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   470篇
  免费   19篇
各国政治   43篇
工人农民   41篇
世界政治   40篇
外交国际关系   18篇
法律   208篇
中国政治   3篇
政治理论   131篇
综合类   5篇
  2023年   3篇
  2020年   2篇
  2019年   12篇
  2018年   13篇
  2017年   9篇
  2016年   13篇
  2015年   15篇
  2014年   15篇
  2013年   66篇
  2012年   14篇
  2011年   15篇
  2010年   11篇
  2009年   18篇
  2008年   18篇
  2007年   13篇
  2006年   13篇
  2005年   20篇
  2004年   20篇
  2003年   9篇
  2002年   10篇
  2001年   13篇
  2000年   11篇
  1999年   11篇
  1998年   5篇
  1997年   8篇
  1996年   11篇
  1995年   4篇
  1994年   8篇
  1993年   10篇
  1992年   6篇
  1991年   8篇
  1990年   9篇
  1989年   7篇
  1988年   10篇
  1987年   4篇
  1986年   5篇
  1985年   7篇
  1984年   6篇
  1983年   2篇
  1979年   3篇
  1978年   3篇
  1977年   4篇
  1976年   3篇
  1974年   3篇
  1973年   3篇
  1972年   2篇
  1971年   2篇
  1965年   1篇
  1964年   3篇
  1963年   1篇
排序方式: 共有489条查询结果,搜索用时 15 毫秒
131.
132.
An estimated 25% of the US population aged 18 to 50 years has a tattoo, which have been associated with markers of high-risk behaviors including alcohol and drug use, violence, carrying weapons, sexual activity, eating disorders, and suicide. This study compares tattoo prevalence and type in a homicide population to those of an age-, race-, and sex-matched control group of nonhomicide deaths. The data for this study were abstracted from autopsy records maintained by the Jefferson County Alabama Coroner/Medical Examiner's Office for the years 2007 and 2008. Odds ratios and 95% confidence intervals for the association between homicide and tattoo presence and characteristics were calculated using conditional logistic regression. There was no association between tattoo presence and death by homicide; however, among blacks, memorial tattoos were significantly more common among homicides compared with other types of deaths (odds ratio, 2.50; 95% confidence interval, 1.10-5.68). The results of the current study suggest that specific types of tattoos, but not all tattoos, may be risk factors for homicide. Other factors, such as race and lifestyle, along with tattoos may need to be considered.  相似文献   
133.
134.
The current study examined the utility of expert testimony of the battered person syndrome (BPS) in a case of duress and the extent to which defendant gender, defendant sexual orientation, and participant gender influence mock jury decisions in a case of duress. Participants (N?=?413) read a scenario based on U.S. v. Dixon (2006) and answered questions assessing verdict, guilt, sentence length, duress legal elements, and attributes typically ascribed to victims of abuse. Results showed heterosexual female defendants were assigned the lowest sentences and met more of the legal elements of duress (i.e., were coerced, more likely to be believed, and purchased a gun to prevent harm) and attributes (i.e., experienced severe abuse, learned helplessness) compared to other defendants. When mock jurors received expert testimony, they provided lower rates of guilt and sentencing for defendants. Results also showed the inclusion of BPS expert testimony increased ratings for many of the legal elements of duress and attributes typically associated with intimate partner violence. In addition, results suggested that while heterosexual female defendants are more likely to be believed in a case of duress, expert testimony of BPS is helpful to all defendants. Limitations and future directions for research and practice are discussed.  相似文献   
135.
This paper calls into question the extent to which ethical dualism, broadly conceived as raison d’ état, does justice to Machiavelli’s understanding and practice of the diplomatic arts. Arguments are advanced herein that Machiavelli did not so much abandon morality as he sought, through the examples of Rome and antiquity, to find a different remedy for the disorder and violence rampant in the Italy of his day. Machiavelli’s reports in the diplomatic service of Florence illustrate qualities and skills of the diplomat often at odds with the caricature of the immoral statesman.  相似文献   
136.
137.
Parliamentary enclosure is considered between the mid‐eighteenth and the mid‐nineteenth centuries. Three motives for enclosure are identified: to change the structure of rural society, to secure profit, and to promote social stability. Enclosure laid the basis for the final destruction of the English peasantry. Those who gained were, essentially, large landlords and large capitalist tenants. Those who lost were all other members of rural society who relied on their rights of commons: and especially independent owners of small acreages, cottagers with no holdings in the common fields and squatters on the commons. The article seeks to establish (1) the importance and value of commons and rights of common and (2) what happened at enclosure when rights of common were abolished; with evidence almost entirely from the Parts of Lindsey in North Lincolnshire. From c.1790 onwards (until well after 1870, in fact) there was a prolonged attack on all aspects of rural popular culture and parliamentary enclosure was one important element in that attack.  相似文献   
138.
A single highway connects the Caribbean province of Limón to mainstream society in the highlands of Costa Rica. This paper explores the ways in which that highway affects the status hierarchy of mainstream society in Costa Rica, and how the construction of whiteness as an unexamined racial qualifier for total social incorporation constrains the perception of blacks as social liminars and blackness as a state of communitas. The argument elaborates the work of Victor Turner on ritual liminality to suggest the structural ambiguity of Afro-Latin Americans in the context of Costa Rica.  相似文献   
139.
140.
Ethanol formation in unadulterated postmortem tissues   总被引:2,自引:0,他引:2  
During the investigation of aviation accidents, postmortem samples obtained from fatal accident victims are submitted to the FAA's Civil Aerospace Medical Institute (CAMI) for toxicological analysis. During toxicological evaluations, ethanol analysis is performed on all cases. Many species of bacteria, yeast, and fungi have the ability to produce ethanol and other volatile organic compounds in postmortem specimens. The potential for postmortem ethanol formation complicates the interpretation of ethanol-positive results from accident victims. Therefore, the prevention of ethanol formation at all steps following specimen collection is a priority. Sodium fluoride is the most commonly used preservative for postmortem specimens. Several studies have been published detailing the effectiveness of sodium fluoride for the prevention of ethanol formation in blood and urine specimens; however, our laboratory receives blood or urine in approximately 70% of cases. Thus, we frequently rely on tissue specimens for ethanol analysis. The postmortem tissue specimens received by our laboratory have generally been subjected to severe trauma and may have been exposed to numerous microbial species capable of ethanol production. With this in mind, we designed an experiment utilizing unadulterated tissue specimens obtained from aviation accident victims to determine the effectiveness of sodium fluoride at various storage temperatures for the prevention of microbial ethanol formation. We found that without preservative, specimens stored at 4 degrees C for 96 h showed an increase in ethanol concentration ranging from 22 to 75 mg/hg (average 42 +/- 15 mg/hg). At 25 degrees C, these same specimens showed an increase ranging from 19 to 84 mg/hg (average 45 +/- 22 mg/hg). With the addition of 1.00% sodium fluoride, there was no significant increase in ethanol concentration at either temperature.  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