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   471篇
  免费   33篇
各国政治   20篇
工人农民   31篇
世界政治   35篇
外交国际关系   36篇
法律   225篇
中国共产党   1篇
中国政治   5篇
政治理论   142篇
综合类   9篇
  2022年   2篇
  2021年   2篇
  2020年   10篇
  2019年   10篇
  2018年   16篇
  2017年   20篇
  2016年   21篇
  2015年   11篇
  2014年   12篇
  2013年   101篇
  2012年   11篇
  2011年   11篇
  2010年   8篇
  2009年   15篇
  2008年   15篇
  2007年   16篇
  2006年   13篇
  2005年   19篇
  2004年   18篇
  2003年   14篇
  2002年   21篇
  2001年   10篇
  2000年   4篇
  1999年   8篇
  1998年   5篇
  1997年   4篇
  1996年   5篇
  1995年   5篇
  1994年   8篇
  1993年   4篇
  1992年   4篇
  1991年   4篇
  1990年   4篇
  1989年   4篇
  1988年   8篇
  1986年   4篇
  1985年   3篇
  1984年   8篇
  1983年   6篇
  1982年   3篇
  1981年   5篇
  1980年   5篇
  1979年   2篇
  1978年   2篇
  1977年   4篇
  1976年   2篇
  1974年   2篇
  1971年   3篇
  1970年   2篇
  1969年   2篇
排序方式: 共有504条查询结果,搜索用时 15 毫秒
451.
Al Qaeda has crafted a successful media strategy that is adeptly suited for the war of ideas against the United States. Osama bin Laden and Ayman al-Zawahiri have demonstrated a great ability to lead plural groups and exploit innovation with the use of technology. This article explores how they have connected with diverse audiences around the world with a constant message. The repetition of their platform themes and use of “message projection opportunities” demonstrate a great understanding of human nature, marketing strategy, global media, and world politics. In line with Prospect Theory, bin Laden and Zawahiri's messaging strategy emphasizes stemming losses over solidifying gains. Only through a better understanding of Al Qaeda's media strategy and all of its strengths, weaknesses, and idiosyncrasies can the United States truly recognize what it is up against and begin to construct an effective and comprehensive counter strategy.  相似文献   
452.
453.
Most methodological work on project appraisal in developing countries have so far been primarily concerned with industrial projects and distortions in the foreign trade sector.1 In this paper interest is focused on projects in the rural sector and in particular on a neglected aspect of labour cost valuation, viz. valuation of individuals’ work effort expended.  相似文献   
454.
Although foreign fighting is hardly new, scholarly research on the phenomenon is only a decade old. Since 2005, there has also been a dramatic rise in the number of transnational insurgents fighting in the Middle East, and they appear to have become the face of the jihad movement. However, of the dozens of foreign fighter contingents around the world in recent decades, only about half have been Islamists. In this article, I contend that the difference between the other contemporary and historical foreign fighter groups and the jihadis is not one of mobilization or effectiveness, but of persistence. Most other foreign fighters demobilized at the end of their conflicts and reintegrated. I argue that the primary factor that accounts for the persistence of the jihadis was the policies of their home and host states that prevented reintegration and created cohorts of stateless, and now professionalized, actors who perpetuate in weakly-governed conflict zones. In presenting this argument, I first attempt to establish a common working definition of foreign fighter based on the first decade of discourse in this emerging field of study, and present a comparative examination of the largest recorded foreign fighter mobilizations.  相似文献   
455.
456.
Gerasimov's plastic facial reconstruction method is notoriously difficult to repeat from the published literature. Primarily, this is because of the method's underlying qualitative basis but other factors contribute including: misreports in the secondary literature of Gerasimov's method essence; a lack of published details concerning Gerasimov's modeling mastic; Gerasimov's deviation from his own published nose projection prediction guidelines; and continued refinement of the methods in the 15 years following their foremost publication. As Gerasimov cannot be consulted to resolve these issues, we provide solutions via one of his five former principal students. This includes clarification of Gerasimov's method and use of soft tissue depths; the constitution of his modeling mastic; methods used for nose projection prediction; and refinements made to his methods following their primary publication.  相似文献   
457.
Fiscal, administrative, and political tensions among the partners in the federal system have not eased, and perhaps have grown, since the demise of the U.S. Advisory Commission on Intergovernmental Relations in 1996. Yet no governmental organizational capacity exists to address big intergovernmental questions in an ongoing manner through nonpartisan or bipartisan research, data collection, deliberation, and policy formulation.  相似文献   
458.
By pooling independent study means (), the T‐Tables use the central limit theorem and law of large numbers to average out study‐specific sampling bias and instrument errors and, in turn, triangulate upon human population means (μ). Since their first publication in 2008, new data from >2660 adults have been collected (c.30% of the original sample) making a review of the T‐Table's robustness timely. Updated grand means show that the new data have negligible impact on the previously published statistics: maximum change = 1.7 mm at gonion; and ≤1 mm at 93% of all landmarks measured. This confirms the utility of the 2008 T‐Table as a proxy to soft tissue depth population means and, together with updated sample sizes (8851 individuals at pogonion), earmarks the 2013 T‐Table as the premier mean facial soft tissue depth standard for craniofacial identification casework. The utility of the T‐Table, in comparison with shorths and 75‐shormaxes, is also discussed.  相似文献   
459.
Cold case squads have garnered much attention; however, they have yet to undergo significant empirical scrutiny. In the present study, the authors interviewed investigators and reviewed 189 solved and unsolved cold cases in Washington, D.C., to determine whether there are factors that can predict cold case solvability. In the interviews, new information from witnesses or information from new witnesses was cited as the most prevalent reason for case clearance. The case reviews determined that there were factors in each of the following domains that predicted whether cases would be solved during cold case investigations: Crime Context, Initial Investigation Results, Basis for Opening Cold Case, and Cold Case Investigator Actions. The results suggest that it is possible to prioritize cold case work based on the likelihood of investigations leading to clearances.  相似文献   
460.
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