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   813篇
  免费   14篇
管理学   140篇
民族学   3篇
人口学   93篇
丛书文集   7篇
理论方法论   61篇
综合类   2篇
社会学   427篇
统计学   94篇
  2022年   4篇
  2020年   7篇
  2019年   15篇
  2018年   15篇
  2017年   29篇
  2016年   17篇
  2015年   14篇
  2014年   18篇
  2013年   128篇
  2012年   22篇
  2011年   19篇
  2010年   18篇
  2009年   21篇
  2008年   29篇
  2007年   24篇
  2006年   27篇
  2005年   25篇
  2004年   35篇
  2003年   21篇
  2002年   16篇
  2001年   24篇
  2000年   16篇
  1999年   25篇
  1998年   16篇
  1997年   12篇
  1996年   15篇
  1995年   23篇
  1994年   20篇
  1993年   11篇
  1992年   12篇
  1991年   9篇
  1990年   7篇
  1989年   6篇
  1988年   7篇
  1987年   11篇
  1986年   6篇
  1985年   14篇
  1984年   11篇
  1983年   10篇
  1982年   6篇
  1981年   6篇
  1980年   4篇
  1978年   3篇
  1977年   5篇
  1976年   7篇
  1975年   9篇
  1974年   5篇
  1970年   4篇
  1967年   3篇
  1964年   2篇
排序方式: 共有827条查询结果,搜索用时 0 毫秒
61.
This article examines the relationship between donations to the American Red Cross and the profits, sales, costs, and prices of health and safety classes offered by local chapters. Two important questions are examined: Do profits from sales of services “crowd out” donations to local chapters of the American Red Cross? Do managers respond to changes in donations by changing prices, output, or costs of saleable services? The results suggest that nonprofit managers should pay close attention to the potential impact on donations of any change in the prices charged for saleable goods and services, and that profits, costs, and prices of services are influenced by donations.  相似文献   
62.
This article interweaves the ideas of sustainable development, sustainable societies, and the power of advanced information technologies toward developing recommendations for social science research on information technology in society. Worldwide concern has arisen over the potentially catastrophic consequences of global climate and environmental change. As a result, sustainable development (i.e., the simultaneous protection of both the global environment and the global economy) is receiving considerable attention. Necessary for achieving sustainable development are sustainable societies, which are capable of designing, implementing, managing and evaluating long-term environmental programs. This article presents ten characteristics that describe sustainable societies and discusses how information technologies, from wireless personal digital assistants to intelligent agents to multi-media database systems, could support the evolution of sustainable societies. Topics for social science research related to designing and ameliorating the negative consequences of eight hypothetical computer-based systems are presented. Bruce E. Tonn is leader of the policy systems analysis group at Oak Ridge National Laboratory and co-principal investigator of the National Center for Environmental Decision-making Research. His research interests include environmental and energy policy, computers in society, decision making, and futures studies. He is past president of the Social Science Computing Association. His research focuses on planning, assessment and evaluation, energy use and conservation, and education.  相似文献   
63.
64.
Risk Assessment for Invasive Species   总被引:10,自引:0,他引:10  
Although estimates vary, there is a broad agreement that invasive species impose major costs on the U.S. economy, as well as posing risks to nonmarket environmental goods and services and to public health. The domestic effort to manage risks associated with invasive species is coordinated by the National Invasive Species Council (NISC), which is charged with developing a science-based process to evaluate risks associated with the introduction and spread of invasive species. Various international agreements have also elevated invasive species issues onto the international policy agenda. The World Trade Organization (WTO) Sanitary and Phytosanitary (SPS) Agreement establishes rights and obligations to adhere to the discipline of scientific risk assessment to ensure that SPS measures are applied only to the extent required to protect human, animal, and plant health, and do not constitute arbitrary or unjustifiable technical barriers to trade. Currently, however, the field of risk assessment for invasive species is in its infancy. Therefore, there is a pressing need to formulate scientifically sound methods and approaches in this emerging field, while acknowledging that the demand for situation-specific empirical evidence is likely to persistently outstrip supply. To begin addressing this need, the Society for Risk Analysis Ecological Risk Assessment Specialty Group and the Ecological Society of America Theoretical Ecology Section convened a joint workshop to provide independent scientific input into the formulation of methods and processes for risk assessment of invasive species to ensure that the analytic processes used domestically and internationally will be firmly rooted in sound scientific principles.  相似文献   
65.
66.
67.
68.
Conclusion I have attempted to distill a quite sizable body of literature written by modern economists on the theory of labor unions, with particular emphasis given to the “two faces” view of unions developed by Freeman and Medolf in What Do Unions Do? Many important ideas and contributions have necessarily been omitted, but hopefully the main contours and implications are captured.  相似文献   
69.
Rising imprisonment rates and declining marriage rates among low‐education African Americans motivate an analysis of the effects of incarceration on marriage. An event history analysis of 2,041 unmarried men from the National Longitudinal Survey of Youth suggests that men are unlikely to marry in the years they serve in prison. A separate analysis of 2,762 married men shows that incarceration during marriage significantly increases the risk of divorce or separation. We simulate aggregate marriage rates using estimates from the National Longitudinal Survey of Youth and find that the prevalence of marriage would change little if incarceration rates were reduced.  相似文献   
70.
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