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   2492篇
  免费   73篇
  国内免费   21篇
财政金融   247篇
工业经济   83篇
计划管理   601篇
经济学   478篇
综合类   170篇
运输经济   74篇
旅游经济   134篇
贸易经济   301篇
农业经济   249篇
经济概况   249篇
  2024年   10篇
  2023年   66篇
  2022年   35篇
  2021年   114篇
  2020年   172篇
  2019年   122篇
  2018年   105篇
  2017年   149篇
  2016年   101篇
  2015年   86篇
  2014年   116篇
  2013年   332篇
  2012年   123篇
  2011年   159篇
  2010年   102篇
  2009年   113篇
  2008年   118篇
  2007年   94篇
  2006年   83篇
  2005年   81篇
  2004年   50篇
  2003年   57篇
  2002年   29篇
  2001年   38篇
  2000年   18篇
  1999年   19篇
  1998年   11篇
  1997年   3篇
  1996年   6篇
  1995年   7篇
  1994年   9篇
  1993年   2篇
  1992年   11篇
  1991年   3篇
  1990年   2篇
  1989年   7篇
  1988年   3篇
  1987年   1篇
  1986年   3篇
  1985年   6篇
  1984年   5篇
  1983年   7篇
  1982年   6篇
  1981年   2篇
排序方式: 共有2586条查询结果,搜索用时 0 毫秒
51.
Abstract. During the last decade, many Western economies reformed their welfare systems with the aim of activating welfare recipients by increasing welfare‐to‐work programmes (WTWP) and job‐search enforcement. We evaluate the short‐term effects of three important German WTWP implemented after a major reform in January 2005 (‘Hartz IV’), namely short training, further training with a planned duration of up to three months and public workfare programmes (‘One‐Euro‐Jobs’). Our analysis is based on a combination of a large‐scale survey and administrative data that is rich with respect to individual, household, agency level and regional information. We use this richness of the data to base the econometric evaluation on a selection‐on‐observables approach. We find that short‐term training programmes, on average, increase their participants' employment perspectives. There is also considerable effect heterogeneity across different subgroups of participants that could be exploited to improve the allocation of welfare recipients to the specific programmes and thus increase overall programme effectiveness.  相似文献   
52.
全球气候变化正吸引着越来越多的国家和地区关注环境问题.从整体来看,发达国家在发展低碳经济方面启动更早,政策工具多样,值得发展中国家深入研究和借鉴.当前我国低碳经济正处于探索阶段,尚面临许多障碍与困难,为顺应国际发展潮流,实现我国经济、社会和环境的可持续发展,在借鉴发达国家低碳经济发展经验的基础上,为我国低碳经济发展提供一些政策启示是十分必要的.  相似文献   
53.
环境经济快速发展的迅猛态势所付出的代价令人担忧。如果环境经济政策是为环境问题量身定做的,那么环境恶化的不可逆转又从何而来?研究环境经济政策的针对性和科学性存在的问题,首先提出了生态经济政策源头存在的问题,接着从政策的针对性和科学性方面指出生态经济政策问题的理论缺陷,继而通过制度经济以及制度与行为经济的理论对生态经济政策进行探源研究,对现有生态经济政策探源研究进行补充,最后提出国外可借鉴条款。为生态经济政策经济化研究提供方向,提供改善政策效率的契机。  相似文献   
54.
全国主体功能区规划已获得国务院通过并开始实施。作为一项国家空间战略布局规划,主体功能区规划的实施必将作为“十二五”时期及今后一段时期内经济社会工作的重点。为推动主体功能区规划的顺利实施,各级政府需要对主体功能区规划实施的关键问题形成共识。在主体功能区规划实施中,对主体功能区的认识、主体功能区规划实施的主体、主体功能区的划分、主体功能区的协调与调整、主体功能区的监测与评价、主体功能区政策措施落实、主体功能区的考核、主体功能区实施的组织保障、主体功能区规划实施的技术支撑、主体功能区实施的挑战与机遇等是需要重点关注的问题。  相似文献   
55.
56.
57.
In this introductory paper we introduce the special issue on “Backcasting for Sustainability”. We present briefly a historical background, and position backcasting in the wider context of future studies, in which it can be related to “normative forecasting” and normative scenarios. We reflect on the diversity and variety of backcasting studies and experiments, as presented in the ten papers for this special issue. After summarizing the papers we formulate a future research agenda.  相似文献   
58.
This article focuses on the problem of assessing the environmental sustainability of energy projects. For this purpose an original model, which is based on various indicators that measure the environmental sustainability of energy projects, has been developed. This model, so called index of environmental sustainability of energy projects (IESEP), can be used in scenario comparison, while measuring the effectiveness of the proposed alternatives. Finally, an example of how to use this model is provided by analyzing alternatives to ameliorate the environmental sustainability of a hydroelectric project. In doing so, it is possible to show the usefulness of this model when used as a decision making tool for energy planners.  相似文献   
59.
This paper analyses the economic performances of the rural system and the level of land sensitivity to degradation in Italy. Three indicators (district value added, share of agriculture on total product, and a composite index of land sensitivity) were used to classify 784 Italian local districts into eight performance classes. Four classes share a combination of high environmental quality (in terms of land degradation), high (or low) economic performances, and high (or low) productivity of the primary sector. The remaining four are characterised by a combination of low (and declining) environmental quality, high (or low) economic performances, and high (or low) productivity of the primary sector. The eight classes were grouped into four ‘environmental quality’ types and four ‘target performance’ categories to discriminate among high- and low-performance districts by considering twelve additional variables within a Discriminant Function Analysis (DFA). 148 high environmental performance districts (18% of total) were identified mainly across the Alps and Apennine while 314 districts (41%) were classified in the lowest performance class and concentrated in flat areas of southern Italy. The districts with high environmental performances were characterised, on average, by medium to low district value added, moderately low economic weight of the primary sector, and tourism specialisation. Districts with high economic performances and low environmental performances were characterised by high sensitivity to LD, low district value added, high share of agriculture in total product, and the lowest productivity of labour in all economic sectors. In these districts the risk of entering a downward spiral of rural poverty and environmental degradation is potentially high.  相似文献   
60.
Inflation and the fiscal limit   总被引:1,自引:0,他引:1  
We use a rational expectations framework to assess the implications of rising debt in an environment with a “fiscal limit”. The fiscal limit is defined as the point where the government no longer has the ability to finance higher debt levels by increasing taxes, so either an adjustment to fiscal spending or monetary policy must occur to stabilize debt. We give households a joint probability distribution over the various policy adjustments that may occur, as well as over the timing of when the fiscal limit is hit. One policy option that stabilizes debt is a passive monetary policy, which generates a burst of inflation that devalues the existing nominal debt stock. The probability of this outcome places upward pressure on inflation expectations and poses a substantial challenge to a central bank pursuing an inflation target. The distribution of outcomes for the path of future inflation has a fat right tail, revealing that only a small set of outcomes imply dire inflationary scenarios. Avoiding these scenarios, however, requires the fiscal authority to renege on some share of future promised transfers.  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