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   12243篇
  免费   326篇
各国政治   696篇
工人农民   447篇
世界政治   843篇
外交国际关系   465篇
法律   7669篇
中国共产党   2篇
中国政治   155篇
政治理论   2169篇
综合类   123篇
  2020年   147篇
  2019年   170篇
  2018年   246篇
  2017年   256篇
  2016年   279篇
  2015年   220篇
  2014年   248篇
  2013年   1324篇
  2012年   309篇
  2011年   442篇
  2010年   294篇
  2009年   297篇
  2008年   346篇
  2007年   342篇
  2006年   322篇
  2005年   275篇
  2004年   329篇
  2003年   343篇
  2002年   270篇
  2001年   492篇
  2000年   448篇
  1999年   386篇
  1998年   164篇
  1997年   116篇
  1996年   124篇
  1995年   115篇
  1994年   122篇
  1993年   128篇
  1992年   215篇
  1991年   234篇
  1990年   229篇
  1989年   226篇
  1988年   249篇
  1987年   238篇
  1986年   231篇
  1985年   217篇
  1984年   208篇
  1983年   202篇
  1982年   114篇
  1981年   86篇
  1980年   91篇
  1979年   124篇
  1978年   108篇
  1977年   87篇
  1976年   91篇
  1975年   86篇
  1974年   86篇
  1973年   85篇
  1972年   87篇
  1971年   90篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
43.
The Department of Defense has taken steps in recent years to improve outcomes for victims of domestic violence who reside on military installations. In 2000, the Defense Task Force on Domestic Violence was established, a military‐civilian group of experts charged with improving the military's effectiveness in addressing domestic violence in the Armed Forces in a variety of areas including offender accountability, coordination between military and civilian communities, and changing the military climate around domestic violence. This article will provide an overview of the Task Force, its work during the past three years, and its recommendations.  相似文献   
44.
Recent major shifts in US military thinking, creating a new low-intensity conflict (LIC) doctrine, have resulted already in significant changes in organization, mission definition, force structure and budgetary allocation. These changes have come about because American leadership recognizes that the process of deindustrialization has produced a vulnerable, highly integrated and interdependent global economic system. This system of economic rationalization is susceptible to anti-western disruptions because of the instability produced by rapid social change, a consequence of the competition from the newly industrialized nations. LIC capability is viewed as a necessary means for dealing with disruptions.  相似文献   
45.
Although law enforcement agencies across the nation have assumed part of the responsibility in the fight against terrorism, significant confusion exists as to the role of local law enforcement. While some agencies have taken steps towards terrorism prevention, little data has been collected on which agencies have taken the greatest steps, how those agencies have changed, and how other agencies should direct their activity. This case study of law enforcement census data from a single state considered variations in terrorism preparedness and predictors of preparedness. Agency size, presence of funding, and other variables significantly predict levels of terrorism preparedness. Important policy implications such as the distribution of funding and which agencies should be working towards terrorism preparedness are discussed.  相似文献   
46.
47.
48.
On the one hand the following case demonstrates the problems of finding a dead body in the bathroom and on the other hand the importance of postmortem x-ray examinations. The corpse of an 65-year-old woman was discovered in her bath tub. At the body's feet there was a hair dryer. Investigations concerning murder were negative, circumstances appeared to be unsuspicious. That was why a postmortem examination was not performed. -4 years later murder had to be considered. After manual strangling the deceased and the hair dryer were layed into the bath tub. The corpse was exhumed and taken to a forensic autopsy. It was found that the hyoid bone and the superior horn of the thyroid cartilage were both fractured on the right. Damages caused by the preparation itself were excluded by using serial roentgenographs. These observations in combination with histological findings and the results of further investigations convincingly supported the suspicion of strangling by hand.  相似文献   
49.
A gas chromatographic (GC) fingerprint method, based on the presence or absence of six congeners, was developed for illicit cocaine samples. The fingerprint utilizes the relative abundances of these congeners towards each other, disregarding cocaine as the main constituent, and can be expressed numerically or graphically in the form of pictograms for rapid visual comparison. The method can be applied directly to a solution of the sample in chloroform, without previous workup procedures. More than 70 unrelated samples were analyzed and a great variation was observed in the parameter composition. On the other hand, a remarkable similarity could be seen between related samples. The GC fingerprint method may be considered an important contribution for sample comparison, as is exemplified by a subdivision of the analyzed samples in different categories, based on the number and types of congeners found.  相似文献   
50.
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