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   504篇
  免费   15篇
各国政治   29篇
工人农民   77篇
世界政治   28篇
外交国际关系   21篇
法律   234篇
中国政治   8篇
政治理论   121篇
综合类   1篇
  2023年   2篇
  2021年   8篇
  2020年   7篇
  2019年   14篇
  2018年   15篇
  2017年   23篇
  2016年   26篇
  2015年   17篇
  2014年   17篇
  2013年   65篇
  2012年   20篇
  2011年   16篇
  2010年   10篇
  2009年   11篇
  2008年   18篇
  2007年   16篇
  2006年   17篇
  2005年   20篇
  2004年   22篇
  2003年   21篇
  2002年   16篇
  2001年   11篇
  2000年   12篇
  1999年   4篇
  1998年   9篇
  1997年   10篇
  1996年   3篇
  1995年   6篇
  1994年   7篇
  1993年   4篇
  1992年   9篇
  1991年   6篇
  1990年   5篇
  1989年   4篇
  1988年   3篇
  1987年   4篇
  1986年   6篇
  1985年   5篇
  1984年   5篇
  1983年   1篇
  1982年   3篇
  1981年   5篇
  1979年   2篇
  1978年   3篇
  1977年   2篇
  1976年   3篇
  1973年   1篇
  1971年   2篇
  1968年   1篇
  1966年   1篇
排序方式: 共有519条查询结果,搜索用时 15 毫秒
481.
Throughout the post–civil rights era, colleges and universities across the United States have periodically experienced explicitly racist incidents on their campuses. From the hurling of racial slurs at students of color, to the hanging of nooses on campus, to students donning Ku Klux Klan outfits or throwing “ghetto” parties that caricaturize communities of color, these incidents challenge the notion that modern racism has changed to a more subtle form, referred to as color‐blind racism. We place these incidents within a broader context of race and institutions, suggesting a connection between overt racist expressions and the more covert elements of neoliberal color‐blind racism. Through a critical discourse analysis of news stories about these incidents, the website of the Foundation for Individual Rights in Education, and the controlling legal cases involving racist expression on campuses, we suggest that explicitly racist incidents operate in tandem with neoliberal educational policies and color‐blind racism to mark and reinscribe colleges and universities as white institutional spaces.  相似文献   
482.
We assessed perceptions of vulnerability and the desire for personal safety/self-defense (PS/SD) training among 67 female veterans receiving outpatient mental health treatment, primarily for post-traumatic stress disorder (PTSD) from sexual and/or physical trauma. Consistent with the literature on the impact of such training on nonclinical populations and on individuals with visual impairments, the results of this study indicate that traumatized female veterans believe that PS/SD training would be an effective and powerful addition to more traditional treatments for PTSD. Study participants indicated they believe such training would positively affect their sense of personal safety; promote increased competence in thwarting future assaults; improve their self-esteem, confidence, and assertiveness; and reduce avoidant and agoraphobic behaviors. These pilot results support the development of an adjunct intervention to augment current PTSD treatments for women veterans with histories of sexual and physical trauma.  相似文献   
483.
484.
The impending transformation of public choice scholarship   总被引:2,自引:0,他引:2  
I am grateful to Charles K. Rowley and Karen I. Vaughn for valuable advice on many of the issues I address here, and to the Lynde and Harry Bradley Foundation for its continuing support of my scholarly efforts.  相似文献   
485.
486.
The role of the media in the construction of social problems is well documented in the social science literature. In some cases, the process of constructing social problems creates a moral panic. In this paper, we contend that a moral panic occurred in the late 1990s regarding hate crimes because of the disproportionate amount of media attention given to the issue. From this panic grew a movement to enact the Hate Crimes Prevention Act of 1999. We quantify Goode and Ben-Yehuda’s (1999) indicators of a moral panic by triangulating sample data, official statistics, and editorials/opinion polls. Results suggest that a moral panic over hate crimes occurred in America during 1998 and 1999.  相似文献   
487.
The combination of photographs taken at wavelengths at and bracketing the peak of a narrow absorbance band can lead to enhanced visualization of the substance causing the narrow absorbance band. This concept can be used to detect putative bloodstains by division of a linear photographic image taken at or near 415 nm with an image obtained by averaging linear photographs taken at or near 395 and 435 nm. Nonlinear images can also be background corrected by substituting subtraction for the division. This paper details experimental applications and limitations of this technique, including wavelength selection of the illuminant and at the camera. Characterization of a digital camera to be used in such a study is also detailed. Detection limits for blood using the three wavelength correction method under optimum conditions have been determined to be as low as 1 in 900 dilution, although on strongly patterned substrates blood diluted more than twenty-fold is difficult to detect. Use of only the 435 nm photograph to estimate the background in the 415 nm image lead to a twofold improvement in detection limit on unpatterned substrates compared with the three wavelength method with the particular camera and lighting system used, but it gave poorer background correction on patterned substrates.  相似文献   
488.
489.
Collections of tumour samples can be an invaluable resource for medical research. There are, however, numerous ethical and legal challenges associated with tumour banking. While there has been extensive discussion of these issues in the legal and ethical literature, there are few available empirical data in relation to the activities of tumour banks in Australia, their practices around ethically charged issues, and their success in implementing complex regulatory guidelines. The aim of this study was to gain more information about the activities of tumour banks in New South Wales, Australia, with a particular focus on their management of, and attitudes towards, ethical and regulatory issues. A survey of 27 tumour collection and research facilities was conducted using a 55-item questionnaire. There is significant heterogeneity of research methodologies as well as of methods for gaining consent and ensuring donor privacy, and there is general concern among the research community about ethical and regulatory issues related to tumour banking. Heterogeneity of practice and uncertainty about ethical and regulatory requirements is problematic in its potential to hinder research and its potential to generate the space for unethical practice, whether intentional or unintentional. There is a pressing need to address these issues so that tumour banks can be used in the most ethical and efficient way possible.  相似文献   
490.
Alprazolam is a commonly prescribed benzodiazepine. The abuse of benzodiazepines is most frequently seen in conjunction with the abuse of other drugs. Only rare fatalities have been attributed to alprazolam alone. We undertook a retrospective review of cases investigated by the Palm Beach County Medical Examiner's Office in which postmortem toxicologic studies indicated the presence of alprazolam, to further study the pattern of alprazolam abuse. Our review consisted of 178 cases, including 87 in which death was attributed to combined drug toxicity, 2 to alprazolam toxicity alone, 44 to trauma, 12 to natural causes, and 33 to another drug or drugs. Cocaine and methadone were the most common cointoxicants in the cases of combined drug toxicity, while heroin was less frequently detected. There was considerable overlap in the postmortem blood alprazolam concentrations among the groups. The overlapping ranges of concentrations of alprazolam detected indicate that it may be difficult to define a lethal alprazolam range, and that it may not be possible to determine the actual role of alprazolam as a causal factor in cases of combined drug toxicity. This study confirms that alprazolam alone is rarely a cause of death, and that alprazolam abuse usually occurs within a polydrug use pattern. The high incidence of cocaine as a cointoxicant has not been previously reported.  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