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   3905篇
  免费   101篇
  国内免费   5篇
各国政治   110篇
工人农民   57篇
世界政治   89篇
外交国际关系   368篇
法律   1003篇
中国共产党   308篇
中国政治   696篇
政治理论   243篇
综合类   1137篇
  2024年   2篇
  2023年   2篇
  2022年   35篇
  2021年   59篇
  2020年   81篇
  2019年   23篇
  2018年   26篇
  2017年   41篇
  2016年   35篇
  2015年   98篇
  2014年   125篇
  2013年   222篇
  2012年   163篇
  2011年   259篇
  2010年   318篇
  2009年   374篇
  2008年   333篇
  2007年   394篇
  2006年   412篇
  2005年   298篇
  2004年   152篇
  2003年   138篇
  2002年   124篇
  2001年   144篇
  2000年   50篇
  1999年   23篇
  1998年   9篇
  1997年   9篇
  1996年   7篇
  1995年   6篇
  1994年   6篇
  1993年   2篇
  1992年   10篇
  1991年   4篇
  1990年   1篇
  1989年   5篇
  1988年   4篇
  1987年   4篇
  1985年   3篇
  1984年   1篇
  1983年   1篇
  1982年   2篇
  1981年   3篇
  1976年   1篇
  1974年   1篇
  1972年   1篇
排序方式: 共有4011条查询结果,搜索用时 31 毫秒
171.

Questions regarding making and implementing care preferences through advance directives have become increasingly significant as the greying population grows with rising numbers of people experiencing incapacity. Currently, there is no consensus in the format for making advance directives. Recent developments highlighted the use of recording technology as an option to counter the challenges of written forms. Services offering video and audio recording available for online and offline storage are emerging in the United States. These services presumably strengthen a person’s expression of care preferences for healthcare providers in making treatment decisions compared to written advance directives. This article examines the role video advance directives play in advance decision-making and their legal and practical implications to the existing framework. An appreciation of the legal challenges presented by this development facilitates an understanding of their use in contemporary advance directives and enables appropriate recommendations for implementing safeguards in their use.

  相似文献   
172.
当今国际格局的最显著变化,就是新兴市场国家和发展中国家的群体性崛起以及中国与世界主要国家间力量对比的变化。就中美当前的实力地位和国际影响力而言,中美战略竞争中短期内还难以决定性地改变当前的国际秩序。中国即便对美国的贸易霸凌主义和在亚太地区的霸权主义军事及安全行动采取斗争的回应方式,也并不意味着两国无法合作、或中美关系已进入国际秩序变革的主导权之争。中美战略竞争的同时,经贸往来和必要的合作仍会发展。中美战略竞争会影响权力、观念和行为方式的调整变化,其走势将在相当程度上影响国际秩序的稳定和变革。但未来国际秩序的变革并非只取决于中美,世界主要国家间的互动关系和战略选择,将决定性地影响中美战略竞争的走势和未来国际秩序的演变进程。  相似文献   
173.
The horizontal displacement of the human body resulting from fatal fall from a height is an important variable commonly used to inversely determine the cause or identify other forensic aspects of the fall. When examining the horizontal displacement, the wind effect is generally ignored. This technical note reports analytical modeling of the falling process, utilizing previous measurements of wind force acting on the human body, for determining the functional relationship between the wind speed and the horizontal displacement in the falling process. The result reveals that it does not take extremely rare wind conditions to cause a considerable shift of the human body, highlighting the importance to consider wind as a factor in investigations of fatal falls.  相似文献   
174.
Species identification of necrophagous insects found on a dead body is an essential key in applying medicolegal entomology to the estimation of postmortem interval (PMI). Due to limited morphological identification of insect evidence, several studies have identified species using molecular information such as DNA markers. While considerable cytochrome c oxidase subunit I (COI) gene sequence data of necrophagous fly species have been collected and annotated, those of necrophagous beetle species have not. Since necrophagous beetles such as Dermestes species have a larval period longer than that of flies, beetles are useful in even the late decomposition phase in estimating minimum PMI. To obtain the full-length COI gene sequences of six Dermestes species collected from South Korea, we designed primers for polymerase chain reaction amplification and sequencing. The obtained full COI nucleotide sequences were used for performing phylogenic analysis and comparison with previously reported sequences. The results demonstrated that the COI gene sequences could be used to identify forensically important Dermestes species in South Korea.  相似文献   
175.
Journal of Youth and Adolescence - In the original publication, the legends for Figs 4 and 5 were incorrect, such that each regression line was mislabeled with the incorrect country. Below are the...  相似文献   
176.
This study proposed and confirmed three ways in which college students can perceive shared agency and two ways in which they can perceive non-shared agency with parents when pursuing educational goals in college. Differences and similarities were examined among participants from four ethnic backgrounds (N = 515; 67% female): East Asian American, Southeast Asian American, Filipino/Pacific Islander American, and European American. Results indicated that Asian American youth reported higher levels of non-shared agency with parents (i.e., parental directing and noninvolvement), lower levels of shared agency (i.e., parental accommodation, support, or collaboration), and poorer college adjustment compared to European Americans. However, ethnic similarities were found whereby perceived shared agency in education with parents was associated with college adjustment. Multiple mediation analyses also indicated that our model of shared and non-shared agency with parents explained differences in college adjustment between Asian and European Americans, though more strongly for comparisons between European and East Asian Americans. Our results suggest that parents continue to be important in the education of older youth but that continued directing of youth’s education in college can be maladaptive.  相似文献   
177.
178.
In this article we examine the dual-track pricing system in China's stock market since its inauguration, a legacy of its economic transition and a major source of institutional predation in the market. We then examine the share structure reform initiated in 2005 that sought to eliminate the distortion this predation had elicited. We interpret the reform push as a process of institutional change and focus on the drivers and theoretical explanations of such changes in China's stock market. We thus advance a model for understanding institutional change, Chinese style. We argue that, initially, the institutional arrangement was constructed by the dynamics of transition – the juxtaposition of the Leninist state and the emerging stock market. This provided huge incentives for state corruption in the emerging market. As the market transition proceeded, the societal and political costs of corruption and market distortion also grew, which produced a crisis that eventually attracted the attention of powerful leaders of the party state. We argue from this case that the broader political context in which specific examples of institutional change occur needs to be examined. Specifically, we argue that powerful agents who are external to given institutional environments can play an important role in institutional change, thus highlighting the political dynamics of an authoritarian state amid systemic transition and global integration.  相似文献   
179.
刘长 《学理论》2009,(26):62-63
和谐社会理论具有丰富的内涵和重要的实践价值,是我国社会发展的方向和目标。非监禁刑体现了刑罚轻缓化、刑罚人道主义和回归社会的理念。作为现代刑罚的发展趋势,非监禁刑在我国将会不断发展和完善,并对建设社会主义和谐社会起到重要的促进和保障作用。  相似文献   
180.
随着第一代独生子女进入婚育年龄,产生大量的双独家庭、单独家庭,不同家庭类型的变化将引起政策生育率自然回升,如果考虑到有部分家庭放弃生育二孩,则意愿生育率会低于政策生育率。本文从独生子女婚育选择的角度出发,使用相关调查数据分析,发现由双独家庭所产生"4-2-1"家庭的数目受政策微调生育的影响较小,政策微调可以大幅度降低一孩家庭的比例,二孩家庭比例的增加无疑会降低家庭风险,且不会大规模地增加出生人口数量,因此,中国应当对生育政策进行微调,增强人口结构的合理性。  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