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   68596篇
  免费   3287篇
各国政治   4473篇
工人农民   2868篇
世界政治   6136篇
外交国际关系   3811篇
法律   32313篇
中国共产党   10篇
中国政治   745篇
政治理论   20589篇
综合类   938篇
  2021年   407篇
  2020年   1156篇
  2019年   1520篇
  2018年   1650篇
  2017年   1959篇
  2016年   2166篇
  2015年   1835篇
  2014年   2105篇
  2013年   10509篇
  2012年   1604篇
  2011年   1729篇
  2010年   1820篇
  2009年   2048篇
  2008年   1747篇
  2007年   1710篇
  2006年   1878篇
  2005年   1781篇
  2004年   1670篇
  2003年   1482篇
  2002年   1534篇
  2001年   1637篇
  2000年   1425篇
  1999年   1250篇
  1998年   1125篇
  1997年   925篇
  1996年   928篇
  1995年   922篇
  1994年   948篇
  1993年   970篇
  1992年   963篇
  1991年   1015篇
  1990年   946篇
  1989年   1020篇
  1988年   1003篇
  1987年   1000篇
  1986年   1013篇
  1985年   1055篇
  1984年   930篇
  1983年   985篇
  1982年   889篇
  1981年   851篇
  1980年   666篇
  1979年   709篇
  1978年   585篇
  1977年   525篇
  1976年   485篇
  1975年   396篇
  1974年   415篇
  1973年   422篇
  1972年   371篇
排序方式: 共有10000条查询结果,搜索用时 328 毫秒
71.
Using the 2017 post-election German Longitudinal Election Study (GLES), this article examines the voters for the Alternative for Germany (AfD) in the 2017 German federal election. We show that AfD voters in 2017 were truly ‘flesh of the same flesh’ of the mainstream German political parties, with the AfD drawing its voters from across the political party spectrum as well as from previous non-voters in 2013. In contrast to previous scholarship, we find that in most respects AfD voters in 2017 did not differ demographically from voters for all other parties, be that in terms of gender, education, employment status, and union membership. Furthermore, we find that AfD voters were not driven by anxiety about their own economic situation: they are no ‘losers of globalisation.’ Instead, AfD voters in 2017 were driven solely by two factors: their attitudes towards immigrants/refugees and anti-establishment sentiment/satisfaction with democracy in Germany.  相似文献   
72.
73.
The global defense industrial sector is a remarkably accurate indicator of the distribution of power in the post-Cold War international system. However, the defense industrial sector as a policy tool has received relatively little scrutiny, even though it not only reflects the international order, but also provides the United States with the ability to influence the foreign policy behavior of other states. The defense industrial sector is a powerful, if undervalued, diplomatic tool in the United States’ political arsenal.  相似文献   
74.
This paper describes several dimensions of the cost of the U.S. response to the threat of terrorism. Following an evaluation of the nature and magnitude of the threat of terrorism against the United States, the paper describes the restrictions on our civil liberties, the fiscal and other costs of the major homeland security measures, the fiscal cost of programs that make no contribution to the defense against terrorism but are rationalized on that ground, and the effects on our language and the potential for civil discourse of an extended defense against terrorism.  相似文献   
75.
76.
What drives policymakers to put the interests of others above their own? If human nature is inherently selfish, it makes sense to institutionalize incentives that counter decision makers' temptations to use their positions to benefit themselves over others. A growing literature rooted in evolutionary theories of human behavior, however, suggests that humans, under certain circumstances, have inherent predispositions towards “representational altruism,” i.e., to make an authoritative decision to benefit another at one's own expense. Drawing on Hibbing and Alford's conception of the wary cooperator, a theoretical case is made for such behavioral expectations, which are confirmed in a series of original laboratory experiments.  相似文献   
77.
In the early 1970s, Grand Canyon National Park intended to designate its land to “Wilderness,” including the controversial Colorado River corridor. However, by the end of the 1970s the potential for Wilderness designation was off the table, and would never seriously return for genuine consideration. Using Schattschneider's model of conflict, we explain how the organization of this conflict privileges the “causal story” of Wilderness opponents, and therefore why the canyon is not designated. It is our contention that members of Congress will not stand forward to support Wilderness designations without simultaneously providing benefits for extractive land use because (1) congressional representatives are more penalized for supporting than opposing Wilderness designations, (2) Wilderness advocacy groups do not pressure congressional delegates as firmly as opposition groups, and (3) key local congressional members are not likely to see Wilderness as a salient issue worth the risk of negative exposure. If these findings hold, the implication is that we may have reached the end of significant Wilderness designations in highly visible areas, unless critical aspects in land use conflict change.  相似文献   
78.
Numerous accounts reveal that congressional leaders often secure “hip‐pocket votes” or “if you need me” pledges from rank‐and‐file legislators. These are essentially options on votes. Leaders exercise sufficient options—pay legislators to convert to favorable votes—when those options will yield victory. Otherwise, they release the options. A model shows that this optimal strategy for leaders produces many small victories, few small losses, and losses that are, on average, larger than victories. We find precisely these patterns, hence strong evidence for vote options, in Congressional Quarterly key votes from 1975 through 2001 and in non‐key votes from the 106th Congress (1999–2000).  相似文献   
79.
This concept paper presents a theory of environmental scarcity developed byHomer-Dixon. Homer-Dixon developed a model to describe the consequences of scarcity for sub-national violence in third world countries. This paper hasfour interrelated purposes. First, it presents the model of scarcity developedby Thomas Homer-Dixon in 1999. Second, it assesses the way in which the scarcity model contextualizes criminal justice and criminology research, andby extension, how research in crime and justice processes can broaden the scarcity model. Third, it applies elements of the model to the United States,a goal that represents a generalization of the model from third-world to first-world settings. Fourth, it presents a particular case, the migrationof African-Americans from the rural South to urban centers in the 1950s and1960s and consequent inner-city violence in the 1960s, that displays manyelements of the environmental scarcity model.  相似文献   
80.
In 1991 the FCC implemented a price cap plan for local exchange carriers' interstate access service designed to deal with the regulatory boundaries problem arising from the breakup of AT&T in 1984. The experience with the price cap plan demonstrates the difficulty of predicting productivity growth accurately and makes clear that regulators cannot depend upon a pure price cap plan to keep prices within a reasonable range of costs. With periodic reviews to readjust plan parameters, however, a price cap plan can maintain the rate-of-return close to the target rate-of-return without diminishing the price cap plan's incentives for efficient production. A simple method of recalculating the X-factor based on the rate-of-return over the previous three years worked well in simulations. If this procedure had been used over the price cap period 1991 to 2000, prices would have been 20 percent lower and expenditures on LECs' telecommunications service subject to a price cap would have been $3.8 billion lower.  相似文献   
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