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   16274篇
  免费   219篇
各国政治   669篇
工人农民   1355篇
世界政治   912篇
外交国际关系   676篇
法律   9177篇
中国政治   120篇
政治理论   3552篇
综合类   32篇
  2021年   57篇
  2020年   112篇
  2019年   160篇
  2018年   1444篇
  2017年   1380篇
  2016年   1197篇
  2015年   179篇
  2014年   203篇
  2013年   1059篇
  2012年   380篇
  2011年   1108篇
  2010年   1161篇
  2009年   780篇
  2008年   945篇
  2007年   889篇
  2006年   214篇
  2005年   248篇
  2004年   406篇
  2003年   328篇
  2002年   190篇
  2001年   352篇
  2000年   336篇
  1999年   236篇
  1998年   141篇
  1997年   135篇
  1996年   105篇
  1995年   134篇
  1994年   117篇
  1993年   94篇
  1992年   154篇
  1991年   172篇
  1990年   172篇
  1989年   159篇
  1988年   146篇
  1987年   160篇
  1986年   131篇
  1985年   129篇
  1984年   131篇
  1983年   113篇
  1982年   86篇
  1981年   91篇
  1980年   54篇
  1979年   90篇
  1978年   55篇
  1977年   50篇
  1976年   41篇
  1975年   46篇
  1974年   55篇
  1973年   61篇
  1972年   44篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Asia Europe Journal - This article examines the role of strategic partnerships in Indian foreign policy and the nature and perceptions of India and the European Union about the strategic...  相似文献   
2.
3.
4.
5.
Several studies had concluded that the police subculture holds values and attitudes that are distinct from the rest of the population. Among these values is a focus on law and order. While researchers agree that police tend to hold different values, they disagree on the source of the attitudes. Some had argued that the attitudes reflected differences regarding who was recruited for law enforcement careers while others said that the differences reflected changes that occurred to individuals after becoming officers. This study examined whether police officers and students enrolled in criminal justice/sociology classes held similar or different attitudes towards the Miranda warnings. The findings suggested that in some ways, the two groups perceived the warnings in dramatically different ways, while in other ways their differences were simply a matter of degree. Implications are provided.  相似文献   
6.
Technology transfer has generally had little impact on the assistive technology industries serving small, highly fragmented “disability markets.” Persons with disabilities often require specialized, relatively sophisticated technology. Third-party payer reimbursement rates and the low levels of disposable income among disability populations often cap product pricing. Transferring technology to these industry segments therefore poses special challenges. In October 1998, the Rehabilitation Engineering Research Center on Technology Transfer initiated the “Demand-Pull Project on Wheeled Mobility.” Successful transfers resulting from this project demonstrate that a systematic technology transfer process can be successfully applied to industries serving specialized and underserved niche markets.  相似文献   
7.
The present study measured the existence of traumatic stress symptomatology as reported by certified law enforcement officers within the State of Delaware. A questionnaire was devised which documented age, sex, race, education, years of service, marital status, children, rank, position, and shift work. The questionnaire was divided into parts which assessed the exposure and the frequency of specific traumatic incidents experienced in the line of duty, and the frequency of experienced traumatic symptomatology criteria: re-experiencing, numbing, and arousal.  相似文献   
8.
9.
This study aimed to expand the scope of previous research by assessing the effectiveness of soot-removal techniques on glass from petrol-bomb debris using methods of 1% and 2% sodium hydroxide (NaOH) solutions, ultrasonic bath and vacuum suction. Of particular interest were the 1% and 2% NaOH solutions applied to the soot-covered surfaces. Petrol bombs containing petrol or a 50:50 mix of petrol and motor oil were exploded and the debris was collected for analysis. Favourable results were found to varying degrees using each of the soot-removal methods with the 1% and 2% NaOH wash solutions, being the most useful. The 2% NaOH solution also proved successful as a soak to loosen and remove heavy contamination of soot and accelerants without damaging the finger mark beneath. This study also found that recovery of finger marks in blood from beneath soot using the 2% NaOH solution was possible. Finger marks were also applied to glass bottles with plastic adhesive labels, and providing the fire damage is not too great marks were also retrievable. Results from this study lead to the conclusion that the NaOH wash solution is ideally suited for soot removal to reveal latent and blood-contaminated marks both within the laboratory and at crime scenes.  相似文献   
10.
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