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   394篇
  免费   24篇
各国政治   27篇
工人农民   10篇
世界政治   19篇
外交国际关系   21篇
法律   178篇
中国政治   16篇
政治理论   145篇
综合类   2篇
  2023年   5篇
  2022年   5篇
  2021年   4篇
  2020年   13篇
  2019年   11篇
  2018年   16篇
  2017年   28篇
  2016年   17篇
  2015年   7篇
  2014年   10篇
  2013年   53篇
  2012年   8篇
  2011年   13篇
  2010年   19篇
  2009年   12篇
  2008年   11篇
  2007年   19篇
  2006年   16篇
  2005年   13篇
  2004年   13篇
  2003年   10篇
  2002年   10篇
  2001年   5篇
  2000年   7篇
  1999年   8篇
  1998年   5篇
  1997年   6篇
  1996年   3篇
  1995年   5篇
  1994年   4篇
  1993年   7篇
  1992年   8篇
  1991年   4篇
  1990年   5篇
  1989年   1篇
  1987年   4篇
  1986年   8篇
  1985年   4篇
  1984年   2篇
  1983年   4篇
  1982年   3篇
  1981年   1篇
  1980年   1篇
  1977年   1篇
  1976年   2篇
  1973年   1篇
  1972年   5篇
  1970年   1篇
排序方式: 共有418条查询结果,搜索用时 156 毫秒
21.
The suggestion that power line electromagnetic fields (EMFs) cause diseases like cancer has generated dozens of popular articles and television news segments, hundreds of scientific studies, and numerous consensus reports; it has attracted the attention of epidemiologists, biologists, physicists, policymakers and lawyers. This article will examine the evolution of this controversy through a detailed analysis of the arguments that have been used for and against the hypothesis that power line EMFs have adverse health effects. This article argues that the power line EMF issue provides a classic case study for exploring the challenges citizens, scientists, and policymakers face in sorting out a complex science‐based controversy. This story not only brings together many different perspectives and—from popular notions of cancer clusters to complex epidemiological arguments, from to state‐of‐the‐art animal studies to policy instruments such as the precautionary principle—but also reveals the manner in which a heated controversy can be effectively resolved over time.  相似文献   
22.
Playing with Fire: The Civil Liberties Implications of September 11th   总被引:1,自引:0,他引:1  
The aftermath of September 11th has seen a worrisome rise in invasive surveillance measures. Both adopted by statute and initiated by agencies, these provisions provide unprecedented powers for government agents to investigate suspects and search individuals, whether they are directly involved in terrorism or not. The prevailing wisdom has been that the American people will accept these restrictions as the natural cost of heightened security, and initial evidence suggests the public has been willing to tolerate greater limits on civil liberties. However, over time such support will erode, leaving in place permanent restrictions on civil liberties that not only will concern Americans, but also may turn them against government officials and civic participation. Thus, contrary to many interpretations of September 11th, this article argues that the policy response has only sown the seeds for greater detachment from and dissatisfaction with government as the public becomes increasingly separated from the workings and operations of public policy.  相似文献   
23.
Curbing Corruption: The Elusive Search for a Cure   总被引:1,自引:0,他引:1  
  相似文献   
24.
During recent years, more state and local governments have made provisions in their budgets for establishing and maintaining contingency reserve funds. A recent study by the National Conference of State Legislatures(NCSL) found that over half of all states now have such funds. The basic purpose of these contingency reserve funds, also referred to as "rainy day" funds, is to insulate governmental budgets from unexpected fiscal disruptions brought about by such factors as unanticipated revenue shortfalls and expenditure overruns. What have received less attention, however, are the criteria which governments need to use in deciding whether to establish such contingency reserves in the first place, and if so, how large these reserves should optimally be. This article explores these two issues, using the State of California as an illustrative case study  相似文献   
25.
26.
27.
The Xi-Obama summit provides a chance for frank discussion on how to improve bilateral ties The meeting between President Xi Jinping and President Barack Obama at Sunnylands,the former Annenberg estate in Rancho Mirage,California,on June 7-8 was unprecedented in its relatively informal  相似文献   
28.
While rural poverty is endemic in the Andean region, structural adjustment programmes have led to a dismemberment of agricultural research and extension services so that they are unable to serve the needs of smallholder farmers. The NGO Practical Action has been working in the Andes to address farmers' veterinary and agriculture needs. The work has included the training of farmer-to-farmer extension agents, known locally as Kamayoq. The Kamayoq have encouraged farmer participatory research, and local farmers pay them for their veterinary and crop advisory services in cash or in kind. The Kamayoq model is largely an unsubsidised approach to the provision of appropriate technical services and encouragement of farmer participation. The model also illustrates that, in the context of encouraging farmer participation and innovation, NGOs have advantages over research organisations because of their long-term presence, ability to establish trust with local farmers, and their emphasis on social and community processes.  相似文献   
29.
30.
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