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   575篇
  免费   39篇
各国政治   52篇
工人农民   17篇
世界政治   60篇
外交国际关系   53篇
法律   278篇
中国政治   7篇
政治理论   140篇
综合类   7篇
  2023年   3篇
  2022年   3篇
  2020年   8篇
  2019年   10篇
  2018年   25篇
  2017年   27篇
  2016年   29篇
  2015年   34篇
  2014年   20篇
  2013年   99篇
  2012年   14篇
  2011年   21篇
  2010年   15篇
  2009年   17篇
  2008年   14篇
  2007年   22篇
  2006年   21篇
  2005年   25篇
  2004年   23篇
  2003年   21篇
  2002年   25篇
  2001年   9篇
  2000年   7篇
  1999年   10篇
  1998年   9篇
  1997年   4篇
  1996年   12篇
  1995年   6篇
  1994年   9篇
  1993年   3篇
  1992年   4篇
  1991年   5篇
  1990年   2篇
  1989年   6篇
  1988年   3篇
  1987年   4篇
  1986年   8篇
  1985年   4篇
  1984年   3篇
  1983年   3篇
  1982年   2篇
  1980年   4篇
  1979年   8篇
  1977年   2篇
  1976年   2篇
  1971年   1篇
  1970年   1篇
  1969年   1篇
  1968年   1篇
  1965年   1篇
排序方式: 共有614条查询结果,搜索用时 15 毫秒
421.
422.
423.
The applied technology transfer process is a communication process based on planning, marketing, and training. Planning is the single most important element, while pre-planning is also essential. The marketing part of applied technology transfer involves an in-depth knowledge of both consumers and products. A sound knowledge of media is also essential. The marketing step is the key delivery or transfer element. Applied technology transfer is a system that requires skills such as management and communication techniques which can be learned in traditional academic courses. However, other skills such as applied human relations are more easily learned under a supervised workshop approach. More complex technology transfer systems require additional training on a continuing education basis. The development of technology transfer learning centers can also be useful. Applied technology transfer is a research investment rather than a cost. It is the technology transfer process that insures the timely application of research effort. Research pay-off is derived from use of research products. Thus, applied technology transfer represents research delivery insurance.  相似文献   
424.
425.
426.
In a seminal article, Cox (1990) suggested that electoral systems with larger district magnitudes provide incentives for parties to advocate more extreme policy positions. In this article, we put this proposition to the test. Informed by recent advances in spatial models of party competition, we introduce a design that embeds the effect of electoral rules in the utility function of voters. We then estimate the equilibrium location of parties as the weight voters attach to the expected distribution of seats and votes changes. Our model predicts that electoral rules affect large and small parties in different ways. We find centripetal effects only for parties that are favorably biased by electoral rules. By contrast, smaller parties see their vote share decline and are pushed toward more extreme equilibrium positions. Evidence from 13 parliamentary democracies supports model predictions. Along with testing the incentives provided by electoral rules, results carry implications for the strategies of vote‐maximizing parties and for the role of small parties in multiparty competition.  相似文献   
427.
Carbon monoxide (CO) inhalation is one of the leading methods of suicide in the United States. A sharp increase in suicide by inhaling the CO produced from burning charcoal has been reported in parts of Asia; however, the incidence of this method has not been determined in a U.S. population. Thus, we determined trends of CO suicide in the ethnically diverse population of King County, Washington, U.S.A. During the period 1996-2009, we identified 158 cases of suicide by CO poisoning, with 125 because of automotive exhaust, 26 because of charcoal burning, and seven from other CO sources. While historical U.S. data indicate >99% of CO suicides in the United States occurring by automobile exhaust inhalation, in the most recent years analyzed, c. 40% of CO-related suicides in King County, Washington, were because of charcoal burning, indicating a possible shift in suicide trends that warrants further scrutiny in additional populations.  相似文献   
428.
429.
Previous research shows that sleep deprivation (SD) produces cognitive impairment similar to that caused by alcohol intoxication. Individual studies suggest that SD also causes deficits in motor skills that could be mistaken for intoxication. Consequently, SD often is used as a defense when an impaired driver is charged with driving while intoxicated. Twenty-nine adult subjects participated in two test sessions each, one after a full night's rest and the other after wakefulness of at least 24 h. Subjects consumed prescribed amounts of alcohol during each session. Law enforcement officers conducted field sobriety tests identical to those with which a driver would be assessed at roadside. Researchers also measured clinical responses of visual function and vital signs. The presence and number of validated impairment clues increase with increasing blood alcohol concentration but not with SD. Thus, SD does not affect motor skills in a manner that would lead an officer to conclude that the suspect is intoxicated, unless intoxication also is present.  相似文献   
430.
This article examines the challenges allies face in coordinating diplomatic efforts to accommodate and peel off their main enemy's potential allies. It elucidates the key dimensions, and the underlying coordination dynamics, of this problem of “concerted accommodation,” and it develops propositions about the conditions that shape the efficacy of such efforts. The argument links allies’ strength to their divergent or convergent assessments of the target state's ability to tip the war toward victory or defeat. Divergent assessments foster weak allied efforts that are likely to fail, but when allies agree that the target is a potential “war-tipper,” they will support their concerted accommodation policy with more robust cooperation that is more likely to work. The causal arguments and mechanisms are examined in a paired comparison analysis of two First World War cases: the Entente's efforts to induce (1) Ottoman neutrality and (2) Italian intervention.  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