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   9411篇
  免费   56篇
各国政治   284篇
工人农民   1139篇
世界政治   256篇
外交国际关系   348篇
法律   5236篇
中国政治   46篇
政治理论   2157篇
综合类   1篇
  2023年   13篇
  2022年   10篇
  2021年   15篇
  2020年   36篇
  2019年   42篇
  2018年   1311篇
  2017年   1238篇
  2016年   1054篇
  2015年   91篇
  2014年   54篇
  2013年   210篇
  2012年   221篇
  2011年   949篇
  2010年   1042篇
  2009年   616篇
  2008年   769篇
  2007年   730篇
  2006年   39篇
  2005年   100篇
  2004年   194篇
  2003年   168篇
  2002年   55篇
  2001年   34篇
  2000年   33篇
  1999年   26篇
  1998年   18篇
  1997年   28篇
  1996年   31篇
  1995年   48篇
  1994年   38篇
  1993年   17篇
  1992年   20篇
  1991年   21篇
  1990年   13篇
  1989年   10篇
  1988年   8篇
  1987年   10篇
  1986年   12篇
  1985年   11篇
  1984年   17篇
  1983年   19篇
  1982年   11篇
  1981年   12篇
  1979年   9篇
  1978年   16篇
  1977年   13篇
  1974年   4篇
  1972年   3篇
  1968年   3篇
  1967年   5篇
排序方式: 共有9467条查询结果,搜索用时 31 毫秒
61.
62.
63.
The United States today faces a loss of influence as a world power, a reduction in American independence as a policymaker, and a decline in the standard of living on which Americans have come to depend. History teaches that nations weaker and less productive than the United States can rise to become economic powerhouses and rapidly increase their standards of living. History also teaches that nations failing to recognize their fundamental problems will inevitably decline. American politicians must face what is abundantly clear: the United States is losing ground and must act quickly to reverse its course. This White Paper outlines what must be done. Information about the nation's current status must be analyzed and communicated. Incentives to improve the level of competence in government must be provided and maintained. The emphasis of government policy must be changed to reflect broad economic and technological interests as opposed to special interests. Savings must be encouraged and increased. Infrastructure must be improved Tax laws must be modified to help bring these changes about. Economic and technological issues must be elevated to the importance they require. American thinking must reflect the new realities: that the age of leadership through military power is over, that the requirements for success in the world of the 1990s and beyond require a sound and growing economy that is internationally competitive. The US can accomplish these goals only through foundation-shaking, comprehensive, fundamental changealong the lines we propose herein.This paper is the executive summary (with minor editing modifications) of a white paper that is available from Cornell University's Johnson Graduate School of Management.  相似文献   
64.
65.
66.
This article presents a conceptual framework for analyzing the structure and dynamics of what the authors call linked systems of negotiations. Even such seemingly straightforward transactions as the purchase of a family car tend to involve linked negotiations. The framework highlights the importance of internegotiation processes in shaping Zones of Possible Agreement, and proposes a typology of linkage. By mapping out and reengineering linked systems, negotiators can enhance their ability to shape the structure within which their negotiations take place.  相似文献   
67.
68.
Deoxyribonucleic acid (DNA) was isolated from a number of spongy and compact human bone tissue specimens, and the yield was estimated on a "per milligram of starting tissue" basis. DNA was, in addition, isolated from a number of corresponding blood and bone tissue specimens. Spectrophotofluorometry and ethidium bromide visualization on minigels were used to estimate the quantity and degree of degradation of DNA. The DNA from several blood-bone pairs is shown to give concordant restriction fragment length polymorphism (RFLP) typing results by two different typing protocols with five different single-locus probes. DNA from several additional blood-bone pairs is shown to give concordant results for human leucocyte antigen (HLA)-DQ alpha phenotypes following polymerase chain reaction (PCR) amplification and hybridization to specific allele-specific oligonucleotide (ASO) probes, and for the variable numbers of tandem repeats (VNTR) length polymorphisms 3' to the human apolipoprotein B (APOB) gene following PCR amplification with specific primers and analysis of the products by electrophoresis and ethidium bromide visualization.  相似文献   
69.
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