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   125篇
  免费   8篇
财政金融   22篇
工业经济   9篇
计划管理   27篇
经济学   42篇
运输经济   1篇
旅游经济   1篇
贸易经济   24篇
农业经济   2篇
经济概况   3篇
邮电经济   2篇
  2021年   1篇
  2019年   3篇
  2018年   2篇
  2017年   5篇
  2016年   5篇
  2015年   4篇
  2014年   3篇
  2013年   20篇
  2012年   5篇
  2011年   5篇
  2010年   3篇
  2009年   2篇
  2008年   7篇
  2007年   3篇
  2006年   5篇
  2005年   3篇
  2004年   7篇
  2003年   3篇
  2002年   3篇
  2001年   6篇
  2000年   4篇
  1999年   3篇
  1998年   3篇
  1997年   3篇
  1996年   3篇
  1995年   1篇
  1994年   1篇
  1993年   2篇
  1992年   2篇
  1991年   1篇
  1990年   1篇
  1988年   1篇
  1985年   1篇
  1984年   1篇
  1983年   4篇
  1981年   1篇
  1980年   1篇
  1974年   1篇
  1973年   1篇
  1971年   1篇
  1970年   1篇
  1963年   1篇
排序方式: 共有133条查询结果,搜索用时 15 毫秒
81.
This article presents a valuation model of futures contracts and derivatives on such contracts, when the underlying delivery value is an insurance index, which follows a stochastic process containing jumps of random claim sizes at random time points of accident occurrence. Applications are made on insurance futures and spreads, a relatively new class of instruments for risk management launched by the Chicago Board of Trade in 1993, anticipated to start in Europe and perhaps also in other parts of the world in the future. The article treats the problem of pricing catastrophe risk, which is priced in the model and not treated as unsystematic risk. Several closed pricing formulas are derived, both for futures contracts and for futures derivatives, such as caps, call options, and spreads. The framework is that of partial equilibrium theory under uncertainty.  相似文献   
82.
By using a dynamic factor model, we can substantially improve the reliability of real-time output gap estimates for the U.S. economy. First, we use a factor model to extract a series for the common component in GDP from a large panel of monthly real-time macroeconomic variables. This series is immune to revisions to the extent that revisions are due to unbiased measurement errors or idiosyncratic news. Second, our model is able to handle the unbalanced arrival of the data. This yields favorable nowcasting properties and thus starting conditions for the filtering of data into a trend and deviations from a trend. Combined with the method of augmenting data with forecasts prior to filtering, this greatly reduces the end-of-sample imprecision in the gap estimate. The increased precision has economic importance for real-time policy decisions and improves real-time inflation forecasts.  相似文献   
83.
The objective of this paper is to analyze economic efficiency considerations of standards competition, in order to thereby enrich the discussion about the transfer of the ECMA-376-1 (Office Open XML - OOXML) standard into the ISO/IEC 29500:2008 standard parallel to the already existing ISO/IEC 26300:2006 (Open Document Format for Office Applications - ODF) standard. Based on the available economic literature we identify parameters that need to be considered in the decision for or against a competition between competing standards. The characteristics in the specific case of competition between the ODF and the OOOXML standard clearly justify the decision for two documents standards.  相似文献   
84.
Allocation of emissions allowances may have significant distributional and efficiency effects. It is well known that cost-efficiency may be achieved if allowances are auctioned or distributed in a lump sum manner, e.g., based on emissions levels before the start of the system (‘grandfathering’). Böhringer and Lange (Eur Econ Rev 49:2041–2055, 2005) show that a cost-effective outcome can also be achieved if the base year for allocation is continually updated (‘updating’), given that banking and borrowing are prohibited. In this paper we examine whether updating alters the entry and exit conditions for firms compared to grandfathering, and how it affects profits for new and existing firms. We find that the two schemes function surprisingly similar: First, the incentives to entry and exit are identical. Second, the total value of free quotas to existing firms, based on emissions before the system starts, is also identical without any auctioning. With updating initial claims for free allowances have a shorter lifetime compared to grandfathering, but quota prices are higher as firms anticipate the effect of current emissions on future claims to free allowances. The two effects exactly cancel each other out. If there is some combination of auction and free allocation, the total value of free quotas will always be highest under grandfathering if the auction rate is the same. Entry and exit incentives are still equal.  相似文献   
85.
Does an income tax harm economic efficiency more the more progressive it is? Public economics provides a strong case for a definite ‘yes’. But at least three forces may pull in the other direction. First, low–wage workers may on average have more elastic labour supply schedules than high–wage workers, in which case progressive taxes contribute to a more efficient allocation of the total tax burden. Second, in non–competitive labour markets, progressive taxes may encourage wage moderation, and hence reduce the equilibrium level of unemployment. And third, if wage setters have egalitarian objectives, progressive taxes may reduce the need for redistribution in pre–tax wages, and hence increase the demand for low–skilled workers. This paper surveys the theoretical, as well as the empirical literature about labour supply, taxes and wage setting. We conclude that in a second best world, the trade–off between equality and efficiency is not always inevitable.  相似文献   
86.
87.
A popular explanation for the rise in European unemployment during the past decades is that relative wages failed to adjust to changes in relative productivities. Many economists reject this hypothesis on the ground that the ratios of low- to high-skill unemployment did not increase. Building on a search model, I argue that relative unemployment rates are affected by skill-neutral, as well as skill-biased shocks; hence stable ratios are theoretically consistent with a mix of skill-biased and skill-neutral shocks. Yet, numerical exercises confirm that wage rigidity in the face of skill-biased shocks probably did not explain much of the European unemployment experience.  相似文献   
88.
Blind  Knut  Edler  Jakob 《NETNOMICS》2003,5(1):71-96
In Europe, the future patenting of software-related inventions has been the subject of intensive discussions for some time, since there exists a strong dispute between the supporters of the U.S. practice of allowing patents in order to increase Europe's competitiveness and the opponents postulating negative impacts of patents on the software development process. This paper presents empirical results about the idiosyncrasies of the software development process and tests hypotheses on their impact on the likelihood of patents being obstacles for software dvelopment. The paper concludes with the identification of determinants for preferences concerning different possible patent regimes in the future.  相似文献   
89.
The network of issues around information obtained from genetic testing is wide and complex. While risk assessment, awareness and discussion are often public driven, and in many instances, including that of nuclear power, are allied with democratic principles, the case of gene technology and genetic testing appears to be different. The opportunity for risk assessment by gene testing is rejected by many, and this rejection is supported by the claim of the right not to know. This article discusses the background to this development, and argues that decisions that consider issues related to genetic testing should be taken with the participation of affected parties.  相似文献   
90.
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