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   2496篇
  免费   80篇
  国内免费   1篇
各国政治   226篇
工人农民   103篇
世界政治   303篇
外交国际关系   197篇
法律   1058篇
中国共产党   1篇
中国政治   28篇
政治理论   639篇
综合类   22篇
  2023年   9篇
  2022年   7篇
  2021年   10篇
  2020年   32篇
  2019年   51篇
  2018年   59篇
  2017年   70篇
  2016年   77篇
  2015年   48篇
  2014年   67篇
  2013年   501篇
  2012年   54篇
  2011年   74篇
  2010年   57篇
  2009年   81篇
  2008年   82篇
  2007年   78篇
  2006年   74篇
  2005年   55篇
  2004年   100篇
  2003年   66篇
  2002年   62篇
  2001年   44篇
  2000年   52篇
  1999年   35篇
  1998年   52篇
  1997年   51篇
  1996年   34篇
  1995年   43篇
  1994年   44篇
  1993年   53篇
  1992年   30篇
  1991年   29篇
  1990年   31篇
  1989年   29篇
  1988年   29篇
  1987年   36篇
  1986年   27篇
  1985年   33篇
  1984年   30篇
  1983年   28篇
  1982年   16篇
  1981年   23篇
  1980年   26篇
  1979年   9篇
  1978年   6篇
  1977年   19篇
  1976年   9篇
  1974年   6篇
  1973年   8篇
排序方式: 共有2577条查询结果,搜索用时 31 毫秒
141.
142.
Data from the Continuous Longitudinal Manpower Survey and the Current Population Survey were used to estimate the effects of CETA, a governmental jobs program, on the economic well-being of separated, divorced, and widowed women over age thirty. After training, CETA participants had increases in earnings and tended to have higher earnings than comparable CPS respondents. Participants in on-the-job training and public service employment had greater increases than participants in the other CETA programs. CETA enrollees with a high school degree had greater increases in earnings than those who had not completed high school, while whites had greater increases in earnings than non-whites.  相似文献   
143.
144.
145.
146.
The policy sciences have advanced in the past by introspection, and there appears to be a need for a return to such self-conscious examination of the field of inquiry. A design orientation offers a useful framework for such an examination. It requires reconsideration of some of the fundamental premises of policy inquiry. This article explores what impact design might have on the conventional process framework and then proceeds to discuss the development of a design perspective.  相似文献   
147.
Past researchers have identified a range of psychosocial predictors of problem behaviors during adolescence, but have been less active in addressing this same issue in relation to the 18–25-year age group. The current study investigated risk and reckless behaviors in emerging adults using self-report measures and a cross-sectional design. Several of the major limitations associated with past research were overcome by sampling widely, making clear conceptual distinctions, avoiding confounds between predictors and criteria, developing more direct measures of key constructs, and controlling for demographic variables and for social desirability. In this sample of 375 emerging adults, risk behaviors were found to be reliably predicted by sensation seeking, but not by antisocial peer pressure, whereas the reverse pattern of association was more true in relation to reckless behaviors. Gender differences, especially in relation to the impact of social desirability considerations, are explored.  相似文献   
148.
White  Graham 《Publius》2002,32(3):89-114
Treaty federalism in North America encompasses not only governanceimplications of the historic treaties signed with Aboriginalpeoples, but also the modern-day treaties known as "comprehensiveland claim agreements." This article explores how treaty federalismis realized in Northern Canada through claims-mandated jointgovernment-Aboriginal boards dealing with wildlife management,land-use planning, and environmental protection. These boards,existing at the intersection of the three orders of government-national,federal/territorial, and Aboriginal—are found to be uniquegovernance institutions, with substantial independence fromgovernment. They have significantly enhanced Aboriginal peoples'influence over land, wildlife, and resource decisions, but theextent to which they bring Aboriginal culture and worldviewsto bear in decision-making remains an open question.  相似文献   
149.
150.
The level of degradation of DNA as a means for determining the time of death has been proposed as a valid adjunct to the classic thanatochronologic methods. The twofold aim of this work was to determine which organ might reveal both a correlation between the percentage of degradation of the DNA and the time lapse since death, and would be easiest to sample and yield the most reproducible results even in technically unfavorable situations such as on-the-spot investigations at the scene of death. A comparison of the spleen, blood, and liver showed that hepatic tissue best meets these specific needs because it shows a virtually linear correlation between the time elapsed since death and the level of degradation of the DNA, and it can easily be sampled at the scene of death by use of a common biopsy needle.  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