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   682篇
  免费   30篇
各国政治   58篇
工人农民   40篇
世界政治   108篇
外交国际关系   53篇
法律   279篇
中国共产党   2篇
中国政治   14篇
政治理论   155篇
综合类   3篇
  2023年   8篇
  2022年   5篇
  2021年   8篇
  2020年   17篇
  2019年   25篇
  2018年   27篇
  2017年   32篇
  2016年   36篇
  2015年   18篇
  2014年   20篇
  2013年   138篇
  2012年   18篇
  2011年   21篇
  2010年   25篇
  2009年   20篇
  2008年   20篇
  2007年   22篇
  2006年   22篇
  2005年   28篇
  2004年   17篇
  2003年   21篇
  2002年   22篇
  2001年   12篇
  2000年   15篇
  1999年   5篇
  1998年   15篇
  1997年   6篇
  1996年   8篇
  1995年   8篇
  1994年   7篇
  1993年   4篇
  1992年   4篇
  1991年   9篇
  1990年   5篇
  1989年   8篇
  1988年   2篇
  1987年   2篇
  1985年   4篇
  1984年   4篇
  1983年   5篇
  1982年   2篇
  1981年   3篇
  1980年   2篇
  1979年   2篇
  1978年   2篇
  1976年   1篇
  1975年   3篇
  1973年   1篇
  1968年   1篇
  1964年   2篇
排序方式: 共有712条查询结果,搜索用时 0 毫秒
141.
The proposition that the urban built environment can, and indeed should, be made more visually attractive is a long‐standing feature of the governance of Australian cities. In this vein, this paper examines how ‘good design’ in terms of visual aesthetics is currently pursued including through the development assessment process and the work of government architects. The paper begins by tracing the background of contemporary regulatory practice from long‐standing ideas around beauty and its value through to the urban design movement of today. Next, it considers in more detail various rationales for aesthetic governance and what might be better forms of regulatory practice. In short, it will be argued that while there can be scope for regulation to deliver superior outcomes, this practice must be sensitive to a high degree of contingency in what the public values and that deliberate empirical inquiry into the latter is desirable.  相似文献   
142.
The survival of the tiger (Panthera tigris) is seriously threatened by poaching to provide raw materials for Traditional Chinese Medicines (TCMs). Most highly prized are the tiger's bones, which are used in combination with other animal and plant derivatives in pills and plasters for the treatment of rheumatism and other ailments. Hundreds of patent remedies have been produced which claim to contain tiger bone, but proof of its presence is needed, if legislation prohibiting the trade in endangered species is to be enforced. A highly sensitive tiger-specific real-time PCR assay has been developed to address this problem. Using primers specific to the tiger mitochondrial cytochrome b gene, successful amplification has been reliably achieved from blood, hair and bone as well as from a range of TCMs spiked with 0.5% tiger bone. Although capable of detecting fewer than 10 substrate molecules, the seven varieties of TCM pills and plasters tested showed no detectable trace of tiger DNA before spiking. Furthermore, sequencing several "tiger bone" fragments seized from TCM shops has shown that they actually originated from cattle and pigs. The potential effects of traditional bone preparation methods, evidence that much lower concentrations are used than alleged on TCM packaging, and substitution of bones from other species all suggest a low likelihood of detecting tiger DNA in patent medicines. Despite this, the basic methods have been thoroughly proven and can be readily applied to derivatives from other CITES protected species providing a rapid and highly sensitive forensic test for species of origin. Potential applications to the monitoring of wild populations are demonstrated by the successful identification of shed hairs and faecal samples.  相似文献   
143.
Legal context: There exists, in some countries, a patent attorney privilege.This privilege allows an actual or potential holder of patentrights to withhold from a court communications that it has hadwith its patent attorney. The privilege is not recognized inall jurisdictions and there is variation in the extent of theprivilege in those countries where it does exist. Key points: This article explores the rationale for the privilege in orderto see if there is a sound basis upon which to found it. Througha consideration of the justifications for other legal privileges,the article finds that patent attorney privilege is a justifiableprotection for communications between clients and their patentattorneys. If there was a possibility that the communicationswould have to be revealed in court, this may impact the fulland frank nature of the communications. Such communicationsassist patent attorneys, as professionals with expertise ina specialized field, to provide clients with appropriate andeffective advice. That advice goes directly to the maintenanceand benefit of the patent system and the overall economy. Practical significance: As a result of the variation in the extent of the privilegearound the world, there are moves afoot to reform its operation.This article reveals strong public policy reasons for the recognitionof a patent attorney privilege. These grounds also reinforcethe need to ensure that privilege is not unduly limited in itsoperation in any jurisdiction.  相似文献   
144.
145.
This article provides an overview of the measures and actions taken by the Member States of the European Union in their fight against organised crime and transborder crime. The Action Plan to Combat Organized Crime adopted by the Ministers for Justice and Home Affairs during the Dutch EU Presidency, submitted some 30 recommendations with respect to greater harmonisation regarding the fight against organised crime in the EU Member States. The author gives a concise summary of the most relevant changes and the structural characteristics per Member State, paying attention to developments in the specific countries and the organisations involved. One of the conclusions reached is that few or no reforms within national investigative and prosecution authorities may be directly traced back to the regulatory impulses of the EU. Although the EU Action Plan has not yet realised a convergence of the systems, the European process of integration has increased the mutual transparency and knowledge of one another's systems.  相似文献   
146.
147.
148.
149.
This note shows how Kornai's concept of the soft budget constraint can be decomposed into separate elements of technical inefficiency and relative price distortion. The distinction between r-budget softness and m-budget softness introduced by Gomulka is shown to correspond to the equivalent and compensating variation measures of efficiency loss. It is also argued that budget softness should be viewed as the outcome of a rent-seeking process in which a firm's action in the control sphere incurs an opportunity cost in the real sphere. Adopting such a perspective leads to a re-definition of the resource loss associated with budget softness and results in much higher estimates of the social costs of soft budgets than those proposed in the existing literature.  相似文献   
150.
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