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   244篇
  免费   10篇
管理学   33篇
民族学   1篇
人口学   49篇
理论方法论   30篇
综合类   2篇
社会学   126篇
统计学   13篇
  2024年   2篇
  2023年   3篇
  2022年   3篇
  2021年   1篇
  2020年   10篇
  2019年   13篇
  2018年   10篇
  2017年   13篇
  2016年   10篇
  2015年   6篇
  2014年   5篇
  2013年   38篇
  2012年   7篇
  2011年   10篇
  2010年   8篇
  2009年   2篇
  2008年   3篇
  2007年   13篇
  2006年   8篇
  2005年   6篇
  2004年   5篇
  2003年   8篇
  2002年   8篇
  2001年   2篇
  2000年   5篇
  1999年   7篇
  1998年   3篇
  1997年   9篇
  1996年   4篇
  1995年   1篇
  1994年   2篇
  1993年   1篇
  1992年   1篇
  1990年   2篇
  1989年   4篇
  1988年   4篇
  1986年   2篇
  1985年   2篇
  1984年   1篇
  1983年   2篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1975年   2篇
  1974年   1篇
  1971年   1篇
  1970年   1篇
  1968年   1篇
排序方式: 共有254条查询结果,搜索用时 593 毫秒
161.
162.
The 1962 publication of Rachel Carson's Silent Spring vaulted pesticide risks to a prominent place on the media agenda. This article reports on a study of the relative weight of attention given by the New York Times to alarming or reassuring messages about pesticides in the immediate aftermath of Silent Spring . Theoretically, it uses a combination of inductive and deductive approaches to explain the empirical findings. Three models of media coverage are examined: conflict theory, sensationalism, and problem frame. These models are employed chronologically as analysis revealed a complicated pattern of coverage which first highlighted, then downplayed, risk.  相似文献   
163.
164.
165.
The Bayesian choice of crop variety and fertilizer dose   总被引:1,自引:0,他引:1  
Recent contributions to the theory of optimizing fertilizer doses in agricultural crop production have introduced Bayesian ideas to incorporate information on crop yield from several environments and on soil nutrients from a soil test, but they have not used a fully Bayesian formulation. We present such a formulation and demonstrate how the resulting Bayes decision procedure can be evaluated in practice by using Markov chain Monte Carlo methods. The approach incorporates expert knowledge of the crop and of regional and local soil conditions and allows a choice of crop variety as well as of fertilizer level. Alternative dose–response functions are expressed in terms of a common interpretable set of parameters to facilitate model comparisons and the specification of prior distributions. The approach is illustrated with a set of yield data from spring barley nitrogen–response trials and is found to be robust to changes in the dose–response function and the prior distribution for indigenous soil nitrogen.  相似文献   
166.
This paper follows up an unexpected finding from a community survey that identified drinking and smoking as the most important tuberculosis (TB) risk factor, far ahead of ones commonly associated with TB such as poverty, overcrowded living conditions, and HIV-positive status. It reports perceptions of drinking and smoking from a three-phased study of the stigma associated with TB, consisting of a qualitative pilot study using focus-group discussions (2006), a larger-scale community survey (2007), and follow-up group discussions (2009). The community attitude survey was conducted with a sample of 1,020 adults living in a low-income township in the Eastern Cape Province, South Africa. The study found that the moral and the biomedical understanding of TB risk are intertwined. In the community survey, perceptions of drinking and smoking as TB risk were predicted by fear of contracting TB and being a self-reported born-again Christian. In the follow-up study, heavy drinking and smoking in shebeens (unlicensed township liquor outlets) was associated with a risky lifestyle that can spread both TB and HIV. The paper discusses the similarities and differences in the roles of church and shebeen in providing social support to township dwellers to cope with problems of daily life. It is tentatively concluded that the stereotypical shebeen ‘drinkers and smokers’, alternatively pitied and maligned by moral society, might serve as the scapegoat that deflects pollution from the ‘new’ TB linked to the AIDS epidemic.  相似文献   
167.
168.
The present study examined the relationship between concurrent measures of adolescent fathers' parenting stress, social support, and fathers' care‐giving involvement with the 3‐month‐old infant, controlling for fathers' prenatal involvement. The study sample consisted of 50 teenage father–mother dyads. Findings from multivariate regression revealed that fathers' parenting stress was significantly and negatively related to fathers' care giving as perceived by both fathers and mothers. The relationship between support for father involvement provided by the young man's parents and father reported care‐giving involvement approached significance. Social support from both teenagers' parents buffered the negative influence of parenting stress on fathers' involvement with the baby. Policy and intervention implications are discussed.  相似文献   
169.
This paper explores the distribution of /ai/ monophthongization in African-American and European-American speakers in Memphis, Tennessee. While often considered a feature characteristic of White Southern speech, /ai/ monophthongization has also been recorded in Black speech, both within and outside the South. However, expansion of glide-weakening to the less common pre-voiceless contexts has been considered unique to European-American dialects. Evidence of extensive glide-weakening in the African-American community in Memphis will be presented and compared to the degree and contexts of glide-weakening in the European-American community. The results will show that not only is /ai/ monophthongization a feature of Memphis speech generally, regardless of ethnicity, but that African-Americans in fact lead in glide-weakening in all contexts. The role of Southern identity in the expansion of /ai/ monophthongization is discussed as a critical component in the selection of features in both Black and White speech in the Memphis area.  相似文献   
170.
This research identified the costs and benefits of the sitter service in Scotland. A ‘sitter service’ is one that provides home‐based childcare outside the hours of 8:00 am to 6:00 pm on weekdays and at weekends to support children of shift workers, single parents/carers and for children who require additional support. Nine sitter services, organised by voluntary or not‐for‐profit organisations in Scotland, were contacted; their costs were compared and the views of sitters and users identified. For very little expenditure, they provided a service that resulted in a range of individual and community benefits. However, the research concludes that most sitter services are hat small scale and piecemeal funding endangers their long‐term viability.  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