇
  1983年   3篇
  1982年   2篇
  1981年   1篇
  1980年   2篇
  1979年   1篇
  1977年   1篇
  1976年   3篇
  1975年   1篇
  1974年   1篇
  1971年   1篇
  1970年   1篇
排序方式: 共有909条查询结果,搜索用时 46 毫秒
91.
This project evaluated the extent to which businesses with a primary purpose of providing opportunities for sexual encounters between men (e.g., bathhouses and sex clubs) have implemented strategies that target their customers with important HIV and STD prevention messages. Between October 1996 and February 1997, we conducted structured telephone interviews with 63 businesses throughout the United States in order to describe their facilities and their HIV education and prevention efforts. Types of facilities offered were related to what businesses called themselves and the kinds of sex space they provided. All of the businesses reported that they provided condoms and lubricant on site; 95% provided educational materials such as posters and flyers about HIV/AIDS; and 40% provided HIV testing on site, with half of these also providing some type of STD testing. Although some level of HIV prevention and educational efforts by these businesses are described, further investigation into their efficacy is required.  相似文献   
92.
The paper analyzes autobiographical acounts of the experience of chronic illness and its treatment to develop a sociological theory of the self. It is suggested that ‘self’ is not a biologistic or psycologistic thing. Rather self is autobiographical narrative – hence the narrative self. It is argued that four elements constitute such narrative selves in autobiographical discourse: evaluative relationships between events in time; cosmology; power relationships; and conceptualisation of self as object.  相似文献   
93.
The aging domestic oil production infrastructure represents a high risk to the environment because of the type of fluids being handled (oil and brine) and the potential for accidental release of these fluids into sensitive ecosystems. Currently, there is not a quantitative risk model directly applicable to onshore oil exploration and production (E&P) facilities. We report on a probabilistic reliability model created for onshore exploration and production (E&P) facilities. Reliability theory, failure modes and effects analysis (FMEA), and event trees were used to develop the model estimates of the failure probability of typical oil production equipment. Monte Carlo simulation was used to translate uncertainty in input parameter values to uncertainty in the model output. The predicted failure rates were calibrated to available failure rate information by adjusting probability density function parameters used as random variates in the Monte Carlo simulations. The mean and standard deviation of normal variate distributions from which the Weibull distribution characteristic life was chosen were used as adjustable parameters in the model calibration. The model was applied to oil production leases in the Tallgrass Prairie Preserve, Oklahoma. We present the estimated failure probability due to the combination of the most significant failure modes associated with each type of equipment (pumps, tanks, and pipes). The results show that the estimated probability of failure for tanks is about the same as that for pipes, but that pumps have much lower failure probability. The model can provide necessary equipment reliability information for proactive risk management at the lease level by providing quantitative information to base allocation of maintenance resources to high-risk equipment that will minimize both lost production and ecosystem damage.  相似文献   
94.
This study examined the stability and coherence of African‐American children's social support networks. Participants included a total of 106 3‐ to 4‐year‐old children attending Head Start centers located in the southeast. Children completed a social network interview in two consecutive years at the Head Start centers. These interviews tapped multiple dimensions of the support network including social embeddedness, proportion of the network providing support, and perceived support. Analyses focused on both the rank‐order stability of children with respect to network characteristics as well as stability of network relationships (the same individuals included in the network at both time periods). Results indicated age‐related increases in network size for adult and child categories, network size across three support domains, proportion of support scores, and perceived support from adults. In addition to age‐related changes, analyses revealed considerable rank‐order stability with respect to structural network dimensions, but very little rank‐order stability in proportion of support and perceived support scores. In contrast, both structural and supportive components of the children's networks were shown to be coherent over a one‐year period when specific network member relationships were examined. Discussion highlights both continuities and discontinuities in young children's social networks, and how data obtained in this study contribute to theory building and the systematic examination of African‐American children's emerging social networks.  相似文献   
95.
Bordes and LeBreton have found a set D of weak orderings of X that includes all linear (strong) orderings of X but where there exists a social welfare function f on D N satisfying all of Arrow's (non-domain) conditions. In this paper we characterize all such D and f possibilities.  相似文献   
96.
In the span of four weeks, from late March to early April 2008, three important technical services conferences were held: the Electronic Resources & Libraries Conference, the New England Technical Services Librarians Conference, and the North Carolina Serials Conference.  相似文献   
97.
To better understand the social factors that influence the diverse pathways to family formation young adults experience today, this research investigates the association between opposite‐gender relationships during late adolescence and union formation in early adulthood. Using data from the first and third waves of the Add Health (n= 4,911), we show that, for both men and women, there is continuity between adolescent and adult relationship experiences. Those involved in adolescent romantic relationships at the end of high school are more likely to marry and to cohabit in early adulthood. Moreover, involvement in a nonromantic sexual relationship is positively associated with cohabitation, but not marriage. We conclude that the precursors to union formation patterns in adulthood are observable in adolescence.  相似文献   
98.
What is the nature and content of political correctness and multiculturalism? Are both these movements solely products of left-wing politics masquerading as an effort to create more racial, sexual, ethnic, and religious diversity throughout social institutions in the name of fairness and equity or are these movements addressing legitimate concerns about tolerance and equality? What of right-wing allegations that information used by proponents of these two movements is biased? What are the social and political implications of these movements and the relationship between economics and multiculturalism? Finally, why is there such controversy surrounding these movements, and who is in fact the opposition? These are some of the questions addressed in this essay.  相似文献   
99.
100.
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