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   448篇
  免费   11篇
各国政治   23篇
工人农民   8篇
世界政治   50篇
外交国际关系   33篇
法律   180篇
中国政治   4篇
政治理论   153篇
综合类   8篇
  2023年   3篇
  2022年   4篇
  2021年   2篇
  2020年   7篇
  2019年   6篇
  2018年   6篇
  2017年   16篇
  2016年   3篇
  2015年   8篇
  2014年   5篇
  2013年   94篇
  2012年   11篇
  2011年   15篇
  2010年   7篇
  2009年   13篇
  2008年   20篇
  2007年   17篇
  2006年   11篇
  2005年   16篇
  2004年   21篇
  2003年   16篇
  2002年   8篇
  2001年   9篇
  2000年   11篇
  1999年   8篇
  1998年   12篇
  1997年   7篇
  1996年   7篇
  1995年   9篇
  1994年   11篇
  1993年   6篇
  1992年   6篇
  1991年   4篇
  1990年   6篇
  1989年   3篇
  1988年   5篇
  1987年   3篇
  1986年   3篇
  1985年   8篇
  1984年   5篇
  1983年   7篇
  1982年   3篇
  1981年   8篇
  1978年   3篇
  1976年   1篇
  1973年   1篇
  1972年   3篇
  1971年   1篇
排序方式: 共有459条查询结果,搜索用时 0 毫秒
451.
452.
The policy and practice of public administration are caught between two seemingly incommensurate goals. Public servants are expected to be responsible to the oversight and control of democratically elected governments, yet, as the policy space becomes more complex, are forced to exercise more judgment and discretion in their responsibilities. Individual, collective, and professional conscience is motivated across this spectrum of challenges. This article explores the concepts of discretion and conscience in theory and practice in the Canadian context. It offers insights into how conscience can, and perhaps must, be both accommodated and supported more appropriately in the practice of 21st‐century public administration and service. At root, we argue that an array of strategies and approaches may help to build relational reciprocity to a broader set of norms that are necessary for efficient and effective governance.  相似文献   
453.
The decline in the share of agriculture and increase in secondary production's share have generally been found to accompany changes in per capita income. Cross‐section data have long exhibited such a ‘pattern of development’. Recent panel information combining cross‐section and time‐series data seemed to extend the behaviour to time series. Using analysis of co‐variance tests for such patterns over time, the paper rejects the assumption of homogeneous patterns over time. In addition 45 per cent of the individual countries deviate from the expected time series pattern. Thus such patterns certainly do appear in cross‐sections, but their existence across countries over time is not confirmed.  相似文献   
454.
The attitudes toward the police (ATP) of a group of young inner city adolescents were investigated within the context of a program designed to teach dispute resolution skills and promote a dialogue with local police. ATP were measured using a 23 item questionnaire. The results indicated that while ATP were generally positive, girls held more positive ATP than boys and adolescents who reported negative experiences with the police had less favorable ATP. A confirmatory factor analysis of the questionnaire yielded three factors; attitudes toward police behavior, attitudes toward interaction with the police, and attitudes toward interaction with other adults. The results are in general agreement with earlier studies with other populations and have implications for programs designed to improve adolescent relationships with the police. Authors' Note: David E. Brandt and Keith A. Markus, Department of Psychology. We would like to thank Professor Maria Volpe, director of the Dispute Resolution Program at John Jay College of Criminal Justice, and Ms. Marjorie Cohen, Executive Director of the Westside Crime Prevention Program, for their invaluable assistance in the collection of the data used in this study.  相似文献   
455.
A study was undertaken using nonhuman mammal specimens to better understand environmental influences on postmortem hair root band (PMRB) formation and to see whether PMRBs would occur in nonhuman mammal hairs in a similar fashion to human hairs. Carcasses from surrounding roadways were the primary source of specimens for this study, augmented by donated deceased domestic pets. Sections of pelt from each specimen were placed in controlled environmental conditions while the remainder of the carcass was left in a secure outdoor setting. Hair samples were collected daily from outdoor and control specimens and examined for evidence of PMRBs. Several environmental factors were also recorded on a daily basis. Results demonstrate PMRBs can occur in nonhuman mammal hairs, and they have microscopic characteristics similar to human PMRBs. Factors found to correlate with PMRB formation include postmortem interval, temperature, pH, and the formation and subsequent volatilization of ammonia from the surrounding tissue.  相似文献   
456.
457.
458.
459.
Examination of fire debris can provide information about the types of materials which were present at the time of the fire to give insights for fire scene reconstruction and understanding compartment fire dynamics. This paper demonstrates the ability of Raman spectroscopy for material identification postfire in complex situations, such as the production of fused masses during fire dropdown. A validated Raman spectral library is combined with Raman mapping in three fire case studies, to determine the individual materials in the fused masses formed. The case studies accessed material combinations of several common polymers. Raman mapping was carried out on a 10 μm × 10 μm square of the masses. Material identification using this technique ranged from a high of 85% match to a low of 40% match. This work demonstrated that complex masses found in the fire debris can be resolved into the individual material components for identification and spatial distribution.  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