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   628篇
  免费   14篇
财政金融   97篇
工业经济   51篇
计划管理   110篇
经济学   151篇
综合类   3篇
运输经济   1篇
旅游经济   18篇
贸易经济   132篇
农业经济   25篇
经济概况   54篇
  2022年   4篇
  2021年   6篇
  2020年   13篇
  2019年   11篇
  2018年   12篇
  2017年   22篇
  2016年   13篇
  2015年   8篇
  2014年   12篇
  2013年   78篇
  2012年   16篇
  2011年   17篇
  2010年   19篇
  2009年   26篇
  2008年   23篇
  2007年   18篇
  2006年   14篇
  2005年   11篇
  2004年   18篇
  2003年   15篇
  2002年   17篇
  2001年   16篇
  2000年   17篇
  1999年   11篇
  1998年   10篇
  1997年   16篇
  1996年   15篇
  1995年   8篇
  1994年   14篇
  1993年   5篇
  1992年   12篇
  1991年   13篇
  1990年   5篇
  1989年   8篇
  1988年   10篇
  1987年   4篇
  1986年   7篇
  1985年   5篇
  1984年   11篇
  1981年   5篇
  1980年   9篇
  1979年   4篇
  1978年   8篇
  1977年   9篇
  1976年   11篇
  1975年   5篇
  1974年   3篇
  1973年   3篇
  1972年   8篇
  1971年   6篇
排序方式: 共有642条查询结果,搜索用时 15 毫秒
11.
This study examined the effect of definitions for organic and natural on willingness to pay a premium for organic over natural chicken. Data were collected using surveys and experimental auctions that were conducted before and after information was presented. Before information, approximately two‐thirds of participants inaccurately equated the requirements of natural with those for organic. After information, nearly 50% increased their premium, while 30% decreased their premium. Logistic regression results showed that consumers who had overestimated the requirements for natural were most likely to have an increased premium after information, with significantly higher bids for organic. For those who decreased their premium after information, awareness of consuming genetically modified (GM) foods was a key variable. The non‐genetically modified (non‐GM) requirement of organic appears to be of low value to some consumers. Overall, consumer confusion regarding organic and natural standards may be having substantial impacts on the two markets.  相似文献   
12.
The article examines the effect of membership in farmer groups (MFG) on adoption lag of agricultural technologies and farm performance in Burundi, the Democratic Republic of Congo and Rwanda. We use duration and stochastic production frontier models on farm household data. We find that the longer the duration of MFG, the shorter the adoption lag and much more so if combined with extension service delivery. Farmer groups function as an important mechanism for improving farm productivity through reduced technical inefficiency in input use. We discuss policy implications under which farmer groups are a useful channel to reduce adoption lag, and the means through which improved farm performance can be achieved.  相似文献   
13.
Among the second-best approaches for the regulation of pollution,little attention has been paid to the distorting effect of intensivemargin policies on the extensive margin. This article shows,within a dynamic framework, that regulation of the intensivemargin has to be complemented by regulation of the extensivemargin. Depending on the elasticity of the pollution functionwith respect to nitrogen use, the appropriate regulation atthe extensive margin is zero, a tax or a subsidy. We show empiricallythat combining a nitrogen tax with land-use taxes is about 18per cent more cost efficient than a nitrogen tax alone and 58per cent more efficient than off-site abatement in the formof groundwater treatment.  相似文献   
14.
A bstract . Ethics and ethical thinking involve two primary and interdependent elements of analysis: the individual and the society. Economic thought dichotomized these two elements into the individual (competitive capitalism ) or the society (Marxist socialism ), with one element being the cause, and the other the effect. Views of economic reality were developed not on the basis of the interdependence of the individual and the society but their mutual antagonism.
Economic thought is based on the scientific reasoning of the seventeenth and eighteenth centuries. Its abstract definition of reality narrowed the significance of the concrete appearances of things in favor of the rules (science) that define things. Science requires both an objective causal order (independent of human definitions and beliefs) and the development of laws (independent of the human observer or participant) that explain the nature of the objective world. Ethical reasoning requires that economic causality be defined to include both the individual and the society. Ethical reasoning is needed to bring together both the scientific and the metaphysical for human meaning. The science of means must be joined to the human purposes of ends.  相似文献   
15.
In this paper the concept of a municipal welfare function is defined. It reflects the evaluation by local authorities of several levels of local expenditures. On the basis of an extensive survey among all Dutch municipal authorities these functions are estimated for about 550 Dutch municipalities with respect to total expenditures and differentiated with respect to several portfolios, like public works, education, etc. The variation of the estimated municipal welfare parameters is explained by objectively measurable municipal characteristics like the number of the inhabitants, age distribution of inhabitants and houses, number of unemployed, regional situation.  相似文献   
16.
While using financial incentives to increase fertility has become relatively common, the effects of such policies are difficult to assess. We propose an identification strategy that relies on the fact that the variation in wages induces variation in benefits and tax credits among ‘comparable’ households. We implement our approach by estimating a discrete‐choice model of female participation and fertility using individual data from the French Labor Force Survey and a detailed representation of the French tax–benefit system. Our results suggest that financial incentives have had a significant effect on fertility decisions in France. As an example, we simulate the effects of an additional, unconditional child credit of 150 euros per month. The effects are strongest for the third child. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   
17.
This paper considers the combination of pollution taxes and abatement subsidies when some polluting firms procure their abatement goods and services from an oligopolistic eco-industry. The regulator must here cope with two simultaneous price distortions: one that comes from pollution and the other which is caused by the eco-industry’s market power. In this context, we show that taxing emissions while subsidizing polluters’ abatement efforts cannot lead to first-best, but the opposite occurs provided it is the eco-industry’s output which is subsidized. When public transfers also create distortions, welfare can be higher if the regulator uses only an emission tax, but subsidizing abatement suppliers while taxing emissions remains optimal when the eco-industry is concentrated.  相似文献   
18.
Proponents argue that mergers should be encouraged as a legitimate strategy to avert (presumably undesirable) hospital closures. More recently, antitrust activity directed at not-for-profit hospitals has intensified. This study attempts to shed some light on the policy debate by testing whether merger targets are indeed candidates for closure, namely hospitals with persistent losses. Acquisitions of independent not-for-profit hospitals by other hospitals and by multihospital corporations are observed from a national sample for the period 1982–1987. The likelihood of being acquired in during any year within that period is estimated using a discrete-time hazard rate model. We find no evidence to support the notion that hospitals with weak financial indicators are more likely to be acquired. Rather, we find that hospitals with high operating-margins that are located in less regulated markets, and to a certain extent in high-growth markets, are more likely to be acquired. These findings cast doubt on certain predictions found in the theoretical literature, but are in agreement with empirical studies of other industries.  相似文献   
19.
20.
A bstract An international carbon tax has been the subject of considerable recent discussion as an economic incentive instrument to combat the perceived threat of global warming lesuking, primarily, from the use of the carbon emitting fossils–coal, oil, and natural gas–in the production of energy. During 1991, the European Union proposed the adoption of such a tax to be imposed by each member nation. The economic merits as well as the problems associated with the proposed European carbon tax are discussed along with the political prospects for its adoption. It is concluded that even though early adoption of the tax is unlikely, the economic merits of this tax instrument for the alleviation of global warming accompanied by changing political parameters may lead to its adoption in the long run.  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