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   6455篇
  免费   283篇
各国政治   444篇
工人农民   241篇
世界政治   656篇
外交国际关系   505篇
法律   2790篇
中国政治   60篇
政治理论   1970篇
综合类   72篇
  2023年   51篇
  2022年   24篇
  2021年   49篇
  2020年   115篇
  2019年   143篇
  2018年   231篇
  2017年   241篇
  2016年   310篇
  2015年   169篇
  2014年   199篇
  2013年   1035篇
  2012年   215篇
  2011年   215篇
  2010年   182篇
  2009年   185篇
  2008年   224篇
  2007年   266篇
  2006年   250篇
  2005年   229篇
  2004年   227篇
  2003年   201篇
  2002年   202篇
  2001年   127篇
  2000年   115篇
  1999年   121篇
  1998年   100篇
  1997年   106篇
  1996年   75篇
  1995年   72篇
  1994年   77篇
  1993年   93篇
  1992年   71篇
  1991年   70篇
  1990年   71篇
  1989年   60篇
  1988年   71篇
  1987年   46篇
  1986年   56篇
  1985年   49篇
  1984年   40篇
  1983年   36篇
  1982年   34篇
  1981年   38篇
  1980年   26篇
  1979年   25篇
  1978年   27篇
  1977年   22篇
  1976年   17篇
  1975年   18篇
  1974年   34篇
排序方式: 共有6738条查询结果,搜索用时 0 毫秒
141.
We investigate the role of Congress in the growth of federal public expenditure since 1930, building on the work of Kau and Rubin (Public Choice, 113:389–402, 2002). The model incorporates majority party strength and the extent of party control of Congress in addition to the median ideological position of elected representatives. We first provide estimates of the relative importance of the state of Congress and of trending supply and demand-side economic factors in the evolution of federal spending. The resulting models are then used to simulate the consequences of the radical and historically unprecedented shift to the right of Congress in 1994/95.  相似文献   
142.
The authors comment on an earlier aritice in Society by Eugene Goodheart and offer a novel hypothesis about the origins of religion.
Lionel Tiger (Corresponding author)Email:
  相似文献   
143.
Democratization reduces the risk of war, but uneven transitions toward democracy can increase the probability of war. Using country-level data on democratization and international war from the period 1875–1996, we develop a general additive statistical model reassessing this claim in light of temporal and spatial dependence. We also develop a new geopolitical database of contiguities and demonstrate new statistical techniques for probing the extent of spatial clustering and its impact on the relationship between democratization and war. Our findings reaffirm that democratization generally does reduce the risk of war, but that large swings back and forth between democracy and autocracy can increase war proneness. We show that the historical context of peace diminishes the risk of war, while a regional context plagued by conflict greatly magnifies it.  相似文献   
144.
Although agricultural biotechnology has been a seminal reference point in risk perception studies, public awareness of their exposure to risk deriving from this new technology has been minimal at best. However, recent events indicate there may be growing public concern as new variations of this technology appear. Understanding what drives perceptions of benefits from the third generation of the agricultural biotechnology and what determines public worries are keys for the future of this technology. To this end, this study analyzes survey data from the midsouth region of the United States to construct four separate regression models of perceived benefits from and worries over plant‐made industrial products and plant‐made pharmaceuticals. Findings suggest that while prior experience with and knowledge about agricultural biotechnology has an impact on perceptions of benefits and worries, trust in farmers plays a highly important role in determining perceptions.  相似文献   
145.
正As China’s economy shifts gear,its pace must be adjusted to match In the early years of the 2000s,a shoe factory in Wenzhou of east China’s Zhejiang Province,founded by a local entrepreneur who secured clients in the  相似文献   
146.
Economy Focused     
正Key points from the Two Sessions and what they mean for China and the world At a time when the United States seems to be retreating from the principles of free trade and globalization,Brexit inches toward reality,the rumblings of trade wars begin to rock the stability of the international order and leadership in technology is seen as a path to prosperity,China is  相似文献   
147.
The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners.  相似文献   
148.
ABSTRACT

We examined the associations between childhood sexual abuse (CSA), childhood physical abuse (CPA), sexual domain variables, antisocial tendencies, and sexually coercive behaviour in a non-forensic sample of 173 heterosexual men. CSA was associated with paraphilic interests and experiences, a more extensive sexual life history, and early antisocial tendencies. CPA was associated with paraphilic interests and experiences, more self-reported delinquency, higher sensation seeking, and early antisocial tendencies. Sexual domain variables (e.g. number of sexual partners, sexual interest in sadomasochism) mediated the link between CSA and sexually coercive behaviour, but antisocial domain variables (e.g. delinquency, sensation seeking) did not. Of the two sexual domains examined, extensive sexual life history rather than paraphilias mediated the association between CSA and sexually coercive behaviour. These results suggest CSA and CPA are associated with both sexual and antisocial outcomes, and that, for some victims of CSA, having an extensive sexual life history may account for the association between CSA and sexually coercive behaviour later in life.  相似文献   
149.
150.
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