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   506篇
  免费   12篇
各国政治   57篇
工人农民   5篇
世界政治   31篇
外交国际关系   25篇
法律   268篇
中国政治   2篇
政治理论   130篇
  2023年   4篇
  2022年   6篇
  2021年   4篇
  2020年   9篇
  2019年   13篇
  2018年   15篇
  2017年   22篇
  2016年   22篇
  2015年   17篇
  2014年   16篇
  2013年   54篇
  2012年   23篇
  2011年   32篇
  2010年   35篇
  2009年   41篇
  2008年   34篇
  2007年   40篇
  2006年   20篇
  2005年   21篇
  2004年   22篇
  2003年   13篇
  2002年   6篇
  2001年   14篇
  2000年   10篇
  1999年   5篇
  1998年   6篇
  1997年   4篇
  1996年   2篇
  1995年   1篇
  1994年   2篇
  1993年   2篇
  1992年   1篇
  1988年   1篇
  1981年   1篇
排序方式: 共有518条查询结果,搜索用时 15 毫秒
281.
A 74-year old woman in postoperative treatment after a colonic surgery died immediately after perfusion of about 1.5 mL of a white emulsion which was believed to contain 1% propofol via cardiac catheter into the right atrium. It was strongly suspected that a syringe with a zinc oxide shake lotion (consisting of 20% ZnO, 20% talc, 25% glycerol and 35% water) which was intended for external treatment had been mistaken for the propofol syringe. During autopsy, an anatomic cause of death could not be found. In order to exclude an intoxication and to determine the significance of the perfusion fluid in this context, toxicological and histological investigations were performed. Propofol and other drugs applied to the patient were found in therapeutic or sub-therapeutic range. However, in comparison to a control case, the zinc concentrations determined by AAS were about 200 times higher in lung tissue, 10 times higher in heart blood and 3–4 times higher in kidney and liver tissue. No increase was seen in venous blood. Histology showed a strong embolism of the lung tissue with birefingent sharp-edged crystals, which were identified as the talcum, and an amorphous component (ZnO). The same embolism was seen to a medium extent also in the brain sections and to a low extent in heart, liver, pancreas and kidney. Pulmonary embolism by talcum and zinc oxide was established as the cause of death which occurred by syringe swap due to insufficient security precautions in the drug administration. The results are discussed in context of pulmonary microembolism cases frequently described for drug addicts after injection of crashed talcum containing tablets.  相似文献   
282.
Der nachfolgende Beitrag stellt die Diskussion um eine Novellierung des Jagdrechts, die schon seit einiger Zeit unter inhaltlichen Gesichtspunkten kontrovers geführt wird, in den Zusammenhang mit der kürzlich in Kraft getretenen F?deralismusreform. Die Bundesl?nder besitzen im Bereich des Jagdwesens mit Ausnahme des Rechts der Jagdscheine nunmehr die Kompetenz, nach eigenem politischem Dafürhalten vom Bundesrecht abzuweichen. Der Verfasser stellt zun?chst die Verfassungsrechtslage und deren Auswirkungen auf das einfache Recht dar. Anschlie?end zeigt er die mit dem Abweichungsrecht der L?nder auf dem Gebiet des Jagdwesens verbundenen Chancen einer Re-F?deralisierung insbesondere infolge des zwischen den L?ndern entstehenden Wettbewerbs auf, um schlie?lich einen Ausblick auf die weitere Entwicklung des Jagdrechts in Deutschland zu wagen.  相似文献   
283.
284.
285.
286.
287.
288.
Many studies report the “wonders of aggregation” and that groups (often) yield better decisions than individuals. Can this “wisdom of crowds”-effect be used to forecast elections? Forecasting models in first-past-the-post systems need to translate vote shares into seat shares by some formula; however, the seat–vote ratio alters from election to election. To circumvent this problem, this paper proposes citizen forecasting, which aggregates citizens’ local expectations to directly forecast constituencies. Using data from the 2010 British Election Study, this paper finds (1) that groups are better forecasters than individuals, (2) that citizen forecasting correctly predicts a hung parliament, and (3) that marginality and group size are important predictors for “getting it right”.  相似文献   
289.
In this article we analyse the news coverage of the 2009 EP elections in all 27 EU member states (N = 52,009). We propose that the extent to which these second-order elections are salient to the media depends on political parties contesting the elections. Consistent with expectations, the findings suggest that the saliency of EP elections is increasing and that the degree of political contestation over Europe contributes to this development in a non-linear fashion so that only when contestation develops beyond a certain point, does media coverage increase.  相似文献   
290.
Purpose. The Not‐Real‐People picture set serves as stimulus material for assessing paedophilic sexual interest. The pictures were generated according to five stages of sexual maturation from infancy to adulthood. While experts seem to be able to discern between the pictures based on maturity levels for a nude variant of the stimuli, it remained unclear whether lay persons would be able to reliably distinguish between picture of clothed individuals from various maturity levels. Methods. Heterosexual university students (52 females, 50 males) participated in a paired comparison task, deciding which of the persons shown on two pictures was younger and which one was more attractive. Additionally, reaction times were recorded. Results. Both male and female judges were able to differentiate between stimuli from the opposite sex with regard to age: the perception of the stages of pubertal development conformed to a measurement on a ratio scale. Similarly, the decisions on attractiveness of the categories were in accordance with a ratio scale. Male participants favoured adolescent and adult female stimuli. Contrary to expectation, female participants did not show a preference for any single age category. Conclusions. The stimuli appear suitable for diagnostic purposes. The participants' decisions reflect the inherent maturity levels of the persons depicted. Reaction times in the paired comparison paradigm increase with task difficulty (i.e., similitude of pictures). The implications for indirect measures of sexual interest, based on reaction times, are discussed.  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