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   1150篇
  免费   51篇
各国政治   60篇
工人农民   54篇
世界政治   110篇
外交国际关系   36篇
法律   506篇
中国政治   39篇
政治理论   386篇
综合类   10篇
  2022年   7篇
  2021年   21篇
  2020年   25篇
  2019年   19篇
  2018年   33篇
  2017年   44篇
  2016年   24篇
  2015年   26篇
  2014年   25篇
  2013年   177篇
  2012年   37篇
  2011年   25篇
  2010年   26篇
  2009年   35篇
  2008年   23篇
  2007年   42篇
  2006年   31篇
  2005年   40篇
  2004年   42篇
  2003年   26篇
  2002年   45篇
  2001年   15篇
  2000年   25篇
  1999年   20篇
  1998年   18篇
  1997年   15篇
  1996年   4篇
  1995年   21篇
  1994年   21篇
  1993年   12篇
  1992年   21篇
  1991年   18篇
  1990年   13篇
  1989年   17篇
  1988年   17篇
  1987年   22篇
  1986年   18篇
  1985年   19篇
  1984年   12篇
  1983年   15篇
  1982年   10篇
  1981年   16篇
  1980年   8篇
  1979年   7篇
  1978年   11篇
  1977年   9篇
  1976年   8篇
  1975年   7篇
  1974年   8篇
  1973年   4篇
排序方式: 共有1201条查询结果,搜索用时 15 毫秒
121.
Underinvestment in Public Good Technologies   总被引:2,自引:0,他引:2  
Although underinvestment phenomena are the rationale for government subsidization of research and development (R&D), the concept is poorly defined and its impact is seldom quantified. Conceptually, underinvestment in industrial R&D can take the form of either a wrong amount or a suboptimal composition of R&D investment. In both cases, R&D policy has not adequately modeled the relevant economic phenomena and thus is unable to characterize, explain, and measure the underinvestment. Four factors can cause systematic underinvestment in R&D-intensive industries: complexity, timing, existence of economies of scale and scope, and spillovers. The impacts of these factors vary in intensity over the typical technology life cycle, so government policy responses must be managed dynamically. In addition to understanding the causes of underinvestment in R&D, the magnitude of the deficiency relative to some “optimum” must be estimated to enable a ranking of technology areas with respect to expected net economic benefits from a government subsidy. Project selection criteria must therefore be based on quantitative and qualitative indicators that represent the nature and the magnitude of identified market failures. The major requirement for management of R&D policy therefore is a methodology that regularly assesses long-term expected benefits and risks from current and proposed R&D portfolios. To this end, a three-stage process is proposed to effectively carry out R&D policy analysis. The three stages are (1) identify and explain the causes of the underinvestment, (2) characterize and assess the investment trends and their impacts, and (3) estimate the magnitude of the underinvestment relative to a perceived optimum in terms of its cost to the economy. Only after all three stages of analysis have been completed can the underinvestment pattern be matched with the appropriate policy response.  相似文献   
122.
123.
124.
<正> 法国政府一般对外国投资是抱支持态度的。法国的政府机构——地方领土整治评议会(DATAR)积极寻找机会吸引外国投资,尤其是吸引外国投资者到法国较不发达地区去投资,并对外国投资规定了刺激和鼓励的措施。这些措施包括:支付现金、对人员培训提供津贴、特别税收减免  相似文献   
125.
This article argues that political learning with regard to civil-military relations in Chile has proved an obstacle to democratization. In the postauthoritarian period, both the armed forces and political parties have referred to history when considering civil-military reform, especially with regard to how to avoid a repeat of the conflict of the Unidad Popular period. Meanwhile, the military also utilizes the Spanish example when resisting changes it feels are inimical to its interests. The 'lessons' each takes from the past directly influence political strategies and the overall result is that while civilian rule continues, democratic civil-military relations are not necessarily advanced.  相似文献   
126.
Despite the widespread use of mediation to resolve public policy disputes, there is little written on the mediation of judicial rule disputes. A successful mediation of a dispute over proposed court rules to govern mediation of certain family law cases involving domestic violence concerns is reviewed. The authors conclude that the mediation provided (a) a confidential venue for disputing judges to respectfully disagree with one another, (b) an opportunity for collaborative problem solving, (c) an opportunity to reduce conflict among judicial colleagues. (d) a format for dialogue with other stakeholders, and (e) greater degree of influence with regard to the outcome of the dispute. Specific recommendations to encourage the effective use of judicial policy mediation are offered.  相似文献   
127.
128.
Journal of Experimental Criminology - The primary aim of this study is to provide an evaluation of St. Louis’ Acoustic Gunshot Detection System’s (AGDS) ability to reduce gun violence....  相似文献   
129.
More than 100 freedom of information (FOI) laws have been enacted worldwide, nearly half within the last 10 years. Yet these cross‐domain, lynchpin transparency measures have received little scholarly attention. This article assesses the 16 FOI measures adopted across Latin America. Is secrecy being surrendered in a region marked by legacies of opacity? Why are some laws fulfilling their de jure potential in practice while others are not? This article aims to achieve 3 general objectives. It analyzes the de jure and de facto strength of Latin American FOI regimes; it exposes critical data‐based and methodological challenges in evaluating and comparing transparency laws; and it illustrates how a causal mechanism, driven by the interactive dynamics of legislative balances of power and cabinet compositions, has had a determinate influence in shaping the strength of FOI regimes from adoption to implementation and reform.  相似文献   
130.
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