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   889篇
  免费   57篇
各国政治   75篇
工人农民   89篇
世界政治   82篇
外交国际关系   50篇
法律   465篇
中国共产党   1篇
中国政治   6篇
政治理论   176篇
综合类   2篇
  2024年   1篇
  2023年   9篇
  2022年   5篇
  2021年   9篇
  2020年   31篇
  2019年   39篇
  2018年   55篇
  2017年   60篇
  2016年   57篇
  2015年   32篇
  2014年   51篇
  2013年   150篇
  2012年   33篇
  2011年   40篇
  2010年   35篇
  2009年   32篇
  2008年   24篇
  2007年   30篇
  2006年   24篇
  2005年   36篇
  2004年   25篇
  2003年   35篇
  2002年   27篇
  2001年   10篇
  2000年   9篇
  1999年   4篇
  1998年   7篇
  1997年   7篇
  1996年   9篇
  1995年   9篇
  1994年   3篇
  1993年   5篇
  1992年   3篇
  1991年   5篇
  1990年   3篇
  1989年   2篇
  1988年   5篇
  1987年   9篇
  1986年   1篇
  1985年   2篇
  1984年   4篇
  1983年   3篇
  1980年   2篇
  1979年   2篇
  1978年   1篇
  1976年   1篇
排序方式: 共有946条查询结果,搜索用时 15 毫秒
941.
942.
The international harmonization of technology‐related regulations seeks certain norms across diverse contexts. Harmonization efforts are based primarily on the promulgation of state‐centered command and control forms of regulation, though they may also be accompanied by the diffusion of more plural approaches that are decentered from the state. We contrast the ways in which the “proper” use of transgenic cotton seed technologies is understood in harmonizing regulations with the way this technology is used in practice in regions of Argentina and China. We find divergence that poses challenges for both state‐centered and decentered approaches to harmonization. While state‐centered approaches are blind to some critical processes on the ground, decentered strategies are found wanting in situations where norms remain deeply contested amongst actors situated in very uneven power relations. In both cases, we find that establishing and securing norms that are socially just and environmentally sustainable means attending much more explicitly to the political economies in which technological practices actually take root.  相似文献   
943.
Grounded theory guided the analysis of 30 in-depth interviews with raped women and community members who had supported raped women in their contact with the police and health care services in Tanzania. The aim of this study was to understand and conceptualize the experiences of the informants by creating a theoretical model focusing on barriers, strategies, and responses during the help seeking process. The results illustrate a process of managing in the contemporary world characterized as walking a path of anger and humiliation. The barriers are illustrated by painful experiences of realizing it's all about money, meeting unprofessionalism and irresponsibility, subjected to unreliable services, and by being caught in a messed-up system. Negotiating truths and knowing what to do capture the informants' coping strategies. The study indicates an urgent need for improvement in the formal procedures of handling rape cases, improved collaboration between the police and the health care system, as well as specific training for professionals to improve their communication and caring skills.  相似文献   
944.
An effective way to reveal the history of drug abuse is to determine the parental drug and its metabolites in hair. Here, a quantitative HPLC-Chip-MS/MS method was developed for simultaneous measurement of ketamine and its metabolite norketamine in human hair. Ketamine and norketamine were extracted from hair by acid hydrolysis, and then enriched by organic solvent extraction. The chromatographic separation was achieved in 15 min, with the drug identification and quantification by a tandem mass spectrometer. The linear regression analysis was calibrated by deuterated internal standards with a R(2) of over 0.996. The limit of detection (LOD) and the limit of quantification (LOQ) for ketamine and norketamine were 0.5 and 1 pg/mg of hair, respectively. The standard curves were linear from the value of LOQ up to 100 pg/mg of hair. The validation parameters including selectivity, accuracy, precision, stability and matrix effect were also determined. In conclusion, this method was able to reveal the present of ketamine and norketamine with less hair from the drug abusers, and which had the sensitivity of ~1000-fold higher than the conventional method. In addition, the amount of ketamine and norketamine being detected in different hair segments would be useful in revealing the historical record of ketamine uptake in the drug abusers.  相似文献   
945.
Coordination across healthcare system levels is a global imperative to ensure efficient resource utilization and provide high-quality care. The substantial body of research on coordination in healthcare mainly concerns coordination across professional and organizational domains. Consequently, there is a dearth of empirical research aimed at delineating the determinants of coordination across healthcare system levels. This paper describes and analyses the barriers and enablers of healthcare coordination across national, regional, and local system levels in a populous Swedish region. Individual interviews and focus group discussions, encompassing a total of 63 individuals, were conducted with managers, administrators, and politicians. The findings of the paper underscore that the barriers identified were most often of a structural or institutional character, whereas the enablers of the studied cross-level coordination were mostly relational. Therefore, we propose that future research should aim to further delineate the prerequisites for personal relationships to emerge, as well as how they may act as enablers of coordination across healthcare system levels.  相似文献   
946.
Research on the fulfilment of electoral promises has been particularly fruitful over the past decades. Most of it focused on examining pledge fulfilment at the cabinet level, and little emphasis was placed on the reasons underlying the level of compliance. As a consequence, core factors in explaining pledge fulfilment have not yet been explored. One such factor might be instability in a government's internal functioning. We argue that ministerial instability is relevant for explaining a government's broken promises, and that its importance increases at the junior minister level and among the most salient ministries. Relying on data on the fulfilment of electoral promises and ministerial instability in Portugal between 1995 and 2019, backed by interviews with former ministers and junior ministers, we provide evidence that the fulfilment of electoral promises is significantly influenced by portfolio volatility, particularly at the junior ministerial level and in the most important ministries.  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