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   1073篇
  免费   68篇
各国政治   55篇
工人农民   40篇
世界政治   107篇
外交国际关系   130篇
法律   471篇
中国政治   4篇
政治理论   325篇
综合类   9篇
  2023年   10篇
  2022年   3篇
  2021年   6篇
  2020年   28篇
  2019年   35篇
  2018年   35篇
  2017年   54篇
  2016年   62篇
  2015年   38篇
  2014年   40篇
  2013年   151篇
  2012年   35篇
  2011年   54篇
  2010年   38篇
  2009年   40篇
  2008年   38篇
  2007年   26篇
  2006年   35篇
  2005年   40篇
  2004年   42篇
  2003年   40篇
  2002年   28篇
  2001年   17篇
  2000年   26篇
  1999年   17篇
  1998年   17篇
  1997年   15篇
  1996年   11篇
  1995年   9篇
  1994年   7篇
  1993年   16篇
  1992年   8篇
  1991年   14篇
  1990年   14篇
  1989年   10篇
  1988年   6篇
  1987年   8篇
  1985年   11篇
  1984年   5篇
  1983年   7篇
  1982年   6篇
  1981年   3篇
  1980年   5篇
  1979年   3篇
  1978年   4篇
  1977年   4篇
  1975年   5篇
  1974年   4篇
  1972年   3篇
  1970年   2篇
排序方式: 共有1141条查询结果,搜索用时 15 毫秒
101.
Over the past decade, directional drilling and hydraulic fracturing enabled an unconventional oil and gas extraction (UOGE) boom in many regions of the United States, including parts of Pennsylvania. This revolution has created serious concerns about the capability of existing institutions to govern important societal outcomes associated with UOGE. We present a conceptual framework for assessing key societal outcomes influenced by UOGE governance. In applying this framework to Pennsylvania, we discern certain institutional strengths that have allowed the Commonwealth to reap appreciable short‐term economic growth from rich resource endowments. We also find, however, that several institutional weaknesses have allowed costs externalized to the environment, public health, and community integrity to offset some proportion of those economic benefits. Likewise, we find that governance of UOGE in Pennsylvania has contributed to a bifurcated sociopolitical landscape wherein adversarial coalitions dispute the legitimacy of the industry and its governance.  相似文献   
102.
103.
Trust is an important feature for all users of the Internet who rely on the safety and security of network technologies and systems for their daily lives. Trust, or the lack of it, has also been identified by the European Commission’s Digital Agenda as a major barrier to further development of the information society in Europe. One of the areas in which concerns have been raised is in relation to children’s safety online. As a result, substantial efforts have been made by policymakers and by the industry to build greater trust and confidence in online digital safety. This paper examines what trust means in the context of children’s use of the Internet. Should policy on trust enhancement, for instance, include children’s own trust in the technologies or services they use or is it sufficient to seek to reinforce parental and adult confidence that children can be adequately protected? What is required to build that trust from either perspective? Does it need, or should it include a relationship of trust between parents and children? To tease out these questions further, the paper examines current European Union policy frameworks on digital safety, particularly industry responses to the call for a more trusted Internet environment for children, and argues that technical solutions to be effective need to carefully balance a number of competing objectives and to be sufficiently grounded in evidence of parental and child experience of the Internet.  相似文献   
104.
105.
106.
107.
108.
The concept of integrated care has assumed growing importance on the policy agendas both in England and The Netherlands and elsewhere. It is characterized as health and health care-related social care needed by patients with multi-faceted needs. This article compares policy approaches to integrated care in England and The Netherlands. Differing political strategies and conditions for integrated care correspond to the dissimilarities in the institutional structure and culture of their health care systems. Health care systems are understood as specific national and historical configurations. We review the last decade's relevant policy processes, using the concepts of hierarchy, market and network. The state health care system in England relies mainly on hierarchical steering, thus creating tight network structures for integrated care on the local level. The Netherlands, with its health care system in a public-private mix, has set incentives for voluntary, loosely coupled and partly market-driven cooperation on the local level. Implications for success or failure are mixed in both configurations. Policy recommendations have to be tailored to each systems' characteristics.  相似文献   
109.
The problem of adolescent drug use received a great deal of attention both in criminological theory and public policy. Predominant among theories was Akers' social learning theory which examined the role of learning through a process of imitation, modeling, and reinforcement. Public policy led to the development of programs such as Drug Abuse Resistance Education (DARE) that aimed to warn youths of the dangers of drug use. In line with research findings, both theory and policy gave a central role to peers in understanding adolescent drug use. Less attention was given to another important finding in the literature, that those who used drugs often perceived the drugs as solutions to problems. Using social learning theory, the role of perceptions of drug use as an effective problem solver was examined. Results indicated that a more explicit recognition of the use of drugs to deal with problems might inform both theory and policy.  相似文献   
110.
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