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   20365篇
  免费   600篇
  国内免费   2篇
各国政治   785篇
工人农民   727篇
世界政治   1470篇
外交国际关系   870篇
法律   11210篇
中国共产党   244篇
中国政治   642篇
政治理论   3818篇
综合类   1201篇
  2023年   187篇
  2021年   172篇
  2020年   290篇
  2019年   270篇
  2018年   339篇
  2017年   413篇
  2016年   438篇
  2015年   368篇
  2014年   419篇
  2013年   1800篇
  2012年   572篇
  2011年   661篇
  2010年   631篇
  2009年   651篇
  2008年   692篇
  2007年   750篇
  2006年   744篇
  2005年   625篇
  2004年   555篇
  2003年   559篇
  2002年   518篇
  2001年   794篇
  2000年   660篇
  1999年   521篇
  1998年   287篇
  1997年   248篇
  1996年   203篇
  1995年   210篇
  1994年   248篇
  1993年   220篇
  1992年   338篇
  1991年   374篇
  1990年   329篇
  1989年   347篇
  1988年   316篇
  1987年   334篇
  1986年   336篇
  1985年   333篇
  1984年   285篇
  1983年   318篇
  1982年   254篇
  1981年   238篇
  1980年   178篇
  1979年   246篇
  1978年   166篇
  1977年   144篇
  1976年   130篇
  1975年   120篇
  1974年   135篇
  1973年   117篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
121.
The impact of research information depends on its ability to change beliefs or policy assumptions within the relevant audiences. As a hybrid of American and British systems, Canada's chosen decision-making structure for policy-making and its legislative framework for health insurance make these audiences unclear and not readily accessible. This factor and historical characteristics of the research community which made them only partially responsive to the values of decisionmakers provide an explanation for the limited past use of research information in Canadian health policy. More recently, improved responsiveness by researchers and an emerging definition of the audiences by legislative policymakers are bringing about a gradual increase in the potential impact of research at the levels of administrative and clinical policy. Because of continuing decision-making constraints on legislative policy, however, impact at this level is predicted to remain diffuse, with only cautious acceptance of the changes in beliefs implied by research.  相似文献   
122.
123.
124.
China's experiments with democracy in this century were few in number, short in duration, and limited in their democratic characteristics. Democratic institutions malfunctioned in numerous ways. Nine sets of causes for the failure of Chinese democracy can be suggested: ideology, internal and external war, military intervention, Chinese political culture, underdevelopment, a peasant mass, flaws in the design of Chinese constitutions, moral failures by democratic politicians, or the lack of transactional benefits for military‐based elites in the process of democratic transition. Each of these factors is reviewed critically with an eye to its possible lessons.  相似文献   
125.
A 22-year-old Korean soldier, who had received blows to the neck and epigastrium from an officer 10 h earlier, suddenly died after massive hematemesis. He had been in relatively good health except for episodes of blood-tinged vomiting approximately 5 and 7 months prior to this event. Postmortem examination revealed angiodysplasia involving the gastroesophageal junction, and the stomach was distended with blood. No abnormal findings were present around the whole viscera, and the duodenum was free of blood. The pathologic significance of upper gastrointestinal angiodysplasia as a potential source of bleeding and a chronologic correlation between the trauma and bleeding are discussed.  相似文献   
126.
European Journal of Law and Economics - In this article I try to find answers for three questions: Which functions are exercised by the Court of Audit in the Netherlands, and what kinds of...  相似文献   
127.
The primary aim of this paper is to review the literature on preadolescent friendships in order to examine the relationship between preadolescent friendships and social support in adulthood. Social supports are important to health, both directly and as a stress buffer. Few studies, however, have specifically examined adult social supports from the perspective of their developmental precursors and critical developmental periods. Some data indicate that the preadolescent period may be of particular importance to the development of adult social skills and ties. Observational and empirical studies of preadolescent peer relationships, and in particular best friendships, suggest unique and critical contributions to adult social relatedness. Present research is suggestive but is insufficient to validate preadolescence as a critical period in adult social relatedness. Our review has implications for better understanding the mechanisms by which preadolescent friendships effect adult social support—an important mediator of the effects of stress on health. Further longitudinal study is needed.Received Ph.D. from University of Maryland. Research interests are social supports and psychological responses to trauma and disaster.Received M.D. from Yale University. Research interests are social supports and traumatic stress.  相似文献   
128.
129.
130.
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