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   7161篇
  免费   226篇
各国政治   389篇
工人农民   251篇
世界政治   581篇
外交国际关系   253篇
法律   4167篇
中国政治   42篇
政治理论   1635篇
综合类   69篇
  2020年   81篇
  2019年   108篇
  2018年   169篇
  2017年   149篇
  2016年   157篇
  2015年   105篇
  2014年   117篇
  2013年   805篇
  2012年   151篇
  2011年   169篇
  2010年   163篇
  2009年   157篇
  2008年   165篇
  2007年   174篇
  2006年   196篇
  2005年   164篇
  2004年   156篇
  2003年   175篇
  2002年   158篇
  2001年   216篇
  2000年   189篇
  1999年   165篇
  1998年   103篇
  1997年   97篇
  1996年   71篇
  1995年   80篇
  1994年   80篇
  1993年   87篇
  1992年   125篇
  1991年   154篇
  1990年   135篇
  1989年   149篇
  1988年   130篇
  1987年   156篇
  1986年   143篇
  1985年   158篇
  1984年   138篇
  1983年   146篇
  1982年   111篇
  1981年   98篇
  1980年   91篇
  1979年   102篇
  1978年   77篇
  1977年   63篇
  1976年   67篇
  1975年   62篇
  1974年   70篇
  1973年   73篇
  1969年   57篇
  1966年   57篇
排序方式: 共有7387条查询结果,搜索用时 15 毫秒
991.
This paper compares environmental policymaking in two Brazilian cities, Rio de Janeiro and Cubatão. It examines the formation of state-society synergistic interactions in the public policymaking process and their effect on long term sustainability of social mobilization. It concludes that whereas social capital can be constructed in the context of policymaking, it is critically dependent on a concerted effort from both state and society actors to build trust in their daily interactions. The Cubatão and Carioca River cases show that state-society synergy had little effect on the ability of the policy coalitions formed for pollution clean up to sustain themselves over time. Instead, there are indications that rather than a constraint, the flexible and informal nature of such coalitions may have been a critical factor in their ability to carry out policy successfully.  相似文献   
992.
993.
994.
The specificity of antisera raised against each of the prostaglandin series 190H E1/E2 and 190H F1 alpha/F2 alpha, produced in males, was evaluated by radioimmunoassay. Further, the ability of these antisera to detect semen specific prostaglandins in mixtures of body fluids was examined. Antisera directed against the 190H E1/E2 series cross-reacted with prostaglandin E1 and marginally with E2. Antisera raised to the 190H F1 alpha/F2 alpha series were, however, highly specific to the semen specific prostaglandins 190H F1 alpha/F2 alpha and 190H E1/E2. It was possible to detect picogramme quantities of contaminating 190H F1 alpha/F2 alpha on vaginal swabs taken up to 72 h after intercourse and on vaginal swabs stored at room temperature for up to 2 years. These prostaglandins were not detected on semen free vaginal swabs, in faecal material, saliva, urine or in a sample of human milk (stain). A limited study of casework material is also described. Detection of the 190H F series, as a group, has considerable potential in the identification of human semen at picogramme levels, eliminating the need for alternative chemical tests and extensive microscopic examination.  相似文献   
995.
996.
In three cases a phenomenon is reported, seen on the skin of bodies found dead after a longer time of lying in bathtubs filled with water. The sign was parallel to the surface of the water and showed a breadth up to about 1 cm. Contrary to the surrounding skin, the mark was characterized by paleness and clearly les distinct formation of postmortem alterations as put-refaction. Searching for an explanation, temperature measurements were performed in model. The results showed the marginal paleness of the skin to be a thermal phase transition phenomenon. This mark has a forensic message too: it demonstrates a longer remaining of the corpse in the corresponding position, is a statement concerning the high of the water level, and allows a reconstruction of the original situation after manipulation, but is no sign of vital reaction.  相似文献   
997.
998.
'Area approaches' have become a new conventional wisdom for dealing with urban deprivation. Such thinking is evident in Michael Heseltine's Liverpool 'initiative'. This article contributes to an emerging critique of such approaches, by highlighting some political and organizational problems rather than stressing their incipient economic difficulties. Arguably the biggest anti-deprivation project in Western Europe, the Glasgow Eastern Area Renewal scheme (GEAR) is taken as a case study. Official claims of success are juxtaposed against an alternative perspective outlining possible weaknesses and dilemmas. Critical analysis leads to the conclusion that the GEAR constellation of organizations may be best regarded as a mutually non-effective organizational set. The persistence of such an institution, while serving short-term political and administrative needs, may unwittingly produce longer-term negative political and social consequences. The authors argue that if such problems are to be avoided in the future, the political and organizational drawbacks of this type of initiative must be appreciated.  相似文献   
999.
Persons afflicted with acquired immune deficiency syndrome (AIDS) or its preceding medical conditions face a potential problem with assured access to basic threshold medical care. Subject to certain limitations, there is no guarantee that a physician will fulfill the health care needs of any population of patients. Individuals with AIDS, thus, have a considerable interest in the development of a duty on behalf of physicians to provide treatment. This Note first highlights the limits of the legal duty to treat. It then examines the theoretical impetus propelling an ethical duty to treat. The Note concludes that the grounds for imposing an ethical duty on physicians are too weak to support that result, but the creation of an AIDS-specific legal duty is a viable alternative.  相似文献   
1000.
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