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   267篇
  免费   19篇
管理学   24篇
民族学   3篇
人口学   10篇
理论方法论   27篇
综合类   3篇
社会学   208篇
统计学   11篇
  2020年   2篇
  2019年   7篇
  2017年   6篇
  2016年   7篇
  2015年   10篇
  2014年   5篇
  2013年   59篇
  2012年   10篇
  2011年   9篇
  2010年   6篇
  2009年   8篇
  2008年   9篇
  2007年   14篇
  2006年   8篇
  2005年   4篇
  2004年   5篇
  2003年   4篇
  2002年   3篇
  2000年   3篇
  1999年   2篇
  1997年   5篇
  1996年   5篇
  1994年   3篇
  1993年   2篇
  1992年   3篇
  1991年   7篇
  1990年   6篇
  1988年   1篇
  1987年   3篇
  1986年   2篇
  1985年   3篇
  1984年   3篇
  1983年   6篇
  1982年   3篇
  1981年   6篇
  1980年   3篇
  1979年   9篇
  1978年   1篇
  1977年   6篇
  1976年   5篇
  1975年   5篇
  1974年   2篇
  1972年   2篇
  1971年   3篇
  1970年   1篇
  1969年   1篇
  1968年   2篇
  1967年   3篇
  1966年   1篇
  1964年   1篇
排序方式: 共有286条查询结果,搜索用时 828 毫秒
121.
Current and future developments of medical techniques, especially those concerned with resuscitation and intensive care, will result in more people living much longer in the future. Their treatment and care will be very expensive, and this will require consideration of priorities. In this article some ethical attitudes are suggested, and a number of practical planning measures to anticipate some of the inevitable problems are proposed.  相似文献   
122.
A growing number of firms have responded to the ‘unpredictable future’ by developing ways to measure their proposed strategies against several plausible alternative futures. Probably the most widely used of these techniques is multiple (or alternative) scenario analysis (MSA).Survey results indicate that approximately 150 of the Fortune ‘1000’ industrials now use MSA in their formal planning processes. Most have begun using MSA within the last 3 or 4 years. Furthermore, a number of other companies are considering its use. Survey results also show that firms do not follow the relatively rigorous procedures as suggested in the literature. Also, MSA seems to be most successful when management is both knowledgable and involved with scenarios from the beginning.  相似文献   
123.
Low back pain (LPB) is a major health problem among military rotary-wing aircrews worldwide. In order to define the etiology and propose remedies to LBP in helicopter aviators a review and critique of the literature was conducted. In-flight sitting posture and vibration generated by the aircraft were identified as high risk factors for LBP. Consequently, researchers recommended ergonomic modifications to the crew stations. The efficacy of these technical interventions has not been proven. As well, these design changes are not financially practical. Following an in depth kinesiological analysis of the physical demands of this type of flying, and preliminary experimentation, an alternative aeromedical approach focusing on the aircrew rather than the craft is presented. The authors propose a set of flight-specific exercises that might effectively deal with this problem. A thorough testing of this approach is envisioned.  相似文献   
124.
Providing informal care has negative health consequences for informal caregivers. If these health consequences increase drug utilization among caregivers, estimates of health care savings from informal care—mainly realized through reductions in utilization among care recipients—should consider the increased drug costs incurred by informal caregivers. This paper evaluates whether more intensive informal caregivers have higher drug utilization than less intensive caregivers, controlling for initial health status and other factors. We find that informal care intensity is associated with higher drug consumption. An increase of 10% of total informal care per day is associated with a 0.7% increase in drugs. The small magnitudes indicate that, in this application, it is not important to consider caregiver drug utilization when quantifying the net savings to the health care system of informal care. For individual caregivers, such as those who take multiple drugs per month and/or have no drug coverage, the increase in drug utilization associated with intensive caregiving is likely to be costly.  相似文献   
125.
Most approaches to systems theory, group theory and family theory suffer from two major inadequacies. First, they are heavily oriented toward structure (e.g. structure of the system) as opposed to process. Second, because of this bias, such theories overemphasize stability at the expense of change and transformation. In contrast, Ilya Prigogine's concept of “order through fluctuation” demonstrates how systems suddenly organize themselves and, equally suddenly, make discontinuous shifts from one coherent order to another. As a paradigm, “order through fluctuation” constitutes a basic nonequilibrium ordering principle that governs the forming and unforming of systems at all levels.  相似文献   
126.
127.
128.
129.
This National Science Foundation funded qualitative study highlights unique features of adolescent technology use and its impact on the developmental maturational processes of early adolescence. One hundred twenty-eight 13- and 14-year-old students were interviewed about their information technology (IT) use. The most salient feature of the interview data is that the students perceived technology as integral to all aspects of their everyday life experience. In particular, they understood the necessity of using technology for the development of their cognitive/academic skills, and they spoke about the need to have technology skills for their future careers. They also seemed to understand how IT helped them develop psychosocially, especially in the areas of communication and relationship development. Throughout the interviews, these young adolescents expressed pleasure and pride in their self-reported high level of technoliteracy. Their voices can help expand our understanding of adolescent development in the digital age, and suggest implications for policy, practice, and research.  相似文献   
130.

Drawing upon social control theory in criminology, this paper examines the relationship between gender roles and the inhibitors of deviance. We develop and test hypotheses that “traditional” females, defined in terms of either position in the social structure or gender‐role attitudes, perceive higher levels of three types of sanctions assocíated with crime than do males; while “nontraditional” females are similar to males in their perceptions of sanctions. Results indicate that while changing gender roles and gender‐role attitudes affect perceived threats of guilt‐feelings and social stigma, they do not appear to influence women's perceptions of legal sanctions.  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