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   937篇
  免费   46篇
各国政治   85篇
工人农民   58篇
世界政治   169篇
外交国际关系   80篇
法律   379篇
中国共产党   2篇
中国政治   7篇
政治理论   200篇
综合类   3篇
  2023年   11篇
  2021年   17篇
  2020年   34篇
  2019年   40篇
  2018年   57篇
  2017年   61篇
  2016年   57篇
  2015年   30篇
  2014年   44篇
  2013年   199篇
  2012年   41篇
  2011年   40篇
  2010年   25篇
  2009年   26篇
  2008年   22篇
  2007年   24篇
  2006年   15篇
  2005年   22篇
  2004年   17篇
  2003年   18篇
  2002年   19篇
  2001年   14篇
  2000年   6篇
  1999年   8篇
  1998年   13篇
  1997年   10篇
  1996年   10篇
  1995年   6篇
  1994年   13篇
  1993年   5篇
  1992年   5篇
  1990年   5篇
  1989年   7篇
  1987年   7篇
  1985年   4篇
  1984年   3篇
  1982年   5篇
  1981年   2篇
  1980年   4篇
  1979年   6篇
  1978年   2篇
  1977年   3篇
  1976年   3篇
  1975年   2篇
  1973年   2篇
  1968年   2篇
  1967年   4篇
  1963年   1篇
  1962年   2篇
  1943年   1篇
排序方式: 共有983条查询结果,搜索用时 15 毫秒
241.
This is the edited text of the lecture which he delivered to the Society on 7 March 2007.  相似文献   
242.
基层警察执法活动面临的现实困境包括警力不足和配置失当的困境;执法程序弱化、手段简单、裁定随意和越权普遍的执法行为困境;福利不足和装备落后的物质保障困境;以及警察权益缺失的困境。产生困境的原因包括执法环境上的社会转型期特点、执法规范上的不足和执法主体上的随意性原因。基层警察执法活动的理性出路在于完善执法保障和健全执法监督。执法保障包括:完善法律法规,加强执法的法律保障;加大财政投入,加强执法的物质保障;提高人员素质,强化执法的人力资源保障。健全执法监督包括:加强公安机关内部执法监督;完善监督机关的执法监督;强化权力机关的监督职能;实行警务公开;建立健全问责制等。  相似文献   
243.
Prior to the 2008 financial crisis, politicians famously told the public and themselves that ‘there is no alternative’ to a neoliberal economic paradigm. Fast‐forward to 2019 and there is, instead, the sense that ‘maybe there are alternatives’. However, when many observers and commentators look back to the 2008 crisis, they see a general continuity with what went before. In order to gain a better understanding of this ‘interregnum’, we map five sets of ideas and practices that challenge the policies, ideas, and conventions of pre‐crash orthodoxy. In doing so, we argue that there has been a fundamental transformation in legitimate public discourse about the economy since 2008: ideas and practices that were previously unimaginable or illegitimate in mainstream economic debate are now commonplace. Although this does not represent a ‘paradigm shift’, it represents significant political change that is important to understand and interrogate on its own terms.  相似文献   
244.
Abstract

This contribution focuses on a policy paradox, a failed attempt to introduce a Solar Water Heater bylaw in a South African city in spite of much initial support, both politically and professionally. The paper combines a policy design and a nodal governance perspective to explain why the law failed to materialise. It uses categories developed by the nodal governance approach to characterise the mentalities and technologies of the public agencies involved in the policy process, and explore how distinct policy cultures are nurtured by the networked relations and concomitant learning contexts of these agencies. The analysis shows how the agencies differ sharply on philosophical and practical grounds as to how they typically think about policy values and interventions. This tends to make the collaboration between them difficult as each of them experiences the other as seeking to frustrate rather to assist the policy process. The paper documents how “superstitious learning” became a predominant trait of the bylaw process, as each of the agencies tended to look for evidence in the actions of officials in the other department that confirmed their stereotypical view of them, and reinforced it during the process of interaction. Insufficient attention was given, early on in the bylaw process, to the fact that these departments would have to cooperate closely and that “buy-in” from both was a critical condition for success. Due to this, unfortunate policy design choices fed forward through the implementation process and disabled opportunities for co-learning and collective problem-solving.  相似文献   
245.
Stability of raw TATP (3,3,6,6,9,9-hexamethyl-1,2,4,5,7,8-hexoxonane) samples in solutions of common solvents was studied to highlight problems faced by forensic labs in identification and analysis of organic peroxide samples. The TATP samples were prepared by reaction of acetone and hydrogen peroxide (30%) with the aid of following catalysts: hydrochloric, sulfuric, nitric, perchloric and methanesulfonic acid. Acetone, acetonitrile, methanol and acetonitrile/water solutions of TATP samples were prepared and stored at 50°C. Various degrees of stability were observed for particular combination of catalyst and solvent ranging from totally unstable (catalyst-H(2)SO(4)/any solvent) to very stable (catalyst-HCl/solvent acetonitrile). Purification of crude TATP by re-crystallization results in product stable in all investigated solvents. Stability of solution prepared from re-crystallized DADP (3,3,6,6-tetramethyl-1,2,4,5-tetroxane) was found to be on the same level as the stability of solution of re-crystallized TATP.  相似文献   
246.
A decaying cadaver emits volatile organic compounds that are used by necrophilous and necrophagous insects in order to find their brood substrate. Although volatile organic compounds (VOCs) that are released by carcasses have been identified, little is known about the specific compounds that are used by these insects while searching for a brood substrate. Therefore, we have investigated the chemical ecology involved in the attraction of the necrophagous hide beetle Dermestes maculatus, which feeds as an adult and larva upon decomposing carcasses. Our aims have been to identify the responsible compounds in the odours of the carcass that are important for the attraction of the beetles. Furthermore, we have studied sex- and age-related differences in beetle attraction and tested whether the hide beetle can distinguish between various stages of decomposition by means of the emitted odours. Headspace collection of volatiles released from piglet carcasses (bloated stage, post-bloating stage, advanced decay and dry remains), coupled gas chromatography-mass spectrometry (GC-MS), gas chromatography with electroantennographic detection (GC-EAD) and bioassays were conducted to identify the volatiles responsible for the attraction of the beetles. Freshly emerged male beetles were attracted by the odour of piglets in the post-bloating stage (9 days after death; T(mean) = 27 °C) and the EAD-active compound benzyl butyrate. Statistical analysis revealed a higher relative proportion of benzyl butyrate in the odour bouquet of the post-bloating stage in comparison with the other stages. We therefore conclude that this compound plays an important role in the attraction of hide beetles to carcass odour. This underlines the potential use of D. maculatus for the estimation of the post mortem interval. The decomposition stage at which the female beetles are attracted to the odour of a cadaver remains unknown, as does the nature of this attraction. Pheromones (sexual or aggregation pheromones) might play an essential role correlated with their attraction to carrion and consequently with their attraction to the substrate for mating and ovipositioning.  相似文献   
247.
A 79-year-old woman suffered from acute posttraumatic stress disorder (PTSD) and a loco typico, non-displaced fracture of her right distal radius due to an incident involving the assault of two unleashed owned dogs, which suddenly ran into her and aggressively jumped on her chest and knocked her down to the ground. Recovery for her damage claim concerning pain and disability due to her right forearm fracture caused by the incident, was not the issue in the litigation concerned. However, the issue of delayed impact of her previous Holocaust experience placed a significant challenge on M.N., as a plaintiff, in establishing a causal link between the posttraumatic stress disorder concerned and the alleged harmful action of the defendants, the owners of the two dogs. The case reported here proved interesting and instructive not only in the sense of addressing main issues relevant to litigation for psychological damage related to reactivated PTSD and delayed PTSD, but also in the sense of pointing at the clinical relevance of dog assaults on humans which, even without dog bite injuries, may result in a severe traumatization and eventual civil lawsuit.  相似文献   
248.
249.
250.
This research aims to determine variables that affect the aggregate value of incoming cross-border M&As in European transitional countries. Dynamic panel models have been estimated using Arellano and Bond GMM estimator for period between year 1994 and 2008. The ratio of the total value of cross-border M&A to GDP of the country is the dependent variable. Independent variables include following indicators: lagged value of cross-border M&A to GDP, lagged GDP per capita, lagged GDP growth, inflation, interest rate spread, lagged private credit to GDP ratio, market capitalization to GDP ratio, lagged rule of law and lagged control of corruption.  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