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   9470篇
  免费   291篇
各国政治   644篇
工人农民   442篇
世界政治   721篇
外交国际关系   394篇
法律   5418篇
中国共产党   2篇
中国政治   142篇
政治理论   1910篇
综合类   88篇
  2020年   132篇
  2019年   155篇
  2018年   215篇
  2017年   237篇
  2016年   237篇
  2015年   204篇
  2014年   218篇
  2013年   1152篇
  2012年   251篇
  2011年   334篇
  2010年   235篇
  2009年   264篇
  2008年   267篇
  2007年   236篇
  2006年   235篇
  2005年   206篇
  2004年   235篇
  2003年   249篇
  2002年   179篇
  2001年   357篇
  2000年   331篇
  1999年   300篇
  1998年   149篇
  1997年   105篇
  1996年   118篇
  1995年   104篇
  1994年   111篇
  1993年   111篇
  1992年   163篇
  1991年   159篇
  1990年   147篇
  1989年   141篇
  1988年   163篇
  1987年   160篇
  1986年   164篇
  1985年   151篇
  1984年   149篇
  1983年   159篇
  1982年   95篇
  1981年   70篇
  1980年   80篇
  1979年   98篇
  1978年   78篇
  1977年   66篇
  1976年   70篇
  1975年   62篇
  1974年   49篇
  1972年   55篇
  1971年   54篇
  1969年   55篇
排序方式: 共有9761条查询结果,搜索用时 15 毫秒
821.
822.
Common knowledge suggests that elections are won or lost based on demographics, finances, and other structural elements. Whether candidates win or lose, however, is a matter of action. Symbolic identification, metaphor, and an unfolding narrative—and how they are managed and interpreted in the flow of events—determine who will emerge victorious from the democratic struggle for power. The McCain campaign’s effort to cast Obama as a celebrity, with the hollow trivialities and self-aggrandizement of Paris Hilton and Britney Spears, proves to be one of the most dangerous episodes for the Obama campaign. In response, the Democrats must adjust the staging of Obama’s Thursday night acceptance speech in Denver as a performance of purpose and gravitas, rather than glitz and adoration.  相似文献   
823.
824.
Despite the burdens that students and institutions assume when underwriting educational careers, very little is known about completion rates, risk factors, and successful strategies of criminology/criminal justice (CCJ) graduate programs. Consequently, the present study tracks 287 master’s and 70 doctoral students who entered the Florida State University CCJ program during the 1991–2000 academic years. Almost two-thirds of this cohort earned an advanced degree. Younger students with higher GRE scores were more likely to complete the master’s program. Successful doctoral degree recipients tended to have lower GRE scores, be non-White, and earn their master’s degrees in-house. In terms of time-to-degree, it took over two years to earn an M.A. and slightly more than six years to negotiate the Ph.D. Implications are explored for the program, the university, and the discipline.  相似文献   
825.
826.
When Hurricane Katrina made landfall on the Mississippi Gulf Coast in August 2005, it immediately overwhelmed the abilities of local and state emergency management officials to respond to the ensuing disaster. Although the U.S. Coast Guard and some military units were on scene shortly after the passage of the storm, there seemed to be interminable delays before the military forces began to arrive in numbers to both provide humanitarian relief and secure the affected areas. This article analyzes the response of the National Guard, active-duty military, and Coast Guard forces through the lens of coordination. We find evidence of the successful use of both traditional hierarchical and network-based coordination; we also find support for Donald Kettl's idea of "contingent coordination."  相似文献   
827.
There is mounting evidence that HIV infection among adolescents is increasing, particularly among minorities and inner-city youths involved in certain high-risk activities, such as multiple sex partners and intravenous drug use. Interviews conducted “on the street” with 611 seriously delinquent male and female adolescents (ages 12–17) included questions about their involvement in prostitution, intravenous drug use, and sex-for-crack exchanges. Findings included high percentages of youths engaged in these HIV-risk activities and a consistent association between all of them and greater illicit drug use. This would suggest that these risk behaviors may be surprisingly prevalent among some inner-city adolescent groups. Special AIDS prevention/intervention targeting these groups is warranted and urgently needed. Drug treatment should be a central focus of such programs.  相似文献   
828.
Interpretation of unusual wounds caused by firearms.   总被引:1,自引:0,他引:1  
The interpretation of the range of fire of gunshot wounds requires coordination of information and observations from the autopsy surgeon, scene investigator, and laboratory analyst. Opinions based on incomplete information often lead to misinterpretation of the wound. The effects of interposed targets such as clothing, windows, and body parts are discussed. Case examples are given for interposed targets that cause confusing patterns and even lead to misidentification of the points of entrance and exit of the projectile in the body. The splitting of tissue in areas of bony prominence can be mistaken for evidence of discharge of a firearm at close range.  相似文献   
829.
The simultaneous occurrence of cerebral hemorrhage and hemopericardium due to the rupture of a dissecting aneurysm has not been previously reported. We describe an autopsy case of a 45-year-old man with hypertension who died suddenly following both of these conditions. He had been treated for hypertension; the finding of arteriolar nephrosclerosis supported the existence of the disease. Because rupture of the aorta invariably causes a marked fall in blood pressure, the occurrence of cerebral hemorrhage following hemopericardium is highly unlikely. Thus, we presume that rupture of the aorta occurred after the cerebral hemorrhage.  相似文献   
830.
The alleles present at the HLA DQ alpha locus may be typed by either allele specific oligonucleotide (ASO) probing or by restriction mapping, referred to here as amplification restriction fragment polymorphism (ARFP) analysis. ASO typing relies upon hybridization principles, whereas ARFP typing relies upon restriction site analysis. Dot-blot ASO typings which are of doubtful interpretation may be directly checked by ARFP analysis. Aliquots of the PCR products amplified using the commercial Amplitype HLA DQ alpha system are digested with suitable restriction endonucleases. Electrophoresis, blotting and detection of biotin-labelled restriction fragments provides a sensitive and robust typing method suited to forensic analysis.  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